Question Bank List

Found 19839 questions
ID Question Subject Chapter Category Options Answer Actions
21572 $\text{How many } Mn = O \text{ (manganese-oxygen double bonds) bonds are present in the compound } Mn_2O_7?$ 2 222 JEE MCQ NEW $4$, $5$... 3 Edit Delete
21571 $\text{Match List-I (Complexes) with List-II (Colour) and choose the correct option:}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \hline (i) \; \text{Fe}_4[\text{Fe(CN)}_6]_3 & (A) \; \text{Red} \\ (ii) \; [\text{Fe(SCN)}]^{2+} & (B) \; \text{Green} \\ (iii) \; \text{FeSO}_4 \cdot 7\text{H}_2\text{O} & (C) \; \text{Prussian blue} \\ \hline \end{array}$ 2 222 JEE MCQ NEW $(i)-(C), (ii)-(A), (iii)-(B)$, $(i)-(B), (ii)-(A), (iii)-(C)$... 1 Edit Delete
21570 $\text{How many of the following elements do not belong to the Lanthanoids?}$ $\text{Eu, Er, Lu, Cm, Yb, Tb}$ 2 222 JEE MCQ NEW $5$, $4$... 4 Edit Delete
21569 $\text{Calculate the Bohr Magneton (B.M.) value for the compound with the least oxidizing ability in the following list:}$ $[\text{VO}_2^+, \text{MnO}_4^-, \text{and Cr}_2\text{O}_7^{2-}]$ 2 222 JEE MCQ NEW $2$, $0$... 2 Edit Delete
21568 $\text{On treating a compound with warm dil. } \text{H}_2\text{SO}_4, \text{ gas X is evolved which turns } \text{K}_2\text{Cr}_2\text{O}_7 \text{ paper acidified with dil. } \text{H}_2\text{SO}_4 \text{ to a green compound Y. Determine X and Y respectively:}$ 2 222 JEE MCQ NEW $X = \text{SO}_2, Y = \text{Cr}_2\text{O}_3$, $X = \text{SO}_3, Y = \text{Cr}_2\text{O}_3$... 3 Edit Delete
21567 $\text{Match List-I with List-II.}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \text{(Types of alloy)} & \text{(Composition)} \\ \hline \text{(A) Bronze} & \text{(I) Cu, Ni} \\ \text{(B) Brass} & \text{(II) Fe, Cr, Ni, C} \\ \text{(C) UK silver coin} & \text{(III) Cu, Zn} \\ \text{(D) Stainless Steel} & \text{(IV) Cu, Sn} \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 222 JEE MCQ NEW $(A)-(IV), (B)-(III), (C)-(I), (D)-(II)$, $(A)-(IV), (B)-(II), (C)-(I), (D)-(III)$... 2 Edit Delete
21566 $\text{Which of the following oxidation reactions are carried out by both } \text{K}_2\text{Cr}_2\text{O}_7 \text{ and } \text{KMnO}_4 \text{ in acidic medium?}$ $\text{A. } \text{I}^- \rightarrow \text{I}_2$ $\text{B. } \text{S}^{2-} \rightarrow \text{S}$ $\text{C. } \text{Fe}^{2+} \rightarrow \text{Fe}^{3+}$ $\text{D. } \text{I}^- \rightarrow \text{IO}_3^-$ $\text{E. } \text{S}_2\text{O}_3^{2-} \rightarrow \text{SO}_4^{2-}$ $\text{Choose the correct answer from the options given below:}$ 2 222 JEE MCQ NEW $\text{B, C and D only}$, $\text{A, D and E only}$... 3 Edit Delete
21565 $\text{Match the transition metal ion in List-I with its corresponding spin-only magnetic moment (in B.M.) in List-II:}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \text{(Transition metal ion)} & \text{(Spin only magnetic moment (B.M.))} \\ \hline \text{(A) } \text{Ti}^{3+} & \text{(I) } 3.87 \\ \text{(B) } \text{V}^{2+} & \text{(II) } 0.00 \\ \text{(C) } \text{Ni}^{2+} & \text{(III) } 1.73 \\ \text{(D) } \text{Sc}^{3+} & \text{(IV) } 2.84 \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 222 JEE MCQ NEW $(\text{A})-(\text{III}), (\text{B})-(\text{I}), (\text{C})-(\text{II}), (\text{D})-(\text{IV})$, $(\text{A})-(\text{III}), (\text{B})-(\text{II}), (\text{C})-(\text{IV}), (\text{D})-(\text{II})$... 2 Edit Delete
21564 $\text{How many } f \text{ electrons are present in the ground-state electronic configuration of Np (Z = 93)?}$ 2 222 JEE MCQ NEW $18$, $14$... 1 Edit Delete
21563 $\text{Which of the following pairs consists of transition metal ions that are colourless?}$ 2 222 JEE MCQ NEW $\text{Sc}^{3+}, \text{Zn}^{2+}$, $\text{Ti}^{4+}, \text{Cu}^{2+}$... 1 Edit Delete
21562 $\text{In a neutral or a faintly alkaline solution, } \text{MnO}_4^- \text{ oxidises thiosulphate to:}$ 2 222 JEE MCQ NEW $\text{S}_2\text{O}_7^{2-}$, $\text{S}_2\text{O}_8^{2-}$... 4 Edit Delete
21561 $\text{The electronic configuration of Platinum (atomic number: 78) is:}$ 2 222 JEE MCQ NEW $[\text{Xe}]4f^{14}5d^96s^1$, $[\text{Kr}]4f^{14}5d^{10}$... 1 Edit Delete
21560 $\text{Which of the following statements are correct?}$ $\text{(A) The electronic configuration of Cr is } [\text{Ar}]3d^5 4s^1.$ $\text{(B) The magnetic quantum number may have a negative value.}$ $\text{(C) In the ground state of an atom, the orbitals are filled in order of their increasing energies.}$ $\text{(D) The total number of nodes is given by } n-2.$ 2 222 JEE MCQ NEW $\text{(A), (C) and (D) only}$, $\text{(A) and (B) only}$... 4 Edit Delete
21559 $\text{Which of the following pairs of ions of lanthanoids corresponds to half-filled and completely filled 'f' orbitals respectively, based on their electronic configurations?}$ $\text{[Given: Atomic no. Eu, 63; Sm, 62; Tm, 69; Tb, 65; Yb, 70; Dy, 66]}$ 2 222 JEE MCQ NEW $\text{Eu}^{2+} \text{ and Tm}^{2+}$, $\text{Sm}^{2+} \text{ and Tm}^{3+}$... 3 Edit Delete
21558 $\text{Which of the following metal in the 3d transition metal series possesses the highest } \text{M}^{2+}/\text{M} \text{ standard electrode potential?}$ 2 222 JEE MCQ NEW $\text{Chromium (Cr)}$, $\text{Iron (Fe)}$... 3 Edit Delete
21557 $\text{The most common oxidation state of Lanthanoid elements is } +3. \text{ Which of the following is likely to deviate easily from } +3 \text{ oxidation state?}$ $1. \text{Ce(At. No. 58)}$ $2. \text{La(At. No. 57)}$ $3. \text{Lu(At. No. 71)}$ $4. \text{Gd(At. No. 64)}$ 2 222 JEE MCQ NEW $\text{Ce(At. No. 58)}$, $\text{La(At. No. 57)}$... 1 Edit Delete
21556 $\text{Match the following ions from List-I with their corresponding electron}$ $\text{configuration from List-II and select the correct option.}$ $\begin{array}{|c|c|} \hline \text{List-I (Ion)} & \text{List-II (electron configuration)} \\ \hline \text{a. } \text{Mn}^{2+} & \text{(i) } 3d^3 4s^1 \\ \text{b. } \text{V}^{+} & \text{(ii) } 3d^5 4s^0 \\ \text{c. } \text{Cr}^{+} & \text{(iii) } 3d^6 4s^0 \\ \text{d. } \text{Fe}^{2+} & \\ \hline \end{array}$ 2 222 JEE MCQ NEW $\text{a} \rightarrow \text{(i)}, \text{b} \rightarrow \text{(ii)}, \text{c} \rightarrow \text{(iii)}, \text{d} \rightarrow \text{(iii)}$, $\text{a} \rightarrow \text{(iv)}, \text{b} \rightarrow \text{(ii)}, \text{c} \rightarrow \text{(i)}, \text{d} \rightarrow \text{(i)}$... 3 Edit Delete
21555 $\text{Which of the following statements are correct?}$ $\text{(A) } \text{Mn}_2\text{O}_7 \text{ is an oil at room temperature.}$ $\text{(B) } \text{V}_2\text{O}_4 \text{ reacts with acid to give } \text{VO}^{2+}. $ $\text{(C) } \text{CrO is a basic oxide.}$ $\text{(D) } \text{V}_2\text{O}_5 \text{ does not react with acids.}$ $\text{Choose the correct option:}$ $1. \text{ A, B, and C only}$ $2. \text{ B, C and D only}$ $3. \text{ A only}$ $4. \text{ B and C only}$ 2 222 JEE MCQ NEW $\text{A, B, and C only}$, $\text{B, C and D only}$... 1 Edit Delete
21554 $\text{An element from the d-block of the } 4^{\text{th}} \text{ period has a spin-only magnetic moment of } 3.9 \text{ BM in its } \text{Z}^{3+} \text{ ionic form. What is the minimum atomic number } (\text{Z}) \text{ of this element?}$ 2 222 JEE MCQ NEW $29$, $23$... 3 Edit Delete
21553 $\text{What is the difference in the spin-only magnetic moment (in B.M.)}$ $\text{between manganese (Mn) in } \text{KMnO}_4 \text{ and manganese species in the}$ $\text{product (X) of the given reaction?}$ $\text{KMnO}_4 \xrightarrow{\text{H}^+} \text{X (product having Mn)}$ 2 222 JEE MCQ NEW $2$, $4$... 4 Edit Delete
21552 $\text{Which of the following f-block metals have a half-filled f-subshell?}$ $\text{(a) Samarium (Sm)}$ $\text{(b) Gadolinium (Gd)}$ $\text{(c) Europium (Eu)}$ $\text{(d) Terbium (Tb)}$ $\text{[Atomic numbers : Sm = 62, Eu = 63, Gd = 64, Tb = 65]}$ 2 222 JEE MCQ NEW $\text{(a) and (b)}$, $\text{(b) and (c)}$... 2 Edit Delete
21551 $\text{When } \text{K}_2\text{Cr}_2\text{O}_7 \text{ is used in an acidic medium during titration, the oxidation number of Cr in the product side is-}$ 2 222 JEE MCQ NEW $+6$, $+2$... 3 Edit Delete
21550 $\text{During the qualitative analysis of } \text{SO}_3^{2-} \text{ using acidified } \text{H}_2\text{SO}_4, \text{ SO}_2 \text{ gas evolved which turns } \text{K}_2\text{Cr}_2\text{O}_7 \text{ solution:}$ 2 222 JEE MCQ NEW $\text{Green}$, $\text{Black}$... 1 Edit Delete
21549 $\text{How many of the following ions/elements has/have the same value of spin magnetic moment?}$ $\text{V}^{3+}, \text{Cr}^{3+}, \text{Fe}^{2+}, \text{Ni}^{2+}$ 2 222 JEE MCQ NEW $2$, $3$... 1 Edit Delete
21548 $ ext{Ce}^{3+}, ext{La}^{3+}, ext{Pm}^{3+} ext{ and } ext{Yb}^{3+} ext{ have ionic radii in the increasing order as:}$ 2 222 JEE MCQ NEW $ ext{La}^{3+} < ext{Ce}^{3+} < ext{Pm}^{3+} < ext{Yb}^{3+}$, $ ext{Yb}^{3+} < ext{Pm}^{3+} < ext{Ce}^{3+} < ext{La}^{3+}$... 2 Edit Delete
21547 $\text{The common oxidation states associated with cerium (Ce) are:}$ 2 222 JEE MCQ NEW $+3, +4$, $+2, +3$... 1 Edit Delete
21546 $\text{The radius of La}^{3+} \text{ (Atomic number of La = 57) is } 1.06 \, \text{Å. Which one of the following given values will be closest to the radius of Lu}^{3+} \text{ (Atomic number of Lu = 71)?}$ $1. \; 1.60 \, \text{Å}$ $2. \; 1.40 \, \text{Å}$ $3. \; 1.06 \, \text{Å}$ $4. \; 0.85 \, \text{Å}$ 2 222 JEE MCQ NEW $1.60 \, \text{Å}$, $1.40 \, \text{Å}$... 4 Edit Delete
21545 $\text{The incorrect statement among the following is:}$ $1.\ \text{VOSO}_3\ \text{is a reducing agent.}$ $2.\ \text{Cr}_2\text{O}_4\ \text{is an amphoteric oxide.}$ $3.\ \text{RuO}_4\ \text{is an oxidizing agent.}$ $4.\ \text{Red color of ruby is due to the presence of } \text{Co}^{3+}.$ 2 222 JEE MCQ NEW $\text{VOSO}_3\ \text{is a reducing agent.}$, $\text{Cr}_2\text{O}_4\ \text{is an amphoteric oxide.}$... 4 Edit Delete
21544 $\text{The correct order of the following elements with respect to their density is:}$ 2 222 JEE MCQ NEW $\text{Cr} < \text{Zn} < \text{Co} < \text{Cu} < \text{Fe}$, $\text{Zn} < \text{Cu} < \text{Co} < \text{Fe} < \text{Cr}$... 3 Edit Delete
21543 $\text{The calculated magnetic moments (spin only value) for species}$ $[\text{FeCl}_4]^{2-}, \ [\text{Co} \ (\text{C}_2\text{O}_4)_3]^{3-} \ \text{and} \ \text{MnO}_4^{2-} \ \text{respectively are:}$ 2 222 JEE MCQ NEW $5.82, \ 0 \ \text{and} \ 0 \ \text{BM}$, $4.90, \ 0 \ \text{and} \ 1.73 \ \text{BM}$... 2 Edit Delete
21542 $\text{Which of the following lanthanide have half-filled and fully filled f-orbital respectively?}$ 2 222 JEE MCQ NEW $\text{Eu}^{2+}, \text{Tb}^{3+}$, $\text{Yb}^{3+}, \text{Tb}^{2+}$... 3 Edit Delete
21541 $\text{Which of the following oxidizing agents is the strongest?}$ 2 222 JEE MCQ NEW $\text{Ti}^{3+}$, $\text{Cr}^{3+}$... 4 Edit Delete
21540 $\text{Which of the following group of transition metals is called coinage metals?}$ 2 222 JEE MCQ NEW $\text{Cu, Ag, Au}$, $\text{Ru, Rh, Pd}$... 1 Edit Delete
21539 $\text{Which of the following explains the primary cause of lanthanoid contraction?}$ 2 222 JEE MCQ NEW $\text{Greater shielding of 5d electrons by 4f electrons.}$, $\text{Poor shielding of 5d electrons by 4f electrons.}$... 4 Edit Delete
21538 $\text{In context with the transition elements, which of the following statements is incorrect?}$ 2 222 JEE MCQ NEW $\text{In addition to the normal oxidation state, the zero oxidation state is also shown by these elements in complexes.}$, $\text{In the highest oxidation states, the transition metal shows basic character and forms cationic complexes.}$... 2 Edit Delete
21537 $\text{What is the outer electronic configuration of Gadolinium (Gd) with atomic number 64?}$ 2 222 JEE MCQ NEW $4f^3\ 5d^5\ 6s^2$, $4f^8\ 5d^0\ 6s^2$... 4 Edit Delete
21536 $\text{The pair that has similar atomic radii is:}$ $\text{1. Mo, and W}$ $\text{2. Mn, and Re}$ $\text{3. Ti, and Hf}$ $\text{4. Sc, and Ni}$ 2 222 JEE MCQ NEW $\text{Mo, and W}$, $\text{Mn, and Re}$... 1 Edit Delete
21535 $\text{The lanthanide ion among the following that would show colour is:}$ $1.\ \text{La}^{3+}$ $2.\ \text{Gd}^{3+}$ $3.\ \text{Sm}^{3+}$ $4.\ \text{Lu}^{3+}$ 2 222 JEE MCQ NEW $\text{La}^{3+}$, $\text{Gd}^{3+}$... 3 Edit Delete
21534 $\text{The lanthanoid that does not show } +4 \text{ oxidation state is:}$ 2 222 JEE MCQ NEW $\text{Dysprosium (Dy)}$, $\text{Europium (Eu)}$... 2 Edit Delete
21533 $\text{The correct electronic configuration and spin only magnetic moment (BM) of Gd}^{3+} (Z = 64), \text{ respectively, are:}$ 2 222 JEE MCQ NEW $[\text{Xe}] 5f^7 \text{ and } 8.9$, $[\text{Xe}] 4f^7 \text{ and } 7.9$... 2 Edit Delete
21532 $\text{The incorrect statement is:}$ 2 222 JEE MCQ NEW $\text{Manganate and permanganate ions are paramagnetic.}$, $\text{Manganate ion is green in color and permanganate ion is purple in color.}$... 1 Edit Delete
21531 $\text{The electrode potential of } \text{M}^{2+} / \text{M} \text{ of 3d-series elements shows positive value of:}$ $1. \text{ Zn}$ $2. \text{ Fe}$ $3. \text{ Co}$ $4. \text{ Cu}$ 2 222 JEE MCQ NEW $\text{Zn}$, $\text{Fe}$... 4 Edit Delete
21530 $\text{The major components in "Gun Metal" are:}$ 2 222 JEE MCQ NEW $\text{Cu, Zn and Ni}$, $\text{Cu, Sn and Zn}$... 2 Edit Delete
21529 $\text{In a mildly alkaline medium, thiosulphate ion is oxidized by } \text{MnO}_4^- \text{ to } 'A'. \text{ The oxidation state of sulphur in } 'A' \text{ is:}$ 2 222 JEE MCQ NEW $+4$, $+2$... 4 Edit Delete
21528 $\text{If dichromate ion is treated with base, the oxidation number of Cr in the product formed will be:}$ 2 222 JEE MCQ NEW $+6$, $+4$... 1 Edit Delete
21527 $\text{Which of the following lanthanoids do not form MO}_2 \text{ [where M is a lanthanoid metal]?}$ 2 222 JEE MCQ NEW $\text{Pr}$, $\text{Dy}$... 4 Edit Delete
21526 $\text{In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?}$ $\text{(i) [FeF}_6\text{]}^{3-}$ $\text{(ii) [Co(NH}_3\text{)}_6\text{]}^{3+}$ $\text{(iii) [NiCl}_4\text{]}^{2-}$ $\text{(iv) [Cu(NH}_3\text{)}_4\text{]}^{2+}$ 2 222 JEE MCQ NEW $(i) > (iii) > (iv) > (ii)$, $(i) > (ii) > (iii) > (iv)$... 1 Edit Delete
21525 $\text{The major components of German Silver are:}$ 2 222 JEE MCQ NEW $\text{Ge, Cu and Ag}$, $\text{Zn, Ni and Ag}$... 3 Edit Delete
21524 $\text{In basic medium } \text{CrO}_4^{2-} \text{ oxidizes } \text{S}_2\text{O}_3^{2-} \text{ to form } \text{S}_2\text{O}_3^{2-} \text{ to form } \text{SO}_4^{2-} \text{ and itself changes into } \text{Cr(OH)}_4^{-}.$ $\text{The volume of } 0.154 \text{ M } \text{CrO}_4^{2-} \text{ required to react with } 40 \text{ mL of } 0.25 \text{ M } \text{S}_2\text{O}_3^{2-} \text{ is:}$ $\text{(Rounded-off to the nearest integer)}$ 2 222 JEE MCQ NEW $178$, $173$... 2 Edit Delete
21523 $\text{Given below are two statements:}$ $\text{Statement I: CeO}_2 \text{ can be used for the oxidation of aldehydes and ketones.}$ $\text{Statement II: Aqueous solution of EuSO}_4 \text{ is a strong reducing agent.}$ $\text{In the light of the above statements, choose the correct answer from the options given below:}$ 2 222 JEE MCQ NEW $\text{Statement I is false but statement II is true}$, $\text{Statement I is true but statement II is false}$... 3 Edit Delete
21522 $\text{For a first-order reaction, A} \rightarrow \text{B; } t_{1/2} \text{ is 30 minutes. The time in minutes required for 75 \% completion of the reaction is:}$ 2 218 JEE MCQ NEW $50 \text{ min.}$, $60 \text{ min}$... 2 Edit Delete
21521 $\text{For a reaction, } \text{N}_2\text{O}_5 (g) \rightarrow 2\text{NO}_2 (g) + \frac{1}{2}\text{O}_2 (g) \text{ in a constant volume container, no products were present initially. The final pressure of the system when 50\% of the reaction gets completed is:}$ 2 218 JEE MCQ NEW $\frac{7}{2} \text{ times of initial pressure}$, $5 \text{ times of initial pressure}$... 4 Edit Delete
21520 $\text{Consider the given elementary reaction:}$ $\text{A (g) + B (g)} \rightarrow \text{C (g) + D (g)}$ $\text{If the volume of the reaction mixture is suddenly reduced to } \frac{1}{3} \text{ of its initial volume, the reaction rate will become 'x' times the original reaction rate. The value of x is:}$ 2 218 JEE MCQ NEW $\frac{1}{9}$, $9$... 2 Edit Delete
21519 $\text{Given below are two graphs:}$ $\text{Graph I:}$ \quad t_{1/2} \quad \text{vs} \quad [R]_0 \quad \text{is valid for first order reaction.}$ $\text{Graph II:}$ \quad \log \frac{[R]}{[R]_0} \quad \text{vs} \quad \text{time with slope} \quad = \frac{-k}{2.303} \quad \text{is valid for first order reaction.}$ $\text{In the light of the above two graphs, choose the correct answer from the options given below:}$ 2 218 JEE MCQ NEW $\text{Both graph I and graph II are not correct.}$, $\text{Graph I is not correct but graph II is correct.}$... 4 Edit Delete
21518 $\text{The activation energy of one of the reactions in a biochemical process is } 532611 \text{ J mol}^{-1}. \text{ When the temperature falls from } 310 \text{ K to } 300 \text{ K, the change in rate constant observed is }$ $k_{300} = x \times 10^{-3} k_{310}. \text{ The value of } x \text{ is:}$ $\text{[Given: } \ln 10 = 2.3, R = 8.3 \text{ JK}^{-1}\text{mol}^{-1} ]$ 2 218 JEE MCQ NEW 1, 5... 1 Edit Delete
21517 $\text{Ratio of the times required to reach 99\% completion } (t_{99}) \text{ and 90\% completion } (t_{90}) \text{ for a first-order reaction is:}$ 2 218 JEE MCQ NEW $2$, $4$... 1 Edit Delete
21516 $\text{Given two first-order reactions, with the ratio of their half-lives:}$ $\frac{t_{1/2}}{t'_{1/2}} = \frac{2}{5}.\text{Calculate the ratio of their fractional half-lives:}$ $\frac{t_{1/2/3}}{t'_{4/5}} = ?$ 2 218 JEE MCQ NEW 0.273, 0.468... 1 Edit Delete
21515 $\text{A reaction follows 1}^{\text{st}} \text{ order kinetics with rate constant } (k) = 20 \text{ min}^{-1}. \text{ Calculate the time required to reach the concentration to } 1/32 \text{ times of initial concentration.}$ 2 218 JEE MCQ NEW $0.17325 \text{ min}$, $1.7325 \text{ min}$... 1 Edit Delete
21514 $\text{For a first-order reaction, a half-life } (t_{1/2}) \text{ is 50 min. The time } t_{3/4} \text{ (in minutes) of the reaction is:}$ $1.\ 75$ $2.\ 100$ $3.\ 125$ $4.\ 50$ 2 218 JEE MCQ NEW $75$, $100$... 2 Edit Delete
21513 $\text{Consider the following first-order reactions:}$ $A \rightarrow C; \ t_{1/2} = 15 \ \text{min}, \ B \rightarrow D; \ t_{1/2} = 5 \ \text{min}$ $\text{The initial concentrations of A and B are 1 molar and 8 molar respectively.}$ $\text{The time when the concentration of A and B becomes equal is 'X' minutes.}$ $\text{The value of 2X is:}$ 2 218 JEE MCQ NEW $40 \ \text{min}$, $50 \ \text{min}$... 3 Edit Delete
21512 $\text{For first-order kinetic rate constant } 2.011 \times 10^{-3} \text{ sec}^{-1}. \text{ The time taken for the decomposition of the substance from } 7 \text{ g to } 2 \text{ g will be:}$ $\text{(Use log } 7 = 0.845 \text{ and log } 2 = 0.301)$ 2 218 JEE MCQ NEW $647 \text{ sec}$, $598 \text{ sec}$... 3 Edit Delete
21511 $\text{H}_2 \text{ gas is absorbed on the metal surface like gold, tungsten, etc. This follows }$ $\text{_______ order reaction:}$ 2 218 JEE MCQ NEW $\text{Third}$, $\text{Second}$... 3 Edit Delete
21510 $\text{The differential rate law for the following reaction expressed as:}$ $\text{H}_2 + \text{I}_2 \rightarrow 2\text{HI}$ 2 218 JEE MCQ NEW $-\frac{d[\text{H}_2]}{dt} = -\frac{d[\text{I}_2]}{dt} = 2\frac{d[\text{HI}]}{dt}$, $-2\frac{d[\text{H}_2]}{dt} = -2\frac{d[\text{I}_2]}{dt} = \frac{d[\text{HI}]}{dt}$... 2 Edit Delete
21509 $\text{Half-life of substance A following first order kinetics is 5 days.}$ $\text{Starting with 100g of A, the amount left after 15 days will be:}$ 2 218 JEE MCQ NEW $25 \text{ g}$, $50 \text{ g}$... 3 Edit Delete
21508 $\text{Sucrose hydrolysis in an acidic solution into glucose and fructose follows the first-order rate law with a half-life of 3.33 h at 25}^\circ\text{C. After 9 h, the fraction of sucrose remaining is } f. \text{ The value of } \log\left(\frac{1}{f}\right) \text{ is } A \times 10^{-2}. \text{ The value of } A \text{ is: (Rounded off to the nearest integer) [Assume : ln 10 = 2.303, ln 2 = 0.693]}$ 2 218 JEE MCQ NEW $78$, $81$... 2 Edit Delete
21507 $\text{Gaseous cyclobutene isomerizes to butadiene in a first-order process which has a 'k' value of}$ $3.3 \times 10^{-4} \text{s}^{-1} \text{ at } 153 \degree \text{C. The time in minutes it takes for the isomerization to proceed } 40 \% \text{ to}$ $\text{completion at this temperature is } \_\_\_. \text{ (Rounded off to the nearest integer)}$ 2 218 JEE MCQ NEW $26 \text{ min}$, $30 \text{ min}$... 1 Edit Delete
21506 $\text{Which of the following statements is correct regarding the equation } k = A e^{-E_a/RT} ?$ 2 218 JEE MCQ NEW $k \text{ is the equilibrium constant}$, $A \text{ is adsorption factor}$... 3 Edit Delete
21505 $\text{The half-life of a radioisotope is four hours. If the initial mass of the isotope was 200 g, then the mass remaining undecayed after 24 hours is:}$ $1.\ 1.042\ \text{g}$ $2.\ 2.084\ \text{g}$ $3.\ 3.125\ \text{g}$ $4.\ 4.167\ \text{g}$ 2 218 JEE MCQ NEW $1.042\ \text{g}$, $2.084\ \text{g}$... 3 Edit Delete
21504 $\text{The rate equation for the reaction } 2\text{A} + \text{B} \rightarrow \text{C} \text{ is found to be:}$ $\text{rate} = k [\text{A}] [\text{B}]$ $\text{The correct statement in relation to this reaction is that the:}$ 2 218 JEE MCQ NEW $\text{Unit of } k \text{ must be } \text{s}^{-1}$, $t_{1/2} \text{ is a constant.}$... 4 Edit Delete
21503 $\text{A reaction was found to be second order with respect to the concentration of carbon monoxide.}$ $\text{If the concentration of carbon monoxide is doubled, with everything else kept the same, the rate of reaction will:}$ 2 218 JEE MCQ NEW $\text{Remain unchanged}$, $\text{Triple}$... 3 Edit Delete
21502 $\text{Consider the reaction, } 2A + B \rightarrow \text{ Products.}$ $\text{When concentration of B alone was doubled, the half-life did not change.}$ $\text{When the concentration of A alone was doubled, the rate increased by two times.}$ $\text{The unit of rate constant for this reaction is:}$ 2 218 JEE MCQ NEW $\text{L mol}^{-1} \text{s}^{-1}$, $\text{no unit}$... 4 Edit Delete
21501 $\text{The half-life period of a first-order chemical reaction is 6.93 minutes.}$ $\text{The time required for the completion}$ $\text{of 99\% of the chemical reaction will be (log 2 = 0.301) -}$ 2 218 JEE MCQ NEW $230.3 \text{ minutes}$, $23.03 \text{ minutes}$... 3 Edit Delete
21500 $\text{The time for the half-life period of a certain reaction } A \rightarrow \text{ Products is 1 hour.}$ $\text{When the initial concentration of the reactant 'A' is } 2.0 \text{ mol L}^{-1},$ $\text{the time taken for its concentration to come from } 0.50 \text{ to } 0.25 \text{ mol L}^{-1},$ $\text{if it is a zero-order reaction, is:}$ 2 218 JEE MCQ NEW $1 \text{ h}$, $4 \text{ h}$... 4 Edit Delete
21499 $\text{A reactant (A) forms two products:}$ $\text{A} \xrightarrow{k_1} \text{B, Activation Energy } \text{Ea}_1$ $\text{A} \xrightarrow{k_2} \text{C, Activation Energy } \text{Ea}_2$ $\text{If Ea}_2 = 2 \text{Ea}_1, \text{ then } k_1 \text{ and } k_2 \text{ are related as:}$ 2 218 JEE MCQ NEW $k_2 = k_1 e^{\text{Ea}_1 / RT}$, $k_2 = k_1 e^{\text{Ea}_2 / RT}$... 3 Edit Delete
21498 $\text{For the non-stoichiometry reaction } 2\text{A} + \text{B} \rightarrow \text{C} + \text{D}, \text{ the following kinetic data were obtained in three separate experiments (all at 298 K).}$ $\begin{array}{ccc} \text{Initial Concentration (A)} & \text{Initial Concentration (B)} & \text{Initial rate of formation of C (mol L}^{-1} \text{ s}^{-1}) \\ 0.1 \text{ M} & 0.1 \text{ M} & 1.2 \times 10^{-3} \\ 0.1 \text{ M} & 0.2 \text{ M} & 1.2 \times 10^{-3} \\ 0.2 \text{ M} & 0.1 \text{ M} & 2.4 \times 10^{-3} \end{array}$ $\text{The rate law for the formation of C is:}$ 2 218 JEE MCQ NEW $\frac{dc}{dt} = k[\text{A}]^2[\text{B}]$, $\frac{dc}{dt} = k[\text{A}][\text{B}]^2$... 3 Edit Delete
21497 $\text{Decomposition of } \text{H}_2\text{O}_2 \text{ follows a first order reaction. In fifty minutes the concentration of } \text{H}_2\text{O}_2 \text{ decreases from } 0.5 \text{ to } 0.125 \text{ M in one such decomposition. When the concentration of } \text{H}_2\text{O}_2 \text{ reaches } 0.05 \text{ M, the rate of formation of } \text{O}_2 \text{ will be:}$ $\text{ln } 4 = 1.39$ 2 218 JEE MCQ NEW $7 \times 10^{-2} \text{ M min}^{-1}$, $7 \times 10^{-4} \text{ M min}^{-1}$... 2 Edit Delete
21496 12 2 218 JEE MCQ NEW 1, 2... 1 Edit Delete
21495 $\text{NO}_2 \text{ required for a reaction is produced by the decomposition of } \text{N}_2\text{O}_5 \text{ in CCl}_4 \text{ as per the equation,}$ $2\text{N}_2\text{O}_5(g) \rightarrow 4\text{NO}_2(g) + \text{O}_2(g)$ $\text{The initial concentration of } \text{N}_2\text{O}_5 \text{ is } 3.00 \text{ mol L}^{-1} \text{ and it is } 2.75 \text{ mol L}^{-1}$ $\text{after 30 minutes. The rate of formation of } \text{NO}_2 \text{ is:}$ 2 218 JEE MCQ NEW $2.083 \times 10^{-3} \text{ mol L}^{-1} \text{ min}^{-1}$, $8.333 \times 10^{-3} \text{ mol L}^{-1} \text{ min}^{-1}$... 4 Edit Delete
21494 $\text{For the reaction } 2A + B \rightarrow C, \text{ the values of initial rate at different reactant concentrations are given in the table below. The rate law for the reaction is:}$ $\begin{array}{ccc} [A] \text{ (mol L}^{-1}\text{)} & [B] \text{ (mol L}^{-1}\text{)} & \text{Initial Rate (mol L}^{-1}\text{s}^{-1}\text{)} \\ 0.05 & 0.05 & 0.045 \\ 0.10 & 0.05 & 0.090 \\ 0.20 & 0.10 & 0.72 \end{array}$ 2 218 JEE MCQ NEW $\text{Rate} = k[A][B]$, $\text{Rate} = k[A][B]^2$... 2 Edit Delete
21493 $\text{The rate of a reaction is decreased by } 3.555 \text{ times when the temperature was changed from } 40^\circ\text{C to } 30^\circ\text{C.}$ $\text{The activation energy (in kJ mol}^{-1}\text{) of the reaction is:}$ $\text{(Take R=8.314 J mol}^{-1} \text{ K}^{-1} \text{ ln } 3.555=1.268)}$ 2 218 JEE MCQ NEW $100 \text{ kJ/mol}$, $120 \text{ kJ/mol}$... 1 Edit Delete
21492 $\text{The rate constant (k) of a reaction is measured at different temperatures (T), and the data are plotted in the given figure. The activation energy of the reaction in kJ mol}^{-1} \text{ is:}$ $\text{(R is gas constant)}$ 2 218 JEE MCQ NEW $2R$, $R$... 1 Edit Delete
21491 $\text{If 75 \% of a first-order reaction was completed in 90 minutes, 60 \% of the same reaction would be completed in approximately (in minutes):}$ $\text{(Take : log 2 = 0.30 ; log 2.5 = 0.40)}$ 2 218 JEE MCQ NEW $50 \text{ min}$, $60 \text{ min}$... 2 Edit Delete
21490 $\text{For the reaction } 2A + 3B + \frac{3}{2}C \rightarrow 3P, \text{ the correct statement is:}$ 2 218 JEE MCQ NEW $\frac{dn_A}{dt} = \frac{2}{3} \frac{dn_B}{dt} = \frac{3}{4} \frac{dn_C}{dt}$, $\frac{dn_A}{dt} = \frac{3}{2} \frac{dn_B}{dt} = \frac{3}{4} \frac{dn_C}{dt}$... 4 Edit Delete
21489 $\text{The results given in the below table were obtained during kinetic studies of the following reaction:}$ $2\text{A} + \text{B} \rightarrow \text{C} + \text{D}$ $\begin{array}{|c|c|c|c|} \hline \text{Experiment} & [\text{A}]/\text{mol L}^{-1} & [\text{B}]/\text{mol L}^{-1} & \text{Initial rate/mol L}^{-1} \text{ min}^{-1} \\ \hline \text{I} & 0.1 & 0.1 & 6.00 \times 10^{-3} \\ \text{II} & 0.1 & 0.2 & 2.40 \times 10^{-2} \\ \text{III} & 0.2 & 0.1 & 1.20 \times 10^{-2} \\ \text{IV} & X & 0.2 & 7.20 \times 10^{-2} \\ \text{V} & 0.3 & Y & 2.88 \times 10^{-1} \\ \hline \end{array}$ $\text{X and Y in the given table are respectively:}$ 2 218 JEE MCQ NEW $0.3, 0.4$, $0.4, 0.3$... 1 Edit Delete
21488 $\text{The rate constant of a reaction increases by five times on increase in temperature from } 27^\circ\text{C to } 52^\circ\text{C. The value of activation energy in kJ mol}^{-1} \text{ is-}$ $\text{(Rounded-off to the nearest integer) [R = 8.314 J K}^{-1} \text{ mol}^{-1}]$ 2 218 JEE MCQ NEW 50, 56... 3 Edit Delete
21487 $\text{For the reaction, aA + bB} \rightarrow \text{cC + dD the plot of } \log k \text{ vs } \frac{1}{T} \text{ is given below:}$ $\text{Find the temperature(K) at which the rate constant of the reaction is } 10^{-4}\text{s}^{-1}?$ $\text{(Rounded-off to the nearest integer)}$ $\text{[Given: The rate constant of the reaction is } 10^{-5} \text{ s}^{-1} \text{ at 500 K.]}$ 2 218 JEE MCQ NEW $546 \text{ K}$, $536 \text{ K}$... 4 Edit Delete
21486 $\text{For a first-order reaction}$ $t_{67\%} = \left( \frac{x}{10} \right) t_{50\%} \ \&\ k = 3.84 \times 10^9 \ \text{sec}^{-1}, \ \text{the value of } x \ \text{will}$ $\text{(based on information given):}$ $\text{(Report your answer to the nearest integer)}$ 2 218 JEE MCQ NEW $14$, $16$... 2 Edit Delete
21485 $\text{For a 1}^{\text{st}} \text{ order reaction following graph is obtained between } \ln k \text{ and } \frac{1000}{T}. \text{ Then activation energy of reaction in kcal is:}$ $\begin{array}{c} \text{Slope} = -18.5 \\ \ln k \\ \frac{1000}{T(\text{K})} \end{array}$ 2 218 JEE MCQ NEW $37 \text{ kcal}$, $40 \text{ kcal}$... 1 Edit Delete
21484 46 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21483 45 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21482 44 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21481 43 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21480 42 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21479 41 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21478 40 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
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21476 38 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21475 37 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21474 36 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21473 35 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21472 34 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21471 33 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21470 32 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21469 31 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21468 30 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21467 29 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21466 28 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21465 27 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21464 26 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21463 25 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21462 24 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21461 23 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21460 22 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21459 21 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21458 20 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21457 19 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21456 18 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
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21454 16 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21453 15 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21452 14 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21451 13 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21450 12 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21449 11 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21448 10 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21447 9 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21446 8 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21445 7 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21444 6 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21443 5 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21442 4 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21441 3 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21440 2 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21439 1 2 216 JEE MCQ NEW 1, 2... 1 Edit Delete
21438 $\text{If the freezing point of } 0.5 \text{ w/w } \% \text{ KCl (aq) solution is } -0.24^\circ\text{C.}$ $\text{The percentage of dissociation of KCl in the solution is:}$ $[K_f=1.86 \text{ K-kg/mol}]$ 2 216 JEE MCQ NEW $99 \%$, $67 \%$... 4 Edit Delete
21437 $\text{For the compound } \text{MX}_2, \text{ the observed mass is } 65.6, \text{ while the normal mass is } 164. \text{ The percentage degree of ionization of } \text{MX}_2 \text{ (rounded to the nearest integer) is:}$ $1. \ 75$ $2. \ 60$ $3. \ 50$ $4. \ 85$ 2 216 JEE MCQ NEW $75$, $60$... 1 Edit Delete
21436 $\text{The boiling point of a } 2\% \text{ aqueous solution of a non-volatile solute A is equal to the boiling point of } 8\% \text{ aqueous solution of a non-volatile solute B. What is the correlation between the molecular weights of A and B?}$ 2 216 JEE MCQ NEW $M_A = 4M_B$, $M_B = 4M_A$... 2 Edit Delete
21435 $\text{The elevation in boiling point for 1 molal solution of a non-volatile solute A is 3 K. The depression in the freezing point for 2 molal solutions of A in the same solvent is 6 K. The ratio of } K_b \text{ and } K_f \text{ i.e., } K_b/K_f \text{ is } 1 : X. \text{ The value of } X \text{ is:}$ 2 216 JEE MCQ NEW $7$, $3$... 3 Edit Delete
21434 $3 \text{ g of acetic acid is dissolved in } 500 \text{ g of water. The depression in the freezing point of the solution is given as } x \times 10^{-1} \text{ K. Calculate the value of } x \text{ to the nearest integer.}$ $\text{[ Given : } K_a \text{ of } \text{CH}_3\text{COOH} = 1.8 \times 10^{-5} \text{ and } K_f \text{ of water } = 1.86 \text{ K/molal}$ $\text{Density of water } = 1 \text{ g/mL ]}$ 2 216 JEE MCQ NEW $4$, $6$... 3 Edit Delete
21433 $\text{Consider the given dissociation reaction}$ $\text{HX}_{(\text{aq})} \rightleftharpoons \text{H}^+_{(\text{aq})} + \text{X}^-_{(\text{aq})}$ $\text{with an acid dissociation constant } (K_a) \text{ of } 1.2 \times 10^{-5}. \text{ What is the}$ $\text{osmotic pressure (in atm) of a } 0.03 \text{ M HX solution at } 300 \text{ K?}$ 2 216 JEE MCQ NEW $4 \text{ atm}$, $2 \text{ atm}$... 3 Edit Delete
21432 $\text{If the density of an } x \text{ M solution of NaOH is } 1.12 \text{ g/mL and its}$ $\text{molality is } 3 \text{ m, determine the value of } x.$ 2 216 JEE MCQ NEW $3.0$, $2.3$... 1 Edit Delete
21431 $\text{A sodium chloride (NaCl) solution has a molarity of 3 M. Given that the density of the solution is 1.25 g/mL, its molality will be:}$ 2 216 JEE MCQ NEW $2.90$, $2.79$... 2 Edit Delete
21430 $\text{Which of the following has more relative lowering in vapour pressure}$ $\text{at the same temperature}$ $1.\ 0.1\ \text{M urea}$ $2.\ 0.1\ \text{M NaCl}$ $3.\ 0.1\ \text{M sucrose}$ $4.\ 0.1\ \text{M CaCl}_2$ 2 216 JEE MCQ NEW $0.1\ \text{M urea}$, $0.1\ \text{M NaCl}$... 4 Edit Delete
21429 $\text{The density of a 3 M NaCl solution is 1 g/mL. The molality of the solution is 'x'. The value of } 2x \text{ is:}$ $\text{(Round off to nearest integer)}$ 2 216 JEE MCQ NEW 7, 10... 1 Edit Delete
21428 $\text{If 25 mL of KCl solution requires 20 mL of 1 M AgNO}_3 \text{ solution for complete precipitation of KCl solution. The value of } \Delta T_f \text{ of a KCl solution (} i = 2 \text{) is:}$ $\left( K_f = 1.86 \text{ K} \cdot \text{kg mol}^{-1}. \text{ Assume molarity = molality} \right)$ $\text{(Round off to nearest integer)}$ 2 216 JEE MCQ NEW $5 \text{ K}$, $3 \text{ K}$... 2 Edit Delete
21427 $\text{A solution containing 2 g of a non-electrolyte solute dissolved in 20 g of water has a boiling point of 373.52 K. Calculate the molecular mass of the solute.}$ $\text{(Given that the ebullioscopic constant (} K_b \text{) is 0.52 K} \cdot \text{kg/mol)}$ 2 216 JEE MCQ NEW $140 \text{ g/mol}$, $80 \text{ g/mol}$... 4 Edit Delete
21426 $\text{The molarity of } \text{CO}_2 \text{ in a soft drink is } 0.01 \text{ M. The volume of soft drink is } 300 \text{ mL. The mass of } \text{CO}_2 \text{ in soft drink is:}$ 2 216 JEE MCQ NEW $0.132 \text{ g}$, $0.481 \text{ g}$... 1 Edit Delete
21425 $\text{Which of the following option contains the correct graph between } \frac{\pi}{c} \text{ and } c \text{ at a constant temperature?}$ $\text{(Where } \pi \text{ is osmotic pressure and } c \text{ is a concentration of the solute)}$ 2 216 JEE MCQ NEW $\frac{\pi}{c}$ $\text{ vs } c$ $\text{(horizontal line)}$, $\frac{\pi}{c}$ $\text{ vs } c$ $\text{(upward curve)}$... 1 Edit Delete
21424 $\text{Statement I:}$ $\text{The freezing point of a solution decreases with a decrease in the amount of non-volatile solute.}$ $\text{Statement II:}$ $\text{The freezing point of the solution is less than that of the solvent.}$ 2 216 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Statement I is correct and Statement II is incorrect.}$... 3 Edit Delete
21423 $\text{In a mixture of A and B, components show negative deviations when:}$ 2 216 JEE MCQ NEW $\text{A-B interaction is stronger than A-A and B-B interaction}$, $\text{A-B interaction is weaker than A-A and B-B interaction}$... 1 Edit Delete
21422 $\text{C}_6\text{H}_6$ \text{ freezes at } 5.5^\circ\text{C. The temperature at which a solution of } 10 \text{ g of } \text{C}_4\text{H}_{10} \text{ in } 200 \text{ g of } \text{C}_6\text{H}_6 \text{ will freeze is:} \text{ (The molal freezing point depression constant of } \text{C}_6\text{H}_6 \text{ is } 5.12^\circ\text{C/m.)}$ 2 216 JEE MCQ NEW $2^\circ\text{C}$, $1^\circ\text{C}$... 2 Edit Delete
21421 $\text{Consider the two statements:}$ $\text{Statement I: At 20 } ^\circ \text{C, the molality of KCl solution is 'X' m, and on decreasing temperature to -10 } ^\circ \text{C molality remains unchanged.}$ $\text{Statement II: On changing temperature mass remains unchanged.}$ 2 216 JEE MCQ NEW $\text{Both Statement I and Statement II are True.}$, $\text{Both Statement I and Statement II are False.}$... 1 Edit Delete
21420 $2$ \text{ grams of non-volatile solute dissolves in } 200 \text{ grams each of two different solvents A and B to attain the same molality. If the ratio of } K_b \text{ of solvent A and B is } 1:8 \text{ and the ratio of elevation in boiling points is } x:y, \text{ then the value of } y \text{ is:}$ $1. \ 4$ $2. \ 6$ $3. \ 10$ $4. \ 8$ 2 216 JEE MCQ NEW $4$, $6$... 4 Edit Delete
21419 $\text{The osmotic pressure exerted by a solution prepared by}$ $\text{dissolving 10 g of protein of molar mass 60 g mol}^{-1}$ $\text{in 200 mL of water at 27°C will be:}$ $\text{(Use } R = 0.083 \text{L bar mol}^{-1} \text{K}^{-1})$ 2 216 JEE MCQ NEW $22.5 \text{ atm}$, $20.5 \text{ atm}$... 2 Edit Delete
21418 $\text{Choose a false statement among the following:}$ $1. \text{Raoult's law states that the vapour pressure of a component over a solution is proportional to its mole fraction.}$ $2. \text{The osmotic pressure (}\pi\text{) of a solution is given by the equation } \pi = \text{MRT, where M is the molarity of the solution.}$ $3. \text{The correct order of osmotic pressure for 0.10 M aqueous solution of each compound is } \text{BaCl}_2 > \text{KCl} > \text{CH}_3\text{COOH} > \text{Sucrose.}$ $4. \text{Two sucrose solutions of the same molarity prepared in different solvents will have the same depression in the freezing point.}$ 2 216 JEE MCQ NEW $\text{Raoult's law states that the vapour pressure of a component over a solution is proportional to its mole fraction.}$, $\text{The osmotic pressure (}\pi\text{) of a solution is given by the equation } \pi = \text{MRT, where M is the molarity of the solution.}$... 4 Edit Delete
21417 $\text{A binary liquid solution is prepared by mixing n-heptane and ethanol.}$ $\text{Which one of the following statements is correct regarding the}$ $\text{behavior of the solution?}$ 2 216 JEE MCQ NEW $\text{The solution formed is an ideal solution}$, $\text{The solution is non-ideal, showing +ve deviation from Raoult's Law}$... 2 Edit Delete
21416 $\text{On mixing, heptane, and octane form an ideal solution at 373 K, the vapor pressures of the two liquid components (Heptane and octane) are 105 kPa and 45 kPa respectively.}$ $\text{Vapour pressure of the solution obtained by mixing 25.0 g of heptane and 35 g of octane will be:}$ $\text{(molar mass of heptane = 100 g mol}^{-1}\text{ and of octane =114 g mol}^{-1}\text{)}$ 2 216 JEE MCQ NEW $144.5 \text{ kPa}$, $72.0 \text{ kPa}$... 2 Edit Delete
21415 $5\% \ (w/v) \ \text{solution of cane sugar (molar mass 342) is isotonic with} \ 1\% \ (w/v) \ \text{of a solution of an unknown solute. The molar mass of an unknown solute in g/mol is:}$ 2 216 JEE MCQ NEW $171.2$, $68.4$... 2 Edit Delete
21414 $\text{The degree of dissociation (}\alpha\text{) of a weak electrolyte, } \text{A}_x\text{B}_y \text{ is related to van't Hoff factor (}i\text{) by the expression:}$ 2 216 JEE MCQ NEW $\alpha = \frac{i-1}{(x+y-1)}$, $\alpha = \frac{i-1}{x+y+1}$... 1 Edit Delete
21413 $\text{What is the mole fraction of methyl alcohol in a 5.2 molal aqueous solution of methyl alcohol?}$ 2 216 JEE MCQ NEW $0.100$, $0.190$... 3 Edit Delete
21412 $\text{Consider separate solutions of } 0.500 \text{ M } \text{C}_2\text{H}_5\text{OH(aq)}, 0.100 \text{ M } \text{Mg}_3(\text{PO}_4)_2\text{(aq)}, 0.250 \text{ M } \text{KBr(aq)} \text{ and } 0.125 \text{ M } \text{Na}_3\text{PO}_4\text{(aq)} \text{ at } 25^\circ\text{C.}$ $\text{The correct statement about these solutions, assuming all salts to be strong electrolytes is:}$ 2 216 JEE MCQ NEW $0.100 \text{ M } \text{Mg}_3(\text{PO}_4)_2\text{(aq)} \text{ has the highest osmotic pressure}$, $0.125 \text{ M } \text{Na}_3\text{PO}_4\text{(aq)} \text{ has the highest osmotic pressure}$... 4 Edit Delete
21411 $18 \text{ g glucose } (\text{C}_6\text{H}_{12}\text{O}_6) \text{ is added to } 178.2 \text{ g water. The vapour pressure of aqueous solution in torr is:}$ $1. \ 7.6$ $2. \ 752.4$ $3. \ 76.0$ $4. \ 780.0$ 2 216 JEE MCQ NEW $7.6$, $752.4$... 2 Edit Delete
21410 $\text{For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point?}$ $1. \ [\text{Co} (\text{H}_2\text{O})_6]\text{Cl}_3$ $2. \ [\text{Co} (\text{H}_2\text{O})_5\text{Cl}]\text{Cl}_2 \cdot \text{H}_2\text{O}$ $3. \ [\text{Co} (\text{H}_2\text{O})_4\text{Cl}_2]\text{Cl} \cdot 2\text{H}_2\text{O}$ $4. \ [\text{Co} (\text{H}_2\text{O})_3\text{Cl}_3] \cdot 3\text{H}_2\text{O}$ 2 216 JEE MCQ NEW $[\text{Co} (\text{H}_2\text{O})_6]\text{Cl}_3$, $[\text{Co} (\text{H}_2\text{O})_5\text{Cl}]\text{Cl}_2 \cdot \text{H}_2\text{O}$... 4 Edit Delete
21409 $\text{A solution is prepared by dissolving } 0.6 \text{ g of urea (molar mass = } 60 \text{ g mol}^{-1}) \text{ and } 1.8 \text{ g of glucose (molar mass = } 180 \text{ g mol}^{-1}) \text{ in } 100 \text{ mL of water at } 27 ^\circ \text{C. The osmotic pressure of the solution is:}$ $\text{(R = } 0.08206 \text{ L atm K}^{-1}\text{mol}^{-1})$ 2 216 JEE MCQ NEW $8.2 \text{ atm}$, $2.46 \text{ atm}$... 3 Edit Delete
21408 $\text{At room temperature, a dilute solution of urea is prepared by dissolving 0.60 g of urea in 360 g of water. If the vapour pressure of pure water at this temperature is 35 mm Hg, lowering of vapour pressure will be:}$ $\text{(molar mass of urea = 60 g mol}^{-1}\text{)}$ 2 216 JEE MCQ NEW $0.031 \text{ mmHg}$, $0.017 \text{ mmHg}$... 2 Edit Delete
21407 $1 \text{ g of a non-volatile non-electrolyte solute is dissolved in } 100 \text{ g of two different solvents A and B whose ebullioscopic constants are in the ratio of } 1 : 5. \text{ The ratio of the elevation in their boiling points, } \frac{\Delta T_b(A)}{\Delta T_b(B)}, \text{ is:}$ 2 216 JEE MCQ NEW $5:1$, $1:2$... 4 Edit Delete
21406 $\text{The osmotic pressure of a dilute solution of an ionic compound XY in water is four times that of a solution of } 0.01 \text{ M BaCl}_2 \text{ in water.}$ $\text{Assuming complete dissociation of the given ionic compound in water, the concentration of XY (in mol L}^{-1}\text{) in solution is:}$ 2 216 JEE MCQ NEW $4 \times 10^{-4}$, $4 \times 10^{-2}$... 4 Edit Delete
21405 $\text{Molal depression constant for a solvent is } 4.0 \text{ K kg mol}^{-1} . \text{ The depression in the freezing point of the solvent for } 0.03 \text{ mol kg}^{-1} \text{ solution of } \text{K}_2\text{SO}_4 \text{ is: (Assume complete dissociation of the electrolyte)}$ 2 216 JEE MCQ NEW $0.36 \text{ K}$, $0.18 \text{ K}$... 1 Edit Delete
21404 $\text{The vapour pressures of pure liquids A and B are 400 and 600 mm Hg, respectively, at 298 K.}$ $\text{On mixing the two liquids, the sum of their initial volumes is equal to the volume of the final mixture.}$ $\text{The mole fraction of liquid B is 0.5 in the mixture.}$ $\text{The vapour pressure of the final solution, the mole fractions of components A and B in the vapour phase, respectively, are:}$ 2 216 JEE MCQ NEW $500 \text{ mm Hg}, 0.5, 0.5$, $450 \text{ mm Hg}, 0.5, 0.5$... 3 Edit Delete
21403 $\text{A set of solutions is prepared using 180 g of water as a solvent and 10 g of different non-volatile solutes A, B and C. The relative lowering of vapour pressure in the presence of these solutes are in the order:}$ $\text{[Given, molar mass of A = 100 g mol}^{-1}\text{; B = 200 g mol}^{-1}\text{; C = 10,000 g mol}^{-1}]}$ 2 216 JEE MCQ NEW $\text{A > B > C}$, $\text{A > C > B}$... 1 Edit Delete
21402 $\text{At 300 K, the vapour pressure of a solution containing 1 mole of n-hexane and 3 moles of n-heptane is 550 mm of Hg. At the same temperature, if one more mole of n-heptane is added to this solution, the vapour pressure of the solution increases by 10 mm of Hg. The vapour pressure in mm Hg of n-heptane in its pure state is:}$ $1. \ 500$ $2. \ 600$ $3. \ 700$ $4. \ 800$ 2 216 JEE MCQ NEW $500$, $600$... 2 Edit Delete
21401 $\text{If } 250 \text{ cm}^3 \text{ of an aqueous solution containing } 0.73 \text{ g of a protein A is isotonic with one litre of another aqueous solution containing } 1.66 \text{ g of a protein B at } 298 \text{ K, the ratio of the molecular masses of A and B is:}$ 2 216 JEE MCQ NEW $1.54$, $1.77$... 2 Edit Delete
21400 $4.5 \text{ g of compound A (MW = 90) was used to make 250 mL of its aqueous solution.}$ $\text{The molarity of the solution in M is } x \times 10^{-1}. \text{ The value of } x \text{ is } \underline{\phantom{x}}. \text{ (Rounded off to the nearest integer)}$ 2 216 JEE MCQ NEW $5$, $4$... 3 Edit Delete
21399 $\text{When 9.45 g of ClCH}_2\text{COOH is added to 500 mL of water, its freezing point drops by 0.5 } ^\circ \text{C.}$ $\text{The dissociation constant of ClCH}_2\text{COOH is } x \times 10^{-3}. \text{ The value of } x \text{ is:}$ $\text{(Rounded off to the nearest integer)}$ $\left[ K_f(\text{H}_2\text{O}) = 1.86 \text{ kgmol}^{-1} \right]$ 2 216 JEE MCQ NEW $36 \times 10^{-3}$, $29 \times 10^{-3}$... 1 Edit Delete
21398 $\text{The mole fraction of glucose (C}_6\text{H}_{12}\text{O}_6\text{) in an aqueous binary solution is 0.1. The mass percentage of water in it to the nearest integer is:}$ 2 216 JEE MCQ NEW $44\%$, $49\%$... 3 Edit Delete
21397 $\text{When 12.2 g of benzoic acid is dissolved in 100 g of water, the freezing point of the solution was found to be }$ $-0.93 \, ^\circ \text{C. The number } (n) \text{ of benzoic acid molecules associated (assuming 100\% association) is:}$ $\left( K_f(\text{H}_2\text{O}) = 1.86 \, \text{K kg mol}^{-1} \right)$ 2 216 JEE MCQ NEW 3, 1... 3 Edit Delete
21396 $\text{If a compound AB dissociates to the extent of 75\% in an aqueous solution, the molality of the solution which shows a 2.5 K rise in the boiling point of the solution is:}$ $\text{(Rounded-off to the nearest integer) } [K_b = 0.52 \text{ K kg mol}^{-1}]$ 2 216 JEE MCQ NEW 1, 5... 1 Edit Delete
21395 $1$ $\text{molal aqueous solution of an electrolyte } \text{A}_2\text{B}_3 \text{ is } 60\% \text{ ionised.}$ $\text{The boiling point of the solution at } 1 \text{ atm is-. (Rounded-off to the nearest integer)}$ $\text{[Given } K_b \text{ for (H}_2\text{O)} = 0.52 \text{ K kg mol}^{-1}]$ 2 216 JEE MCQ NEW $373 \text{ K}$, $380 \text{ K}$... 3 Edit Delete
21394 $\text{The vapour pressure of pure A is 50 mm of Hg and the vapour pressure of pure B is 100 mm of Hg in a mixture of liquid A and B mole fraction of A is 0.3, then the mole fraction of B in the vapour phase is } \frac{x}{17}. \text{ The value of } x \text{ is:}$ 2 216 JEE MCQ NEW $14$, $17$... 1 Edit Delete
21393 $\text{What is the concentration of a glucose solution in intravenous}$ $\text{injection in gram/lit which is isotonic with blood solution which has}$ $\text{osmotic pressure 7.93 bar at 300 K?}$ 2 216 JEE MCQ NEW $62 \text{ g/L}$, $0.58 \text{ g/L}$... 4 Edit Delete
21392 $\text{The resistivity of a } 0.8 \text{ M solution of an electrolyte is } 5 \times 10^{-3} \, \Omega \, \text{cm. If } \lambda_m = 2.5 \times 10^x,$ $\text{the value of } x \text{ is:}$ 2 214 JEE MCQ NEW $4$, $8$... 3 Edit Delete
21391 $\text{Resistance of 0.2 M solution of an electrolyte is } 50 \, \Omega. \text{ The specific conductance of the solution is } 1.3 \, \text{S m}^{-1}. \text{ If the resistance of the 0.4 M solution of the same electrolyte is } 260 \, \Omega, \text{ its molar conductivity is:}$ 2 214 JEE MCQ NEW $6.25 \times 10^{-4} \, \text{S m}^2 \text{ mol}^{-1}$, $625 \times 10^{-4} \, \text{S m}^2 \text{ mol}^{-1}$... 1 Edit Delete
21390 $\text{In the given reaction sequence, the standard electrode potentials (in volts) are provided for each step as follows:}$ $\text{FeO}_4^{2-} \xrightarrow{+2.0 \text{ V}} \text{Fe}^{3+} \xrightarrow{+0.8 \text{ V}} \text{Fe}^{2+} \xrightarrow{-0.5 \text{ V}} \text{Fe}^0$ $\text{The value of } E^\Theta_{\text{FeO}_4^{2-}/\text{Fe}^{2+}} \text{ is:}$ 2 214 JEE MCQ NEW $1.7 \text{ V}$, $1.2 \text{ V}$... 1 Edit Delete
21389 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{For KI, molar conductivity increases steeply with dilution.}$ $\text{Statement II:}$ \text{For carbonic acid, molar conductivity increases slowly with dilution.}$ $\text{In the light of the above statements, choose the correct answer from the options given below:}$ 2 214 JEE MCQ NEW $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 3 Edit Delete
21388 $\text{Electrolysis of } \text{Fe}_2(\text{SO}_4)_3 \text{ solution is carried out for 'x' minutes with a current of } 1.5 \text{ A, depositing } 0.3482 \text{ g of Fe. What is the value of } x \text{ to the nearest integer?}$ $\text{[Given: } 1 \text{ F } = 96500 \text{ C mol}^{-1}]$ $\text{Atomic mass of Fe } = 56 \text{ g mol}^{-1}$ 2 214 JEE MCQ NEW $20$, $25$... 1 Edit Delete
21387 $\text{Consider the given half-cell reactions:}$ $\text{Fe}^{2+} \rightarrow \text{Fe}^{3+} + e^- \quad E^0_{\text{Fe}^{3+}/\text{Fe}^{2+}} = 0.77 \text{ V}}$ $2\text{I}^- \rightarrow \text{I}_2 + 2e^- \quad E^0_{\text{I}_2/\text{I}^-} = 0.54 \text{ V}}$ $\text{The standard electrode potential for the spontaneous reaction in the}$ $\text{cell is } x \times 10^{-2} \text{V at } 298 \text{ K.}$ $\text{The value of } x \text{ is: (Nearest Integer)}$ 2 214 JEE MCQ NEW 32, 23... 2 Edit Delete
21386 $\text{Determine the cell constant of a conductivity cell containing a } 0.01 \text{ M KCl solution at } 298 \text{ K.}$ $\text{The given data includes a resistance of } 1750 \, \Omega$ $\text{and a conductivity of } 0.152 \times 10^{-3} \, \text{S cm}^{-1}.$ 2 214 JEE MCQ NEW $266 \times 10^{-3} \, \text{m}^{-1}$, $166 \times 10^{-3} \, \text{cm}^{-1}$... 3 Edit Delete
21385 $\text{The graph represents the variation of molar conductance (} \Lambda_m \text{) with the square root of concentration (} \sqrt{C} \text{) for two electrolytes, 'A' and 'B'. Based on the graph, the nature of both electrolytes is:}$ 2 214 JEE MCQ NEW $\text{A} \rightarrow \text{Strong Electrolyte, B} \rightarrow \text{Strong Electrolyte}$, $\text{A} \rightarrow \text{Weak Electrolyte, B} \rightarrow \text{Strong Electrolyte}$... 3 Edit Delete
21384 $\text{The EMF of a cell is given as 0.83 V. The cell can be represented as:}$ $\text{Ti|Ti}^{+}(0.001\text{M})||\text{Cu}^{2+}(0.01\text{M})|\text{Cu}}$ $\text{The EMF of this cell could be increased by:}$ 2 214 JEE MCQ NEW $\text{increasing conc. of } \text{Cu}^{2+}, \text{ keeping conc. of } \text{Ti}^{+} \text{ constant.}$, $\text{increasing conc. of } \text{Ti}^{+}, \text{ keeping conc. of } \text{Cu}^{2+} \text{ constant.}$... 1 Edit Delete
21383 $\text{The limiting molar conductivities of a divalent cation } (\text{M}^{2+}) \text{ and a}$ $\text{monovalent anion } (\text{A}^-) \text{ are } 57 \text{ S cm}^2 \text{ mol}^{-1} \text{ and } 73 \text{ S cm}^2 \text{ mol}^{-1}$ $\text{respectively. What is the limiting molar conductivity of their}$ $\text{compound in S cm}^2 \text{ mol}^{-1}?$ 2 214 JEE MCQ NEW $203$, $421$... 1 Edit Delete
21382 $\text{Identify the change in Mn's oxidation state during the cell reaction in a dry cell while powering a clock.}$ 2 214 JEE MCQ NEW $+3 \rightarrow +4$, $+2 \rightarrow +7$... 3 Edit Delete
21381 $\text{If one coulomb of electric charge is passed through a solution of silver nitrate (AgNO}_3\text{) during electrolysis, what is the mass of silver (in milligrams) deposited at the electrode?}$ $\text{(Molar mass of Ag = 108 g/mol)}$ 2 214 JEE MCQ NEW $1.12 \text{ mg}$, $3.26 \text{ mg}$... 1 Edit Delete
21380 $\text{For a given reaction in an acidic medium,}$ $5e^- + 8\text{H}^+ + \text{MnO}_4^- (0.001\ M) \rightarrow \text{Mn}^{2+}(0.1\ M) + 4\text{H}_2\text{O}$ $\text{(Given values are: } E^\circ_{\text{cell}} = 1.54\ \text{V}, E_{\text{cell}} = 1.2832\ \text{V})$ $\text{The } pH \text{ of the solution is:}$ 2 214 JEE MCQ NEW $2.46$, $3.52$... 1 Edit Delete
21379 $\text{How many moles of electrons are required to reduce 1 mole of permanganate ions into manganese dioxide?}$ 2 214 JEE MCQ NEW $3$, $6$... 1 Edit Delete
21378 $\text{For a given cell at T K,}$ $\text{Pt}/\text{H}_2(g)(1 \text{ bar})/\text{H}^+(1 \text{ M}) \parallel \text{Fe}^{3+}/\text{Fe}^{2+}/\text{Pt}$ $\text{E cell} = 0.712 \text{ V}$ $\text{E}^0 \text{ cell} = 0.770 \text{ V}$ $\text{If } \left[ \frac{\text{Fe}^{2+}}{\text{Fe}^{3+}} \right] \text{ is } t, \text{ then the value of } t \text{ in the expression } \left( \frac{t}{5} \right) \text{ is:}$ $\text{(Given: } \left( \frac{2.303 \frac{RT}{F}}{} = 0.058 \right))$ 2 214 JEE MCQ NEW 4, 6... 3 Edit Delete
21377 $\text{Consider the following cell representation:}$ $\text{Pt/H}_2(1 \text{ atm})/\text{H}^+(1 \text{ M}) \parallel \text{Fe}^{3+}/\text{Fe}^{2+}$ $\text{The ratio of the concentration of Fe}^{2+} \text{ to Fe}^{3+} \text{ is-}$ $[\text{Given } E_{\text{cell}} = 0.712, E^0_{\text{cell}} = 0.771]$ 2 214 JEE MCQ NEW $12$, $10$... 2 Edit Delete
21376 $\text{How many elements can liberate H}_2 \text{ from dilute acids?}$ $\text{V, Cr, Mn, Fe, Co, Ni, Cu}$ 2 214 JEE MCQ NEW $5$, $4$... 4 Edit Delete
21375 $\text{For the following cell with hydrogen electrodes at two different pressures } p_1 \text{ and } p_2$ $\text{Pt(H}_2\text{)} \mid \text{H}^+(\text{aq}) \mid \text{Pt (H}_2\text{)}$ $p_1 \quad 1\text{M} \quad p_2$ $\text{emf is given by:}$ 2 214 JEE MCQ NEW $\frac{RT}{F} \log_e \frac{P_1}{p_2}$, $\frac{RT}{2F} \log_e \frac{p_2}{P_1}$... 2 Edit Delete
21374 $\text{What is the nearest integer value of } x \text{ for the Gibbs free energy change at } 298 \text{ K, expressed as } x \times 10^{-1} \text{ kJmol}^{-1} \text{ for the given reaction.}$ $\text{Cu}(s) + \text{Sn}^{2+}(0.001M) \rightarrow \text{Cu}^{2+}(0.01M) + \text{Sn}(s)$ $\text{Given: } E^\circ_{\text{Cu}^{2+}/\text{Cu}} = 0.34 \text{ V}; \; E^\circ_{\text{Sn}^{2+}/\text{Sn}} = -0.14 \text{ V}; \; F = 96500 \text{ C mol}^{-1}$ 2 214 JEE MCQ NEW 873, 983... 2 Edit Delete
21373 $\text{The limiting molar conductivities of NaI, NaNO}_3, \text{ and AgNO}_3 \text{ are } 12.7 \ S \ m^2 \ mole^{-2}, 12 \ S \ m^2 \ mole^{-2} \text{ and } 13.3 \ S \ m^2 \ mole^{-2} \text{ respectively (all at } 25^\circ\text{C). The limiting molar conductivity of AgI at this temperature is:}$ 2 214 JEE MCQ NEW $14 \ S \ m^2 \ mole^{-2}$, $16 \ S \ m^2 \ mole^{-2}$... 1 Edit Delete
21372 $\text{For a cell reaction involving a two-electron change, the standard Emf of the cell is found to be } 0.295 \text{ V at } 25^\circ \text{C. The equilibrium constant of the reaction at } 25^\circ \text{C will be:}$ 2 214 JEE MCQ NEW $1 \times 10^{-10}$, $29.5 \times 10^{-2}$... 4 Edit Delete
21371 $\text{Zn}(s) + \text{Cu}^{2+}(0.1\text{M}) \rightarrow \text{Zn}^{2+}(1\text{M}) + \text{Cu}(s)$ $\text{For the redox reaction taking place in a cell, } E_{\text{cell}}^\circ \text{ is 1.10 volt. } E_{\text{cell}} \text{ for the cell will be: } \left(2.303 \frac{RT}{F} = 0.0591\right)$ 2 214 JEE MCQ NEW 2.14 \text{ V}, 1.80 \text{ V}... 3 Edit Delete
21370 $\text{The standard emf of a cell, involving one electron change is found to be } 0.591 \text{ V at } 25^\circ\text{C.}$ $\text{The equilibrium constant of the reaction is:}$ $\text{(Given F = 96500 C mol}^{-1}\text{)}$ 2 214 JEE MCQ NEW $1.0 \times 10^1$, $1.0 \times 10^5$... 3 Edit Delete
21369 $\text{Aluminium oxide may be electrolysed at } 1000 \, ^\circ \text{C to furnish aluminium metal.}$ $\text{The cathode reaction is } \text{Al}^{3+} + 3\text{e}^- \rightarrow \text{Al.}$ $\text{To prepare } 5.12 \, \text{kg of aluminium metal by this method would require:}$ $\text{(Atomic mass = 27 amu; 1 faraday=96,500 Coulombs)}$ 2 214 JEE MCQ NEW $5.49 \times 10^1 \, \text{C of electricity}$, $5.49 \times 10^4 \, \text{C of electricity}$... 4 Edit Delete
21368 $\text{The reduction potential of hydrogen half-cell will be negative if:}$ $1. \text{P(H}_2\text{) = 1 atm and [H}^+\text{] = 2.0 M}$ $2. \text{P(H}_2\text{) = 1 atm and [H}^+\text{] = 1.0 M}$ $3. \text{P(H}_2\text{) = 2 atm and [H}^+\text{] = 1.0 M}$ $4. \text{P(H}_2\text{) = 2 atm and [H}^+\text{] = 2.0 M}$ 2 214 JEE MCQ NEW $\text{P(H}_2\text{) = 1 atm and [H}^+\text{] = 2.0 M}$, $\text{P(H}_2\text{) = 1 atm and [H}^+\text{] = 1.0 M}$... 3 Edit Delete
21367 $\text{Given below are the half-cell reactions:}$ $\text{Mn}^{2+} + 2\text{e}^- \rightarrow \text{Mn}; \ E^\circ = -1.18 \ \text{V}$ $2 \left( \text{Mn}^{3+} + \text{e}^- \rightarrow \text{Mn}^{2+} \right); \ E^\circ = +1.51 \ \text{V}$ $\text{The } E^\circ \text{ for } 3\text{Mn}^{2+} \rightarrow \text{Mn} + 2\text{Mn}^{3+} \text{ will be:}$ 2 214 JEE MCQ NEW $-2.69 \ \text{V}; \text{ the reaction will occur}$, $-0.33 \ \text{V}; \text{ the reaction will not occur}$... 4 Edit Delete
21366 $\text{The decreasing order of electrical conductivity of the following aqueous solutions is:}$ $0.1 \text{ M Formic acid (A),}$ $0.1 \text{ M Acetic acid (B),}$ $0.1 \text{ M Benzoic acid (C)}$ 2 214 JEE MCQ NEW $\text{A > B > C}$, $\text{A > C > B}$... 2 Edit Delete
21365 $\text{Consider the values of reduction potential:}$ $\text{Co}^{3+} + e^- \rightarrow \text{Co}^{2+}; \ E^\circ = +1.81 \ \text{V}$ $\text{Pb}^{4+} + 2e^- \rightarrow \text{Pb}^{2+}; \ E^\circ = +1.67 \ \text{V}$ $\text{Ce}^{4+} + e^- \rightarrow \text{Ce}^{3+}; \ E^\circ = +1.61 \ \text{V}$ $\text{Bi}^{3+} + 3e^- \rightarrow \text{Bi}; \ E^\circ = +0.20 \ \text{V}$ $\text{The oxidizing power of the species will increase in the order of:}$ 2 214 JEE MCQ NEW $\text{Co}^{3+} < \text{Ce}^{4+} < \text{Bi}^{3+} < \text{Pb}^{4+}$, $\text{Co}^{3+} < \text{Pb}^{4+} < \text{Ce}^{4+} < \text{Bi}^{3+}$... 4 Edit Delete
21364 $\text{The standard Gibbs energy for the given cell reaction in kJ mol}^{-1} \text{ at } 298 \text{ K is:}$ $\text{Zn}(s) + \text{Cu}^{2+}(aq) \rightarrow \text{Zn}^{2+}(aq) + \text{Cu}(s)$ $E^\circ(\text{cell}) = 2\text{V at } 298 \text{ K}$ $\text{(Faraday's constant, F = 96000 C mol}^{-1})$ 2 214 JEE MCQ NEW $-192 \text{ kJ mol}^{-1}$, $192 \text{ kJ mol}^{-1}$... 3 Edit Delete
21363 $\text{A solution of Ni(NO}_3\text{)}_2 \text{ is electrolysed between platinum electrodes using 0.1 Faraday electricity. The number of moles of Ni that will be deposited at the cathode are:}$ 2 214 JEE MCQ NEW $0.10$, $0.05$... 2 Edit Delete
21362 $\text{For the given cell:}$ $\text{Cu(s)}|\text{Cu}^{2+}(\text{C}_1\text{M})||\text{Cu}^{2+}(\text{C}_2\text{M})|\text{Cu(s)}$ $\text{change in Gibbs energy (}\Delta G\text{) is negative, if:}$ 2 214 JEE MCQ NEW $\text{C}_1 = 2\text{C}_2$, $\text{C}_2 = \frac{\text{C}_1}{\sqrt{2}}$... 4 Edit Delete
21361 $\text{The variation of molar conductivity with the concentration of an electrolyte (X) in an aqueous solution is shown in the given figure.}$ $\text{The electrolyte X is:}$ 2 214 JEE MCQ NEW $\text{CH}_3\text{COOH}$, $\text{KNO}_3$... 1 Edit Delete
21360 $\text{An oxidation-reduction reaction in which 3 electrons are transferred has a } \Delta G^\circ \text{ of 17.37 kJ mol}^{-1} \text{ at 25}^\circ\text{C. The value of } E^\circ_{\text{cell}} \text{ (in V) is A} \times 10^{-2}. \text{ The value of A is-}$ $\text{(1 F = 96,500 C mol}^{-1})$ 2 214 JEE MCQ NEW $-6$, $4$... 1 Edit Delete
21359 $\text{The Gibbs energy change (in J) for the given reaction at } [\text{Cu}^{2+}] = [\text{Sn}^{2+}] = 1 \text{ M and } 298 \text{ K is-}$ $\text{Cu(s)} + \text{Sn}^{2+}(\text{aq.}) \rightarrow \text{Cu}^{2+}(\text{aq.}) + \text{Sn(s)}$ $E^0_{\text{Sn}^{2+}/\text{Sn}} = -0.16 \text{ V}, \quad E^0_{\text{Cu}^{2+}/\text{Cu}} = 0.34 \text{ V}$ $\text{Take } F = 96500 \text{ C mol}^{-1}$ 2 214 JEE MCQ NEW 97850 \text{ J}, 3500 \text{ J}... 4 Edit Delete
21358 $\text{Emf of the following cell at 298 K in V is } x \times 10^{-2}. \text{ The cell is Zn|Zn}^{2+} (0.1 \text{ M}) || \text{Ag}^{+} (0.01 \text{ M}) | \text{Ag. The value of } x \text{ is- (Rounded off to the nearest integer)}$ $\text{Given; } E^\circ_{\text{Zn}^{2+}/\text{Zn}} = -0.76 \text{ V}$ $E^\circ_{\text{Ag}^{+}/\text{Ag}} = +0.80 \text{ V}; \frac{2.303RT}{F} = 0.059$ 2 214 JEE MCQ NEW 157, 147... 2 Edit Delete
21357 $\text{Compound A used as a strong oxidizing agent is amphoteric in nature. It is part of lead storage batteries. Compound A is:}$ 2 214 JEE MCQ NEW $\text{PbO}_2$, $\text{PbO}$... 1 Edit Delete
21356 $\text{For a given cell, a 0.1 molar solution has a resistance of } 20 \, \Omega \text{ and}$ $\text{molar conductivity of } 0.154 \times 10^{-3} \, S \, \text{cm}^2 \, \text{mol}^{-1}.$ $\text{The value of the cell constant is:}$ 2 214 JEE MCQ NEW $3.08 \times 10^{-7} \, \text{cm}^{-1}$, $30.8 \times 10^{-7} \, \text{cm}^{-1}$... 1 Edit Delete
21355 $\text{Consider the following sequence of reactions:}$ $\text{But-2-yne} \xrightarrow{\text{Na-Liq. NH}_3} \text{A} \xrightarrow{\text{Cold, alkaline, dil. KMnO}_4} \text{B}$ $\text{The number of oxygen atoms present in one molecule of B is/are:}$ 2 213 JEE MCQ NEW $2$, $3$... 1 Edit Delete
21354 $\text{Which is the most stable among the following is-}$ 2 213 JEE MCQ NEW $\text{Cyclopropenyl cation}$, $\text{Cyclopropenyl anion}$... 1 Edit Delete
21353 $\text{Which of the following reactions will yield 2,2-dibromopropane?}$ 2 213 JEE MCQ NEW $\text{CH}_3\text{C} \equiv \text{CH} + 2\text{HBr} \rightarrow$, $\text{CH}_3\text{CH} = \text{CHBr} + \text{HBr} \rightarrow$... 1 Edit Delete
21352 $\text{How many sp}^2 \text{ carbon atoms are present in the product formed from the given reaction?}$ 2 213 JEE MCQ NEW $3$, $0$... 3 Edit Delete
21351 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{On nitration of m-xylene with HNO}_3, \text{ H}_2\text{SO}_4 \text{ followed by oxidation, 4-nitrobenzene-1, 3-dicarboxylic acid is obtained as the major product.}$ $\text{Statement II:}$ \text{CH}_3 \text{ group is o/p-directing while NO}_2 \text{ group is m-directing group.}$ $\text{In the light of the above statements, choose the correct answer from the options given below:}$ 2 213 JEE MCQ NEW $\text{Both Statement I and Statement II are false}$, $\text{Statement I is false but Statement II is true}$... 3 Edit Delete
21350 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{One mole of propyne reacts with excess of sodium to liberate half a mole of } \text{H}_2 \text{ gas.}$ $\text{Statement II:}$ \text{4g of propyne reacts with NaNH}_2 \text{ to liberate NH}_3 \text{ gas which occupies 224 mL at STP.}$ $\text{In the light of the above statements, choose the most appropriate answer from the options given below:}$ 2 213 JEE MCQ NEW $\text{Statement I is correct but Statement II is incorrect.}$, $\text{Both Statement I and Statement II are incorrect.}$... 1 Edit Delete
21349 $\text{When a propane molecule undergoes chlorination under photochemical conditions, it gives two di-chloro products, } x \text{ and } y. \text{ Among these, } x \text{ is optically active. How many structural isomers of tri-chloro products will be obtained from } x \text{ when it is further treated with chlorine under photochemical conditions?}$ $1.\ 4$ $2.\ 2$ $3.\ 5$ $4.\ 3$ 2 213 JEE MCQ NEW $4$, $2$... 4 Edit Delete
21348 $\text{The major product (F) of the above-given reaction sequence is:}$ 2 213 JEE MCQ NEW $\text{OCH}_3 \quad \text{NH}_2$, $\text{OCH}_3 \quad \text{HO} \quad \text{NH}_2$... 4 Edit Delete
21347 $\text{In the following reaction sequence, identify the major product 'C':}$ $\text{C}_8\text{H}_{10} \xrightarrow{\text{HNO}_3/\text{H}_2\text{SO}_4} \text{A} \xrightarrow{\text{Br}_2/\Delta} \text{B} \xrightarrow{\text{alcoholic KOH}} \text{C}$ 2 213 JEE MCQ NEW $\begin{array}{c} \text{NO}_2 \\ \text{I} \\ \text{C} = \text{CH}_2 \end{array}$, $\begin{array}{c} \text{O}_2\text{N} \\ \text{CH} = \text{CH}_2 \end{array}$... 2 Edit Delete
21346 $\text{In the given reaction, identify compounds } A \text{ and } B:$ $\text{CH}_3\text{C}_6\text{H}_5 \xrightarrow{\text{Cl}_2 (2 \text{ eq}), \text{hv}} A \xrightarrow{(i) \text{NaOH} \\ (ii) \text{dil. HCl}} B$ 2 213 JEE MCQ NEW $(A) \ \text{CH}_2\text{Cl} \ \text{(B)} \ \text{COOH}$, $(A) \ \text{CHCl}_2 \ \text{(B)} \ \text{COOH}$... 3 Edit Delete
21345 $\text{Seven compounds are given below. How many of the following will give Friedel Craft's reaction?}$ 2 213 JEE MCQ NEW $3$, $7$... 1 Edit Delete
21344 $\text{Which of the following molecules is aromatic?}$ 2 213 JEE MCQ NEW $\text{Option 1}$, $\text{Option 2}$... 2 Edit Delete
21343 $\text{Statement I:}$ $\text{Alkene has weak } \pi \text{ bond, therefore less stable than alkane.}$ $\text{Statement II:}$ $\text{Weak } \pi \text{ bond is less strong than the carbon-carbon sigma bond.}$ 2 213 JEE MCQ NEW $\text{Statement I is correct; Statement II is correct}$, $\text{Statement I is correct; Statement II is incorrect}$... 1 Edit Delete
21342 $\text{The total number of secondary carbon atoms present in the given compound is:}$ $\text{CH}_3\text{C(CH}_3\text{)}\text{CH}_2\text{CH(CH}_3\text{)}\text{CH}_3$ 2 213 JEE MCQ NEW 1, 2... 1 Edit Delete
21341 51 2 213 JEE MCQ NEW 1, 2... 1 Edit Delete
21340 $\text{Consider the following sequence of reactions and identify the unknown reagents (A) and (B) respectively.}$ $\text{CH}_3 - \text{CH}_2 - \text{CH}_2 - \text{Br} \xrightarrow{(A)} \text{P} \xrightarrow{(B)} \text{CH}_3 - \text{CHBr} - \text{CH}_3 \text{ (Major)}$ 2 213 JEE MCQ NEW $(A) : \text{Dil. aq NaOH at } 20^\circ\text{C} \quad (B) : \text{HBr, CH}_3\text{COOH}$, $(A) : \text{Dil. aq NaOH at } 20^\circ\text{C} \quad (B) : \text{Br}_2, \text{CHCl}_3$... 3 Edit Delete
21339 $\text{Reagents } A \text{ and } B \text{ in the following reaction are, respectively:}$ 2 213 JEE MCQ NEW $(A) \ \text{O}_3/\text{Zn} - \text{H}_2\text{O}; \ (B) \ \text{H}_3\text{O}^+$, $(A) \ \text{O}_3/\text{Zn} - \text{H}_2\text{O}; \ (B) \ \text{LiAlH}_4$... 3 Edit Delete
21338 $\text{How many } \pi \text{ bonds are present in the product (B) of the reaction illustrated below?}$ $\text{C}_3\text{H}_7 \xrightarrow{\text{KMnO}_4, \text{OH}^-, \Delta} (\text{A}) \xrightarrow{\text{H}_3\text{O}^+} (\text{B})$ 2 213 JEE MCQ NEW $4$, $3$... 1 Edit Delete
21337 $\text{Identify the correct statement on physical properties of (A) and (B):}$ $\text{Birch Reduction} \rightarrow (\text{A})$ $+\text{H}_2, \text{Lindlar's catalyst} \rightarrow (\text{B})$ $\text{CH}_3\equiv\text{C}-\text{C}\equiv\text{CH}_3$ 2 213 JEE MCQ NEW $\text{Melting Point: A > B; Boiling Point: A > B}$, $\text{Melting Point: A < B; Boiling Point: A > B}$... 3 Edit Delete
21336 $\text{Consider the following molecule:}$ $\text{The correct order of the acidic strength of marked hydrogen is:}$ 2 213 JEE MCQ NEW $H_A > H_D > H_B > H_C$, $H_B > H_A > H_D > H_C$... 1 Edit Delete
21335 $\text{Consider the following reactions:}$ $\text{2-Methylpropene} \xrightarrow{\text{Cold alkaline } \text{KMnO}_4} \text{P}$ $\text{2-Methylpropene} \xrightarrow{\text{Hot } \text{KMnO}_4} \text{Q}$ $\text{The products P and Q, respectively, are:}$ 2 213 JEE MCQ NEW $\begin{array}{c} \text{OH} \\ | \\ \text{CH}_2 \end{array} \text{C} \begin{array}{c} \text{OH} \\ | \\ \text{CH} \\ | \\ \text{CH}_3 \end{array} \text{CH}_3 \text{ and } \begin{array}{c} \text{OH} \\ | \\ \text{CH}_3 \end{array} \text{CH} \begin{array}{c} \text{OH} \\ | \\ \text{CH}_3 \end{array}$, $\begin{array}{c} \text{OH} \\ | \\ \text{CH}_2 \end{array} \text{C} \begin{array}{c} \text{OH} \\ | \\ \text{CH} \\ | \\ \text{CH}_3 \end{array} \text{CH}_3 \text{ and } \begin{array}{c} \text{O} \\ || \\ \text{C} \\ | \\ \text{CH}_3 \end{array} \text{CH}_3$... 2 Edit Delete
21334 $\text{The product formed in the reaction given below is:}$ $\text{(Image of reaction with } \text{HBr and heat)}$ 2 213 JEE MCQ NEW $\text{(Image of option 1)}$, $\text{(Image of option 2)}$... 4 Edit Delete
21333 $\text{Geometrical isomerism is not shown by:}$ $1.\ 1,1\text{-Dichloro-1-pentene}$ $2.\ 1,2\text{-Dichloro-1-pentene}$ $3.\ 1,3\text{-Dichloro-2-pentene}$ $4.\ 1,4\text{-Dichloro-2-pentene}$ 2 213 JEE MCQ NEW $1,1\text{-Dichloro-1-pentene}$, $1,2\text{-Dichloro-1-pentene}$... 1 Edit Delete
21332 $\text{Butene may be converted to butane by a reaction with:}$ 2 213 JEE MCQ NEW $\text{Zn - HCl}$, $\text{Sn-HCl}$... 4 Edit Delete
21331 $\text{A non-aromatic compound among the following is:}$ 2 213 JEE MCQ NEW $\text{Option 1: Non-Aromatic}$, $\text{Option 2: Aromatic}$... 1 Edit Delete
21330 $\text{The carbonyl compounds that cannot be prepared by addition of water on an alkyne in the presence of HgSO}_4 \text{ and H}_2\text{SO}_4, \text{ among the following, is:}$ 2 213 JEE MCQ NEW $\text{CH}_3\text{C} \equiv \text{C} \text{CH}_3 \xrightarrow{\text{HgSO}_4, \text{H}_2\text{SO}_4} \text{O} = \text{C} \text{CH}_3$, $\text{Cyclohexanone}$... 3 Edit Delete
21329 $\text{Which among the following pairs of structures will give different products on ozonolysis?}$ $\text{(Consider that the double bonds in the structures are rigid and not delocalized)}$ 2 213 JEE MCQ NEW $\text{1.}$ $\text{(CH}_3\text{)}_2\text{C}_6\text{H}_4 \leftrightarrow \text{(CH}_3\text{)}_2\text{C}_6\text{H}_4$, $\text{2.}$ $\text{(CH}_3\text{)}_2\text{C}_6\text{H}_4 \leftrightarrow \text{(CH}_3\text{)}_2\text{C}_6\text{H}_4$... 3 Edit Delete
21328 $\text{Which compound among the following is not categorized as benzenoid?}$ 2 213 JEE MCQ NEW $\text{Compound 1}$, $\text{Compound 2}$... 2 Edit Delete
21327 $\text{In the presence of sunlight, benzene reacts with } \text{Cl}_2 \text{ to give product } 'X'. \text{ The number of hydrogens in } 'X' \text{ is:}$ 2 213 JEE MCQ NEW $\text{Five (5)}$, $\text{Three (3)}$... 3 Edit Delete
21326 $\text{Which of the following is not aromatic?}$ 2 213 JEE MCQ NEW $\text{Option 1}$, $\text{Option 2}$... 3 Edit Delete
21325 $\text{Which of the following compounds will predominantly yield a meta-substituted product with respect to the methyl group upon halogenation?}$ 2 213 JEE MCQ NEW $\text{CHO}$, $\text{NO}_2$... 3 Edit Delete
21324 $\text{What is the major product of the following reaction?}$ $\text{(i) Hg(OAc)_2, H_2O}$ $\text{(ii) NaBH}_4 \rightarrow$ 2 213 JEE MCQ NEW $\text{Option 1:}$, $\text{Option 2:}$... 1 Edit Delete
21323 $\text{Consider the following reaction:}$ $\text{Bu} - \equiv \text{CH} \xrightarrow{1.\ \text{nBuLi}} \xrightarrow{2.\ \text{n-C}_5\text{H}_{11}\text{Cl}} \xrightarrow{3.\ \text{H}_2\text{-Pd, BaSO}_4} \text{Major Product}$ $\text{The major product in the above reaction is:}$ 2 213 JEE MCQ NEW $\text{n-Bu} - \text{C}_5\text{H}_{11}$, $\text{n-Bu} - \text{C}_5\text{H}_{11}$... 1 Edit Delete
21322 $\text{Consider the reaction,}$ $\text{(i) Fe, Br}_2$ $\text{(ii) Cl}_2/\Delta$ $\text{(iii) alc. KOH}$ $\rightarrow \text{major product}$ $\text{Major product is:}$ 2 213 JEE MCQ NEW $\begin{array}{c} \text{Br} \\ \text{C}_6\text{H}_4\text{CH}_2\text{CH}_3 \end{array}$, $\begin{array}{c} \text{C} \equiv \text{CH} \\ \text{C}_6\text{H}_4\text{Br} \end{array}$... 1 Edit Delete
21321 $\text{Identify the intermediate [A] in the following reaction:}$ $\left( \text{C}_6\text{H}_5\text{COO} \right)_2 \xrightarrow{\Delta} \text{A} \rightarrow 2\cdot\text{C}_6\text{H}_5 + 2\text{CO}_2$ 2 213 JEE MCQ NEW $\text{C}_6\text{H}_5 - \overset{\cdot}{\text{C}} = \overset{\cdot}{\text{O}}$, $\text{C}_6\text{H}_5 - \overset{\cdot}{\text{C}} = \overset{\cdot}{\text{O}}$... 3 Edit Delete
21320 $\text{Identify the staggered conformation with maximum dihedral angle:}$ 2 213 JEE MCQ NEW $\text{H}$ $\text{H}$ $\text{CH}_3$ $\text{CH}_3$, $\text{CH}_3$ $\text{H}$ $\text{H}$ $\text{CH}_3$... 2 Edit Delete
21319 $\text{Which of the following compounds has the lowest boiling point?}$ $1.\ \text{n-Butane}$ $2.\ \text{Isobutene}$ $3.\ \text{1-Butene}$ $4.\ \text{1-Butyne}$ 2 213 JEE MCQ NEW $\text{n-Butane}$, $\text{Isobutene}$... 2 Edit Delete
21318 $\text{The isomer of hexane that can yield two different monochlorinated products among the five isomers is:}$ 2 213 JEE MCQ NEW $\text{2-Methylpentane}$, $\text{2,2-Dimethylbutane}$... 3 Edit Delete
21317 $\text{The reaction of toluene with Cl}_2 \text{ in the presence of FeCl}_3 \text{ gives predominantly:}$ 2 213 JEE MCQ NEW $\text{Benzoyl chloride}$, $\text{Benzyl chloride}$... 3 Edit Delete
21316 $\text{The hydrocarbon which can react with sodium in liquid ammonia is:}$ 2 213 JEE MCQ NEW $\text{CH}_3\text{CH}_2\text{C} \equiv \text{CH}$, $\text{CH}_3\text{CH} = \text{CHCH}_3$... 1 Edit Delete
21315 $\text{Which of the following compounds is non-aromatic?}$ 2 213 JEE MCQ NEW $\text{Compound with S}$, $\text{Biphenyl}$... 4 Edit Delete
21314 $\text{Which reagent will convert 2-Hexyne to trans-2-Hexene?}$ 2 213 JEE MCQ NEW $\text{Li/NH}_3$, $\text{Pd/BaSO}_4$... 1 Edit Delete
21313 $\text{The compound among the following that shows geometrical isomerism is:}$ $1.\ \text{1-Phenyl-2-butene}$ $2.\ \text{3-Phenyl-1-butene}$ $3.\ \text{2-Phenyl-1-butene}$ $4.\ \text{1,1-Diphenyl-1-propene}$ 2 213 JEE MCQ NEW $\text{1-Phenyl-2-butene}$, $\text{3-Phenyl-1-butene}$... 1 Edit Delete
21312 $\text{The least resonance stabilized molecule among the following is:}$ 2 213 JEE MCQ NEW $\text{Aromatic}$, $\text{Non Aromatic}$... 2 Edit Delete
21311 $\text{The trans-alkenes are formed by the reduction of alkynes with:}$ 2 213 JEE MCQ NEW $\text{H}_2 - \text{Pd/C, BaSO}_4$, $\text{NaBH}_4$... 3 Edit Delete
21310 $\text{Consider the following reactions:}$ $\text{Ag}_2\text{O} \xrightarrow{\Delta} \text{ppt}$ $\text{Hg}^{2+}/\text{H}^+ \xrightarrow{\text{NaBH}_4} \text{ZnCl}_2$ $\text{H}_2\text{O} \rightarrow \text{Turbidity within 5 minutes}$ $\text{conc. HCl}$ 2 213 JEE MCQ NEW $\text{CH}_3 - \text{C} \equiv \text{CH}$, $\text{CH}_2 = \text{CH}_2$... 1 Edit Delete
21309 $\text{The increasing order of the reactivity of the following compounds}$ $\text{toward electrophilic aromatic substitution reactions (EASR) is:}$ $\begin{array}{ccc} \text{Cl} & \text{CH}_3 & \text{COCH}_3 \\ (\text{I}) & (\text{II}) & (\text{III}) \end{array}$ 2 213 JEE MCQ NEW $\text{III} < \text{II} < \text{I}$, $\text{III} < \text{I} < \text{II}$... 2 Edit Delete
21308 $\text{Major product obtained in the given reaction is:}$ $\text{CH}_3\text{C}_6\text{H}_4\text{OCH}_2\text{CH}_2\text{CHClCH}_3 \xrightarrow{\text{AlCl}_3} \text{Product}$ 2 213 JEE MCQ NEW $\text{H}_3\text{C}\text{C}_6\text{H}_4\text{OCH}_2\text{CH}\text{CH}_3$, $\text{CH}_3\text{C}_6\text{H}_3\text{O}$... 4 Edit Delete
21307 $\text{The major product in the following reaction is:}$ $\text{CH}_3\text{C} \equiv \text{CH} \xrightarrow{\begin{array}{c} (i) \ \text{DCl} \ (1 \ \text{equiv.}) \\ (ii) \ \text{DI} \end{array}}$ 2 213 JEE MCQ NEW $\text{CH}_3\text{CD(Cl)CHD(I)}$, $\text{CH}_3\text{CD}_2\text{CH(Cl)(I)}$... 4 Edit Delete
21306 $\text{The major product of the following reaction is:}$ $\text{CH}_3\begin{array}{c}\text{NO}_2\end{array}\begin{array}{c}\text{2HBr}\end{array}\rightarrow$ 2 213 JEE MCQ NEW $\begin{array}{c}\text{H}_3\text{C}\end{array}\begin{array}{c}\text{Br}\end{array}\begin{array}{c}\text{NO}_2\end{array}$, $\begin{array}{c}\text{Br}\end{array}\begin{array}{c}\text{CH}_3\end{array}\begin{array}{c}\text{Br}\end{array}\begin{array}{c}\text{NO}_2\end{array}$... 2 Edit Delete
21305 $\text{The major product obtained from the following reaction is -}$ $\text{O}_2\text{N} - \text{C}_6\text{H}_4 - \equiv - \text{C} - \text{C}_6\text{H}_4 - \text{OCH}_3 \xrightarrow{\text{Hg}^{2+}/\text{H}^+} \text{H}_2\text{O}$ 2 213 JEE MCQ NEW $\text{O}_2\text{N} - \text{C}_6\text{H}_4 - \text{C} - \text{C}_6\text{H}_4 - \text{OH}$, $\text{O}_2\text{N} - \text{C}_6\text{H}_4 - \text{C} - \text{C}_6\text{H}_4 - \text{OCH}_3$... 2 Edit Delete
21304 14 2 213 JEE MCQ NEW 1, 2... 1 Edit Delete
21303 $\text{Which one of the following compounds exhibits geometrical isomerism?}$ 2 213 JEE MCQ NEW $\text{CH}_2=\text{CHCl}$, $\text{CHCl}=\text{CHCH}_3$... 2 Edit Delete
21302 $\text{The major product [R] in the following sequence of reactions is:}$ $\text{HC} \equiv \text{CH} \xrightarrow{(i) \text{LiNH}_2/\text{ether}} \xrightarrow{(ii) \text{H}_3\text{C} \text{CHBr} \text{(CH}_3\text{)}_2\text{CH}} \xrightarrow{(i) \text{HgSO}_4/\text{H}_2\text{SO}_4} \xrightarrow{(ii) \text{NaBH}_4} \xrightarrow{\text{Conc. } \text{H}_2\text{SO}_4, \Delta} \text{[R]}$ 2 213 JEE MCQ NEW $\text{H}_2\text{C} = \text{CH}_2 - \text{CH}_3 \text{CH(CH}_3\text{)}_2$, $\text{H}_3\text{C} - \text{C} \equiv \text{CH} - \text{CH}_3 \text{CH}_2\text{CH}$... 3 Edit Delete
21301 $\text{Identify products A and B in the given reaction:}$ $\text{dil. KMnO}_4$ $273 \text{ K}$ $\rightarrow$ $\text{CrO}_3$ $\rightarrow$ 2 213 JEE MCQ NEW $\text{A:} \ \text{CH}_3\text{CH(OH)CH}_2\text{CH}_2\text{OH} \quad \text{B:} \ \text{CH}_3\text{CH}_2\text{CH}_2\text{CHO}$, $\text{A:} \ \text{CH}_3\text{CH(OH)CH}_2\text{CH}_2\text{OH} \quad \text{B:} \ \text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}$... 2 Edit Delete
21300 $\text{The correct reagent that is used for the following reaction is:}$ $\text{CH}_3 \ \text{CH}_2 \ \text{CH}_3 \ \xrightarrow{?} \ \text{CH}_3 \ \text{CH}_2 \ \text{CHO}$ 2 213 JEE MCQ NEW $\text{Manganese acetate}$, $\text{Copper at high temperature and pressure}$... 3 Edit Delete
21299 $\text{The major product among the following reaction is:}$ $\text{(1) Zn/HCl}$ \rightarrow$ $\text{(2) Cr}_2\text{O}_3, \ 773 \ \text{K}$ $10-20 \ \text{atm}$ 2 213 JEE MCQ NEW $\text{CH}_2\text{CH}_3$, $\text{CH}_2\text{CH}_2\text{CH}_3$... 1 Edit Delete
21298 $\text{Consider the following reaction,}$ $\text{CH}_3\text{CH} = \text{C(CH}_3)_2 + \text{HI} \rightarrow \text{Major product}$ $\text{The major product in the above reaction is:}$ 2 213 JEE MCQ NEW $\text{H}_3\text{CCH}_2\text{CICH}_2\text{CH}_3$, $\text{H}_3\text{CCH}_2\text{C(CH}_3)\text{CH}_3\text{I}$... 3 Edit Delete
21297 $\text{The product A in the following reaction is:}$ $\begin{array}{c} \text{CH}_2\text{CH}_3 \\ \text{CN} \end{array} \xrightarrow{\text{Br}_2 \, \text{UV light}} \text{A (Major product) monobrominated}$ 2 213 JEE MCQ NEW $\begin{array}{c} \text{CH}_2\text{CH}_3 \\ \text{CN} \\ \text{Br} \end{array}$, $\begin{array}{c} \text{CH}_2\text{CH}_3 \\ \text{CN} \\ \text{Br} \end{array}$... 3 Edit Delete
21296 $\text{Given the following reaction:}$ $\text{HC} = \text{CHBr}$ $\begin{array}{l} \text{CH}_3 \\ \end{array}$ $\begin{array}{l} 1. \text{NaN}_2 \\ 2. \text{Red hot iron tube, 873 K} \end{array} \rightarrow (\text{A}) \text{(major product)}$ $\text{The major product A is:}$ 2 213 JEE MCQ NEW $\text{CH}_3\text{CH}_2\text{CH}_2\text{NH}_2$, $\begin{array}{c} \text{H} \\ \text{HC} = \text{C} - \text{NH}_2 \\ \text{CH}_3 \end{array}$... 4 Edit Delete
21295 $\text{The correct sequence of reagents used in the preparation of 4-Bromo-2-nitro-1-ethyl benzene from benzene is:}$ 2 213 JEE MCQ NEW $\text{HNO}_3/\text{H}_2\text{SO}_4, \text{Br}_2/\text{AlCl}_3, \text{CH}_3\text{COCl}/\text{AlCl}_3, \text{Zn} - \text{Hg}/\text{HCl}$, $\text{Br}_2/\text{AlBr}_3, \text{CH}_3\text{COCl}/\text{AlCl}_3, \text{HNO}_3/\text{H}_2\text{SO}_4, \text{Zn}/\text{HCl}$... 4 Edit Delete
21294 $\text{The major product of the following reaction is:}$ $\text{(image of reaction with } \text{NO}_2 \text{ and } \text{H}_2\text{SO}_4\text{)}$ 2 213 JEE MCQ NEW $\text{(image of option 1)}$, $\text{(image of option 2)}$... 3 Edit Delete
21293 $\text{Identify A in the given chemical reaction:}$ $\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{CH}_3 \xrightarrow{\text{Mo}_2\text{O}_3, \ 773 \text{ K}, \ 10-20 \text{ atm}} \text{A (major product)}$ 2 213 JEE MCQ NEW $\text{Benzene}$, $\text{Cyclohexane}$... 4 Edit Delete
21292 $\text{Which of the following compounds are aromatic?}$ 2 213 JEE MCQ NEW $\text{Only A and B}$, $\text{Only A and C}$... 2 Edit Delete
21291 $\text{Statement I:}$ $\text{Alkene has weak } \pi \text{ bond, therefore less stable than alkane.}$ $\text{Statement II:}$ $\text{Weak } \pi \text{ bond is less strong than the carbon-carbon sigma bond.}$ 2 213 JEE MCQ NEW $\text{Statement I is correct; Statement II is correct}$, $\text{Statement I is correct; Statement II is incorrect}$... 1 Edit Delete
21290 $\text{Which of the following will give a positive Lassaigne's test?}$ 2 212 JEE MCQ NEW $\text{NH}_4\text{OH}$, $\text{NH}_4\text{Cl}$... 4 Edit Delete
21289 $\text{Identify the number of compounds, among the following, that have the same degree of unsaturation:}$ $\text{(A) } \text{CH}_3 - \text{CH} = \text{CH} - \text{C} \equiv \text{N}$ $\text{(B) } \text{CH}_3 - \text{N} = \text{CH} - \text{C} \equiv \text{CH}$ $\text{(C) } \text{CH} \equiv \text{C} - \text{NH} - \text{CH} = \text{CH}_2$ $\text{(D) } \text{CH}_2 = \text{CH} - \text{CH}_2 - \text{C} \equiv \text{N}$ 2 212 JEE MCQ NEW $2$, $3$... 4 Edit Delete
21288 $\text{The IUPAC name of the following compound is:}$ $\begin{array}{c} \text{COOH} \\ \text{COOCH}_3 \end{array}$ $\text{CH}_3 - \text{CH} - \text{CH}_2 - \text{CH}_2 - \text{CH} - \text{CH}_3$ 2 212 JEE MCQ NEW $\text{2-Carboxy-5-methoxycarbonylhexane.}$, $\text{Methyl-6-carboxy-2,5-dimethylhexanoate.}$... 4 Edit Delete
21287 $\text{In the Carius method for estimation of halogens, 180 mg of an organic compound produced 143.5 mg of AgCl. The percentage composition of chlorine in the compound is:}$ $\text{[Given: molar mass in g mol}^{-1} \text{ of Ag and Cl are 108, 35.5 respectively]}$ 2 212 JEE MCQ NEW $27.91\%$, $46.32\%$... 3 Edit Delete
21286 $\text{Which one of the carbocations from the following is most stable?}$ 2 212 JEE MCQ NEW $\overset{+}{\text{CH}_2} \text{CH} = \text{CH} - \text{O} - \text{CH}_3$, $\overset{+}{\text{CH}_2} \text{CH} = \text{CH} - \overset{\cdot}{\text{O}} - \text{CH}_3$... 2 Edit Delete
21285 70 2 212 JEE MCQ NEW 1, 2... 1 Edit Delete
21284 $\text{Consider the given two statements:}$ $\text{Statement I:}$ \text{Methylcyclopentane and hex-3-ene are isomeric compounds.}$ $\text{Statement II:}$ \text{1-Aminopentane and N-ethylpropylamine are functional isomers.}$ $\text{In the light of the above statements, choose the correct answer from the options given below:}$ 2 212 JEE MCQ NEW $\text{Both Statement I and Statement II are false.}$, $\text{Both Statement I and Statement II are true.}$... 2 Edit Delete
21283 $\text{The correct arrangement of the following carbocations in decreasing order of their stability is:}$ 2 212 JEE MCQ NEW $\text{A} > \text{B} > \text{C} > \text{D}$, $\text{B} > \text{C} > \text{A} > \text{D}$... 4 Edit Delete
21282 $\text{In the given structure, the number of sp and sp}^2 \text{ hybridized carbon atoms present, respectively, are:}$ 2 212 JEE MCQ NEW $3 \text{ and } 6$, $3 \text{ and } 5$... 2 Edit Delete
21281 $\text{Identify correct statement(s):}$ $\begin{array}{ll} (A) & -\text{OCH}_3 \text{ and } -\text{NHCOCH}_3 \text{ are activating groups.} \\ (B) & -\text{CN and } -\text{OH are meta-directing groups.} \\ (C) & -\text{CN and } -\text{SO}_3\text{H are meta-directing groups.} \\ (D) & \text{Activating groups act as ortho- and para-directing groups.} \\ (E) & \text{Halides are activating groups.} \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 212 JEE MCQ NEW $(A), (C) \text{ and } (D) \text{ only}$, $(A), (B) \text{ and } (E) \text{ only}$... 1 Edit Delete
21280 $\text{The given compound is classified as:}$ 2 212 JEE MCQ NEW $\text{Alicyclic}$, $\text{Aromatic}$... 1 Edit Delete
21279 $\text{The correct structure for the IUPAC name 3-Methylpent-2-enal is:}$ 2 212 JEE MCQ NEW $\text{Structure 1}$, $\text{Structure 2}$... 2 Edit Delete
21278 $\text{Arrange the following in increasing order of their stability:}$ $\begin{array}{ll} \text{a.} & \overset{\oplus}{\text{CH}_2} \text{--- CH = C --- H} \\ \text{b.} & \text{CH}_2 = \text{CH} \overset{\oplus}{\overset{\text{O}}{\underset{\ominus}{\text{C}}}} \text{--- H} \\ \text{c.} & \text{CH}_2 = \text{CH} \overset{\ominus}{\overset{\text{O}}{\underset{\oplus}{\text{C}}}} \text{--- H} \\ \text{d.} & \overset{\ominus}{\text{CH}_2} \text{--- CH = C --- H} \overset{\oplus}{\text{O}} \end{array}$ 2 212 JEE MCQ NEW $(a) < (b) < (c) < (d)$, $(a) < (d) < (c) < (b)$... 4 Edit Delete
21277 $\text{How many of the following compounds are optically active?}$ $\text{(I) CH}_3 - \text{CH}_2 - \text{CH}_2 - \text{Cl}$ $\text{(II) CH}_3 - \text{CH}_2 - \text{CH}_2 - \text{OH}$ $\text{(III)}$ \begin{array}{c} \text{CH}_3 - \text{CH} - \text{CH}_2 - \text{CH}_2 - \text{Cl} \\ \quad \vert \\ \text{CH}_3 \end{array} $ $\text{(IV)}$ \begin{array}{c} \text{CH}_3 \\ \vert \\ \text{H} - \text{C} - \text{OH} \\ \vert \\ \text{H} - \text{C} - \text{OH} \\ \vert \\ \text{CH}_3 \end{array} $ $\text{(V)}$ \begin{array}{c} \text{CH}_3 - \text{C} - \text{C} - \text{C} - \text{CH}_3 \\ \quad \vert \quad \vert \quad \vert \\ \text{OH} \quad \text{OH} \quad \text{OH} \end{array} $ 2 212 JEE MCQ NEW $\text{Zero}$, $\text{(I), (II), (III)}$... 1 Edit Delete
21276 $\text{Assertion (A): Kjeldahl method is not used for pyridine.}$ $\text{Reason (R): Nitrogen of pyridine does not change to ammonium sulphate under these conditions.}$ 2 212 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
21275 $\text{What is the correct order of acidic strength for the following acids?}$ $\text{HCOOH, CH}_3\text{COOH, CH}_3\text{CH}_2\text{COOH,}$ $\text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}$ 2 212 JEE MCQ NEW $\text{HCOOH} < \text{CH}_3\text{COOH} < \text{CH}_3\text{CH}_2\text{COOH} < \text{CH}_3\text{CH}_2\text{CH}_2\text{COOH}$, $\text{HCOOH} > \text{CH}_3\text{CH}_2\text{CH}_2\text{COOH} > \text{CH}_3\text{COOH} > \text{CH}_3\text{CH}_2\text{COOH}$... 3 Edit Delete
21274 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{IUPAC name of the Compound is 4-chloro-1, 3-dinitrobenzene.}$ $\text{Statement II:}$ \text{IUPAC name of the Compound is 2-methylaniline.}$ 2 212 JEE MCQ NEW $\text{Statement I is false but Statement II is true.}$, $\text{Both Statement I and Statement II are false.}$... 1 Edit Delete
21273 $\text{The basic strength of the following anions, ordered from most to least, is:}$ $\text{OH}^-, \text{HCOO}^-, \text{CH}_3\text{COO}^-, \overline{\text{OR}}$ $(I) \quad (II) \quad (III) \quad (IV)$ 2 212 JEE MCQ NEW $II > III > I > IV$, $IV > I > III > II$... 2 Edit Delete
21272 $\text{Which of the following is/are used as adsorbent in adsorption chromatography?}$ 2 212 JEE MCQ NEW $\text{Silica gel}$, $\text{Alumina}$... 4 Edit Delete
21271 $\text{What is the IUPAC name of catechol?}$ 2 212 JEE MCQ NEW $\text{Benzene, 1, 2-diol}$, $\text{Benzene, 1, 3-diol}$... 1 Edit Delete
21270 $\text{The IUPAC name of the following compound is:}$ 2 212 JEE MCQ NEW $\text{3-Formylhept-6-enoic acid}$, $\text{3-Aldohept-7-enoic acid}$... 1 Edit Delete
21269 $\text{The ratio of } R_f \text{ value for P and R is:}$ 2 212 JEE MCQ NEW $0.50$, $0.80$... 1 Edit Delete
21268 $\text{Which of the following options represents the correct metamer of the given compound?}$ $\text{[Image of compound]}$ 2 212 JEE MCQ NEW $\text{[Image of option 1]}$, $\text{[Image of option 2]}$... 3 Edit Delete
21267 $\text{Which of the following anions forms a pale yellow precipitate when reacted with aqueous } \text{AgNO}_3, \text{ and the precipitate is partially soluble in aqueous } \text{NH}_4\text{OH solution?}$ 2 212 JEE MCQ NEW $\text{I}^-$, $\text{Cl}^-$... 3 Edit Delete
21266 $\text{The correct match among the following is:}$ $1.\ \text{Hexane-2-one and Hexane-3-one} \quad \text{Position isomers.}$ $2.\ \text{Pentane-3-one and Pentane-2-one} \quad \text{Functional isomers.}$ $3.\ \text{2-Pentene and 1-Pentene} \quad \text{Metamers.}$ $4.\ \text{Pentanoic acid and Hexanoic acid} \quad \text{Functional isomers.}$ 2 212 JEE MCQ NEW $\text{Hexane-2-one and Hexane-3-one: Position isomers.}$, $\text{Pentane-3-one and Pentane-2-one: Functional isomers.}$... 1 Edit Delete
21265 $\text{The correct stability order of the resonating structure of the given compound is:}$ $\begin{array}{c} \text{O} \\ \text{||} \\ \text{H} - \text{C} = \text{C} - \text{C} = \text{C} - \text{NH}_2 \end{array}$ 2 212 JEE MCQ NEW $\text{A} > \text{B} > \text{C}$, $\text{B} > \text{A} > \text{C}$... 1 Edit Delete
21264 $\text{Following types of compounds (as I, II) are studied in terms of isomerism in:}$ $\begin{array}{|c|} \hline \text{(I)} \\ \text{CH}_3\text{CH} = \text{CHCH}_3 \\ \hline \text{(II)} \\ \begin{array}{c} \text{H}_3\text{C} - \text{C} - \text{OH} \\ | \\ \text{H} - \text{C} - \text{CH}_3 \\ | \\ \text{H}_2 \\ \end{array} \\ \hline \end{array}$ 2 212 JEE MCQ NEW $\text{Chain isomerism}$, $\text{Position isomerism}$... 4 Edit Delete
21263 $\text{Given the following benzyl/allyl system:}$ $\text{R} - \text{C} = \text{CH}_2 \quad \text{or} \quad \begin{array}{c} \text{R} \\ \bigcirc \\ \end{array}$ $\text{(R is alkyl group)}$ $\text{What is the correct decreasing order of the inductive effect?}$ 2 212 JEE MCQ NEW $(\text{CH}_3)_3\text{C}- > (\text{CH}_3)_2\text{CH}- > \text{CH}_3\text{CH}_2-$, $\text{CH}_3\text{CH}_2- > (\text{CH}_3)_2\text{CH}- > (\text{CH}_3)_3\text{C}-$... 1 Edit Delete
21262 $\text{Choose the compound with incorrect IUPAC nomenclature among the following.}$ 2 212 JEE MCQ NEW $\text{Ethylbutanoate}$, $\text{3-Methylbutanal}$... 4 Edit Delete
21261 $\text{In a given organic compound of molar mass}$ $108 \text{ g mol}^{-1}, \text{ C, H, and N atoms are present in a } 9:1:3.5 \text{ by weight ratio.}$ $\text{The molecular formula of the organic compound is:}$ 2 212 JEE MCQ NEW $\text{C}_6\text{H}_8\text{N}_2$, $\text{C}_7\text{H}_{10}\text{N}$... 1 Edit Delete
21260 45 2 212 JEE MCQ NEW 1, 2... 1 Edit Delete
21259 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{In the Lassaigne test, an organic compound with both N and S, responds to the test of SCN}^-.$ $\text{Statement II:}$ \text{In the Lassaigne test, if Na is taken in excess, it destroys SCN}^- \text{ and forms Na}_2\text{S and NaCN.}$ 2 212 JEE MCQ NEW $\text{Statement I is correct and Statement II is incorrect.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 3 Edit Delete
21258 43 2 212 JEE MCQ NEW 1, 2... 1 Edit Delete
21257 $\text{The compound that does not have } \text{sp}^2 \text{ hybridized carbon among the following is:}$ $1. \text{ Acetone}$ $2. \text{ Acetic acid}$ $3. \text{ Acetonitrile}$ $4. \text{ Acetamide}$ 2 212 JEE MCQ NEW $\text{Acetone}$, $\text{Acetic acid}$... 3 Edit Delete
21256 $\text{The IUPAC name of the following compound is:}$ 2 212 JEE MCQ NEW $3, 3\text{-Dimethyl-1-hydroxycyclohexane}$, $1,1\text{-Dimethyl-3-hydroxycyclohexane}$... 3 Edit Delete
21255 $\text{The ammonia evolved from the treatment of } 0.30 \text{ g of an organic compound for the estimation of nitrogen was passed in } 100 \text{ mL of } 0.1 \text{ M sulphuric acid. The excess acid required } 20 \text{ mL of } 0.5 \text{ M sodium hydroxide solution for complete neutralization. The percentage of nitrogen in the organic compound is:}$ 2 212 JEE MCQ NEW $46.6 \%$, $50.4 \%$... 1 Edit Delete
21254 $\text{The decreasing order of nucleophilicity among the given nucleophiles is:}$ $\begin{array}{cc} \text{(A)} & \text{O} \\ & || \\ & \text{CH}_3\text{C} - \text{O}^- \\ \text{(B)} & \text{CH}_3\text{O}^- \\ \text{(C)} & \text{CN}^- \\ \text{(D)} & \text{O} \\ & || \\ & \text{H}_3\text{C} - \text{S} - \text{O}^- \\ & || \\ & \text{O} \end{array}$ 2 212 JEE MCQ NEW $(\text{C}), (\text{B}), (\text{A}), (\text{D})$, $(\text{B}), (\text{C}), (\text{A}), (\text{D})$... 2 Edit Delete
21253 $\text{What properties do free radicals exhibit due to their unpaired electron?}$ 2 212 JEE MCQ NEW $\text{Cations}$, $\text{Anions}$... 4 Edit Delete
21252 $\text{The increasing order of stability of the following free radicals is:}$ 2 212 JEE MCQ NEW $(\text{CH}_3)_2\dot{\text{C}}\text{H} < (\text{CH}_3)_3\dot{\text{C}} < (\text{C}_6\text{H}_5)_2\dot{\text{C}}\text{H} < (\text{C}_6\text{H}_5)_3\dot{\text{C}}$, $(\text{C}_6\text{H}_5)_3\dot{\text{C}} < (\text{C}_6\text{H}_5)_2\dot{\text{C}}\text{H} < (\text{CH}_3)_3\dot{\text{C}} < (\text{CH}_3)_2\dot{\text{C}}\text{H}$... 1 Edit Delete
21251 $\text{The correct decreasing order of priority for the functional groups of}$ $\text{organic compounds in the IUPAC system of nomenclature is:}$ 2 212 JEE MCQ NEW $-\text{SO}_3\text{H}, -\text{COOH}, -\text{CONH}_2, -\text{CHO}$, $-\text{CHO}, -\text{COOH}, -\text{SO}_3\text{H}, -\text{CONH}_2$... 4 Edit Delete
21250 $\text{The correct order of decreasing stability of the following is:}$ $(\text{CH}_3)_3\text{C}^-, \text{CCl}_3, (\text{CH}_3)_2\text{CH}^-, \text{C}_6\text{H}_5 - \text{CH}_2^-$ 2 212 JEE MCQ NEW $\text{-CCl}_3 > \text{C}_6\text{H}_5 - \text{CH}_2^- > (\text{CH}_3)_2\text{CH}^- > (\text{CH}_3)_3\text{C}^-$, $\text{C}_6\text{H}_5 - \text{CH}_2^- > \text{-CCl}_3 > (\text{CH}_3)_2\text{CH}^- > (\text{CH}_3)_3\text{C}^-$... 1 Edit Delete
21249 $\text{Out of the following, the alkene that exhibits optical isomerism is:}$ $1. \text{ 2-Methyl-2-pentene}$ $2. \text{ 3-Methyl-2-pentene}$ $3. \text{ 4-Methyl-pentene}$ $4. \text{ 3-Methyl-1-pentene}$ 2 212 JEE MCQ NEW $\text{2-Methyl-2-pentene}$, $\text{3-Methyl-2-pentene}$... 4 Edit Delete
21248 $29.5 \text{ mg of an organic compound containing nitrogen was digested according to Kjeldahl's method and the evolved ammonia were absorbed in } 20 \text{ mL of } 0.1 \text{ M HCl solution.}$ $\text{The excess of the acid required } 15 \text{ mL of } 0.1 \text{ M NaOH solution for complete neutralization.}$ $\text{The percentage of nitrogen in the compound is:}$ 2 212 JEE MCQ NEW $29.5$, $23.7$... 2 Edit Delete
21247 $\text{Given below are four statements about thiol anion (RS}^-\text{) and alkoxy anion (RO}^-\text{).}$ $\text{Which of the following statements is correct?}$ 2 212 JEE MCQ NEW $\text{RS}^- \text{ is less basic but more nucleophilic than RO}^-$, $\text{RS}^- \text{ is more basic and more nucleophilic than RO}^-$... 1 Edit Delete
21246 $\text{The order of stability of the following carbocations is:}$ $\begin{array}{ccc} \text{H}_2\text{C} = \text{C}^+ - \text{CH}_2 & \text{H}_3\text{C} - \overset{+}{\text{CH}} - \text{CH}_2 & \overset{+}{\text{CH}_2} \text{(benzene ring)} \\ \text{(I)} & \text{(II)} & \text{(III)} \end{array}$ 2 212 JEE MCQ NEW $\text{I} > \text{II} > \text{III}$, $\text{III} > \text{I} > \text{II}$... 2 Edit Delete
21245 $\text{For the estimation of nitrogen, } 1.4 \text{ g of an organic compound was digested by the Kjeldahl method and the evolved ammonia was absorbed in } 60 \text{ mL of M/10 sulphuric acid. The unreacted acid required } 20 \text{ mL of M/10 sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is:}$ 2 212 JEE MCQ NEW $10\%$, $3\%$... 1 Edit Delete
21244 $\text{In the Carius method for estimation of halogens, 250 mg of an}$ $\text{organic compound gave 141 mg of AgBr. The percentage of bromine}$ $\text{in the compound is:}$ $\text{(Atomic masses: Ag = 108, Br = 80)}$ 2 212 JEE MCQ NEW $24\%$, $36\%$... 1 Edit Delete
21243 $\text{The distillation technique most suited for separating glycerol from spent-lye in the soap industry is:}$ $1. \text{ Steam distillation}$ $2. \text{ Distillation under reduced pressure}$ $3. \text{ Fractional distillation}$ $4. \text{ Differential extraction}$ 2 212 JEE MCQ NEW $\text{Steam distillation}$, $\text{Distillation under reduced pressure}$... 2 Edit Delete
21242 $\text{The IUPAC name for the following compound is:}$ 2 212 JEE MCQ NEW $3,5\text{-Dimethyl-4-propylhept-1-en-6-yne}$, $3\text{-Methyl-4-(3-methylprop-1-enyl)-1-heptyne}$... 1 Edit Delete
21241 $\text{An organic compound 'A' is oxidized with } \text{Na}_2\text{O}_2 \text{ followed by boiling with } \text{HNO}_3. \text{ The resultant solution is then treated with ammonium molybdate to yield a yellow precipitate. Based on the above observation, the element present in the given compound is:}$ 2 212 JEE MCQ NEW $\text{Fluorine}$, $\text{Phosphorus}$... 2 Edit Delete
21240 $\text{Which of the following is the principle behind column chromatography?}$ 2 212 JEE MCQ NEW $\text{Gravitational force.}$, $\text{Capillary action.}$... 3 Edit Delete
21239 $\text{The increasing order of nucleophilicity of the following nucleophiles is:}$ $\begin{array}{ll} (a) & \text{CH}_3\text{CO}_2^- \\ (b) & \text{H}_2\text{O} \\ (c) & \text{CH}_3\text{SO}_3^- \\ (d) & \text{OH}^- \end{array}$ 2 212 JEE MCQ NEW $(b) < (c) < (a) < (d)$, $(b) < (c) < (d) < (a)$... 1 Edit Delete
21238 $\text{In chromatography, which of the following statements is incorrect for } R_f?$ $1. \ R_f \ \text{value depends on the type of chromatography.}$ $2. \ \text{Higher } R_f \ \text{value means higher adsorption.}$ $3. \ R_f \ \text{value is dependent on the mobile phase.}$ $4. \ \text{The value of } R_f \ \text{can never be more than one.}$ 2 212 JEE MCQ NEW $R_f \ \text{value depends on the type of chromatography.}$, $\text{Higher } R_f \ \text{value means higher adsorption.}$... 2 Edit Delete
21237 $\text{The correct IUPAC name of the following compound is:}$ $\begin{array}{c} \text{NO}_2 \\ \text{Cl} \\ \text{CH}_3 \end{array}$ 2 212 JEE MCQ NEW $5\text{-Chloro-4-methyl-1-nitrobenzene}$, $2\text{-Chloro-1-methyl-4-nitrobenzene}$... 2 Edit Delete
21236 $\text{The IUPAC name of the following compound is -}$ $\begin{array}{c} \text{H}_3\text{C} \quad \text{OH} \\ | \\ \text{H}_3\text{C} - \text{C} - \text{C} - \text{C} - \text{C} \\ | \\ \text{H} \quad \text{H}_2 \quad \text{O} \\ | \\ \text{OH} \end{array}$ 2 212 JEE MCQ NEW $4,4\text{-Dimethyl-3-hydroxybutanoic acid}$, $2\text{-Methyl-3-hydroxypentan-5-oic acid}$... 4 Edit Delete
21235 $\text{Match the following:}$ $\begin{array}{|c|c|} \hline \text{Test/Method} & \text{Reagent} \\ \hline (i) \text{ Lucas Test} & (a) \text{C}_6\text{H}_5\text{SO}_2\text{Cl} / \text{aq. KOH} \\ (ii) \text{ Dumas method} & (b) \text{HNO}_3 / \text{AgNO}_3 \\ (iii) \text{ Kjeldahl's method} & (c) \text{CuO} / \text{CO}_2 \\ (iv) \text{ Hinsberg Test} & (d) \text{Conc. HCl and ZnCl}_2 \\ & (e) \text{H}_2\text{SO}_4 \\ \hline \end{array}$ 2 212 JEE MCQ NEW $(i)-(d), (ii)-(c), (iii)-(e), (iv)-(a)$, $(i)-(b), (ii)-(d), (iii)-(e), (iv)-(a)$... 1 Edit Delete
21234 $\text{The IUPAC name of the following compound is-}$ 2 212 JEE MCQ NEW $\text{3-Amino-4-hydroxymethyl-5-nitrobenzaldehyde}$, $\text{2-Nitro-4-hydroxymethyl-5-amino benzaldehyde}$... 4 Edit Delete
21233 $\text{In an estimation of bromine by the Carius method, } 1.6 \text{ g of an organic compound gave } 1.88 \text{ g of AgBr. The mass percentage of bromine in the compound is:}$ $[\text{Atomic mass, Ag}=108, \text{ Br} = 80 \text{ g mol}^{-1}]$ 2 212 JEE MCQ NEW $50 \%$, $55.5 \%$... 1 Edit Delete
21232 $\text{The IUPAC name of the following compound is -}$ 2 212 JEE MCQ NEW $3\text{-Bromo-5-methylcyclopentanoic acid}$, $4\text{-Bromo-2-methylcyclopentanecarboxylic acid}$... 2 Edit Delete
21231 $\text{The Kjeldahl method of Nitrogen estimation fails for which of the following reaction products?}$ $\begin{array}{cc} \text{1.} & \text{2.} \\ \text{NO}_2 & \text{CN} \\ \text{Sn/HCl} & \text{LiAlH}_4 \\ \text{3.} & \text{4.} \\ \text{CH}_2\text{CN} & \text{NH}_2 \\ \text{(i) SnCl}_4 + \text{HCl} & \text{NaNO}_2, \text{HCl} \\ \text{(ii) H}_2\text{O} & \end{array}$ 2 212 JEE MCQ NEW $(a), (c) \text{ and } (d)$, $(b) \text{ and } (c)$... 4 Edit Delete
21230 $\text{Glycerol is separated in soap industries by:}$ $1.\ \text{Steam Distillation}$ $2.\ \text{Distillation under reduced pressure}$ $3.\ \text{Fractional distillation}$ $4.\ \text{Differential extraction}$ 2 212 JEE MCQ NEW $\text{Steam Distillation}$, $\text{Distillation under reduced pressure}$... 2 Edit Delete
21229 $\text{The compound that possesses the most acidic hydrogen atom, among the following, is:}$ 2 212 JEE MCQ NEW $\text{H}_3\text{C} - \text{C} \equiv \text{C} - \text{H}$, $\text{MeO} \begin{array}{c} \text{O} \\ | \\ \text{C} \\ | \\ \text{H} \\ | \\ \text{C} \\ | \\ \text{O} \\ | \\ \text{OMe} \end{array} \text{O}$... 2 Edit Delete
21228 $\text{In the Carius method of estimation of halogen, } 0.172 \text{g of an organic compound showed the presence of } 0.08 \text{g of bromine. The correct structure of the compound among the following is:}$ 2 212 JEE MCQ NEW $\begin{array}{c} \text{NH}_2 \\ \text{Br} \\ \text{(benzene ring)} \end{array}$, $\text{H}_3\text{C} - \text{CH}_2 - \text{Br}$... 1 Edit Delete
21227 $\text{The IUPAC name for the following compound is:}$ $\text{(Image of compound with CHO and COOH groups)}$ 2 212 JEE MCQ NEW $2,5\text{-Dimethyl-6-carboxy-hex-3-enal}$, $6\text{-Formyl-2-methyl-hex-3-enoic acid}$... 4 Edit Delete
21226 $\text{The false statement among the following is:}$ 2 212 JEE MCQ NEW $\text{Carius tube is used in the estimation of sulphur in an organic compound}$, $\text{Carius method is used for the estimation of nitrogen in an organic compound}$... 2 Edit Delete
21225 $\text{Statement I: A mixture of chloroform and aniline can be separated by simple distillation.}$ $\text{Statement II: When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point.}$ 2 212 JEE MCQ NEW $\text{Statement I is false but Statement II is true.}$, $\text{Both Statement I and Statement II are false.}$... 4 Edit Delete
21224 $\text{Which of the following compounds is added to the sodium extract before the addition of silver nitrate for testing of halogens?}$ 2 212 JEE MCQ NEW $\text{Nitric acid}$, $\text{Ammonia}$... 1 Edit Delete
21223 $\text{Use the provided information in the following paper chromatogram.}$ $\text{Figure: Paper chromatography for compounds A and B.}$ $\text{The } R_f \text{ value of A is } Y \times 10^{-1}. \text{ The value of } Y \text{ is:}$ 2 212 JEE MCQ NEW $2$, $3$... 3 Edit Delete
21222 $\text{If } 0.450 \text{ grams of an organic compound containing Carbon, Hydrogen }$ $\text{and Oxygen on complete combustion gives } 0.735 \text{ grams CO}_2 \text{ and } 0.45$ $\text{grams of water, then the mass \% of oxygen in the compound is:}$ $\text{(Report your answer to the nearest integer)}$ 2 212 JEE MCQ NEW $31$, $49$... 3 Edit Delete
21221 $\text{In thin layer chromatography, which of the following is not used to visualise the separated layer?}$ 2 212 JEE MCQ NEW $\text{Visualisation agent in the mobile phase}$, $\text{Spraying of suitable reagent}$... 1 Edit Delete
21220 $0.5 \text{ gram of an organic compound gives } 0.4 \text{ gram of dry AgBr ppt.}$ $\text{The percentage of Br in the given organic compound is:}$ $[\text{At. Wt. of Ag}=108, \text{At. Wt. of Br}=80]$ 2 212 JEE MCQ NEW 45 \%, 34 \%... 2 Edit Delete
21219 $\text{The violet coloured complex formed in the Lassaigne's test is:}$ 2 212 JEE MCQ NEW $\text{Na}_4[\text{Fe(CN)}_5\text{NOS}]$, $\text{Na}_2[\text{Fe(CN)}_5\text{NO}]$... 1 Edit Delete
21218 $\text{In Duma's method of estimation of nitrogen, } 0.2 \text{ gram of an organic compound gives } 22.4 \text{ ml of nitrogen gas at STP. Percentage of nitrogen in the organic compound is:}$ 2 212 JEE MCQ NEW $20\ \%$, $12\ \%$... 4 Edit Delete
21217 $\text{The order of stability of given carbocations is:}$ 2 212 JEE MCQ NEW $\text{A > B > C}$, $\text{C > B > A}$... 3 Edit Delete
21216 $120 \text{ gram of an organic compound on combustion analysis gives } 330 \text{ gram of carbon dioxide and } 270 \text{ gram of water. }$ $\% \text{ by mass of C and H in an organic compound is:}$ 2 212 JEE MCQ NEW $50\% \text{ C and } 50\% \text{ H}$, $60\% \text{ C and } 40\% \text{ H}$... 4 Edit Delete
21215 $\text{Aluminium chloride exists as dimer, } \text{Al}_2\text{Cl}_6 \text{ in the solid state as well as in the solution of non-polar solvents such as benzene. When dissolved in acidified aqueous solution, it gives:}$ 2 211 JEE MCQ NEW $\text{Al}^{3+} + 3\text{Cl}^-$, $[\text{Al}( ext{H}_2\text{O})_6]^{3+} + 3\text{Cl}^-$... 2 Edit Delete
21214 $\text{The structure of diborane (B}_2\text{H}_6\text{) contains:}$ 2 211 JEE MCQ NEW $\text{four 2C-2e}^- \text{ bonds and four 3C-2e}^- \text{ bonds}$, $\text{two 2C-2e}^- \text{ bonds and two 3C-3e}^- \text{ bonds}$... 4 Edit Delete
21213 $\text{Given below are two statements:}$ $\text{Statement - I}$ $\text{Blood acts as a buffer solution, and its pH is maintained as an acidic buffer.}$ $\text{Statement - II}$ $\text{The pH of blood is regulated by the presence of bicarbonate (HCO}_3^-\text{) and carbonic acid (H}_2\text{CO}_3\text{).}$ 2 211 JEE MCQ NEW $\text{Statement I is false but Statement II is true.}$, $\text{Both Statement I and Statement II are false.}$... 3 Edit Delete
21212 $\text{Given below are two statements:}$ $\text{Statement I:}$ $\text{The stability of } +1 \text{ oxidation state increases down the group in Group-13.}$ $\text{Statement II:}$ $\text{The atomic radius of } Ga \text{ is greater than that of } Al.$ 2 211 JEE MCQ NEW $\text{Statement I is incorrect but Statement II is correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 4 Edit Delete
21211 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{Gallium (Ga) has a low melting point, so it is used in thermometers.}$ $\text{Statement II:}$ \text{A substance having a melting point of 253 K can be measured by a Gallium thermometer.}$ 2 211 JEE MCQ NEW $\text{Statement I is false but Statement II is true.}$, $\text{Both Statement I and Statement II are false.}$... 4 Edit Delete
21210 $\text{The correct order of bond strength of}$ $\text{C-C, Si-Si, Ge-Ge, Sn-Sn is:}$ 2 211 JEE MCQ NEW $\text{C-C} > \text{Si-Si} > \text{Ge-Ge} > \text{Sn-Sn}$, $\text{C-C} > \text{Si-Si} > \text{Ge-Ge} \approx \text{Sn-Sn}$... 1 Edit Delete
21209 $\text{Assertion (A): Carbon forms two oxides } \text{CO} \text{ and } \text{CO}_2 \text{ where } \text{CO} \text{ is neutral whereas } \text{CO}_2 \text{ is acidic.}$ $\text{Reason (R): } \text{CO}_2 \text{ will combine with water to give carbonic acid and } \text{CO} \text{ is soluble in water.}$ 2 211 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
21208 $\text{Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behavior is that graphite:}$ 2 211 JEE MCQ NEW $\text{is a non-crystalline substance.}$, $\text{is an allotropic form of diamond.}$... 4 Edit Delete
21207 $\text{In the structure of silicon dioxide:}$ 2 211 JEE MCQ NEW $\text{There are double bonds between silicon and oxygen atoms.}$, $\text{Silicon atom is bonded to two oxygen atoms.}$... 4 Edit Delete
21206 $\text{In view of the signs of } \Delta_r G^\circ \text{ for the following reactions:}$ $\text{PbO}_2 + \text{Pb} \rightarrow 2 \text{PbO}, \Delta_r G^\circ < 0$ $\text{SnO}_2 + \text{Sn} \rightarrow 2 \text{SnO}, \Delta_r G^\circ > 0$ $\text{The oxidation states more characteristic for lead and tin are respectively:}$ 2 211 JEE MCQ NEW $\text{For lead } +2, \text{ for tin } +2$, $\text{For lead } +4, \text{ for tin } +4$... 3 Edit Delete
21205 $\text{The C--C bond length is maximum in:}$ $1.\ \text{C}_{60}$ $2.\ \text{Diamond}$ $3.\ \text{Graphite}$ $4.\ \text{C}_{70}$ 2 211 JEE MCQ NEW $\text{C}_{60}$, $\text{Diamond}$... 2 Edit Delete
21204 $\text{The correct order of catenation is:}$ 2 211 JEE MCQ NEW $\text{C} >> \text{Sn} > \text{Si} \approx \text{Ge}$, $\text{Si} > \text{Sn} > \text{C} > \text{Ge}$... 3 Edit Delete
21203 $\text{The number of pentagons in } \text{C}_{60} \text{ and trigons (triangles) in white phosphorus, respectively, are:}$ 2 211 JEE MCQ NEW $12 \text{ and } 3$, $20 \text{ and } 3$... 4 Edit Delete
21202 $\text{The correct statements among I to III regarding group 13 element oxides are:}$ $\text{(I) Boron trioxide or diboron trioxide is acidic.}$ $\text{(II) Oxides of aluminium and gallium are amphoteric.}$ $\text{(III) Oxides of indium and thallium are basic.}$ 2 211 JEE MCQ NEW $(\text{I}) \text{ and } (\text{II}) \text{ only}$, $(\text{I}) \text{ and } (\text{III}) \text{ only}$... 4 Edit Delete
21201 $\text{Diborane (B}_2\text{H}_6\text{) reacts independently with O}_2 \text{ and H}_2\text{O to produce, respectively:}$ $\text{1. H}_3\text{BO}_3 \text{ and B}_2\text{O}_3}$ $\text{2. B}_2\text{O}_3 \text{ and H}_3\text{BO}_3}$ $\text{3. B}_2\text{O}_3 \text{ and [BH}_4\text{]}^-}$ $\text{4. HBO}_2 \text{ and H}_3\text{BO}_3}$ 2 211 JEE MCQ NEW $\text{H}_3\text{BO}_3 \text{ and B}_2\text{O}_3$, $\text{B}_2\text{O}_3 \text{ and H}_3\text{BO}_3$... 2 Edit Delete
21200 $\text{Among the following, the number of halide(s) which is/are inert to hydrolysis is} \underline{\phantom{a}}.$ 2 211 JEE MCQ NEW $\text{BF}_3$, $\text{SiCl}_4$... 1 Edit Delete
21199 $\text{The correct statement about } \text{B}_2\text{H}_6 \text{ is:}$ 2 211 JEE MCQ NEW $\text{The terminal B--H bonds have less p-character when compared to bridging bonds.}$, $\text{The two B--H--B bonds are not of the same length.}$... 1 Edit Delete
21198 $\text{Among the following statements, the correct set of statements are:}$ $\text{a. } \text{B}_2\text{H}_6 \text{ is Lewis acid.}$ $\text{b. } \text{B}_2\text{H}_6 \text{ has a planar structure.}$ $\text{c. All B-H Bond lengths are equal in } \text{B}_2\text{H}_6.$ $\text{d. In } \text{B}_2\text{H}_6, \text{ four } 3\text{C} - 2\text{e}^- \text{ bonds are present.}$ $\text{e. } \text{B}_2\text{H}_6 \text{ can be prepared by the reaction of } \text{BF}_3 \text{ and } \text{NaBH}_4.$ 2 211 JEE MCQ NEW $\text{a, b, c, d, e}$, $\text{a, e}$... 2 Edit Delete
21197 $\text{Match the redox reactions in List-I with their corresponding type of redox reaction in List-II.}$ $\text{List-I (Redox Reaction)}$ \begin{array}{ll} \text{(A)} & \text{CH}_4 (g) + 2\text{O}_2 (g) \xrightarrow{\Delta} \text{CO}_2 (g) + 2\text{H}_2\text{O} (l) \\ \text{(B)} & 2\text{NaH} \xrightarrow{\Delta} 2\text{Na} (s) + \text{H}_2 (g) \\ \text{(C)} & \text{V}_2\text{O}_5 (s) + 5\text{Ca} \xrightarrow{} 2\text{V} (s) + 5\text{CaO} (s) \\ \text{(D)} & 2\text{H}_2\text{O}_2 (aq) \xrightarrow{} 2\text{H}_2\text{O} (l) + \text{O}_2 (g) \end{array}$ $\text{List-II (Type of Redox Reaction)}$ \begin{array}{ll} \text{(I)} & \text{Disproportionation reaction} \\ \text{(II)} & \text{Combination reaction} \\ \text{(III)} & \text{Decomposition reaction} \\ \text{(IV)} & \text{Displacement reaction} \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 208 JEE MCQ NEW $\text{A-II, B-III, C-IV, D-I}$, $\text{A-II, B-I, C-I, D-IV}$... 1 Edit Delete
21196 $\text{Consider the given standard electrode potentials:}$ $E^0_{\text{Cr}_2\text{O}_7^{2-}/\text{Cr}^{3+}} = 1.33 \text{ V}$ $E^0_{\text{Cl}_2/\text{Cl}^{-}} = 1.36 \text{ V}$ $E^0_{\text{MnO}_4^{-}/\text{Mn}^{2+}} = 1.51 \text{ V}$ $E^0_{\text{Cr}^{3+}/\text{Cr}} = -0.74 \text{ V}$ $\text{The strongest reducing agent is:}$ 2 208 JEE MCQ NEW $\text{Mn}^{2+}$, $\text{Cr}$... 2 Edit Delete
21195 $\text{The species given below that does not show a disproportionation reaction is:}$ 2 208 JEE MCQ NEW $\text{BrO}^- $, $\text{BrO}_4^- $... 2 Edit Delete
21194 $\text{Which of the following cannot act as an oxidising agent?}$ $1. \text{MnO}_4^{-}$ $2. \text{SO}_4^{2-}$ $3. \text{N}_3^{-}$ $4. \text{BrO}_3^{-}$ 2 208 JEE MCQ NEW $\text{MnO}_4^{-}$, $\text{SO}_4^{2-}$... 3 Edit Delete
21193 $\text{Balance the following chemical equation and choose the option with the correct set of values of } x, y, z, \text{ and } p:$ $x\text{Cl}_2 + y\text{OH}^- \rightarrow z\text{Cl}^- + p\text{ClO}^-$ 2 208 JEE MCQ NEW $x = 1, y = 2, z = 2, p = 1$, $x = y = z = p = 1$... 4 Edit Delete
21192 $\text{Among the following, how many metal ions act as oxidising agents?}$ $\text{Sn}^{2+}, \text{Sn}^{4+}, \text{Pb}^{4+}, \text{Pb}^{2+}, \text{Tl}^{+}, \text{Tl}^{3+}$ 2 208 JEE MCQ NEW $2$, $4$... 1 Edit Delete
21191 $\text{What is the oxidation number of Cl in CaOCl}_2 \text{ (bleaching powder)?}$ 2 208 JEE MCQ NEW $\text{Zero, because it contains Cl}_2$, $-1, \text{ because it contains Cl}^-$... 4 Edit Delete
21190 $\text{Which of the following processes is happening at the anode (from the options given below)?}$ 2 208 JEE MCQ NEW $\text{F}_2 + 2e^- \rightarrow 2\text{F}^-$, $\text{H}^+ + \frac{1}{2}\text{O}_2 + 2e^- \rightarrow \text{H}_2\text{O}$... 3 Edit Delete
21189 $\text{Which of the following is a redox reaction?}$ 2 208 JEE MCQ NEW $\text{NaCl} + \text{KNO}_3 \rightarrow \text{NaNO}_3 + \text{KCl}$, $\text{CaC}_2\text{O}_4 + 2\text{HCl} \rightarrow \text{CaCl}_2 + \text{H}_2\text{C}_2\text{O}_4$... 4 Edit Delete
21188 $\text{Standard reduction electrode potentials of three metals A, B and C are } +0.5 \text{ V}, -3.0 \text{ V and } -1.2 \text{ V respectively. The reducing power of these metals are:}$ 2 208 JEE MCQ NEW $\text{B} > \text{C} > \text{A}$, $\text{A} > \text{B} > \text{C}$... 1 Edit Delete
21187 $\text{Which one of the following is an example of a disproportionation reaction?}$ 2 208 JEE MCQ NEW $3\text{MnO}_4^{2-} + 4\text{H}^+ \rightarrow 2\text{MnO}_4^- + \text{MnO}_2 + 2\text{H}_2\text{O}$, $\text{MnO}_4^- + 4\text{H}^+ + 4e^- \rightarrow \text{MnO}_2 + 2\text{H}_2\text{O}$... 1 Edit Delete
21186 $\text{Which of the following can show disproportionation reaction?}$ 2 208 JEE MCQ NEW $\text{MnO}_4^-$, $\text{ClO}_4^-$... 3 Edit Delete
21185 $\text{Given}$ $E^0_{\text{Cr}^{3+}/\text{Cr}} = -0.74 \text{ V}; \ E^0_{\text{MnO}_4^-/\text{Mn}^{2+}} = 1.51 \text{ V}$ $E^0_{\text{Cr}_2\text{O}_7^{2-}/\text{Cr}^{3+}} = 1.33 \text{ V}; \ E^0_{\text{Cl}_2/\text{Cl}^-} = 1.36 \text{ V}$ $\text{Based on the data given above, strongest oxidizing agent will be -}$ 2 208 JEE MCQ NEW $\text{Mn}^{2+}$, $\text{MnO}_4^-$... 2 Edit Delete
21184 $\text{Consider the following reaction:}$ $a\text{Cu} + b\text{HNO}_3 \rightarrow c\text{Cu(NO}_3\text{)}_2 + d\text{NO} + e\text{H}_2\text{O}$ $\text{The values of } a, b, \text{ and } e \text{ in the reaction are, respectively:}$ 2 208 JEE MCQ NEW $3, 8 \text{ and } 4$, $5, 2 \text{ and } 8$... 1 Edit Delete
21183 $\text{Which of the following reactions is an example of a redox reaction?}$ 2 208 JEE MCQ NEW $\text{XeF}_6 + \text{H}_2\text{O} \rightarrow \text{XeOF}_4 + 2\text{HF}$, $\text{XeF}_6 + 2\text{H}_2\text{O} \rightarrow \text{XeO}_2\text{F}_2 + 4\text{HF}$... 3 Edit Delete
21182 $\text{Which of the following is the strongest reducing agent?}$ $\text{[Given: } E^\circ_{\text{Cl}_2/\text{Cl}^-} = 1.36\text{V}; E^\circ_{\text{Cr}^{3+}/\text{Cr}} = -0.74\text{V};}$ $E^\circ_{\text{Cr}_2\text{O}_7^{2-}/\text{Cr}^{3+}} = 1.33\text{V} \text{ and } E^\circ_{\text{MnO}_4^-/\text{Mn}^{2+}} = 1.51\text{V]}$ 2 208 JEE MCQ NEW $\text{Cr}^{3+}$, $\text{Cl}^-$... 3 Edit Delete
21181 $\text{Given that:}$ $E^\Theta_{\text{O}_2/\text{H}_2\text{O}} = +1.23 \text{ V}; \ E^\Theta_{\text{S}_2\text{O}_8^{2-}/\text{SO}_4^{2-}} = 2.05 \text{ V}$ $E^\Theta_{\text{Br}_2/\text{Br}^-} = +1.09 \text{ V}; \ E^\Theta_{\text{Au}^{3+}/\text{Au}} = +1.4 \text{ V}$ $\text{Which of the following is the strongest oxidizing agent?}$ 2 208 JEE MCQ NEW $\text{S}_2\text{O}_8^{2-}$, $\text{O}_2$... 1 Edit Delete
21180 $\text{The reaction of sulphur in an alkaline medium is given below:}$ $\text{S}_8{(s)} + a\text{OH}^-_{(aq)} \rightarrow b\text{S}^{2-}_{(aq)} + c\text{S}_2\text{O}_3^{2-}_{(aq)} + d\text{H}_2\text{O}_{(\ell)}$ $\text{The value of 'a' is:}$ 2 208 JEE MCQ NEW $10$, $12$... 2 Edit Delete
21179 $\text{The oxidation states of transition metal atoms in } \text{K}_2\text{Cr}_2\text{O}_7, \text{KMnO}_4 \text{ and } \text{K}_2\text{FeO}_4, \text{ respectively, are } x, y \text{ and } z. \text{ The sum of } x, y \text{ and } z \text{ is-}$ 2 208 JEE MCQ NEW $16$, $12$... 3 Edit Delete
21178 $\text{The oxidation states of iron atoms in compounds (A), (B) and (C), respectively, are } x, y \text{ and } z. \text{ The sum of } x, y \text{ and } z \text{ is} \underline{\phantom{answer}}.$ $\text{Na}_4[\text{Fe(CN)}_5\text{NOS}] \quad \text{Na}_4[\text{FeO}_4] \quad [\text{Fe}_2(\text{CO})_9]$ 2 208 JEE MCQ NEW 4, 5... 3 Edit Delete
21177 $\text{While titrating dilute HCl solution with aqueous NaOH, which of the following will not be required?}$ 2 208 JEE MCQ NEW $\text{Clamp and phenolphthalein}$, $\text{Pipette and distilled water}$... 4 Edit Delete
21176 $\text{For a weak acid } \text{HA} \text{ with a degree of dissociation } x, \text{ which of the following gives the correct expression for } (\text{pH} - \text{pK}_a)?$ 2 207 JEE MCQ NEW $\log(1+2x)$, $\log\left(\frac{1-x}{x}\right)$... 4 Edit Delete
21175 $\text{For a weak acid } \text{HA} \text{ with a degree of dissociation } x, \text{ which of the following gives the correct expression for } (\text{pH} - \text{pK}_a)?$ 2 207 JEE MCQ NEW $\log(1+2x)$, $\log\left(\frac{1-x}{x}\right)$... 4 Edit Delete
21174 $\text{Consider the given reaction:}$ $\text{H}_2(\text{g}) + \text{I}_2(\text{g}) \rightleftharpoons 2\text{HI}(\text{g})$ $\text{If initially only H}_2 \text{ and I}_2 \text{ are present, which graph correctly predicts the attainment of equilibrium?}$ 2 207 JEE MCQ NEW $\text{Graph 1: Molar conc. vs Time with I}_2, \text{H}_2, \text{HI}$, $\text{Graph 2: Molar conc. vs Time with H}_2, \text{I}_2, \text{HI}$... 2 Edit Delete
21173 $\text{Consider the given reaction:}$ $\text{H}_2(\text{g}) + \text{I}_2(\text{g}) \rightleftharpoons 2\text{HI}(\text{g})$ $\text{If initially only H}_2 \text{ and I}_2 \text{ are present, which graph correctly predicts the attainment of equilibrium?}$ 2 207 JEE MCQ NEW $\text{Graph 1: Molar conc. vs Time with I}_2, \text{H}_2, \text{HI}$, $\text{Graph 2: Molar conc. vs Time with H}_2, \text{I}_2, \text{HI}$... 2 Edit Delete
21172 $\text{Consider the following equilibrium reactions along with their respective equilibrium constants:}$ $x \rightleftharpoons y; \; k_1 = 1$ $y \rightleftharpoons z; \; k_2 = 2$ $z \rightleftharpoons w; \; k_3 = 4$ $\text{Now, calculate the overall equilibrium constant } k_{eq} \text{ for the reaction:}$ $x \rightleftharpoons w$ $\text{Choose the correct answer:}$ 2 207 JEE MCQ NEW $10$, $8$... 2 Edit Delete
21171 $\text{Consider the following equilibrium reactions along with their respective equilibrium constants:}$ $x \rightleftharpoons y ; \ k_1 = 1$ $y \rightleftharpoons z ; \ k_2 = 2$ $z \rightleftharpoons w ; \ k_3 = 4$ $\text{Now, calculate the overall equilibrium constant } k_{eq} \text{ for the reaction:}$ $x \rightleftharpoons w$ $\text{Choose the correct answer:}$ 2 207 JEE MCQ NEW $10$, $8$... 2 Edit Delete
21170 $\text{Consider the following reaction at equilibrium at a temperature of T Kelvin, with a given equilibrium constant } K_c = 3 \times 10^{-13}:$ $\text{SO}_2 (g) + \frac{1}{2} \text{O}_2 (g) \rightleftharpoons \text{SO}_3 (g)$ $\text{Now, consider the reverse reaction:}$ $2\text{SO}_3 (g) \rightleftharpoons 2\text{SO}_2 (g) + \text{O}_2 (g)$ $\text{The equilibrium constant for this reaction is denoted as } K'_c \text{ which}$ $\text{can be expressed as } a \times 10^{+b} \text{ in scientific notation.}$ $\text{What is the value of } a + b?$ 2 207 JEE MCQ NEW 26, 29... 1 Edit Delete
21169 $\text{Consider the following reaction at equilibrium at a temperature of T Kelvin, with a given equilibrium constant } K_c = 3 \times 10^{-13}:$ $\text{SO}_2 (g) + \frac{1}{2} \text{O}_2 (g) \rightleftharpoons \text{SO}_3 (g)$ $\text{Now, consider the reverse reaction:}$ $2\text{SO}_3 (g) \rightleftharpoons 2\text{SO}_2 (g) + \text{O}_2 (g)$ $\text{The equilibrium constant for this reaction is denoted as } K'_c \text{ which}$ $\text{can be expressed as } a \times 10^{+b} \text{ in scientific notation.}$ $\text{What is the value of } a + b?$ 2 207 JEE MCQ NEW 26, 29... 1 Edit Delete
21168 $\text{Consider the following equilibrium reaction:}$ $\text{Fe}_2\text{O}_3 (s) + 3\text{CO}(g) \rightleftharpoons 2\text{Fe}(s) + 3\text{CO}_2(g)$ $\text{Which of the following will not affect the equilibrium state?}$ $\text{(I) Addition of } \text{Fe}_2\text{O}_3$ $\text{(II) Addition of } \text{CO}_2$ $\text{(III) Decreasing the mass of } \text{Fe}_2\text{O}_3$ $\text{(IV) Removal of } \text{CO}$ 2 207 JEE MCQ NEW $(\text{II}) \text{ and } (\text{IV})$, $(\text{I}) \text{ and } (\text{IV})$... 3 Edit Delete
21167 $\text{Consider the following equilibrium reaction:}$ $\text{Fe}_2\text{O}_3(s) + 3\text{CO}(g) \rightleftharpoons 2\text{Fe}(s) + 3\text{CO}_2(g)}$ $\text{Which of the following will not affect the equilibrium state?}$ $\text{(I) Addition of Fe}_2\text{O}_3$ $\text{(II) Addition of CO}_2$ $\text{(III) Decreasing the mass of Fe}_2\text{O}_3$ $\text{(IV) Removal of CO}$ 2 207 JEE MCQ NEW $(\text{II}) \text{ and } (\text{IV})$, $(\text{I}) \text{ and } (\text{IV})$... 3 Edit Delete
21166 $\text{Consider the following equilibrium reaction:}$ $\text{H}_2 + \text{I}_2 \rightleftharpoons 2\text{HI}$ $\text{At equilibrium, if the number of molecules of } \text{H}_2, \text{I}_2, \text{ and HI are equal, and the equilibrium constant } K_p = t \times 10^{-1}, \text{ the value of } t \text{ is:}$ 2 207 JEE MCQ NEW 10.0, 0.01... 1 Edit Delete
21165 $\text{Consider the following equilibrium reaction:}$ $\text{H}_2 + \text{I}_2 \rightleftharpoons 2\text{HI}$ $\text{At equilibrium, if the number of molecules of } \text{H}_2, \text{I}_2, \text{ and HI are equal, and the equilibrium constant } K_p = t \times 10^{-1}, \text{ the value of } t \text{ is:}$ 2 207 JEE MCQ NEW $10.0$, $0.01$... 1 Edit Delete
21164 $\text{Decreasing order of Lewis acid character is:}$ $1.\ \text{BF}_3 > \text{BCl}_3 > \text{BBr}_3 > \text{BI}_3$ $2.\ \text{BI}_3 > \text{BBr}_3 > \text{BCl}_3 > \text{BF}_3$ $3.\ \text{BF}_3 > \text{BCl}_3 > \text{BI}_3 > \text{BBr}_3$ $4.\ \text{BI}_3 > \text{BCl}_3 > \text{BF}_3 > \text{BBr}_3$ 2 207 JEE MCQ NEW $\text{BF}_3 > \text{BCl}_3 > \text{BBr}_3 > \text{BI}_3$, $\text{BI}_3 > \text{BBr}_3 > \text{BCl}_3 > \text{BF}_3$... 2 Edit Delete
21163 $\text{Decreasing order of Lewis acid character is:}$ $1.\ \text{BF}_3 > \text{BCl}_3 > \text{BBr}_3 > \text{BI}_3$ $2.\ \text{BI}_3 > \text{BBr}_3 > \text{BCl}_3 > \text{BF}_3$ $3.\ \text{BF}_3 > \text{BCl}_3 > \text{BI}_3 > \text{BBr}_3$ $4.\ \text{BI}_3 > \text{BCl}_3 > \text{BF}_3 > \text{BBr}_3$ 2 207 JEE MCQ NEW $\text{BF}_3 > \text{BCl}_3 > \text{BBr}_3 > \text{BI}_3$, $\text{BI}_3 > \text{BBr}_3 > \text{BCl}_3 > \text{BF}_3$... 2 Edit Delete
21162 $\text{Consider the following reaction}$ $\text{PCl}_5(g) \rightleftharpoons \text{PCl}_3(g) + \text{Cl}_2(g)$ $\text{Select the correct statement about the above equilibrium reaction:}$ 2 207 JEE MCQ NEW $\text{On adding He gas at constant volume, equilibrium shifts in forward reaction.}$, $\text{On adding He gas at constant pressure, equilibrium shifts in forward reaction.}$... 2 Edit Delete
21161 $\text{Consider the following reaction}$ $\text{PCl}_5(g) \rightleftharpoons \text{PCl}_3(g) + \text{Cl}_2(g)$ $\text{Select the correct statement about the above equilibrium reaction:}$ 2 207 JEE MCQ NEW $\text{On adding He gas at constant volume, equilibrium shifts in forward reaction.}$, $\text{On adding He gas at constant pressure, equilibrium shifts in forward reaction.}$... 2 Edit Delete
21160 $\text{If the concentration of } \text{H}^+ \text{ ions is increased by a factor of 1000, what will happen to the pH?}$ 2 207 JEE MCQ NEW $\text{Decreased by 3}$, $\text{Increased by 3}$... 1 Edit Delete
21159 $\text{If the concentration of } \text{H}^+ \text{ ions is increased by a factor of 1000, what will happen to the pH?}$ 2 207 JEE MCQ NEW $\text{Decreased by 3}$, $\text{Increased by 3}$... 1 Edit Delete
21158 $\text{The pH of the solution obtained by mixing 600 mL of 0.04 M HCl and 400 mL of 0.02 M H}_2\text{SO}_4 \text{ is:}$ $[\log 4 = 0.6]$ 2 207 JEE MCQ NEW $3.4$, $5.4$... 3 Edit Delete
21157 $\text{The pH of the solution obtained by mixing 600 mL of 0.04 M HCl and 400 mL of 0.02 M H}_2\text{SO}_4 \text{ is:}$ $[\log 4 = 0.6]$ 2 207 JEE MCQ NEW $3.4$, $5.4$... 3 Edit Delete
21156 $\text{A 25 mL buffer solution is prepared by mixing CH}_3\text{COOH of concentration 0.1 M and CH}_3\text{COONa of concentration 0.01 M. If the pH of the solution is 5, then the } pK_a \text{ of CH}_3\text{COOH is:}$ $1. \text{ Four (4)}$ $2. \text{ Five (5)}$ $3. \text{ Six (6)}$ $4. \text{ Seven (7)}$ 2 207 JEE MCQ NEW $\text{Four (4)}$, $\text{Five (5)}$... 3 Edit Delete
21155 $\text{A 25 mL buffer solution is prepared by mixing CH}_3\text{COOH of concentration 0.1 M and CH}_3\text{COONa of concentration 0.01 M. If the pH of the solution is 5, then the pK}_a\text{ of CH}_3\text{COOH is:}$ $1.\ \text{Four (4)}$ $2.\ \text{Five (5)}$ $3.\ \text{Six (6)}$ $4.\ \text{Seven (7)}$ 2 207 JEE MCQ NEW $\text{Four (4)}$, $\text{Five (5)}$... 3 Edit Delete
21154 $\text{Consider the following reaction,}$ $\text{H}_2\text{O}(g) \rightleftharpoons \text{H}_2(g) + \frac{1}{2} \text{O}_2(g)$ $\text{If } K_{\text{eq}} = 2 \times 10^{-3} \text{ at 2300 K and the initial pressure of H}_2\text{O}(g) \text{ is 1 atm,}$ $\text{then the degree of dissociation of the above reaction will be } x \times 10^{-2},$ $\text{and the value of } x \text{ is:}$ 2 207 JEE MCQ NEW 3, 4... 3 Edit Delete
21153 $\text{Consider the following reaction,}$ $\text{H}_2\text{O}(g) \rightleftharpoons \text{H}_2(g) + \frac{1}{2} \text{O}_2(g)$ $\text{If } K_{\text{eq}} = 2 \times 10^{-3} \text{ at 2300 K and the initial pressure of H}_2\text{O}(g) \text{ is 1 atm,}$ $\text{then the degree of dissociation of the above reaction will be } x \times 10^{-2},$ $\text{and the value of } x \text{ is:}$ 2 207 JEE MCQ NEW 3, 4... 3 Edit Delete
21152 $\text{For a hypothetical reaction}$ $\text{A} \rightleftharpoons \text{B} ; \text{K}_{\text{eq}} = 10^2$ $\text{(Use T = 27 °C, R = 8.3 JK}^{-1}\text{mol}^{-1}, \ln 10 = 2.3)}$ $\text{If the value of } \Delta G^\circ \text{ for the above reaction is } -x \text{ kJ, the value of } 2x \text{ will be:}$ $\text{(Round off to the nearest integer)}$ 2 207 JEE MCQ NEW $11$, $19$... 3 Edit Delete
21151 $\text{For a hypothetical reaction}$ $\text{A} \rightleftharpoons \text{B} ; \text{K}_{\text{eq}} = 10^2$ $\text{(Use T = 27 °C, R = 8.3 JK}^{-1}\text{mol}^{-1}, \ln 10 = 2.3)}$ $\text{If the value of } \Delta G^\circ \text{ for the above reaction is } -x \text{ kJ, the value of } 2x \text{ will be:}$ $\text{(Round off to the nearest integer)}$ 2 207 JEE MCQ NEW 11, 19... 3 Edit Delete
21150 $\text{pH of 0.005 M calcium acetate (} pK_a \text{ of CH}_3\text{COOH} = 4.74) \text{ is:}$ 2 207 JEE MCQ NEW $7.04$, $9.37$... 4 Edit Delete
21149 $\text{pH of 0.005 M calcium acetate (} pK_a \text{ of CH}_3\text{COOH} = 4.74) \text{ is:}$ 2 207 JEE MCQ NEW $7.04$, $9.37$... 4 Edit Delete
21148 $\text{An aqueous solution of 1M NaCl and 1M HCl is:}$ 2 207 JEE MCQ NEW $\text{not a buffer but pH} < 7$, $\text{not a buffer but pH} > 7$... 1 Edit Delete
21147 $\text{An aqueous solution of 1M NaCl and 1M HCl is:}$ 2 207 JEE MCQ NEW $\text{not a buffer but pH} < 7$, $\text{not a buffer but pH} > 7$... 1 Edit Delete
21146 $\text{The species, among the following, that act as both Br\"onsted acid and base is/are:}$ $1.\ \text{H}_2\text{PO}_2^- \newline 2.\ \text{HPO}_3^{2-} \newline 3.\ \text{HPO}_4^{2-} \newline 4.\ \text{All of the above}$ 2 207 JEE MCQ NEW $\text{H}_2\text{PO}_2^-$, $\text{HPO}_3^{2-}$... 3 Edit Delete
21145 $\text{The species, among the following, that act as both Br\"onsted acid and base is/are:}$ $1.\ \text{H}_2\text{PO}_2^- \newline 2.\ \text{HPO}_3^{2-} \newline 3.\ \text{HPO}_4^{2-} \newline 4.\ \text{All of the above}$ 2 207 JEE MCQ NEW $\text{H}_2\text{PO}_2^-$, $\text{HPO}_3^{2-}$... 4 Edit Delete
21144 $\text{The solubility product of } \text{PbI}_2 \text{ is } 8.0 \times 10^{-9}. \text{ The solubility of lead iodide in } 0.1 \text{ molar solution of lead nitrate is } x \times 10^{-6} \text{ mol/L. The value of } x \text{ is:}$ $\text{(Rounded off to the nearest integer) } [\text{Given: } \sqrt{2} = 1.41]$ 2 207 JEE MCQ NEW 154, 423... 4 Edit Delete
21143 $\text{The solubility product of } \text{PbI}_2 \text{ is } 8.0 \times 10^{-9}. \text{ The solubility of lead iodide in } 0.1 \text{ molar solution of lead nitrate is } x \times 10^{-6} \text{ mol/L. The value of } x \text{ is:}$ $\text{(Rounded off to the nearest integer) } [\text{Given: } \sqrt{2} = 1.41]$ 2 207 JEE MCQ NEW 154, 423... 4 Edit Delete
21142 $\text{If 200 mL of 0.01 M HCl is mixed with 400 mL of 0.01 M H}_2\text{SO}_4, \text{ what is the pH of the resulting mixture?}$ $\text{(Given: log 2 = 0.30, log 3 = 0.48, log 5 = 0.70, log 7 = 0.84, log 11 = 1.04)}$ 2 207 JEE MCQ NEW $1.14$, $1.78$... 2 Edit Delete
21141 $\text{If 200 mL of 0.01 M HCl is mixed with 400 mL of 0.01 M H}_2\text{SO}_4, \text{ what is the pH of the resulting mixture?}$ $\text{(Given: log 2 = 0.30, log 3 = 0.48, log 5 = 0.70, log 7 = 0.84, log 11 = 1.04)}$ 2 207 JEE MCQ NEW $1.14$, $1.78$... 2 Edit Delete
21140 $\text{The pH of } 0.001 \text{ M NaOH solution will be:}$ 2 207 JEE MCQ NEW $3$, $11$... 2 Edit Delete
21139 $\text{The pH of } 0.001 \text{ M NaOH solution will be:}$ 2 207 JEE MCQ NEW $3$, $11$... 2 Edit Delete
21138 $\text{Initially 2 moles of } \text{NOCl} \text{ taken in 1 L of closed container and it dissociates into NO and Cl}_2 \text{ gas.}$ $\text{The reaction is as follows:}$ $2\text{NOCl}(g) \rightleftharpoons 2\text{NO}(g) + \text{Cl}_2(g)$ $\text{Calculate the equilibrium constant } K_c \text{ given that 0.4 moles of NO is obtained at equilibrium.}$ 2 207 JEE MCQ NEW $142 \times 10^{-4}$, $142 \times 10^{-6}$... 3 Edit Delete
21137 $\text{Initially 2 moles of } \text{NOCl} \text{ taken in 1 L of closed container and it dissociates into NO and Cl}_2 \text{ gas.}$ $\text{The reaction is as follows:}$ $2\text{NOCl}(g) \rightleftharpoons 2\text{NO}(g) + \text{Cl}_2(g)$ $\text{Calculate the equilibrium constant } K_c \text{ given that 0.4 moles of NO is obtained at equilibrium.}$ 2 207 JEE MCQ NEW $142 \times 10^{-4}$, $142 \times 10^{-6}$... 3 Edit Delete
21136 $\text{For the reaction equilibrium, } \text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g), \text{ the concentrations of } \text{N}_2\text{O}_4 \text{ and } \text{NO}_2 \text{ at equilibrium are } 4.8 \times 10^{-2} \text{ and } 1.2 \times 10^{-2} \text{ mol L}^{-1} \text{ respectively. The value of } K_c \text{ for the reaction is:}$ 2 207 JEE MCQ NEW $3.3 \times 10^{2} \text{ mol L}^{-1}$, $3 \times 10^{-1} \text{ mol L}^{-1}$... 3 Edit Delete
21135 $\text{For the reaction equilibrium, } \text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g),$ $\text{the concentrations of } \text{N}_2\text{O}_4 \text{ and } \text{NO}_2 \text{ at equilibrium are } 4.8 \times 10^{-2} \text{ and } 1.2 \times 10^{-2} \text{ mol L}^{-1} \text{ respectively.}$ $\text{The value of } K_c \text{ for the reaction is:}$ 2 207 JEE MCQ NEW $3.3 \times 10^{2} \text{ mol L}^{-1}$, $3 \times 10^{-1} \text{ mol L}^{-1}$... 3 Edit Delete
21134 $\text{Consider the reaction equilibrium:}$ $2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g); \quad \Delta H^\circ = -198 \text{ kJ}$ $\text{On the basis of Le-Chatelier's principle, the condition favorable for the forward reaction is:}$ 2 207 JEE MCQ NEW $\text{lowering of temperature as well as pressure}$, $\text{increasing temperature as well as pressure}$... 3 Edit Delete
21133 $\text{Consider the reaction equilibrium:}$ $2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g); \quad \Delta H^\circ = -198 \text{ kJ}$ $\text{On the basis of Le-Chatelier's principle, the condition favorable for the forward reaction is:}$ 2 207 JEE MCQ NEW $\text{lowering of temperature as well as pressure}$, $\text{increasing temperature as well as pressure}$... 3 Edit Delete
21132 $\text{The equilibrium constant for the reaction}$ $\text{N}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{NO}(g)$ $\text{at temperature T is } 4 \times 10^{-4}. \text{ The value of } K_c \text{ for the reaction,}$ $\text{NO}(g) \rightleftharpoons \frac{1}{2} \text{N}_2(g) + \frac{1}{2} \text{O}_2(g) \text{ at the same temperature is:}$ 2 207 JEE MCQ NEW $2.5 \times 10^2$, $5 \times 10^1$... 2 Edit Delete
21131 $\text{The equilibrium constant for the reaction}$ $\text{N}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{NO}(g)$ $\text{at temperature T is } 4 \times 10^{-4}. \text{ The value of } K_c \text{ for the reaction,}$ $\text{NO}(g) \rightleftharpoons \frac{1}{2} \text{N}_2(g) + \frac{1}{2} \text{O}_2(g) \text{ at the same temperature is:}$ 2 207 JEE MCQ NEW $2.5 \times 10^2$, $5 \times 10^1$... 2 Edit Delete
21130 $\text{The conjugate base of } \text{H}_2\text{PO}_4^- \text{ is:}$ 2 207 JEE MCQ NEW $\text{PO}_4^{3-}$, $\text{P}_2\text{O}_5$... 4 Edit Delete
21129 $\text{The conjugate base of } \text{H}_2\text{PO}_4^- \text{ is:}$ 2 207 JEE MCQ NEW $\text{PO}_4^{3-}$, $\text{P}_2\text{O}_5$... 4 Edit Delete
21128 $\text{The exothermic formation of ClF}_3 \text{ is represented by the equation:}$ $\text{Cl}_2(g) + 3\text{F}_2(g) \rightleftharpoons 2\ \text{ClF}_3(g); \ \Delta H_r = -329 \ \text{kJ}$ $\text{Which of the following will increase the quantity of ClF}_3 \text{ in an equilibrium mixture of Cl}_2, \text{ F}_2, \text{ and ClF}_3?$ 2 207 JEE MCQ NEW $\text{Adding F}_2$, $\text{Increasing the volume of the container}$... 1 Edit Delete
21127 $\text{The exothermic formation of ClF}_3 \text{ is represented by the equation:}$ $\text{Cl}_2(g) + 3\text{F}_2(g) \rightleftharpoons 2 \text{ClF}_3(g); \quad \Delta H_r = -329 \text{ kJ}$ $\text{Which of the following will increase the quantity of ClF}_3 \text{ in an}$ $\text{equilibrium mixture of Cl}_2, \text{ F}_2, \text{ and ClF}_3?$ 2 207 JEE MCQ NEW $\text{Adding F}_2$, $\text{Increasing the volume of the container}$... 1 Edit Delete
21126 $\text{In a closed reaction vessel, Phosphorus pentachloride dissociates as follows:}$ $\text{PCl}_5(g) \rightleftharpoons \text{PCl}_3(g) + \text{Cl}_2(g)$ $\text{If the total pressure at equilibrium of the reaction mixture is } P \text{ and the degree of dissociation of PCl}_5 \text{ is } x, \text{ the partial pressure of PCl}_3 \text{ will be:}$ 2 207 JEE MCQ NEW $\left( \frac{x}{x+1} \right) P$, $\left( \frac{2x}{x-1} \right) P$... 1 Edit Delete
21125 $\text{In a closed reaction vessel, Phosphorus pentachloride dissociates as follows:}$ $\text{PCl}_5(g) \rightleftharpoons \text{PCl}_3(g) + \text{Cl}_2(g)$ $\text{If the total pressure at equilibrium of the reaction mixture is } P \text{ and the degree of dissociation of PCl}_5 \text{ is } x, \text{ the partial pressure of PCl}_3 \text{ will be:}$ 2 207 JEE MCQ NEW $\left( \frac{x}{x+1} \right) P$, $\left( \frac{2x}{x-1} \right) P$... 1 Edit Delete
21124 $\text{The first and second dissociation constants of an acid } \text{H}_2\text{A} \text{ are } 1.0 \times 10^{-5} \text{ and } 5.0 \times 10^{-10} \text{ respectively.}$ $\text{The overall dissociation constant of the acid will be:}$ 2 207 JEE MCQ NEW $5.0 \times 10^{-5}$, $5.0 \times 10^{15}$... 3 Edit Delete
21123 $\text{The first and second dissociation constants of an acid } \text{H}_2\text{A} \text{ are } 1.0 \times 10^{-5} \text{ and } 5.0 \times 10^{-10} \text{ respectively. The overall dissociation constant of the acid will be:}$ 2 207 JEE MCQ NEW $5.0 \times 10^{-5}$, $5.0 \times 10^{15}$... 3 Edit Delete
21122 $\text{In a saturated solution of the sparingly soluble electrolyte AgIO}_3$ $\text{(molecular mass = 283) the equilibrium is represented by:}$ $\text{AgIO}_3((s)) \rightleftharpoons \text{Ag}^+((aq)) + \text{IO}_3^-((aq))$ $\text{If the solubility product constant } K_{sp} \text{ of AgIO}_3 \text{ at a given temperature}$ $\text{is } 1.0 \times 10^{-8}, \text{ Calculate the mass of AgIO}_3 \text{ contained in 100 ml of its}$ $\text{saturated solution.}$ 2 207 JEE MCQ NEW $28.3 \times 10^{-2} \text{ g}$, $2.83 \times 10^{-3} \text{ g}$... 2 Edit Delete
21121 $\text{In a saturated solution of the sparingly soluble electrolyte AgIO}_3$ $\text{(molecular mass = 283) the equilibrium is represented by:}$ $\text{AgIO}_3\text{(s)} \rightleftharpoons \text{Ag}^+\text{(aq)} + \text{IO}_3^-\text{(aq)}$ $\text{If the solubility product constant } K_{sp} \text{ of AgIO}_3 \text{ at a given temperature}$ $\text{is } 1.0 \times 10^{-8}, \text{ Calculate the mass of AgIO}_3 \text{ contained in 100 ml of its}$ $\text{saturated solution.}$ 2 207 JEE MCQ NEW $28.3 \times 10^{-2} \text{ g}$, $2.83 \times 10^{-3} \text{ g}$... 2 Edit Delete
21120 $\text{At 25°C, the solubility product of Mg(OH)}_2 \text{ is } 1.0 \times 10^{-11}. \text{ At which pH, will Mg}^{2+} \text{ ions start precipitating in the form of Mg(OH)}_2 \text{ from a solution of } 0.001 \text{ M Mg}^{2+} \text{ ions?}$ 2 207 JEE MCQ NEW $8$, $9$... 3 Edit Delete
21119 $\text{At 25°C, the solubility product of Mg(OH)}_2 \text{ is } 1.0 \times 10^{-11}. \text{ At which pH, will Mg}^{2+} \text{ ions start precipitating in the form of Mg(OH)}_2 \text{ from a solution of } 0.001 \text{ M Mg}^{2+} \text{ ions?}$ 2 207 JEE MCQ NEW $8$, $9$... 3 Edit Delete
21118 $\text{The solubility product of silver bromide is } 5.0 \times 10^{-13}. \text{ The quantity of potassium bromide (molar mass taken as } 120 \text{ g mol}^{-1}) \text{ to be added to 1 litre of } 0.05 \text{ M solution of silver nitrate to start the precipitation of AgBr is-}$ 2 207 JEE MCQ NEW $5.0 \times 10^{-8} \text{ g}$, $1.2 \times 10^{-10} \text{ g}$... 3 Edit Delete
21117 $\text{The solubility product of silver bromide is } 5.0 \times 10^{-13}. \text{ The quantity of potassium bromide (molar mass taken as } 120 \text{ g mol}^{-1}) \text{ to be added to 1 litre of } 0.05 \text{ M solution of silver nitrate to start the precipitation of AgBr is-}$ 2 207 JEE MCQ NEW $5.0 \times 10^{-8} \text{ g}$, $1.2 \times 10^{-10} \text{ g}$... 3 Edit Delete
21116 $\text{In aqueous solution, the ionization constants for carbonic acid are}$ $K_1 = 4.2 \times 10^{-7}$ $\text{and}$ $K_2 = 4.8 \times 10^{-11}$ $\text{The correct statement for a saturated 0.034 M solution of the carbonic acid is:}$ 2 207 JEE MCQ NEW $\text{The concentration of } \text{H}^+ \text{ is double that of } \text{CO}_3^{2-}$, $\text{The concentration of } \text{CO}_3^{2-} \text{ is 0.034 M.}$... 4 Edit Delete
21115 $\text{In aqueous solution, the ionization constants for carbonic acid are}$ $K_1 = 4.2 \times 10^{-7}$ $\text{and}$ $K_2 = 4.8 \times 10^{-11}$ $\text{The correct statement for a saturated 0.034 M solution of the carbonic acid is:}$ 2 207 JEE MCQ NEW $\text{The concentration of } \text{H}^+ \text{ is double that of } \text{CO}_3^{2-}$, $\text{The concentration of } \text{CO}_3^{2-} \text{ is 0.034 M.}$... 4 Edit Delete
21114 $\text{A vessel at 1000 K contains CO}_2 \text{ with a pressure of 0.5 atm. Some of the CO}_2 \text{ is converted into CO on the addition of graphite. If the total pressure at equilibrium is 0.8 atm, the value of K is:}$ 2 207 JEE MCQ NEW $1.8 \text{ atm}$, $3 \text{ atm}$... 1 Edit Delete
21113 $\text{A vessel at 1000 K contains CO}_2 \text{ with a pressure of 0.5 atm. Some of the CO}_2 \text{ is converted into CO on the addition of graphite. If the total pressure at equilibrium is 0.8 atm, the value of K is:}$ 2 207 JEE MCQ NEW $1.8 \text{ atm}$, $3 \text{ atm}$... 1 Edit Delete
21112 $\text{If the equilibrium constant } (K_c) \text{ for the reaction}$ $\text{N}_2(g) + \text{O}_2(g) \rightarrow 2\text{NO}(g) \text{ at temperature } T \text{ is } 4 \times 10^{-4} \text{ then}$ $\text{what will be the value of } K_c \text{ for the reaction,}$ $\text{NO}(g) \rightarrow \frac{1}{2}\text{N}_2(g) + \frac{1}{2}\text{O}_2(g) \text{?}$ 2 207 JEE MCQ NEW $2.5 \times 10^2$, $4 \times 10^{-4}$... 3 Edit Delete
21111 $\text{If the equilibrium constant } (K_c) \text{ for the reaction}$ $\text{N}_2(g) + \text{O}_2(g) \rightarrow 2\text{NO}(g) \text{ at temperature } T \text{ is } 4 \times 10^{-4} \text{ then}$ $\text{what will be the value of } K_c \text{ for the reaction,}$ $\text{NO}(g) \rightarrow \frac{1}{2}\text{N}_2(g) + \frac{1}{2}\text{O}_2(g) \text{?}$ 2 207 JEE MCQ NEW $2.5 \times 10^2$, $4 \times 10^{-4}$... 3 Edit Delete
21110 $\text{The amount of water in litres that must be added to 1 litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2, is:}$ 2 207 JEE MCQ NEW $2.0 \text{ L}$, $9.0 \text{ L}$... 2 Edit Delete
21109 $\text{The amount of water in litres that must be added to 1 litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2, is:}$ 2 207 JEE MCQ NEW $2.0 \ \text{L}$, $9.0 \ \text{L}$... 2 Edit Delete
21108 $\text{The standard Gibbs energy change at 300 K for the reaction}$ $2\text{A} \rightleftharpoons \text{B} + \text{C is } 2494.2 \text{ J. At a given time, the composition of the reaction mixture is }$ $[\text{A}] = \frac{1}{2}, \ [\text{B}] = 2 \text{ and } [\text{C}] = \frac{1}{2}. \text{ The reaction proceeds in the: [assume } R = 8.314 \text{ J/K/mol; } e^{-1} = 0.37]$ 2 207 JEE MCQ NEW $\text{Forward direction because } Q > K_C$, $\text{Reverse direction because } Q > K_C$... 2 Edit Delete
21107 $\text{The standard Gibbs energy change at 300 K for the reaction}$ $2\text{A} \rightleftharpoons \text{B} + \text{C is } 2494.2 \text{ J. At a given time, the composition of the reaction mixture is }$ $[\text{A}] = \frac{1}{2}, \; [\text{B}] = 2 \; \text{and} \; [\text{C}] = \frac{1}{2}.$ $\text{The reaction proceeds in the: [assume R=8.314 J/K/mol; e}^{-1} = 0.37]}$ 2 207 JEE MCQ NEW $\text{Forward direction because Q > K}_C$, $\text{Reverse direction because Q > K}_C$... 2 Edit Delete
21106 $\text{The equilibrium constant at 298 K for a reaction A + B} \rightleftharpoons \text{C + D is 100.}$ $\text{If the initial concentration of all the four species were 1 M each,}$ $\text{then equilibrium concentration of D (in mol L}^{-1}\text{) will be:}$ 2 207 JEE MCQ NEW $0.182$, $0.818$... 3 Edit Delete
21105 $\text{The equilibrium constant at 298 K for a reaction A + B} \rightleftharpoons \text{C + D is 100.}$ $\text{If the initial concentration of all the four species were 1 M each,}$ $\text{then equilibrium concentration of D (in mol L}^{-1}\text{) will be:}$ 2 207 JEE MCQ NEW $0.182$, $0.818$... 3 Edit Delete
21104 $\text{The } pK_a \text{ of a weak acid (HA) and } pK_b \text{ of a weak base (BOH) are 3.2 and 3.4, respectively.}$ $\text{The pH of their salt (AB) solution is:}$ 2 207 JEE MCQ NEW $7.0$, $1.0$... 4 Edit Delete
21103 $\text{The } pK_a \text{ of a weak acid (HA) and } pK_b \text{ of a weak base (BOH) are 3.2 and 3.4, respectively.}$ $\text{The pH of their salt (AB) solution is:}$ 2 207 JEE MCQ NEW $7.0$, $1.0$... 4 Edit Delete
21102 $\text{An aqueous solution contains an unknown concentration of } \text{Ba}^{2+}. \text{When 50 mL of a 1 M solution of } \text{Na}_2\text{SO}_4 \text{ is added, BaSO}_4 \text{ just begins to precipitate.}$ $\text{The final volume is 500 mL. The solubility product of BaSO}_4 \text{ is } 1 \times 10^{-10}. \text{ What is the original concentration of Ba}^{2+}?$ 2 207 JEE MCQ NEW $5 \times 10^{-9} \text{ M}$, $2 \times 10^{-9} \text{ M}$... 3 Edit Delete
21101 $\text{An aqueous solution contains an unknown concentration of } \text{Ba}^{2+}. \text{When 50 mL of a 1 M solution of } \text{Na}_2\text{SO}_4 \text{ is added, BaSO}_4 \text{ just begins to precipitate. The final volume is 500 mL. The solubility product of BaSO}_4 \text{ is } 1 \times 10^{-10}. \text{ What is the original concentration of Ba}^{2+}?$ 2 207 JEE MCQ NEW $5 \times 10^{-9} \text{ M}$, $2 \times 10^{-9} \text{ M}$... 3 Edit Delete
21100 $\text{An aqueous solution contains 0.10 M } \text{H}_2\text{S} \text{ and 0.20 M HCl. If the equilibrium constant for the formation of } \text{HS}^- \text{ from } \text{H}_2\text{S} \text{ is } 1.0 \times 10^{-7}$ $\text{and that of } \text{S}^{2-} \text{ from } \text{HS}^- \text{ ions is } 1.2 \times 10^{-13} \text{ then the concentration of } \text{S}^{2-} \text{ ions in aqueous solution will be:}$ 2 207 JEE MCQ NEW $5 \times 10^{-8} \text{ M}$, $3 \times 10^{-20} \text{ M}$... 2 Edit Delete
21099 $\text{An aqueous solution contains 0.10 M H}_2\text{S and 0.20 M HCl. If the}$ $\text{equilibrium constant for the formation of HS}^- \text{ from H}_2\text{S is } 1.0 \times 10^{-7}$ $\text{and that of S}^{2-} \text{ from HS}^- \text{ ions is } 1.2 \times 10^{-13} \text{ then the concentration}$ $\text{of S}^{2-} \text{ ions in aqueous solution will be:}$ 2 207 JEE MCQ NEW $5 \times 10^{-8} \text{ M}$, $3 \times 10^{-20} \text{ M}$... 2 Edit Delete
21098 $\text{In which one of the following equilibria, } K_p \neq K_c?$ 2 207 JEE MCQ NEW $2\text{NO}(g) \rightleftharpoons \text{N}_2(g) + \text{O}_2(g)$, $2\text{C}(s) + \text{O}_2(g) \rightleftharpoons 2\text{CO}(g)$... 2 Edit Delete
21097 $\text{In which one of the following equilibria, } K_p \neq K_c?$ $1.\ 2\text{NO}(g) \rightleftharpoons \text{N}_2(g) + \text{O}_2(g)$ $2.\ 2\text{C}(s) + \text{O}_2(g) \rightleftharpoons 2\text{CO}(g)$ $3.\ 2\text{HI}(g) \rightleftharpoons \text{H}_2(g) + \text{I}_2(g)$ $4.\ \text{NO}_2(g) + \text{SO}_2(g) \rightleftharpoons \text{NO}(g) + \text{SO}_3(g)$ 2 207 JEE MCQ NEW $2\text{NO}(g) \rightleftharpoons \text{N}_2(g) + \text{O}_2(g)$, $2\text{C}(s) + \text{O}_2(g) \rightleftharpoons 2\text{CO}(g)$... 2 Edit Delete
21096 $\text{The molar solubility of Cd(OH)}_2 \text{ is } 1.84 \times 10^{-5} \text{ M in water. The expected solubility of Cd(OH)}_2 \text{ in a buffer solution of pH } = 12 \text{ is:}$ 2 207 JEE MCQ NEW $2.49 \times 10^{-10} \text{ M}$, $1.84 \times 10^{-9} \text{ M}$... 1 Edit Delete
21095 $\text{The molar solubility of Cd(OH)}_2 \text{ is } 1.84 \times 10^{-5} \text{ M in water. The expected solubility of Cd(OH)}_2 \text{ in a buffer solution of pH } = 12 \text{ is:}$ 2 207 JEE MCQ NEW $2.49 \times 10^{-10} \text{ M}$, $1.84 \times 10^{-9} \text{ M}$... 1 Edit Delete
21094 $\text{What is the molar solubility of aluminum hydroxide (Al(OH)}_3\text{) in a 0.2 M sodium hydroxide (NaOH) solution?}$ $\text{(Given: solubility product of Al(OH)}_3\text{ is } 2.4 \times 10^{-24})$ 2 207 JEE MCQ NEW $3 \times 10^{-22}$, $3 \times 10^{-19}$... 1 Edit Delete
21093 $\text{What is the molar solubility of aluminum hydroxide (Al(OH)}_3\text{) in a 0.2 M sodium hydroxide (NaOH) solution?}$ $\text{(Given: solubility product of Al(OH)}_3\text{ is } 2.4 \times 10^{-24})$ 2 207 JEE MCQ NEW $3 \times 10^{-22}$, $3 \times 10^{-19}$... 1 Edit Delete
21092 $\text{Consider the following statements}$ $\text{a. The correct order of increasing acidic strength}$ $\text{is CH}_4 < \text{NH}_3 < \text{HF} < \text{H}_2\text{O.}$ $\text{b. The ionic product of water is temperature dependent.}$ $\text{c. A monobasic acid with } K_a = 10^{-5} \text{ has a pH = 5. The degree of}$ $\text{dissociation of this acid is 50\%.}$ $\text{The correct statements are:}$ 2 207 JEE MCQ NEW $(\text{a}) \text{ and } (\text{b})$, $(\text{a}), (\text{b}) \text{ and } (\text{c})$... 4 Edit Delete
21091 $\text{Consider the following statements}$ $\text{a. The correct order of increasing acidic strength is } \text{CH}_4 < \text{NH}_3 < \text{HF} < \text{H}_2\text{O.}$ $\text{b. The ionic product of water is temperature dependent.}$ $\text{c. A monobasic acid with } K_a = 10^{-5} \text{ has a pH = 5. The degree of dissociation of this acid is 50\%.}$ $\text{The correct statements are:}$ 2 207 JEE MCQ NEW $(\text{a}) \text{ and } (\text{b})$, $(\text{a}), (\text{b}) \text{ and } (\text{c})$... 4 Edit Delete
21090 $\text{For the reaction, } 2\text{SO}_2(g) + \text{O}_2(g) = 2\text{SO}_3(g), \Delta H = -57.2 \text{ kJ mol}^{-1} \text{ and } K_C = 1.7 \times 10^{16}. \text{ Which of the following statements is incorrect?}$ 2 207 JEE MCQ NEW $\text{The equilibrium will shift in the forward direction as the pressure increases.}$, $\text{The addition of inert gas at constant volume will not affect the equilibrium constant.}$... 3 Edit Delete
21089 $\text{For the reaction, } 2\text{SO}_2(g) + \text{O}_2(g) = 2\text{SO}_3(g), \Delta H = -57.2 \text{ kJ mol}^{-1} \text{ and } K_C = 1.7 \times 10^{16}. \text{ Which of the following statements is incorrect?}$ 2 207 JEE MCQ NEW $\text{The equilibrium will shift in the forward direction as the pressure increases.}$, $\text{The addition of inert gas at constant volume will not affect the equilibrium constant.}$... 3 Edit Delete
21088 $\text{For the following reactions, equilibrium constants are given below:}$ $\text{S}_{(s)} + \text{O}_2_{(g)} \rightleftharpoons \text{SO}_2_{(g)}; \ K_1 = 10^{52}$ $2\text{S}_{(s)} + 3\text{O}_2_{(g)} \rightleftharpoons 2\text{SO}_3_{(g)}; \ K_2 = 10^{129}$ $\text{The equilibrium constant for the reaction, } 2\text{SO}_2_{(g)} + \text{O}_2_{(g)} \rightleftharpoons 2\text{SO}_3_{(g)} \text{ is:}$ 2 207 JEE MCQ NEW $10^{154}$, $10^{181}$... 3 Edit Delete
21087 $\text{For the following reactions, equilibrium constants are given below:}$ $\text{S}_{(s)} + \text{O}_2_{(g)} \rightleftharpoons \text{SO}_2_{(g)}; \ K_1 = 10^{52}$ $2\text{S}_{(s)} + 3\text{O}_2_{(g)} \rightleftharpoons 2\text{SO}_3_{(g)}; \ K_2 = 10^{129}$ $\text{The equilibrium constant for the reaction, } 2\text{SO}_2_{(g)} + \text{O}_2_{(g)} \rightleftharpoons 2\text{SO}_3_{(g)} \text{ is:}$ 2 207 JEE MCQ NEW $10^{154}$, $10^{181}$... 3 Edit Delete
21086 $\text{If solubility product of } \text{Zr}_3(\text{PO}_4)_4 \text{ is denoted by } K_{sp} \text{ and its molar solubility is denoted by } S, \text{ then which of the following relation between } S \text{ and } K_{sp} \text{ is correct?}$ 2 207 JEE MCQ NEW $S = \left( \frac{K_{sp}}{216} \right)^{1/7}$, $S = \left( \frac{K_{sp}}{6912} \right)^{1/7}$... 2 Edit Delete
21085 $\text{If solubility product of } \text{Zr}_3(\text{PO}_4)_4 \text{ is denoted by } K_{sp} \text{ and its molar solubility is denoted by } S, \text{ then which of the following relation between } S \text{ and } K_{sp} \text{ is correct?}$ 2 207 JEE MCQ NEW $S = \left( \frac{K_{sp}}{216} \right)^{1/7}$, $S = \left( \frac{K_{sp}}{6912} \right)^{1/7}$... 2 Edit Delete
21084 $\text{Given that the equilibrium constant } K_C \text{ at 800 K for the reaction}$ $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g) \text{ is 64. What is the equilibrium constant } K_C$ $\text{at 800 K for the given-below reaction is:}$ $\text{NH}_3(g) \rightleftharpoons \frac{1}{2}\text{N}_2(g) + \frac{3}{2}\text{H}_2(g)}$ 2 207 JEE MCQ NEW $\frac{1}{4}$, $\frac{1}{8}$... 2 Edit Delete
21083 $\text{Given that the equilibrium constant } K_C \text{ at 800 K for the reaction}$ $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g) \text{ is } 64. \text{ What is the equilibrium constant } K_C \text{ at}$ $800 \text{ K for the given-below reaction is:}$ $\text{NH}_3(g) \rightleftharpoons \frac{1}{2}\text{N}_2(g) + \frac{3}{2}\text{H}_2(g)$ 2 207 JEE MCQ NEW $\frac{1}{4}$, $\frac{1}{8}$... 2 Edit Delete
21082 $\text{The correct expression for the following reaction is:}$ $\text{Fe}_2\text{N(s)} + \frac{3}{2}\text{H}_2\text{(g)} \rightleftharpoons 2\text{Fe(s)} + \text{NH}_3\text{(g)}$ 2 207 JEE MCQ NEW $K_c = K_p(RT)$, $K_c = K_p(RT)^{-3/2}$... 4 Edit Delete
21081 $\text{The correct expression for the following reaction is:}$ $\text{Fe}_2\text{N(s)} + \frac{3}{2}\text{H}_2\text{(g)} \rightleftharpoons 2\text{Fe(s)} + \text{NH}_3\text{(g)}$ 2 207 JEE MCQ NEW $K_c = K_p(RT)$, $K_c = K_p(RT)^{-3/2}$... 4 Edit Delete
21080 $\text{Arrange the following solution in the decreasing order of pOH:}$ $\text{(A). 0.01 M HCl}$ $\text{(B). 0.01 M NaOH}$ $\text{(C). 0.01 M CH}_3\text{COONa}$ $\text{(D). 0.01 M NaCl}$ 2 207 JEE MCQ NEW $(\text{B}) > (\text{C}) > (\text{D}) > (\text{A})$, $(\text{A}) > (\text{C}) > (\text{D}) > (\text{B})$... 4 Edit Delete
21079 $\text{Arrange the following solution in the decreasing order of pOH:}$ $\text{(A). 0.01 M HCl}$ $\text{(B). 0.01 M NaOH}$ $\text{(C). 0.01 M CH}_3\text{COONa}$ $\text{(D). 0.01 M NaCl}$ 2 207 JEE MCQ NEW $(\text{B}) > (\text{C}) > (\text{D}) > (\text{A})$, $(\text{A}) > (\text{C}) > (\text{D}) > (\text{B})$... 4 Edit Delete
21078 $\text{For a reaction;} \ X + Y \rightleftharpoons 2Z, \ 1.0 \ \text{mol of} \ X, \ 1.5 \ \text{mol of} \ Y \ \text{and} \ 0.5 \ \text{mol of} \ Z \ \text{were taken in a} \ 1 \ \text{L vessel and allowed to react. At equilibrium, the concentration of} \ Z \ \text{was} \ 1.0 \ \text{mol L}^{-1}. \ \text{The equilibrium constant of the reaction is} \ \frac{x}{15}. \ \text{The value of} \ x \ \text{is:}$ 2 207 JEE MCQ NEW $24$, $13$... 3 Edit Delete
21077 $\text{For a reaction;} \ X \ + \ Y \ \rightleftharpoons \ 2Z, \ 1.0 \ \text{mol of} \ X, \ 1.5 \ \text{mol of} \ Y \ \text{and} \ 0.5 \ \text{mol of} \ Z \ \text{were taken in a} \ 1 \ \text{L vessel and allowed to react. At equilibrium, the concentration of} \ Z \ \text{was} \ 1.0 \ \text{mol L}^{-1}. \ \text{The equilibrium constant of the reaction is} \ \frac{x}{15}. \ \text{The value of} \ x \ \text{is:}$ 2 207 JEE MCQ NEW $24$, $13$... 3 Edit Delete
21076 $\text{For the reaction } \text{A}_{(g)} \rightarrow \text{B}_{(g)}, \text{ the value of the equilibrium constant at } 300 \text{ K and } 1 \text{ atm is equal to } 100.0. \text{ The value of } \Delta_r G \text{ for the reaction at } 300 \text{ K and } 1 \text{ atm in } \text{J mol}^{-1} \text{ is } -xR, \text{ where } x \text{ is:}$ $\text{(R = 8.31 J mol}^{-1} \text{ K}^{-1} \text{ and ln } 10 = 2.3)}$ 2 207 JEE MCQ NEW $1400$, $1380$... 2 Edit Delete
21075 $\text{For the reaction } \text{A}_{(g)} \rightarrow \text{B}_{(g)}, \text{ the value of the equilibrium constant at } 300 \text{ K and } 1 \text{ atm is equal to } 100.0. \text{ The value of } \Delta_r G \text{ for the reaction at } 300 \text{ K and } 1 \text{ atm in } \text{J mol}^{-1} \text{ is } -xR, \text{ where } x \text{ is:}$ $\text{(R = 8.31 J mol}^{-1} \text{ K}^{-1} \text{ and ln } 10 = 2.3)}$ 2 207 JEE MCQ NEW 1400, 1380... 2 Edit Delete
21074 $\text{If the equilibrium constant for } A \rightleftharpoons B + C \text{ is } K_{\text{eq}}^{(1)}$ $\text{and that of } B + C \rightleftharpoons P \text{ is } K_{\text{eq}}^{(2)}, \text{ the equilibrium constant for } A \rightleftharpoons P \text{ is:}$ 2 207 JEE MCQ NEW $K_{\text{eq}}^{(2)} - K_{\text{eq}}^{(1)}$, $K_{\text{eq}}^{(1)} \times K_{\text{eq}}^{(2)}$... 2 Edit Delete
21073 $\text{If the equilibrium constant for } A \rightleftharpoons B + C \text{ is } K_{\text{eq}}^{(1)}$ $\text{and that of } B + C \rightleftharpoons P \text{ is } K_{\text{eq}}^{(2)}, \text{ the equilibrium constant for } A \rightleftharpoons P \text{ is:}$ 2 207 JEE MCQ NEW $K_{\text{eq}}^{(2)} - K_{\text{eq}}^{(1)}$, $K_{\text{eq}}^{(1)} \times K_{\text{eq}}^{(2)}$... 2 Edit Delete
21072 $\text{At 1990 K and 1 atm pressure, there are an equal number of Cl}_2 \text{ molecules and Cl atoms in the reaction mixture.}$ $\text{The value of } K_P \text{ for the reaction } \text{Cl}_2{(g)} \rightleftharpoons 2 \text{Cl}{(g)} \text{ under the above conditions is } x \times 10^{-1}. \text{ The value of } x \text{ is:}$ 2 207 JEE MCQ NEW $4$, $8$... 3 Edit Delete
21071 $\text{At 1990 K and 1 atm pressure, there are an equal number of Cl}_2 \text{ molecules and Cl atoms in the reaction mixture.}$ $\text{The value of } K_P \text{ for the reaction } \text{Cl}_2{(g)} \rightleftharpoons 2 \text{Cl}{(g)} \text{ under the above conditions is } x \times 10^{-1}. \text{ The value of } x \text{ is:}$ 2 207 JEE MCQ NEW $4$, $8$... 3 Edit Delete
21070 $100 \ \text{mL of} \ 0.1 \ \text{M HCl is taken in a beaker and to it} \ 100 \ \text{mL of} \ 0.1 \ \text{M NaOH is added in steps of} \ 2 \ \text{mL and the pH is continuously measured. Which of the following graphs correctly depicts the change in pH?}$ 2 207 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
21069 $100 \text{ mL of } 0.1 \text{ M HCl is taken in a beaker and to it } 100 \text{ mL of } 0.1 \text{ M NaOH is added in steps of } 2 \text{ mL and the pH is continuously measured. Which of the following graphs correctly depicts the change in pH?}$ 2 207 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
21068 $\text{An acidic buffer is obtained on mixing:}$ $1.\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{CH}_3\text{COOH and}\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{NaOH.}$ $2.\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{HCl and}\ 200\ \text{mL of}\ 0.1\ \text{M}\ \text{NaCl.}$ $3.\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{HCl and}\ 200\ \text{mL of}\ 0.1\ \text{M}\ \text{CH}_3\text{COONa.}$ $4.\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{CH}_3\text{COOH and}\ 200\ \text{mL of}\ 0.1\ \text{M}\ \text{NaOH.}$ 2 207 JEE MCQ NEW $100\ \text{mL of}\ 0.1\ \text{M}\ \text{CH}_3\text{COOH and}\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{NaOH.}$, $100\ \text{mL of}\ 0.1\ \text{M}\ \text{HCl and}\ 200\ \text{mL of}\ 0.1\ \text{M}\ \text{NaCl.}$... 3 Edit Delete
21067 $\text{An acidic buffer is obtained on mixing:}$ $1.\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{CH}_3\text{COOH and}\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{NaOH.}$ $2.\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{HCl and}\ 200\ \text{mL of}\ 0.1\ \text{M}\ \text{NaCl.}$ $3.\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{HCl and}\ 200\ \text{mL of}\ 0.1\ \text{M}\ \text{CH}_3\text{COONa.}$ $4.\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{CH}_3\text{COOH and}\ 200\ \text{mL of}\ 0.1\ \text{M}\ \text{NaOH.}$ 2 207 JEE MCQ NEW $100\ \text{mL of}\ 0.1\ \text{M}\ \text{CH}_3\text{COOH and}\ 100\ \text{mL of}\ 0.1\ \text{M}\ \text{NaOH.}$, $100\ \text{mL of}\ 0.1\ \text{M}\ \text{HCl and}\ 200\ \text{mL of}\ 0.1\ \text{M}\ \text{NaCl.}$... 3 Edit Delete
21066 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{When Cu (II) and sulphide ions are mixed, they react together extremely quickly to give a solid.}$ $\text{Reason (R):}$ $\text{The equilibrium constant of Cu}^{2+}\text{(aq)} + \text{S}^{2-}\text{(aq)} \rightleftharpoons \text{CuS(s)} \text{ is high because the solubility product is low.}$ 2 207 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are False.}$... 4 Edit Delete
21065 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{When Cu (II) and sulphide ions are mixed, they react together extremely quickly to give a solid.}$ $\text{Reason (R):}$ $\text{The equilibrium constant of Cu}^{2+}\text{(aq)} + \text{S}^{2-}\text{(aq)} \rightleftharpoons \text{CuS(s)} \text{ is high because the solubility product is low.}$ 2 207 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are False.}$... 4 Edit Delete
21064 $\text{The pH of an ammonium phosphate solution, if the } pK_a \text{ of phosphoric acid and the } pK_b \text{ of ammonium hydroxide are } 5.23 \text{ and } 4.75 \text{ respectively, is:}$ 2 207 JEE MCQ NEW $8$, $6$... 3 Edit Delete
21063 $\text{The pH of an ammonium phosphate solution, if the } pK_a \text{ of phosphoric acid and the } pK_b \text{ of ammonium hydroxide are } 5.23 \text{ and } 4.75 \text{ respectively, is:}$ 2 207 JEE MCQ NEW $8$, $6$... 3 Edit Delete
21062 $\text{The solubility of Ca(OH)}_2 \text{ in water is:}$ $\text{[Given: } K_{sp} \text{ Ca(OH)}_2 \text{ in water = } 5.5 \times 10^{-6}\text{]}$ 2 207 JEE MCQ NEW $1.77 \times 10^{-6}$, $1.11 \times 10^{-6}$... 3 Edit Delete
21061 $\text{The solubility of Ca(OH)}_2 \text{ in water is:}$ $\text{[Given: } K_{sp} \text{ Ca(OH)}_2 \text{ in water = } 5.5 \times 10^{-6}\text{]}$ 2 207 JEE MCQ NEW $1.77 \times 10^{-6}$, $1.11 \times 10^{-6}$... 3 Edit Delete
21060 $\text{pH of a buffer solution of } \text{CH}_3\text{CH}_2\text{COOH(aq.)} \text{ and } \text{CH}_3\text{CH}_2\text{COONa(aq.)} \text{ is 4.}$ $\text{Then, the ratio of } \frac{[\text{CH}_3\text{CH}_2\text{COO}^-]}{[\text{CH}_3\text{CH}_2\text{COOH}]} \text{ is-}$ $\text{(Given } K_a = 10^{-5})$ 2 207 JEE MCQ NEW 0.1, 10... 1 Edit Delete
21059 $\text{pH of a buffer solution of } \text{CH}_3\text{CH}_2\text{COOH(aq.)} \text{ and } \text{CH}_3\text{CH}_2\text{COONa(aq.)} \text{ is 4.}$ $\text{Then, the ratio of } \frac{[\text{CH}_3\text{CH}_2\text{COO}^-]}{[\text{CH}_3\text{CH}_2\text{COOH}]} \text{ is-}$ $\text{(Given } K_a = 10^{-5})$ 2 207 JEE MCQ NEW 0.1, 10... 1 Edit Delete
21058 $\text{Given below are two statements:}$ $\text{Statement I:}$ $\text{According to Lewis's concept, H}_2\text{O acts as an amphoteric substance.}$ $\text{Statement II:}$ $\text{H}_2\text{O act as an acid on reaction with NH}_3\text{, while it acts as a base on reaction with H}_2\text{S.}$ $\text{In light of the above statements choose the correct answer from the options given below:}$ 2 207 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 4 Edit Delete
21057 $\text{Given below are two statements:}$ $\text{Statement I:}$ $\text{According to Lewis's concept, H}_2\text{O acts as an amphoteric substance.}$ $\text{Statement II:}$ $\text{H}_2\text{O act as an acid on reaction with NH}_3, \text{ while it acts as a base on reaction with H}_2\text{S.}$ $\text{In light of the above statements choose the correct answer from the options given below:}$ 2 207 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 4 Edit Delete
21056 $\text{An ideal gas undergoes a cyclic transformation starting from the point A and coming back to the same point by tracing the path}$ $A \rightarrow B \rightarrow C \rightarrow D \rightarrow A$ $\text{as shown in the three cases below:}$ 2 206 JEE MCQ NEW $\Delta U \text{ (Case-III)} > \Delta U \text{ (Case-II)} > \Delta U \text{ (Case-I)}$, $\Delta U \text{ (Case-I)} > \Delta U \text{ (Case-II)} > \Delta U \text{ (Case-III)}$... 4 Edit Delete
21055 $\text{Consider the following reactions:}$ $\text{S}_{(g)} + \frac{3}{2} \text{O}_2_{(g)} \rightarrow \text{SO}_3_{(g)} + 2x \text{ kcal}$ $\text{SO}_2_{(g)} + \frac{1}{2} \text{O}_2_{(g)} \rightarrow \text{SO}_3_{(g)} + y \text{ kcal}$ $\text{The heat of formation of } \text{SO}_2_{(g)} \text{ is given by:}$ 2 206 JEE MCQ NEW $\frac{2x}{y} \text{ kcal}$, $y - 2x \text{ kcal}$... 2 Edit Delete
21054 $\text{A mixture contains one mole of a monoatomic gas and one mole of a diatomic gas.}$ $\text{What is the ratio of the heat capacities at constant volume } (C_V) \text{ to the heat capacities at constant pressure } (C_P) \text{ for the mixture } \left( \text{i.e. } \frac{C_V}{C_P} \right) ?$ 2 206 JEE MCQ NEW $\frac{2}{3}$, $\frac{7}{5}$... 1 Edit Delete
21053 $\text{Calculate the magnitude of heat (q) in joules for an isothermal irreversible expansion, where the system expands against an external pressure of } 8 \text{ bar, and the volume increases by } 10 \text{ L.}$ 2 206 JEE MCQ NEW $8000 \text{ J}$, $2000 \text{ J}$... 1 Edit Delete
21052 $\text{Calculate the standard enthalpy of formation } (\Delta_f H^\circ) \text{ for } 2 \text{ moles of liquid benzene } (\text{C}_6\text{H}_6_{(l)}) \text{ at } 25^\circ\text{C, based on the given thermodynamic data.}$ $\text{Given Data:}$ $\Delta_c H(\text{C}_6\text{H}_6_{(l)}) = -3264.6 \text{ kJ/mol}$ $\Delta_c H(\text{C}_{(s)}) = -393.5 \text{ kJ/mol}$ $\Delta_f H(\text{H}_2\text{O}_{(l)}) = -285.83 \text{ kJ/mol}$ 2 206 JEE MCQ NEW $-92.22 \text{ kJ/mol}$, $-46.11 \text{ kJ/mol}$... 3 Edit Delete
21051 $\text{The correct match for the following options is:}$ $\begin{array}{|c|c|} \hline \text{List I} & \text{List II} \\ \hline \text{(A) Adiabatic} & \text{(P) } \Delta T = 0 \\ \text{(B) Isothermal} & \text{(Q) Heat exchange is zero} \\ \text{(C) Isochoric} & \text{(R) } \Delta P = 0 \\ \text{(D) Isobaric} & \text{(S) Work done is zero} \\ \hline \end{array}$ 2 206 JEE MCQ NEW $\text{A} \rightarrow \text{Q}, \text{B} \rightarrow \text{P}, \text{C} \rightarrow \text{S}, \text{D} \rightarrow \text{R}$, $\text{A} \rightarrow \text{P}, \text{B} \rightarrow \text{Q}, \text{C} \rightarrow \text{R}, \text{D} \rightarrow \text{S}$... 1 Edit Delete
21050 $\text{If the volume of an ideal gas is increased isothermally then its internal energy will be:}$ 2 206 JEE MCQ NEW $\text{Increases}$, $\text{Remains constant}$... 2 Edit Delete
21049 $\text{An athlete is given 100 g of glucose energy equivalent to 1560 kJ to utilize 50 \% of this gained energy in an event. Enthalpy of evaporation of } \text{H}_2\text{O} \text{ is 44 kJ/mol. In order to avoid storage of energy in the body the mass of water (in g) he would perspire is: (Round off to the nearest Integer)}$ 2 206 JEE MCQ NEW $325 \text{ g}$, $319 \text{ g}$... 2 Edit Delete
21048 $\text{Assertion (A):}$ $\text{The first law of thermodynamics has the equation: } \Delta U = q + W$ $\text{Reason (R):}$ $\text{The first law of thermodynamics is based on the law of conservation of energy.}$ 2 206 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
21047 $\text{If a reaction is non-spontaneous at the freezing point of water but is spontaneous at the boiling point of water, then:}$ 2 206 JEE MCQ NEW $\Delta H \ +ve \ \Delta S \ +ve$, $\Delta H \ -ve \ \Delta S \ -ve$... 1 Edit Delete
21046 $\text{The internal energy change when a system goes from state A to B is 40 kJ/mol.}$ $\text{If the system goes from A to B by a reversible path and returns to state A by an irreversible path, what would be the net change in internal energy?}$ 2 206 JEE MCQ NEW $40 \text{ kJ}$, $> 40 \text{kJ}$... 4 Edit Delete
21045 $\text{Assuming ideal behaviour, the magnitude of } \log K \text{ for the following reaction at } 25^\circ C \text{ is}$ $x \times 10^{-1}. \text{ The value of } x \text{ is:}$ $3\text{HC} \equiv \text{CH}_{(g)} \rightleftharpoons \text{C}_6\text{H}_6_{(l)}$ $\left[ \text{Given:}$ $\Delta_f G^\circ (\text{HC} \equiv \text{CH}) = -2.04 \times 10^5 \text{ J mol}^{-1}$ $\Delta_f G^\circ (\text{C}_6\text{H}_6) = -1.24 \times 10^5 \text{ J mol}^{-1}$ $R = 8.314 \text{ J K}^{-1} \text{ mol}^{-1} \right]$ 2 206 JEE MCQ NEW 860, 875... 3 Edit Delete
21044 $\text{Identify correct match using Column I \& Column II}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{(i) Spontaneous process} & \text{(a) Isothermal and isobaric process} \\ \text{(ii) } \Delta H^\circ & \text{(b) } \Delta H < 0 \\ \text{(iii) } \Delta T = 0, \Delta P = 0 & \text{(c) } \Delta G < 0 \\ \text{(iv) Exothermic process} & \text{(d) (Bond energy of reactant) - (Bond energy of product)} \\ \hline \end{array}$ 2 206 JEE MCQ NEW $\text{c d a b}$, $\text{b a c d}$... 1 Edit Delete
21043 $\text{If at 298 K the bond energies of C-H, C-C, C = C and H-H bonds are respectively 414, 347, 615, and 435 kJ mol}^{-1}\text{, the value of enthalpy change for the reaction at 298 K will be:}$ $\text{H}_2\text{C} = \text{CH}_2(g) + \text{H}_2(g) \rightarrow \text{H}_3\text{C} - \text{CH}_3(g)$ 2 206 JEE MCQ NEW $+250 \text{ kJ}$, $-250 \text{ kJ}$... 4 Edit Delete
21042 $\text{Which of the following is the standard enthalpy of formation of carbon monoxide (CO), if the standard enthalpies of combustion of carbon (C) and carbon monoxide (CO) respectively are } -393.5 \text{ kJ mol}^{-1} \text{ and } -283 \text{ kJ mol}^{-1}?$ 2 206 JEE MCQ NEW $110.5 \text{ kJ}$, $676.5 \text{ kJ}$... 4 Edit Delete
21041 $\text{An ideal gas expands in volume from } 1 \times 10^{-3} \text{ m}^3 \text{ to } 1 \times 10^{-2} \text{ m}^3 \text{ at 300 K against a constant pressure of } 1 \times 10^5 \text{ Nm}^{-2}. \text{ The work done is:}$ 2 206 JEE MCQ NEW $-900 \text{ J}$, $-900 \text{ kJ}$... 1 Edit Delete
21040 $(\Delta H - \Delta U)$ \text{ for the formation of carbon monoxide (CO) from its elements at } 298 \text{ K is:} \ (R = 8.314 \text{ JK}^{-1} \text{ mol}^{-1})$ 2 206 JEE MCQ NEW $-1238.78 \text{ J mol}^{-1}$, $1238.78 \text{ J mol}^{-1}$... 2 Edit Delete
21039 $\text{The enthalpy changes for the following processes are listed below:}$ $\text{Cl}_2(g) \rightarrow 2\text{Cl}(g), 242.3 \text{ kJ mol}^{-1}$ $\text{I}_2(g) \rightarrow 2\text{I}(g), 151.0 \text{ kJ mol}^{-1}$ $\text{ICl}(g) \rightarrow \text{I}(g) + \text{Cl}(g), 211.3 \text{ kJ mol}^{-1}$ $\text{I}_2(s) \rightarrow \text{I}_2(g), 62.76 \text{ kJ mol}^{-1}$ $\text{Given that the standard states for iodine and chlorine are } \text{I}_2(s) \text{ and } \text{Cl}_2(g), \text{ the standard enthalpy of formation of ICl (g) is:}$ 2 206 JEE MCQ NEW $-14.6 \text{ kJ mol}^{-1}$, $-20.8 \text{ kJ mol}^{-1}$... 3 Edit Delete
21038 $\text{Assuming that water vapor is an ideal gas, the internal energy change } (\Delta U) \text{ when 1 mol of water is vaporized at 1 bar pressure and } 100^\circ\text{C, will be:}$ $\text{(Given: Molar enthalpy of vaporization of water at 1 bar and } 373\, \text{K} = 41\, \text{kJ mol}^{-1} \text{ and } R = 8.3\, \text{J mol}^{-1} \text{K}^{-1})$ 2 206 JEE MCQ NEW $4.100\, \text{kJ mol}^{-1}$, $3.7904\, \text{kJ mol}^{-1}$... 3 Edit Delete
21037 $\text{Standard entropy of } \text{X}_2, \text{Y}_2 \text{ and } \text{XY}_3 \text{ are } 60, 40 \text{ and } 50 \text{ J K}^{-1} \text{ mol}^{-1}, \text{ respectively. For the reaction, }$ $\frac{1}{2} \text{X}_2 + \frac{3}{2} \text{Y}_2 \rightarrow \text{XY}_3 \Delta \text{H} = -30 \text{ kJ, to be at equilibrium, the temperature will be}$ 2 206 JEE MCQ NEW $500 \text{ K}$, $750 \text{ K}$... 2 Edit Delete
21036 $\text{The oxidizing power of chlorine in an aqueous solution can be determined by the following parameters:}$ $\frac{1}{2} \text{Cl}_2 (g) \xrightarrow{\Delta_{\text{diss}} H^\circ} \text{Cl} (g) \xrightarrow{\Delta_{\text{eg}} H^\circ} \text{Cl}^- (g) \xrightarrow{\Delta_{\text{hyd}} H^\circ} \text{Cl}^- (aq)$ $\text{The energy involved in the conversion of } \frac{1}{2} \text{Cl}_2 (g) \text{ to } \text{Cl}^- (aq) \text{ will be:}$ $\text{Use the following data:}$ $\Delta_{\text{diss}} H^\circ (\text{Cl}_2) = 240 \text{ kJ mol}^{-1}$ $\Delta_{\text{eg}} H^\circ (\text{Cl}) = -349 \text{ kJ mol}^{-1}$ $\Delta_{\text{hyd}} H^\circ (\text{Cl}^-) = -381 \text{ kJ mol}^{-1}$ 2 206 JEE MCQ NEW $-610 \text{ kJ mol}^{-1}$, $-850 \text{ kJ mol}^{-1}$... 1 Edit Delete
21035 $\text{The standard enthalpy of formation of NH}_3 \text{ is } -46.0 \text{ kJ mol}^{-1}. \text{ If the enthalpy of formation of H}_2 \text{ from its atoms is } -436 \text{ kJ mol}^{-1} \text{ and that of N}_2 \text{ is } -712 \text{ kJ mol}^{-1}, \text{ the average bond enthalpy of N - H bond in NH}_3 \text{ is:}$ 2 206 JEE MCQ NEW $-1102 \text{ kJ mol}^{-1}$, $-964 \text{ kJ mol}^{-1}$... 3 Edit Delete
21034 $\text{For a particular reversible reaction at temperature } T, \Delta H \text{ and } \Delta S \text{ were found to be both } +\text{ve. If } T_e \text{ is the temperature at equilibrium, the reaction would be spontaneous when:}$ $1. \ T = T_e$ $2. \ T_e > T$ $3. \ T > T_e$ $4. \ T_e \text{ is 5 times } T$ 2 206 JEE MCQ NEW $T = T_e$, $T_e > T$... 3 Edit Delete
21033 $\text{Consider the reaction:}$ $4\text{NO}_2(g) + \text{O}_2(g) \rightarrow 2\text{N}_2\text{O}_5(g) \quad \Delta_rH = -111 \text{ kJ}$ $\text{If } \text{N}_2\text{O}_5(s) \text{ is formed instead of } \text{N}_2\text{O}_5(g) \text{ in the above reaction, the } \Delta_rH \text{ value will be:}$ $\text{(Given: } \Delta H \text{ of sublimation for } \text{N}_2\text{O}_5 \text{ is } 54 \text{ kJ mol}^{-1})$ 2 206 JEE MCQ NEW $+54 \text{ kJ}$, $+219 \text{ kJ}$... 3 Edit Delete
21032 $\text{The value of enthalpy change (}\Delta H\text{) for the reaction}$ $\text{C}_2\text{H}_5\text{OH}_{(l)} + 3\text{O}_2_{(g)} \rightarrow 2\text{CO}_2_{(g)} + 3\text{H}_2\text{O}_{(l)} \text{ at } 27^\circ \text{C is } -1366.5 \text{ kJ mol}^{-1}.$ $\text{The value of internal energy change for the above reaction at this temperature will be:}$ 2 206 JEE MCQ NEW $-1369.0 \text{ kJ}$, $-1364.0 \text{ kJ}$... 2 Edit Delete
21031 $\text{The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 dm}^3 \text{ to a volume of 100 dm}^3 \text{ at 27}^\circ \text{C is:}$ 2 206 JEE MCQ NEW $38.3 \text{ J mol}^{-1} \text{ K}^{-1}$, $35.8 \text{ J mol}^{-1} \text{ K}^{-1}$... 1 Edit Delete
21030 $\text{The incorrect expression among the following is -}$ $1. \text{In isothermal process, } W_{\text{reversible}} = -nRT \ln \frac{V_f}{V_i}$ $2. \ln K = \frac{\Delta H^\circ - T \Delta S^\circ}{RT}$ $3. K = e^{-\Delta G^\circ / RT}$ $4. \frac{\Delta G_{\text{system}}}{\Delta S_{\text{total}}} = -T$ 2 206 JEE MCQ NEW $W_{\text{reversible}} = -nRT \ln \frac{V_f}{V_i}$, $\ln K = \frac{\Delta H^\circ - T \Delta S^\circ}{RT}$... 2 Edit Delete
21029 $\text{Given}$ $\text{C}_{(\text{graphite})} + \text{O}_2 (g) \rightarrow \text{CO}_2 (g)$ $\Delta_r H^\circ = -393.5 \text{ kJ mol}^{-1}$ $\text{H}_2(g) + \frac{1}{2} \text{O}_2 (g) \rightarrow \text{H}_2\text{O}(l)$ $\Delta_r H^\circ = -285.8 \text{ kJ mol}^{-1}$ $\text{CO}_2( g) + 2\text{H}_2\text{O}(l) \rightarrow \text{CH}_4( g) + 2\text{O}_2( g)$ $\Delta_r H^\circ = +890.3 \text{ kJ mol}^{-1}$ $\text{Based on the above thermochemical equations, the value of } \Delta_r H^\circ \text{ at } 298 \text{ K for the reaction}$ $\text{C}_{(\text{graphite})} + 2\text{H}_2(g) \rightarrow \text{CH}_4(g) \text{ will be:}$ 2 206 JEE MCQ NEW $-74.8 \text{ kJ mol}^{-1}$, $-144.0 \text{ kJ mol}^{-1}$... 1 Edit Delete
21028 $\text{An ideal gas is allowed to expand from 1 L to 10 L against a constant external pressure of 1 bar. The work done in kJ is:}$ 2 206 JEE MCQ NEW $+10.0$, $-9.0$... 4 Edit Delete
21027 $\text{Enthalpy of sublimation of iodine is } 24 \text{ cal g}^{-1} \text{ at } 200 \, ^\circ\text{C. If specific heat of } \text{I}_2(\text{s}) \text{ and } \text{I}_2(\text{vap}) \text{ are } 0.055 \text{ and } 0.031 \text{ cal g}^{-1}\text{K}^{-1} \text{ respectively, then enthalpy of sublimation of iodine at } 250^\circ\text{C in cal g}^{-1} \text{ is:}$ 2 206 JEE MCQ NEW $2.85$, $22.8$... 2 Edit Delete
21026 $\text{What is the difference between } \Delta H \text{ and } \Delta U \ (\Delta H - \Delta U) \text{ when the combustion of one mole of heptane(l) is carried out at a temperature T?}$ 2 206 JEE MCQ NEW $3RT$, $4RT$... 4 Edit Delete
21025 $\text{The change in internal energy, } \Delta U, \text{ in kJ, when a spring undergoes compression, with } 10 \text{ kJ of work performed and } 2 \text{ kJ escaping as heat to the surroundings is:}$ 2 206 JEE MCQ NEW $12$, $-8$... 3 Edit Delete
21024 $\text{What is the change in internal energy for 5 moles of an ideal gas when it undergoes reversible compression from 100 K to 200 K?}$ $\text{(Given } C_V = 28 \text{ J K}^{-1} \text{ mol}^{-1})$ 2 206 JEE MCQ NEW $\Delta U = 8 \text{ kJ}$, $\Delta U = 14 \text{ kJ}$... 2 Edit Delete
21023 $\text{Which one of the following equations does not correctly represent the}$ $\text{first law of thermodynamics for the given processes involving an}$ $\text{ideal gas? (Assume non-expansion work is zero)}$ $1.\ \text{Adiabatic process: } \Delta U = -w$ $2.\ \text{Cyclic process: } q = -w$ $3.\ \text{Isothermal process: } q = -w$ $4.\ \text{Isochoric process: } \Delta U = q$ 2 206 JEE MCQ NEW $\Delta U = -w$, $q = -w$... 1 Edit Delete
21022 $\text{If, for a dimerization reaction, } 2\text{A}_{(g)} \rightarrow \text{A}_2{(g)} \text{ at } 298 \text{ K, } \Delta U^\circ = -20 \text{ kJ mol}^{-1} \text{, } \Delta S^\circ = -30 \text{ J K}^{-1}\text{mol}^{-1}\text{, then } \Delta G^\circ \text{ will be:}$ 2 206 JEE MCQ NEW $-10.4 \text{ kJ}$, $18.9 \text{ kJ}$... 3 Edit Delete
21021 $\text{If, for a dimerization reaction, } 2\text{A}_{(g)} \rightarrow \text{A}_2{(g)} \text{ at } 298 \text{ K, } \Delta U^\circ = -20 \text{ kJ mol}^{-1} \text{, } \Delta S^\circ = -30 \text{ J K}^{-1}\text{mol}^{-1}\text{, then } \Delta G^\circ \text{ will be:}$ 2 206 JEE MCQ NEW $-10.4 \text{ kJ}$, $18.9 \text{ kJ}$... 3 Edit Delete
21020 $\text{Lattice energy and enthalpy of the solution of NaCl are } 788 \text{ kJ mol}^{-1}$ $\text{and } 4 \text{ kJ mol}^{-1}, \text{ respectively. The hydration enthalpy of NaCl is:}$ 2 206 JEE MCQ NEW $-780 \text{ kJ mol}^{-1}$, $-784 \text{ kJ mol}^{-1}$... 2 Edit Delete
21019 $\text{Five moles of an ideal gas at 1 bar and 298 K are expanded into a vacuum till the volume doubles. The work done is:}$ 2 206 JEE MCQ NEW $-RT \ln \frac{V_2}{V_1}$, $C_V(T_2 - T_1)$... 3 Edit Delete
21018 $\text{For one mole of an ideal gas, which of these statements must be true?}$ $\text{(I) U and H each depend only on temperature.}$ $\text{(II) Compressibility factor z is not equal to 1.}$ $\text{(III) C}_{p,m} - C_{v,m} = R$ $\text{(IV) dU = C}_{v}\text{dT for any process.}$ 2 206 JEE MCQ NEW $\text{(I), (III) and (IV)}$, $\text{(I), (II) and (IV)}$... 1 Edit Delete
21017 $\text{The heat of combustion of ethanol into carbon dioxides and water is } -327 \text{ kcal at constant pressure. The heat evolved (in cal) at constant volume and } 27^\circ\text{C (if all gases behave ideally) is:}$ $\text{(R = 2 cal mol}^{-1} \text{ K}^{-1})$ 2 206 JEE MCQ NEW $316 \text{ kcal}$, $326 \text{ kcal}$... 2 Edit Delete
21016 $\text{The internal energy change (in kJ) when 90 g of water undergoes complete evaporation at } 100^\circ\text{C is -}$ $\text{(Given: } \Delta H_{\text{vap}} \text{ for water at } 373 \text{ K} = 41 \text{ kJ/mol, } R = 8.314 \text{ J K}^{-1}\text{mol}^{-1})$ 2 206 JEE MCQ NEW $154.5$, $168.5$... 4 Edit Delete
21015 $\text{The average S--F bond energy in kJ mol}^{-1} \text{ of SF}_6 \text{ is:}$ $\text{[The values of standard enthalpy of formation of SF}_6\text{(g), S(g), and F(g) are } -1100, 275, \text{ and } 80 \text{ kJ mol}^{-1} \text{ respectively.]}$ 2 206 JEE MCQ NEW $309 \text{ kJ mol}^{-1}$, $313 \text{ kJ mol}^{-1}$... 1 Edit Delete
21014 $\text{The reaction of cyanamide, } \text{NH}_2\text{CN}_{(s)} \text{ with oxygen was run in a bomb calorimeter and } \Delta U \text{ was found to be } -742.24 \text{ kJ mol}^{-1}. \text{ The magnitude of } \Delta H_{298} \text{(KJ) for the given-below reaction is:}$ $\text{NH}_2\text{CN}_{(s)} + \frac{3}{2} \text{O}_2_{(g)} \rightarrow \text{N}_2_{(g)} + \text{O}_2_{(g)} + \text{H}_2\text{O}_{(l)}$ $\text{[Assume ideal gases and } R = 8.314 \text{ J mol}^{-1} \text{ K}^{-1}]}$ 2 206 JEE MCQ NEW $741 \text{ KJ}$, $745 \text{ KJ}$... 1 Edit Delete
21013 $\text{Calculate the amount of heat is absorbed for an ideal gas which expands isothermally from 4 litre to 20 litre against the vacuum.}$ 2 206 JEE MCQ NEW $0$, $-50 \text{ kJ}$... 1 Edit Delete
21012 $\text{How many molecules among the following exhibit a non-zero dipole moment?}$ $\text{BeF}_2, \text{BF}_3, \text{H}_2\text{O}, \text{NH}_3, \text{HCl}, \text{CCl}_4$ 2 204 JEE MCQ NEW $4$, $6$... 4 Edit Delete
21011 $\text{Match the compounds given in } \text{Column-I} \text{ with their respective}$ $\text{hybridisation which is given in } \text{Column-II.}$ $\begin{array}{|c|c|} \hline \text{Column-I (Compound)} & \text{Column-II Hybridisation} \\ \hline (i) \ \text{PCl}_5 & (a) \ sp^3d^2 \\ (ii) \ [\text{Pt(CN)}_4]^{-2} & (b) \ sp^3d \\ (iii) \ [\text{Co(NH}_3)_6]^{3+} & (c) \ d^2sp^3 \\ (iv) \ \text{BrF}_5 & (d) \ dsp^2 \\ \hline \end{array}$ $\text{Correct matching is:}$ 2 204 JEE MCQ NEW $\begin{array}{cccc} \text{I} & \text{II} & \text{III} & \text{IV} \\ \text{b} & \text{d} & \text{c} & \text{a} \end{array}$, $\begin{array}{cccc} \text{I} & \text{II} & \text{III} & \text{IV} \\ \text{a} & \text{b} & \text{c} & \text{d} \end{array}$... 1 Edit Delete
21010 $\text{Which of the following linear combination of atomic orbitals will lead}$ $\text{to the formation of molecular orbitals in homonuclear diatomic}$ $\text{molecules [internuclear axis in z-direction]?}$ 2 204 JEE MCQ NEW $2p_z \text{ and } 2p_x$, $2s \text{ and } 2p_x$... 3 Edit Delete
21009 $\text{Which of the following statements is true with respect to}$ $\text{H}_2\text{O}, \text{NH}_3, \text{and CH}_4?$ $\text{A. The central atoms of all the molecules are sp}^3 \text{ hybridized}$ $\text{B. The H--O--H, H--N--H and H--C--H angles in the above molecules}$ $\text{are 104.5}^\circ, 107.5^\circ \text{ and 109.5}^\circ \text{ respectively.}$ $\text{C. The increasing order of dipole moment is CH}_4 < \text{NH}_3 < \text{H}_2\text{O.}$ $\text{D. Both H}_2\text{O and NH}_3 \text{ are Lewis acids and CH}_4 \text{ is a Lewis base}$ $\text{E. A solution of NH}_3 \text{ in H}_2\text{O is basic. In this solution NH}_3 \text{ and H}_2\text{O act}$ $\text{as Lowry-Bronsted acid and base respectively.}$ $\text{Choose the correct answer from the options given below:}$ 2 204 JEE MCQ NEW $\text{A, B and C only}$, $\text{C, D and E only}$... 1 Edit Delete
21008 $\text{Match the molecules in List-I based on their classification according to the octet rule with the correct examples in List-II:}$ $\begin{array}{|c|c|} \hline \text{List-I (Classification of molecules based on octet rule)} & \text{List-II (Example)} \\ \hline \text{A. Molecules that adhere to the octet rule.} & \text{I. NO, NO}_2 \\ \text{B. Molecules with an incomplete octet} & \text{II. BCl}_3 , \text{AlCl}_3 \\ \text{C. Molecules with incomplete octets with odd electron} & \text{III. H}_2\text{SO}_4 , \text{PCl}_5 \\ \text{D. Molecules with an expanded octet} & \text{IV. CCl}_4 , \text{CO}_2 \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 204 JEE MCQ NEW $\text{A-IV, B-II, C-I, D-III}$, $\text{A-III, B-II, C-I, D-IV}$... 1 Edit Delete
21007 $\text{Which of the following molecules exhibit a square pyramidal geometry?}$ 2 204 JEE MCQ NEW $\text{BrF}_5 \text{ \& XeOF}_4$, $\text{SbF}_5 \text{ \& XeOF}_4$... 1 Edit Delete
21006 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).}$ $\text{Assertion (A): Experimentally, the oxygen-oxygen bond lengths in } \text{O}_3 \text{ (ozone) are identical and lie between the bond length of an } \text{O}=\text{O} \text{ double bond and an } \text{O}–\text{O} \text{ single bond.}$ $\text{Reason (R): The lone pair-lone pair repulsion between oxygen atoms is the sole reason why the bond length in ozone is shorter than a double bond (O=O) but longer than a single bond (O–O).}$ $\text{In the light of the above statements, choose the correct answer from the options given below:}$ 2 204 JEE MCQ NEW $(A) \text{ is True but } (R) \text{ is False}$, $(A) \text{ is False but } (R) \text{ is True}$... 1 Edit Delete
21005 $\text{Match List-I with List-II:}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \text{(Species)} & \text{(Hybrid orbitals/Hybridization)} \\ \hline \text{(a) SF}_4 & \text{(i) } sp^3d^2 \\ \text{(b) IF}_5 & \text{(ii) } d^2sp^3 \\ \text{(c) NO}_2^+ & \text{(iii) } sp^3d \\ \text{(d) NH}_4^+ & \text{(iv) } sp^3 \\ & \text{(v) } sp \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 204 JEE MCQ NEW $(a)-(ii), (b)-(i), (c)-(iv) \text{ and } (d)-(v)$, $(a)-(iv), (b)-(iii), (c)-(ii) \text{ and } (d)-(v)$... 4 Edit Delete
21004 $\text{Match List-I with List-II:}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \text{(Expressions)} & \text{(Property)} \\ \hline \Psi_{MO} = \Psi_A - \Psi_B & \text{I. Dipole moment} \\ \mu = Q \times r & \text{II. Bonding molecular orbital} \\ \frac{N_b - N_a}{2} & \text{III. Anti-bonding molecular orbital} \\ \Psi_{MO} = \Psi_A + \Psi_B & \text{IV. Bond order} \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ $1. \text{A-II, B-I, C-IV, D-III}$ $2. \text{A-III, B-IV, C-I, D-II}$ $3. \text{A-III, B-I, C-IV, D-II}$ $4. \text{A-II, B-IV, C-I, D-III}$ 2 204 JEE MCQ NEW $\text{A-II, B-I, C-IV, D-III}$, $\text{A-III, B-IV, C-I, D-II}$... 3 Edit Delete
21003 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{Since electronegativity of F > H, so dipole moment of } \text{NF}_3 > \text{NH}_3.$ $\text{Statement II:}$ \text{The lone pair dipole in } \text{NH}_3 \text{ is not in the direction of the resultant bond dipole, while in the case of } \text{NF}_3, \text{ the lone pair dipole is in the direction of the resultant bond dipole.}$ 2 204 JEE MCQ NEW $\text{Statement I is false but Statement II is true.}$, $\text{Both Statement I and Statement II are false.}$... 2 Edit Delete
21002 $\text{Which of the following species have a trigonal bipyramidal shape?}$ $\text{PF}_5, \text{PBr}_5, [\text{PtCl}_4]^{2-}, \text{SF}_6, \text{BF}_3, \text{BrF}_5, \text{PCl}_5, [\text{Fe(CO)}_5]$ 2 204 JEE MCQ NEW $\text{PF}_5, \text{PBr}_5, \text{PCl}_5, \text{and Fe(CO)}_5 \text{ only}$, $\text{BrF}_5, \text{PF}_5, \text{PCl}_5, \text{and PBr}_5 \text{ only}$... 1 Edit Delete
21001 $\text{Which among the following have single unpaired electron?}$ $\text{N}_2, \text{O}_2, \text{CN}^-, \text{O}_2^-, \text{C}_2^{2-}, \text{N}_2^-$ 2 204 JEE MCQ NEW $\text{O}_2, \text{N}_2$, $\text{CN}^-, \text{C}_2^{2-}$... 4 Edit Delete
21000 $\text{The correct Lewis dot structure for the } \text{NO}_2^- \text{ ion is:}$ 2 204 JEE MCQ NEW $[:\ddot{\text{O}} = \text{N} = \ddot{\text{O}}:]^\ominus$, $[:\ddot{\text{O}} - \ddot{\text{N}} = \ddot{\text{O}}:]^\ominus$... 2 Edit Delete
20999 $\text{How many of the following have zero dipole moment?}$ $\text{H}_2\text{S}, \text{CH}_4, \text{NH}_3, \text{BF}_3, \text{SO}_2, \text{NF}_3$ 2 204 JEE MCQ NEW $\text{Two(2)}$, $\text{Five(5)}$... 1 Edit Delete
20998 $\text{Match the molecules in } \textbf{Column-A} \text{ with their corresponding geometries in } \textbf{Column-B.}$ $\begin{array}{|c|c|} \hline \text{Column-A (Molecule)} & \text{Column-B (Molecular Geometry)} \\ \hline \text{(A) ICl} & \text{(P) T-shape} \\ \text{(B) ICl}_3 & \text{(Q) Pentagonal Bipyramidal} \\ \text{(C) ClF}_5 & \text{(R) Linear} \\ \text{(D) IF}_7 & \text{(S) Square Pyramidal} \\ \hline \end{array}$ $1. \text{A} \rightarrow \text{R}, \text{B} \rightarrow \text{P}, \text{C} \rightarrow \text{Q}, \text{D} \rightarrow \text{S}$ $2. \text{A} \rightarrow \text{R}, \text{B} \rightarrow \text{P}, \text{C} \rightarrow \text{S}, \text{D} \rightarrow \text{Q}$ $3. \text{A} \rightarrow \text{Q}, \text{B} \rightarrow \text{S}, \text{C} \rightarrow \text{R}, \text{D} \rightarrow \text{P}$ $4. \text{A} \rightarrow \text{P}, \text{B} \rightarrow \text{R}, \text{C} \rightarrow \text{S}, \text{D} \rightarrow \text{Q}$ 2 204 JEE MCQ NEW $\text{A} \rightarrow \text{R}, \text{B} \rightarrow \text{P}, \text{C} \rightarrow \text{Q}, \text{D} \rightarrow \text{S}$, $\text{A} \rightarrow \text{R}, \text{B} \rightarrow \text{P}, \text{C} \rightarrow \text{S}, \text{D} \rightarrow \text{Q}$... 2 Edit Delete
20997 $\text{How many of the following compounds exhibit hydrogen bonding?}$ $\text{i.}$ \ \text{Benzene} \ \text{ii.}$ \ \text{H}_2\text{O} \ \text{iii.}$ \ \text{CH}_3\text{OH} \ \text{iv.}$ \ \text{HF} \ \text{v.}$ \ \text{NH}_3 \ \text{vi.}$ \ \text{Phenol with NO}_2 \ \text{vii.}$ \ \text{Phenol with NH}_2 \ \text{viii.}$ \ \text{C}_2\text{H}_6$ 2 204 JEE MCQ NEW $\text{Two}$, $\text{Four}$... 3 Edit Delete
20996 $\text{Choose the correct option based on matching.}$ $\begin{array}{|c|c|} \hline \text{Hybridization} & \text{Shape} \\ \hline \text{A. } sp^3 & \text{I. Octahedral} \\ \text{B. } sp^3d & \text{II. Tetrahedral} \\ \text{C. } sp^2 & \text{III. Trigonal bipyramidal} \\ \text{D. } sp^3d^2 & \text{IV. Trigonal planar} \\ \hline \end{array}$ 2 204 JEE MCQ NEW $\text{A (I); B (II); C (III); D (IV)}$, $\text{A (II); B (III); C (IV); D (I)}$... 2 Edit Delete
20995 $\text{How many of the following compounds contain a central atom that exhibits } \text{sp}^2 \text{ hybridization?}$ $\text{HCHO, C}_2\text{H}_4, \text{SO}_2, \text{C}_6\text{H}_6, \text{B}_2\text{H}_6, \text{BF}_3, \text{SiO}_2(\text{s}), \text{CH}_2\text{Cl}_2$ 2 204 JEE MCQ NEW $4$, $3$... 3 Edit Delete
20994 $\text{Identify the species that exhibits a linear shape from the following options.}$ $\text{1. } \text{I}_3^- \text{2. } \text{I}_3^+ \text{3. } \text{ICl}_3 \text{4. } \text{ICl}_2^+$ 2 204 JEE MCQ NEW $\text{I}_3^-$, $\text{I}_3^+$... 1 Edit Delete
20993 $\text{Consider the } \text{H}_2\text{O}_2 \text{ and } \text{O}_2\text{F}_2 \text{ molecules where X and Y are O-O bond length in } \text{H}_2\text{O}_2 \text{ and } \text{O}_2\text{F}_2 \text{ respectively. Compare X and Y.}$ 2 204 JEE MCQ NEW $X > Y$, $X < Y$... 1 Edit Delete
20992 $\text{Match column I with column II:}$ $\begin{array}{|c|c|} \hline \text{Column-I (Compounds)} & \text{Column-II (number of lone pairs of a central atom)} \\ \hline \text{A. } \text{IF}_7 & \text{P. } 0 \\ \text{B. } \text{ICl}_4^- & \text{Q. } 1 \\ \text{C. } \text{XeF}_2 & \text{R. } 2 \\ \text{D. } \text{XeF}_6 & \text{S. } 3 \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 204 JEE MCQ NEW $\text{A - P, B - Q, C - R, D - S}$, $\text{A - P, B - R, C - S, D - Q}$... 2 Edit Delete
20991 $\text{Shape of } \text{OF}_2 \text{ molecule is:}$ $1. \text{ Bent}$ $2. \text{ Linear}$ $3. \text{ Tetrahedral}$ $4. \text{ T-Shaped}$ 2 204 JEE MCQ NEW $\text{Bent}$, $\text{Linear}$... 1 Edit Delete
20990 $\text{How many of the following compounds are odd electron species?}$ $\text{NO}_2, \text{NO}_2^+, \text{ICl}_4^-, \text{BrF}_3, \text{NO}$ 2 204 JEE MCQ NEW $2$, $0$... 1 Edit Delete
20989 $\text{Find out the magnetic properties of } \text{Li}_2\text{O}, \text{KO}_2, \text{and MgO in that order.}$ 2 204 JEE MCQ NEW $\text{Diamagnetic, Paramagnetic and Diamagnetic}$, $\text{Paramagnetic, Paramagnetic and Diamagnetic}$... 1 Edit Delete
20988 $\text{Which of the following compound(s) is/are paramagnetic in nature?}$ $\text{(a) NO}_2$ $\text{(b) NO}$ $\text{(c) K}_2\text{O}$ $\text{(d) Na}_2\text{O}_2$ 2 204 JEE MCQ NEW $(a) \& (b) \text{ only}$, $(a), (b) \& (c) \text{ only}$... 1 Edit Delete
20987 $\text{The correct statement among the following is:}$ $1.\ \text{When a covalent bond is formed, transfer of electrons takes place}$ $2.\ \text{Pure } \text{H}_2\text{O does not contain any ion}$ $3.\ \text{A bond is formed when attractive forces overcome repulsive forces}$ $4.\ \text{HF is less polar than HBr}$ 2 204 JEE MCQ NEW $\text{When a covalent bond is formed, transfer of electrons takes place}$, $\text{Pure } \text{H}_2\text{O does not contain any ion}$... 3 Edit Delete
20986 $\text{Increasing order of bond strength of } \text{O}_2, \text{O}_2^-, \text{O}_2^{2-} \text{ and } \text{O}_2^+ \text{ is:}$ 2 204 JEE MCQ NEW $\text{O}_2^+ < \text{O}_2 < \text{O}_2^- < \text{O}_2^{2-}$, $\text{O}_2 < \text{O}_2^+ < \text{O}_2^- < \text{O}_2^{2-}$... 4 Edit Delete
20985 $\text{Identify the correct increasing strength of intermolecular H-bonding.}$ 2 204 JEE MCQ NEW $\text{HCN} < \text{H}_2\text{O} < \text{NH}_3$, $\text{HCN} < \text{CH}_4 < \text{NH}_3$... 3 Edit Delete
20984 $\text{Which of the following statement is incorrect regarding PCl}_5\text{?}$ $1.\ \text{In PCl}_5,\ \text{axial bonds are longer than equatorial bonds.}$ $2.\ \text{It has a trigonal bipyramidal structure.}$ $3.\ \text{3 chlorine atoms are in the same plane.}$ $4.\ \text{Hybridisation of 'P' is sp}^3d^2.$ 2 204 JEE MCQ NEW $\text{In PCl}_5,\ \text{axial bonds are longer than equatorial bonds.}$, $\text{It has a trigonal bipyramidal structure.}$... 4 Edit Delete
20983 $\text{Match the molecules in Column-I with their corresponding molecular shapes in Column-II.}$ $\text{Column-I (Molecule)} \quad \text{Column-II (Shape)}$ $(i) \ \text{BF}_3 \quad (a) \ \text{T-shape}$ $(ii) \ \text{SF}_4 \quad (b) \ \text{Square planar}$ $(iii) \ \text{XeF}_4 \quad (c) \ \text{See-saw}$ $(iv) \ \text{ClF}_3 \quad (d) \ \text{Trigonal planar}$ $\text{Choose the correct matching sequence:}$ 2 204 JEE MCQ NEW $(i) \ d \quad (ii) \ c \quad (iii) \ b \quad (iv) \ a$, $(i) \ a \quad (ii) \ b \quad (iii) \ c \quad (iv) \ d$... 1 Edit Delete
20982 $\text{Given below are two statements:}$ $\text{Statement I: } \text{O}^{2-} \text{ and } \text{Mg}^{2+} \text{ have equal radii.}$ $\text{Statement II: They are isoelectronic species.}$ 2 204 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 4 Edit Delete
20981 $\text{Which of the following species has an odd number of electrons?}$ 2 204 JEE MCQ NEW $\text{NO}_2$, $\text{N}_2\text{O}$... 1 Edit Delete
20980 $\text{Among the following compounds, how many contain two lone pairs on the central atom?}$ $\text{XeF}_4, \text{H}_2\text{O}, \text{SF}_4, \text{CF}_4$ 2 204 JEE MCQ NEW $4$, $1$... 3 Edit Delete
20979 $\text{Species, among the following, that experience an increase in bond strength upon the removal of an electron are:}$ $\text{(a) } \text{B}_2$ $\text{(b) } \text{NO}$ $\text{(c) } \text{N}_2$ $\text{(d) } \text{O}_2$ $\text{(e) } \text{C}_2$ $\text{Choose the correct option:}$ 2 204 JEE MCQ NEW $\text{(b) and (d)}$, $\text{(a), (b) and (d)}$... 1 Edit Delete
20978 $\text{The pair of ions that is isoelectronic with } \text{Al}^{3+} \text{ ion is:}$ 2 204 JEE MCQ NEW $\text{Mg}^{2+}, \text{O}^{2-}$, $\text{Na}^+, \text{N}^{2-}$... 1 Edit Delete
20977 $\text{The pair of species that has identical shapes among the following is:}$ $1.\ \text{CF}_4,\ \text{SF}_4$ $2.\ \text{XeF}_2,\ \text{CO}_2$ $3.\ \text{BF}_3,\ \text{PCl}_3$ $4.\ \text{PF}_5,\ \text{IF}_5$ 2 204 JEE MCQ NEW $\text{CF}_4,\ \text{SF}_4$, $\text{XeF}_2,\ \text{CO}_2$... 2 Edit Delete
20976 $\text{In the anion HCOO}^- \text{ the two carbon-oxygen bonds are found to be of equal length. What is the reason for it?}$ 2 204 JEE MCQ NEW $\text{Electronic orbits of the carbon atom are hybridized}$, $\text{The C = O bond is weaker than the C - O bond}$... 3 Edit Delete
20975 $\text{Which of the following compounds has the smallest bond angle?}$ $1.\ \text{SO}_2$ $2.\ \text{H}_2\text{O}$ $3.\ \text{H}_2\text{S}$ $4.\ \text{NH}_3$ 2 204 JEE MCQ NEW $\text{SO}_2$, $\text{H}_2\text{O}$... 3 Edit Delete
20974 $\text{Which of the following sets does not contain isoelectronic species?}$ 2 204 JEE MCQ NEW $\text{BO}_3^{3-}, \text{CO}_3^{2-}, \text{NO}_3^{-}$, $\text{SO}_3^{2-}, \text{CO}_3^{2-}, \text{NO}_3^{-}$... 2 Edit Delete
20973 $\text{The molecular shapes of } \text{SF}_4, \text{CF}_4, \text{ and } \text{XeF}_4 \text{ are:}$ 2 204 JEE MCQ NEW $\text{Different with 1, 0, and 2 lone pairs of electrons on the central atom, respectively}$, $\text{Different with 0, 1, and 2 lone pairs of electrons on the central atom, respectively}$... 1 Edit Delete
20972 $\text{Lattice energy for an ionic compound relies on:}$ 2 204 JEE MCQ NEW $\text{The size and charge of the ion.}$, $\text{Packing of ions only}$... 1 Edit Delete
20971 $\text{The molecules/ions that do not contain unpaired electrons among the following is:}$ 2 204 JEE MCQ NEW $\text{O}_2^{2-}$, $\text{B}_2$... 1 Edit Delete
20970 $\text{The ascending order of polarizing power of the following ions is:}$ $\text{K}^+, \text{Ca}^{2+}, \text{Mg}^{2+}, \text{Be}^{2+}$ 2 204 JEE MCQ NEW $\text{Mg}^{2+} < \text{Be}^{2+} < \text{K}^+ < \text{Ca}^{2+}$, $\text{Be}^{2+} < \text{K}^+ < \text{Ca}^{2+} < \text{Mg}^{2+}$... 3 Edit Delete
20969 $\text{Which of the following compounds exhibits the highest covalent character?}$ 2 204 JEE MCQ NEW $\text{FeCl}_2$, $\text{SnCl}_2$... 3 Edit Delete
20968 $\text{In which of the following pairs the two species are not isostructural?}$ $1.\ \text{PCl}_4^+\ \text{and}\ \text{SiCl}_4$ $2.\ \text{PF}_5\ \text{and}\ \text{BrF}_5$ $3.\ \text{AlF}_6^{3-}\ \text{and}\ \text{SF}_6$ $4.\ \text{CO}_3^{2-}\ \text{and}\ \text{NO}_3^-$ 2 204 JEE MCQ NEW $\text{PCl}_4^+\ \text{and}\ \text{SiCl}_4$, $\text{PF}_5\ \text{and}\ \text{BrF}_5$... 2 Edit Delete
20967 $\text{Arrange the species } \text{Li} , \text{Li}_2 , \text{ and } \text{Li}_2^{+} \text{ in order of increasing stability:}$ $1. \text{Li} < \text{Li}_2^{-} < \text{Li}_2^{+}$ $2. \text{Li}_2 = \text{Li}_2^{+} = \text{Li}_2^{-}$ $3. \text{Li}_2 < \text{Li}_2^{+} < \text{Li}_2^{-}$ $4. \text{Li}_2^{-} < \text{Li}_2^{+} < \text{Li}_2$ 2 204 JEE MCQ NEW $\text{Li} < \text{Li}_2^{-} < \text{Li}_2^{+}$, $\text{Li}_2 = \text{Li}_2^{+} = \text{Li}_2^{-}$... 4 Edit Delete
20966 $\text{Total number of lone pair of electrons in } \text{I}_3^- \text{ ion are:}$ 2 204 JEE MCQ NEW $3$, $6$... 3 Edit Delete
20965 $\text{According to molecular orbital theory, which of the following molecules is not expected to be stable?}$ 2 204 JEE MCQ NEW $\text{He}_2^{2+}$, $\text{He}_2^{+}$... 4 Edit Delete
20964 $\text{During the change of } \text{O}_2 \text{ to } \text{O}_2^{-}, \text{ the incoming electron that goes to the orbital is:}$ 2 204 JEE MCQ NEW $\sigma^*_{2pz}$, $\pi_{2py}$... 4 Edit Delete
20963 $\text{Among the following, the molecule expected to be stabilized by anion formation is: } \text{C}_2, \text{O}_2, \text{NO}, \text{F}_2$ 2 204 JEE MCQ NEW $\text{NO}$, $\text{O}_2$... 3 Edit Delete
20962 $\text{The correct statement about ICl}_5 \text{ and ICl}_4^- \text{ is:}$ 2 204 JEE MCQ NEW $\text{Both are isostructural}$, $\text{ICl}_5 \text{ is square pyramidal and ICl}_4^- \text{ is square planar}$... 2 Edit Delete
20961 $\text{The diamagnetic species that has the shortest bond length among the following is-}$ 2 204 JEE MCQ NEW $\text{N}_2^{2-}$, $\text{O}_2$... 3 Edit Delete
20960 $\text{The ion that has } sp^3d^2 \text{ hybridization for the central atom is:}$ 2 204 JEE MCQ NEW $[\text{ICl}_4]^{-}$, $[\text{ICl}_2]^{-}$... 1 Edit Delete
20959 $\text{The compound that has the largest H--M--H bond angle (M=N, O, S, C), is:}$ 2 204 JEE MCQ NEW $\text{H}_2\text{O}$, $\text{CH}_4$... 2 Edit Delete
20958 $\text{The structure of PCl}_5 \text{ in the solid state is:}$ $1. \text{ Square pyramidal.}$ $2. \text{ Tetrahedral } [\text{PCl}_4]^+ \text{ and octahedral } [\text{PCl}_6]^- $ $3. \text{ Square planar } [\text{PCl}_4] \text{ and octahedral } [\text{PCl}_6]^- $ $4. \text{ Trigonal bipyramidal.}$ 2 204 JEE MCQ NEW $\text{Square pyramidal.}$, $\text{Tetrahedral } [\text{PCl}_4]^+ \text{ and octahedral } [\text{PCl}_6]^-$... 2 Edit Delete
20957 $\text{The molecule in which hybrid MOs involve only one d-orbital of the central atom is:}$ 2 204 JEE MCQ NEW $\text{XeF}_4$, $[\text{Ni(CN)}_4]^{2-}$... 2 Edit Delete
20956 $\text{Of the species, NO, NO}^+, \text{NO}_2^+ \text{ and NO}^-, \text{ the one with minimum bond strength is:}$ 2 204 JEE MCQ NEW $\text{NO}_2^+$, $\text{NO}^+$... 4 Edit Delete
20955 $\text{The shape/structure of } [\text{XeF}_5]^− \text{ and } \text{XeO}_3\text{F}_2, \text{ respectively, are:}$ $1. \text{Pentagonal planar and trigonal bipyramidal}$ $2. \text{Trigonal bipyramidal and pentagonal planar}$ $3. \text{Octahedral and square pyramidal}$ $4. \text{Trigonal bipyramidal and trigonal bipyramidal}$ 2 204 JEE MCQ NEW $\text{Pentagonal planar and trigonal bipyramidal}$, $\text{Trigonal bipyramidal and pentagonal planar}$... 1 Edit Delete
20954 $\text{Match List-I (Molecules) with List-II (Bond order), and mark the appropriate choice}$ $\begin{array}{|c|c|} \hline \text{List-I (Molecule)} & \text{List-II (Bond order)} \\ \hline (a) \ \text{Ne}_2 & (i) \ 1 \\ (b) \ \text{N}_2 & (ii) \ 2 \\ (c) \ \text{F}_2 & (iii) \ 0 \\ (d) \ \text{O}_2 & (iv) \ 3 \\ \hline \end{array}$ $\text{Choose the correct match from the options given below:}$ 2 204 JEE MCQ NEW $(a) \rightarrow (iii), (b) \rightarrow (iv), (c) \rightarrow (i), (d) \rightarrow (ii)$, $(a) \rightarrow (ii), (b) \rightarrow (iv), (c) \rightarrow (iii), (d) \rightarrow (i)$... 1 Edit Delete
20953 $\text{Which pair of oxides are acidic in nature?}$ 2 204 JEE MCQ NEW $\text{B}_2\text{O}_3 , \text{CaO}$, $\text{B}_2\text{O}_3 , \text{SiO}_2$... 2 Edit Delete
20952 $\text{In } \text{CH}_2 = \overset{2}{\text{C}} = \overset{3}{\text{CH}} - \overset{4}{\text{CH}_3} \text{ molecule, the hybridization of carbon 1, 2, 3 and 4 respectively are:}$ 2 204 JEE MCQ NEW $\text{sp}^3, \text{sp}^3, \text{sp}^3, \text{sp}^3$, $\text{sp}^2, \text{sp}^2, \text{sp}^2, \text{sp}^3$... 3 Edit Delete
20951 $\text{The isostructural pairs among the following are:}$ $\text{A. } \text{SO}_4^{2-} \text{ and } \text{CrO}_4^{2-}$ $\text{B. } \text{SiCl}_4 \text{ and } \text{TiCl}_4$ $\text{C. } \text{NH}_3 \text{ and } \text{NO}_3^{-}$ $\text{D. } \text{BCl}_3 \text{ and } \text{BrCl}_3$ 2 204 JEE MCQ NEW $\text{C and D only}$, $\text{A and B only}$... 2 Edit Delete
20950 $\text{According to molecular theory, the species among the following that does not exist is:}$ 2 204 JEE MCQ NEW $\text{He}_2^{+}$, $\text{He}_2^{-}$... 3 Edit Delete
20949 $\text{Identify the correct statement regarding SF}_4:$ 2 204 JEE MCQ NEW $\text{It has one lone pair at the equatorial position with two lone pair-bond pair repulsion at } 90^\circ.$, $\text{It has one lone pair at the axial position with two lone pair-bond pair repulsion at } 90^\circ.$... 1 Edit Delete
20948 $\text{Match the compounds given in Column-I with their respective}$ $\text{hybridisation which is given in Column-II.}$ $\begin{array}{|c|c|} \hline \text{Column-I (Compound)} & \text{Column-II Hybridisation} \\ \hline (i) \ \text{PCl}_5 & (a) \ sp^3d^2 \\ (ii) \ [\text{Pt(CN)}_4]^{2-} & (b) \ sp^3d \\ (iii) \ [\text{Co(NH}_3)_6]^{3+} & (c) \ d^2sp^3 \\ (iv) \ \text{BrF}_5 & (d) \ dsp^2 \\ \hline \end{array}$ $\text{Correct matching is:}$ 2 204 JEE MCQ NEW $\begin{array}{cccc} \text{I} & \text{II} & \text{III} & \text{IV} \\ b & d & c & a \end{array}$, $\begin{array}{cccc} \text{I} & \text{II} & \text{III} & \text{IV} \\ a & b & c & d \end{array}$... 1 Edit Delete
20947 $\text{The set representing the correct order of ionic radius is:}$ 2 203 JEE MCQ NEW $\text{Li}^+ > \text{Be}^{2+} > \text{Na}^+ > \text{Mg}^{2+}$, $\text{Na}^+ > \text{Li}^+ > \text{Mg}^{2+} > \text{Be}^{2+}$... 2 Edit Delete
20946 $\text{The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of Na}^+ \text{ will be -}$ 2 203 JEE MCQ NEW $-10.2 \text{ eV}$, $+2.55 \text{ eV}$... 4 Edit Delete
20945 $\text{The type of oxide formed by the element among Li, Na, Be, Mg, B and Al that has the least atomic radius is:}$ 2 203 JEE MCQ NEW $\text{A}_2\text{O}_3$, $\text{AO}_2$... 1 Edit Delete
20944 $\text{Which of the following electronegativity order is incorrect?}$ 2 203 JEE MCQ NEW $\text{Al} < \text{Mg} < \text{B} < \text{N}$, $\text{Al} < \text{Si} < \text{C} < \text{N}$... 1 Edit Delete
20943 $\text{Match List-I with List-II}$ $\text{List-I}$ \begin{array}{ll} (A) & \text{Al}^{3+} < \text{Mg}^{2+} < \text{Na}^{+} < \text{F}^{-} \\ (B) & \text{B} < \text{C} < \text{O} < \text{N} \\ (C) & \text{B} < \text{Al} < \text{Mg} < \text{K} \\ (D) & \text{Si} < \text{P} < \text{S} < \text{Cl} \end{array}$ $\text{List-II}$ \begin{array}{ll} (\text{I}) & \text{Ionisation Enthalpy} \\ (\text{II}) & \text{Metallic character} \\ (\text{III}) & \text{Electronegativity} \\ (\text{IV}) & \text{Ionic radii} \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 203 JEE MCQ NEW $\text{A-IV, B-I, C-III, D-II}$, $\text{A-II, B-III, C-IV, D-I}$... 3 Edit Delete
20942 $\text{The incorrect decreasing order of atomic radii is:}$ $1. \ Mg > Al > C > O$ $2. \ Al > B > N > F$ $3. \ Be > Mg > Al > Si$ $4. \ Si > P > Cl > F$ 2 203 JEE MCQ NEW $Mg > Al > C > O$, $Al > B > N > F$... 3 Edit Delete
20941 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{The first ionization energy of Pb is greater than that of Sn.}$ $\text{Statement II:}$ \text{The first ionization energy of Ge is greater than that of Si.}$ 2 203 JEE MCQ NEW $\text{Statement I is correct but Statement II is incorrect.}$, $\text{Both Statement I and Statement II are incorrect.}$... 1 Edit Delete
20940 $\text{The increasing order of the atomic radii of the following elements is:}$ $\begin{array}{ccc} (a) & \text{C} & (b) & \text{O} \\ (c) & \text{F} & (d) & \text{Cl} \\ (e) & \text{Br} \end{array}$ 2 203 JEE MCQ NEW $(d) < (c) < (b) < (a) < (e)$, $(a) < (b) < (c) < (d) < (e)$... 4 Edit Delete
20939 $\text{The increasing order of the atomic radii of the following elements is:}$ $\begin{array}{ccc} (a) & \text{C} & (b) & \text{O} \\ (c) & \text{F} & (d) & \text{Cl} \\ (e) & \text{Br} \end{array}$ 2 203 JEE MCQ NEW $(d) < (c) < (b) < (a) < (e)$, $(a) < (b) < (c) < (d) < (e)$... 4 Edit Delete
20938 $\text{The ionic radius of Na}^+ \text{ ion is } 1.02 \, \text{Å.}$ $\text{The ionic radii (in Å) of Mg}^{2+} \text{ and Al}^{3+}, \text{ respectively, are:}$ 2 203 JEE MCQ NEW $0.68 \text{ and } 0.72$, $1.05 \text{ and } 0.99$... 3 Edit Delete
20937 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).}$ $\text{Assertion (A):}$ \text{As one moves from left to right in a period, the metallic character decreases while the non-metallic character increases.} $\text{Reason (R):}$ \text{This trend occurs because ionization enthalpy increases and electron gain enthalpy decreases when moving from left to right in a period.} $\text{In light of the above statements, choose the most appropriate answer from the options given below:}$ 2 203 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{(A) is False but (R) is True.}$... 3 Edit Delete
20936 $\text{What is the correct increasing order of ionic radii for the following ions?}$ 2 203 JEE MCQ NEW $\text{Mg}^{2+} < \text{Na}^+ < \text{F}^- < \text{O}^{2-} < \text{N}^{3-}$, $\text{N}^{3-} < \text{O}^{2-} < \text{F}^- < \text{Na}^+ < \text{Mg}^{2+}$... 1 Edit Delete
20935 $\text{Arrange the following elements in decreasing order of their electron gain enthalpy (magnitude only):}$ $\bullet \ \text{Sulfur} \rightarrow \text{A}$ $\bullet \ \text{Bromine} \rightarrow \text{B}$ $\bullet \ \text{Fluorine} \rightarrow \text{C}$ $\bullet \ \text{Argon} \rightarrow \text{D}$ 2 203 JEE MCQ NEW $\text{A} > \text{B} > \text{C} > \text{D}$, $\text{D} > \text{C} > \text{B} > \text{A}$... 3 Edit Delete
20934 $\text{Choose the option containing all isoelectronic species:}$ 2 203 JEE MCQ NEW $\text{N}^{3-}, \text{O}^{2-}, \text{F}, \text{Na}$, $\text{S}^{2-}, \text{Cl}^{-}, \text{K}^{+}, \text{Ca}^{2+}$... 2 Edit Delete
20933 $\text{Select the correct order of magnitudes of the first electron gain enthalpy from the options provided:}$ 2 203 JEE MCQ NEW $\text{Cl} < \text{F}$, $\text{O} < \text{S}$... 2 Edit Delete
20932 $\text{Mark the correct increasing order of the metallic character of the given below elements:}$ $\text{Si, K, Mg, and Be}$ 2 203 JEE MCQ NEW $\text{Si} < \text{Mg} < \text{Be} < \text{K}$, $\text{Be} < \text{Mg} < \text{Si} < \text{K}$... 3 Edit Delete
20931 $\text{Match the atomic numbers in List I with the corresponding groups in List II:}$ $\begin{array}{|c|c|} \hline \text{List-I (Atomic number)} & \text{List-II (Group)} \\ \hline \text{i.} & 52 & \text{P.} & \text{s} \\ \text{ii.} & 37 & \text{Q.} & \text{p} \\ \text{iii.} & 65 & \text{R.} & \text{f} \\ \text{iv.} & 74 & \text{S.} & \text{d} \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 2 203 JEE MCQ NEW $(\text{i})-\text{Q}, (\text{ii})-\text{P}, (\text{iii})-\text{R}, (\text{iv})-\text{S}$, $(\text{i})-\text{Q}, (\text{ii})-\text{P}, (\text{iii})-\text{S}, (\text{iv})-\text{R}$... 1 Edit Delete
20930 $\text{Consider the elements Mg, Al, S, P, and Si, the correct increasing order of their first ionization enthalpy is:}$ 2 203 JEE MCQ NEW $\text{Mg} < \text{Al} < \text{Si} < \text{S} < \text{P}$, $\text{Al} < \text{Mg} < \text{Si} < \text{S} < \text{P}$... 2 Edit Delete
20929 $\text{A metalloid among the following is:}$ $1.\ \text{Sc}$ $2.\ \text{Pb}$ $3.\ \text{Bi}$ $4.\ \text{Te}$ 2 203 JEE MCQ NEW $\text{Sc}$, $\text{Pb}$... 4 Edit Delete
20928 $\text{Which of the following is a metalloid?}$ 2 203 JEE MCQ NEW $\text{In (Indium)}$, $\text{Te (Tellurium)}$... 2 Edit Delete
20927 $\text{According to the periodic law of elements, the variation in properties of elements is related to their:}$ $1. \text{Atomic masses}$ $2. \text{Nuclear mass}$ $3. \text{Atomic numbers}$ $4. \text{Nuclear neutron-proton number ratio}$ 2 203 JEE MCQ NEW $\text{Atomic masses}$, $\text{Nuclear mass}$... 3 Edit Delete
20926 $\text{Among } \text{Al}_2\text{O}_3, \text{SiO}_2, \text{P}_2\text{O}_3 \text{ and } \text{SO}_2 \text{ the correct order of acid strength is:}$ 2 203 JEE MCQ NEW $\text{SO}_2 < \text{P}_2\text{O}_3 < \text{SiO}_2 < \text{Al}_2\text{O}_3$, $\text{SiO}_2 < \text{SO}_2 < \text{Al}_2\text{O}_3 < \text{P}_2\text{O}_3$... 4 Edit Delete
20925 $\text{The ion having the highest value of ionic radius among the following is:}$ 2 203 JEE MCQ NEW $\text{Li}^+$, $\text{B}^{3+}$... 3 Edit Delete
20924 $\text{In which of the following arrangements the order is not according to the property indicated against it?}$ 2 203 JEE MCQ NEW $\text{Li} < \text{Na} < \text{K} < \text{Rb} : \text{Increasing metallic radius}$, $\text{I} < \text{Br} < \text{F} < \text{Cl} : \text{Increasing electron gain enthalpy (with negative sign)}$... 3 Edit Delete
20923 $\text{The increasing order of the first ionization enthalpies of the elements}$ $\text{B, P, S and F (lowest first) is:}$ 2 203 JEE MCQ NEW $\text{F} < \text{S} < \text{P} < \text{B}$, $\text{P} < \text{S} < \text{B} < \text{F}$... 4 Edit Delete
20922 $\text{The correct sequence of increasing the basic nature of the following oxides is:}$ 2 203 JEE MCQ NEW $\text{Al}_2\text{O}_3 < \text{MgO} < \text{Na}_2\text{O} < \text{K}_2\text{O}$, $\text{MgO} < \text{K}_2\text{O} < \text{Al}_2\text{O}_3 < \text{Na}_2\text{O}$... 1 Edit Delete
20921 $\text{The correct representation of the first ionization enthalpy for}$ $\text{Ca, Ba, S, Se, and Ar in increasing order, among the following, is:}$ 2 203 JEE MCQ NEW $\text{Ba} < \text{Ca} < \text{Se} < \text{S} < \text{Ar}$, $\text{Ca} < \text{Ba} < \text{S} < \text{Se} < \text{Ar}$... 1 Edit Delete
20920 $\text{The ionic radii (in \AA) of } \text{N}^{3-}, \text{O}^{2-} \text{ and } \text{F}^{-} \text{ are respectively:}$ 2 203 JEE MCQ NEW $1.36, 1.40 \text{ and } 1.71$, $1.36, 1.71 \text{ and } 1.40$... 3 Edit Delete
20919 $\text{The element having a greatest difference between its first and second ionization energies, is:}$ 2 203 JEE MCQ NEW $\text{Ca}$, $\text{Sc}$... 3 Edit Delete
20918 $\text{The IUPAC symbol for the element with atomic number 119 would be:}$ 2 203 JEE MCQ NEW $\text{Uue}$, $\text{Une}$... 1 Edit Delete
20917 $\text{The atomic number of Unnilunium is-}$ $1.\ 111$ $2.\ 110$ $3.\ 101$ $4.\ 107$ 2 203 JEE MCQ NEW $111$, $110$... 3 Edit Delete
20916 $\text{The set that contains atomic numbers of only transition elements is:}$ 2 203 JEE MCQ NEW $21, 32, 53, 64$, $9, 17, 34, 38$... 3 Edit Delete
20915 $\text{Consider the following compounds:}$ $\text{BeO, BaO, Be(OH)}_2, \text{Sr(OH)}_2$ $\text{The amphoteric compound(s) are:}$ 2 203 JEE MCQ NEW $\text{BeO, BaO}$, $\text{BaO, Be(OH)}_2$... 3 Edit Delete
20914 $\text{The correct order of electron gain enthalpy is:}$ 2 203 JEE MCQ NEW $\text{S > Se > Te > O}$, $\text{Te > Se > S > O}$... 1 Edit Delete
20913 $\text{Which of the following oxide is basic in nature?}$ 2 203 JEE MCQ NEW $\text{SiO}_2$, $\text{CaO}$... 2 Edit Delete
20912 $\text{The correct electronic configuration of an element that is just above the 4th period and belongs to the 16th group:}$ 2 203 JEE MCQ NEW $4s^23d^{10}4p^4$, $2s^22p^4$... 3 Edit Delete
20911 $\text{The number of oxides among the following that exhibit an amphoteric nature is:}$ $\text{(a) } \text{Na}_2\text{O}$ $\text{(b) } \text{As}_2\text{O}_3$ $\text{(c) } \text{NO}$ $\text{(d) } \text{N}_2\text{O}$ $\text{(e) } \text{Cl}_2\text{O}_7$ 2 203 JEE MCQ NEW $0$, $1$... 2 Edit Delete
20910 $\text{The de Broglie wavelength of an electron in the 4}^{\text{th}} \text{ orbit is:}$ $\text{(where, } a_0 = \text{radius of 1}^{\text{st}} \text{ orbit)}$ 2 202 JEE MCQ NEW $2\pi a_0$, $8\pi a_0$... 2 Edit Delete
20909 $\text{The correct relation between the radius of 3}^{\text{rd}} \text{ and 4}^{\text{th}} \text{ Bohr orbit for H-atom is:}$ 2 202 JEE MCQ NEW $\frac{r_3}{r_4} = \frac{16}{9}$, $\frac{r_4}{r_3} = \frac{9}{16}$... 2 Edit Delete
20908 $\text{Consider the following statements:}$ $\text{Statement I:}$ \text{The number of emitted photoelectrons increases with increase in the frequency of incident light.}$ $\text{Statement II:}$ \text{The kinetic energy of emitted photoelectrons increases with increase in the frequency of incident light.}$ 2 202 JEE MCQ NEW $\text{Statement I is true but Statement II is false.}$, $\text{Statement I is false but Statement II is true.}$... 2 Edit Delete
20907 $\text{Calculate the velocity of the electron in the first orbit of H-atom.}$ $\left(m_e = 9.1 \times 10^{-31} \text{kg}\right)$ 2 202 JEE MCQ NEW $2.18 \times 10^5 \text{ m/s}$, $2.18 \times 10^6 \text{ m/s}$... 2 Edit Delete
20906 $\text{The angular momentum of an electron in an orbit of radius } R \text{ in a hydrogen atom is directly proportional to } \_\_\_.$ 2 202 JEE MCQ NEW $R$, $\frac{1}{R}$... 4 Edit Delete
20905 $\text{The ratio of the shortest wavelengths in the Lyman and Balmer series of the H-atom is:}$ 2 202 JEE MCQ NEW $\frac{1}{4}$, $\frac{4}{1}$... 1 Edit Delete
20904 $\text{The shortest wavelength of the Paschen series for H-atom is:}$ 2 202 JEE MCQ NEW $\frac{9}{R}$, $\frac{16}{R}$... 1 Edit Delete
20903 $\text{Two metals are given:}$ $\text{Metal – 1: Work function} = 4.8 \text{ eV}$ $\text{Metal – 2: Work function} = 2.8 \text{ eV}$ $\text{Photons of wavelength } 350 \text{ nm are incident on both metals separately. Which metal will eject electrons at this wavelength?}$ 2 202 JEE MCQ NEW $\text{Metal-1 only}$, $\text{Metal-2 only}$... 2 Edit Delete
20902 $\text{Consider the following combination of } n, l, \text{ and } m \text{ values.}$ $\text{(i) } n=3; \ l=0; \ m=0$ $\text{(ii) } n=4; \ l=0; \ m=0$ $\text{(iii) } n=3; \ l=1; \ m=0$ $\text{(iv) } n=3; \ l=2; \ m=0$ $\text{The correct order of energy of the corresponding orbitals for multielectron species:}$ 2 202 JEE MCQ NEW $(ii) > (i) > (iv) > (iii)$, $(iv) > (ii) > (iii) > (i)$... 2 Edit Delete
20901 $\text{The ionization energy of a hydrogen atom is } 13.6 \text{ eV. What is the ionization energy of a } \text{Li}^{2+} \text{ ion?}$ 2 202 JEE MCQ NEW $54.4 \text{ eV}$, $122.4 \text{ eV}$... 2 Edit Delete
20900 $\text{An electron in } \text{Be}^{3+} \text{ goes from } n=4 \text{ to } n=2. \text{ The amount of energy released in eV is:}$ $\text{(Ground state energy of H- atom = 13.6 eV)}$ 2 202 JEE MCQ NEW $40.8 \text{ eV}$, $122.4 \text{ eV}$... 1 Edit Delete
20899 $\text{Total number of orbitals that is/are considered as axial orbital(s) is:}$ $p_x, p_y, p_z, d_{xy}, d_{yz}, d_{zx}, d_{x^2-y^2}, d_{z^2}$ 2 202 JEE MCQ NEW $8$, $3$... 4 Edit Delete
20898 $\text{Electrons are emitted in a cathode ray tube with a velocity of 1000 m/s. Select the correct statement among the following is:}$ 2 202 JEE MCQ NEW $\text{The de Broglie wavelength of an electron is 666.67 nm.}$, $\text{The cathode rays travel from the cathode to the anode.}$... 2 Edit Delete
20897 $\text{A hydrogen atom in its ground state absorbs 12.75 eV of energy. The orbital angular momentum of the electron becomes } \frac{nh}{2\pi}. \text{ What is the value of } n?$ 2 202 JEE MCQ NEW $3$, $4$... 2 Edit Delete
20896 $\text{The speed of an electron in the 7th orbit is } 3.6 \times 10^6 \text{ m/s, the speed in 3rd orbit is-}$ 2 202 JEE MCQ NEW $3.6 \times 10^6 \text{ m/s}$, $8.4 \times 10^6 \text{ m/s}$... 2 Edit Delete
20895 $\text{The radius of the second orbit of the } \text{Li}^{2+} \text{ ion is } x. \text{ What will be the radius of the third orbit of the } \text{Be}^{3+} \text{ ion?}$ 2 202 JEE MCQ NEW $\frac{27x}{16}$, $\frac{16x}{27}$... 1 Edit Delete
20894 $\text{The shortest wavelength in the Lyman series of H-atom is } \lambda. \text{ and the longest wavelength in the Balmer series of He}^+ \text{ is } \frac{x\lambda}{5}. \text{ The value of } x \text{ is:}$ 2 202 JEE MCQ NEW $7$, $11$... 4 Edit Delete
20893 $\text{With a ground state energy of } -13.6 \text{ eV for a hydrogen atom, what would be the energy in the second excited state?}$ 2 202 JEE MCQ NEW $-6.8 \text{ eV}$, $-3.4 \text{ eV}$... 3 Edit Delete
20892 $\text{According to Bohr's atomic theory:}$ $\text{(A) Kinetic energy of the electron is } \propto \frac{Z^2}{n^2}$ $\text{(B) The product of velocity (v) of electron and principal quantum number (n), } vn' \propto Z^2.$ $\text{(C) Frequency of revolution of the electron in an orbit is } \propto \frac{Z^3}{n^3}.$ $\text{(D) Coulombic force of attraction on the electron is } \propto \frac{Z^3}{n^4}.$ $\text{Choose the most appropriate answer from the options given below:}$ 2 202 JEE MCQ NEW $(\text{C}) \text{ Only}$, $(\text{A}) \text{ Only}$... 4 Edit Delete
20891 $\text{Given below are two statements:}$ $\text{Statement I:}$ \quad n_1 \rightarrow n_2 \quad h\nu = (E_2 - E_1) \text{ absorbs a photon.}$ $\text{Statement II:}$ \quad n_2 \rightarrow n_1 \quad h\nu = (E_2 - E_1) \text{ = emitted a photon.}$ $\text{In the light of the above statements, choose the correct answer from the option given below:}$ 2 202 JEE MCQ NEW $\text{Both Statement I and Statement II are true.}$, $\text{Both Statement I and Statement II are false.}$... 1 Edit Delete
20890 $\text{How many sets of quantum numbers are possible?}$ $\begin{array}{|c|c|c|c|} \hline & n & l & m \\ \hline (a) & 2 & 2 & 1 \\ (b) & 3 & 2 & -2 \\ (c) & 3 & 2 & -1 \\ (d) & 2 & 1 & -1 \\ \hline \end{array}$ 2 202 JEE MCQ NEW $0$, $1$... 4 Edit Delete
20889 $\text{Uncertainty in the position of a moving particle is } 10^{-7} \text{ m and uncertainty velocity is } 2.4 \times 10^{-24} \text{ m/sec, then the mass of a particle is } [X] \times 10^{-5} \text{ kg. The value of } X \text{ is:}$ $\text{[Report your answer to the nearest integer]}$ 2 202 JEE MCQ NEW 26, 19... 4 Edit Delete
20888 $\text{The numbers of angular and radial nodes in a 4d orbital are respectively:}$ $\text{1. } 2, 1$ $\text{2. } 1, 2$ $\text{3. } 3, 1$ $\text{4. } 1, 3$ 2 202 JEE MCQ NEW $2, 1$, $1, 2$... 1 Edit Delete
20887 $\text{Consider the ground state of Cr atom (Z=24). The numbers of electrons with the azimuthal quantum numbers, } l=1 \text{ and } 2 \text{ are, respectively:}$ 2 202 JEE MCQ NEW $12 \text{ and } 4$, $12 \text{ and } 5$... 2 Edit Delete
20886 $\text{According to Bohr's theory, what is the angular momentum of an electron located in the fifth orbit?}$ 2 202 JEE MCQ NEW $25 \frac{h}{\pi}$, $1.0 \frac{h}{\pi}$... 4 Edit Delete
20885 $\text{The wavelength (in nanometer) associated with a proton moving at } 1.0 \times 10^3 \text{ ms}^{-1} \text{ (Mass of proton = } 1.67 \times 10^{-27} \text{ kg and } h = 6.63 \times 10^{-34} \text{ Js) is:}$ 2 202 JEE MCQ NEW $0.032 \text{ nm}$, $0.40 \text{ nm}$... 2 Edit Delete
20884 $\text{Given that an electron in an atom moves at } 600 \text{ m/s with an accuracy of } 0.005\%, \text{ what is the level of certainty in locating its position?}$ $\text{(h = } 6.6 \times 10^{-34} \text{ kg m}^2 \text{ s}^{-1}, \text{ mass of electron, } e_m = 9.1 \times 10^{-31} \text{ kg)}:$ 2 202 JEE MCQ NEW $1.52 \times 10^{-4} \text{ m}$, $5.10 \times 10^{-3} \text{ m}$... 3 Edit Delete
20883 $\text{The energy required to break one mole of Cl--Cl bonds in Cl}_2 \text{ is 242 kJmol}^{-1}. \text{ The wavelength of light capable of breaking a single Cl--Cl bond is:}$ $1.\ 494\ \text{nm}$ $2.\ 594\ \text{nm}$ $3.\ 640\ \text{nm}$ $4.\ 700\ \text{nm}$ 2 202 JEE MCQ NEW $494\ \text{nm}$, $594\ \text{nm}$... 1 Edit Delete
20882 $\text{A gas absorbs a photon of } 355 \text{ nm and emits at two wavelengths. If one of the emissions is at } 680 \text{ nm, the other is at:}$ 2 202 JEE MCQ NEW $1035 \text{ nm}$, $325 \text{ nm}$... 3 Edit Delete
20881 $\text{The electrons identified by quantum numbers } n \text{ and } l \text{ can be placed in order of increasing energy as:}$ $\text{a. } n = 4, l = 1$ $\text{b. } n = 4, l = 0$ $\text{c. } n = 3, l = 2$ $\text{d. } n = 3, l = 1$ 2 202 JEE MCQ NEW $(d) < (b) < (c) < (a)$, $(b) < (d) < (a) < (c)$... 1 Edit Delete
20880 $\text{The energy of an electron is given by } E = -2.178 \times 10^{-18} \text{ J} \left( \frac{z^2}{n^2} \right)$ $\text{Wavelength of light required to excite an electron in a hydrogen atom from level } n = 1 \text{ to } n = 2 \text{ will be:}$ $(h = 6.62 \times 10^{-34} \text{ Js and } c = 3.0 \times 10^8 \text{ ms}^{-1})$ 2 202 JEE MCQ NEW $6.500 \times 10^{-7} \text{ m}$, $8.500 \times 10^{-7} \text{ m}$... 3 Edit Delete
20879 $\text{The correct set of four quantum numbers for the valence electrons of rubidium atom (Z = 37) is -}$ 2 202 JEE MCQ NEW $5, 1, 0 + \frac{1}{2}$, $5, 1, 1 + \frac{1}{2}$... 4 Edit Delete
20878 $\text{The radius of the second Bohr orbit for hydrogen atom is:}$ $\text{(Planck's Const. } h = 6.6262 \times 10^{-34} \text{ Js; mass of electron } = 9.1091 \times 10^{-31} \text{ kg;}$ $\text{charge of electron } e = 1.60210 \times 10^{-19} \text{ C; permittivity of vacuum } \varepsilon_0 = 8.854185 \times 10^{-12} \text{ kg}^{-1}\text{m}^{-3}\text{A}^2)}$ 2 202 JEE MCQ NEW $0.529 \text{ \AA}$, $2.12 \text{ \AA}$... 2 Edit Delete
20877 $\text{The graph between } |\psi|^2 \text{ and } r \text{ (radial distance) is shown below. This represents:}$ 2 202 JEE MCQ NEW $\text{3s orbital}$, $\text{2s orbital}$... 2 Edit Delete
20876 $\text{The quantum number of four electrons are given below:}$ $\begin{array}{l} \text{I. } n = 4, \ l = 2, \ m_l = -2, \ m_s = -\frac{1}{2} \\ \text{II. } n = 3, \ l = 2, \ m_l = 1, \ m_s = +\frac{1}{2} \\ \text{III. } n = 4, \ l = 1, \ m_l = 0, \ m_s = +\frac{1}{2} \\ \text{IV. } n = 3, \ l = 1, \ m_l = 1, \ m_s = -\frac{1}{2} \end{array}$ $\text{The correct order of their increasing energies will be:}$ 2 202 JEE MCQ NEW $\text{I < III < II < IV}$, $\text{IV < II < III < I}$... 2 Edit Delete
20875 $\text{A proton and a } \text{Li}^{3+} \text{ nucleus are accelerated by the same potential. If } \lambda_{\text{Li}^{3+}} \text{ and } \lambda_p \text{ denote the de-Broglie wavelengths of } \text{Li}^{3+} \text{ and proton respectively, then the value of } \frac{\lambda_{\text{Li}^{3+}}}{\lambda_p} \text{ is } x \times 10^{-1}. \text{ The value of } x \text{ is:}$ $\text{(Rounded off to the nearest integer)}$ $\text{(Mass of } \text{Li}^{3+} = 8.3 \text{ the mass of a proton)}$ 2 202 JEE MCQ NEW 4, 6... 3 Edit Delete
20874 $\text{The plots of radial distribution functions for various orbitals of hydrogen atom against 'r' are given below:}$ $\text{a.}$ $\text{b.}$ $\text{c.}$ $\text{d.}$ $\text{The correct plot for 3s orbital is:}$ 2 202 JEE MCQ NEW $(\text{B})$, $(\text{A})$... 3 Edit Delete
20873 $\text{Using the following statements, identify the correct set of statements:}$ $\text{(i) } n \text{ (principal quantum number) can have values } 1, 2, 3, 4, \ldots$ $\text{(ii) The number of orbitals for a given value of } l \text{ is } (2l+1).$ $\text{(iii) The value of spin quantum numbers is always } \pm \frac{1}{2}.$ $\text{(iv) For } l=5, \text{ the total number of orbitals is } 9.$ 2 202 JEE MCQ NEW $(i), (ii), (iii)$, $(i), (ii), (iv)$... 1 Edit Delete
20872 $\text{Given that the threshold frequency of the metal is } 1.4 \times 10^{15} \text{ sec}^{-1}, \text{ what is the minimum energy required to eject a photoelectron from the metal?}$ $\text{[given: } h = 6.6 \times 10^{-34} \text{ J sec]}$ 2 202 JEE MCQ NEW $9.24 \times 10^{-19} \text{ J}$, $9.24 \times 10^{-18} \text{ J}$... 1 Edit Delete
20871 $\text{The total energy of 1 mol of photons in J/mol having } \lambda = 600 \text{ nm is:}$ $\text{Given: } h = 6.62 \times 10^{-34} \text{ J sec, } c = 3 \times 10^8 \text{ m s}^{-1}$ 2 202 JEE MCQ NEW $2 \times 10^5 \text{ J/mol}$, $6.64 \times 10^8 \text{ J/mol}$... 1 Edit Delete
20870 $\text{The set of a quantum number that represents degenerate orbitals is:}$ $\begin{array}{l} \text{a. } n = 3, \ell = 2, m = 0, s = -\frac{1}{2} \& n = 3, \ell = 2, m = -1, s = +\frac{1}{2} \\ \text{b. } n = 2, \ell = 1, m = 1, s = -\frac{1}{2} \& n = 3, \ell = 1, m = 1, s = +\frac{1}{2} \\ \text{c. } n = 4, \ell = 2, m = -1, s = \frac{1}{2} \& n = 3, \ell = 2, m = -1, s = \frac{1}{2} \end{array}$ 2 202 JEE MCQ NEW $\text{a.}$, $\text{b.}$... 1 Edit Delete
20869 $\text{Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve 10 ppm of iron in 100 kg of wheat is:}$ $\text{(Atomic weight: Fe = 55.85; S = 32.00; O = 16.00)}$ 2 201 JEE MCQ NEW $3 \text{ gram}$, $12 \text{ gram}$... 3 Edit Delete
20868 $\text{If the density of } \text{NaOH solution is } 1.2 \text{ g cm}^{-3}, \text{ find the molality of this solution: (Round off to the nearest integer)}$ $\text{[Given: Atomic masses:}$ $\text{Na : 23.0 u; O : 16.0 u; H : 1.0 u]}$ $\text{[Density of } \text{H}_2\text{O} : 1.0 \text{ g cm}^{-3}]}$ 2 201 JEE MCQ NEW $12 \text{ m}$, $18 \text{ m}$... 3 Edit Delete
20867 $\text{The number of significant figures in } 0.00340 \text{ is:}$ 2 201 JEE MCQ NEW $5$, $2$... 4 Edit Delete
20866 $\text{When 10 mL of an aqueous solution of } \text{Fe}^{2+} \text{ ions was titrated in the presence of dil } \text{H}_2\text{SO}_4 \text{ using diphenylamine indicator, 15 mL of 0.02 M solution of } \text{K}_2\text{Cr}_2\text{O}_7 \text{ was required to get the end point. The molarity of the solution containing } \text{Fe}^{2+} \text{ ions is } x \times 10^{-2} \text{M. The value of } x \text{ is: (Nearest integer)}$ 2 201 JEE MCQ NEW $18$, $34$... 1 Edit Delete
20865 $\text{If the concentration of glucose (}\text{C}_6\text{H}_{12}\text{O}_6\text{) in blood is } 0.72 \text{ g L}^{-1}$ $\text{the molarity of glucose in blood is } \underline{\hspace{1cm}} \times 10^{-3} \text{ M. (Nearest integer)}$ $\text{(Given : Atomic mass of } \text{C} = 12, \text{H} = 1, \text{O} = 16\text{u)}$ 2 201 JEE MCQ NEW 4, 6... 1 Edit Delete
20864 $\text{The number of atoms in } 8 \text{ g of sodium is } x \times 10^{23}. \text{ The value of } x \text{ is (Nearest integer):}$ $\text{[Given: } N_A = 6.02 \times 10^{23} \text{ mol}^{-1}, \text{ Atomic mass of Na } = 23.0 \text{ u]}$ 2 201 JEE MCQ NEW $2.08$, $5.03$... 1 Edit Delete
20863 $\text{Consider the above reaction, the limiting reagent of the reaction and number of moles of NH}_3 \text{ formed respectively are:}$ 2 201 JEE MCQ NEW $\text{H}_2, 1.42 \text{ moles}$, $\text{H}_2, 0.71 \text{ moles}$... 3 Edit Delete
20862 $\text{Using the rules for significant figures, the correct answer for the expression}$ $\frac{0.02858 \times 0.112}{0.5702}$ $\text{will be:}$ 2 201 JEE MCQ NEW $0.005613$, $0.00561$... 2 Edit Delete
20861 $\text{A commercially sold conc. HCl is 35\% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is:}$ $\text{(Atomic mass: Cl = 35.5 amu, H = 1 amu)}$ 2 201 JEE MCQ NEW $10.2 \text{ M}$, $12.5 \text{ M}$... 3 Edit Delete
20860 $\text{The neutralization occurs when } 10 \text{ mL of } 0.1 \text{ M acid 'A' is allowed to react with } 30 \text{ mL of } 0.05 \text{ M base M(OH)}_2. \text{ The basicity of the acid 'A' is:}$ $\text{(M is a metal)}$ 2 201 JEE MCQ NEW $1$, $2$... 3 Edit Delete
20859 $\text{A commercially sold conc. HCl is 35\% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is:}$ $\text{(Atomic mass: Cl = 35.5 amu, H = 1 amu)}$ 2 201 JEE MCQ NEW $10.2 \text{ M}$, $12.5 \text{ M}$... 3 Edit Delete
20858 85 2 201 JEE MCQ NEW 1, 2... 1 Edit Delete
20857 $\text{The moles of methane required to produce 81 g of water after complete combustion is } A \times 10^{-2} \text{ mol. The value of } A \text{ is: [nearest integer]}$ 2 201 JEE MCQ NEW $240$, $225$... 2 Edit Delete
20856 $\text{CNG is an important transportation fuel. When 100 g CNG is mixed with 208 g oxygen in vehicles, it leads to the formation of } \text{CO}_2 \text{ and } \text{H}_2\text{O and produces a large quality of heat during this combustion, then the amount of carbon dioxide, produced in grams is- [nearest integer]}$ $[\text{Assume CNG to be methane}]$ 2 201 JEE MCQ NEW $148 \text{ g}$, $157 \text{ g}$... 3 Edit Delete
20855 $2.8 \times 10^{-3} \text{ mol of CO}_2 \text{ is left after removing } 10^{21} \text{ molecules from its } x \text{ mg sample. The mass of CO}_2 \text{ taken initially is:}$ $\text{(Given: } N_A = 6.02 \times 10^{23} \text{ mol}^{-1})$ 2 201 JEE MCQ NEW $196.2 \text{ mg}$, $98.3 \text{ mg}$... 1 Edit Delete
20854 $\text{Concentrated nitric acid is labelled as } 75\% \text{ by mass. The volume in mL of the solution which contains } 30 \text{ g of nitric acid is:}$ $\text{Given: The density of nitric acid solution is } 1.25 \text{ g/mL}$ 2 201 JEE MCQ NEW $45$, $55$... 3 Edit Delete
20853 $\text{A compound consists of } 54.2\% \text{ carbon (C), } 9.2\% \text{ hydrogen (H), and } 36.6\% \text{ oxygen (O) by mass. The molar mass of the compound is } 132 \text{ g/mol.}$ $\text{Determine the molecular formula of the compound.}$ $\text{(Given -Relative atomic masses: C = 12, H = 1, O = 16)}$ 2 201 JEE MCQ NEW $\text{C}_4\text{H}_9\text{O}_3$, $\text{C}_6\text{H}_{12}\text{O}_6$... 3 Edit Delete
20852 $\text{NaClO}_3 \text{ is used, even in spacecrafts, to produce } \text{O}_2 . \text{ The daily consumption of pure } \text{O}_2 \text{ by a person is } 492 \text{ L at } 1 \text{ atm, } 300 \text{ K. How much amount of NaClO}_3 , \text{ in grams, is required to produce } \text{O}_2 \text{ for the daily consumption of a person at } 1 \text{ atm, } 300 \text{ K?}$ $\text{NaClO}_3(\text{s}) + \text{Fe(s)} \rightarrow \text{O}_2(\text{g}) + \text{NaCl(s)} + \text{FeO(s)}$ $R = 0.082 \text{ L atm mol}^{-1} \text{ K}^{-1}$ 2 201 JEE MCQ NEW $2130 \text{ gm}$, $106.5 \text{ gm}$... 1 Edit Delete
20851 $\text{The volume in mL of } 0.125 \text{ M AgNO}_3 \text{ required to quantitatively}$ $\text{precipitate chloride ions in } 0.3 \text{ g of } [\text{Co(NH}_3\text{)}_6] \text{Cl}_3 \text{ is:}$ $\text{Molecular Mass of } [\text{Co(NH}_3\text{)}_6] \text{Cl}_3 = 267.46 \text{ g/mol}$ $\text{and } \text{AgNO}_3 = 169.87 \text{ g/mol}$ 2 201 JEE MCQ NEW 12.36, 26.92... 2 Edit Delete
20850 $\text{When } 35 \text{ mL of } 0.15 \text{ M lead nitrate solution is mixed with } 20 \text{ mL of } 0.12 \text{ M chromic sulphate solution, } x \times 10^{-5} \text{ moles of lead sulfate precipitate out. Calculate the value of } x. \text{ (Round off to the Nearest Integer)}$ 2 201 JEE MCQ NEW $525$, $124$... 1 Edit Delete
20849 $\text{If the number of chlorine atoms in } 20 \text{ mL of chlorine gas at STP is } x \times 10^{21}. \text{ Find the value of } x:$ $\text{[Note: Assume chlorine is an ideal gas at STP]}$ $\text{[Given: } R = 0.083 \text{ L bar mol}^{-1} \text{ K}^{-1}, N_A = 6.023 \times 10^{23}]$ 2 201 JEE MCQ NEW 1.0755, 2.3456... 1 Edit Delete
20848 $\text{Consider the complete combustion of butane, the amount of butane utilized to produce } 72.0 \text{ g of water is} \ldots \times 10^{-1} \text{ g. (in nearest integer)}$ 2 201 JEE MCQ NEW $464$, $345$... 1 Edit Delete
20847 $\text{Methylation of 10 g of benzene gave 9.2 g of toluene.}$ $\text{Calculate the percentage yield of toluene (Nearest integer).}$ 2 201 JEE MCQ NEW $52\%$, $78\%$... 2 Edit Delete
20846 $\text{If 4 g equimolar mixture of NaOH and Na}_2\text{CO}_3 \text{ contains } x \text{ g of NaOH and } y \text{ g of Na}_2\text{CO}_3, \text{ then find the value of } x \text{ in grams:}$ 2 201 JEE MCQ NEW $2.562$, $9.354$... 3 Edit Delete
20845 $250 \text{ mL of } 0.5 \text{ M NaOH was added to } 500 \text{ mL of } 1 \text{ M HCl.}$ $\text{The number of unreacted HCl molecules in the solution after complete reaction is } x \times 10^{21}. \text{ Find the value of } x \text{ (Nearest integer).}$ $\left( N_A = 6.022 \times 10^{23} \right)$ 2 201 JEE MCQ NEW 256, 465... 3 Edit Delete
20844 $\text{Consider the reaction}$ $4\text{HNO}_3(\text{l}) + 3\text{KCl}(\text{s}) \rightarrow \text{Cl}_2(\text{g}) + \text{NOCl}(\text{g}) + 2\text{H}_2\text{O}(\text{g}) + 3\text{KNO}_3(\text{s})$ $\text{The amount of HNO}_3 \text{ required to produce 110.0 g of KNO}_3 \text{ is:}$ $\text{(Given: Atomic masses of H, O, N and K are 1, 16, 14 and 39 respectively).}$ 2 201 JEE MCQ NEW $32.2 \text{ g}$, $69.4 \text{ g}$... 3 Edit Delete
20843 70 2 201 JEE MCQ NEW 1, 2... 1 Edit Delete
20842 $\text{Haemoglobin contains } 0.34\% \text{ of iron by mass. The number of Fe atoms in } 3.3 \text{ g of haemoglobin is:}$ $\left( \text{Given : Atomic mass of Fe is } 56u, N_A = 6.022 \times 10^{23} \text{ mol}^{-1} \right)$ 2 201 JEE MCQ NEW $1.21 \times 10^5$, $12.0 \times 10^{16}$... 3 Edit Delete
20841 $\text{Compound A contains 8.7\% Hydrogen, 74\% Carbon and 17.3\% Nitrogen. The molecular formula of the compound is:}$ $\text{(Given: Atomic masses of C, H and N are 12, 1 and 14 amu respectively. The molar mass of the compound A is 162 g mol}^{-1})$ 2 201 JEE MCQ NEW $\text{C}_4\text{H}_6\text{N}_2$, $\text{C}_2\text{H}_3\text{N}$... 4 Edit Delete
20840 $\text{Two elements A and B which form 0.15 moles of A}_2\text{B and AB}_3 \text{ type compounds. If both A}_2\text{B and AB}_3 \text{ weigh equally, then the atomic weight of A is how many times that of B?}$ 2 201 JEE MCQ NEW $8 \text{ times}$, $5 \text{ times}$... 4 Edit Delete
20839 $120 \text{ g of an organic compound that contains only carbon and hydrogen gives } 330 \text{ g of } \text{CO}_2 \text{ and } 270 \text{ g of water on complete combustion. The percentage of carbon and hydrogen, respectively are:}$ 2 201 JEE MCQ NEW $25 \text{ and } 75$, $40 \text{ and } 60$... 4 Edit Delete
20838 $\text{Two elements A and B which form } 0.15 \text{ moles of } \text{A}_2\text{B} \text{ and } \text{AB}_3 \text{ type compounds.}$ $\text{If both } \text{A}_2\text{B} \text{ and } \text{AB}_3 \text{ weigh equally, then the atomic weight of A is how many times that of B?}$ 2 201 JEE MCQ NEW $8 \text{ times}$, $5 \text{ times}$... 4 Edit Delete
20837 $\text{The neutralization occurs when } 10 \text{ mL of } 0.1\text{M acid 'A' is allowed to react with } 30 \text{ mL of } 0.05 \text{ M base } \text{M(OH)}_2. \text{ The basicity of the acid 'A' is:}$ $\text{(M is a metal)}$ 2 201 JEE MCQ NEW $1$, $2$... 3 Edit Delete
20836 $\text{For a rocket running on fuel (C}_{15}\text{H}_{30}\text{) and liquid oxygen, how much oxygen is required, and}$ $\text{how much CO}_{2}\text{ is released for every liter of fuel, respectively? (Given:}$ $\text{density of the fuel is 0.756 g/mL))}$ 2 201 JEE MCQ NEW $1188 \text{ g and } 1296 \text{ g}$, $2376 \text{ g and } 2592 \text{ g}$... 3 Edit Delete
20835 $\text{If 84g of NaOH (aq) is present in a 3 molar solution, find volume of solution (in mL).}$ $\text{1. 800}$ $\text{2. 700}$ $\text{3. 400}$ $\text{4. 500}$ 2 201 JEE MCQ NEW $800$, $700$... 2 Edit Delete
20834 $\text{The quantity that changes with temperature:}$ 2 201 JEE MCQ NEW $\text{Mole fraction}$, $\text{Mass percentage}$... 3 Edit Delete
20833 $\text{Calculate mass of } \text{CH}_4 \text{ consumed for the formation of } 22 \text{ g } \text{CO}_2.$ $\text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O}$ 2 201 JEE MCQ NEW $8$, $1$... 1 Edit Delete
20832 $\text{Find out molality of } 0.8 \text{ M } \text{H}_2\text{SO}_4 \text{ solution having density of solution equal to } 1.02 \text{ gm/ml (Nearest integer)}$ 2 201 JEE MCQ NEW $0$, $1$... 2 Edit Delete
20831 $50 \text{ ml of } 0.5 \text{ M oxalic acid is completely Neutralised by } 25 \text{ ml of NaOH solution.}$ $\text{Calculate the amount of NaOH (in gm) present in } 25 \text{ ml of given NaOH solution.}$ $1. \ 5$ $2. \ 2$ $3. \ 6$ $4. \ 9$ 2 201 JEE MCQ NEW $5$, $2$... 2 Edit Delete
20830 $250 \text{ mL solution of } \text{CH}_3\text{COONa of molarity } 0.35 \text{ M is prepared.}$ $\text{What is the mass of } \text{CH}_3\text{COONa required in grams? (Nearest integer)}$ 2 201 JEE MCQ NEW $\text{Nine (9)}$, $\text{Seven (7)}$... 2 Edit Delete
20829 $\text{The number of atoms in a silver plate having area } 0.05 \text{ cm}^2 \text{ and thickness } 0.05 \text{ cm is } x \times 10^{19}. \text{ The value of } x \text{ is:}$ $\text{(Density of silver is } 7.9 \text{ g/cm}^3)$ 2 201 JEE MCQ NEW $88$, $90$... 3 Edit Delete
20828 $C$ \text{ is added to a solution of } $A$ \text{ and } $B$. \text{ Find mole fraction of } $C$. 2 201 JEE MCQ NEW $\frac{n_C}{n_A + n_B + n_C}$, $\frac{n_C}{n_A \cdot n_B + n_C}$... 1 Edit Delete
20827 $\text{Moles of } \text{CH}_4 \text{ required for the formation of 22 gm of } \text{CO}_2 \text{ is }$ $m \times 10^{-2}.$ $\text{The value of } m \text{ is:}$ 2 201 JEE MCQ NEW $50$, $67$... 1 Edit Delete
20826 $\text{Find out moles of precipitate product formed when } 72 \text{ moles of } \text{PbCl}_2 \text{ reacts with } 50 \text{ moles of } (\text{NH}_4)_2\text{SO}_4.$ 2 201 JEE MCQ NEW $69$, $50$... 2 Edit Delete
20825 $\text{Calculate the molality of 500 mL solution of } \text{CuSO}_4 \text{ having density of } 1.25 \text{ g mL}^{-1} \text{ and having molarity } 2 \times 10^{-1} \text{ M at } 32^\circ \text{C.}$ $\text{What is the value of } x \text{ if the molality calculated is } x \times 10^{-2} \text{ molal?}$ 2 201 JEE MCQ NEW $16$, $19$... 1 Edit Delete
20824 $\text{Molality of aqueous solution of urea is } 4.44 \text{ m. Then mole fraction of urea is } x \times 10^{-3}. \text{ The value of } x \text{ is:}$ 2 201 JEE MCQ NEW $67$, $74$... 2 Edit Delete
20823 $\text{Find the mass (in g) of } \text{O}_2 \text{ required for the complete combustion of } 900 \text{ g glucose.}$ $1. \ 960$ $2. \ 800$ $3. \ 500$ $4. \ 780$ 2 201 JEE MCQ NEW $960$, $800$... 1 Edit Delete
20822 $x \text{ g of ethylamine on reaction with } \text{NaNO}_2 \text{ and HCl, produces } 2.24 \text{ L of } \text{N}_2(g) \text{ at NTP. The value of } 2x \text{ will be:}$ $1. \ 8$ $2. \ 6$ $3. \ 0$ $4. \ 9$ 2 201 JEE MCQ NEW $8$, $6$... 4 Edit Delete
20821 $\text{Calculate the molarity of NaCl solution, if 5.85 g of NaCl is dissolved in 500 ml of solution.}$ 2 201 JEE MCQ NEW $0.1 \text{ M}$, $0.2 \text{ M}$... 2 Edit Delete
20820 $\text{We are provided with the graph depicting the relationship between}$ $\text{pressure (P) and temperature (T).}$ $\rho = \text{density}$ 2 201 JEE MCQ NEW $\rho_1 > \rho_2 > \rho_3$, $\rho_1 < \rho_2 < \rho_3$... 1 Edit Delete
20819 $\text{Which of the following statements is incorrect?}$ 2 201 JEE MCQ NEW $\text{In a homogeneous mixture, the composition is uniform.}$, $\text{Compounds are formed when atoms of different elements combine together in any ratio.}$... 2 Edit Delete
20818 $\text{If } \text{C} = 42.1\%, \text{H} = 6.4\%, \text{O} = 52.5\% \text{ and molar mass is } 342 \text{ g/mol, then the molecular formula of that compound is:}$ 2 201 JEE MCQ NEW $\text{C}_{11}\text{H}_{22}\text{O}_{12}$, $\text{C}_{12}\text{H}_{22}\text{O}_{11}$... 2 Edit Delete
20817 $\text{Consider the following combustion reaction:}$ $\text{CH}_4 + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O}$ $\text{How many moles of methane (CH}_4\text{) will be required for the formation of 11 g of carbon dioxide (CO}_2\text{)?}$ 2 201 JEE MCQ NEW 0.25, 0.62... 1 Edit Delete
20816 $\text{For the given reaction}$ $\text{C} + \text{O}_2 \rightarrow \text{CO}_2(g)$ $\text{12 gm of C is reacted with 48 gm of O}_2 \text{ to give CO}_2.$ $\text{If volume of CO}_2 \text{ gas produced at STP is } t \text{ litres.}$ $\text{The value of } 2t \text{ is:}$ $\text{(Given: Molar volume at STP = 22.4 L/mol)}$ 2 201 JEE MCQ NEW $50$, $42$... 3 Edit Delete
20815 $\text{For a given hydrocarbon, 11 moles of } \text{O}_2 \text{ is used and produces 4 moles of } \text{H}_2\text{O. The formula of hydrocarbon is:}$ 2 201 JEE MCQ NEW $\text{C}_{11}\text{H}_8$, $\text{C}_9\text{H}_8$... 2 Edit Delete
20814 $\text{Consider a mixture of } \text{CH}_4 \text{ and } \text{C}_2\text{H}_4 \text{ having a volume of } 16.8 \text{ L at } 273 \text{ K and } 1 \text{ atm. It undergoes combustion to form } \text{CO}_2 \text{ with a total volume of } 28 \text{ L at the same temperature and pressure.}$ $\text{If the enthalpy of combustion of } \text{CH}_4 \text{ is } -900 \text{ kJ/mol and enthalpy of combustion of } \text{C}_2\text{H}_4 \text{ is } -1400 \text{ kJ/mol, then the magnitude of heat released on combustion of the given mixture in kJ is-}$ 2 201 JEE MCQ NEW $875 \text{ kJ}$, $925 \text{ kJ}$... 2 Edit Delete
20813 $\text{The mass ratio of ethylene glycol (62 g/mol) required to make } (500 \text{ ml, } 0.25 \text{ M}) \text{ and } (250 \text{ ml, } 0.25 \text{ M}) \text{ solutions is:}$ 2 201 JEE MCQ NEW $1:1$, $1:2$... 3 Edit Delete
20812 $\text{A hydrocarbon has a molar mass of } 84 \text{ g/mol and contains } 85.8\% \text{ carbon by mass. How many hydrogen atoms are present in one molecule of this hydrocarbon?}$ 2 201 JEE MCQ NEW $8$, $10$... 3 Edit Delete
20811 $\text{Calculate the volume of water required to dilute 5 g of NaOH to a 0.1 M solution.}$ 2 201 JEE MCQ NEW $180 \text{ mL}$, $130 \text{ mL}$... 1 Edit Delete
20810 $\text{The mass percentage of nitrogen in uracil is:}$ 2 201 JEE MCQ NEW $30\%$, $25\%$... 2 Edit Delete
20809 $\text{The number of atoms in } 560 \text{ g of Fe (atomic mass } 56 \text{ g mol}^{-1}) \text{ is:}$ 2 201 JEE MCQ NEW $\text{Twice that of } 70 \text{ g N}$, $\text{Half that of } 20 \text{ g H}$... 3 Edit Delete
20808 $\text{Which of the following concentration factor is affected by a change in temperature?}$ $1. \text{Molarity}$ $2. \text{Molality}$ $3. \text{Mole fraction}$ $4. \text{Weight fraction}$ 2 201 JEE MCQ NEW $\text{Molarity}$, $\text{Molality}$... 1 Edit Delete
20807 $1.86 \text{ g of aniline completely reacts to form acetanilide.}$ $10\% \text{ of the product is lost during purification.}$ $\text{The amount of acetanilide obtained after purification (in g) is} \; \_\_\_\_ \times 10^{-2}.$ 2 201 JEE MCQ NEW 248, 243... 2 Edit Delete
20806 $\text{The formula of a gaseous hydrocarbon which requires 6 times its own volume of } \text{O}_2 \text{ for complete oxidation and produces 4 times its own volume of } \text{CO}_2 \text{ is } \text{C}_x\text{H}_y. \text{ The value of } y \text{ is:}$ $1.\ 6$ $2.\ 8$ $3.\ 4$ $4.\ 10$ 2 201 JEE MCQ NEW $6$, $8$... 2 Edit Delete
20805 $ ext{C}(s) + ext{O}_2(g) ightarrow ext{CO}_2(g) + 400 ext{kJ}$ $ ext{C}(s) + \frac{1}{2} ext{O}_2(g) ightarrow ext{CO}(g) + 100 ext{kJ}$ $\text{When coal of purity } 60\% \text{ is allowed to burn in presence of insufficient oxygen, } 60\% \text{ of carbon is converted into 'CO' and the remaining is converted into 'CO}_2\text{'. The heat generated when } 0.6 \text{ kg of coal is burnt is:}$ 2 201 JEE MCQ NEW $1600 \text{kJ}$, $3200 \text{kJ}$... 4 Edit Delete
20804 $\text{Consider the following reaction:}$ $4\text{HNO}_3(l) + 3\text{KCl}(s) \rightarrow$ $\text{Cl}_2(g) + \text{NOCl}(g) + 2\text{H}_2\text{O}(g) + 3\text{KNO}_3(s)$ $\text{How much HNO}_3 \text{ (in grams) is required to produce 110.0 g of KNO}_3?$ $\text{(Given: Atomic masses of H, O, N, and K are 1, 16, 14, and 39, respectively.)}$ 2 201 JEE MCQ NEW $32.2\text{g}$, $69.4\text{g}$... 3 Edit Delete
20803 $\text{Elements A and B form two compounds, } \text{A}_2\text{B} \text{ and } \text{AB}_3, \text{ with equal weights for 0.15 moles of each compound.}$ $\text{What is the ratio of the molar atomic mass of element A and element B?}$ 2 201 JEE MCQ NEW $2 : 1$, $6 : 4$... 1 Edit Delete
20802 $6.1$ $\text{gram of CNG on combustion with } 208 \text{ grams of } \text{O}_2(g) \text{ produces, } \text{CO}_2(g) \text{ and } \text{H}_2\text{O with a lot of heat. The amount of } \text{CO}_2 \text{ produced in grams is:}$ $[\text{Consider CNG as methane and report your answer to the nearest integer.}]$ 2 201 JEE MCQ NEW $15 \text{ g}$, $19 \text{ g}$... 3 Edit Delete
20801 $\text{The number of moles of methane required for the combustion process to yield 81 grams of water is:}$ 2 201 JEE MCQ NEW $2.25 \text{ mole}$, $4.5 \text{ mole}$... 1 Edit Delete
20800 $5 \text{ grams of pent-1-ene react with how many grams of } \text{Br}_2 \text{ completely?}$ 2 201 JEE MCQ NEW $13.4 \text{ g}$, $9.4 \text{ g}$... 3 Edit Delete
20799 $\text{Given 645 g of a compound } \text{C}_6\text{H}_5\text{N}_3\text{O}_6 . \text{ The number of N atoms present in this compound is:}$ $\text{Report } x \text{ if your answer is } x \times 10^{21}$ $\left( C = 12, H = 1, N = 14, O = 16 \right) \left( N_A = 6.02 \times 10^{23} \right)$ 2 201 JEE MCQ NEW 5418, 5671... 1 Edit Delete
20798 $\text{If } 0.02 \text{ moles of } \text{H}_2\text{SO}_4 \text{ are present in 1 litre of solution from which 50\% solution is taken out and again diluted up to 1 litre by adding water. Further, if } 0.01 \text{ moles of } \text{H}_2\text{SO}_4 \text{ are added, then the total millimoles of } \text{H}_2\text{SO}_4 \text{ in the resulting solution will be:}$ $1.\ 10$ $2.\ 5$ $3.\ 20$ $4.\ 15$ 2 201 JEE MCQ NEW $10$, $5$... 3 Edit Delete
20797 $\text{To neutralize 20 mL of 0.1 M aqueous solution of phosphorus acid } (\text{H}_3\text{PO}_3) \text{ completely, the volume of 0.1 M aqueous KOH solution required is:}$ 2 201 JEE MCQ NEW $10 \text{ mL}$, $20 \text{ mL}$... 3 Edit Delete
20796 $6.02 \times 10^{20}$ $\text{molecules of urea are present in } 100 \text{ mL of its solution.}$ $\text{The concentration of urea solution is:}$ $(\text{Avogadro constant, } N_A = 6.02 \times 10^{23} \text{ mol}^{-1})$ 2 201 JEE MCQ NEW 0.001 \text{ M}, 0.01 \text{ M}... 2 Edit Delete
20795 $\text{Two solutions of a substance (non electrolyte) are mixed in the following manner.}$ $480 \text{ mL of } 1.5 \text{ M first solution } + 520 \text{ mL of } 1.2 \text{ M second solution.}$ $\text{What is the molarity of the final mixture?}$ 2 201 JEE MCQ NEW $2.70 \text{ M}$, $1.344 \text{ M}$... 2 Edit Delete
20794 $\text{How many moles of magnesium phosphate, } \text{Mg}_3(\text{PO}_4)_2, \text{ contain } 0.25 \text{ moles of oxygen atoms?}$ 2 201 JEE MCQ NEW $0.02$, $3.125 \times 10^{-2}$... 2 Edit Delete
20793 $\text{Which of the following statements is true regarding the reaction given below?}$ $2\text{Al}_{(s)} + 6\text{HCl}_{(aq)} \rightarrow 2\text{Al}^{3+}_{(aq)} + 6\text{Cl}^{-}_{(aq)} + 3\text{H}_2_{(g)}$ 2 201 JEE MCQ NEW $6\text{L HCl}_{(aq)} \text{ is consumed for every } 3\text{L of H}_2_{(g)} \text{ produced.}$, $33.6\text{ L H}_2_{(g)} \text{ is produced regardless of temperature and pressure for every mole of Al that reacts.}$... 4 Edit Delete
20792 $\text{The mass of potassium dichromate crystals required to oxidize } 750 \, \text{cm}^3 \text{ of } 0.6 \, \text{M Mohr's salt solution is:}$ $\text{(Given molar mass: potassium dichromate = 294, Mohr's salt = 392)}$ 2 201 JEE MCQ NEW $0.45 \, \text{g}$, $22.05 \, \text{g}$... 2 Edit Delete
20791 $\text{The molarity of a solution obtained by mixing } 750 \text{ mL of } 0.5\text{M HCl with } 250 \text{ mL of } 2\text{M HCl will be:}$ 2 201 JEE MCQ NEW $1.75 \text{ M}$, $0.975 \text{ M}$... 3 Edit Delete
20790 $\text{A gaseous hydrocarbon upon combustion gives } 0.72 \text{ g of water and } 3.08 \text{ g of } \text{CO}_2. \text{ The empirical formula of the hydrocarbon is:}$ 2 201 JEE MCQ NEW $\text{C}_6\text{H}_5$, $\text{C}_7\text{H}_8$... 2 Edit Delete
20789 $\text{What is the ratio of the number of molecules of oxygen to nitrogen in a specific gaseous mixture if their mass ratio is } 1:4?$ 2 201 JEE MCQ NEW $7:32$, $1:8$... 1 Edit Delete
20788 $3 \text{ g of activated charcoal was added to } 50 \text{ mL of acetic acid solution } (0.06 \text{ N}) \text{ in a flask.}$ $\text{After an hour it was filtered and the strength of the filtrate was found to be } 0.042 \text{ N.}$ $\text{The amount of acetic acid adsorbed (per gram of charcoal) is:}$ 2 201 JEE MCQ NEW $18 \text{ mg}$, $36 \text{ mg}$... 1 Edit Delete
20787 $\text{The molecular formula of a commercial resin used for exchanging ions in water softening is } \text{C}_8\text{H}_7\text{SO}_3\text{Na} \text{ (Mol. Wt. 206).}$ $\text{The maximum uptake of } \text{Ca}^{2+} \text{ ions by the resin when expressed in mole per gram resin is:}$ $\text{C}_8\text{H}_7\text{SO}_3\text{Na} + \text{Ca}^{2+} \rightarrow (\text{C}_8\text{H}_7\text{SO}_3)_2\text{Ca} + \text{Na}^+$ 2 201 JEE MCQ NEW $\frac{1}{103}$, $\frac{1}{206}$... 4 Edit Delete
20786 $1 \text{ gram of a carbonate } (\text{M}_2\text{CO}_3) \text{ on treatment with excess HCl produces } 0.01186 \text{ moles of } \text{CO}_2. \text{ The molar mass of } \text{M}_2\text{CO}_3 \text{ in g mol}^{-1} \text{ is:}$ 2 201 JEE MCQ NEW $118.6$, $11.86$... 4 Edit Delete
20785 $5 \text{ moles of } \text{AB}_2 \text{ weight } 125 \times 10^{-3} \text{ kg and } 10 \text{ moles } \text{A}_2\text{B}_2 \text{ weight } 300 \times 10^{-3} \text{ kg. The molar mass of A } (M_A) \text{ and molar mass of B } (M_B) \text{ in kg mol are:}$ 2 201 JEE MCQ NEW $M_A = 10 \times 10^{-3} \text{ and } M_B = 5 \times 10^{-3}$, $M_A = 25 \times 10^{-3} \text{ and } M_B = 50 \times 10^{-3}$... 3 Edit Delete
20784 $\text{What is the molality of a solution containing 20\% (mass/mass) KI in water?}$ $\text{(molar mass of KI = 166 g mol}^{-1}\text{)}$ 2 201 JEE MCQ NEW $1.51$, $7.35$... 1 Edit Delete
20783 $\text{A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass percentage of carbon in P is:}$ $\text{(to the nearest integer) (Atomic mass : C =12; H=1; O=16)}$ 2 201 JEE MCQ NEW $65$, $69$... 2 Edit Delete
20782 $\text{A solution of two components containing } n_1 \text{ moles of the 1}^{\text{st}} \text{ component } n_2 \text{ moles of the 2}^{\text{nd}} \text{ component is prepared.}$ $M_1 \text{ and } M_2 \text{ are the molecular weights of component 1 and 2 respectively.}$ $\text{If } d \text{ is the density of the solution in g mL}^{-1}, C_2 \text{ is the molarity and } x_2 \text{ is the mole fraction of the 2}^{\text{nd}} \text{ component, then } C_2 \text{ can be expressed as:}$ 2 201 JEE MCQ NEW $C_2 = \frac{dx_2}{M_2 + x_2 \left( M_2 - M_1 \right)}$, $C_2 = \frac{1000 \ dx_2}{M_1 + x_2 \left( M_2 - M_1 \right)}$... 2 Edit Delete
20781 $\text{The volume, in mL, of 0.02 M } \text{K}_2\text{Cr}_2\text{O}_7 \text{ solution required to react with } 0.288 \text{ g of ferrous oxalate in an acidic medium is:}$ $\text{[Given: Molar mass of Fe = 56 g mol}^{-1}]}$ 2 201 JEE MCQ NEW $55 \text{ mL}$, $45 \text{ mL}$... 3 Edit Delete
20780 $\text{A 100 mL solution was made by adding 1.43 g of } \text{Na}_2\text{CO}_3\cdot x\text{H}_2\text{O}. \text{ The normality of the solution is 0.1 M. The value of } x \text{ is:}$ $\text{(The atomic mass of Na is 23 g/mol)}$ 2 201 JEE MCQ NEW $1$, $10$... 2 Edit Delete
20779 $\text{Complex A has a composition of } \text{H}_{12}\text{O}_6\text{Cl}_3\text{Cr} . \text{ If the complex on treatment with concentrated } \text{H}_2\text{SO}_4 \text{ loses 13.5\% of its original mass, the correct molecular formula of A is:}$ $\text{[Given: atomic mass of Cr = 52 amu and Cl = 35 amu]}$ 2 201 JEE MCQ NEW $[\text{Cr(H}_2\text{O})_5\text{Cl}]\text{Cl}_2\cdot 2\text{H}_2\text{O}$, $[\text{Cr(H}_2\text{O})_6]\text{Cl}_3$... 4 Edit Delete
20778 $0.4 \text{ g mixture of NaOH, Na}_2\text{CO}_3 \text{ and some inert impurities was first titrated with } \frac{N}{10} \text{ HCl using phenolphthalein as an indicator, } 17.5 \text{ mL of HCl was required at the end point. After this methyl orange was added and titrated. } 1.5 \text{ mL of same HCl was required for the next end point. The weight percentage of Na}_2\text{CO}_3 \text{ in the mixture is- (Rounded-off to the nearest integer)}$ 2 201 JEE MCQ NEW $6 \%$, $4 \%$... 2 Edit Delete
20777 $\text{A compound has a composition of } 8.64\% \text{ hydrogen, } 74\% \text{ carbon, and } 17.36\% \text{ nitrogen by mass, with a molecular mass of } 162 \text{ g/mol.}$ $\text{Which of the following could be the compound?}$ 2 201 JEE MCQ NEW $\text{C}_5\text{H}_7\text{N}$, $\text{C}_{10}\text{H}_{14}\text{N}_2$... 2 Edit Delete
20776 $\text{The Glycine content of a protein is } 0.3\%, \text{ what is the minimum mass of protein?}$ $[\text{Molecular weight of Glycine} = 75]$ 2 201 JEE MCQ NEW $26000$, $30000$... 3 Edit Delete
20775 $0.1 \text{ M, 10 ml of an acid 'A' gets completely neutralized by } 0.05 \text{ M, 20 ml of base } M(OH)_2.$ $\text{The basicity of acid 'A' is:}$ $\text{(here M is metal)}$ 2 201 JEE MCQ NEW $4$, $3$... 3 Edit Delete
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20677 $\text{The magnetic field in a plane electromagnetic wave is}$ $B_y = (3.5 \times 10^{-7}) \sin(1.5 \times 10^3 x + 0.5 \times 10^{11} t) \text{ T. The corresponding electric field will be:}$ 1 123 JEE MCQ NEW $E_z = 105 \sin(1.5 \times 10^3 x + 0.5 \times 10^{11} t) \text{ Vm}^{-1}$, $E_y = 1.17 \sin(1.5 \times 10^3 x + 0.5 \times 10^{11} t) \text{ Vm}^{-1}$... 1 Edit Delete
20676 $\text{A plane EM wave is propagating along x direction. It has a wavelength of mm. If electric field is in y direction with the maximum magnitude of } 60 \text{Vm}^{-1}, \text{ the equation for magnetic field is:}$ 1 123 JEE MCQ NEW $B_z = 2 \times 10^{-7} \sin \left[ \frac{\pi}{2} \times 10^3 \left( x - 3 \times 10^8 t \right) \right] \text{kT}$, $B_z = 60 \sin \left[ \frac{\pi}{2} \left( x - 3 \times 10^8 t \right) \right] \text{kT}$... 1 Edit Delete
20675 $\text{In the given electromagnetic wave } E_y = 600 \sin(\omega t - kx) \text{ Vm}^{-1},$ $\text{intensity of the associated light beam is (in W/m}^2\text{): (Given }$ $\varepsilon_0 = 9 \times 10^{-12} \text{ C}^2 \text{ N}^{-1} \text{ m}^{-2})$ 1 123 JEE MCQ NEW 729, 243... 4 Edit Delete
20674 $\text{Electromagnetic waves travel in a medium with speed of}$ $1.5 \times 10^8 \text{ ms}^{-1}. \text{ The relative permeability of the medium is } 2.0. \text{ The relative permittivity will be:}$ 1 123 JEE MCQ NEW $2$, $1$... 1 Edit Delete
20673 $\text{Arrange the following in the ascending order of wavelength:}$ $\text{A. Gamma rays } (\lambda_1)$ $\text{B. x-rays } (\lambda_2)$ $\text{C. Infrared waves } (\lambda_3)$ $\text{D. Microwaves } (\lambda_4)$ $\text{Choose the most appropriate answer from the options given below.}$ 1 123 JEE MCQ NEW $\lambda_4 < \lambda_3 < \lambda_1 < \lambda_2$, $\lambda_2 < \lambda_1 < \lambda_4 < \lambda_3$... 4 Edit Delete
20672 $\text{An electromagnetic wave has an electric field given by}$ $\vec{E} = (9.6\hat{i}) \sin \left[ 2\pi \left\{ 30 \times 10^6 t - \frac{1}{10} x \right\} \right] , x \text{ and } t \text{ are in S.I units.}$ $\text{The maximum magnetic field } (B_0) \text{ associated with this wave is:}$ 1 123 JEE MCQ NEW $3.2 \times 10^{-8} \text{ T}$, $9.6 \times 10^{-8} \text{ T}$... 1 Edit Delete
20671 $\text{An electromagnetic wave is given as}$ $E = 200 \sin(1.5x - (4.5 \times 10^8)t)$, $\text{here } E \text{ is the electric field in } \text{N/C.}$ $\text{If energy density in the electromagnetic field is given as}$ $N \times 10^{-8} \text{ J/m}^3$. $\text{Then } N \text{ is: } (\varepsilon_0 = 9 \times 10^{-12} \text{ S.I units.})$ 1 123 JEE MCQ NEW 9, 18... 2 Edit Delete
20670 $\text{Which of the following shows time-varying magnetic field?}$ 1 123 JEE MCQ NEW $\text{Linearly varying}$, $\text{Permanent magnet}$... 3 Edit Delete
20669 $\text{Which is more energetic: an infrared wave or a microwave?}$ 1 123 JEE MCQ NEW $\text{infrared wave}$, $\text{microwave}$... 1 Edit Delete
20668 $\text{A parallel plate capacitor } C \text{ connected with a battery of voltage } V_0. \text{ A close gaussian surface is shown by dotted boundary as shown. The electric flux through the surface is}$ 1 123 JEE MCQ NEW $\frac{2CV}{\varepsilon_0}$, $\frac{CV_0}{\varepsilon_0}$... 2 Edit Delete
20667 $\text{If electric field } (\vec{E}) \text{ at an instant is } 6.6 \text{ N/C } \hat{j} \text{ and the EM wave is}$ $\text{propagating along positive x-direction then B at that instant is given}$ $\text{by:}$ 1 123 JEE MCQ NEW $2.2 \times 10^{-8} \hat{k} \text{T}$, $-2.2 \times 10^{8} \hat{k} \text{T}$... 1 Edit Delete
20666 $\text{Which of the following electromagnetic waves has the highest energy?}$ $1.\ \text{X-rays}$ $2.\ \text{Infrared}$ $3.\ \text{Microwaves}$ $4.\ \text{radio waves}$ 1 123 JEE MCQ NEW $\text{X-rays}$, $\text{Infrared}$... 1 Edit Delete
20665 $\text{In an EM wave ratio of average electric field and magnetic field energy density in a region of wave is equal to}$ 1 123 JEE MCQ NEW $\frac{2\varepsilon_0}{\mu_0C^2}$, $\frac{C^2\varepsilon_0}{\mu_0}$... 3 Edit Delete
20664 $\text{In the electromagnetic wave, the ratio of average energy density}$ $\text{carried by the electric field to that by the magnetic field is:}$ 1 123 JEE MCQ NEW $1$, $\frac{1}{2}$... 1 Edit Delete
20663 $\text{An electromagnetic wave beam of power } 20 \text{ mW is incident on a perfectly absorbing body for } 300 \text{ ns. The total momentum transferred by the beam to the body is equal to:}$ 1 123 JEE MCQ NEW $2 \times 10^{-17} \text{ N-s}$, $1 \times 10^{-17} \text{ N-s}$... 1 Edit Delete
20662 $\text{Nearly } 10\% \text{ of the power of a } 110 \text{ W light bulb is converted to visible radiation.}$ $\text{The change in average intensities of visible radiation, at a distance of } 1 \text{ m from the bulb to a distance of } 5 \text{ m is } a \times 10^{-2} \text{ W/m}^2.$ $\text{The value of } a \text{ will be:}$ 1 123 JEE MCQ NEW 100, 58... 3 Edit Delete
20661 $\text{As shown in the figure, after passing through the medium 1, the speed of light } v_2 \text{ in medium 2 will be:}$ $\text{(Given } c = 3 \times 10^8 \text{ ms}^{-1} )$ $\begin{array}{ccc} \text{Air} & \text{Medium 1} & \text{Medium 2} \\ \mu_r = 1 & \mu_r = 1 & \mu_r = 1 \\ \varepsilon_r = 1 & \varepsilon_r = 4 & \varepsilon_r = 9 \end{array}$ 1 123 JEE MCQ NEW $1.0 \times 10^8 \text{ ms}^{-1}$, $0.5 \times 10^8 \text{ ms}^{-1}$... 1 Edit Delete
20660 $\text{Identify the correct statements from the following descriptions of various properties of electromagnetic waves.}$ $\text{A. In a plane electromagnetic wave electric field and magnetic field must be perpendicular to each other and direction of propagation of wave should be along electric field or magnetic field.}$ $\text{B. The energy in electromagnetic wave is divided equally between electric and magnetic fields.}$ $\text{C. Both electric field and magnetic field are parallel to each other and perpendicular to the direction of propagation of wave.}$ $\text{D. The electric field, magnetic field and direction of propagation of wave must be perpendicular to each other.}$ $\text{E. The ratio of amplitude of magnetic field to the amplitude of electric field is equal to speed of light.}$ $\text{Choose the most appropriate answer from the options given below:}$ 1 123 JEE MCQ NEW $\text{(D) only}$, $\text{(B) and (D) only}$... 2 Edit Delete
20659 $\text{A beam of light travelling along } X\text{-axis is described by the electric field } E_y = 900 \sin \omega (t - x/c).$ $\text{The ratio of electric force to magnetic force on a charge } q \text{ moving along } Y\text{-axis with a speed of } 3 \times 10^7 \text{ ms}^{-1} \text{ will be:}$ $\text{[Given speed of light } = 3 \times 10^8 \text{ ms}^{-1}]$ 1 123 JEE MCQ NEW $1 : 1$, $1 : 10$... 3 Edit Delete
20658 $\text{The oscillating magnetic field in a plane electromagnetic wave is given by:}$ $B_y = 5 \times 10^{-6} \sin(1000\pi)(5x - 4 \times 10^8 t).$ $\text{The amplitude of the electric field will be:}$ 1 123 JEE MCQ NEW $15 \times 10^2 \text{ Vm}^{-1}$, $5 \times 10^{-6} \text{ Vm}^{-1}$... 1 Edit Delete
20657 $\text{A parallel beam of light of wavelength } 900 \text{ nm and intensity } 100 \text{ Wm}^{-2}$ $\text{is incident on a surface perpendicular to the beam. The number of}$ $\text{photons crossing } 1 \text{ cm}^2 \text{ area perpendicular to the beam in one}$ $\text{second is:}$ 1 123 JEE MCQ NEW $3 \times 10^{16}$, $4.5 \times 10^{16}$... 2 Edit Delete
20656 $\text{A radio can tune to any station in } 6 \text{ MHz to } 10 \text{ MHz band. The value of corresponding wavelength bandwidth will be:}$ 1 123 JEE MCQ NEW $4 \text{ m}$, $20 \text{ m}$... 2 Edit Delete
20655 $\text{A light wave traveling in air along } x\text{-direction is given by}$ $E_y = 540 \sin \pi \times 10^4 (x - ct) \text{ Vm}^{-1}.$ $\text{The peak value of the magnetic field of the wave will be: (Given } c = 3 \times 10^8 \text{ ms}^{-1})$ 1 123 JEE MCQ NEW $18 \times 10^{-7} \text{ T}$, $54 \times 10^{-7} \text{ T}$... 1 Edit Delete
20654 $\text{A displacement current of } 4.425 \, \mu\text{A is developed in the space between the plates of a parallel plate capacitor when voltage is changing at a rate of } 10^6 \, \text{V/s.}$ $\text{The area of each plate of the capacitor is } 40 \, \text{cm}^2.$ $\text{The distance between each plate of the capacitor is } x \times 10^{-3} \, \text{m.}$ $\text{The value of } x \text{ is:}$ $\text{(the permittivity of free space, } \varepsilon_0 = 8.85 \times 10^{-12} \, \text{C}^2\text{N}^{-1}\text{m}^{-2})$ 1 123 JEE MCQ NEW $2$, $4$... 4 Edit Delete
20653 $\text{The intensity of the light from a bulb incident on a surface is } 0.22 \text{ W/m}^2. \text{ The amplitude of the magnetic field in this light wave is:}$ $\text{(Given: Permittivity of vacuum } \varepsilon_0 = 8.85 \times 10^{-12} \text{ C}^2 \text{ N}^{-1}\text{m}^{-2}, \text{ speed of light in vacuum, } c = 3 \times 10^8 \text{ ms}^{-1})$ 1 123 JEE MCQ NEW $27 \times 10^{-9} \text{ T}$, $43 \times 10^{-9} \text{ T}$... 2 Edit Delete
20652 $\text{An EM wave propagating in } x\text{-direction has a wavelength of } 8 \text{ mm.}$ $\text{The electric field vibrating } y\text{-direction has maximum magnitude of } 60 \text{ Vm}^{-1}. \text{ Choose the correct equations for electric and magnetic fields if the EM wave is propagating in a vacuum:}$ 1 123 JEE MCQ NEW $E_y = 60 \sin \left[ \frac{\pi}{4} \times 10^3 \left( x - 3 \times 10^8 t \right) \right] \hat{\jmath} \text{ Vm}^{-1}$ $B_z = 2 \sin \left[ \frac{\pi}{4} \times 10^3 \left( x - 3 \times 10^8 t \right) \right] \hat{k} \text{ T}$, $E_y = 60 \sin \left[ \frac{\pi}{4} \times 10^3 \left( x - 3 \times 10^8 t \right) \right] \hat{\jmath} \text{ Vm}^{-1}$ $B_z = 2 \times 10^{-7} \sin \left[ \frac{\pi}{4} \times 10^3 \left( x - 3 \times 10^8 t \right) \right] \hat{k} \text{ T}$... 2 Edit Delete
20651 $\text{A radar sends an electromagnetic signal of an electric field } (E_0) = 2.25 \text{ V/m and a magnetic field } (B_0) = 1.5 \times 10^{-8} \text{ T}}$ $\text{which strikes a target on the line of sight at a distance of } 3 \text{ km in a medium.}$ $\text{After that, a part of signal (echo) reflects back towards the radar with the same velocity and by the same path.}$ $\text{If the signal was transmitted at time } t_0 \text{ from radar, then after how much time echo will reach the radar?}$ 1 123 JEE MCQ NEW $2.0 \times 10^{-5} \text{ s}$, $4.0 \times 10^{-5} \text{ s}$... 2 Edit Delete
20650 $\text{Consider the following statements:}$ $\text{Statement I:}$ \text{A time-varying electric field is a source of a changing magnetic field and vice-versa. Thus a disturbance in the electric or magnetic field creates EM waves.}$ $\text{Statement II:}$ \text{In a material medium, the EM wave travels with a speed, } v = \frac{1}{\sqrt{\mu_0\varepsilon_0}}.$ 1 123 JEE MCQ NEW $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 4 Edit Delete
20649 $\text{Which is the correct ascending order of wavelengths?}$ 1 123 JEE MCQ NEW $\lambda_{\text{visible}} < \lambda_{\text{X-ray}} < \lambda_{\text{gamma-ray}} < \lambda_{\text{microwave}}$, $\lambda_{\text{gamma-ray}} < \lambda_{\text{X-ray}} < \lambda_{\text{visible}} < \lambda_{\text{microwave}}$... 2 Edit Delete
20648 $\text{If the electric field intensity of a uniform plane electromagnetic wave is given as}$ $E = -301.6 \sin(kz - \omega t)\hat{a}_x + 452.4 \sin(kz - \omega t)\hat{a}_y \text{ V/m}$ $\text{Then, magnetic intensity } H \text{ of this wave in Am}^{-1} \text{ will be: [ Given:}$ $\text{Speed of light in vacuum, } c = 3 \times 10^8 \text{ ms}^{-1}, \text{ the permeability of vacuum, } \mu_0 = 4\pi \times 10^{-7} \text{ NA}^{-2}]$ 1 123 JEE MCQ NEW $+0.8 \sin(kz - \omega t)\hat{a}_y + 0.8 \sin(kz - \omega t)\hat{a}_x$, $+1.0 \times 10^{-6} \sin(kz - \omega t)\hat{a}_y + 1.5 \times 10^{-6}(kz - \omega t)\hat{a}_x$... 3 Edit Delete
20647 $\text{The electromagnetic waves travel in a medium at a speed of } 2.0 \times 10^8 \text{ m/s.}$ $\text{The relative permeability of the medium is } 1.0. \text{ The relative permittivity of the medium will be:}$ 1 123 JEE MCQ NEW $2.25$, $4.25$... 1 Edit Delete
20646 $\text{The electric field in an electromagnetic wave is given by}$ $E = 56.5 \sin \omega (t - \frac{x}{c}) \text{ NC}^{-1}.$ $\text{The intensity of the wave if it is propagating along the } x\text{-axis in the free space is: (Given:}$ $\varepsilon_0 = 8.85 \times 10^{-12} \text{ C}^2\text{N}^{-1}\text{m}^{-2})$ 1 123 JEE MCQ NEW $5.65 \text{ Wm}^{-2}$, $4.24 \text{ Wm}^{-2}$... 2 Edit Delete
20645 $\text{An electric bulb is rated as } 200 \text{ W. What will be the peak magnetic field at } 4 \text{ m distance produced by the radiations coming from this bulb? Consider the bulb as a point source with } 3.5\% \text{ efficiency.}$ 1 123 JEE MCQ NEW $1.19 \times 10^{-8} \text{ T}$, $1.71 \times 10^{-8} \text{ T}$... 2 Edit Delete
20644 $\text{A plane electromagnetic wave travels in a medium with relative}$ $\text{permeability } 1.61 \text{ and relative permittivity } 6.44. \text{ If the magnitude of}$ $\text{magnetic intensity is } 4.5 \times 10^{-2} \text{ Am}^{-1} \text{ at a point, the approximate}$ $\text{magnitude of electric field intensity at that point will be:}$ $\text{(Given: permeability of free space, } \mu_0 = 4\pi \times 10^{-7} \text{ NA}^{-2}, \text{ speed of}$ $\text{light in vacuum, } c = 3 \times 10^8 \text{ ms}^{-1})$ 1 123 JEE MCQ NEW $16.96 \text{ Vm}^{-1}$, $2.25 \times 10^{-2} \text{ Vm}^{-1}$... 3 Edit Delete
20643 $\text{An electromagnetic wave of frequency } 3 \text{ GHz enters a dielectric medium of relative electric permittivity } 2.25 \text{ from vacuum. The wavelength of this wave in that medium will be:}$ 1 123 JEE MCQ NEW $3.45 \text{ m}$, $3.45 \text{ cm}$... 4 Edit Delete
20642 $\vec{E} = E_0 (\hat{x} + \hat{y}) \sin(kz - \omega t).$ $\text{Its magnetic field will be given by:}$ 1 123 JEE MCQ NEW $\frac{E_0}{c} (-\hat{x} + \hat{y}) \sin(kz - \omega t)$, $\frac{E_0}{c} (\hat{x} + \hat{y}) \sin(kz - \omega t)$... 1 Edit Delete
20641 $\text{Choose the correct option relating wavelengths of different parts of electromagnetic wave spectrum:}$ 1 123 JEE MCQ NEW $\lambda_{\text{radio waves}} > \lambda_{\text{micro waves}} > \lambda_{\text{visible}} > \lambda_{\text{X-rays}}$, $\lambda_{\text{visible}} > \lambda_{\text{X-rays}} > \lambda_{\text{radio waves}} > \lambda_{\text{micro waves}}$... 1 Edit Delete
20640 $\text{A plane electromagnetic wave, has frequency of } 2.0 \times 10^{10} \text{ Hz and its energy density is } 1.02 \times 10^{-8} \text{ J/m}^3 \text{ in vacuum. The amplitude of the magnetic field of the wave is close to:}$ $\left( \frac{1}{4\pi \varepsilon_0} = 9 \times 10^9 \text{ Nm}^2 \text{ C}^{-2} \text{ and speed of light } = 3 \times 10^8 \text{ ms}^{-1} \right)$ 1 123 JEE MCQ NEW $180 \text{ nT}$, $160 \text{ nT}$... 2 Edit Delete
20639 $\text{The energy associated with an electric field is } (U_E) \text{ and with a magnetic field is } (U_B) \text{ for an electromagnetic wave in free space. Then:}$ 1 123 JEE MCQ NEW $U_E = \frac{U_B}{2}$, $U_E > U_B$... 4 Edit Delete
20638 $\text{A plane electromagnetic wave of frequency travels in free space along the positive } x\text{-direction. At a particular point in space and time, } \vec{E} = 6.3 \hat{j} \text{ V/m. The corresponding magnetic field } \vec{B}, \text{ at that point will be:}$ 1 123 JEE MCQ NEW $18.9 \times 10^{-8} \hat{k} \text{ T}$, $2.1 \times 10^{-8} \hat{k} \text{ T}$... 2 Edit Delete
20637 $\text{Light is incident normally on a completely absorbing surface with an energy flux of } 25 \text{ Wcm}^{-2}. \text{ If the surface has an area of } 25 \text{ cm}^2, \text{ the momentum transferred to the surface in 40 min time duration will be:}$ 1 123 JEE MCQ NEW $6.3 \times 10^{-4} \text{ Ns}$, $5.0 \times 10^{-3} \text{ Ns}$... 2 Edit Delete
20636 $\text{The electric field of a plane electromagnetic wave is given by:}$ $\vec{E} = E_0 \hat{i} \cos(kz) \cos(\omega t)$ $\text{The corresponding magnetic field } \vec{B} \text{ is then given by:}$ 1 123 JEE MCQ NEW $\vec{B} = \frac{E_0}{c} \hat{k} \sin(kz) \cos(\omega t)$, $\vec{B} = \frac{E_0}{c} \hat{i} \sin(kz) \cos(\omega t)$... 4 Edit Delete
20635 $50 \text{ W/m}^2$ $\text{energy density of sunlight is normally incident on the surface of a polar panel. Some part of incident energy (25\%) is reflected from the surface and the rest is absorbed. The force exerted on } 1 \text{ m}^2 \text{ surface area will be close to } (c = 3 \times 10^8 \text{ m/s}):$ 1 123 JEE MCQ NEW $20 \times 10^{-8} \text{ N}$, $35 \times 10^{-8} \text{ N}$... 1 Edit Delete
20634 $\text{The magnetic field of a plane electromagnetic wave is given by:}$ $\mathbf{B} = B_0 \hat{i} [\cos(kz - \omega t)] + B_1 \hat{j} [\cos(kz - \omega t)]$ $\text{where}$ $B_0 = 3 \times 10^{-5} \text{ T and } B_1 = 2 \times 10^{-6} \text{ T.}$ $\text{The rms value of the force experienced by a stationary charge } Q = 10^{-4} \text{ C at } z = 0 \text{ is closest to:}$ 1 123 JEE MCQ NEW $0.6 \text{ N}$, $3 \times 10^{-2} \text{ N}$... 1 Edit Delete
20633 $\text{The magnetic field of an electromagnetic wave is given by:}$ $\vec{B} = 1.6 \times 10^{-6} \cos \left(2 \times 10^{-7}z + 6 \times 10^{15}t \right) \left(2\hat{i} + \hat{j} \right) \text{ Wb/m}^2$ $\text{The associated electric field will be:}$ 1 123 JEE MCQ NEW $\vec{E} = 4.8 \times 10^2 \cos \left(2 \times 10^7z + 6 \times 10^{15}t \right) \left(-\hat{i} + 2\hat{j} \right) \text{ V/m}$, $\vec{E} = 4.8 \times 10^2 \cos \left(2 \times 10^7z - 6 \times 10^{15}t \right) \left(2\hat{i} + 2\hat{j} \right) \text{ V/m}$... 1 Edit Delete
20632 $\text{A plane electromagnetic wave of wavelength } \lambda \text{ has an intensity } I. \text{ It is propagating along the positive } y\text{-direction. The allowed expressions for the electric and magnetic fields are given by:}$ 1 123 JEE MCQ NEW $\vec{E} = \sqrt{\frac{2I}{\varepsilon_0 c}} \cos \left[ \frac{2\pi}{\lambda} (y - ct) \right] \hat{k}; \quad \vec{B} = +\frac{1}{c} E \hat{i}$, $\vec{E} = \sqrt{\frac{I}{\varepsilon_0 c}} \cos \left[ \frac{2\pi}{\lambda} (y - ct) \right] \hat{k}; \quad \vec{B} = +\frac{1}{c} E \hat{i}$... 1 Edit Delete
20631 $\text{A monochromatic beam of light has a frequency } v = \frac{3}{2\pi} \times 10^{12} \text{ Hz}$ $\text{and is propagating along the direction } \frac{\hat{i} + \hat{j}}{\sqrt{2}}$ $\text{It is polarized along the } \hat{k}$ $\text{direction. The acceptable form of the magnetic field is:}$ 1 123 JEE MCQ NEW $\frac{E_0}{C} \left( \frac{\hat{i} - \hat{j}}{\sqrt{2}} \right) \cos \left[ 10^4 \left( \frac{\hat{i} - \hat{j}}{\sqrt{2}} \right) \cdot \vec{r} - (3 \times 10^{12})t \right]$, $\frac{E_0}{C} \hat{k} \cos \left[ 10^4 \left( \frac{\hat{i} + \hat{j}}{\sqrt{2}} \right) \cdot \vec{r} + (3 \times 10^{12})t \right]$... 3 Edit Delete
20630 $\text{The electric field component of a monochromatic radiation is given by}$ $\vec{E} = 2\ E_0\ \hat{i}\ \cos\ kz\ \cos\ \Omega t.$ $\text{Its magnetic field } \vec{B} \text{ is given by:}$ 1 123 JEE MCQ NEW $\frac{2}{c}\ E_0\ \hat{j}\ \cos\ kz\ \cos\ \omega t$, $\frac{2}{c}\ E_0\ \hat{j}\ \sin\ kz\ \cos\ \omega t$... 3 Edit Delete
20629 $\text{The magnetic field in a plane electromagnetic wave is given by}$ $\vec{B} = B_0 \sin(Kx + \omega t) \hat{j} \text{ T.}$ $\text{The expression for the corresponding electric field will be:}$ $\text{(where } c \text{ is the speed of light)}$ 1 123 JEE MCQ NEW $\vec{E} = \frac{B_0}{c} \sin(kx + \omega t) \hat{k} \text{ V/m}$, $\vec{E} = -B_0 c \sin(kx + \omega t) \hat{k} \text{ V/m}$... 3 Edit Delete
20628 $\text{Arrange the following electromagnetic radiations per quantum in the order of increasing energy:}$ $\text{A: Blue light}$ $\text{B: Yellow light}$ $\text{C: X-ray}$ $\text{D: Radiowave}$ 1 123 JEE MCQ NEW $\text{D, B, A, C}$, $\text{A, B, D, C}$... 1 Edit Delete
20627 $\text{For plane electromagnetic waves propagating in the } z \text{ direction,}$ $\text{which one of the following combinations gives the correct possible}$ $\text{direction for } \vec{E} \text{ and } \vec{B} \text{ field respectively?}$ 1 123 JEE MCQ NEW $(2\hat{i} + 3\hat{j}) \text{ and } (\hat{i} + 2\hat{j})$, $(-2\hat{i} - 3\hat{j}) \text{ and } (3\hat{i} - 2\hat{j})$... 2 Edit Delete
20626 $\text{An electromagnetic wave traveling in the } x\text{-direction has the frequency of } 2 \times 10^{14} \text{ Hz and electric field amplitude of } 27 \text{ Vm}^{-1}. \text{ From the options given below, which one describes the magnetic field for this wave?}$ 1 123 JEE MCQ NEW $\vec{B}(x,t) = (9 \times 10^{-8} \text{ T}) \hat{j} \sin [1.5 \times 10^{-6} x - 2 \times 10^{14} t]$, $\vec{B}(x,t) = (9 \times 10^{-8} \text{ T}) \hat{i} \sin [2\pi (1.5 \times 10^{-8} x - 2 \times 10^{14} t)]$... 3 Edit Delete
20625 $\text{During the propagation of electromagnetic waves in a medium:}$ 1 123 JEE MCQ NEW $\text{Electric energy density is half of the magnetic energy density}$, $\text{Electric energy density is equal to the magnetic energy density}$... 2 Edit Delete
20624 $\text{Match List-I with List-II and choose the correct option.}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \hline (A) \ \text{Microwave} & (p) \ 400 \ \text{nm} - 1 \ \text{nm} \\ (B) \ \text{Ultraviolet} & (q) \ 1 \ \text{nm} - 1 \ \text{pm} \\ (C) \ \text{X-rays} & (r) \ 2.5 \ \mu\text{m} - 750 \ \text{nm} \\ (D) \ \text{Infrared} & (s) \ 1 \ \text{mm} - 25 \ \mu\text{m} \\ \hline \end{array}$ 1 123 JEE MCQ NEW $\text{A-(s), B-(q), C-(r), D-(p)}$, $\text{A-(s), B-(p), C-(q), D-(r)}$... 2 Edit Delete
20623 $\text{Average energy density of an EM wave with electric field amplitude } E_0 \text{ and magnetic field amplitude } B_0 \text{ is equal to}$ 1 123 JEE MCQ NEW $\frac{1}{2} \varepsilon_0 E_0^2$, $\frac{B_0^2}{\mu_0}$... 1 Edit Delete
20622 $\text{Match the types of radiation listed in Column-I with their corresponding applications in Column-II.}$ $\begin{array}{|c|c|} \hline \text{Column-I} & \text{Column-II} \\ \text{(Radiation)} & \text{(Applications)} \\ \hline \text{(A) Ultraviolet rays} & \text{(I) Physiotherapy} \\ \text{(B) Infrared rays} & \text{(II) Treatment of cancer} \\ \text{(C) X-rays} & \text{(III) LASIK eye surgery} \\ \text{(D) Microwave rays} & \text{(IV) Aircraft navigation} \\ \hline \end{array}$ $\text{Codes:}$ $\begin{array}{l} \text{1. A-IV, B-I, C-III, D-II} \\ \text{2. A-III, B-I, C-II, D-IV} \\ \text{3. A-II, B-I, C-IV, D-III} \\ \text{4. A-III, B-I, C-IV, D-II} \end{array}$ 1 123 JEE MCQ NEW $\text{A-IV, B-I, C-III, D-II}$, $\text{A-III, B-I, C-II, D-IV}$... 2 Edit Delete
20621 $\text{Correctly match the two lists.}$ $\text{List-I:}$ \begin{array}{ll} (a) \ \text{Gauss's law (electrostatics)} & (b) \ \text{Ampere's circuital law} \\ (c) \ \text{Gauss's law (magnetism)} & (d) \ \text{Faraday's law of induction} \end{array} $ $\text{List-II:}$ \begin{array}{ll} (P) \ \vec{\mathbf{B}} \cdot d\vec{\mathbf{A}} = 0 & (Q) \ \vec{\mathbf{B}} \cdot d\vec{\mathbf{l}} = \mu_0 i_{\text{enclosed}} \\ (R) \ \vec{\mathbf{E}} \cdot d\vec{\mathbf{A}} = \frac{q_{\text{enclosed}}}{\varepsilon_0} & (S) \ \varepsilon = - \frac{d\phi_B}{dt} \end{array}$ 1 123 JEE MCQ NEW $(a) \rightarrow (R), (b) \rightarrow (Q), (c) \rightarrow (S), (d) \rightarrow (P)$, $(a) \rightarrow (R), (b) \rightarrow (Q), (c) \rightarrow (P), (d) \rightarrow (S)$... 2 Edit Delete
20620 $\text{Match List-I with List-II.}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \hline (A) \ \text{UV rays} & (I) \ \text{Diagnostic tool in medicine} \\ (B) \ \text{X-rays} & (II) \ \text{Water purification} \\ (C) \ \text{Microwave} & (III) \ \text{Communication, Radar} \\ (D) \ \text{Infrared wave} & (IV) \ \text{Improving visibility on foggy days} \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 1 123 JEE MCQ NEW $\text{A-III, B-II, C-I, D-IV}$, $\text{A-II, B-I, C-III, D-IV}$... 2 Edit Delete
20619 $\text{The magnetic field of a plane electromagnetic wave is given by;}$ $\vec{B} = 2 \times 10^{-8} \sin(0.5 \times 10^3 x + 1.5 \times 10^{11} t) \hat{j} \text{ T}$ $\text{The amplitude of the electric field would be:}$ 1 123 JEE MCQ NEW $6 \text{ Vm}^{-1} \text{ along } x\text{-axis}$, $3 \text{ Vm}^{-1} \text{ along } z\text{-axis}$... 3 Edit Delete
20618 $\text{Match List I with List II:}$ $\begin{array}{|c|c|} \hline \text{List I} & \text{List II} \\ \hline (a) \text{ Ultraviolet rays} & (i) \text{ Study crystal structure} \\ (b) \text{ Microwaves} & (ii) \text{ Greenhouse effect} \\ (c) \text{ Infrared waves} & (iii) \text{ Sterilizing surgical instrument} \\ (d) \text{ X-rays} & (iv) \text{ Radar system} \\ \hline \end{array}$ $\text{Choose the correct options from the given ones:}$ 1 123 JEE MCQ NEW $(a) \rightarrow (iii), (b) \rightarrow (iv), (c) \rightarrow (ii), (d) \rightarrow (i)$, $(a) \rightarrow (iii), (b) \rightarrow (i), (c) \rightarrow (ii), (d) \rightarrow (iv)$... 1 Edit Delete
20617 $\text{Match Column I with Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline (a) \text{ Source of microwave frequency} & (i) \text{ Radioactive decay on the nucleus} \\ (b) \text{ Source of infrared frequency} & (ii) \text{ Magnetron} \\ (c) \text{ Source of Gamma Rays} & (iii) \text{ Inner shell electrons} \\ (d) \text{ Source of X-Rays} & (iv) \text{ Vibration of atoms and molecules} \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 1 123 JEE MCQ NEW $(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)$, $(a)-(vi), (b)-(i), (c)-(iii), (d)-(ii)$... 3 Edit Delete
20616 $\text{An electromagnetic wave of frequency } 5 \text{ GHz, is travelling in a medium whose relative electric permittivity and relative magnetic permeability both are } 2. \text{ Its velocity in this medium is:}$ $1. \ 15 \times 10^7 \ \text{m/s}$ $2. \ 5 \times 10^7 \ \text{m/s}$ $3. \ 5 \times 10^8 \ \text{m/s}$ $4. \ 15 \times 10^8 \ \text{m/s}$ 1 123 JEE MCQ NEW $15 \times 10^7 \ \text{m/s}$, $5 \times 10^7 \ \text{m/s}$... 1 Edit Delete
20615 $\text{Column-I lists types of radiation, and Column-II lists their corresponding wavelengths. Match the correct pairs.}$ $\begin{array}{|c|c|} \hline \text{Column-I} & \text{Column-II} \\ \hline (A) \ \text{Microwaves} & (I) \ 100 \ \text{m} \\ (B) \ \text{Gamma rays} & (II) \ 10^{-15} \ \text{m} \\ (C) \ \text{AM radio waves} & (III) \ 10^{-10} \ \text{m} \\ (D) \ \text{X-rays} & (IV) \ 10^{-3} \ \text{m} \\ \hline \end{array}$ 1 123 JEE MCQ NEW $\text{A-II, B-I, C-IV, D-III}$, $\text{A-I, B-III, C-IV, D-II}$... 4 Edit Delete
20614 $\text{An electron is constrained to move along the } y\text{-axis with a speed of } 0.1\ c \ (c \text{ is the speed of light) in the presence of an electromagnetic wave, whose electric field is }$ $\vec{E} = 30 \hat{j} \sin(1.5 \times 10^7 t - 5 \times 10^{-2} x) \ \text{V/m. The maximum magnetic force experienced by the electron will be: (given }$ $c = 3 \times 10^8 \ \text{ms}^{-1} \text{ and electron charge } = 1.6 \times 10^{-19} \ \text{C})$ 1 123 JEE MCQ NEW $1.6 \times 10^{-19} \ \text{N}$, $4.8 \times 10^{-19} \ \text{N}$... 2 Edit Delete
20613 $\text{The electric field of a plane electromagnetic wave propagating, along the } x \text{ direction is vacuum is;} \quad \vec{E} = E_0 \cos(\omega t - kx) \hat{j}. \text{ The magnetic field } \vec{B} \text{ at the moment } t = 0 \text{ s is:}$ 1 123 JEE MCQ NEW $\vec{B} = \frac{E_0}{\sqrt{\mu_0 \epsilon_0}} \cos(kx) \hat{j}$, $\vec{B} = E_0 \sqrt{\mu_0 \epsilon_0} \cos(kx) \hat{j}$... 3 Edit Delete
20612 $\text{The magnetic field of a plane electromagnetic wave is given by:}$ $\vec{B} = 3 \times 10^{-8} \sin[200\pi(y + ct)] \hat{i} \ \text{T}$ $\text{Where} \ c = 3 \times 10^8 \ \text{m/s is the speed of light. The corresponding electric field is:}$ 1 123 JEE MCQ NEW $\vec{E} = -10^{-6} \sin[200\pi(y + ct)] \hat{k} \ \text{V/m}$, $\vec{E} = 3 \times 10^{-8} \sin[200\pi(y + ct)] \hat{k} \ \text{V/m}$... 3 Edit Delete
20611 $\text{A plane electromagnetic wave having a frequency } \nu = 23.9 \text{ GHz}$ $\text{propagates along the positive } z\text{-direction in free space. The peak}$ $\text{value of the Electric Field is } 60 \text{ V/m. Which among the following is}$ $\text{the acceptable magnetic field component in the electromagnetic}$ $\text{wave?}$ 1 123 JEE MCQ NEW $\vec{B} = 2 \times 10^{-7} \sin(1.5 \times 10^2 x + 0.5 \times 10^{11} t) \hat{j}$, $\vec{B} = 60 \sin(0.5 \times 10^3 x + 1.5 \times 10^{11} t) \hat{k}$... 3 Edit Delete
20610 $\text{An electromagnetic wave is represented by an electric field}$ $\vec{E} = E_0 \hat{n} \sin[\omega t + (\hat{s}y - 8z)].$ $\text{Taking unit factors in } x, y, \text{ and } z$ $\text{directions to be } \hat{i}, \hat{j}, \hat{k} \text{ the direction of propagation } \hat{s} \text{ is:}$ 1 123 JEE MCQ NEW $\hat{s} = \frac{-4\hat{k} + 3\hat{j}}{5}$, $\hat{s} = \frac{4\hat{j} + 3\hat{k}}{5}$... 3 Edit Delete
20609 3 1 123 JEE MCQ NEW 1, 2... 1 Edit Delete
20608 $\text{A red LED emits light at } 0.1 \text{ watt uniformly around it. The amplitude of the electric field of the light at a distance of } 1 \text{ m from the diode is:}$ 1 123 JEE MCQ NEW $1.73 \text{ V/m}$, $2.45 \text{ V/m}$... 2 Edit Delete
20607 $\text{Match List-I (Electromagnetic wave type) with List-II (Its association/application) and select the correct option from the choices given below the list:}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \hline \text{(a) Infrared waves} & \text{(i) To treat muscular strain} \\ \text{(b) Radio waves} & \text{(ii) For broadcasting} \\ \text{(c) X-rays} & \text{(iii) To detect fractures of bones} \\ \text{(d) Ultraviolet rays} & \text{(iv) Absorbed by the ozone layer of the atmosphere} \\ \hline \end{array}$ 1 123 JEE MCQ NEW $(\text{i})\ (\text{ii})\ (\text{iv})\ (\text{iii})$, $(\text{iii})\ (\text{ii})\ (\text{i})\ (\text{iv})$... 3 Edit Delete
20606 $\text{A bulb and a capacitor are connected in series across an AC supply.}$ $\text{A dielectric is then placed between the plates of the capacitor.}$ $\text{The glow of the bulb:}$ 1 122 JEE MCQ NEW $\text{remains same}$, $\text{decrease}$... 3 Edit Delete
20605 $\text{A LCR circuit is at resonance for a capacitor } C, \text{ inductance } L \text{ and resistance } R. \text{ Now the value of resistance is halved keeping all other parameters same. The current amplitude at resonance will be now:}$ 1 122 JEE MCQ NEW $\text{halved}$, $\text{Zero}$... 4 Edit Delete
20604 $\text{Given below are two statements:}$ $\text{Statement I - In an LCR series circuit, current is maximum at resonance.}$ $\text{Statement II - Current in a purely resistive circuit can never be less than that in a series LCR circuit when connected to some voltage source.}$ $\text{In the light of the above statements, choose the correct from the options given below:}$ 1 122 JEE MCQ NEW $\text{Statement I is true but Statement II is false}$, $\text{Statement I is false but Statement II is true}$... 4 Edit Delete
20603 $\text{Match List-I with List-II}$ $\text{List-I}$ \quad \text{List-II}$ $\text{A. Purely capacitive circuit}$ \quad \text{I.} \quad \text{I} \perp \text{V}$ $\text{B. Purely inductive circuit}$ \quad \text{II.} \quad \text{I} \parallel \text{V}$ $\text{C. LCR series at resonance}$ \quad \text{III.} \quad \text{V} \text{ at angle } \theta \text{ with I}$ $\text{D. LCR series circuit}$ \quad \text{IV.} \quad \text{V} \perp \text{I}$ $\text{Choose the correct answer from the options given below:}$ 1 122 JEE MCQ NEW $\text{A-IV, B-I, C-II, D-III}$, $\text{A-I, B-IV, C-III, D-II}$... 3 Edit Delete
20602 $\text{The alternating voltage and current in a circuit are given by:}$ $V = 100 \sin(\omega t) \text{ volts and } I = 100 \sin\left(\omega t + \frac{\pi}{3}\right) \text{ milliamperes.}$ $\text{The average power dissipated in the circuit is:}$ $1.\ 2.5 \text{ W}$ $2.\ 5 \text{ W}$ $3.\ 10 \text{ W}$ $4.\ 20 \text{ W}$ 1 122 JEE MCQ NEW $2.5 \text{ W}$, $5 \text{ W}$... 1 Edit Delete
20601 $\text{A capacitor having capacitance of } 100 \, \mu\text{F} \text{ is charged with a potential}$ $\text{difference of } 12 \, \text{V} \text{ is connected to an inductor of inductance}$ $10 \, \text{mH}. \text{ Then the maximum current through the inductor is:}$ 1 122 JEE MCQ NEW $2 \, \text{A}$, $1.6 \, \text{A}$... 4 Edit Delete
20600 $\text{Statement I: In LCR circuit, by increasing frequency current increases first then decreases}$ $\text{Statement II: Power factor of LCR circuit is one.}$ 1 122 JEE MCQ NEW $\text{Statement I is correct and statement II is incorrect}$, $\text{Statement I is incorrect and statement I is correct}$... 1 Edit Delete
20599 $\text{Consider the following statements:}$ $\text{Statement 1: An LCR circuit connected to an AC source has maximum average power at resonance.}$ $\text{Statement 2: A resistor only circuit with zero phase difference has maximum average power.}$ 1 122 JEE MCQ NEW $(1) \text{ and } (2) \text{ both are correct}$, $(1) \text{ is correct but } (2) \text{ is incorrect}$... 1 Edit Delete
20598 $\text{In a series } LCR \text{ circuit connected across } (220 \text{ V, } 50 \text{ Hz) ac supply. If the inductive reactance of the circuit is } 79.6 \, \Omega. \text{ If the power delivered in the circuit is maximum, then the capacitance of the circuit is:}$ 1 122 JEE MCQ NEW $40 \, \mu F$, $30 \, \mu F$... 1 Edit Delete
20597 $\text{In a series } RLC \text{ circuit, } R = 80 \, \Omega, \, X_L = 100 \, \Omega, \, X_C = 40 \, \Omega. \text{ If the source voltage is } 2500 \cos(628t) \, \text{V, the peak current is equal to:}$ 1 122 JEE MCQ NEW $5 \, \text{A}$, $25 \, \text{A}$... 2 Edit Delete
20596 $\text{Across an inductor of } 5 \text{ mH, an AC source with potential given as } 268 \sin(200\pi t) \text{ volts is used.}$ $\text{The value of inductive reactance provided by the inductor is equal to:}$ 1 122 JEE MCQ NEW $2\pi \ \Omega$, $\frac{\pi}{2} \ \Omega$... 4 Edit Delete
20595 $\text{If an insulator with inductive reactance } X_L = R \text{ is connected in series with resistance } R \text{ across an A.C voltage, the power factor comes out to be } P_1. \text{ Now, if a capacitor with capacitive reactance } X_C = R \text{ is also connected in series with the inductor and resistor in the same circuit, the power factor becomes } P_2. \text{ The ratio } \frac{P_1}{P_2} \text{ is:}$ 1 122 JEE MCQ NEW $\sqrt{2} : 1$, $1 : \sqrt{2}$... 2 Edit Delete
20594 $\text{A capacitor of capacitance } 500 \, \mu\text{F is charged completely using a dc supply of } 100 \, \text{V. It is now connected to an inductor of inductance } 50 \, \text{mH to form an } LC \text{ circuit. The maximum current in the } LC \text{ circuit will be:}$ $1. \; 10 \, \text{A}$ $2. \; 20 \, \text{A}$ $3. \; 30 \, \text{A}$ $4. \; 40 \, \text{A}$ 1 122 JEE MCQ NEW $10 \, \text{A}$, $20 \, \text{A}$... 1 Edit Delete
20593 $\text{A circuit element } X \text{ when connected to an AC supply of peak voltage } 100 \text{ V gives a peak current of } 5 \text{ A which is in phase with the voltage.}$ $\text{A second element } Y \text{ when connected to the same AC supply also gives the same value of peak current which lags behind the voltage by } \frac{\pi}{2}. \text{ If } X \text{ and } Y \text{ are connected in series to the same supply, the RMS value of the current in ampere will be:}$ 1 122 JEE MCQ NEW $\frac{10}{\sqrt{2}}$, $\frac{5}{\sqrt{2}}$... 4 Edit Delete
20592 $\text{An alternating emf } E = 440 \sin(100\pi t) \text{ is applied to a circuit containing an inductance of } \frac{\sqrt{2}}{\pi} \text{ H. If an AC ammeter is connected to the circuit, its reading will be:}$ $1.\ 4.4\ \text{A}$ $2.\ 1.55\ \text{A}$ $3.\ 2.2\ \text{A}$ $4.\ 3.11\ \text{A}$ 1 122 JEE MCQ NEW $4.4\ \text{A}$, $1.55\ \text{A}$... 3 Edit Delete
20591 $\text{The frequencies at which the current amplitude in an } LCR \text{ series circuit becomes } \frac{1}{\sqrt{2}} \text{ times its maximum value, are } 212 \text{ rad s}^{-1} \text{ and } 232 \text{ rad s}^{-1}. \text{ The value of resistance in the circuit is } R = 5 \, \Omega. \text{ The self-inductance in the circuit is:}$ 1 122 JEE MCQ NEW $510 \, \text{mH}$, $110 \, \text{mH}$... 3 Edit Delete
20590 $\text{The equation of current in a purely inductive circuit is}$ $5 \sin(49 \pi t - 30^\circ).$ $\text{If the inductance is 30 mH, then the equation for the voltage across the inductor will be:}$ $\left( \text{Let } \pi = \frac{22}{7} \right)$ 1 122 JEE MCQ NEW $1.47 \sin(49 \pi t - 30^\circ)$, $1.47 \sin(49 \pi t - 60^\circ)$... 4 Edit Delete
20589 $\text{A series } LCR \text{ circuit has } L = 0.01 \text{ H}, R = 10 \, \Omega \text{ and } C = 1 \, \mu\text{F}$ $\text{and it is connected to an AC voltage of amplitude } (V_m) \, 50 \, \text{V.}$ $\text{At a frequency } 60\% \text{ lower than resonant frequency, the amplitude of current will be approximately:}$ 1 122 JEE MCQ NEW $466 \, \text{mA}$, $312 \, \text{mA}$... 3 Edit Delete
20588 $\text{To light, a } 50 \text{ W, } 100 \text{ V lamp is connected in series with a capacitor of capacitance } \frac{50}{\pi \sqrt{x}} \mu\text{F}, \text{ with } 200 \text{ V, } 50 \text{ Hz AC source. The value of } x \text{ will be:}$ 1 122 JEE MCQ NEW $3$, $6$... 1 Edit Delete
20587 $\text{A direct current of } 4 \text{ A and an alternating current of peak value } 4 \text{ A}$ $\text{flow through resistance of } 3 \, \Omega \text{ and } 2 \, \Omega \text{ respectively.}$ $\text{The ratio of heat produced in the two resistances in same interval of time will be:}$ 1 122 JEE MCQ NEW $3 : 2$, $3 : 1$... 2 Edit Delete
20586 $\text{In a series } LR \text{ circuit } X_L = R \text{ and power factor of the circuit is } P_1. \text{ When capacitor with capacitance } C \text{ such that } X_L = X_C \text{ is put in series, the power factor becomes } P_2. \text{ The ratio } \frac{P_1}{P_2} \text{ is:}$ 1 122 JEE MCQ NEW $\frac{1}{2}$, $\frac{1}{\sqrt{2}}$... 2 Edit Delete
20585 $\text{The rms value of conduction current in a parallel plate capacitor is } 6.9 \, \mu\text{A. The capacity of this capacitor, if it is connected to } 230 \, \text{V AC supply with an angular frequency of } 600 \, \text{rad/s, will be:}$ 1 122 JEE MCQ NEW $5 \, \text{pF}$, $50 \, \text{pF}$... 2 Edit Delete
20584 $\text{To increase the resonant frequency in series } LCR \text{ circuit,}$ 1 122 JEE MCQ NEW $\text{Source frequency should be increased.}$, $\text{Another resistance should be added in series with the first resistance.}$... 3 Edit Delete
20583 $\text{For a series } LCR \text{ circuit, } I \text{ vs } \omega \text{ curve is shown.}$ $\text{Choose the most appropriate answer from the options given below:}$ 1 122 JEE MCQ NEW $(a) \text{ and } (d) \text{ only}$, $(b) \text{ and } (d) \text{ only}$... 3 Edit Delete
20582 $\text{In the given circuit, the magnitude of } V_L \text{ and } V_C \text{ are twice that of } V_R. \text{ Given that } f = 50 \text{ Hz, the inductance of the coil is } \frac{1}{K\pi} \text{ mH. The value of } K \text{ is:}$ 1 122 JEE MCQ NEW $1$, $3$... 3 Edit Delete
20581 $\text{A telegraph line of length } 100 \text{ km has a capacity of } 0.01 \, \mu\text{F/km}$ $\text{and it carries an alternating current at } 0.5 \text{ kilocycle per second.}$ $\text{If the minimum impedance is required, then the value of the inductance}$ $\text{that needs to be introduced in series is:}$ $\text{( if } \pi = \sqrt{10})$ 1 122 JEE MCQ NEW $100 \, \text{mH}$, $200 \, \text{mH}$... 1 Edit Delete
20580 $\text{A } 220 \text{ V, } 50 \text{ Hz AC source is connected to a } 25 \text{ V, } 5 \text{ W lamp and an additional resistance } R \text{ in series (as shown in the figure) to run the lamp at its peak brightness, then the value of } R \text{ (in ohm) will be:}$ 1 122 JEE MCQ NEW $736$, $863$... 3 Edit Delete
20579 $\text{The current flowing through an AC circuit is given by}$ $I = 5 \sin(120\pi t) \text{ A}$ $\text{How long will the current take to reach the peak value starting from zero?}$ 1 122 JEE MCQ NEW $\frac{1}{60} \text{ s}$, $60 \text{ s}$... 4 Edit Delete
20578 $\text{In a series } LCR \text{ circuit, the inductance, capacitance and resistance are } L = 100 \text{ mH}, C = 100 \ \mu\text{F} \text{ and } R = 10 \, \Omega \text{ respectively.}$ $\text{They are connected to an AC source of voltage } 220 \, \text{V} \text{ and frequency of } 50 \, \text{Hz}. \text{ The approximate value of current in the circuit will be:}$ 1 122 JEE MCQ NEW $15 \, \text{A}$, $32 \, \text{A}$... 3 Edit Delete
20577 $\text{A sinusoidal voltage } V(t) = 210 \sin(3000t) \text{ V is applied to a series } LCR \text{ circuit in which } L = 10 \text{ mH}, C = 25 \mu\text{F and } R = 100 \, \Omega. \text{ The phase difference } (\phi) \text{ between the applied voltage and resultant current will be:}$ 1 122 JEE MCQ NEW $\tan^{-1}(0.17)$, $\tan^{-1}(9.46)$... 1 Edit Delete
20576 $\text{If wattless current flows in the AC circuit, then the circuit is:}$ 1 122 JEE MCQ NEW $\text{purely Resistive circuit.}$, $\text{purely Inductive circuit.}$... 2 Edit Delete
20575 $\text{As shown in the figure an inductor of inductance } 200 \text{ mH is connected to an AC source of emf } 220 \text{ V and frequency } 50 \text{ Hz.}$ $\text{The instantaneous voltage of the source is } 0 \text{ V when the peak value of the current is } \frac{\sqrt{\alpha}}{\pi} \text{ A.}$ $\text{The value of } \alpha \text{ is:}$ 1 122 JEE MCQ NEW 125, 343... 4 Edit Delete
20574 $\text{A resistance of } 40 \, \Omega \text{ is connected to a source of alternating current rated } 220 \, \text{V, } 50 \, \text{Hz.}$ $\text{The time taken by the current to change from its maximum value to the RMS value is:}$ 1 122 JEE MCQ NEW $2.5 \, \text{ms}$, $1.25 \, \text{ms}$... 1 Edit Delete
20573 $\text{An alternating current is given by the equation}$ $i = i_1 \sin \omega t + i_2 \cos \omega t.$ $\text{The rms current will be:}$ 1 122 JEE MCQ NEW $\frac{1}{\sqrt{2}} \left( i_1^2 + i_2^2 \right)^{\frac{1}{2}}$, $\frac{1}{\sqrt{2}} \left( i_1 + i_2 \right)^2$... 1 Edit Delete
20572 $\text{An LCR circuit contains resistance of } 110 \, \Omega \text{ and a supply of } 220 \, \text{V at } 300 \, \text{rad/s angular frequency.}$ $\text{If only capacitance is removed from the circuit, current lags behind the voltage by } 45^\circ.$ $\text{If on the other hand, only inductor is removed the current leads by } 45^\circ \text{ with the applied voltage.}$ $\text{The rms current flowing in the circuit will be:}$ 1 122 JEE MCQ NEW $1 \, \text{A}$, $2.5 \, \text{A}$... 4 Edit Delete
20571 $\text{A series } LCR \text{ circuit is designed to resonate at an angular frequency } \omega_0 = 10^5 \text{ rad/s.}$ $\text{The circuit draws } 16 \text{ W power from } 120 \text{ V source at resonance.}$ $\text{The value of resistance } 'R' \text{ in the circuit is:}$ 1 122 JEE MCQ NEW $300 \, \Omega$, $600 \, \Omega$... 3 Edit Delete
20570 $\text{An AC circuit has } R = 100 \, \Omega, C = 2 \, \mu\text{F}, L = 80 \, \text{mH}, \text{ connected in series. The quality factor of the circuit is:}$ $1. \; 0.5$ $2. \; 20$ $3. \; 2$ $4. \; 400$ 1 122 JEE MCQ NEW $0.5$, $20$... 3 Edit Delete
20569 $\text{A power transmission line feeds input power at } 2300 \text{ V to a step-down transformer with its primary windings having } 4000 \text{ turns.}$ $\text{The output power is delivered at } 230 \text{ V by the transformer.}$ $\text{If the current in the primary of the transformer is } 5 \text{ A and its efficiency is } 90\%, \text{ the output current would be:}$ 1 122 JEE MCQ NEW $50 \text{ A}$, $45 \text{ A}$... 2 Edit Delete
20568 $\text{A transformer consisting of } 300 \text{ turns in the primary and } 150 \text{ turns in the secondary gives output power of } 2.2 \text{ kW.}$ $\text{If the current in the secondary coil is } 10 \text{ A, then the input voltage and current in the primary coil are:}$ 1 122 JEE MCQ NEW $440 \text{ V and } 20 \text{ A}$, $440 \text{ V and } 5 \text{ A}$... 2 Edit Delete
20567 $\text{A circuit connected to an AC source of emf } \varepsilon = \varepsilon_0 \sin(100t) \text{ with } t \text{ in seconds, gives a phase difference of } \frac{\pi}{4} \text{ between the emf } \varepsilon \text{ and current } i. \text{ Which of the following circuits will exhibit this?}$ 1 122 JEE MCQ NEW $\text{RL circuit with } R = 1 \text{ k} \Omega \text{ and } L = 10 \text{ mH}$, $\text{RL circuit with } R = 1 \text{ k} \Omega \text{ and } L = 1 \text{ mH}$... 4 Edit Delete
20566 $\text{A power transmission line feeds input power at } 2300 \text{ V to a step down transformer with its primary windings having } 4000 \text{ turns giving the output power at } 230 \text{ V. If the current in the primary of the transformer is } 5 \text{ A and its efficiency is } 90\%, \text{ the output current would be:}$ 1 122 JEE MCQ NEW $45 \text{ A}$, $50 \text{ A}$... 1 Edit Delete
20565 $\text{An ideal capacitor of capacitance } 0.2 \, \mu\text{F is charged to a potential difference of } 10 \, \text{V.}$ $\text{The charging battery is then disconnected.}$ $\text{The capacitor is connected to an ideal inductor of self inductance } 0.5 \, \text{mH.}$ $\text{The current at a time when the potential difference across the capacitor is } 5 \, \text{V is:}$ 1 122 JEE MCQ NEW $0.15 \, \text{A}$, $0.17 \, \text{A}$... 2 Edit Delete
20564 $\text{For an } LCR \text{ circuit driven with voltage of amplitude } V_m \text{ and frequency } \omega_0 = \frac{1}{\sqrt{LC}} \text{ the current exhibits resonance. The quality factor, } Q \text{ is given by:}$ 1 122 JEE MCQ NEW $\frac{\omega_0 L}{R}$, $\omega_0 R$... 1 Edit Delete
20563 $\text{A sinusoidal voltage of peak value } 283 \text{ V and angular frequency } 320 \text{ s}^{-1} \text{ is applied to a series LCR circuit. Given that } R = 5 \, \Omega, \, L = 25 \, \text{mH and } C = 1000 \, \mu\text{F. The total impedance, and phase difference between the voltage across the source and the current will respectively be:}$ 1 122 JEE MCQ NEW $10 \, \Omega \text{ and } \tan^{-1}\left(\frac{5}{3}\right)$, $10 \, \Omega \text{ and } \tan^{-1}\left(\frac{8}{3}\right)$... 4 Edit Delete
20562 $\text{Find the power factor of the given } AC \text{ circuit.}$ $L = \frac{1}{10\pi} \text{ H}$ $C = \frac{1}{1000\pi} \text{ F}$ $R = 10 \ \Omega$ 1 122 JEE MCQ NEW 0.75, 0.5... 3 Edit Delete
20561 $\text{If the primary side of a transformer is connected with } 230 \text{ V, } 50 \text{ Hz AC supply and the ratio of the number of turns of primary to the secondary winding is } 10 : 1. \text{ The load resistance at the secondary coil is } 46 \, \Omega, \text{ then the power output of the secondary windings is:}$ 1 122 JEE MCQ NEW $11.5 \text{ watt}$, $13 \text{ watt}$... 1 Edit Delete
20560 $\text{Given below are two statements:}$ $\text{Statement I: In a purely inductive circuit, the average power consumed is very high.}$ $\text{Statement II: In a purely inductive circuit only, resonance can be achieved.}$ 1 122 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 4 Edit Delete
20559 $\text{In a series } LCR \text{ circuit, the resistance } R, \text{ inductance } L, \text{ and}$ $\text{capacitance } C \text{ are } 10 \, \Omega, \, 0.1 \, \text{H, and } 2 \, \text{mF, respectively. If the}$ $\text{angular frequency of the AC source is } 100 \, \text{rad/s, the power factor of}$ $\text{the circuit is:}$ 1 122 JEE MCQ NEW $\frac{1}{\sqrt{5}}$, $\frac{2}{\sqrt{5}}$... 2 Edit Delete
20558 $\text{The variation of impedance } (Z) \text{ with angular frequency } (\omega) \text{ for two electrical elements is shown in the graph given.}$ $\text{If } X_L, X_C \text{ and } R \text{ are inductive reactance, capacitive reactance, and resistance respectively then:}$ 1 122 JEE MCQ NEW $A \text{ is resistor, } B \text{ is inductor}$, $A \text{ is inductor, } B \text{ is capacitor}$... 2 Edit Delete
20557 $\text{In an LC oscillating circuit with } L = 75 \text{ mH and } C = 30 \mu F. \text{ The maximum charge of capacitor is } 2.7 \times 10^{-4} C. \text{ Maximum current through the circuit will be:}$ 1 122 JEE MCQ NEW $0.18 \text{ Amp}$, $0.24 \text{ Amp}$... 1 Edit Delete
20556 $\text{Evaluate the maximum current flowing through the capacitor in the given AC circuit.}$ $C = 150 \, \mu\text{F}$ $E = 36 \sin(120 \, \pi t) \, \text{V}$ 1 122 JEE MCQ NEW 0.65 \pi \, \text{A}, 0.35 \pi \, \text{A}... 1 Edit Delete
20555 $\text{For a series } LCR \text{ circuit across an AC source, current and voltage are in the same phase. Given the resistance is } 20 \, \Omega \text{ and voltage of the source is } 220 \, V. \text{ What is the current in the circuit?}$ 1 122 JEE MCQ NEW $11 \, A$, $22 \, A$... 1 Edit Delete
20554 $\text{In the AC circuit shown in the figure, the value of } I_{\text{rms}} \text{ is equal to:}$ $X_C = 100 \, \Omega$ $X_L = 100 \, \Omega$ $R = 100 \, \Omega$ $V = 200 \sqrt{2} \sin(\omega t)$ 1 122 JEE MCQ NEW $2 \, \text{A}$, $2 \sqrt{2} \, \text{A}$... 1 Edit Delete
20553 $\text{For the given, } LCR \text{ series circuit;} \ X_L = 130 \, \Omega, \ X_C = 80 \, \Omega \text{ and } R = 80 \, \Omega. \text{ The value of the power factor of the circuit is:}$ 1 122 JEE MCQ NEW $\frac{\sqrt{54}}{9}$, $\frac{8}{\sqrt{89}}$... 2 Edit Delete
20552 $\text{Consider the following two } LC \text{ circuit.}$ $\text{If } \omega_1 \text{ and } \omega_2 \text{ are resonance frequencies of the two circuits. Then } \frac{\omega_1}{\omega_2} \text{ equal to:}$ 1 122 JEE MCQ NEW $4$, $3$... 1 Edit Delete
20551 $\text{The effective current } i \text{ in the given circuit at very high frequencies will be:}$ 1 122 JEE MCQ NEW $40 \text{ A}$, $24 \text{ A}$... 4 Edit Delete
20550 $\text{An inductor of } 0.5 \text{ mH, a capacitor of } 200 \ \mu\text{F and a resistor of } 2 \ \Omega$ $\text{are connected in series with a } 220 \ \text{V ac source. If the current is in}$ $\text{phase with the emf, the frequency of the ac source will be } x \times 10^2 \ \text{Hz.}$ $\text{The value of } x \text{ is:}$ 1 122 JEE MCQ NEW $5$, $10$... 1 Edit Delete
20549 $\text{An AC source is connected to an inductance of } 100 \text{ mH, a capacitance of } 100 \ \mu\text{F and resistance of } 120 \ \Omega \text{ as shown in the figure.}$ $\text{The time in which the resistance having a thermal capacity of } 2 \ \text{J/}^\circ\text{C will get heated by } 16^\circ\text{C is:}$ 1 122 JEE MCQ NEW $15 \ \text{s}$, $20 \ \text{s}$... 1 Edit Delete
20548 $\text{Match List I with List II.}$ $\text{List I:}$ \begin{array}{ll} \text{(A)} & \text{AC generator} \\ \text{(B)} & \text{Galvanometer} \\ \text{(C)} & \text{Transformer} \\ \text{(D)} & \text{Metal detector} \end{array}$ $\text{List II:}$ \begin{array}{ll} \text{(I)} & \text{detects the presence of current in the circuit} \\ \text{(II)} & \text{converts mechanical energy into electrical energy} \\ \text{(III)} & \text{works on the principle of resonance in AC circuits} \\ \text{(IV)} & \text{changes an alternating voltage for a smaller or greater value} \end{array}$ $\text{Choose the correct answer from the options given below:}$ 1 122 JEE MCQ NEW (A) - (II), \text{ } (B) - (I), \text{ } (C) - (IV), \text{ } (D) - (III), (A) - (II), \text{ } (B) - (I), \text{ } (C) - (III), \text{ } (D) - (IV)... 1 Edit Delete
20547 $\text{Given below are two statements:}$ $\text{Statement I: The reactance of an AC circuit is zero. It is possible that the circuit contains a capacitor and an inductor.}$ $\text{Statement II: In an AC circuit, the average power delivered by the source never becomes zero.}$ 1 122 JEE MCQ NEW $\text{Both Statement I and Statement II are True.}$, $\text{Both Statement I and Statement II are False.}$... 3 Edit Delete
20546 $\text{Find the peak current and resonant frequency of the following circuit}$ $\text{(as shown in the figure).}$ 1 122 JEE MCQ NEW $0.2 \text{ A and } 50 \text{ Hz}$, $0.2 \text{ A and } 100 \text{ Hz}$... 1 Edit Delete
20545 $\text{In a series } LCR \text{ resonant circuit, the quality factor } (Q) \text{ at resonance is measured as } 100.$ $\text{The inductance } (L) \text{ is increased two-fold } (L' = 2L), \text{ and the resistance } (R) \text{ is decreased two-fold } (R' = \frac{R}{2}), \text{ while the capacitance } (C) \text{ remains unchanged.}$ $\text{Assuming the new quality factor is calculated at the new resonance frequency of the modified circuit, then the new quality factor will be:}$ 1 122 JEE MCQ NEW $173.25$, $282.84$... 2 Edit Delete
20544 $\text{A transmitting station releases waves of wavelength } 960 \text{ m. A capacitor of } 2.56 \ \mu\text{F} \text{ is used in the resonant circuit. The self-inductance of the coil necessary for resonance is:}$ 1 122 JEE MCQ NEW $10 \times 10^{-8} \ \text{H}$, $5 \times 10^{-8} \ \text{H}$... 1 Edit Delete
20543 $\text{A resonance circuit having inductance and resistance } 2 \times 10^{-4} \text{ H}$ $\text{and } 6.28 \ \Omega \text{ respectively oscillates at } 10 \ \text{MHz frequency.}$ $\text{The value of quality factor of this resonator is: } [\pi = 3.14]$ 1 122 JEE MCQ NEW $1000$, $2000$... 2 Edit Delete
20542 $\text{In a series } L R \text{ circuit, a power of } 400 \text{ W is dissipated from a source}$ $\text{of } 250 \text{ V and } 50 \text{ Hz. The power factor of the circuit is } 0.8. \text{ To bring}$ $\text{the power factor to unity, a capacitor of value } \left( \frac{n}{3\pi} \right) \mu \text{F is added in}$ $\text{series with the } L \text{ and } R \text{ components. The value of } n \text{ is:}$ 1 122 JEE MCQ NEW $400$, $300$... 1 Edit Delete
20541 $A \ 750 \ \text{Hz}, \ 20 \ \text{V (RMS)} \ \text{source is connected to a resistance of} \ 100 \ \Omega, \ \text{an inductance of} \ 0.1803 \ \text{H and a capacitance of} \ 10 \ \mu\text{F, all in series. The time in which the resistance (heat capacity} \ 2 \ \text{J/}^\circ\text{C)} \ \text{will get heated by} \ 10^\circ\text{C (assuming no loss of heat to the surroundings) is close to:}$ 1 122 JEE MCQ NEW $365 \ \text{s}$, $418 \ \text{s}$... 4 Edit Delete
20540 $\text{An inductance coil has a reactance of } 100 \, \Omega. \text{ When an AC signal of frequency } 1000 \, \text{Hz is applied to the coil, the applied voltage leads the current by } 45^\circ. \text{ The self-inductance of the coil is:}$ 1 122 JEE MCQ NEW $1.1 \times 10^{-2} \, \text{H}$, $1.1 \times 10^{-1} \, \text{H}$... 1 Edit Delete
20539 $\text{An alternating voltage } V(t) = 220 \sin(100\pi t) \text{ volts is applied to a purely resistive load of } 50 \, \Omega. \text{ The time taken for the current to rise from half of the peak value to the peak value is:}$ $1. \, 5 \, \text{ms}$ $2. \, 7.2 \, \text{ms}$ $3. \, 3.3 \, \text{ms}$ $4. \, 2.2 \, \text{ms}$ 1 122 JEE MCQ NEW $5 \, \text{ms}$, $7.2 \, \text{ms}$... 3 Edit Delete
20538 $\text{In an ac circuit, the instantaneous e.m.f. and current are given by}$ $e = 100 \sin 30t$ $i = 20 \sin \left(30t - \frac{\pi}{4}\right)$ $\text{In one cycle of ac, the average power consumed by the circuit and the wattless current are, respectively:}$ 1 122 JEE MCQ NEW $50, 10$, $\frac{1000}{\sqrt{2}}, 10$... 2 Edit Delete
20537 $\text{For the LCR circuit, shown here, the current is observed to lead the applied voltage. An additional capacitor } C', \text{ when joined with the capacitor } C \text{ present in the circuit, makes the power factor of the circuit unity. The capacitor } C', \text{ must have been connected in:}$ $V = V_0 \sin \omega t$ 1 122 JEE MCQ NEW $\text{series with } C \text{ and has a magnitude } \frac{C}{\omega^2 LC - 1}$, $\text{series with } C \text{ and has a magnitude } \frac{1 - \omega^2 LC}{\omega^2 L}$... 3 Edit Delete
20536 $\text{In the given circuits } (a) \text{ and } (b) \text{ switches } S_1 \text{ and } S_2 \text{ are closed at } t = 0 \text{ and are kept closed for a long time.}$ $\text{The variation of currents in the two circuits for } t \geq 0 \text{ are roughly shown by (figures are schematic and not drawn to scale):}$ 1 122 JEE MCQ NEW $\text{Graph 1: } (b) \text{ decreases, } (a) \text{ increases}$, $\text{Graph 2: } (b) \text{ increases, } (a) \text{ decreases}$... 4 Edit Delete
20535 $\text{A square loop of side } 15 \text{ cm being moved towards right at a constant speed of } 2 \text{ cm/s as shown in figure. The front edge enters the } 50 \text{ cm wide magnetic field at } t = 0. \text{ The value of induced emf in the loop at } t = 10 \text{ s will be:}$ 1 121 JEE MCQ NEW $4.5 \text{ mV}$, $3 \text{ mV}$... 4 Edit Delete
20534 $\text{In a coil, the current changes from } -2 \text{ A to } +2 \text{ A in } 0.2 \text{ s and induces an emf } 0.1 \text{ V. The self-inductance of the coil is:}$ 1 121 JEE MCQ NEW $4 \text{ mH}$, $5 \text{ mH}$... 2 Edit Delete
20533 $\text{A conducting rod moves in a uniform magnetic field as shown in the figure.}$ $\text{The induced EMF across the ends of the rod is:}$ 1 121 JEE MCQ NEW $3 \text{ mV}$, $6 \text{ mV}$... 1 Edit Delete
20532 $\text{A metallic frame of a given dimension has an area vector at } 60^\circ \text{ with an external magnetic field as shown. The frame is taken out from the field in 10 seconds. Then emf is induced in the frame is:}$ $\text{B} = 4 \text{ T}$ $\text{Area} = 2.5 \text{ m} \times 2 \text{ m}$ 1 121 JEE MCQ NEW $1 \text{ V}$, $2 \text{ V}$... 1 Edit Delete
20531 $\text{A circular ring is placed in a magnetic field of } 0.4 \text{ T. Suddenly its radius starts shrinking at the rate of } 1 \text{ mm/s. What will be the induced EMF in the ring at } r = 2 \text{ cm?}$ 1 121 JEE MCQ NEW $16\pi \ \mu\text{V}$, $8\pi \ \mu\text{V}$... 1 Edit Delete
20530 $\text{Consider the following Assertion and Reason:}$ $\text{Assertion (A): Moving magnet in conducting pipe slows down.}$ $\text{Reason (R): Because eddy current is formed.}$ 1 121 JEE MCQ NEW $\text{(A) is correct but (R) is wrong.}$, $\text{Both (A) and (R) are wrong.}$... 3 Edit Delete
20529 $\text{The EMF generated in a moving rod within a uniform magnetic field } B \text{ is } 0.08 \text{ V. The speed } (v) \text{ of the rod is:}$ $\otimes B = 0.4 \text{ T}$ 1 121 JEE MCQ NEW $1 \text{ m/s}$, $2 \text{ m/s}$... 2 Edit Delete
20528 $\text{A metal rod of length } 1 \text{ m is moving perpendicular to its length with } 8 \text{ m/s velocity along the positive } x\text{-axis. A magnetic field } B = 2 \text{ T exists perpendicular to the plane of motion. The EMF induced between the two ends of the rod is:}$ $1. \ 16 \text{ V}$ $2. \ 0 \text{ V}$ $3. \ 8 \text{ V}$ $4. \ 4 \text{ V}$ 1 121 JEE MCQ NEW $16 \text{ V}$, $0 \text{ V}$... 1 Edit Delete
20527 $\text{A coil of inductance 1 H and resistance 100 } \Omega \text{ is connected to a battery of 6 V. Determine approximately:}$ $\text{I. The time elapsed before the current acquires half of its steady-state value.}$ $\text{II. The energy stored in the magnetic field associated with the coil at an instant 15 ms after the circuit is switched on.}$ $\text{(Given: } \ln 2 = 0.693, \frac{e^{-3}}{2} = 0.25)$ 1 121 JEE MCQ NEW $t = 10 \text{ ms}; U = 2 \text{ mJ}$, $t = 10 \text{ ms}; U = 1 \text{ mJ}$... 3 Edit Delete
20526 $\text{A conducting circular loop is placed in the } X-Y \text{ plane in presence of a magnetic field } \vec{B} = \left(3t^3 \hat{j} + 3t^2 \hat{k}\right) \text{ in SI unit. If the radius of the loop is } 1 \text{ m, the induced emf in the loop, at time, } t = 2 \text{ s is } n\pi \text{ V. The value of } n \text{ is:}$ 1 121 JEE MCQ NEW $12$, $14$... 1 Edit Delete
20525 $\text{In a coil of resistance } 8 \, \Omega, \text{ the magnetic flux due to an external magnetic field varies with time as } \phi = \frac{2}{3} (9 - t^2). \text{ The value of total heat produced in the coil, till the flux becomes zero, will be:}$ $1. \, 2 \, \text{J}$ $2. \, 1 \, \text{J}$ $3. \, 3 \, \text{J}$ $4. \, 4 \, \text{J}$ 1 121 JEE MCQ NEW $2 \, \text{J}$, $1 \, \text{J}$... 1 Edit Delete
20524 $\text{Magnetic flux (in weber) in a closed circuit of resistance } 20 \, \Omega \text{ varies with time } t(s) \text{ as } \phi = 8t^2 - 9t + 5.$ $\text{The magnitude of the induced current at } t = 0.25 \, s \text{ will be:}$ 1 121 JEE MCQ NEW $150 \, \text{mA}$, $300 \, \text{mA}$... 3 Edit Delete
20523 $\text{A coil is placed in a time varying magnetic field. If the number of turns in the coil were to be halved and the radius of wire doubled, the electrical power dissipated due to the current induced in the coil would be: (Assume the coil to be short circuited.)}$ 1 121 JEE MCQ NEW $\text{Halved}$, $\text{Quadrupled}$... 4 Edit Delete
20522 $\text{A metallic rod of length } 20 \text{ cm is placed in a North-South direction}$ $\text{and is moved at a constant speed of } 20 \text{ m/s towards the East.}$ $\text{The horizontal component of the Earth's magnetic field at that place is } 4 \times 10^{-3} \text{ T}$ $\text{and the angle of dip is } 45^\circ. \text{ The emf induced in the rod is:}$ 1 121 JEE MCQ NEW $12 \text{ V}$, $14 \text{ V}$... 3 Edit Delete
20521 $\text{A metallic conductor of length } 1 \text{ m rotates in a vertical plane parallel to the east-west direction about one of its ends with an angular velocity of } 5 \text{ rad/s.}$ $\text{If the horizontal component of earth's magnetic field is } 0.2 \times 10^{-4} \text{ T, then emf induced between the two ends of the conductor is:}$ 1 121 JEE MCQ NEW $5 \ \mu\text{V}$, $50 \ \mu\text{V}$... 2 Edit Delete
20520 $\text{Two coils of self-inductance } L_1 \text{ and } L_2 \text{ are connected in series}$ $\text{combination having a mutual inductance of the coils as } M. \text{ The}$ $\text{equivalent self-inductance of the combination will be:}$ 1 121 JEE MCQ NEW $\frac{1}{L_1} + \frac{1}{L_2} + \frac{1}{M}$, $L_1 + L_2 + M$... 4 Edit Delete
20519 $A \ 10 \, \Omega, \, 20 \, \text{mH} \text{ coil carrying constant current is connected to a battery of } 20 \, \text{V through a switch.}$ $\text{When the switch is opened, the current becomes zero in } 100 \, \mu s.$ $\text{The average emf induced in the coil is:}$ 1 121 JEE MCQ NEW $100 \, \text{V}$, $250 \, \text{V}$... 3 Edit Delete
20518 $\text{The magnetic flux through a coil perpendicular to its plane is varying according to the relation } \phi = (5t^3 + 4t^2 + 2t - 5) \text{ Wb. If the resistance of the coil is } 5 \, \Omega, \text{ then the induced current through the coil at } t = 2 \, \text{s will be:}$ $1. \, 15.6 \, \text{A}$ $2. \, 16.6 \, \text{A}$ $3. \, 17.6 \, \text{A}$ $4. \, 18.6 \, \text{A}$ 1 121 JEE MCQ NEW $15.6 \, \text{A}$, $16.6 \, \text{A}$... 1 Edit Delete
20517 $\text{The current in a coil of self-inductance } 2.0 \text{ H is increasing according to equation } I = 2 \sin t^2 \text{ A. The amount of energy spent during the period when the current changes from } 0 \text{ to } 2 \text{ A is:}$ 1 121 JEE MCQ NEW $4 \text{ J}$, $3 \text{ J}$... 1 Edit Delete
20516 $\text{A circular coil of } 1000 \text{ turns each with an area of } 1 \text{ m}^2 \text{ is rotated}$ $\text{about its vertical diameter at the rate of one revolution per second in}$ $\text{a uniform horizontal magnetic field of } 0.07 \text{ T. The maximum voltage}$ $\text{generation will be:}$ 1 121 JEE MCQ NEW $220 \text{ V}$, $330 \text{ V}$... 3 Edit Delete
20515 $\text{A conducting circular loop made of a thin wire has area } 3.5 \times 10^{-3} \text{ m}^2 \text{ and resistance } 10 \, \Omega. \text{ It is placed perpendicular to a time-dependent magnetic field } B(t) = 0.4 \sin(50 \pi t) \, \text{T. The field is uniform in space. Then the net charge flowing through the loop during } t = 0 \, \text{s and } t = 10 \, \text{ms is close to:}$ 1 121 JEE MCQ NEW $0.14 \, \text{mC}$, $0.7 \, \text{mC}$... 1 Edit Delete
20514 $\text{Two coil } 'P' \text{ and } 'Q' \text{ are separated by some distance. When a current of } 3 \text{ A flows through coil } 'P' \text{ a magnetic flux of } 10^{-3} \text{ Wb passes through } 'Q'. \text{ No current is passed through } 'Q'. \text{ When no current passes through } 'P' \text{ and a current of } 2 \text{ A passes through } 'Q', \text{ the flux through } 'P' \text{ is:}$ 1 121 JEE MCQ NEW $6.67 \times 10^{-3} \text{ Wb}$, $3.67 \times 10^{-4} \text{ Wb}$... 3 Edit Delete
20513 $\text{The total number of turns and the cross-sectional area of a solenoid are fixed. However, its length } L \text{ is varied by adjusting the separation between the windings. The inductance of the solenoid will be proportional to:}$ 1 121 JEE MCQ NEW $L$, $L^2$... 4 Edit Delete
20512 $\text{A coil of cross-sectional area } A \text{ having } n \text{ turns is placed in a uniform magnetic field } B. \text{ When it is rotated with an angular velocity } \omega \text{ the maximum e.m.f. induced in the coil will be:}$ 1 121 JEE MCQ NEW $\frac{3}{2} n B A \omega$, $3 n B A \omega$... 3 Edit Delete
20511 $\text{A small circular loop of wire of radius } a \text{ is located at the centre of a much larger circular wire loop of radius } b. \text{ The two loops are in the same plane. The outer loop of radius } b \text{ carries an alternating current } I = I_0 \cos(\omega t). \text{ The emf induced in the smaller inner loop is:}$ 1 121 JEE MCQ NEW $\frac{\pi \mu_0 I_0 b^2 \omega \cos(\omega t)}{a}$, $\frac{\pi \mu_0 I_0 a^2 \omega \sin(\omega t)}{2b}$... 2 Edit Delete
20510 $\text{When the current in a coil changes from } 5 \text{ A to } 2 \text{ A in } 0.1 \text{ s, the average voltage of } 50 \text{ V is produced. The self-inductance of the coil is:}$ 1 121 JEE MCQ NEW $1.67 \text{ H}$, $6 \text{ H}$... 1 Edit Delete
20509 $\text{In given L-R circuit connected with a D.C source of 12V, inductance is LmH and resistances is 6 } \Omega. \text{ If the emf induced in the inductor at } t = 1 \text{ms is 10V, value of L is:}$ 1 121 JEE MCQ NEW $\frac{3}{\ln(1.2)}$, $\frac{6}{\ln(1.2)}$... 2 Edit Delete
20508 $\text{A cube with side length } 25 \text{ cm is moving with a uniform velocity of } 8 \text{ m/s in the positive } y\text{-direction, as shown in the figure.}$ $\text{The cube is placed in a uniform magnetic field of } 1 \text{ T, which is directed along the negative } z\text{-axis.}$ $\text{The magnitude of the induced EMF across the opposite faces of the cube is:}$ 1 121 JEE MCQ NEW $2 \text{ V}$, $4 \text{ V}$... 1 Edit Delete
20507 $\text{Variation of the magnetic field through a coil of area } 4 \text{ m}^2 \text{ is shown in the figure. What is the emf induced in the coil (in mV)?}$ 1 121 JEE MCQ NEW $8 \text{ mV}$, $16 \text{ mV}$... 1 Edit Delete
20506 $\text{In a part of the circuit, as shown, it is given that the current is decreasing at a rate of } 1 \text{ A/s. Then } V_A - V_B \text{ is equal to:}$ 1 121 JEE MCQ NEW $18 \text{ V}$, $-18 \text{ V}$... 1 Edit Delete
20505 $\text{The magnetic field through a circular loop is } 0.8 \text{ T.}$ $\text{The radius of the loop is expanding at the rate of } 2 \text{ cm/s.}$ $\text{The induced emf in the loop, when the radius of the loop is } 10 \text{ cm is:}$ 1 121 JEE MCQ NEW $32 \times 10^{-4} \text{ V}$, $16 \times 10^{-4} \text{ V}$... 1 Edit Delete
20504 $\text{A small circular loop of radius } r \text{ is placed in the plane of a square loop of side length } L \ (r \ll L).$ $\text{A circular loop is at the center of the square as shown in the figure.}$ $\text{The mutual inductance of the given system is:}$ 1 121 JEE MCQ NEW $\frac{\mu_0 r^2}{\sqrt{2}L}$, $\frac{\pi \mu_0 r^2}{2L}$... 3 Edit Delete
20503 $\text{A circular loop of radius } \frac{10}{\sqrt{\pi}} \text{ cm is placed in a linearly varying}$ $\text{perpendicular magnetic field which has magnitude } 0.5 \text{ T at time } t = 0.$ $\text{The magnetic field reduces to zero at } t = 0.5 \text{ s. The emf}$ $\text{induced in the loop at } t = 0.25 \text{ s is:}$ $\text{(where } r \text{ is the radius of the circular loop)}$ 1 121 JEE MCQ NEW 0.01 \text{ V}, 0.005 \text{ V}... 1 Edit Delete
20502 $\text{A small square loop of wire of side } \ell \text{ is placed inside a large square loop of wire } L \ (L \gg \ell).$ $\text{Both loops are coplanar and their centres coincide at point } O \text{ as shown in the figure.}$ $\text{The mutual inductance of the system is:}$ 1 121 JEE MCQ NEW $\frac{2\sqrt{2}\mu_0L^2}{\pi \ell}$, $\frac{\mu_0\ell^2}{2\sqrt{2}\pi L}$... 3 Edit Delete
20501 $\text{A coil of inductance } 2 \text{ H having negligible resistance is connected to a source of supply whose voltage is given by } V = 3t \text{ volt.}$ $\text{(where } t \text{ is in second). If the voltage is applied when } t = 0, \text{ then the energy stored in the coil after } 4 \text{ s is:}$ 1 121 JEE MCQ NEW $73 \text{ J}$, $36 \text{ J}$... 3 Edit Delete
20500 $\text{The current } (i) \text{ at time } t = 0 \text{ and } t = \infty \text{ respectively for the given circuit is:}$ 1 121 JEE MCQ NEW $\frac{18E}{55}, \frac{5E}{10}$, $\frac{33}{5E}, \frac{18E}{5}$... 4 Edit Delete
20499 $\text{Figure shows a circuit that contains four identical resistors with resistance } R = 2.0 \, \Omega, \text{ two identical inductors with inductance } L = 2.0 \, \text{mH and an ideal battery with emf } E = 9 \, \text{V. The current } 'i' \text{ just after the switch 's' is closed will be:}$ 1 121 JEE MCQ NEW $2.25 \, \text{A}$, $3.0 \, \text{A}$... 1 Edit Delete
20498 $\text{A part of a complete circuit is shown in the figure. At a certain instant, the current } I \text{ is } 1 \text{ A and is decreasing at a rate of } 10^2 \text{ A s}^{-1}. \text{ The value of the potential difference } V_P - V_Q, \text{ (in volts) at that instant is:}$ $L = 50 \text{ mH} \quad I \quad 30 \text{ V} \quad R = 2 \Omega$ 1 121 JEE MCQ NEW $10$, $25$... 3 Edit Delete
20497 $\text{An infinitely long straight wire carrying current } I, \text{ one side opened rectangular loop and a conductor } C \text{ with a sliding connector are located in the same plane, as shown in the figure. The connector has length } l \text{ and resistance } R. \text{ It slides to the right with a velocity } v. \text{ The resistance of the conductor and the self inductance of the loop are negligible. The induced current in the loop, as a function of separation } r, \text{ between the connector and the straight wire is:}$ 1 121 JEE MCQ NEW $\frac{\mu_0}{\pi} \frac{Ivl}{Rr}$, $\frac{\mu_0}{2\pi} \frac{Ivl}{Rr}$... 2 Edit Delete
20496 $\text{Two concentric circular coils, } C_1 \text{ and } C_2, \text{ are placed in the } XY \text{ plane.}$ $C_1 \text{ has } 500 \text{ turns, and a radius of } 1 \text{ cm.}$ $C_2 \text{ has } 200 \text{ turns and radius of } 20 \text{ cm.}$ $C_2 \text{ carries a time dependent current } I(t) = (5t^2 - 2t + 3) \text{ A where } t \text{ is in } s.$ $\text{The emf induced in } C_1 \text{ (in mV), at the instant } t = 1 \text{ s is } \frac{4}{x}. \text{ The value of } x \text{ is:}$ 1 121 JEE MCQ NEW 1, 5... 2 Edit Delete
20495 $\text{A series } L-R \text{ circuit is connected to a battery of emf } V. \text{ If the circuit is switched on at } t = 0, \text{ then the time at which the energy stored in the inductor reaches } \left(\frac{1}{n}\right) \text{ times of its maximum value, is:}$ 1 121 JEE MCQ NEW $\frac{L}{R} \ln \left(\frac{\sqrt{n-1}}{\sqrt{n}}\right)$, $\frac{L}{R} \ln \left(\frac{\sqrt{n}}{\sqrt{n-1}}\right)$... 2 Edit Delete
20494 $\text{A small bar magnet is moved through a coil at constant speed from one end to the other.}$ $\text{Which of the following series of observations will be seen on the galvanometer } G \text{ attached across the coil?}$ 1 121 JEE MCQ NEW $(a) \uparrow \rightarrow (b) \uparrow \rightarrow (c) \uparrow$, $(a) \nearrow \rightarrow (b) \uparrow \rightarrow (c) \nwarrow$... 2 Edit Delete
20493 $\text{A uniform magnetic field } B \text{ exists in a direction perpendicular to the plane of a square loop made of a metal wire.}$ $\text{The wire has a diameter of } 4 \text{ mm and a total length of } 30 \text{ cm.}$ $\text{The magnetic field changes with time at a steady rate } \frac{dB}{dt} = 0.032 \text{ T s}^{-1}. \text{ The induced current in the loop is close to: (the resistivity of the metal wire is } 1.23 \times 10^{-8} \, \Omega \text{m})$ 1 121 JEE MCQ NEW $0.34 \, \text{A}$, $0.53 \, \text{A}$... 3 Edit Delete
20492 $\text{An elliptical loop with resistance } R, \text{ semi-major axis } a, \text{ and semi-minor axis } b \text{ is placed in a magnetic field as shown in the figure. If the loop is rotated about the } x\text{-axis with an angular frequency } \omega, \text{ the average power loss in the loop due to Joule heating is:}$ 1 121 JEE MCQ NEW $\text{zero}$, $\frac{\pi^2 a^2 b^2 B^2 \omega^2}{R}$... 3 Edit Delete
20491 $\text{A circular coil of radius } 10 \text{ cm is placed in a uniform magnetic field of } 3.0 \times 10^{-5} \text{ T with its plane perpendicular to the field initially.}$ $\text{It is rotated at constant angular speed about an axis along the diameter of coil and perpendicular to magnetic field so that it undergoes half of rotation in } 0.2 \text{ s.}$ $\text{The maximum value of EMF induced (in } \mu \text{V) in the coil will be close to:}$ 1 121 JEE MCQ NEW $5$, $10$... 3 Edit Delete
20490 $\text{Consider the } LR \text{ circuit shown in the figure. If the switch } S \text{ is closed at } t = 0 \text{ then the amount of charge that passes through the battery between } t = 0 \text{ and } t = \frac{L}{R} \text{ is:}$ 1 121 JEE MCQ NEW $\frac{7.3EL}{R^2}$, $\frac{2.7EL}{R^2}$... 4 Edit Delete
20489 $\text{The figure shows a square loop } L \text{ with a side length of } 5 \text{ cm, which is connected to a network of resistances.}$ $\text{The entire setup is moving to the right with a constant speed of } 1 \text{ cm/s.}$ $\text{At a certain instant, a part of the loop } L \text{ is in a uniform magnetic field of } 1 \text{ T, perpendicular to the plane of the loop.}$ $\text{If the resistance of the loop is } 1.7 \, \Omega, \text{ the current in the loop at that instant will be close to:}$ 1 121 JEE MCQ NEW $115 \, \mu\text{A}$, $150 \, \mu\text{A}$... 3 Edit Delete
20488 $\text{A coil of self inductance } 10 \ \text{mH} \text{ and resistance } 0.1 \ \Omega \text{ is connected through a switch to a battery of internal resistance } 0.9 \ \Omega. \text{ After the switch is closed, the time taken for the current to attain } 80\% \text{ of the saturation value is: [take } \ln 5 = 1.6]$ 1 121 JEE MCQ NEW $0.324 \ \text{s}$, $0.002 \ \text{s}$... 4 Edit Delete
20487 $\text{A very long solenoid of radius } R \text{ is carrying current}$ $I(t) = kte^{-\alpha t}(k > 0), \text{ as a function of time } (t \geq 0).$ $\text{Counter clockwise current is taken to be positive.}$ $\text{A circular conducting coil of radius } 2R \text{ is placed in the equatorial plane of the solenoid and concentric with the solenoid.}$ $\text{The current induced in the outer coil is correctly depicted, as a function of time, by:}$ 1 121 JEE MCQ NEW $\text{Option 1: Graph with initial positive peak}$, $\text{Option 2: Graph with initial negative peak}$... 2 Edit Delete
20486 $\text{A 20 Henry inductor and coil is connected to a 10 } \Omega \text{ resistance in series as shown in the figure.}$ $\text{The time at which the rate of dissipation of energy (Joule's heat) across the resistance is equal to the rate at which magnetic energy is stored in the inductor, is:}$ 1 121 JEE MCQ NEW $\frac{1}{2} \ln 2$, $\ln 2$... 3 Edit Delete
20485 2 1 121 JEE MCQ NEW 1, 2... 1 Edit Delete
20484 $\text{In the circuit shown here, the point } C \text{ is kept connected to point } A \text{ till the current flowing through the circuit becomes constant.}$ $\text{Afterward, suddenly, point } C \text{ is disconnected from point } A \text{ and connected to point } B \text{ at time } t = 0.}$ $\text{The ratio of the voltage across resistance and the inductor at } t = \frac{L}{R} \text{ will be equal to:}$ 1 121 JEE MCQ NEW $1$, $\frac{-1}{1-e}$... 2 Edit Delete
20483 $\text{Paramagnetic substances:}$ $\text{A. align themselves along the directions of external magnetic field.}$ $\text{B. attract strongly towards external magnetic field.}$ $\text{C. has susceptibility little more than zero.}$ $\text{D. move from a region of strong magnetic field to weak magnetic field.}$ $\text{Choose the most appropriate answer from the options given below:}$ 1 120 JEE MCQ NEW $\text{A, C only}$, $\text{B, D only}$... 1 Edit Delete
20482 $\text{Match List-I with List-II}$ $\text{List - I}$ \begin{array}{|c|c|} \hline \text{A} & Y = \text{magnetic susceptibility} \\ & X = \text{magnetizing field} \\ \hline \text{B} & Y = \text{magnetic field} \\ & X = \text{distance from centre of a current carrying wire for } x < a \text{ (where } a = \text{radius of wire)} \\ \hline \text{C} & Y = \text{magnetic field} \\ & X = \text{distance from centre of a current carrying wire for } x > a \text{ (where } a = \text{radius of wire)} \\ \hline \text{D} & Y = \text{magnetic field inside solenoid} \\ & X = \text{distance from centre} \\ \hline \end{array}$ $\text{List - II}$ \begin{array}{|c|c|} \hline \text{I} & \text{Graph: Linear increase} \\ \hline \text{II} & \text{Graph: Decrease then constant} \\ \hline \text{III} & \text{Graph: Constant} \\ \hline \text{IV} & \text{Graph: Exponential decay} \\ \hline \end{array}$ $\text{Choose the correct answer from the options given below:}$ 1 120 JEE MCQ NEW $(\text{A}-(\text{III}), \text{B}-(\text{I}), \text{C}-(\text{IV}), \text{D}-(\text{II}))$, $(\text{A}-(\text{III}), \text{B}-(\text{IV}), \text{C}-(\text{I}), \text{D}-(\text{II}))$... 1 Edit Delete
20481 $\text{The magnetic moment of a bar magnet is } 0.5 \text{ Am}^2. \text{ It is suspended in a uniform magnetic field of } 8 \times 10^{-2} \text{ T. The work done in rotating it from its most stable to most unstable position is } -$ $1. \ 16 \times 10^{-2} \text{ J}$ $2. \ \text{zero}$ $3. \ 8 \times 10^{-2} \text{ J}$ $4. \ 4 \times 10^{-2} \text{ J}$ 1 120 JEE MCQ NEW $16 \times 10^{-2} \text{ J}$, $\text{zero}$... 3 Edit Delete
20480 $\text{A dipole having moment } M \text{ is placed in two magnetic fields of strength } B_1 \text{ and } B_2 \text{ respectively.}$ $\text{If the dipole oscillates 60 times in 20 s in } B_1 \text{ and 60 oscillations in 30 s in } B_2 . \text{ Then } \frac{B_1}{B_2} =$ 1 120 JEE MCQ NEW $\frac{3}{2}$, $\frac{2}{3}$... 4 Edit Delete
20479 $\text{Consider the two statements:}$ $\text{Statement-I: Electromagnet are made of soft iron.}$ $\text{Statement-II: Soft iron has lower permeability and high retentivity.}$ $\text{Choose the correct option related to statements provided.}$ 1 120 JEE MCQ NEW $\text{Statement-I is true and statement-II is true}$, $\text{Statement-I is true and statement-II is false}$... 2 Edit Delete
20478 $\text{The vertical component of the earth's magnetic field is } 6 \times 10^{-5} \text{ T at any place where the angle of dip is } 37^\circ. \text{ The earth's resultant magnetic field at that place will be:}$ $\text{(Given } \tan 37^\circ = \frac{3}{4})$ 1 120 JEE MCQ NEW $8 \times 10^{-5} \text{ T}$, $6 \times 10^{-5} \text{ T}$... 4 Edit Delete
20477 $\text{A magnet hung at } 45^\circ \text{ with a magnetic meridian makes an angle of } 60^\circ \text{ with the horizontal. The actual value of the angle of dip is:}$ 1 120 JEE MCQ NEW $\tan^{-1}\left(\sqrt{\frac{3}{2}}\right)$, $\tan^{-1}\left(\sqrt{6}\right)$... 1 Edit Delete
20476 $\text{Two bar magnets oscillate in a horizontal plane in earth's magnetic field with time periods of } 3 \text{ s and } 4 \text{ s respectively. If their moments of inertia are in the ratio of } 3 : 2 \text{ then the ratio of their magnetic moments will be:}$ 1 120 JEE MCQ NEW $2 : 1$, $8 : 3$... 2 Edit Delete
20475 $\text{At a certain place, the angle of dip is } 30^\circ \text{ and the horizontal component of the earth's magnetic field is } 0.5 \text{ G. The earth's total magnetic field (in G), at that certain place, is:}$ 1 120 JEE MCQ NEW $\frac{1}{\sqrt{3}}$, $\frac{1}{2}$... 1 Edit Delete
20474 $\text{The susceptibility of a paramagnetic material is } 99. \text{ The permeability of the material in Wb/A-m is:}$ $\text{(Permeability of free space, } \mu_0 = 4\pi \times 10^{-7} \text{ Wb/A-m)}$ 1 120 JEE MCQ NEW $4\pi \times 10^{-7}$, $4\pi \times 10^{-4}$... 3 Edit Delete
20473 $\text{A bar magnet having a magnetic moment of } 2.0 \times 10^5 \text{ JT}^{-1} \text{ is placed along the direction of the uniform magnetic field of magnitude, } B = 14 \times 10^{-5} \text{ T. The work done in rotating the magnet slowly through } 60^\circ \text{ from the direction of the field is:}$ 1 120 JEE MCQ NEW $14 \text{ J}$, $8.4 \text{ J}$... 1 Edit Delete
20472 $\text{The soft-iron is a suitable material for making an electromagnet. This is because soft iron has:}$ $1. \text{ low coercivity and high retentivity.}$ $2. \text{ low coercively and low permeability.}$ $3. \text{ high permeability and low retentivity.}$ $4. \text{ high permeability and high retentivity.}$ 1 120 JEE MCQ NEW $\text{low coercivity and high retentivity.}$, $\text{low coercively and low permeability.}$... 4 Edit Delete
20471 $\text{In a ferromagnetic material, below the curie temperature, a domain is defined as:}$ 1 120 JEE MCQ NEW $\text{a macroscopic region with zero magnetization.}$, $\text{a macroscopic region with consecutive magnetic dipoles oriented in opposite directions.}$... 4 Edit Delete
20470 $\text{A soft ferromagnetic material is placed in an external magnetic field.}$ $\text{The magnetic domains:}$ 1 120 JEE MCQ NEW $\text{increase in size but no change in orientation}$, $\text{have no relation with an external magnetic field}$... 4 Edit Delete
20469 $\text{A small bar magnet placed with its axis at } 30^\circ \text{ with an external field of } 0.06 \text{ T experiences a torque of } 0.018 \text{ Nm. The minimum work required to rotate it from its stable to unstable equilibrium position is:}$ 1 120 JEE MCQ NEW $7.2 \times 10^{-2} \text{ J}$, $11.7 \times 10^{-3} \text{ J}$... 1 Edit Delete
20468 $\text{A perfectly diamagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is placed in a uniform magnetic field } \vec{B}. \text{ Then the field inside the paramagnetic substance is:}$ 1 120 JEE MCQ NEW $\text{Zero}$, $\vec{B}$... 1 Edit Delete
20467 $\text{Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T) have different properties of the following, which property best matches for the type of magnet required?}$ 1 120 JEE MCQ NEW $\text{T : Large retentivity, small coercivity}$, $\text{P : Small retentivity, large coercivity}$... 4 Edit Delete
20466 $\text{A bar magnet is demagnetized by inserting it inside a solenoid of length } 0.2 \text{ m, } 100 \text{ turns, and carrying a current of } 5.2 \text{ A. The coercivity of the bar magnet is:}$ 1 120 JEE MCQ NEW $285 \text{ A/m}$, $2600 \text{ A/m}$... 2 Edit Delete
20465 $\text{The } B-H \text{ curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solenoid with } 1000 \text{ turns/cm.}$ $\text{The current that should be passed in the solenoid to demagnetise the ferromagnet completely is:}$ 1 120 JEE MCQ NEW $2 \text{ mA}$, $20 \mu\text{A}$... 3 Edit Delete
20464 $A \ 25 \ \text{cm long solenoid has radius} \ 2 \ \text{cm and} \ 500 \ \text{total number of turns.}$ $\text{It carries a current of} \ 15 \ \text{A. If it is equivalent to a magnet of the same size and magnetization} \ \vec{M} \ (\text{magnetic moment/volume}),$ $\text{then the value of} \ |\vec{M}| \ \text{is:}$ 1 120 JEE MCQ NEW $3\pi \ \text{Am}^{-1}$, $30000\pi \ \text{Am}^{-1}$... 4 Edit Delete
20463 $\text{Given below two statements:}$ $\text{Statement I: For diamagnetic substances, } -1 \leq \chi < 0, \text{ where } \chi \text{ is the magnetic susceptibility.}$ $\text{Statement II: Diamagnetic substances, when placed in an external magnetic field, tend to move from the stronger to the weaker part of the field.}$ 1 120 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 1 Edit Delete
20462 $\text{A bar magnet with a magnetic moment of } 5 \ \text{Am}^2 \text{ is initially in a stable equilibrium within a uniform external magnetic field of } 0.4 \ \text{T.}$ $\text{The work required to slowly rotate the bar magnet into a position of unstable equilibrium is:}$ 1 120 JEE MCQ NEW $1 \ \text{J}$, $2 \ \text{J}$... 4 Edit Delete
20461 $\text{A compass needle of oscillation magnetometer oscillates 20 times per minute at a place } P \text{ of dip } 30^\circ. \text{ The number of oscillations per minute becomes 10 at another place } Q \text{ of } 60^\circ \text{ dip. The ratio of the total magnetic field at the two places: } (B_Q : B_P) \text{ is:}$ 1 120 JEE MCQ NEW $\sqrt{3} : 4$, $4 : \sqrt{3}$... 1 Edit Delete
20460 $\text{Two magnetic dipoles, } X \text{ and } Y, \text{ are separated by a distance } d, \text{ with their axes oriented perpendicular to each other.}$ $\text{The dipole moment of } Y \text{ is twice that of } X. \text{A charged particle with charge } q \text{ moves with velocity } v \text{ through their midpoint } P, \text{ which makes an angle } \theta = 45^\circ \text{ with the horizontal axis, as shown in the diagram.}$ $\text{Assuming } d \text{ is much larger than the dimensions of the dipoles, the magnitude of the force acting on the charged particle at this instant is:}$ 1 120 JEE MCQ NEW $\left( \frac{\mu_0}{4\pi} \right) \left( \frac{M}{\left( \frac{d}{2} \right)^3} \right) \times qv$, $\sqrt{2} \left( \frac{\mu_0}{4\pi} \right) \left( \frac{M}{\left( \frac{d}{2} \right)^3} \right) \times qv$... 1 Edit Delete
20459 $\text{A magnetic needle of magnetic moment } 6.7 \times 10^{-2} \text{ A m}^2 \text{ and moment of inertia } 7.5 \times 10^{-6} \text{ kg m}^2 \text{ is performing simple harmonic oscillation in a magnetic field of } 0.01 \text{ T. Time taken for 10 complete oscillations is:}$ $1.\ 6.65\ \text{s}$ $2.\ 8.89\ \text{s}$ $3.\ 6.98\ \text{s}$ $4.\ 8.76\ \text{s}$ 1 120 JEE MCQ NEW $6.65\ \text{s}$, $8.89\ \text{s}$... 1 Edit Delete
20458 $\text{A rectangular loop with sides } 10 \text{ cm, carrying a current } I = 12 \text{ A, is placed in various orientations as shown in the figures. The loop is subjected to a uniform magnetic field of } 0.3 \text{ T in the positive } z\text{-direction.}$ $\text{In which orientations is the loop in (i) stable equilibrium and (ii) unstable equilibrium?}$ 1 120 JEE MCQ NEW $(a) \text{ and } (b), \text{ respectively}$, $(a) \text{ and } (c), \text{ respectively}$... 3 Edit Delete
20457 $\text{A proton and a deuteron } (q = +e, \ m = 2.0u) \text{ having same kinetic energies enter a region of uniform magnetic field } \vec{B}. \text{ The ratio of the radius } r_d \text{ of deuteron path to the radius of } r_p \text{ of the proton path is:}$ 1 119 JEE MCQ NEW $1:2$, $\frac{\sqrt{2}}{1}$... 2 Edit Delete
20456 $\text{A galvanometer has a coil of resistance } 200\,\Omega \text{ with a full scale deflection at } 20\,\mu\text{A. The value of resistance to be added to use it as an ammeter of range } (0-20)\,\text{mA is:}$ 1 119 JEE MCQ NEW $0.50\,\Omega$, $0.40\,\Omega$... 3 Edit Delete
20455 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{When currents vary with time, Newton's third law is valid only if momentum carried by the electromagnetic field is taken into account.}$ $\text{Statement II:}$ \text{Ampere's circuital law does not depend on Biot-Savart's law.}$ $\text{In the light of the above statements, choose the correct answer from the options given below:}$ 1 119 JEE MCQ NEW $\text{Both Statement I and Statement II are false}$, $\text{Statement I is false, but Statement II is true.}$... 4 Edit Delete
20454 $\text{An element } \Delta l = \Delta x \ \hat{i} \text{ is placed at the origin and carries a large current } I = 10 \ \text{A. The magnetic field on the y-axis at a distance of } 0.5 \ \text{m from the elements } \Delta x \text{ of } 1 \ \text{cm length is:}$ 1 119 JEE MCQ NEW $8 \times 10^{-8} \ \text{T}$, $10 \times 10^{-8} \ \text{T}$... 3 Edit Delete
20453 $\text{A long wire carrying current } \sqrt{2} \text{ A is placed in uniform magnetic field of } 3 \times 10^{-5} \text{ T. If the magnetic field is perpendicular to the wire, then the magnetic force is on the unit length of the wire is:}$ 1 119 JEE MCQ NEW $3 \times 10^{-4} \text{ N}$, $3\sqrt{2} \times 10^{-5} \text{ N}$... 2 Edit Delete
20452 $\text{Two charged particles } A \text{ and } B \text{ have charge } q \text{ each while masses are } m_1 \text{ and } m_2. \text{ Both have the same velocity } v \text{ and enter into a transverse magnetic field } B \text{ such that their radii are } r_1 \text{ and } r_2. \text{ Then the ratio of their masses } m_1 : m_2 \text{ is:}$ 1 119 JEE MCQ NEW $\frac{r_2}{r_1}$, $\left( \frac{r_1}{r_2} \right)^2$... 3 Edit Delete
20451 $\text{Consider the circuit shown. The galvanometer resistance is } 10 \, \Omega \text{ and current through the galvanometer is } 3 \, \text{mA.}$ $\text{Then the resistance of the shunt is:}$ 1 119 JEE MCQ NEW $10^{-3} \, \Omega$, $7.5 \times 10^{-3} \, \Omega$... 4 Edit Delete
20450 $\text{If the current } 200 \, \mu\text{A deflects the coil of the moving coil galvanometer through } 60^\circ, \text{ then the current required to cause deflection through } \frac{\pi}{10} \text{ radians is:}$ 1 119 JEE MCQ NEW $60 \, \mu\text{A}$, $50 \, \mu\text{A}$... 1 Edit Delete
20449 $\text{A proton having velocity } \vec{v}_0 \text{ passes through a region having an electric field } E \text{ and a magnetic field } B. \text{ If the velocity of a proton does not change, then which of the following may be true?}$ $\text{a. } E = 0, B = 0$ $\text{b. } E = 0, B \neq 0$ $\text{c. } E \neq 0, B = 0$ $\text{d. } E \neq 0, B \neq 0$ 1 119 JEE MCQ NEW $(\text{a}), (\text{b}), (\text{c}), (\text{d})$, $(\text{a})$... 3 Edit Delete
20448 $\text{Two infinite current-carrying wires having current } I \text{ in opposite directions are shown below.}$ $\text{Find the magnetic field (in S.I. units) at point } P.$ 1 119 JEE MCQ NEW $\frac{7\mu_0 I}{\pi}$, $\frac{10\mu_0 I}{\pi}$... 2 Edit Delete
20447 $\text{A material is placed in a toroid. If the susceptibility of material is } x = 2 \times 10^{-2}. \text{ Then percentage change in the magnetic field of toroid is:}$ $1. \ 3\%$ $2. \ 1\%$ $3. \ 4\%$ $4. \ 2\%$ 1 119 JEE MCQ NEW $3\%$, $1\%$... 4 Edit Delete
20446 $\text{The characteristics of two coils are given below:}$ $\begin{array}{|c|c|c|} \hline & \text{Coil-A} & \text{Coil-B} \\ \hline \text{Radius} & r_A = 10 \text{ cm} & r_A = 20 \text{ cm} \\ \text{Number of turns} & N_A & N_B \\ \text{Current} & I_A \text{ ampere} & I_B \text{ ampere} \\ \hline \end{array}$ $\text{If the magnetic moments of both Coil-A and Coil-B are equal, choose the correct relation:}$ 1 119 JEE MCQ NEW $2N_AI_A = N_BI_B$, $N_AI_A = N_BI_B$... 3 Edit Delete
20445 $\text{An infinity-long conductor has a current } 14\, \text{A flowing as shown:}$ $\text{Find magnetic field at centre } C \text{ is:}$ 1 119 JEE MCQ NEW $88\, \mu T$, $44\, \mu T$... 2 Edit Delete
20444 $\text{A conducting rod of length } 1 \text{ m is moved across a magnetic field of } 0.15 \text{ T, with constant speed of } 4 \text{ m/s. Find force (in N) on rod.}$ 1 119 JEE MCQ NEW $2 \text{ N}$, $3 \text{ N}$... 3 Edit Delete
20443 $\text{A solenoid having 60 turns and length 15 cm produces magnetic field of } 2.4 \times 10^{-3} \text{ T, Find the current in the solenoid.}$ 1 119 JEE MCQ NEW $\frac{90}{2\pi} \text{ A}$, $\frac{30}{2\pi} \text{ A}$... 2 Edit Delete
20442 $\text{If velocity of charged particle has the component both in and perpendicular to the direction of magnetic field then the path traced by the charged particle will be:}$ $1. \text{ Circular}$ $2. \text{ Straight line}$ $3. \text{ Cycloid}$ $4. \text{ Helical}$ 1 119 JEE MCQ NEW $\text{Circular}$, $\text{Straight line}$... 4 Edit Delete
20441 $\text{A charged particle with charge } 2 \times 10^{-6} \text{ C, at rest, is first accelerated through a potential difference of } 100 \text{ V and then it is subjected to a transverse magnetic field of } 4 \text{ mT. In the region of the magnetic field, it undergoes a circular path of radius } 3 \text{ cm. The mass of the particle is equal to:}$ 1 119 JEE MCQ NEW $1.44 \times 10^{-16} \text{ kg}$, $7.2 \times 10^{-16} \text{ kg}$... 1 Edit Delete
20440 $\text{In a moving coil galvanometer, the number of turns in the coil are increased to increase the current sensitivity by } 50\%. \text{ The percentage change in voltage sensitivity is:}$ 1 119 JEE MCQ NEW $-50\%$, $50\%$... 3 Edit Delete
20439 $\text{Coil A of radius 10 cm has } N_A \text{ number of turns and } I_A \text{ current is flowing through it. Coil B of radius 20 cm has } N_B \text{ number of turns and } I_B \text{ current is flowing through it. If the magnetic dipole moment of both the coils is the same then:}$ 1 119 JEE MCQ NEW $I_A N_A = 4 I_B N_B$, $4 I_A N_A = I_B N_B$... 1 Edit Delete
20438 $\text{A solenoid of length } 2 \text{ m, has } 1200 \text{ turns. The magnetic field inside the solenoid, when } 2 \text{ A current is passed through it is:}$ $\text{(Diameter of the solenoid is } 0.5 \text{ m)}$ 1 119 JEE MCQ NEW $48\pi \times 10^{-5} \text{ T}$, $48\pi \times 10^{-3} \text{ T}$... 1 Edit Delete
20437 $\text{A wire } X \text{ of length } 50 \text{ cm carrying a current } 2 \text{ A is placed parallel to a long wire } Y \text{ of length } 5 \text{ m.}$ $\text{The wire } Y \text{ carries a current } 3 \text{ A.}$ $\text{The distance between the two wires is } 5 \text{ cm and currents flow in the same direction.}$ $\text{The force acting on the wire } Y \text{ is:}$ 1 119 JEE MCQ NEW $1.2 \times 10^{-5} \text{ N directed towards wire } X.$, $1.2 \times 10^{-4} \text{ N directed away from wire } X.$... 1 Edit Delete
20436 $\text{As shown in the figure, a metallic rod of linear density } 0.45 \text{ kg m}^{-1} \text{ is lying horizontally on a smooth incline plane which makes an angle of } 45^\circ \text{ with the horizontal.}$ $\text{The minimum current flowing in the rod required to keep it stationary, when } 0.15 \text{ T magnetic field is acting on it in the vertically upward direction, will be:}$ $\{\text{Use } g = 10 \text{ m/s}^2 \}$ 1 119 JEE MCQ NEW $30 \text{ A}$, $15 \text{ A}$... 1 Edit Delete
20435 $\text{The current sensitivity of a galvanometer can be increased by:}$ $\text{A. decreasing the number of turns.}$ $\text{B. increasing the magnetic field.}$ $\text{C. decreasing the area of the coil.}$ $\text{D. decreasing the torsional constant of the spring.}$ $\text{Choose the most appropriate answer from the options given below:}$ 1 119 JEE MCQ NEW $(\text{B}) \text{ and } (\text{C}) \text{ only}$, $(\text{C}) \text{ and } (\text{D}) \text{ only}$... 4 Edit Delete
20434 $\text{A cyclotron is used to accelerate protons. If the operating magnetic field is } 1.0 \text{ T and the radius of the cyclotron 'dees' is } 60 \text{ cm, the kinetic energy of the accelerated protons in MeV will be:}$ $\text{[use } m_p = 1.6 \times 10^{-27} \text{ kg, } e = 1.6 \times 10^{-19} \text{ C]}$ 1 119 JEE MCQ NEW $12$, $18$... 2 Edit Delete
20433 $\text{A velocity selector consists of electric field } \vec{E} = E\hat{k} \text{ and magnetic field } \vec{B} = B\hat{j} \text{ with } B = 12 \text{ mT. The value } E \text{ required for an electron of energy } 728 \text{ eV moving along the positive x-axis to pass undeflected is:}$ $\text{(Given, mass of electron } = 9.1 \times 10^{-31} \text{ kg)}$ 1 119 JEE MCQ NEW $192 \text{ k Vm}^{-1}$, $192 \text{ m Vm}^{-1}$... 1 Edit Delete
20432 $\text{Two concentric circular loops of radii } r_1 = 30 \text{ cm and } r_2 = 50 \text{ cm}$ $\text{are placed in } X-Y \text{ plane as shown in the figure. A current } I = 7 \text{ A is}$ $\text{flowing through them in the direction as shown in figure. The net}$ $\text{magnetic moment of this system of two circular loops is approximately:}$ 1 119 JEE MCQ NEW $\frac{7}{2} \hat{k} \text{ Am}^2$, $-\frac{7}{2} \hat{k} \text{ Am}^2$... 2 Edit Delete
20431 $B_X$ and $B_Y$ are the magnetic field at the centre of two coils of two coils $X$ and $Y$ respectively, each carrying equal current. If coil $X$ has 200 turns and 20 \text{ cm} radius and coil $Y$ has 400 turns and 20 \text{ cm} radius, the ratio of $B_X$ and $B_Y$ is: 1 119 JEE MCQ NEW 1: 1, 1: 2... 2 Edit Delete
20430 $\text{A charged particle is moving in a uniform magnetic field } (2\hat{i} + 3\hat{j}) \text{ T. If it has an acceleration of } (\alpha \hat{i} - 4\hat{j}) \text{ m/s}^2, \text{ then the value of } \alpha \text{ will be:}$ $1.\ 3$ $2.\ 6$ $3.\ 12$ $4.\ 2$ 1 119 JEE MCQ NEW $3$, $6$... 2 Edit Delete
20429 $\text{An electron with energy } 0.1 \text{ keV moves at right angle to the earth's magnetic field of } 1 \times 10^{-4} \text{ Wbm}^{-2}. \text{ The frequency of revolution of the electron will be}$ $\text{(Take mass of electron } = 9.0 \times 10^{-31} \text{ kg)}$ 1 119 JEE MCQ NEW $1.6 \times 10^5 \text{ Hz}$, $5.6 \times 10^5 \text{ Hz}$... 3 Edit Delete
20428 $\text{The electric current in a circular coil of 2 turns produces a magnetic induction } B_1 \text{ at its centre.}$ $\text{The coil is unwound and is rewound into a circular coil of 5 turns and the same current produces a magnetic induction } B_2 \text{ at its centre.}$ $\text{The ratio of } \frac{B_2}{B_1} \text{ is:}$ 1 119 JEE MCQ NEW $\frac{5}{25}$, $\frac{5}{2}$... 2 Edit Delete
20427 $\text{Two charged particles, having same kinetic energy, are allowed to pass through a uniform magnetic field perpendicular to the direction of motion.}$ $\text{If the ratio of radii of their circular paths is } 6:5 \text{ and their respective masses ratio is } 9:4. \text{ Then, the ratio of their charges will be:}$ 1 119 JEE MCQ NEW $8:5$, $5:4$... 2 Edit Delete
20426 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{The electric force changes the speed of the charged particle and hence changes its kinetic energy; whereas the magnetic force does not change the kinetic energy of the charged particle.}$ $\text{Statement II:}$ \text{The electric force accelerates the positively charged particle perpendicular to the direction of the electric field. The magnetic force accelerates the moving charged particle along the direction of the magnetic field.}$ 1 119 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 3 Edit Delete
20425 $\text{Two long current-carrying conductors are placed parallel to each other at a distance of } 8 \text{ cm between them.}$ $\text{The magnitude of the magnetic field produced at the mid-point between the two conductors due to the current flowing in them is } 300 \, \mu\text{T.}$ $\text{The equal current flowing in the two conductors is:}$ 1 119 JEE MCQ NEW $30 \, \text{A in the same direction}$, $30 \, \text{A in the opposite direction}$... 2 Edit Delete
20424 $\text{A charged particle moves along a circular path in a uniform magnetic field in a cyclotron. The kinetic energy of the charged particle increases to 4 times its initial value. What will be the ratio of the new radius to the original radius of the circular path of the charged particle?}$ 1 119 JEE MCQ NEW $1 : 1$, $1 : 2$... 3 Edit Delete
20423 $\text{Two parallel, long wires are kept } 0.20 \text{ m apart in a vacuum, each carrying current of } x \text{ A in the same direction.}$ $\text{If the force of attraction per meter of each wire is } 2 \times 10^{-6} \text{ N, then the value of } x \text{ is approximately:}$ $1. \ 1$ $2. \ 2.4$ $3. \ 1.4$ $4. \ 2$ 1 119 JEE MCQ NEW $1$, $2.4$... 3 Edit Delete
20422 $\text{The space inside a straight current-carrying solenoid is filled with a magnetic material having magnetic susceptibility equal to } 1.2 \times 10^{-5}. \text{ What is fractional increase in the magnetic field inside solenoid with respect to air as medium inside the solenoid?}$ 1 119 JEE MCQ NEW $1.2 \times 10^{-5}$, $1.2 \times 10^{-3}$... 1 Edit Delete
20421 $\text{Two long parallel conductors } S_1 \text{ and } S_2 \text{ are separated by a distance of } 10 \text{ cm and carrying currents of } 4 \text{ A and } 2 \text{ A respectively.}$ $\text{The conductors are placed along the x-axis in the X-Y plane.}$ $\text{There is a point P located between the conductors (as shown in the figure).}$ $\text{A charged particle of } 3\pi \text{ coulomb is passing through the point P with velocity}$ $\vec{v} = (2\hat{i} + 3\hat{j}) \text{ m/s; where } \hat{i} \& \hat{j} \text{ represents unit vectors along the x \& y-axis respectively.}$ $\text{The force acting on the charged particle is } 4\pi \times 10^{-5} (-x\hat{i} + 2\hat{j}) \text{ N.}$ $\text{The value of } x \text{ is:}$ 1 119 JEE MCQ NEW $2$, $1$... 3 Edit Delete
20420 $\text{A } 72 \, \Omega \text{ galvanometer is shunted by a resistance of } 8 \, \Omega. \text{ The percentage of the total current that passes through the galvanometer is:}$ $1. \; 0.1\%$ $2. \; 10\%$ $3. \; 25\%$ $4. \; 0.25\%$ 1 119 JEE MCQ NEW 0.1\%, 10\%... 2 Edit Delete
20419 $\text{A proton and an alpha particle of the same velocity enter a uniform magnetic field which is acting perpendicular to their direction of motion. The ratio of the circular paths described by the alpha particle and proton is:}$ 1 119 JEE MCQ NEW $1:4$, $4:1$... 3 Edit Delete
20418 $\text{A long solenoid carrying a current produces a magnetic field } B \text{ along its axis.}$ $\text{If the current is doubled and the number of turns per cm is halved,}$ $\text{then the new value of the magnetic field will be equal to:}$ 1 119 JEE MCQ NEW $B$, $2B$... 1 Edit Delete
20417 $\text{A teacher in his laboratory allotted an experiment to determine the resistance } (G) \text{ of a galvanometer. Students took the observation for } \frac{1}{3} \text{ deflection in the galvanometer. Which of the below is true for measuring the value of } G?$ 1 119 JEE MCQ NEW $\frac{1}{3} \text{ deflection method cannot be used for determining the resistance of the galvanometer.}$, $\frac{1}{3} \text{ deflection method can be used and in this case, the } G \text{ equals to twice the value of shunt resistance } (S).$... 2 Edit Delete
20416 $\text{A long straight wire with a circular cross-section having radius R is carrying a steady current I.}$ $\text{The current I is uniformly distributed across this cross-section.}$ $\text{Then the variation of the magnetic field due to the current I with distance r (r<R) from its centre will be:}$ 1 119 JEE MCQ NEW $B \propto r^2$, $B \propto r$... 2 Edit Delete
20415 $\text{A proton, a deuteron and an } \alpha\text{-particle with the same kinetic energy enter into a uniform magnetic field.}$ $\text{The ratio of the radii of their respective circular paths is:}$ 1 119 JEE MCQ NEW $1 : \sqrt{2} : \sqrt{2}$, $1 : 1 : \sqrt{2}$... 4 Edit Delete
20414 $\text{The magnetic field at the centre of a circular coil of radius } r, \text{ due to current } I \text{ flowing through it, is } B. \text{ The magnetic field at a point along the axis at a distance } \frac{r}{2} \text{ from the centre is:}$ 1 119 JEE MCQ NEW $\frac{B}{2}$, $2B$... 3 Edit Delete
20413 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{In a uniform magnetic field, speed and energy remain the same for a moving charged particle.}$ $\text{Reason (R):}$ $\text{Moving charged particle experiences a magnetic force perpendicular to its direction of motion.}$ 1 119 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
20412 $\text{In laboratory experiments, a galvanometer is often used to detect the null point. The figure of merit of a galvanometer is a measure of its sensitivity, defined as the current required to produce a unit deflection (usually 1 division on the scale).}$ $\text{If a galvanometer produces a deflection of } 2^\circ, \text{ when a current of } 6 \text{ mA is passed through it, what is its figure of merit?}$ 1 119 JEE MCQ NEW $3 \times 10^{-3} \text{ A/div}$, $333^\circ \text{ A/div}$... 1 Edit Delete
20411 $\text{An iron rod of volume } 10^{-3} \text{ m}^3 \text{ and relative permeability } 1000 \text{ is placed as core in a solenoid with } 10 \text{ turns/cm. If a current of } 0.5 \text{ A is passed through the solenoid, then the magnetic moment of the rod will be:}$ 1 119 JEE MCQ NEW $0.5 \times 10^2 \text{ Am}^2$, $50 \times 10^2 \text{ Am}^2$... 4 Edit Delete
20410 $\text{A galvanometer coil has } 500 \text{ turns and each turn has an average area of } 3 \times 10^{-4} \text{ m}^2. \text{ If a torque of } 1.5 \text{ Nm is required to keep this coil parallel to a magnetic field when a current of } 0.5 \text{ A is flowing through it, the strength of the field (in T) is:}$ $1. \ 10$ $2. \ 40$ $3. \ 20$ $4. \ 30$ 1 119 JEE MCQ NEW $10$, $40$... 3 Edit Delete
20409 $\text{A beam of protons with speed } 4 \times 10^5 \text{ ms}^{-1} \text{ enters a uniform magnetic field of } 0.3 \text{ T at an angle of } 60^\circ \text{ to the magnetic field.}$ $\text{The pitch of the resulting helical path of protons is close to:}$ $\text{(Mass of the proton } = 1.67 \times 10^{-27} \text{ kg, charge of the proton } = 1.69 \times 10^{-19} \text{ C)}$ 1 119 JEE MCQ NEW $12 \text{ cm}$, $4 \text{ cm}$... 2 Edit Delete
20408 $\text{A long, straight wire of radius carries a current distributed uniformly over its cross-section. The ratio of the magnetic fields due to the wire at a distance } \frac{a}{2} \text{ and } 2a, \text{ respectively from the axis of the wire is:}$ 1 119 JEE MCQ NEW $\frac{1}{2}$, $1$... 2 Edit Delete
20407 $\text{A particle having the same charge as of electron moves in a circular path of radius } 0.5 \text{ cm under the influence of a magnetic field of } 0.5 \text{ T.}$ $\text{If an electric field of } 100 \text{ V/m makes it to move in a straight path, then the mass of the particle is:}$ $\text{(given charge of electron } e = 1.6 \times 10^{-19} \text{ C)}$ 1 119 JEE MCQ NEW $9.1 \times 10^{-31} \text{ kg}$, $1.6 \times 10^{-27} \text{ kg}$... 4 Edit Delete
20406 $\text{An infinitely long current-carrying wire and a small current-carrying loop are in the plane of the paper as shown. The radius of the loop is } a \text{ and the distance of its centre from the wire is } d (d \gg a). \text{ If the loop applies a force } F \text{ on the wire then:}$ 1 119 JEE MCQ NEW $F = 0$, $F \propto \left( \frac{a}{d} \right)$... 4 Edit Delete
20405 $\text{A current loop, having two circular arcs joined by two radial lines is shown in the figure. It carries a current of } 10 \text{ A. The magnetic field at a point } O \text{ will be close to:}$ 1 119 JEE MCQ NEW $1.0 \times 10^{-7} \text{ T}$, $1.5 \times 10^{-7} \text{ T}$... 4 Edit Delete
20404 $\text{A square loop is carrying a steady current } I \text{ and the magnitude of its magnetic dipole moment is } m. \text{ If this square loop is changed to a circular loop and it carries the same current, the magnitude of the magnetic dipole moment of circular loop will be:}$ 1 119 JEE MCQ NEW $\frac{4m}{\pi}$, $\frac{3m}{\pi}$... 1 Edit Delete
20403 $\text{The magnitude of the magnetic field at the centre of an equilateral}$ $\text{triangular loop of side 1 m which is carrying a current of 10 A is:}$ $\text{[Take } \mu_0 = 4\pi \times 10^{-7} \text{ NA}^{-2}]$ 1 119 JEE MCQ NEW $3 \, \mu\text{T}$, $18 \, \mu\text{T}$... 2 Edit Delete
20402 $\text{The resistance of a galvanometer is } 50 \, \Omega \text{ and the maximum current which can be passed through it is } 0.002 \, \text{A.}$ $\text{What resistance must be connected to it in order to convert it into an ammeter of range } (0-0.5 \, \text{A})?$ 1 119 JEE MCQ NEW 0.2 \, \Omega, 0.002 \, \Omega... 1 Edit Delete
20401 $\text{A moving coil galvanometer has a coil with } 175 \text{ turns and area } 1 \text{ cm}^2 . \text{ It uses a torsion band of torsion constant } 10^{-6} \text{ N-m/rad. The coil is placed in a magnetic field } B \text{ parallel to its plane. The coil deflects by } 1^\circ \text{ for a current of } 1 \text{ mA. The value of } B \text{ (in Tesla) is approximately:}$ 1 119 JEE MCQ NEW $10^{-3}$, $10^{-1}$... 3 Edit Delete
20400 $\text{A moving coil galvanometer with a resistance of } 50 \, \Omega \text{ shows full deflection at a current of } 4 \, \text{mA.}$ $\text{When this galvanometer is used to construct a voltmeter with a series resistance of } 5 \, \text{k}\Omega, \text{ the maximum voltage that can be measured by the voltmeter is close to:}$ 1 119 JEE MCQ NEW $40 \, \text{V}$, $10 \, \text{V}$... 4 Edit Delete
20399 $\text{A rectangular coil (Dimension } 5 \text{ cm} \times 2.5 \text{ cm}) \text{ with } 100 \text{ turns, carrying a current of } 3 \text{ A in the clock-wise direction, is kept centered at the origin and in the } X-Z \text{ plane. A magnetic field of } 1 \text{ T is applied along } X\text{-axis. If the coil is tilted through } 45^\circ \text{ about } Z\text{-axis, then the torque on the coil is:}$ 1 119 JEE MCQ NEW $0.55 \text{ Nm}$, $0.38 \text{ Nm}$... 4 Edit Delete
20398 $\text{A galvanometer with its coil resistance } 25 \, \Omega \text{ requires a current of } 1 \, \text{mA for its full deflection.}$ $\text{In order to construct an ammeter to read up to a current of } 2 \, \text{A, the approximate value of the shunt resistance should be:}$ 1 119 JEE MCQ NEW $1.25 \times 10^{-2} \, \Omega$, $2.5 \times 10^{-3} \, \Omega$... 1 Edit Delete
20397 $\text{A charge } q \text{ is spread uniformly over an insulated loop of radius } r. \text{ If it is rotated with an angular velocity } \omega \text{ with respect to the normal axis then the magnetic moment of the loop is:}$ 1 119 JEE MCQ NEW $\frac{3}{2} q \omega r^2$, $\frac{1}{2} q \omega r^2$... 2 Edit Delete
20396 $\text{A uniform magnetic field } B \text{ of } 0.3 \text{ T is along the positive } z\text{-direction.}$ $\text{A rectangular loop } (abcd) \text{ of sides } 10 \text{ cm } \times 5 \text{ cm carries a current } I$ $\text{of } 12 \text{ A. Out of the following different orientations which one}$ $\text{corresponds to stable equilibrium?}$ 1 119 JEE MCQ NEW $\text{Option 1 diagram}$, $\text{Option 2 diagram}$... 4 Edit Delete
20395 $\text{A negative test charge is moving near a long straight wire carrying a current. The force acting on the test charge is parallel to the direction of the current. The motion of the charge is:}$ 1 119 JEE MCQ NEW $\text{parallel to the wire opposite to the current}$, $\text{parallel to the wire long the current}$... 4 Edit Delete
20394 $\text{A magnetic dipole in a constant magnetic field has:}$ 1 119 JEE MCQ NEW $\text{minimum potential energy when the torque is maximum.}$, $\text{zero potential energy when the torque is minimum.}$... 4 Edit Delete
20393 $\text{In a certain region, static electric and magnetic fields exist. The magnetic field is given by } \vec{B} = B_0 (\hat{i} + 2\hat{j} - 4\hat{k}).$ $\text{If a test charge moving with a velocity } \vec{v} = v_0 (3\hat{i} - \hat{j} + 2\hat{k}) \text{ experiences no force in that region, then the electric field in the region, (in SI units) is:}$ 1 119 JEE MCQ NEW $\vec{E} = -v_0 B_0 (\hat{i} + \hat{j} + 7\hat{k})$, $\vec{E} = v_0 B_0 (14\hat{j} + 7\hat{k})$... 3 Edit Delete
20392 $\text{The AC voltage across a resistance can be measured using a:}$ 1 119 JEE MCQ NEW $\text{hot wire voltmeter}$, $\text{moving coil galvanometer}$... 1 Edit Delete
20391 $\text{A short bar magnet is placed in the magnetic meridian of the earth with the north pole pointing north. Neutral points are found at a distance of } 30 \text{ cm from the magnet on the East-West line, drawn through the middle point of the magnet. The magnetic moment of the magnet in } \text{Am}^2 \text{ is close to:}$ $\left( \text{Given } \frac{\mu_0}{4\pi} = 10^{-7} \text{ in S.I. units and } B_H = \text{Horizontal component of earth's magnetic field } = 3.6 \times 10^{-5} \text{ Tesla} \right)$ 1 119 JEE MCQ NEW $14.6$, $19.4$... 3 Edit Delete
20390 $\text{Two long straight parallel wires, carrying (adjustable) current } I_1 \text{ and } I_2 \text{ are kept at a distance } d \text{ apart.}$ $\text{If the force } F \text{ between the two wires is taken as positive when the wires repel each other and negative when the wires attract each other, the graph showing the dependence of } F, \text{ on the product } I_1I_2 \text{ would be:}$ 1 119 JEE MCQ NEW $\text{Graph with } F \text{ on the y-axis and } I_1I_2 \text{ on the x-axis, passing through the origin with positive slope}$, $\text{Graph with } F \text{ on the y-axis and } I_1I_2 \text{ on the x-axis, passing through the origin with negative slope}$... 1 Edit Delete
20389 $\text{A wire carrying current } I \text{ is tied between points } P \text{ and } Q \text{ and is in the shape of a circular arch of radius } R \text{ due to a uniform magnetic field } B \text{ (perpendicular to the plane of the paper, shown by cross marked) in the vicinity of the wire. If the wire subtends an angle } 2\theta_0 \text{ at the centre of the circle (of which it forms an arch) then the tension in the wire is:}$ 1 119 JEE MCQ NEW $\frac{IBR}{2 \sin \theta_0}$, $IBR \theta_0$... 3 Edit Delete
20388 $\text{A proton (mass } m) \text{ accelerated by a potential difference } V \text{ flies through a uniform transverse magnetic field } B. \text{ The field occupies a region of space by width } 'd'. \text{ If } '\alpha' \text{ be the angle of deviation of the proton from the initial direction of motion (see figure), the value of } \sin \alpha \text{ will be:}$ 1 119 JEE MCQ NEW $\frac{B}{d} \sqrt{\frac{q}{2mV}}$, $Bd \sqrt{\frac{q}{2mV}}$... 2 Edit Delete
20387 $\text{Two rings of equal radius } R \text{ arranged perpendicular to each other with a common centre at } C, \text{ carrying equal current } I. \text{ Then the magnetic field at the common centre } C \text{ is:}$ 1 119 JEE MCQ NEW $\frac{\mu_0 I}{2R}$, $\frac{\mu_0 I}{R}$... 4 Edit Delete
20386 $\text{Consider the following current carrying structure. Then the magnetic field at the centre is:}$ $\text{Given that } (r_1 = 2\pi \text{ units and } r_2 = 4\pi \text{ units.})$ 1 119 JEE MCQ NEW $1 \times 10^{-8} \text{ T}$, $5 \times 10^{-8} \text{ T}$... 2 Edit Delete
20385 $\text{A conducting rod, suspended freely in a gravitational field, carries a current } I \text{ as shown in the figure. If the length of the rod, current in the rod, and magnetic field strength are } 0.5 \text{ m, } 2 \text{ A, and } 0.4 \text{ T respectively, the mass of the rod is: (take } g = 10 \text{ m/s}^2)$ 1 119 JEE MCQ NEW $20 \text{ grams}$, $40 \text{ grams}$... 2 Edit Delete
20384 $\text{An electron is moving along positive } x \text{ direction in } x-y \text{ plane.}$ $\text{Magnetic field points in negative } z \text{ direction, then the force due to magnetic field on electron points in the direction is:}$ 1 119 JEE MCQ NEW $\hat{j}$, $-\hat{j}$... 2 Edit Delete
20383 $\text{A charged particle is projected inside along the axis of a long solenoid, then:}$ $\text{a. the path will be a straight line}$ $\text{b. there will be no effect of the magnetic field on the charge}$ $\text{c. the path will be parabolic}$ $\text{d. the path will be circular}$ $\text{Choose the correct statements from the ones given above:}$ 1 119 JEE MCQ NEW $\text{(a), (d)}$, $\text{(a), (b)}$... 2 Edit Delete
20382 $\text{In a moving coil galvanometer, if the number of turns in the coil increase by } 25\%, \text{ the change in voltage sensitivity is:}$ 1 119 JEE MCQ NEW $\text{zero}$, $1\%$... 1 Edit Delete
20381 $\text{The ratio of magnetic field due to coil at centre and at a distance of } R \text{ from the centre on the axis passing through the centre and perpendicular to the plane of ring is } \sqrt{x} : 1 \text{ (R is the radius of coil), find the value of } x.$ 1 119 JEE MCQ NEW $1$, $8$... 3 Edit Delete
20380 $\text{In a long solenoid the magnetic field intensity inside the solenoid is equal to } 1.6 \times 10^{-3} \text{ T.}$ $\text{If number of turns per unit length on the solenoid is equal to } \frac{8}{\pi} \text{ per cm then current flowing in the solenoid is equal to:}$ 1 119 JEE MCQ NEW $5 \text{ A}$, $2.5 \text{ A}$... 1 Edit Delete
20379 $\text{A proton is projected with a speed } v \text{ into a magnetic field } B \text{ of magnitude } 1 \text{ T with the angle between the proton's velocity and the magnetic field being } 60^\circ, \text{ as shown. The kinetic energy of the proton is } 2 \text{ eV (with the proton's mass } = 1.67 \times 10^{-27} \text{ kg, and charge } e = 1.6 \times 10^{-19} \text{ C). The pitch of the path of the proton is:}$ 1 119 JEE MCQ NEW $6.28 \times 10^{-2} \text{ m}$, $6.42 \times 10^{-4} \text{ m}$... 2 Edit Delete
20378 $\text{The given figure shows a long cylindrical shell having current } I \text{ flowing uniformly along the wall.}$ $\text{The graph showing the variation of magnetic field } (B) \text{ with the perpendicular distance } (r) \text{ from the axis of the shell is}$ 1 119 JEE MCQ NEW $B \uparrow \text{ vs } r \text{ with a peak at } r = R$, $B \uparrow \text{ vs } r \text{ decreasing after } r = R$... 2 Edit Delete
20377 $\text{Two identical current carrying coils with same centre are placed with their planes perpendicular to each other as shown.}$ $\text{If } i = \sqrt{2} A \text{ and radius of coils is } R = 1 \text{ m then magnetic field at centre C is equal to:}$ 1 119 JEE MCQ NEW $\mu_0$, $\frac{\mu_0}{2}$... 1 Edit Delete
20376 $\text{The magnetic field induced at point } P \text{ on axis as shown in figure is } \frac{\mu_0 I}{x \sqrt{5R}}. \text{ Then } x =$ 1 119 JEE MCQ NEW 10, 5... 1 Edit Delete
20375 $\text{An infinite wire is bent in the shape as shown in the figure with portion } AOB \text{ being semi-circular of radius } R. \text{ If current } i \text{ flows through the wire, then the magnetic field at the centre } O \text{ is equal to:}$ 1 119 JEE MCQ NEW $\frac{\mu_0 i}{\pi R}$, $\frac{\mu_0 i}{2R}$... 4 Edit Delete
20374 $\text{An infinite wire is bent in the shape as shown in the figure. The magnetic field at point } C \text{ is:}$ 1 119 JEE MCQ NEW $\frac{\mu_0 i}{4 \pi r} (1 + \pi)$, $\frac{\mu_0 i}{4 \pi r} (2 + \pi)$... 1 Edit Delete
20373 $\text{A wire is first coiled in } n \text{ circular turns and current } I \text{ is run through it.}$ $\text{Now the same wire is coiled in } N \text{ circular turns and the same current } I \text{ is run through it.}$ $\text{If } B_1 \text{ and } B_2 \text{ are the magnetic field at centre of two coils respectively then } \frac{B_1}{B_2} \text{ is equal to:}$ 1 119 JEE MCQ NEW $\sqrt{\frac{n}{N}}$, $\left(\frac{n}{N}\right)^2$... 2 Edit Delete
20372 $\text{A current } 2 \text{ A is flowing through the sides of an equilateral triangular loop of side } 4\sqrt{3} \text{ m as shown. The magnetic field induction at the centroid of the triangle is:}$ 1 119 JEE MCQ NEW $3\sqrt{3} \times 10^{-7} \text{ T}$, $\sqrt{3} \times 10^{-7} \text{ T}$... 1 Edit Delete
20371 $\text{A current-carrying loop of radius } a \text{ is placed in the X-Y plane with its center at the origin. The magnetic field on the point } (0, 0, a) \text{ is:}$ 1 119 JEE MCQ NEW $\frac{\mu_0 i}{2 \sqrt{2} a}$, $\frac{\mu_0 i}{4 \sqrt{2} a}$... 2 Edit Delete
20370 $\text{Point } O \text{ and two long wires are kept in the same plane such that point } O \text{ lies in the middle of the line. The magnetic field at point } O \text{ due to the current } i \text{ flowing in both the wires is equal to:}$ 1 119 JEE MCQ NEW $\frac{\mu_0 i}{2 \pi l}$, $\frac{\mu_0 i}{\pi l}$... 2 Edit Delete
20369 $\text{Two straight wires placed parallel to each other are carrying currents as shown.}$ $\text{P is equidistant from the wires.}$ $\text{The magnetic field at point P is:}$ 1 119 JEE MCQ NEW $8 \times 10^{-5} \text{ T}$, $8 \times 10^{-7} \text{ T}$... 1 Edit Delete
20368 $\text{Electric field is applied along } +\hat{y} \text{ direction. A charged particle is travelling along } -\hat{k}, \text{ undeflected. Then magnetic field in the region will be along?}$ 1 119 JEE MCQ NEW $\hat{i}$, $-\hat{i}$... 1 Edit Delete
20367 $\text{A coil of radius } R \text{ centred at } O \text{ carries a current } i. \text{ Point } P \text{ is on the axis of coil at a distance } R \text{ from the centre } O \text{ as shown in the figure.}$ $\text{The ratio of the magnetic field at point } O \text{ to the magnetic field at point } P \text{ is equal to:}$ 1 119 JEE MCQ NEW $2$, $2\sqrt{2}$... 2 Edit Delete
20366 $\text{Two parallel infinite wires carry equal currents as shown. If both the currents are doubled and separation is halved, the force on a 10 cm section of one of the wires becomes:}$ 1 119 JEE MCQ NEW $4 \text{ times}$, $\frac{1}{4} \text{ times}$... 3 Edit Delete
20365 $\text{An infinitely long hollow conducting cylinder with radius } R \text{ carries a uniform current along its surface. The correct representation of magnetic field } (B) \text{ as a function of radial distance } (r) \text{ from the axis of the cylinder is:}$ 1 119 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 4 Edit Delete
20364 $\text{Magnetic fields at two points on the axis of a circular coil at a distance of } 0.05 \text{ m and } 0.2 \text{ m from the centre are in the ratio } 8 : 1. \text{ The radius of the coil is:}$ 1 119 JEE MCQ NEW $0.2 \text{ m}$, $0.1 \text{ m}$... 2 Edit Delete
20363 $\text{A proton, a deuteron and an } \alpha\text{- particle are moving with same momentum in a uniform magnetic field. The ratio of magnetic forces acting on them is } \_\_\_ \text{ and their speeds are in the ratio } \_\_\_.$ 1 119 JEE MCQ NEW $1 : 2 : 4 \text{ and } 2 : 1 : 1$, $2 : 1 : 1 \text{ and } 4 : 2 : 1$... 2 Edit Delete
20362 $\text{A square loop of side } 2a \text{ and carrying current } I \text{ is kept in xz plane}$ $\text{with its centre at origin. A long wire carrying the same current } I \text{ is}$ $\text{placed parallel to z-axis and passing through point } (0, b, 0), (b \gg a).$ $\text{The magnitude of torque on the loop about z-axis will be:}$ 1 119 JEE MCQ NEW $\frac{2\mu_0 I^2 a^2 b}{\pi (a^2 - b^2)}$, $\frac{\mu_0 I^2 a^2 b}{\pi (a^2 - b^2)}$... 4 Edit Delete
20361 $\text{A charged particle going around in a circle can be considered to be a current loop. A particle of mass } m \text{ carrying charge } q \text{ is moving in a plane with speed } v \text{ under the influence of a magnetic field } \vec{B}. \text{ The magnetic moment of this moving particle:}$ 1 119 JEE MCQ NEW $\frac{mv^2 \vec{B}}{B^2}$, $\frac{mv^2 \vec{B}}{2\pi B^2}$... 4 Edit Delete
20360 $\text{A particle of charge } q \text{ and mass } m \text{ is moving with a velocity } -v\hat{i} (v \neq 0) \text{ towards a large screen placed in the } Y-Z \text{ plane at a distance } d. \text{ If there is a magnetic field } \mathbf{B} = B_0 \hat{k}, \text{ the minimum value of } v \text{ for which the particle will not hit the screen is:}$ 1 119 JEE MCQ NEW $\frac{qdB_0}{m}$, $\frac{2m}{2qdB_0}$... 4 Edit Delete
20359 $\text{A galvanometer of resistance } G \text{ is converted into a voltmeter of range } 0-1 \text{ V by connecting a resistance } R_1 \text{ in series with it. The additional resistance that should be connected in series with } R_1 \text{ to increase the range of the voltmeter to } 0-2 \text{ V will be:}$ $1. \ R_1$ $2. \ R_1 + G$ $3. \ R_1 - G$ $4. \ G$ 1 119 JEE MCQ NEW $R_1$, $R_1 + G$... 2 Edit Delete
20358 $\text{A square loop of side } 2a, \text{ and carrying current } I, \text{ is kept in } XZ \text{ plane}$ $\text{with its centre at origin. A long wire carrying the same current } I \text{ is}$ $\text{placed parallel to the } z\text{-axis and passing through the point } (0, b, 0), (b \gg a).$ $\text{The magnitude of the torque on the loop about } z\text{-axis is given by:}$ 1 119 JEE MCQ NEW $\frac{2\mu_0 I^2 a^2}{\pi b}$, $\frac{\pi b}{\mu_0 I^2 a^3}$... 1 Edit Delete
20357 $\text{A circular coil has moment of inertia } 0.8 \text{ kgm}^2 \text{ around any diameter}$ $\text{and is carrying current to produce a magnetic moment of } 20 \text{ Am}^2.$ $\text{The coil is kept initially in a vertical position and it can rotate freely}$ $\text{around a horizontal diameter. When a uniform magnetic field of } 4 \text{ T}$ $\text{is applied along the vertical, it starts rotating around its horizontal}$ $\text{diameter. The angular speed the coil acquires after rotating by } 60^\circ$ $\text{will be:}$ 1 119 JEE MCQ NEW $20 \text{ rads}^{-1}$, $20\pi \text{ rads}^{-1}$... 4 Edit Delete
20356 $\text{A wire } A, \text{ bent in the shape of an arc of a circle, carrying a current of } 2 \text{ A and having radius } 2 \text{ cm and another wire } B, \text{ also bent in the shape of arc of a circle, carrying a current of } 3 \text{ A and having radius of } 4 \text{ cm, are placed as shown in the figure. The ratio of the magnetic fields due to the wires } A \text{ and } B \text{ at the common centre } O \text{ is:}$ 1 119 JEE MCQ NEW $6 : 5$, $6 : 4$... 1 Edit Delete
20355 $\text{Which of the following will NOT be observed when a multimeter (operating in resistance measuring mode) probes connected across a component, are just reversed?}$ 1 119 JEE MCQ NEW $\text{Multimeter shows an equal deflection in both cases i.e. before and after reversing the probes if the chosen component is resistor.}$, $\text{Multimeter shows NO deflection in both cases i.e. before and after reversing the probes if the chosen component is metal wire.}$... 4 Edit Delete
20354 $\text{A charged particle carrying charge } 1 \, \mu \text{C is moving with velocity } (2\hat{i} + 3\hat{j} + 4\hat{k}) \, \text{m/s. If an external magnetic field of } (5\hat{i} + 3\hat{j} - 6\hat{k}) \times 10^{-3} \, \text{T, exists in the region where the particle is moving then the force on the particle is } \vec{F} \times 10^{-9} \, \text{N. The vector } \vec{F} \text{ is:}$ 1 119 JEE MCQ NEW $-3.0\hat{i} + 3.2\hat{j} - 0.9\hat{k}$, $-300\hat{i} + 320\hat{j} - 90\hat{k}$... 3 Edit Delete
20353 $\text{Magnitude of magnetic field (in SI units) at the centre of a hexagonal}$ $\text{shape coil of side 10 cm, 50 turns and carrying current } I \text{ (Ampere) in}$ $\text{units of } \frac{\mu_0 I}{\pi} \text{ is:}$ 1 119 JEE MCQ NEW $5\sqrt{3}$, $250\sqrt{3}$... 4 Edit Delete
20352 $\text{A wire carrying current } I \text{ is bent in the shape } ABCDEFA \text{ as shown, where rectangle } ABCDA \text{ and } ADEF \text{A are perpendicular to each other. If the sides of the rectangles are of lengths } a \text{ and } b, \text{ then the magnitude and direction of magnetic moment of the loop } ABCDEFA \text{ is:}$ 1 119 JEE MCQ NEW $\sqrt{2} abI \text{ along } \left[ \frac{\hat{j}}{\sqrt{2}} + \frac{\hat{k}}{\sqrt{2}} \right]$, $\sqrt{2} abI \text{ along } \left[ \frac{\hat{j}}{\sqrt{5}} + \frac{2\hat{k}}{\sqrt{5}} \right]$... 1 Edit Delete
20351 $\text{The figure shows a region of length 'l' with a uniform magnetic field of } 0.3 \text{ T in it and a proton entering the region with velocity } 4 \times 10^5 \text{ ms}^{-1} \text{ making an angle } 60^\circ \text{ with the field.}$ $\text{If the proton completes 10 revolutions by the time it crosses the region shown, 'l' is close to (mass of proton } = 1.67 \times 10^{-27} \text{ kg, charge of the proton } = 1.6 \times 10^{-19} \text{ C)}$ 1 119 JEE MCQ NEW $0.11 \text{ m}$, $0.22 \text{ m}$... 3 Edit Delete
20350 $\text{Find the magnetic field at point } P \text{ due to a straight line segment } AB$ $\text{of length } 6 \text{ cm carrying a current of } 5 \text{ A. (See figure)}$ $\left( \mu_0 = 4\pi \times 10^{-7} \text{ N}\cdot\text{A}^{-2} \right)$ 1 119 JEE MCQ NEW $1.5 \times 10^{-5} \text{ T}$, $3.0 \times 10^{-5} \text{ T}$... 1 Edit Delete
20349 $\text{A moving coil galvanometer, having a resistance } G, \text{ produces full scale deflection when a current } I_g \text{ flows through it.}$ $\text{This galvanometer can be converted into (i) an ammeter of range } 0 \text{ to } I_0 \ (I_0 > I_g) \text{ by connecting a shunt resistance } R_A \text{ to it and (ii) into a voltmeter of range } 0 \text{ to } V \ (V = GI_0) \text{ by connecting a series resistance } R_V \text{ to it. Then,}$ 1 119 JEE MCQ NEW $R_A R_V = G^2 \text{ and } \frac{R_A}{R_V} = \frac{I_g}{I_0 - I_g}$, $R_A R_V = G^2 \left( \frac{I_g}{I_0 - I_g} \right) \text{ and } \frac{R_A}{R_V} = \left( \frac{I_0 - I_g}{I_g} \right)^2$... 4 Edit Delete
20348 $\text{A galvanometer of resistance } 100 \, \Omega \text{ has } 50 \text{ divisions on its scale}$ $\text{and has sensitivity of } 20 \, \mu\text{A/division. It is to be converted to a}$ $\text{voltmeter with three ranges of } 0-2 \, \text{V}, \, 0-10 \, \text{V and } 0-20 \, \text{V. The}$ $\text{appropriate circuit to do so is:}$ 1 119 JEE MCQ NEW $\begin{array}{l} R_1 = 1900 \, \Omega \\ R_2 = 8000 \, \Omega \\ R_3 = 10000 \, \Omega \end{array}$, $\begin{array}{l} R_1 = 19900 \, \Omega \\ R_2 = 9900 \, \Omega \\ R_3 = 1900 \, \Omega \end{array}$... 1 Edit Delete
20347 $\text{A thin ring of } 10 \text{ cm radius carries a uniformly distributed charge.}$ $\text{The ring rotates at a constant angular speed of } 40\pi \text{ rad s}^{-1} \text{ about}$ $\text{its axis, perpendicular to its plane. If the magnetic field at its centre is}$ $3.8 \times 10^{-9} \text{ T, then the charge carried by the ring is close to:}$ $\left( \mu_0 = 4\pi \times 10^{-7} \text{ N/A}^2 \right)$ 1 119 JEE MCQ NEW $7 \times 10^{-6} \text{ C}$, $4 \times 10^{-5} \text{ C}$... 4 Edit Delete
20346 $\text{A proton, an electron, and a helium nucleus have the same energy.}$ $\text{They are in circular orbits in a plane due to a magnetic field}$ $\text{perpendicular to the plane. Let } r_p, r_e \text{ and } r_{\text{He}} \text{ be their respective radii, then:}$ $1.\ r_e < r_p < r_{\text{He}}$ $2.\ r_e > r_p = r_{\text{He}}$ $3.\ r_e < r_p = r_{\text{He}}$ $4.\ r_e > r_p > r_{\text{He}}$ 1 119 JEE MCQ NEW $r_e < r_p < r_{\text{He}}$, $r_e > r_p = r_{\text{He}}$... 3 Edit Delete
20345 $\text{Two wires } A \text{ and } B \text{ are carrying currents } I_1 \text{ and } I_2 \text{ as shown in the figure.}$ $\text{The separation between them is } d. \text{ A third wire } C \text{ carrying a current } I$ $\text{is to be kept parallel to them at a distance } x \text{ from } A \text{ such that the net}$ $\text{force acting on it is zero. The possible values of } x \text{ are:}$ 1 119 JEE MCQ NEW $x = \left( \frac{I_1}{I_1 - I_2} \right) d \text{ and } x = \frac{I_2}{(I_1 - I_2)} d$, $x = \frac{I_1 d}{I_1 - I_2} \text{ and } x = \frac{I_2}{(I_1 - I_2)} d$... 2 Edit Delete
20344 $\text{A rigid square loop of side } a, \text{ carrying a current } I_2, \text{ lies on a horizontal surface near a long, straight wire carrying a current } I_1. \text{ Both the loop and the wire are in the same plane, as shown in the figure. The net force acting on the loop due to the current in the wire is:}$ 1 119 JEE MCQ NEW $\text{zero}$, $\text{repulsive and equal to } \frac{\mu_0 I_1 I_2}{4\pi}$... 2 Edit Delete
20343 $\text{Two very long, straight, and insulated wires are kept at } 90^\circ \text{ angle from each other in } xy\text{-plane as shown in the figure}$ $\text{These wires carry currents of equal magnitude } I, \text{ whose directions are shown in the figure. The net magnetic field at point } P \text{ will be:}$ 1 119 JEE MCQ NEW $\text{zero}$, $-\frac{\mu_0 I}{2 \pi d} (\hat{x} + \hat{y})$... 1 Edit Delete
20342 $\text{A circular coil with } N \text{ turns and radius } r \text{ carries a current } I. \text{ It is held in the } XZ\text{-plane within a magnetic field } \vec{B}. \text{ The torque on the coil due to the magnetic field is:}$ 1 119 JEE MCQ NEW $\frac{B \pi r^2 I}{N}$, $\text{zero}$... 3 Edit Delete
20341 $\text{A helmholtz coil has a pair of loops, each with } N \text{ turns and radius } R. \text{ They are placed coaxially at a distance } R \text{ and the same current } I \text{ flows through the loops in the same direction. The magnitude of the magnetic field at the point } P, \text{ midway between the centres } A \text{ and } C, \text{ is given by:}$ 1 119 JEE MCQ NEW $\frac{8N\mu_0I}{5^{1/2}R}$, $\frac{4N\mu_0I}{5^{3/2}R}$... 4 Edit Delete
20340 $\text{The dipole moment of a circular loop carrying a current } I, \text{ is } m \text{ and the magnetic field at the centre of the loop is } B_1. \text{ When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is } B_2. \text{ The ratio } \frac{B_1}{B_2} \text{ is:}$ 1 119 JEE MCQ NEW $2$, $\sqrt{3}$... 3 Edit Delete
20339 $\text{An electron, a proton and an alpha particle having the same kinetic energy are moving in circular orbits of radii } r_e, r_p, r_\alpha \text{ respectively in a uniform magnetic field } B. \text{ The relation between } r_e, r_p, r_\alpha \text{ is:}$ $1. \ r_e > r_p = r_\alpha$ $2. \ r_e < r_p = r_\alpha$ $3. \ r_e < r_p < r_\alpha$ $4. \ r_e < r_\alpha < r_p$ 1 119 JEE MCQ NEW $r_e > r_p = r_\alpha$, $r_e < r_p = r_\alpha$... 2 Edit Delete
20338 $\text{When a current of } 5 \text{ mA is passed through a galvanometer having a coil of resistance } 15 \, \Omega, \text{ it shows full scale deflection.}$ $\text{The value of the resistance to be put in series with the galvanometer to convert it into a voltmeter of range } 0-10 \, \text{V is:}$ 1 119 JEE MCQ NEW $1.985 \times 10^3 \, \Omega$, $2.045 \times 10^3 \, \Omega$... 1 Edit Delete
20337 $\text{A galvanometer having a coil resistance of } 100 \, \Omega \text{ gives a full-scale deflection when a current of } 1 \, \text{mA} \text{ is passed through it. The value of the resistance which can convert this galvanometer into an ammeter giving a full-scale deflection for a current of } 10 \, \text{A} \text{, is:}$ 1 119 JEE MCQ NEW $0.01 \, \Omega$, $2 \, \Omega$... 1 Edit Delete
20336 $\text{Two identical wires } \text{A} \text{ and } \text{B}, \text{ each of length } 'l', \text{ carry the same current } I. \text{ Wire } \text{A} \text{ is bent into a circle of radius } R \text{ and wire } \text{B} \text{ is bent to form a square of side } 'a'. \text{ If } B_A \text{ and } B_B \text{ are the values of the magnetic field at the centres of the circle and square respectively, then the ratio } \frac{B_A}{B_B} \text{ is?}$ 1 119 JEE MCQ NEW $\frac{\pi^2}{8}$, $\frac{\pi^2}{16\sqrt{2}}$... 4 Edit Delete
20335 $\text{Two long current carrying thin wires, both with current } I, \text{ are held by insulating threads of length } L \text{ and are in equilibrium as shown in the figure, with threads making an angle } \theta \text{ with the vertical. The mass per unit length of wires is } \lambda, \text{ then the value of } I \text{ is:}$ $\left( g = \text{gravitational acceleration} \right)$ 1 119 JEE MCQ NEW $\sin \theta \sqrt{\frac{\pi \lambda g L}{\mu_0 \cos \theta}}$, $2 \sin \theta \sqrt{\frac{\pi \lambda g L}{\mu_0 \cos \theta}}$... 2 Edit Delete
20334 $\text{Two coaxial solenoids of different radii carry current } I \text{ in the same direction. Let } \vec{F}_1 \text{ be the magnetic force on the inner solenoid due to the outer one and } \vec{F}_2 \text{ be the magnetic force on the outer solenoid due to the inner one. Then:}$ 1 119 JEE MCQ NEW $\vec{F}_1 = \vec{F}_2 = 0$, $\vec{F}_1 \text{ is radially inwards and } \vec{F}_2 \text{ is radially outwards}$... 1 Edit Delete
20333 $\text{The effective resistance between A and B, if resistance of each resistor is R, will be:}$ 1 118 JEE MCQ NEW $\frac{2}{3}R$, $\frac{4R}{3}$... 4 Edit Delete
20332 $\text{The equivalent resistance between A and B is:}$ 1 118 JEE MCQ NEW $27\,\Omega$, $19\,\Omega$... 2 Edit Delete
20331 $\text{The number of electrons flowing per second in the filament of a 110 W bulb operating at 220 V is:}$ $\text{(Given } e = 1.6 \times 10^{-19} \text{ C)}$ 1 118 JEE MCQ NEW $1.25 \times 10^{19}$, $6.25 \times 10^{17}$... 4 Edit Delete
20330 $\text{The value of unknown resistance (} x \text{) for which the potential difference between B and D will be zero in the arrangement shown, is:}$ 1 118 JEE MCQ NEW $6\,\Omega$, $9\,\Omega$... 1 Edit Delete
20329 $\text{An electric bulb rated } 50 \text{ W} - 200 \text{ V is connected across a } 100 \text{ V supply. The power dissipation of the bulb is -}$ 1 118 JEE MCQ NEW $12.5 \text{ W}$, $25 \text{ W}$... 1 Edit Delete
20328 $\text{In the given circuit the potential difference across } 700 \, \Omega \text{ resistance is: (i.e., } V_0)$ $\text{1. } 2 \, \text{V}$ $\text{2. } 0.5 \, \text{V}$ $\text{3. } 1.1 \, \text{V}$ $\text{4. zero}$ 1 118 JEE MCQ NEW $2 \, \text{V}$, $0.5 \, \text{V}$... 3 Edit Delete
20327 $\text{If electric current passing through a conductor varies with time as } I = I_0 + \beta t \text{ where } I_0 = 20 \text{ A}, \beta = 3 \text{ A/s}, \text{ then the charge flows through the conductor in the first 10 sec is:}$ 1 118 JEE MCQ NEW $400 \text{ C}$, $500 \text{ C}$... 4 Edit Delete
20326 $\text{In a meter bridge, an unknown resistance } X \text{ has a specific resistance } S_1 = \frac{X \pi R^2}{l}, \text{ where } R \text{ is radius and } l \text{ is length. If the length and radius both are doubled, the new specific resistance is:}$ 1 118 JEE MCQ NEW $S_1$, $2S_1$... 1 Edit Delete
20325 $\text{Three voltmeters are connected in a circuit as shown in the diagram.}$ $\text{Then the correct relation among their readings } (V_1, V_2 \text{ and } V_3) \text{ is:}$ 1 118 JEE MCQ NEW $V_1 > V_2 = V_3$, $V_1 + V_2 = V_3$... 2 Edit Delete
20324 $\text{In the given meter bridge circuit, a null point is found at } 60 \text{ cm from the end } A. \text{ The unknown resistance } S \text{ (in } \Omega \text{) is:}$ 1 118 JEE MCQ NEW $60 \ \Omega$, $80 \ \Omega$... 4 Edit Delete
20323 $\text{The length of a conductor having resistance } 160 \, \Omega, \text{ is compressed to } 25\% \text{ of its initial value. The new resistance will be}$ 1 118 JEE MCQ NEW $10 \, \Omega$, $20 \, \Omega$... 1 Edit Delete
20322 $\text{For the given circuit diagram, find the current } I.$ 1 118 JEE MCQ NEW $\frac{5}{16} \text{ A}$, $\frac{5}{48} \text{ A}$... 3 Edit Delete
20321 $\text{Two identical bulbs are first connected in series then in parallel. Find the ratio of power consumed in two cases:}$ $1.\ 1 : 1$ $2.\ 1 : 4$ $3.\ 4 : 1$ $4.\ 1 : 2$ 1 118 JEE MCQ NEW $1 : 1$, $1 : 4$... 2 Edit Delete
20320 $\text{Find the current flowing in } 3 \, \Omega \text{ resistor in the given circuit}$ 1 118 JEE MCQ NEW $0.4 \, \text{A}$, $0.2 \, \text{A}$... 3 Edit Delete
20319 $\text{When an electric field is applied to the electrons in a conductor, it starts:}$ 1 118 JEE MCQ NEW $\text{moving in a straight line.}$, $\text{drifting from higher potential to lower potential.}$... 3 Edit Delete
20318 $10$ $\text{resistors each of } 10 \, \Omega \text{ resistance when connected together give}$ $\text{minimum equivalent resistance } R_1 \text{ and maximum equivalent}$ $\text{resistance } R_2 \text{ among various possible combinations.}$ $\text{So, } \frac{R_2}{R_1} \text{ is equal to:}$ 1 118 JEE MCQ NEW $1$, $100$... 2 Edit Delete
20317 $\text{If the length of a conductor is increased by 20 percent and cross-sectional area is decreased by 4 percent, then calculate the percentage change in resistance of a conductor.}$ 1 118 JEE MCQ NEW $27\%$, $25\%$... 2 Edit Delete
20316 $\text{When current of } 4 \text{ A is made to run through a resistance of } R \text{ ohms for } 10 \text{ s, it produces heat energy of } H \text{ units.}$ $\text{Now if } 16 \text{ A of current is made to flow through the same resistance for } 10 \text{ s then the heat energy produced will be:}$ 1 118 JEE MCQ NEW $16H$, $4H$... 1 Edit Delete
20315 $\text{In the circuit shown below, the value of current } I_1 \text{ (in amperes) is equal to:}$ 1 118 JEE MCQ NEW $-\frac{11}{5}$, $\frac{11}{5}$... 1 Edit Delete
20314 $\text{What is the equivalent resistance of the given circuit across the terminals of ideal battery?}$ 1 118 JEE MCQ NEW $2R$, $3R$... 2 Edit Delete
20313 $A \ 1 \ \text{m long wire is broken into two unequal parts} \ X \ \text{and} \ Y.$ $\text{The} \ X \ \text{part of the wire is stretched into another wire} \ W.$ $\text{Length of} \ W \ \text{is twice the length of} \ X \ \text{and the resistance of} \ W \ \text{is twice that of} \ Y.$ $\text{The ratio of the length of} \ X \ \text{and} \ Y \ \text{is:}$ 1 118 JEE MCQ NEW $1 : 4$, $1 : 2$... 2 Edit Delete
20312 $\text{Given below are two statements:}$ $\text{Assertion (A): Alloys such as constantan and manganin are used in making standard resistance coils.}$ $\text{Reason (R): Constantan and manganin have a very small value of temperature coefficient of resistance.}$ 1 118 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
20311 112 1 118 JEE MCQ NEW 1, 2... 1 Edit Delete
20310 $\text{Two metallic wires of identical dimensions are connected in series. If } \sigma_1 \text{ and } \sigma_2 \text{ are the conductivities of these wires respectively, the effective conductivity of the combination is:}$ 1 118 JEE MCQ NEW $\frac{\sigma_1 \sigma_2}{\sigma_1 + \sigma_2}$, $\frac{2 \sigma_1 \sigma_2}{\sigma_1 + \sigma_2}$... 2 Edit Delete
20309 $\text{A wire of resistance } R_1 \text{ is drawn out so that its length is increased by twice its original length. The ratio of new resistance to original resistance is:}$ 1 118 JEE MCQ NEW $9 : 1$, $1 : 9$... 1 Edit Delete
20308 $\text{In the given figure of the meter bridge experiment, the balancing length } AC \text{ corresponding to the null deflection of the galvanometer is } 40 \text{ cm. The balancing length, if the radius of the wire } AB \text{ is doubled, will be:}$ 1 118 JEE MCQ NEW $20 \text{ cm}$, $30 \text{ cm}$... 3 Edit Delete
20307 $\text{A 1 m long copper wire carries a current of 1 A. If the cross-section of the wire is } 2.0 \text{ mm}^2 \text{ and the resistivity of copper is } 1.7 \times 10^{-8} \, \Omega \text{ m, the force experienced by a moving electron in the wire is:}$ $\text{(charge on electron = } 1.6 \times 10^{-19} \text{ C)}$ 1 118 JEE MCQ NEW $112 \times 10^{-23} \text{ N}$, $240 \times 10^{-23} \text{ N}$... 3 Edit Delete
20306 $\text{In a meter bridge experiment for measuring unknown resistance } S, \text{ the null point is obtained at a distance } 30 \text{ cm from the left side as shown at point } D. \text{ If } R \text{ is } 5.6 \text{ k}\Omega, \text{ then the value of unknown resistance } S \text{ will be:}$ 1 118 JEE MCQ NEW $24 \ \Omega$, $2400 \ \Omega$... 2 Edit Delete
20305 $\text{A battery of } 6 \text{ V is connected to the circuit as shown below. The current } i \text{ drawn from the battery is:}$ 1 118 JEE MCQ NEW $1 \text{ A}$, $2 \text{ A}$... 1 Edit Delete
20304 $\text{Resistances are connected in a meter bridge circuit as shown in the figure. The balancing length } l_1 \text{ is } 40 \text{ cm. Now an unknown resistance } x \text{ is connected in series with } P \text{ and the new balancing length is found to be } 80 \text{ cm measured from the same end. Then the value of } x \text{ will be:}$ 1 118 JEE MCQ NEW $10 \, \Omega$, $20 \, \Omega$... 2 Edit Delete
20303 $\text{The current } i \text{ in the given circuit will be:}$ 1 118 JEE MCQ NEW $10 \text{ A}$, $20 \text{ A}$... 1 Edit Delete
20302 $\text{A current of } 15 \text{ mA flows in the circuit as shown in the figure. The value of the potential difference between the points } A \text{ and } B \text{ will be:}$ 1 118 JEE MCQ NEW $50 \text{ V}$, $75 \text{ V}$... 4 Edit Delete
20301 $\text{Eight copper wire of length } l \text{ and diameter } d \text{ are joined in parallel to form a single composite conductor of resistance } R. \text{ If a single copper wire of length } 2l \text{ have the same resistance } (R) \text{ then its diameter will be:}$ 1 118 JEE MCQ NEW $4d$, $3d$... 1 Edit Delete
20300 $\text{The combination of two identical cells, whether connected in series or parallel combination provides the same current through an external resistance of } 2 \, \Omega. \text{ The value of the internal resistance of each cell is:}$ 1 118 JEE MCQ NEW $2 \, \Omega$, $4 \, \Omega$... 1 Edit Delete
20299 $\text{For the network shown below, the value } V_B - V_A \text{ is:}$ 1 118 JEE MCQ NEW $10 \text{ V}$, $15 \text{ V}$... 1 Edit Delete
20298 $\text{Two coils require } 20 \text{ minutes and } 60 \text{ minutes respectively to produce the same amount of heat energy when connected separately to the same source. If they are connected in parallel arrangement to the same source; the time required to produce the same amount of heat by the combination of coils will be:}$ $1. \ 10 \ \text{min}$ $2. \ 30 \ \text{min}$ $3. \ 15 \ \text{min}$ $4. \ 25 \ \text{min}$ 1 118 JEE MCQ NEW $10 \ \text{min}$, $30 \ \text{min}$... 3 Edit Delete
20297 $\text{All resistances in the figure are } 1 \, \Omega \text{ each. The value of the current } I \text{ is } \frac{a}{5} \, \text{A. The value of } a \text{ is:}$ 1 118 JEE MCQ NEW $8$, $6$... 1 Edit Delete
20296 $\text{Resistance of the wire is measured as } 2 \, \Omega \text{ and } 3 \, \Omega \text{ at } 10^\circ \text{C and } 30^\circ \text{C respectively.}$ $\text{The temperature co-efficient of resistance of the material of the wire is:}$ 1 118 JEE MCQ NEW $0.033^\circ \text{C}^{-1}$, $-0.033^\circ \text{C}^{-1}$... 1 Edit Delete
20295 $\text{The current density in a cylindrical wire of radius } r = 4.0 \text{ mm is } 1.0 \times 10^6 \text{ A/m}^2. \text{ The current through the outer portion of the wire between radial distances } \frac{r}{2} \text{ and } r \text{ is } x\pi \text{ A, where } x \text{ is:}$ 1 118 JEE MCQ NEW $10$, $14$... 4 Edit Delete
20294 $\text{The current density in a cylindrical wire of radius } 4 \text{ mm is } 4 \times 10^6 \text{ Am}^{-2}. \text{ The current through the outer portion of the wire between radial distance } \frac{R}{2} \text{ and } R \text{ is:}$ 1 118 JEE MCQ NEW $16\pi \text{ A}$, $64\pi \text{ A}$... 4 Edit Delete
20293 $\text{The equivalent resistance between points } A \text{ and } B \text{ in the given network is:}$ 1 118 JEE MCQ NEW $65 \, \Omega$, $20 \, \Omega$... 3 Edit Delete
20292 $\text{An aluminium wire is stretched to make its length, } 0.4\% \text{ larger. Then, the percentage change in resistance is:}$ 1 118 JEE MCQ NEW $0.4\%$, $0.2\%$... 3 Edit Delete
20291 $\text{The length of a given cylindrical wire is increased to double of its original length. The percentage increase in the resistance of the wire will be:}$ 1 118 JEE MCQ NEW $400$, $200$... 4 Edit Delete
20290 $\text{Two cells of the same emf but different internal resistances } r_1 \text{ and } r_2 \text{ are connected in series with a resistance } R. \text{ The value of resistance } R, \text{ for which the potential difference across the second cell is zero, is:}$ 1 118 JEE MCQ NEW $r_2 - r_1$, $r_1 - r_2$... 1 Edit Delete
20289 $\text{The total current supplied to the circuit as shown in the figure by the } 5 \text{ V battery is:}$ 1 118 JEE MCQ NEW $4 \text{ A}$, $1 \text{ A}$... 3 Edit Delete
20288 $\text{A resistor develops } 300 \text{ J of thermal energy in } 15 \text{ s when a current of } 2 \text{ A is passed through it. If the current increases to } 3 \text{ A, the energy developed in } 10 \text{ s is:}$ 1 118 JEE MCQ NEW $150 \text{ J}$, $250 \text{ J}$... 4 Edit Delete
20287 $\text{What will be the most suitable combination of three resistors}$ $A = 2 \, \Omega, \ B = 4 \, \Omega, \ C = 6 \, \Omega \ \text{so that} \ \left( \frac{22}{3} \right) \, \Omega \ \text{is the equivalent resistance of combination?}$ 1 118 JEE MCQ NEW $\text{Parallel combination of} \ A \ \text{and} \ C \ \text{connected in series with} \ B.$, $\text{Parallel combination of} \ A \ \text{and} \ B \ \text{connected in series with} \ C.$... 2 Edit Delete
20286 $\text{A cylindrical wire of radius } 0.5 \text{ mm and conductivity } 5 \times 10^7 \text{ S/m is subjected to an electric field of } 10 \text{ mV/m. The expected value of current in the wire will be:}$ $1. \ 125\pi \ \text{mA}$ $2. \ 250\pi \ \text{mA}$ $3. \ 325\pi \ \text{mA}$ $4. \ 420\pi \ \text{mA}$ 1 118 JEE MCQ NEW $125\pi \ \text{mA}$, $250\pi \ \text{mA}$... 1 Edit Delete
20285 $\text{A circuit to verify Ohm's law uses ammeter and voltmeter in series or parallel connected correctly to the resistor. In the circuit:}$ 1 118 JEE MCQ NEW $\text{The ammeter is always connected in series and the voltmeter is in parallel.}$, $\text{Both the ammeter and voltmeter must be connected in series.}$... 1 Edit Delete
20284 $\text{An electrical power line, having a total resistance of } 2 \, \Omega, \text{ delivers } 1 \, \text{kW at } 220 \, \text{V. The efficiency of the transmission line is approximately:}$ $1. \, 72\%$ $2. \, 96\%$ $3. \, 91\%$ $4. \, 85\%$ 1 118 JEE MCQ NEW $72\%$, $96\%$... 2 Edit Delete
20283 $\text{Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity } \rho_C, \rho_T, \rho_M \text{ and } \rho_A \text{ respectively. Then:}$ 1 118 JEE MCQ NEW $\rho_C > \rho_A > \rho_T$, $\rho_M > \rho_A > \rho_C$... 2 Edit Delete
20282 $\text{The mobility of electrons in a semiconductor is defined as the ratio of their drift velocity to the applied electric field. If, for an n-type semiconductor, the density of electrons is } 10^{19} \text{ m}^{-3} \text{ and their mobility is } 1.6 \text{ m}^2/(\text{V.s}), \text{ then the resistivity of the semiconductor (since it is an n-type semiconductor, the contribution of holes is ignored) is close to:}$ 1 118 JEE MCQ NEW $2 \, \Omega \text{m}$, $4 \, \Omega \text{m}$... 3 Edit Delete
20281 $\text{The drift speed of electrons, when } 1.5 \text{ A of current flows in a copper wire of cross-section } 5 \text{ mm}^2, \text{ is } v. \text{ If the electron density in copper is } 9 \times 10^{28}/\text{m}^3, \text{ then the value of drift speed } v \text{ in mm/s is close to: (take charge of electron to be } e = 1.6 \times 10^{-19} \text{ C)}$ 1 118 JEE MCQ NEW $0.02$, $3$... 1 Edit Delete
20280 $\text{Space between two concentric conducting spheres of radii } a \text{ and } b \ (b > a) \text{ is filled with a medium of resistivity } \rho. \text{ The resistance between the two spheres will be:}$ 1 118 JEE MCQ NEW $\frac{\rho}{2\pi} \left( \frac{1}{a} + \frac{1}{b} \right)$, $\frac{\rho}{4\pi} \left( \frac{1}{a} + \frac{1}{b} \right)$... 4 Edit Delete
20279 $\text{A current of } 5 \text{ A passes through a copper conductor (resistivity=} 1.7 \times 10^{-8} \, \Omega \text{m) of radius of cross-section } 5 \, \text{mm.}$ $\text{Find the mobility of the charges if their drift velocity is } 1.1 \times 10^{-3} \, \text{m/s.}$ 1 118 JEE MCQ NEW $1.0 \, \text{m}^2/\text{Vs}$, $1.8 \, \text{m}^2/\text{Vs}$... 1 Edit Delete
20278 $\text{A cell of internal resistance } r \text{ drives current through an external resistance } R. \text{ The power delivered by the cell to the external resistance will be maximum when:}$ $1. \ R = 1000r$ $2. \ R = 0.001r$ $3. \ R = 2r$ $4. \ R = r$ 1 118 JEE MCQ NEW $R = 1000r$, $R = 0.001r$... 4 Edit Delete
20277 $A \ 200 \, \Omega \ \text{resistor has a certain color code. If one replaces the red color by green in the code, the new resistance will be:}$ 1 118 JEE MCQ NEW $100 \, \Omega$, $500 \, \Omega$... 2 Edit Delete
20276 $\text{In the given circuit all resistances are of value of } R \text{ ohm each. The equivalent resistance between } A \text{ and } B \text{ is:}$ 1 118 JEE MCQ NEW $\frac{5R}{2}$, $3R$... 4 Edit Delete
20275 $\text{In a meter bridge, as shown in the figure. It is given that resistance } Y = 12.5 \, \Omega \text{ and that balance are obtained at a distance } 39.5 \, \text{cm from the end } A \text{ (by Jockey } J). \text{ After interchanging the resistances } X \text{ and } Y, \text{ a new balance point is found at a distance } l_2 \text{ from the end } A. \text{ What are the values of } X \text{ and } l_2?}$ 1 118 JEE MCQ NEW $19.15 \, \Omega \text{ and } 39.5 \, \text{cm}$, $8.16 \, \Omega \text{ and } 60.5 \, \text{cm}$... 2 Edit Delete
20274 $\text{A uniform wire of length } l \text{ and radius } r \text{ has a resistance of } 100 \, \Omega. \text{ It is recast into a wire of radius } \frac{r}{2}. \text{ The resistance of the new wire will be:}$ 1 118 JEE MCQ NEW $400 \, \Omega$, $100 \, \Omega$... 4 Edit Delete
20273 $\text{The figure shows three circuits I, II and III which are connected to a } 3 \text{ V battery. If the powers dissipated by the configurations I, II and III are } P_1, P_2 \text{ and } P_3 \text{ respectively, then:}$ 1 118 JEE MCQ NEW $P_3 > P_2 > P_1$, $P_2 > P_1 > P_3$... 2 Edit Delete
20272 $A \ 9 \ \text{V} \ \text{battery with internal resistance of} \ 0.5 \ \Omega \ \text{is connected across an infinite network as shown in the figure. All ammeters} \ A_1, A_2, A_3 \ \text{and voltmeter} \ V \ \text{are ideal.}$ 1 118 JEE MCQ NEW $\text{Reading of the voltmeter} \ V \ \text{is} \ 9 \ \text{V}$, $\text{Reading of the ammeter} \ A_1 \ \text{is} \ 18 \ \text{A}$... 3 Edit Delete
20271 $\text{In the electric network shown, when no current flows through the } 4 \, \Omega \text{ resistor in the arm } EB, \text{ the potential difference between the point } A \text{ and } D \text{ will be:}$ 1 118 JEE MCQ NEW $6 \, V$, $3 \, V$... 3 Edit Delete
20270 $\text{Suppose the drift velocity } v_d \text{ in a material varied with the applied electric field } E \text{ as } v_d \propto \sqrt{E}. \text{ Then a } V-I \text{ graph for a wire of such a material is best given by:}$ 1 118 JEE MCQ NEW $\text{Option 1: Graph with a peak}$, $\text{Option 2: Exponential curve}$... 2 Edit Delete
20269 $\text{Consider the circuit shown.}$ $\text{The ammeter reads } 0.9 \text{ A. Then the value of } R \text{ is:}$ 1 118 JEE MCQ NEW $30 \, \Omega$, $40 \, \Omega$... 1 Edit Delete
20268 $\text{In a given circuit, an ideal battery is connected with four resistances as shown. Find the current } i \text{ as mentioned in the diagram.}$ 1 118 JEE MCQ NEW $2 \text{ A}$, $1 \text{ A}$... 2 Edit Delete
20267 $\text{A rod of length } l \text{ having a resistance } R, \text{ is cut into two equal parts.}$ $\text{These parts are connected in parallel then the new resistance is:}$ 1 118 JEE MCQ NEW $R$, $\frac{R}{2}$... 3 Edit Delete
20266 $\text{Find the magnitude of potential difference in volt between A and B in given circuit.}$ 1 118 JEE MCQ NEW $2 \text{ V}$, $0$... 3 Edit Delete
20265 $\text{Circuit I is converted to voltmeter after adding resistance } R \text{ and current in circuit I is } 1 \text{ mA.}$ $\text{Circuit II is converted to ammeter after adding resistance } r \text{ as shown.}$ $\text{If current through battery in circuit II is } 10 \text{ mA and current through galvanometer is } 1 \text{ mA,}$ $\text{then find } R \text{ and } r \text{ if resistance of galvanometer is } 54 \, \Omega.$ 1 118 JEE MCQ NEW $R = 49946 \, \Omega, \; r = 54 \, \Omega$, $R = 6 \, \Omega, \; r = 49946 \, \Omega$... 4 Edit Delete
20264 $\text{If a wire of resistance } R \text{ is connected across } V_0, \text{ then power is } P_0. \text{ The wire is cut into two equal parts and connected with } V_0 \text{ individually, then sum of power dissipated is } P_1 \text{ then } \frac{P_0}{P_1} \text{ is:}$ 1 118 JEE MCQ NEW $\frac{1}{2}$, $\frac{3}{2}$... 4 Edit Delete
20263 $\text{Select increasing order of power consumption.}$ 1 118 JEE MCQ NEW $P_1 < P_2 < P_4 < P_3$, $P_3 < P_4 < P_1 < P_2$... 4 Edit Delete
20262 $\text{The equivalent resistance of the following circuit (in ohms) is equal to } \frac{x}{7}. \text{ What is the value of } x?$ 1 118 JEE MCQ NEW $14$, $10$... 4 Edit Delete
20261 $\text{Find the equivalent resistance between points } A \text{ and } B \text{ in the given circuit.}$ 1 118 JEE MCQ NEW $6.4 \, \Omega$, $4 \, \Omega$... 3 Edit Delete
20260 $\text{The effective resistance in the following circuit across terminal } A \text{ and } B \text{ is equal to:}$ $\begin{array}{c} \begin{array}{cccc} & 20 \, \Omega & 20 \, \Omega & 10 \, \Omega \end{array} \\ A \hspace{1cm} \text{ } \hspace{1cm} B \end{array}$ 1 118 JEE MCQ NEW $5 \, \Omega$, $10 \, \Omega$... 1 Edit Delete
20259 $\text{What is the ratio of potential difference across } C_1 \text{ and } C_2 \text{ at steady state for the given circuit?}$ 1 118 JEE MCQ NEW $4 : 5$, $2 : 5$... 1 Edit Delete
20258 $\text{In the given circuit, the current passes through } 20 \, \Omega \text{ is:}$ 1 118 JEE MCQ NEW $0.45 \, \text{A}$, $0.23 \, \text{A}$... 3 Edit Delete
20257 $\text{In the given circuit, the reading on the ideal voltmeter is equal to:}$ 1 118 JEE MCQ NEW $3 \text{ V}$, $1.8 \text{ V}$... 3 Edit Delete
20256 $\text{A uniform wire of resistance } R \text{ is folded into a regular polygon of } n \text{ sides. The equivalent resistance of this system between any two adjacent points is:}$ 1 118 JEE MCQ NEW $\frac{n-1}{n} R$, $\frac{n-1}{n^2} R$... 2 Edit Delete
20255 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):}$ $\text{Assertion (A): For making a voltmeter, we prefer a voltmeter of resistance of 4000 } \Omega \text{ over a voltmeter of resistance 1000 } \Omega.$ $\text{Reason (R): Voltmeter should be of higher resistance such that it draws less current from the circuit.}$ $\text{In the light of the above statements choose the correct answer from the options given below:}$ 1 118 JEE MCQ NEW $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
20254 $\text{Consider the following circuit. All resistors have resistance } 10 \, \Omega \text{ each. The value of } \left| \frac{i_1 + i_2}{i_3} \right| \text{ is:}$ 1 118 JEE MCQ NEW $2$, $1$... 1 Edit Delete
20253 $\text{In the circuit shown, the equivalent resistance between terminals } A \text{ and } B \text{ is:}$ 1 118 JEE MCQ NEW $\frac{3R}{2}$, $2R$... 4 Edit Delete
20252 $\text{The current through a } 5 \, \Omega \text{ resistance remains the same, irrespective of its connection across a series or parallel combination of two identical cells. The internal resistance of the cell is:}$ 1 118 JEE MCQ NEW $5 \, \Omega$, $10 \, \Omega$... 1 Edit Delete
20251 $\text{A conductor of length } l \text{ and cross-sectional area } A \text{ has drift velocity } v_d$ $\text{when used across a potential difference } V.$ $\text{When another conductor of the same material and length } l \text{ but}$ $\text{double cross-sectional area than the first, is used across}$ $\text{the same potential difference then drift velocity is equal to:}$ 1 118 JEE MCQ NEW $\frac{v_d}{2}$, $v_d$... 2 Edit Delete
20250 $\text{If } n : \text{ number density of charge carriers.}$ $A : \text{ cross-sectional area of the conductor}$ $q : \text{ charge on each charge carrier}$ $I : \text{ current through the conductor}$ $\text{Then the expression of drift velocity is:}$ 1 118 JEE MCQ NEW $\frac{nAq}{I}$, $\frac{I}{nAq}$... 2 Edit Delete
20249 $\text{For the given electrical circuit, the potential difference between point } B \text{ and } C \text{ is zero. The value of } x \text{ is:}$ 1 118 JEE MCQ NEW $\frac{1}{2} \Omega$, $\frac{2}{3} \Omega$... 1 Edit Delete
20248 $\text{In the part of a circuit shown, the ratio of the rate of heat produced in } R \text{ to that in } 3R \text{ is:}$ 1 118 JEE MCQ NEW $1:9$, $1:3$... 3 Edit Delete
20247 $\text{Consider the meter bridge setup shown.}$ $\text{If a shunt resistance is added to } 3 \, \Omega \text{ resistor, the balance point shifts by } 22.5 \, \text{cm.}$ $\text{The shunt resistance is equal to:}$ 1 118 JEE MCQ NEW $1 \, \Omega$, $2 \, \Omega$... 2 Edit Delete
20246 $\text{A wire with a resistance of } 5 \, \Omega \text{ is stretched (redrawn) to increase its length 5 times. What will be the final resistance of the wire?}$ 1 118 JEE MCQ NEW $25 \, \Omega$, $16 \, \Omega$... 3 Edit Delete
20245 $\text{In the circuit shown in the figure, the internal resistances of } 5 \text{ V and } 8 \text{ V cells are } 3 \, \Omega \text{ and } 4 \, \Omega, \text{ respectively. The current (in amperes) flows through the } 4 \, \Omega \text{ external resistor connected across points } A \text{ and } B \text{ is } \frac{1}{n} \text{ A.}$ 1 118 JEE MCQ NEW $5$, $15$... 3 Edit Delete
20244 $\text{Consider a network of resistors as shown. The effective resistance across } A \text{ and } B \text{ is given by:}$ 1 118 JEE MCQ NEW $5 \, \Omega$, $3 \, \Omega$... 1 Edit Delete
20243 $\text{In the circuit shown, the current through } R_4 \ (I_4) \text{ and } R_5 \ (I_5) \text{ is:}$ 1 118 JEE MCQ NEW $I_4 = \frac{24}{55} \text{ A, and } I_5 = \frac{96}{55} \text{ A}$, $I_4 = \frac{96}{55} \text{ A, and } I_5 = \frac{24}{55} \text{ A}$... 1 Edit Delete
20242 $\text{As shown in the figure, in a steady state, the charge stored in the capacitor is } x \times 10^{-6} \text{ C. The value of } x \text{ is:}$ 1 118 JEE MCQ NEW $20$, $10$... 2 Edit Delete
20241 $\text{Two identical cells, each having EMF } E, \text{ are connected in series to an external resistance } R. \text{ The internal resistances of the cells are } r_1 \text{ and } r_2, \text{ with } r_1 > r_2. \text{ If the potential difference across the cell of internal resistance } r_1 \text{ is zero, then the value of } R \text{ is:}$ 1 118 JEE MCQ NEW $(r_1 - r_2)$, $\frac{r_1 r_2}{(r_1 + r_2)}$... 1 Edit Delete
20240 $\text{In the given figure, the value of } V_0 \text{ will be:}$ 1 118 JEE MCQ NEW $2 \text{ V}$, $4 \text{ V}$... 2 Edit Delete
20239 $\text{Two resistors are connected in series across a battery as shown in the figure. If a voltmeter of resistance } 2000 \, \Omega \text{ is used to measure the potential difference across } 500 \, \Omega \text{ resistor, the reading of the voltmeter will be:}$ 1 118 JEE MCQ NEW $1.8 \, \text{V}$, $4 \, \text{V}$... 1 Edit Delete
20238 $\text{A capacitor is discharging through a resistor } R. \text{ Consider in time } t_1,$ $\text{the energy stored in the capacitor reduces to half of its initial value}$ $\text{and in time } t_2, \text{ the charge stored reduces to one-eighth of its initial}$ $\text{value. The ratio } \frac{t_1}{t_2} =$ 1 118 JEE MCQ NEW $\frac{1}{2}$, $\frac{1}{3}$... 4 Edit Delete
20237 $\text{The variation of applied potential, } V \text{ and the current, } I \text{ flowing through a given wire is shown in the figure.}$ $\text{The length of the wire is } 31.4 \text{ cm.}$ $\text{The diameter of the wire is measured as } 2.4 \text{ cm.}$ $\text{The resistivity of the given wire is measured as } x \times 10^{-3} \, \Omega\text{-cm.}$ $\text{The value of } x \text{ is:}$ $\text{(take } \pi = 3.14)$ 1 118 JEE MCQ NEW 146, 142... 4 Edit Delete
20236 $\text{Current measured by the ammeter } A \text{ in the reported circuit when no current flows through } 10 \, \Omega \text{ resistance will be:}$ 1 118 JEE MCQ NEW $20 \, A$, $30 \, A$... 3 Edit Delete
20235 $\text{A meter bridge setup is shown in the figure. It is used to determine an unknown resistance } R \text{ using a given resistor of } 15 \, \Omega. \text{ The galvanometer } (G) \text{ shows a null deflection when the tapping key is at } 43 \, \text{cm mark from end } A. \text{ If the end correction for end } A \text{ is } 2 \, \text{cm, then the determined value of } R \text{ will be:}$ 1 118 JEE MCQ NEW $19 \, \Omega$, $22 \, \Omega$... 1 Edit Delete
20234 $\text{In the given circuit, } a \text{ is an arbitrary constant. The value of } m \text{ for which the equivalent circuit resistance is minimum will be } \sqrt{\frac{x}{2}}. \text{ The value of } x \text{ is:}$ 1 118 JEE MCQ NEW $1$, $9$... 3 Edit Delete
20233 $\text{Two identical cells, each of EMF } 1.5 \text{ V and internal resistance } r, \text{ are connected in parallel and used to supply a parallel combination of two resistors, each of resistance } 20 \, \Omega. \text{ A voltmeter across the resistor network reads } 1.2 \, \text{V. What is the internal resistance } r \text{ of each cell?}$ 1 118 JEE MCQ NEW $2.5 \, \Omega$, $4 \, \Omega$... 3 Edit Delete
20232 $\text{A wire of } 1 \, \Omega \text{ has a length of } 1 \, \text{m. It is stretched till its length increases by } 25\%. \text{ The percentage change in resistance to the nearest integer is:}$ 1 118 JEE MCQ NEW $56\%$, $25\%$... 1 Edit Delete
20231 $\text{Five equal resistances are connected in a network as shown in the figure. The net resistance between point } A \text{ and point } B \text{ is:}$ 1 118 JEE MCQ NEW $\frac{2R}{R}$, $\frac{2}{3R}$... 4 Edit Delete
20230 $\text{A current of } 6 \text{ A enters at the corner } P \text{ of an equilateral triangle } PQR, \text{ with each side having a wire of resistance } 2 \, \Omega. \text{ The current exits at corner } R. \text{ The current } i_1 \text{ in ampere is:}$ 1 118 JEE MCQ NEW $2$, $3$... 1 Edit Delete
20229 $\text{A cell } E_1 \text{ of emf } 6 \text{ V and internal resistance } 2 \, \Omega \text{ is connected with another cell } E_2 \text{ of emf } 4 \text{ V and internal resistance } 8 \, \Omega \text{ (as shown in the figure). The potential difference across points } X \text{ and } Y \text{ is:}$ 1 118 JEE MCQ NEW $10 \, \text{V}$, $3.6 \, \text{V}$... 3 Edit Delete
20228 $\text{A current through a wire depends on time as } \dot{i} = \alpha_0 t + \beta t^2 \text{ where } \alpha_0 = 20 \text{ A/s and } \beta = 8 \text{ As}^{-2}. \text{ The charge crossed through a cross-section of wire in } 15 \text{ s is:}$ 1 118 JEE MCQ NEW $2250 \text{ C}$, $11250 \text{ C}$... 2 Edit Delete
20227 $\text{In the figure shown, the current in the } 10 \text{ V battery is close to:}$ 1 118 JEE MCQ NEW $0.36 \text{ A from negative to positive terminal.}$, $0.71 \text{ A from positive to negative terminal.}$... 3 Edit Delete
20226 $\text{In the circuit, given in the figure currents in different branches and}$ $\text{value of one resistor are shown. Then potential at point } B \text{ with}$ $\text{respect to the point } A \text{ is:}$ 1 118 JEE MCQ NEW $+1 \text{ V}$, $-1 \text{ V}$... 2 Edit Delete
20225 $\text{Four resistances } 40 \, \Omega, 60 \, \Omega, 90 \, \Omega \text{ and } 110 \, \Omega \text{ make the arms of a quadrilateral } ABCD. \text{ Across } AC \text{ is a battery of emf } 40 \, V \text{ and internal resistance negligible. The potential difference across } BD \text{ in } V \text{ is:}$ 1 118 JEE MCQ NEW $4$, $3$... 3 Edit Delete
20224 $\text{In the given circuit, an } 8\ \text{V battery powers a network of resistors. The current } i_1 \text{ flows from point } A \text{ to point } C \text{ through the resistor network. The value of } i_1 \text{ is:}$ 1 118 JEE MCQ NEW $2\ \text{A}$, $1\ \text{A}$... 2 Edit Delete
20223 $\text{A battery of } 3.0 \text{ V is connected to a resistor dissipating } 0.5 \text{ W of power.}$ $\text{If the terminal voltage of the battery is } 2.5 \text{ V, the power}$ $\text{dissipated within the internal resistance is:}$ 1 118 JEE MCQ NEW $0.10 \text{ W}$, $0.072 \text{ W}$... 1 Edit Delete
20222 23 1 118 JEE MCQ NEW 1, 2... 1 Edit Delete
20221 $\text{Model a torch battery of length } l \text{ to be made up of a thin cylindrical bar of radius } a \text{ and a concentric thin cylindrical shell of radius } b \text{ filled in between with an electrolyte of resistivity } \rho \text{ (see figure).}$ $\text{If the battery is connected to a resistance of value } R, \text{ the maximum Joule heating in } R \text{ will take place for:}$ 1 118 JEE MCQ NEW $R = \frac{2\rho}{\pi l} \ln \left( \frac{b}{a} \right)$, $R = \frac{\rho}{\pi l} \ln \left( \frac{b}{a} \right)$... 4 Edit Delete
20220 $\text{An ideal cell of emf } 10 \text{ V is connected in circuit shown in figure. Each resistance is } 2 \, \Omega. \text{ The potential difference (in V) across the capacitor when it is fully charged is:}$ 1 118 JEE MCQ NEW $2$, $4$... 4 Edit Delete
20219 20 1 118 JEE MCQ NEW 1, 2... 1 Edit Delete
20218 $\text{One kg of water, at } 20^\circ \text{C, heated in an electric kettle whose heating element has a mean (temperature averaged) resistance of } 20 \, \Omega. \text{ The rms voltage in the mains is } 200 \, \text{V. Ignoring heat loss from the kettle, time taken for water to evaporate fully, is close to:}$ $\text{[Specific heat of water = } 4200 \, \text{J/(kg } ^\circ \text{C), Latent heat of water = } 2260 \, \text{kJ/kg]}$ 1 118 JEE MCQ NEW $\text{10 minutes}$, $\text{22 minutes}$... 2 Edit Delete
20217 $\text{The resistive network shown below is connected to a D.C. source of } 16 \text{ V. The power consumed by the network is } 4 \text{ Watt. The value of } R \text{ is:}$ $\varepsilon = 16 \text{ V}$ 1 118 JEE MCQ NEW $16 \, \Omega$, $1 \, \Omega$... 3 Edit Delete
20216 $\text{In an experiment, the resistance of a material is plotted as a function of temperature (in some range). As shown in the figure, it is a straight line.}$ $\ln R(T)$ $\frac{1}{T^2}$ $\text{One may conclude that:}$ 1 118 JEE MCQ NEW $R(T) = R_0 e^{T^2/T_0^2}$, $R(T) = \frac{R_0}{T^2}$... 4 Edit Delete
20215 $\text{In the given circuit, an ideal voltmeter connected across the } 10 \, \Omega \text{ resistance reads } 2 \, \text{V. The internal resistance } r, \text{ of each cell is:}$ 1 118 JEE MCQ NEW $1 \, \Omega$, $0.5 \, \Omega$... 2 Edit Delete
20214 $\text{A metal wire of resistance } 3 \, \Omega \text{ is elongated to make a uniform wire of double its previous length. This new wire is now bent and the ends are joined to make a circle. If two points on this circle make an angle } 60^\circ \text{ at the centre, the equivalent resistance between these two points will be:}$ 1 118 JEE MCQ NEW $\frac{5}{2} \, \Omega$, $\frac{5}{3} \, \Omega$... 2 Edit Delete
20213 $\text{A wire of resistance } R \text{ is bent to form a square } ABCD \text{ as shown in the figure. The effective resistance between } E \text{ and } C \text{ is: } (E \text{ is mid-point of arm } CD)$ 1 118 JEE MCQ NEW $\frac{3}{4} R$, $\frac{1}{16} R$... 3 Edit Delete
20212 $\text{Determine the charge on the capacitor in the following circuit:}$ $\begin{array}{c} \text{72 V} \\ \begin{array}{ccc} 6 \, \Omega & 2 \, \Omega & 10 \, \mu\text{F} \\ 4 \, \Omega & 10 \, \Omega & \end{array} \end{array}$ 1 118 JEE MCQ NEW $200 \, \mu\text{C}$, $10 \, \mu\text{C}$... 1 Edit Delete
20211 $\text{In the figure shown, what is the current (in Ampere) drawn from the battery? You are given}$ $R_1 = 15 \, \Omega, \ R_2 = 10 \, \Omega, \ R_3 = 20 \, \Omega, \ R_4 = 5 \, \Omega, \ R_5 = 25 \, \Omega, \ R_6 = 30 \, \Omega$ 1 118 JEE MCQ NEW $\frac{7}{18}$, $\frac{20}{3}$... 3 Edit Delete
20210 $\text{For the circuit shown, with}$ $R_1 = 1.0 \, \Omega, \ R_2 = 2.0 \, \Omega, \ E_1 = 2 \, \text{V}, \ E_2 = E_3 = 4 \, \text{V}$ $\text{the potential difference between the points 'a' and 'b' is approximately (in V):}$ 1 118 JEE MCQ NEW $3.7$, $2.7$... 4 Edit Delete
20209 $\text{On interchanging the resistances, the balance point of a meter bridge shifts to the left by } 10 \text{ cm.}$ $\text{The resistance of their series combination is } 1 \text{ k}\Omega. \text{ How much was the resistance on the left slot before interchanging the resistances?}$ 1 118 JEE MCQ NEW $990 \ \Omega$, $505 \ \Omega$... 3 Edit Delete
20208 $\text{Two batteries with emf } 12 \text{ V and } 13 \text{ V are connected in parallel across a load resistor of } 10 \ \Omega. \text{ The internal resistances of the two batteries are } 1 \ \Omega \text{ and } 2 \ \Omega \text{ respectively. The voltage across the load lies between:}$ $1. \ 11.6 \ \text{V and } 11.7 \ \text{V}$ $2. \ 11.5 \ \text{V and } 11.6 \ \text{V}$ $3. \ 11.4 \ \text{V and } 11.5 \ \text{V}$ $4. \ 11.7 \ \text{V and } 11.8 \ \text{V}$ 1 118 JEE MCQ NEW $11.6 \ \text{V and } 11.7 \ \text{V}$, $11.5 \ \text{V and } 11.6 \ \text{V}$... 3 Edit Delete
20207 $\text{A potentiometer } PQ \text{ is set up to compare two resistances as shown in the figure. The ammeter } A \text{ in the circuit reads } 1.0 \text{ A when the two-way key } K_3 \text{ is open. The balance point is at a length } l_1 \text{ cm from } P \text{ when the two-way key } K_3 \text{ is plugged in between } 2 \text{ and } 1, \text{ while the balance point is at a length } l_2 \text{ cm from } P \text{ when the key } K_3 \text{ is plugged in between } 3 \text{ and } 1. \text{ The ratio of two resistances } \frac{R_1}{R_2}, \text{ is found to be:}$ 1 118 JEE MCQ NEW $\frac{l_1}{l_1 + l_2}$, $\frac{l_2}{l_2 - l_1}$... 4 Edit Delete
20206 $\text{Which of the following statements is false?}$ 1 118 JEE MCQ NEW $\text{Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude}$, $\text{In a balanced Wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed}$... 2 Edit Delete
20205 $\text{In the circuit shown, three } 1 \, \Omega \text{ resistors are connected vertically between the upper and lower conductors. Each section of both the upper and lower conductors contains an ideal } 2 \, \text{V source, all oriented in the same direction. The left ends of the two conductors are directly connected.}$ $\text{What is the current through each of the } 1 \, \Omega \text{ resistor?}$ 1 118 JEE MCQ NEW $1 \, \text{A}$, $0.25 \, \text{A}$... 4 Edit Delete
20204 $\text{In the given circuit diagram when the current reaches steady state in the circuit, the charge on the capacitor of capacitance } C \text{ will be:}$ 1 118 JEE MCQ NEW $CE$, $CE \frac{r_1}{r_2 + r}$... 3 Edit Delete
20203 $A \ 10 \ \text{V} \ \text{battery with internal resistance} \ 1 \ \Omega \ \text{and a} \ 15 \ \text{V battery with internal resistance} \ 0.6 \ \Omega \ \text{are connected in parallel to a voltmeter (see figure). The reading in the voltmeter will be:}$ 1 118 JEE MCQ NEW $11.9 \ \text{V}$, $13.1 \ \text{V}$... 2 Edit Delete
20202 $\text{In the circuit shown, the current in the } 1 \, \Omega \text{ resistor is:}$ 1 118 JEE MCQ NEW $1.3 \, \text{A, from } P \text{ to } Q$, $0 \, \text{A}$... 3 Edit Delete
20201 $\text{When } 5 \text{ V potential difference is applied across a wire of length } 0.1 \text{ m, the drift speed of electrons is } 2.5 \times 10^{-4} \text{ ms}^{-1}. \text{ If the electron density in the wire is } 8 \times 10^{28} \text{ m}^{-3}, \text{ the resistivity of the material is close to:}$ 1 118 JEE MCQ NEW $1.6 \times 10^{-8} \ \Omega\text{-m}$, $1.6 \times 10^{-7} \ \Omega\text{-m}$... 4 Edit Delete
20200 $\text{In a large building, there are 15 bulbs of } 40 \text{ W, 5 bulbs of } 100 \text{ W, 5 fans of } 80 \text{ W and 1 heater of } 1 \text{ kW. The voltage of the electric mains is } 220 \text{ V. The minimum capacity of the main fuse of the building will be:}$ $1. \ 10 \text{ A}$ $2. \ 12 \text{ A}$ $3. \ 14 \text{ A}$ $4. \ 8 \text{ A}$ 1 118 JEE MCQ NEW $10 \text{ A}$, $12 \text{ A}$... 2 Edit Delete
20199 $\text{A capacitor is made of a flat plate of area A and a second plate having a stair-like structure as shown in figure.}$ $\text{If the area of each stair is } \frac{A}{3} \text{ and the height is } d, \text{ the capacitance of the arrangement is:}$ 1 117 JEE MCQ NEW $\frac{18 \varepsilon_0 A}{11 d}$, $\frac{11 \varepsilon_0 A}{20 d}$... 4 Edit Delete
20198 $\text{Two charged conducting spheres of radii } a \text{ and } b \text{ are connected to each other by a conducting wire. The ratio of charges of the two spheres respectively is:}$ 1 117 JEE MCQ NEW $\frac{b}{a}$, $\sqrt{ab}$... 4 Edit Delete
20197 $\text{Statement I: Work done by electrostatic force is zero if a charge is moving along an equipotential surface.}$ $\text{Statement II: Equipotential surfaces are perpendicular to the electric field.}$ 1 117 JEE MCQ NEW $\text{Statement I is correct and Statement II is incorrect.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 4 Edit Delete
20196 $\text{There exists a uniform electric field of } 20\hat{i} \text{ N/C. A dipole of dipole moment } |\vec{p}| = 15 \text{ C-m is placed at angle } 30^\circ \text{ with the electric field. The torque on the dipole is:}$ 1 117 JEE MCQ NEW $250 \text{ N-m}$, $150 \text{ N-m}$... 2 Edit Delete
20195 $\text{A charge } Q = 10^{-6} \text{ C is placed at the origin. Find the potential difference between two points } A \text{ and } B \text{ whose position vectors are } (\sqrt{3} \mathbf{i} + \sqrt{3} \mathbf{j}) \text{ m and } (\sqrt{6} \mathbf{j}) \text{ m respectively.}$ 1 117 JEE MCQ NEW $\text{zero}$, $1000 \text{ volts}$... 1 Edit Delete
20194 $64$ $\text{identical balls made of conducting material with a potential of } 10 \text{ mV are joined to form a bigger ball. The potential of the bigger ball is:}$ 1 117 JEE MCQ NEW $150 \text{ mV}$, $160 \text{ mV}$... 2 Edit Delete
20193 $\text{Potential at the surface of a uniformly charged nonconducting sphere is } V. \text{ Then the potential at its centre is:}$ 1 117 JEE MCQ NEW $0$, $\frac{V}{2}$... 4 Edit Delete
20192 $\text{Two conducting solid spheres } A \text{ and } B \text{ are placed at a very large distance with charge densities and radii as shown. When the key } K \text{ is closed, the ratio of final charge densities will be:}$ $\sigma, R$ $A$ $K$ $\sigma, 2R$ $B$ 1 117 JEE MCQ NEW $4:1$, $1:2$... 3 Edit Delete
20191 $\text{Two charges (both at rest initially), having a charge } Q \text{ and } -Q \text{ are released from the situation shown. If the kinetic energy of the system when the separation between them becomes half, is } \frac{1}{4\pi\varepsilon_0} \frac{Q^2}{nr_0}. \text{ Then } n =?$ 1 117 JEE MCQ NEW 2, 3... 3 Edit Delete
20190 $\text{An } \alpha \text{ particle and a proton are accelerated from rest through the same potential difference. The ratio of linear momenta acquired by the above two particles will be:}$ 1 117 JEE MCQ NEW $\sqrt{2} : 1$, $2\sqrt{2} : 1$... 2 Edit Delete
20189 $\text{Two identical thin metal plates have charges } q_1 \text{ and } q_2 \text{ respectively such that } q_1 > q_2. \text{ The plates were brought close to each other to form a parallel plate capacitor of capacitance } \mathcal{C}. \text{ The potential difference between them is:}$ 1 117 JEE MCQ NEW $\frac{(q_1 + q_2)}{C}$, $\frac{(q_1 - q_2)}{C}$... 3 Edit Delete
20188 $\text{Two capacitors, each having a capacitance of } 40 \, \mu\text{F are connected in series.}$ $\text{The space between one of the capacitors is filled with a dielectric material of dielectric constant } K, \text{ such that the equivalent capacitance of the system becomes } 24 \, \mu\text{F.}$ $\text{The value of } K \text{ will be:}$ 1 117 JEE MCQ NEW $1.5$, $2.5$... 1 Edit Delete
20187 $\text{A parallel plate capacitor with a width of } 4 \text{ cm, length of } 8 \text{ cm and separation between the plates of } 4 \text{ mm is connected to a battery of } 20 \text{ V. A dielectric slab of dielectric constant } 5 \text{ having a length of } 1 \text{ cm, width of } 4 \text{ cm and thickness of } 4 \text{ mm is inserted between the plates of a parallel plate capacitor. The electrostatic energy of this system will be:}$ $\text{(where } \varepsilon_0 \text{ is the permittivity of free space)}$ 1 117 JEE MCQ NEW $120 \varepsilon_0 \text{ J}$, $140 \varepsilon_0 \text{ J}$... 3 Edit Delete
20186 $\text{Two uniformly charged spherical conductors } A \text{ and } B \text{ of radii } 5 \text{ mm and } 10 \text{ mm are separated by a distance of } 2 \text{ cm.}$ $\text{If the spheres are connected by a conducting wire, then in equilibrium condition,}$ $\text{the ratio of the magnitudes of the electric fields at the surface of the sphere } A \text{ and } B \text{ will be:}$ 1 117 JEE MCQ NEW $1 : 2$, $2 : 1$... 2 Edit Delete
20185 $\text{A composite parallel plate capacitor is made up of two different}$ $\text{dielectric materials with different thicknesses } (t_1 \text{ and } t_2) \text{ as shown in}$ $\text{the figure. The two different dielectric materials are separated by a}$ $\text{conducting foil } F. \text{ The voltage of the conducting foil is:}$ $\varepsilon_{r_1} = 3; t_1 = 0.5 \text{ mm}$ $\varepsilon_{r_2} = 4; t_2 = 1 \text{ mm}$ $100 \text{ V}$ 1 117 JEE MCQ NEW $20 \text{ V}$, $40 \text{ V}$... 4 Edit Delete
20184 $\text{The capacitance of an isolated conducting sphere of radius } R_1 \text{ becomes } n \text{ times when it is enclosed by a concentric conducting sphere of radius } R_2 \text{ connected to earth. The ratio of their radii } \left( \frac{R_2}{R_1} \right) \text{ is:}$ 1 117 JEE MCQ NEW $\frac{n}{n-1}$, $\frac{2n}{n+1}$... 1 Edit Delete
20183 $\text{A condenser of } 2 \, \mu\text{F} \text{ capacitance is charged steadily from } 0 \text{ to } 5 \, \text{C.}$ $\text{Which of the following graph represents correctly the variation of potential difference } (V) \text{ across its plates with respect to the charge } (Q) \text{ on the condenser?}$ 1 117 JEE MCQ NEW $\text{Graph 1: Linear graph from } (0, 0) \text{ to } (5, 2.5)$, $\text{Graph 2: Exponential graph starting at } (0, 0)$... 1 Edit Delete
20182 $\text{The electric potential at any point } (x, y, z) \text{ m in space is given by } V = 3x^2 \text{ V.}$ $\text{The electric field at the point } (1, 0, 3) \text{ m will be:}$ 1 117 JEE MCQ NEW $3 \text{ V/m, directed along the positive } x\text{-axis}$, $3 \text{ V/m, directed along the negative } x\text{-axis}$... 4 Edit Delete
20181 $\text{A parallel plate capacitor filled with a medium of dielectric constant } 10, \text{ is connected across a battery and is charged.}$ $\text{The dielectric slab is replaced by another slab of dielectric constant } 15. \text{ Then the energy of the capacitor will:}$ 1 117 JEE MCQ NEW $\text{increase by } 50\%$, $\text{decrease by } 15\%$... 1 Edit Delete
20180 $\text{A capacitor } C_1 \text{ of capacitance } 5 \, \mu\text{F is charged to a potential of } 30 \, \text{V using a battery.}$ $\text{The battery is then removed and the charged capacitor is connected to an uncharged capacitor } C_2 \text{ of capacitance } 10 \, \mu\text{F as shown in the figure.}$ $\text{When the switch is closed charge flows between the capacitors.}$ $\text{At equilibrium, the charge on the capacitors } C_2 \text{ is:}$ 1 117 JEE MCQ NEW $100 \, \mu\text{C}$, $50 \, \mu\text{C}$... 1 Edit Delete
20179 $\text{A parallel plate capacitor is made up of a stair-like structure with a plate area } A \text{ of each stair and that is connected with a wire of length } b, \text{ as shown in the figure. The capacitance of the arrangement is } \frac{x}{15} \frac{\varepsilon_0 A}{b}. \text{ The value of } x \text{ is:}$ 1 117 JEE MCQ NEW $13$, $23$... 2 Edit Delete
20178 $\text{A capacitor of capacitance } 50 \text{ pF is charged by a } 100 \text{ V source. It is then connected to another uncharged identical capacitor.}$ $\text{Electrostatic energy loss in the process is:}$ 1 117 JEE MCQ NEW $25 \text{ nJ}$, $125 \text{ nJ}$... 2 Edit Delete
20177 $\text{A force of } 10 \text{ N acts on a charged particle placed between two plates of a charged capacitor.}$ $\text{If one plate of the capacitor is removed, then the force acting on that particle will be:}$ 1 117 JEE MCQ NEW $5 \text{ N}$, $10 \text{ N}$... 1 Edit Delete
20176 $\text{Sixty-four conducting drops each of radius } 0.02 \text{ m and each carrying a charge of } 5 \ \mu\text{C are combined to form a bigger drop. The ratio of the surface charge density of the bigger drop to the smaller drop will be:}$ 1 117 JEE MCQ NEW $1 : 4$, $4 : 1$... 2 Edit Delete
20175 $\text{A parallel plate capacitor with plate area } A \text{ and plate separation } d = 2 \text{ m has a capacitance of } 4 \, \mu\text{F.}$ $\text{The new capacitance of the system if half of the space between them is filled with a dielectric material of dielectric constant } K = 3 \text{ (as shown in the figure) will be:}$ 1 117 JEE MCQ NEW $2 \, \mu\text{F}$, $32 \, \mu\text{F}$... 3 Edit Delete
20174 $27$ \text{ identical drops are charged at } $22 \text{ V}$ \text{ each. They combine to form a bigger drop. The potential of the bigger drop will be:}$ 1 117 JEE MCQ NEW $198 \text{ V}$, $236 \text{ V}$... 1 Edit Delete
20173 $\text{Two metallic plates form a parallel plate capacitor. The distance between the plates is } d. \text{ A metal sheet of thickness } \frac{d}{2} \text{ and area equal to the area of each plate is introduced between the plates. What will be the ratio of the new capacitance to the original capacitance of the capacitor?}$ 1 117 JEE MCQ NEW $2 : 1$, $1 : 2$... 1 Edit Delete
20172 $\text{In an electrical circuit, a battery is connected to pass } 20 \text{ C of charge through it in a certain given time. The potential difference between two plates of the battery is maintained at } 15 \text{ V. The work done by the battery is:}$ 1 117 JEE MCQ NEW $100 \text{ J}$, $200 \text{ J}$... 3 Edit Delete
20171 $\text{A capacitor with capacitance } 5 \, \mu\text{F is charged to } 5 \, \mu\text{C. If the plates are pulled apart to reduce the capacitance to } 2 \, \mu\text{F, how much work is done?}$ 1 117 JEE MCQ NEW $3.75 \times 10^{-6} \, \text{J}$, $6.25 \times 10^{-6} \, \text{J}$... 1 Edit Delete
20170 $\text{A parallel plate capacitor has } 1 \, \mu\text{F capacitance. One of its two plates is given } +2 \, \mu\text{C charge and the other plate, } +4 \, \mu\text{C charge. The potential difference developed across the capacitor is:}$ $1. \, 1 \, \text{V}$ $2. \, 2 \, \text{V}$ $3. \, 3 \, \text{V}$ $4. \, 5 \, \text{V}$ 1 117 JEE MCQ NEW $1 \, \text{V}$, $2 \, \text{V}$... 1 Edit Delete
20169 $\text{The electric field in a region is given by } \vec{E} = (Ax + B)\hat{i}, \text{ where } E \text{ is in NC}^{-1} \text{ and } x \text{ is in meters.}$ $\text{The value of constants are } A = 20 \text{ SI unit and } B = 10 \text{ SI unit.}$ $\text{If the potential at } x = 1 \text{ is } V_1 \text{ and that at } x = -5 \text{ is } V_2, \text{ then } V_1 - V_2 \text{ is:}$ 1 117 JEE MCQ NEW $-520 \text{ V}$, $180 \text{ V}$... 2 Edit Delete
20168 $\text{Voltage rating of a parallel plate capacitor is } 500 \text{ V. Its dielectric can withstand a maximum electric field of } 10^6 \text{ V/m. The plate area is } 10^{-4} \text{ m}^2. \text{ What is the dielectric constant if the capacitance is } 15 \text{ pF }? \text{ (given } \varepsilon_0 = 8.86 \times 10^{-12} \text{ C}^2/\text{Nm}^2)$ 1 117 JEE MCQ NEW 6.2, 3.8... 4 Edit Delete
20167 $\text{In the following circuit, the switch } S \text{ is closed at } t = 0. \text{ The charge on the capacitor } C_1 \text{ as a function of time will be given by:}$ $\left( \text{take } C_{eq} = \frac{C_1 C_2}{C_1 + C_2} \right)$ 1 117 JEE MCQ NEW $C_1 E \left[ 1 - e^{-tR/C_1} \right]$, $C_{eq} E \ e^{-t/RC_{eq}}$... 3 Edit Delete
20166 $\text{The equivalent capacitance between } A \text{ and } B \text{ in the circuit given below is:}$ $\begin{array}{c} \text{A} \quad \begin{array}{c} 6 \, \mu\text{F} \\ 5 \, \mu\text{F} \end{array} \quad \begin{array}{c} 2 \, \mu\text{F} \\ 5 \, \mu\text{F} \end{array} \quad \begin{array}{c} 4 \, \mu\text{F} \\ 2 \, \mu\text{F} \end{array} \quad \text{B} \end{array}$ 1 117 JEE MCQ NEW $3.6 \, \mu\text{F}$, $2.4 \, \mu\text{F}$... 2 Edit Delete
20165 $\text{A combination of parallel plate capacitors is maintained at a certain potential difference.}$ $\text{When a } 3 \text{ mm thick slab is introduced between all the plates, in order to maintain the same potential difference, the distance between the plates is increased by } 2.4 \text{ mm.}$ $\text{The dielectric constant of the slab will be:}$ 1 117 JEE MCQ NEW $6$, $5$... 2 Edit Delete
20164 $\text{The energy stored in the electric field produced by a metal sphere is } 4.5 \text{ J.}$ $\text{If the sphere contains } 4 \, \mu\text{C charge, its radius will be:}$ $\text{(Take: } \frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \, \text{N} - \text{m}^2/\text{C}^2)$ 1 117 JEE MCQ NEW $28 \, \text{mm}$, $32 \, \text{mm}$... 4 Edit Delete
20163 $\text{There is a uniform electrostatic field in a region. The potential at various points on a small sphere centered at } P, \text{ in the region, is found to vary between the limits } 589.0 \text{ V to } 589.8 \text{ V.}$ $\text{What is the potential at a point on the sphere whose radius vector makes an angle of } 60^\circ \text{ with the direction of the field?}$ 1 117 JEE MCQ NEW $589.5 \text{ V}$, $589.4 \text{ V}$... 3 Edit Delete
20162 $\text{Three capacitors each of } 4 \, \mu F \text{ are to be connected in such a way that the effective capacitance is } 6 \, \mu F. \text{ This can be done by connecting them:}$ 1 117 JEE MCQ NEW $\text{connecting all of them in a series}$, $\text{connecting all of them in parallel}$... 3 Edit Delete
20161 $\text{An electric field } \vec{E} = (25\hat{i} + 30\hat{j}) \text{ NC}^{-1} \text{ exists in a region of space.}$ $\text{If the potential at the origin is taken to be zero then the potential at } x = 2 \text{ m, } y = 2 \text{ m is:}$ 1 117 JEE MCQ NEW $-110 \text{ J}$, $-140 \text{ J}$... 1 Edit Delete
20160 $\text{The figure shows a system of four capacitors connected across a } 10 \text{ V battery. The charge that will flow from the switch } S \text{ when it is closed is:}$ 1 117 JEE MCQ NEW $5 \ \mu\text{C from } b \text{ to } a$, $20 \ \mu\text{C from } a \text{ to } b$... 1 Edit Delete
20159 $\text{Assume that an electric field } \vec{E} = 30x^2 \hat{i} \text{ exists in space. Then the potential difference } V_A - V_0, \text{ where } V_0 \text{ is the potential at the original and } V_A \text{ the potential at } x = 2 \text{ m is:}$ $1.\ -120 \text{ V}$ $2.\ -80 \text{ V}$ $3.\ 80 \text{ V}$ $4.\ 120 \text{ V}$ 1 117 JEE MCQ NEW $-120 \text{ V}$, $-80 \text{ V}$... 2 Edit Delete
20158 $\text{Consider the circuit shown:}$ $\text{Charge on } 6 \, \mu\text{F} \text{ when } A \text{ and } B \text{ are shorted is:}$ 1 117 JEE MCQ NEW $32 \, \mu\text{C}$, $40 \, \mu\text{C}$... 3 Edit Delete
20157 $\text{A square loop of resistance } 16 \, \Omega \text{ is connected with a battery of } 9 \, \text{V}$ $\text{and an internal resistance of } 1 \, \Omega. \text{ In steady state, find the energy}$ $\text{stored in a capacitor of capacity } C = 4 \, \mu \text{F} \text{ as shown. (at steady}$ $\text{state current divides symmetrically)}$ 1 117 JEE MCQ NEW $51.84 \, \mu \text{J}$, $12.96 \, \mu \text{J}$... 3 Edit Delete
20156 $\text{Find the charge on the capacitor in the given circuit at steady state.}$ 1 117 JEE MCQ NEW $\frac{40}{7} \, \mu\text{C}$, $\frac{20}{7} \, \mu\text{C}$... 1 Edit Delete
20155 $\text{In the given circuit diagram, the total charge stored in capacitors is } 50 \, \mu\text{C. The value of capacitor } x \text{ is:}$ 1 117 JEE MCQ NEW $3$, $0$... 2 Edit Delete
20154 $\text{Find energy stored in capacitor in given circuit.}$ 1 117 JEE MCQ NEW $0.2 \text{ mJ}$, $0.4 \text{ mJ}$... 1 Edit Delete
20153 $\text{A } 2 \, \mu\text{F capacitor is initially charged to a potential } V, \text{ storing an energy } E_1. \text{ The capacitor is then disconnected from the battery and connected in parallel with an identical uncharged capacitor. After the redistribution of charge, the new energy stored in the system is } E_2.$ $\text{What is the ratio } \frac{E_1}{E_2}?$ 1 117 JEE MCQ NEW $2$, $4$... 2 Edit Delete
20152 $\text{A metallic slab of thickness } \frac{2d}{3} \text{ and area of surface same as that of plates of capacitor of capacitance } C_1 \text{ is inserted parallel to plates of capacitor such that its new capacitance becomes equal to } C_2. \text{ If } d \text{ is space width between the two plates, then } \frac{C_2}{C_1} \text{ is equal to:}$ $1. \text{ 1}$ $2. \text{ 2}$ $3. \text{ 3}$ $4. \text{ 4}$ 1 117 JEE MCQ NEW $1$, $2$... 3 Edit Delete
20151 $\text{Three concentric shells } A, B \text{ and } C \text{ having surface charge density } \sigma, -\sigma \text{ and } \sigma \text{ respectively.}$ $\text{The radii of } A \text{ and } B \text{ are } 2 \text{ cm and } 3 \text{ cm respectively.}$ $\text{Electric potential at surface } A \text{ is } V_A \text{ and at } C \text{ is } V_C.$ $\text{If } V_A = V_C \text{ then find the radius of } C \text{ in cm}$ 1 117 JEE MCQ NEW $5 \text{ cm}$, $7 \text{ cm}$... 1 Edit Delete
20150 $\text{What will be the equivalent capacitance across points } A \text{ and } B \text{ in the given electrical circuit?}$ 1 117 JEE MCQ NEW $\frac{C}{2}$, $2C$... 2 Edit Delete
20149 $\text{Find the distance from a point charge of magnitude } 5 \times 10^{-9} \text{ C}$ $\text{where the electric potential is } 50 \text{ V}$ 1 117 JEE MCQ NEW $90 \text{ cm}$, $70 \text{ cm}$... 1 Edit Delete
20148 $\text{Pick the correct graph between potential } V \text{ at distance } r \text{ from centre}$ $\text{for the uniformly charged spherical shell of radius } R.$ 1 117 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 4 Edit Delete
20147 $\text{Which of the following graphs depicts the variation of electric potential, } V \text{ with radial distance, } r \text{ from the centre of a positively charged conducting sphere of radius } R?$ 1 117 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 3 Edit Delete
20146 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{Electric potential is constant within and at the surface of each conductor.}$ $\text{Statement II:}$ \text{An electric field just outside a charged conductor is perpendicular to the surface of the conductor at every point.}$ 1 117 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 1 Edit Delete
20145 $\text{A source of potential difference } V \text{ is connected to the combination of two identical capacitors as shown in the figure.}$ $\text{When key } 'K' \text{ is closed, the total energy stored across the combination is } E_1.$ $\text{Now key } 'K' \text{ is opened and dielectric of dielectric constant } 5 \text{ is introduced between the plates of the capacitors.}$ $\text{The total energy stored across the combination is now } E_2.$ $\text{The ratio } \frac{E_1}{E_2} \text{ will be:}$ 1 117 JEE MCQ NEW $\frac{1}{10}$, $\frac{2}{5}$... 3 Edit Delete
20144 $\text{The total charge on the system of capacitance } C_1 = 1 \, \mu\text{F},$ $C_2 = 2 \, \mu\text{F}, C_3 = 4 \, \mu\text{F} \text{ and } C_4 = 3 \, \mu\text{F} \text{ connected in parallel is:}$ $\text{(Assume a battery of } 20 \, \text{V is connected to the combination)}$ 1 117 JEE MCQ NEW $200 \, \mu\text{C}$, $200 \, \text{C}$... 1 Edit Delete
20143 $\text{Two parallel plate capacitors, having capacitances of } C \text{ and } 3C, \text{ are connected in parallel and charged to a potential difference of } 18 \text{ V.}$ $\text{After the charging process, the battery is disconnected, and the space between the capacitor plates with capacitance } C \text{ is completely filled with a dielectric material of dielectric constant } 9. \text{ What will be the final potential difference across the combination of capacitors?}$ 1 117 JEE MCQ NEW $3 \text{ V}$, $5 \text{ V}$... 4 Edit Delete
20142 $\text{The charge on the capacitor of capacitance } 15 \, \mu\text{F} \text{ in the figure given below is:}$ $\begin{array}{c} 10 \, \mu\text{F} \quad 15 \, \mu\text{F} \quad 20 \, \mu\text{F} \\ + - \, \text{V} \, 13 \, \text{V} \end{array}$ 1 117 JEE MCQ NEW $60 \, \mu\text{C}$, $130 \, \mu\text{C}$... 1 Edit Delete
20141 $\text{Two capacitors having capacitance } C_1 \text{ and } C_2 \text{ respectively are connected as shown in the figure.}$ $\text{Initially, capacitor } C_1 \text{ is charged to a potential difference } V \text{ volt by a battery.}$ $\text{The battery is then removed and the charged capacitor } C_1 \text{ is now connected to uncharged capacitor } C_2 \text{ by closing the switch } S. \text{ The amount of charge on the capacitor } C_2, \text{ after equilibrium, is:}$ 1 117 JEE MCQ NEW $\frac{C_1 C_2}{(C_1 + C_2)} V$, $\frac{(C_1 + C_2)}{C_1 C_2} V$... 1 Edit Delete
20140 $\text{The equivalent capacitance between points A and B in the figure (shown below) will be:}$ $\begin{array}{c} \text{A} \; \text{---} \; \text{8} \, \mu\text{F} \; \text{---} \; \text{8} \, \mu\text{F} \; \text{---} \; \text{8} \, \mu\text{F} \; \text{---} \; \text{8} \, \mu\text{F} \; \text{---} \; \text{8} \, \mu\text{F} \; \text{---} \; \text{B} \end{array}$ 1 117 JEE MCQ NEW $2 \, \mu\text{F}$, $4 \, \mu\text{F}$... 3 Edit Delete
20139 $\text{If the charge on a capacitor is increased by } 2 \ C, \text{ the energy stored in it increases by } 44\%. \text{ The original charge on the capacitor (in Coulomb) is:}$ $1. \ 10$ $2. \ 20$ $3. \ 30$ $4. \ 40$ 1 117 JEE MCQ NEW $10$, $20$... 1 Edit Delete
20138 $\text{A parallel plate capacitor is formed by two plates, each of area } 30\pi \ \text{cm}^2 \text{ separated by 1 mm. A material of dielectric strength } 3.6 \times 10^7 \ \text{Vm}^{-1} \text{ is filled between the plates. If the maximum charge that can be stored on the capacitor without causing any dielectric breakdown is } 7 \times 10^{-6} \ \text{C, the value of the dielectric constant of the material is:}$ $\left\{ \text{Use: } \frac{1}{4\pi \varepsilon_0} = 9 \times 10^9 \ \text{Nm}^2\text{C}^{-2} \right\}$ 1 117 JEE MCQ NEW $1.66$, $1.75$... 4 Edit Delete
20137 $\text{Twenty-seven identical spherical drops of mercury are each maintained at a potential of } 10 \text{ V.}$ $\text{If all these drops coalesce to form a single large spherical drop,}$ $\text{then the potential energy of this larger drop will be how many times that of one of the smaller drops?}$ 1 117 JEE MCQ NEW $143$, $243$... 2 Edit Delete
20136 $\text{Consider the combination of 2 capacitors } C_1 \text{ and } C_2, \text{ with } C_2 > C_1,$ $\text{when connected in parallel, the equivalent capacitance is } \frac{15}{4} \text{ times}$ $\text{the equivalent capacitance of the same connected in series.}$ $\text{Calculate the ratio of capacitors, } \frac{C_2}{C_1}.$ 1 117 JEE MCQ NEW $\frac{15}{11}$, $\frac{111}{80}$... 4 Edit Delete
20135 $\text{An electron with kinetic energy } K_1 \text{ enters the region between the parallel plates of a capacitor at an angle } \alpha \text{ with the plates.}$ $\text{It leaves the plates at an angle } \beta \text{ with kinetic energy } K_2. \text{ The ratio of kinetic energies } K_1 : K_2 \text{ is:}$ 1 117 JEE MCQ NEW $\frac{\sin^2 \beta}{\cos^2 \alpha}$, $\frac{\cos^2 \beta}{\cos^2 \alpha}$... 2 Edit Delete
20134 $512$ \text{ identical drops of mercury are charged to a potential of } $2V$ \text{ each.} $\text{The drops are joined to}$ $\text{form a single drop. The potential of this drop is:}$ 1 117 JEE MCQ NEW $64 \text{ V}$, $128 \text{ V}$... 2 Edit Delete
20133 $\text{Two equal capacitors are first connected in series and then in parallel. The ratio of the equivalent capacitances, } \left( \frac{C_{\text{Series}}}{C_{\text{Parallel}}} \right) \text{ in these two cases will be:}$ 1 117 JEE MCQ NEW $4 : 1$, $2 : 1$... 3 Edit Delete
20132 $\text{Two identical electric point dipoles have dipole moments } \vec{P}_1 = P\hat{i} \text{ and } \vec{P}_2 = -P\hat{i} \text{ and are held on the } x \text{ axis at distance } 'a' \text{ from each other.}$ $\text{When released, they move along the } x\text{-axis with the direction of their dipole moments remaining unchanged.}$ $\text{If the mass of each dipole is } 'm', \text{ their speed when they are infinitely far apart is:}$ 1 117 JEE MCQ NEW $\frac{P}{a} \sqrt{\frac{1}{\pi \varepsilon_0 ma}}$, $\frac{P}{a} \sqrt{\frac{3}{2\pi \varepsilon_0 ma}}$... 3 Edit Delete
20131 $\text{In the circuit shown, charge on the } 5 \, \mu\text{F capacitor is:}$ 1 117 JEE MCQ NEW $5.45 \, \mu\text{C}$, $16.36 \, \mu\text{C}$... 2 Edit Delete
20130 $\text{Ten charges are placed on the circumference of a circle of radius } R \text{ with constant angular separation between successive charges.}$ $\text{Alternate charges } 1, 3, 5, 7, 9 \text{ have charge } (+q) \text{ each, while } 2, 4, 6, 8, 10 \text{ have charge } (-q) \text{ each.}$ $\text{The potential } V \text{ and the electric field } E \text{ at the centre of the circle are respectively: (Take } V = 0 \text{ at infinity)}$ 1 117 JEE MCQ NEW $V = \frac{10q}{4\pi\varepsilon_0 R} ; E = \frac{10q}{4\pi\varepsilon_0 R^2}$, $V = 0, E = \frac{10q}{4\pi\varepsilon_0 R^2}$... 3 Edit Delete
20129 $\text{A parallel plate capacitor has plate of length } l, \text{ width } w \text{ and separation of plates is } d. \text{ It is connected to a battery of emf } V. \text{ A dielectric slab of the same thickness } d \text{ and of dielectric constant is being inserted between the plates of the capacitor. At what length of the slab inside plates, will be energy stored in the capacitor be two times the initial energy stored?}$ 1 117 JEE MCQ NEW $\frac{l}{4}$, $\frac{l}{2}$... 3 Edit Delete
20128 $\text{Two capacitors of capacitances } C \text{ and } 2C \text{ are charged to potential differences } V \text{ and } 2V, \text{ respectively. These are then connected in parallel in such a manner that the positive terminal of one is connected to the negative terminal of the other. The final energy of this configuration is:}$ 1 117 JEE MCQ NEW $\frac{9}{2}CV^2$, $\frac{25}{6}CV^2$... 4 Edit Delete
20127 $\text{A solid sphere of radius } R \text{ carries a charge } (Q + q) \text{ distributed uniformly over its volume.}$ $\text{A very small point like piece of it of mass } m \text{ gets detached from the bottom of the sphere and falls down vertically under gravity.}$ $\text{This piece carries charge } q. \text{ If it acquires a speed } v \text{ when it has fallen through a vertical height } y \text{ (see figure), then:}$ $\text{(assume the remaining portion to be spherical).}$ 1 117 JEE MCQ NEW $v^2 = 2y \left[ \frac{qQ}{4\pi\varepsilon_0 R(R+y)m} + g \right]$, $v^2 = y \left[ \frac{qQ}{4\pi\varepsilon_0 R^2 ym} + g \right]$... 1 Edit Delete
20126 $\text{A capacitor } C \text{ is fully charged with voltage } V_0. \text{ After disconnecting the voltage source, it is connected in parallel with another uncharged capacitor of capacitance } \frac{C}{2}. \text{ The energy loss in the process after the charge is distributed between the two capacitors is:}$ 1 117 JEE MCQ NEW $\frac{1}{6} CV_0^2$, $\frac{1}{3} CV_0^2$... 1 Edit Delete
20125 $\text{A two-point charges } 4q \text{ and } -q \text{ are fixed on the x-axis at } x = -\frac{d}{2} \text{ and } x = \frac{d}{2}, \text{ respectively. If a third point charge } 'q' \text{ is taken from the origin to } x = d \text{ along the semicircle as shown in the figure, the energy of the charge will:}$ 1 117 JEE MCQ NEW $\text{increased by } \frac{3q^2}{4\pi\varepsilon_0\ d}$, $\text{increase by } \frac{2q^2}{3\pi\varepsilon_0 d}$... 3 Edit Delete
20124 $\text{Concentric metallic hollow spheres radii } R \text{ and } 4R \text{ hold charges } Q_1 \text{ and } Q_2 \text{ respectively.}$ $\text{Given that surface charge densities of the concentric spheres are equal, the potential difference } V(R) - V(4R) \text{ is:}$ 1 117 JEE MCQ NEW $\frac{3Q_1}{16\pi\varepsilon_0 R}$, $\frac{3Q_1}{4\pi\varepsilon_0 R}$... 1 Edit Delete
20123 $\text{Two isolated conducting spheres } S_1 \text{ and } S_2 \text{ of radius } \frac{2R}{3} \text{ and } \frac{R}{3} \text{ have } 12 \, \mu\text{C} \text{ and } -3 \, \mu\text{C} \text{ charges, respectively, and are at a large distance from each other. They are now connected by a conducting wire. A long time after this is done the charges on } S_1 \text{ and } S_2 \text{ are respectively,}$ 1 117 JEE MCQ NEW $6 \, \mu\text{C} \text{ and } 3 \, \mu\text{C}$, $4.5 \, \mu\text{C} \text{ on both}$... 1 Edit Delete
20122 $A \ 10 \, \mu\text{F} \text{ capacitor is fully charged to a potential difference of } 50 \, \text{V.}$ $\text{After disconnecting the voltage source, it is connected in parallel with an initially uncharged capacitor.}$ $\text{The potential difference across both capacitors becomes } 20 \, \text{V.}$ $\text{The capacitance of the second capacitor is:}$ 1 117 JEE MCQ NEW $10 \, \mu\text{F}$, $15 \, \mu\text{F}$... 2 Edit Delete
20121 $\text{A charge } Q \text{ is distributed over two concentric conducting thin spherical shells radii } r \text{ and } R \ (R > r).$ $\text{If the surface charge densities on the two shells are equal, the electric potential at the common centre is:}$ 1 117 JEE MCQ NEW $\frac{1}{4\pi\varepsilon_0} \frac{(R+2r)Q}{2(R^2+r^2)}$, $\frac{1}{4\pi\varepsilon_0} \frac{(R+r)Q}{(R^2+r^2)}$... 3 Edit Delete
20120 $A \ 5 \, \mu\text{F} \text{ capacitor is charged fully by a } 220 \, \text{V} \text{ supply. It is then disconnected from the supply and is connected in series to another uncharged } 2.5 \, \mu\text{F} \text{ capacitor. If the energy change during the charge redistribution is } \frac{X}{100} \, \text{J} \text{ then value of } X \text{ to the nearest integer is:}$ 1 117 JEE MCQ NEW $10$, $20$... 3 Edit Delete
20119 $\text{A parallel plate capacitor is made of two square plates of side } 'a',$ $\text{ separated by a distance } d (d << a).$ $\text{The lower triangular portion is}$ $\text{filled with a dielectric of dielectric constant } K, \text{ as shown in the}$ $\text{figure. The capacitance of this capacitor is:}$ 1 117 JEE MCQ NEW $\frac{K \varepsilon_0 a^2}{2d(K + 1)}$, $\frac{K \varepsilon_0 a^2}{d(K - 1)} \ln K$... 2 Edit Delete
20118 $\text{In the given circuit, the charge on } 4 \, \mu\text{F capacitor will be:}$ 1 117 JEE MCQ NEW $5.4 \, \mu\text{C}$, $9.6 \, \mu\text{C}$... 4 Edit Delete
20117 $\text{A point dipole with dipole moment } \vec{p} = -p_0 \hat{i} \text{ is placed at the origin.}$ $\text{What are the electric potential and electric field due to this dipole at a point located on the } y\text{-axis at a distance } d \text{ from the origin? (assume } V = 0 \text{ at infinity)}$ 1 117 JEE MCQ NEW $\frac{|\vec{p}|}{4\pi\varepsilon_0 d^2}, \frac{-\vec{p}}{4\pi\varepsilon_0 d^3}$, $0, \frac{-\vec{p}}{4\pi\varepsilon_0 d^3}$... 2 Edit Delete
20116 $\text{Two identical parallel plate capacitors, of capacitance } C \text{ each, have plates of area } A, \text{ separated by a distance } d. \text{ The space between the plates of the two capacitors is filled with three dielectrics, of equal thickness and dielectric constants } K_1, K_2 \text{ and } K_3. \text{ The first capacitor is filled as shown in Fig I, and the second one is filled as shown in Fig II.}$ $\text{If these two modified capacitors are charged by the same potential } V, \text{ the ratio of the energy stored in the two, would be (} E_1 \text{ refers to capacitor (I) and } E_2 \text{ to capacitor (II)):}$ 1 117 JEE MCQ NEW $\frac{E_1}{E_2} = \frac{(K_1 + K_2 + K_3)(K_3 K_1 + K_2 K_3 + K_2 K_1)}{K_1 K_2 K_3}$, $\frac{E_1}{E_2} = \frac{K_1 K_2 K_3}{(K_1 + K_2 + K_3)(K_3 K_1 + K_2 K_3 + K_2 K_1)}$... 4 Edit Delete
20115 $\text{In free space, a particle } A \text{ of charge } 1 \, \mu\text{C} \text{ is held fixed at a point } P. \text{ Another particle } B \text{ of the same charge and mass } 4 \, \mu\text{g} \text{ is kept at a distance of } 1 \, \text{mm from } P. \text{ If } B \text{ is released, then its velocity at a distance of } 9 \, \text{mm from } P \text{ is:}$ $\left[ \text{Take } \frac{1}{4\pi\varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2\text{C}^{-2} \right]$ 1 117 JEE MCQ NEW $1.0 \, \text{m/s}$, $3.0 \times 10^4 \, \text{m/s}$... 4 Edit Delete
20114 $\text{A uniformly charged ring of radius } 3a \text{ and total charge } q \text{ is placed in } xy\text{-plane centered at the origin.}$ $\text{A point charge } q \text{ is moving towards the ring along the } z\text{-axis and has speed } v \text{ at } z = 4a. \text{ The minimum value of } v \text{ such that it crosses the origin is:}$ 1 117 JEE MCQ NEW $\sqrt{\frac{2}{m} \left( \frac{1}{5} \frac{q^2}{4 \pi \varepsilon_0 a} \right)^{1/2}}$, $\sqrt{\frac{2}{m} \left( \frac{1}{15} \frac{q^2}{4 \pi \varepsilon_0 a} \right)^{1/2}}$... 3 Edit Delete
20113 $\text{The figure shows the charge } (q) \text{ versus voltage } (V) \text{ graphs corresponding to two different combinations of the same pair of capacitors:}$ $1. \text{ In parallel: } A$ $2. \text{ In series: } B$ $\text{Based on the graphs (for } A \text{ and } B\text{), what are the capacitances of the two capacitors?}$ 1 117 JEE MCQ NEW $50 \ \mu\text{F} \text{ and } 30 \ \mu\text{F}$, $40 \ \mu\text{F} \text{ and } 10 \ \mu\text{F}$... 2 Edit Delete
20112 $\text{The parallel combination of two air filled parallel plate capacitors of capacitance } C \text{ and } nC \text{ is connected to a battery of voltage, } V. \text{ When the capacitors are fully charged, the battery is removed and after that a dielectric material of dielectric constant } K \text{ is placed between the two plates of the first capacitors. The new potential difference of the combined system is:}$ 1 117 JEE MCQ NEW $\frac{V}{K+n}$, $\frac{nV}{K+n}$... 3 Edit Delete
20111 $\text{A system of three charges are placed as shown in the figure:}$ $\text{If } D \gg d, \text{ the potential energy of the system is best given by:}$ 1 117 JEE MCQ NEW $\frac{1}{4\pi\varepsilon_0} \left[ \frac{q^2}{d} + \frac{qQd}{D^2} \right]$, $\frac{1}{4\pi\varepsilon_0} \left[ -\frac{q^2}{d} + \frac{qQd}{D^2} \right]$... 4 Edit Delete
20110 $\text{A positive point charge is released from rest at a distance } r_0 \text{ from a position line charge with uniform density.}$ $\text{The speed } (v) \text{ of the point charge, as a function of instantaneous distance } r \text{ from line charge, is proportional to:}$ 1 117 JEE MCQ NEW $v \propto e^{+r/r_0}$, $v \propto \ln\left(\frac{r}{r_0}\right)$... 4 Edit Delete
20109 $\text{A solid conducting sphere, having a charge } Q, \text{ is surrounded by an uncharged conducting hollow spherical shell.}$ $\text{Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be } V.$ $\text{If the shell is now given a charge of } -4Q, \text{ the new potential difference between the same two surfaces is:}$ 1 117 JEE MCQ NEW $-2V$, $2V$... 3 Edit Delete
20108 $\text{A parallel plate capacitor of capacitance } 90 \text{ pF is connected to a battery of emf } 20 \text{ V.}$ $\text{If a dielectric material of dielectric constant } K = \frac{5}{3} \text{ is inserted between the plates,}$ $\text{the magnitude of the induced charge will be:}$ 1 117 JEE MCQ NEW $1.2 \text{ nC}$, $0.3 \text{ nC}$... 1 Edit Delete
20107 $\text{Three concentric metal shells } A, B \text{ and } C \text{ of respective radii } a, b \text{ and } c \,(a < b < c) \text{ have surface charge densities } +\sigma, -\sigma \text{ and } +\sigma \text{ respectively. The potential of the shell } B \text{ is:}$ 1 117 JEE MCQ NEW $\frac{\sigma}{\varepsilon_0} \left[ \frac{a^2 - b^2}{a} + c \right]$, $\frac{\sigma}{\varepsilon_0} \left[ \frac{a^2 - b^2}{b} + c \right]$... 2 Edit Delete
20106 $\text{A capacitance of } 2 \, \mu F \text{ is required in an electrical circuit across a potential difference of } 1.0 \, kV. \text{ A large number of } 1 \, \mu F \text{ capacitors are available which can withstand a potential difference of not more than } 300 \, V. \text{ The minimum number of capacitors required to achieve this is:}$ $1. \text{ 2}$ $2. \text{ 16}$ $3. \text{ 24}$ $4. \text{ 32}$ 1 117 JEE MCQ NEW $2$, $16$... 4 Edit Delete
20105 $\text{A combination of capacitors is set up as shown in the figure. The magnitude of the electric field, due to a point charge } Q \text{ (having a charge equal to the sum of the charges on the } 4 \, \mu\text{F and } 9 \, \mu\text{F capacitors), at a point distant } 30 \, \text{m from it, would equal:}$ 1 117 JEE MCQ NEW $240 \, \text{N/C}$, $360 \, \text{N/C}$... 3 Edit Delete
20104 $\text{The figure shows two point charges } +Q \text{ and } -Q \text{ inside the cavity of a spherical shell. The charges are kept near the surface of the cavity on opposite sides of the centre of the shell. If } \sigma_1 \text{ is the surface charge on the inner surface and } Q_1 \text{ net charge on it and } \sigma_2 \text{ the surface charge on the outer surface and } Q_2 \text{ net charge on it then:}$ 1 117 JEE MCQ NEW $\sigma_1 \neq 0, Q_1 = 0, \text{ and } \sigma_2 \neq 0, Q_2 = 0$, $\sigma_1 = 0, Q_1 = 0, \text{ and } \sigma_2 = 0, Q_2 = 0$... 2 Edit Delete
20103 $\text{In the given circuit, charge } Q_2 \text{ on the } 2 \, \mu\text{F capacitor changes as } C \text{ is varied from } 1 \, \mu\text{F to } 3 \, \mu\text{F.}$ $Q_2 \text{ as a function of } C \text{ is given properly by: (figures are drawn schematically and are not to scale)}$ 1 117 JEE MCQ NEW $Q_2 \text{ vs } C \text{ graph with increasing slope}$, $Q_2 \text{ vs } C \text{ graph with constant slope}$... 2 Edit Delete
20102 $\text{A uniformly charged solid sphere of radius } R \text{ has potential } V_0$ $\text{(measured with respect to } \infty) \text{ on its surface. For this sphere, the}$ $\text{equipotential surfaces with potentials } \frac{3V_0}{2}, \frac{5V_0}{4}, \frac{3V_0}{4} \text{ and } \frac{V_0}{4} \text{ have}$ $\text{radius } R_1, R_2, R_3 \text{ and } R_4 \text{ respectively. Then:}$ 1 117 JEE MCQ NEW $R_1 = 0 \text{ and } R_2 > (R_4 - R_3)$, $R_1 \neq 0 \text{ and } (R_2 - R_1) > (R_4 - R_3)$... 3 Edit Delete
20101 $\text{A parallel plate capacitor is made of two circular plates separated by a distance of } 5 \text{ mm and with a dielectric of dielectric constant } 2.2 \text{ between them.}$ $\text{When the electric field in the dielectric is } 3 \times 10^4 \text{ V/m, the charge density of the positive plate will be close to:}$ 1 117 JEE MCQ NEW $3 \times 10^{-7} \text{ C/m}^2$, $3 \times 10^4 \text{ C/m}^2$... 4 Edit Delete
20100 $\text{An electric field } \vec{E} = (2x\hat{i}) \text{ NC}^{-1} \text{ exists in space. A cube of side } 2 \text{ m is placed in the space as per figure given below. The electric flux through the cube is:}$ 1 116 JEE MCQ NEW $0 \text{ Nm}^2/\text{C}$, $4 \text{ Nm}^2/\text{C}$... 4 Edit Delete
20099 $\text{Five charges } +q, +5q, -2q, +3q \text{ and } -4q \text{ are situated as shown in the figure.}$ $\text{The electric flux due to this configuration through the surface } S \text{ is}$ 1 116 JEE MCQ NEW $\frac{4q}{\varepsilon_0}$, $\frac{q}{\varepsilon_0}$... 1 Edit Delete
20098 $\text{Two identical conducting spheres } P \text{ and } S \text{ with charge } Q \text{ on each, repel each other with a force } 16 \text{ N.}$ $\text{A third identical uncharged conducting sphere } R \text{ is successively brought in contact with the two spheres.}$ $\text{The new force of repulsion between } P \text{ and } S \text{ is:}$ 1 116 JEE MCQ NEW $4 \text{ N}$, $1 \text{ N}$... 1 Edit Delete
20097 $\sigma$ \text{ is the uniform surface charge density of a thin spherical shell of radius } R. \text{ The electric field at any point on the surface of the spherical shell is:} 1 116 JEE MCQ NEW $\frac{\sigma}{\varepsilon_0} R$, $\frac{\sigma}{\varepsilon_0}$... 2 Edit Delete
20096 $\text{A charge } q \text{ is placed at the center of one of the surface of a cube. The flux linked with the cube is:}$ 1 116 JEE MCQ NEW $\frac{q}{4\varepsilon_0}$, $\frac{q}{2\varepsilon_0}$... 2 Edit Delete
20095 $\text{The electric field due to the electric dipole on the axial position at distance } r \text{ from the dipole is proportional to:}$ $\text{(assume } r \gg \text{ length of the dipole)}$ 1 116 JEE MCQ NEW $\frac{1}{r}$, $\frac{1}{r^3}$... 2 Edit Delete
20094 $\text{The electric field in a region is given by } \vec{E} = (6\hat{i} + 7\hat{j} + 8\hat{k}) \text{ (in V/m). An area of } 30 \text{ m}^2 \text{ is considered in the } y-z \text{ plane. Then the electric flux through this area (in V} \cdot \text{m) is:}$ $1.\ 180$ $2.\ 150$ $3.\ 170$ $4.\ 130$ 1 116 JEE MCQ NEW $180$, $150$... 1 Edit Delete
20093 $\text{The electric field due to a dipole at a point on its equatorial plane varies as } r^{-n}. \text{ The value of } n \text{ is:}$ 1 116 JEE MCQ NEW $0$, $2$... 4 Edit Delete
20092 $\text{A charge of } 10 \, \mu\text{C is split into two equal parts, and the resulting charges are placed } 1 \, \text{cm apart. What will be the force of repulsion between the two charges?}$ 1 116 JEE MCQ NEW $225 \, \text{N}$, $450 \, \text{N}$... 3 Edit Delete
20091 $\text{An electric dipole with a dipole moment of } 5 \, \mu\text{C-m is placed in a uniform electric field of } 600 \, \text{N/C, at an angle of } 90^\circ \text{ to the direction of the field. The torque experienced by the dipole, (in milli-Newton-meters) is equal to:}$ 1 116 JEE MCQ NEW $3$, $0$... 1 Edit Delete
20090 $\text{The electric field in a region is given by } \vec{E} = \frac{a}{x^2} \hat{i} + \frac{b}{y^3} \hat{j}, \text{ where } x \text{ and } y \text{ are coordinates of a point. The SI units of } a \text{ and } b \text{ are respectively:}$ 1 116 JEE MCQ NEW $\text{Nm}^2\text{C}^{-1}, \text{Nm}^3\text{C}^{-1}$, $\text{Nm}^3\text{C}^{-1}, \text{Nm}^2\text{C}^{-1}$... 1 Edit Delete
20089 $\text{A spherically symmetric charge distribution is considered with charge density varying as}$ $\rho(r) = \begin{cases} \rho_0 \left( \frac{3}{4} - \frac{r}{R} \right) & \text{for } r \leq R \\ \text{Zero} & \text{for } r > R \end{cases}$ $\text{where } r(r < R) \text{ is the distance from the centre } O \text{ (as shown in the figure). The electric field at point } P \text{ will be:}$ 1 116 JEE MCQ NEW $\frac{\rho_0 r}{4 \varepsilon_0} \left( \frac{3}{4} - \frac{r}{R} \right)$, $\frac{\rho_0 r}{3 \varepsilon_0} \left( \frac{3}{4} - \frac{r}{R} \right)$... 3 Edit Delete
20088 $\text{A charge of } 4 \, \mu\text{C is to be divided into two. The distance between the two divided charges is constant. The magnitude of the divided charges so that the force between them is maximum will be:}$ $1. \, 1 \, \mu\text{C and } 3 \, \mu\text{C}$ $2. \, 2 \, \mu\text{C and } 2 \, \mu\text{C}$ $3. \, 0 \, \mu\text{C and } 4 \, \mu\text{C}$ $4. \, 1.5 \, \mu\text{C and } 2.5 \, \mu\text{C}$ 1 116 JEE MCQ NEW $1 \, \mu\text{C and } 3 \, \mu\text{C}$, $2 \, \mu\text{C and } 2 \, \mu\text{C}$... 2 Edit Delete
20087 $\text{Three-point charges of magnitude } 5 \, \mu\text{C}, \, 0.16 \, \mu\text{C} \text{ and } 0.3 \, \mu\text{C} \text{ are located at the vertices } A, B, C \text{ of a right-angled triangle whose sides are } AB = 3 \, \text{cm}, \, BC = 3\sqrt{2} \, \text{cm} \text{ and } CA = 3 \, \text{cm} \text{ and point } A \text{ is the right-angle corner. Charge at point } A \text{ experiences an electrostatic force due to the other two charges equal to:}$ 1 116 JEE MCQ NEW $11 \, \text{N}$, $17 \, \text{N}$... 2 Edit Delete
20086 $\text{The volume charge density of a sphere of radius } 6 \text{ m is } 2 \, \mu\text{C-cm}^{-3}.$ $\text{The number of lines of force per unit surface area coming out from the surface of the sphere is:}$ $\left[ \text{Given: Permittivity of vacuum, } \varepsilon_0 = 8.85 \times 10^{-12} \frac{\text{C}^2}{\text{N-m}^2} \right]$ 1 116 JEE MCQ NEW $15 \times 10^{10} \, \text{NC}^{-1}$, $30 \times 10^{10} \, \text{NC}^{-1}$... 3 Edit Delete
20085 $\text{A positive charge particle of } 100 \text{ mg is thrown in opposite direction to a uniform electric field of strength } 1 \times 10^5 \text{ NC}^{-1}. \text{ If the charge on the particle is } 40 \ \mu\text{C and the initial velocity is } 200 \ \text{ms}^{-1}, \text{ how much distance it will travel before coming to the rest momentarily:}$ 1 116 JEE MCQ NEW $1 \ \text{m}$, $5 \ \text{m}$... 4 Edit Delete
20084 $\text{Two point charges } A \text{ and } B \text{ of magnitude } +8 \times 10^{-6} \text{ C and } -8 \times 10^{-6} \text{ C respectively are placed at a distance } d \text{ apart.}$ $\text{The electric field at the middle point } O \text{ between the charges is } 6.4 \times 10^{-4} \text{ NC}^{-1}. \text{ The distance } d \text{ between the point charges } A \text{ and } B \text{ is:}$ 1 116 JEE MCQ NEW $2.0 \text{ m}$, $3.0 \text{ m}$... 2 Edit Delete
20083 $\text{Three identical charged balls each of charge } 2C \text{ are suspended from a common point } P \text{ by silk threads of } 2 \text{ m each (as shown in the figure). They form an equilateral triangle of side } 1 \text{ m. The ratio of the net force on a charged ball to the force between any two charged balls will be:}$ 1 116 JEE MCQ NEW $1 : 1$, $1 : 4$... 4 Edit Delete
20082 $\text{A point charge } q \text{ is placed at the centre of a closed non-conducting}$ $\text{hemispherical surface made of a curved hemisphere and a flat}$ $\text{circular base. The total electric flux passing through the flat base is:}$ 1 116 JEE MCQ NEW $\frac{q}{\varepsilon_0}$, $\frac{q}{2\varepsilon_0}$... 2 Edit Delete
20081 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):}$ $\text{Assertion (A): Non-polar materials do not have any permanent dipole moment.}$ $\text{Reason (R): When a non-polar material is placed in an electric field, the centre of the positive charge distribution of its individual atom or molecule coincides with the centre of the negative charge distribution.}$ $\text{In the light of the above statements choose the correct answer from the options given below:}$ 1 116 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
20080 $\text{In the figure, a very large plane sheet of positive charge is shown.}$ $P_1 \text{ and } P_2 \text{ are two points at distance } l \text{ and } 2l \text{ from the charge distribution.}$ $\text{If } \sigma \text{ is the surface charge density, then the magnitude of electric fields } E_1 \text{ and } E_2 \text{ at } P_1 \text{ and } P_2 \text{ respectively are:}$ 1 116 JEE MCQ NEW $E_1 = \frac{\sigma}{\varepsilon_0}, E_2 = \frac{\sigma}{2\varepsilon_0}$, $E_1 = \frac{2\sigma}{\varepsilon_0}, E_2 = \frac{\sigma}{\varepsilon_0}$... 3 Edit Delete
20079 $\text{A long cylindrical volume contains a uniformly distributed charge of density } \rho. \text{ The radius of cylindrical volume is } R. \text{ A charged particle } (q) \text{ revolves around the cylindrical path. The kinetic energy of the particle is:}$ 1 116 JEE MCQ NEW $\frac{\rho q R^2}{4 \varepsilon_0}$, $\frac{\rho q R^2}{2 \varepsilon_0}$... 1 Edit Delete
20078 $\text{Two identical charged particles, each having a mass } 10 \text{ g and charge } 2.0 \times 10^{-7} \text{ C, are placed on a horizontal table with a separation of } L \text{ between them such that they stay in limited equilibrium. If the coefficient of friction between each particle and the table is } 0.25, \text{ the value of } L \text{ is: [Use } g = 10 \text{ ms}^{-2}]$ 1 116 JEE MCQ NEW $12 \text{ cm}$, $10 \text{ cm}$... 1 Edit Delete
20077 $\text{A vertical electric field of magnitude } 4.9 \times 10^5 \text{ N/C just prevents a water droplet of a mass of } 0.1 \text{ g from falling. The value of charge on the droplet will be: (Given } g = 9.8 \text{ m/s}^2)$ 1 116 JEE MCQ NEW $1.6 \times 10^{-9} \text{ C}$, $2.0 \times 10^{-9} \text{ C}$... 2 Edit Delete
20076 $\text{Two point charges } q_1(\sqrt{10} \ \mu\text{C}) \text{ and } q_2(-25 \ \mu\text{C}) \text{ are placed on the } x\text{-axis at } x = 1 \ \text{m and } x = 4 \ \text{m respectively.}$ $\text{The electric field (in V/m) at a point } y = 3 \ \text{m on the } y\text{-axis is:}$ $\left(\text{take } \frac{1}{4\pi\varepsilon_0} = 9 \times 10^9 \ \text{Nm}^2\text{C}^{-2}\right)$ 1 116 JEE MCQ NEW $(63\hat{i} - 27\hat{j}) \times 10^2$, $(-63\hat{i} + 27\hat{j}) \times 10^2$... 1 Edit Delete
20075 $\text{Three charges } +Q, q, +Q \text{ are placed respectively, at a distance, } 0, \frac{d}{2} \text{ and } d \text{ from the origin, on the } x\text{-axis. If the net force experienced by } +Q, \text{ placed at } x = 0, \text{ is zero, then the value of } q \text{ is:}$ 1 116 JEE MCQ NEW $-\frac{Q}{4}$, $+\frac{Q}{2}$... 1 Edit Delete
20074 $\text{For a uniformly charged ring of the radius } R, \text{ the electric field on its axis has the largest magnitude at a distance } h \text{ from its centre. Then the value of } h \text{ is:}$ 1 116 JEE MCQ NEW $\frac{R}{\sqrt{5}}$, $\frac{R}{\sqrt{2}}$... 2 Edit Delete
20073 $\text{Four point charges } -q, +q, +q \text{ and } -q \text{ are placed on } y\text{-axis at } y = -2d, y = -d, y = +d, y = +2d, \text{ respectively. The magnitude of the electric field } E \text{ at a point a the } x\text{-axis at } x = D, \text{ with } D >> d, \text{ will behave as:}$ $1. \ E \propto \frac{1}{D}$ $2. \ E \propto \frac{1}{D^3}$ $3. \ E \propto \frac{1}{D^4}$ $4. \ E \propto \frac{1}{D^2}$ 1 116 JEE MCQ NEW $E \propto \frac{1}{D}$, $E \propto \frac{1}{D^3}$... 3 Edit Delete
20072 $\text{A electric dipole is formed by two equal and opposite charges } q \text{ with separation } d. \text{ The charges have same mass } m. \text{ It is kept in a uniform electric field } E. \text{ If it is slightly rotated from its equilibrium orientation, then its angular frequency } \omega \text{ is:}$ 1 116 JEE MCQ NEW $\sqrt{\frac{qE}{2md}}$, $\sqrt{\frac{2qE}{md}}$... 2 Edit Delete
20071 $\text{The bob of a simple pendulum has mass } 2 \text{ g and a charge of } 5.0 \, \mu\text{C.}$ $\text{It is at rest in a uniform horizontal electric field of intensity } 2000 \, \text{V/m.}$ $\text{At equilibrium, the angle that the pendulum makes with the vertical is: (take } g = 10 \, \text{m/s}^2)$ 1 116 JEE MCQ NEW $\tan^{-1}(5.0)$, $\tan^{-1}(0.5)$... 2 Edit Delete
20070 $\text{Two identical conducting spheres } A \text{ and } B \text{ carry an equal charge.}$ $\text{They are separated by a distance much larger than their diameters}$ $\text{and the force between them is } F. \text{ A third identical conducting sphere } C \text{ is uncharged.}$ $\text{The sphere } C \text{ is first touched to } A \text{ then to } B \text{ and then removed.}$ $\text{As a result, the force between } A \text{ and } B \text{ would be equal to:}$ 1 116 JEE MCQ NEW $\frac{3F}{4}$, $\frac{F}{2}$... 3 Edit Delete
20069 $\text{The mass density of a spherical body is given by } \rho(r) = \frac{K}{r} \text{ for } r \leq R \text{ and } \rho(r) = 0 \text{ for } r \leq R, \text{ where } r \text{ is the distance from the centre.}$ $\text{The correct graph that describes qualitatively the acceleration } a \text{ of a test particle as a function of } r \text{ is:}$ 1 116 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
20068 $\text{Four closed surfaces and corresponding charge distributions are shown below.}$ $\text{Let the respective electric fluxes through the surfaces be } \phi_1, \phi_2, \phi_3 \text{ and } \phi_4. \text{ Then:}$ 1 116 JEE MCQ NEW $\phi_1 = \phi_2 = \phi_3 = \phi_4$, $\phi_1 > \phi_3; \phi_2 < \phi_4$... 1 Edit Delete
20067 $\text{A wire, of length } (L = 20 \text{ cm}), \text{ is bent into a semicircular arc. If the two equal halves, of the area, were each to be uniformly charged with charges } \pm Q, \ |Q| = 10^3 \varepsilon_0 \ C, \text{ where } \varepsilon_0 \text{ is the permittivity (in S.I units) of free space} \text{ the net electric field at the centre } O \text{ of the semicircular area would be:}$ 1 116 JEE MCQ NEW $(50 \times 10^3 \ \text{N/C}) \ \hat{j}$, $(50 \times 10^3 \ \text{N/C}) \ \hat{i}$... 4 Edit Delete
20066 $\text{A thin disc of radius } b = 2a \text{ has a concentric hole of radius } a' \text{ in it (see figure). It carries a uniform surface charge } \sigma' \text{ on it. If the electric field on its axis at height } h (h \ll a) \text{ from its centre is given as:}$ 1 116 JEE MCQ NEW $\frac{\sigma h}{2a \epsilon_0}$, $\frac{\sigma h}{4a \epsilon_0}$... 2 Edit Delete
20065 $\text{A solid sphere has a radius of } 4a \text{ and is centered at the origin. Two charges are positioned: one with a charge of } -2q \text{ at the coordinates } (-5a, 0) \text{ and } 5q \text{ at } (3a, 0). \text{ The electric flux through the sphere is given by } \frac{xq}{\varepsilon_0}. \text{ Then the value of } x.$ 1 116 JEE MCQ NEW $5$, $4$... 1 Edit Delete
20064 $\text{An electron is moving with the speed } 1 \text{ m/s at a distance } 1 \text{ m from a large sheet of charge with density } \sigma \text{ C/m}^2. \text{ Then the maximum value of } \sigma \text{ such that the electron hit the sheet after } 1 \text{ sec is:}$ $\text{(mass of electron } 9 \times 10^{-31} \text{ kg, permittivity of free space } \varepsilon_0 = 9 \times 10^{-12} \text{ C}^2/\text{Nm}^2)$ 1 116 JEE MCQ NEW $4.05 \times 10^{-22} \text{ C/m}^2$, $8.10 \times 10^{-22} \text{ C/m}^2$... 1 Edit Delete
20063 $\text{A ring has a uniformly distributed charge of } 2\pi \text{ C and radius of } 3 \text{ cm.}$ $\text{A charge of } 10^{-6} \text{ C is placed at the centre of the ring.}$ $\text{Then the tension developed in the ring is:}$ 1 116 JEE MCQ NEW $10^{13} \text{ N}$, $10^{5} \text{ N}$... 3 Edit Delete
20062 $\text{A dipole, with a charge of magnitude } 0.01 \text{ C and a separation distance of } 0.4 \text{ mm, is positioned within an electric field that has a strength of } 10 \text{ dyne/C. The maximum torque exerted on the dipole in this field is:}$ 1 116 JEE MCQ NEW $4 \times 10^{-9} \text{ N-m}$, $2 \times 10^{-10} \text{ N-m}$... 3 Edit Delete
20061 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{When an electric dipole is completely enclosed by a closed Gaussian surface, the total electric flux through the surface is zero.}$ $\text{Reason (R):}$ \text{The net charge enclosed within the surface is zero.}$ 1 116 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
20060 $\text{A fixed charge } P \text{ and a free charge } Q, \text{ both having the same charge and mass, are positioned as shown in the diagram.}$ $\text{Given that } q = 2 \mu C, \theta = 30^\circ, \text{ and } m = 20 \text{ g, what is the maximum height } h$ $\text{attained by the charge } Q \text{ in equilibrium on the smooth inclined plane?}$ 1 116 JEE MCQ NEW $0.1 \text{ m}$, $0.3 \text{ m}$... 2 Edit Delete
20059 $\text{An infinite line charge density } \lambda \text{ has a charged particle } (-q, m) \text{ revolving about it in a circle of radius } r. \text{ Find the orbital speed}$ 1 116 JEE MCQ NEW $\sqrt{\frac{\lambda a}{\pi \varepsilon_0 m}}$, $\sqrt{\frac{\lambda q}{4 \pi \varepsilon_0 m}}$... 4 Edit Delete
20058 41 1 116 JEE MCQ NEW 1, 2... 1 Edit Delete
20057 $\text{An electric dipole is shown in the figure. If it is displaced by a small angle with respect to the electric field, the angular frequency of its oscillation is given by:}$ 1 116 JEE MCQ NEW $\sqrt{\frac{6qE}{ml}}$, $\sqrt{\frac{3qE}{ml}}$... 2 Edit Delete
20056 $x = 2.$ $\text{Two-point charges each of magnitude } q \text{ is kept at a separation of } 2a.$ $\text{The distance from mid-point on perpendicular bisector where a point charge will experience maximum force is } \frac{a}{\sqrt{x}}.$ $\text{Then } x =$ 1 116 JEE MCQ NEW 3, 2... 2 Edit Delete
20055 $\text{Two thin insulating sheets (each having charge density } +\sigma\text{) are arranged as shown. The net electric field magnitude in the three regions will be respectively:}$ 1 116 JEE MCQ NEW $E_1 = \frac{\sigma}{\varepsilon_0}; \ E_2 = 0; \ E_3 = \frac{\sigma}{\varepsilon_0}$, $E_1 = E_2 = E_3 = 0$... 1 Edit Delete
20054 $\text{The electric field in a region is given by } 4000x^2 \hat{i} \text{ N/C. The electric flux through the cube (given below) would be:}$ 1 116 JEE MCQ NEW $6.4 \text{ N-m}^2/\text{C}$, $3.2 \text{ N-m}^2/\text{C}$... 1 Edit Delete
20053 $\text{The electric field in a region is } \vec{E} = 2x^2 \hat{i} - 4y \hat{j} + 6z \hat{k}. \text{ What is the charge inside the cuboid shown below?}$ 1 116 JEE MCQ NEW $-8\varepsilon_0$, $36\varepsilon_0$... 4 Edit Delete
20052 $\text{A point charge } Q \text{ is placed inside the cavity made of a uniform conducting solid sphere as shown. } E_A, E_B \text{ and } E_C \text{ are electric field magnitudes at points } A, B, \text{ and } C \text{ respectively. Then:}$ 1 116 JEE MCQ NEW $E_A = 0, E_B = 0 \text{ and } E_C \neq 0$, $E_A \neq 0, E_B = 0 \text{ and } E_C \neq 0$... 2 Edit Delete
20051 $\text{A point charge } Q \text{ is placed inside the cavity made of a uniform conducting solid sphere as shown. } E_A, E_B \text{ and } E_C \text{ are electric field magnitudes at points } A, B, \text{ and } C \text{ respectively. Then:}$ 1 116 JEE MCQ NEW $E_A = 0, E_B = 0 \text{ and } E_C \neq 0$, $E_A \neq 0, E_B = 0 \text{ and } E_C \neq 0$... 2 Edit Delete
20050 33 1 116 JEE MCQ NEW 1, 2... 1 Edit Delete
20049 $\text{A charge } q \text{ is placed at the centre of the bottom face of a cuboid, as shown in the diagram.}$ $\text{What is the electric flux through the shaded surface?}$ 1 116 JEE MCQ NEW $\frac{2q}{7\varepsilon_0}$, $\frac{q}{12\varepsilon_0}$... 4 Edit Delete
20048 $\text{A charge of } 10 \, \mu\text{C is placed at the origin. Where should a charge of } 40 \, \mu\text{C be placed on the } x\text{-axis so that the electric field at } x = 2 \text{ units is zero?}$ 1 116 JEE MCQ NEW $-2 \text{ units}$, $4 \text{ units}$... 3 Edit Delete
20047 $\text{Two charges, } q_1 \text{ and } q_2, \text{ separated by a distance } d, \text{ are placed in a medium with a dielectric constant } K. \text{ If these charges are placed in the air, the equivalent separation at which they experience the same force is:}$ 1 116 JEE MCQ NEW $d\sqrt{K}$, $\frac{K}{\sqrt{d}}$... 1 Edit Delete
20046 $\text{Two identical metallic spheres } A \text{ and } B \text{ when placed at a certain distance in the air repel each other with a force } F. \text{ Another identical uncharged sphere } C \text{ is first placed in contact with } A \text{ and then in contact with } B \text{ and finally placed at the midpoint between spheres } A \text{ and } B. \text{ The force experienced by sphere } C \text{ will be:}$ 1 116 JEE MCQ NEW $\frac{3F}{2}$, $\frac{3F}{4}$... 2 Edit Delete
20045 $\text{Two electric dipoles of dipole moments } 1.2 \times 10^{-30} \text{ C-m and } 2.4 \times 10^{-30} \text{ C-m are placed in two different uniform electric fields of strengths } 5 \times 10^4 \text{ NC}^{-1} \text{ and } 15 \times 10^4 \text{ NC}^{-1} \text{ respectively. The ratio of maximum torque experienced by the electric dipoles is } \frac{1}{x}. \text{ The value of } x \text{ is:}$ 1 116 JEE MCQ NEW $2$, $4$... 3 Edit Delete
20044 $\text{A long cylindrical volume contains a uniformly distributed charge of density } \rho \text{ cm}^{-3}. \text{ The electric field inside the cylindrical volume at a distance } x = \frac{2\varepsilon_0}{\rho} \text{ m from its axis is:}$ 1 116 JEE MCQ NEW $1 \text{ Vm}^{-1}$, $2 \text{ Vm}^{-1}$... 1 Edit Delete
20043 $\text{Two point charges, } Q \text{ each, are placed at a distance } d \text{ apart.}$ $\text{A third point charge } q \text{ is placed at a distance } x \text{ from the mid-point on the perpendicular bisector.}$ $\text{The value of } x \text{ at which charge } q \text{ will experience the maximum Coulomb's force is:}$ 1 116 JEE MCQ NEW $x = d$, $x = \frac{d}{2}$... 4 Edit Delete
20042 $\text{The three charges } \frac{q}{2}, q \text{ and } \frac{q}{2} \text{ are placed at the corners } A, B \text{ and } C$ $\text{of a square of side } a \text{ as shown in the figure. The magnitude of the}$ $\text{electric field } (E) \text{ at the corner } D \text{ of the square is:}$ 1 116 JEE MCQ NEW $\frac{q}{4\pi\varepsilon_0 a^2} \left( \frac{1}{\sqrt{2}} + \frac{1}{2} \right)$, $\frac{q}{4\pi\varepsilon_0 a^2} \left( 1 + \frac{1}{\sqrt{2}} \right)$... 1 Edit Delete
20041 $\text{Consider the following statements:}$ $\text{Statement I: A point charge is brought in an electric field. The value of the electric field at a point near the charge may increase if the charge is positive.}$ $\text{Statement II: An electric dipole is placed in a non-uniform electric field. The net electric force on the dipole will not be zero.}$ 1 116 JEE MCQ NEW $\text{Both Statement I and Statement II are True.}$, $\text{Both Statement I and Statement II are False.}$... 1 Edit Delete
20040 $\text{An inclined plane making an angle of } 30^\circ \text{ with the horizontal is placed in a uniform horizontal electric field } 200 \text{ N/C as shown in the figure.}$ $\text{A body of mass } 1 \text{ kg and charge } 5 \text{ mC is allowed to slide down from rest at a height of } 1 \text{ m.}$ $\text{If the coefficient of friction is } 0.2, \text{ find the time taken by the body to reach the bottom.}$ $[g = 9.8 \text{ m/s}^2, \sin 30^\circ = \frac{1}{2}; \cos 30^\circ = \frac{\sqrt{3}}{2}]$ 1 116 JEE MCQ NEW $0.92 \text{ s}$, $0.46 \text{ s}$... 4 Edit Delete
20039 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{An electric dipole is placed at the centre of a hollow sphere. The flux of the electric field through the sphere is zero but the electric field is not zero anywhere in the sphere.}$ $\text{Statement II:}$ \text{If } R \text{ is the radius of a solid metallic sphere and } Q \text{ be the total charge on it. The electric field at any point on the spherical surface of radius } r \ (< R) \text{ is zero but the electric flux passing through this closed spherical surface of radius } r \text{ is not zero.}$ 1 116 JEE MCQ NEW $\text{Both Statement I and Statement II are true}$, $\text{Statement I is true but Statement II is false}$... 2 Edit Delete
20038 $\text{Find the electric field at point } P \text{ (as shown in the figure) on the perpendicular bisector of a uniformly charged thin wire of length } L \text{ carrying a charge } Q. \text{ The distance of point } P \text{ from the centre of the rod is } a = \frac{\sqrt{3}}{2}L.$ 1 116 JEE MCQ NEW $\frac{\sqrt{3}Q}{4\pi \varepsilon_0 L^2}$, $\frac{Q}{3\pi \varepsilon_0 L^2}$... 3 Edit Delete
20037 $\text{Two identical conducting spheres, each with negligible volume, carry initial charges of } 2.1 \text{ nC and } -0.1 \text{ nC, \ respectively.}$ $\text{The spheres are brought into contact, allowing charge to redistribute, and are then separated by a distance of } 0.5 \text{ m.}$ $\text{The electrostatic force acting between the spheres is:}$ $\left( 4\pi\varepsilon_0 = \frac{1}{9 \times 10^9} \text{ in SI units} \right)$ 1 116 JEE MCQ NEW $36 \times 10^{-7} \text{ N}$, $36 \times 10^{-9} \text{ N}$... 2 Edit Delete
20036 $\text{Two small spheres each of mass } 10 \text{ mg are suspended from a point by threads } 0.5 \text{ m long.}$ $\text{They are equally charged and repel each other to a distance of } 0.20 \text{ m.}$ $\text{The charge on each of the spheres is } \frac{a}{21} \times 10^{-8} \text{ C.}$ $\text{The value of } 'a' \text{ will be:}$ $\text{(given } g = 10 \text{ ms}^{-2})$ 1 116 JEE MCQ NEW $25$, $30$... 4 Edit Delete
20035 $\text{A charge } 'q' \text{ is placed at one corner of a cube as shown in figure. The flux of electrostatic field } \vec{E} \text{ through the shaded area is:}$ 1 116 JEE MCQ NEW $\frac{q}{4\varepsilon_0}$, $\frac{q}{8\varepsilon_0}$... 2 Edit Delete
20034 $\text{The electric field in a region is given } \vec{E} = \left( \frac{3}{5} E_0 \hat{i} + \frac{4}{5} E_0 \hat{j} \right) \frac{\text{N}}{\text{C}}.$ $\text{The ratio of the flux of the reported field through the rectangular surface of area } 0.2 \text{ m}^2 \text{ (parallel to } y - z \text{ plane) to that of the surface of area } 0.3 \text{ m}^2 \text{ (parallel to } x - z \text{ plane) is:}$ 1 116 JEE MCQ NEW $1 : 2$, $2 : 1$... 1 Edit Delete
20033 $\text{A point charge of } +12 \, \mu\text{C is at a distance } 6 \, \text{cm vertically above the centre of a square of side } 12 \, \text{cm as shown in figure.}$ $\text{The magnitude of the electric flux through the square will be:}$ 1 116 JEE MCQ NEW $226 \times 10^2 \, \text{Nm}^2/\text{C}$, $226 \times 10^3 \, \text{Nm}^2/\text{C}$... 2 Edit Delete
20032 $\text{Two electrons are fixed at a distance of } 2d \text{ apart. A proton is placed at the midpoint between them and is displaced slightly by a distance } x \,(x \ll d) \text{ perpendicular to the line joining the two fixed electrons.}$ $\text{The proton will undergo simple harmonic motion with an angular frequency given by:}$ $\text{(here, } m \text{ is the mass of the proton, } q \text{ is the magnitude of the charge, and } \varepsilon_0 \text{ is the permittivity of free space)}$ 1 116 JEE MCQ NEW $\sqrt{\frac{2q^2}{\pi \varepsilon_0 m d^3}}$, $\sqrt{\frac{\pi \varepsilon_0 m d^3}{2q^2}}$... 3 Edit Delete
20031 $\text{A cube of side } a \text{ has point charges } +Q \text{ located at each of its vertices}$ $\text{except at the origin where the charge is } -Q. \text{ The electric field at the}$ $\text{centre of cube is:}$ 1 116 JEE MCQ NEW $\frac{-Q}{3\sqrt{3}\pi\varepsilon_0 a^2} \left( \hat{x} + \hat{y} + \hat{z} \right)$, $\frac{-2Q}{3\sqrt{3}\pi\varepsilon_0 a^2} \left( \hat{x} + \hat{y} + \hat{z} \right)$... 2 Edit Delete
20030 $\text{Consider the force } F \text{ on a charge } q \text{ due to a uniformly charged}$ $\text{spherical shell of radius } R \text{ carrying charge } Q \text{ distributed uniformly}$ $\text{over it. Which one of the following statements is true for } F, \text{ if } q \text{ is}$ $\text{placed at a distance } r \text{ from the centre of the shell?}$ 1 116 JEE MCQ NEW $F = \frac{1}{4\pi\varepsilon_0} \frac{Qq}{r^2} \text{ for } r > R$, $\frac{1}{4\pi\varepsilon_0} \frac{Qq}{R^2} > F > 0 \text{ for } r < R$... 1 Edit Delete
20029 $\text{Charges } Q_1 \text{ and } Q_2 \text{ are at points } A \text{ and } B \text{ of a right angle triangle } OAB \text{ (see figure).}$ $\text{The resultant electric field at point } O \text{ is perpendicular to the hypotenuse, then } \frac{Q_1}{Q_2} \text{ is proportional to:}$ 1 116 JEE MCQ NEW $\frac{x_2}{x_1^2}$, $\frac{x_2^2}{x_1}$... 3 Edit Delete
20028 $\text{A particle of charge } q \text{ and mass } m \text{ is subjected to an electric field } E = E_0 \left(1 - ax^2\right) \text{ in the } x\text{-direction, where } a \text{ and } E_0 \text{ are constants. Initially, the particle was at rest at } x = 0. \text{ Other than the initial position the kinetic energy of the particle becomes zero when the distance of the particle from the origin is:}$ 1 116 JEE MCQ NEW $\sqrt{\frac{1}{a}}$, $\sqrt{\frac{3}{a}}$... 2 Edit Delete
20027 $\text{Two charged thin infinite plane sheets of uniform surface charge density } \sigma_+ \text{ and } \sigma_-, \text{ where } |\sigma_+| > |\sigma_-|, \text{ intersect at right angle.}$ $\text{Which of the following best represents the electric field lines for this system?}$ 1 116 JEE MCQ NEW $\sigma_+ \quad \sigma_-$, $\sigma_+ \quad \sigma_-$... 3 Edit Delete
20026 $\text{A small point mass carrying a positive charge is released from the edge of a table.}$ $\text{There is a uniform electric field in the horizontal direction.}$ $\text{Which of the following options correctly describes the trajectory of the mass?}$ $\text{(The curves are drawn schematically and are not to scale).}$ 1 116 JEE MCQ NEW $\text{Option 1: Concave down curve}$, $\text{Option 2: Concave up curve}$... 4 Edit Delete
20025 $\text{A charged particle (mass } m \text{ and charge } q) \text{ moves along X axis with velocity } V_0. \text{ When it passes through the origin it enters a region having uniform electric field } \vec{E} = -E\hat{j} \text{ which extends upto } x = d. \text{ Equation of path of electron in the region } x > d \text{ is:}$ 1 116 JEE MCQ NEW $y = \frac{qEd}{mV_0^2} \left( \frac{d}{2} - x \right)$, $y = \frac{qEd}{mV_0^2} (x - d)$... 1 Edit Delete
20024 $\text{Let a total charge } 2Q \text{ be distributed in a sphere of radius } R, \text{ with the charge density given by } \rho(r) = kr, \text{ where } r \text{ is the distance from the centre.}$ $\text{Two charges } A \text{ and } B, \text{ of } -Q \text{ each, are placed on diametrically opposite points, at equal distance, } a \text{ from the centre.}$ $\text{If } A \text{ and } B \text{ do not experience any force, then:}$ 1 116 JEE MCQ NEW $a = 8^{-1/4}R$, $a = 2^{-1/4}R$... 1 Edit Delete
20023 $\text{Shown in the figure is a shell made of a conductor. It has inner radius } a \text{ and outer radius } b, \text{ and carries charge } Q. \text{ At its centre is a dipole } \vec{p} \text{ as shown. In this case:}$ 1 116 JEE MCQ NEW $\text{surface charge density on the inner surface is uniform and equal to } \frac{(Q/2)}{4\pi a^2}$, $\text{surface charge density on the outer surface depends on } |\vec{p}|$... 4 Edit Delete
20022 $\text{A simple pendulum of length } L \text{ is suspended between the plates of a}$ $\text{parallel-plate capacitor producing a uniform electric field } E, \text{ as}$ $\text{shown in the figure. The bob has a mass } m \text{ and a charge } q. \text{ The time}$ $\text{period of oscillation of the pendulum is given by:}$ 1 116 JEE MCQ NEW $2\pi \sqrt{\frac{L}{\sqrt{g^2 - \frac{q^2E^2}{m^2}}}}$, $2\pi \sqrt{\frac{L}{g + \frac{qE}{m}}}$... 4 Edit Delete
20021 $\text{A charge } Q \text{ is placed at a distance } \frac{a}{2} \text{ above the centre of the square surface of the edge } a \text{ as shown in the figure. The electric flux through the square surface is:}$ 1 116 JEE MCQ NEW $\frac{Q}{6\varepsilon_0}$, $\frac{Q}{2\varepsilon_0}$... 1 Edit Delete
20020 $\text{An electric dipole with dipole moment } \vec{p}, \text{ inclined at an angle } \theta \text{ to the } x\text{-axis, experiences a torque } \vec{\tau}_1 = \tau \hat{k} \text{ in the field } \vec{E}_1 = E \hat{i}, \text{ and a torque } \vec{\tau}_2 = -\vec{\tau}_1 \text{ in the field } \vec{E}_2 = \sqrt{3}E \hat{j}. \text{ The angle } \theta \text{ is:}$ 1 116 JEE MCQ NEW $30^\circ$, $45^\circ$... 3 Edit Delete
20019 $\text{The region between two concentric spheres of radii } 'a' \text{ and } 'b', \text{ respectively (see figure), has volume charge density } \rho = \frac{A}{r}, \text{ where } A \text{ is a constant and } r \text{ is the distance from the centre.}$ $\text{At the centre of the spheres is a point charge } Q. \text{ The value of } A \text{ such that the electric field in the region between the spheres will be constant, is:}$ 1 116 JEE MCQ NEW $\frac{Q}{2 \pi a^2}$, $\frac{Q}{2 \pi (b^2 - a^2)}$... 1 Edit Delete
20018 $\text{A long cylindrical shell is uniformly charged such that the upper half of its curved surface carries a positive surface charge density } \sigma, \text{ while the lower half carries an equal negative surface charge density } -\sigma. \text{ Which of the following schematic diagrams (not drawn to scale) most accurately represents the resulting pattern of electric field lines around the cylinder?}$ 1 116 JEE MCQ NEW $\text{Diagram 1}$, $\text{Diagram 2}$... 1 Edit Delete
20017 $\text{In the sonometer experiment, a string of mass } 18 \text{ g having linear}$ $\text{mass density } 20 \text{ g/m oscillates in the fundamental mode (of}$ $\text{frequency } 50 \text{ Hz). The velocity of transverse waves in the string is:}$ $1.\ 70 \text{ m/s}$ $2.\ 60 \text{ m/s}$ $3.\ 90 \text{ m/s}$ $4.\ 110 \text{ m/s}$ 1 114 JEE MCQ NEW $70 \text{ m/s}$, $60 \text{ m/s}$... 3 Edit Delete
20016 $\text{In a certain organ pipe, the consecutive frequencies for resonance are in the ratio of } 1 : 3 : 5 \ldots \text{ and the } 5^{\text{th}} \text{ harmonic frequency is } 405 \text{ Hz. The length of the organ pipe is: (velocity of sound } = 345 \text{ m/s)}$ 1 114 JEE MCQ NEW $\frac{108}{115} \text{ m}$, $\frac{81}{115} \text{ m}$... 3 Edit Delete
20015 $\text{A source of sound is moving away from a stationary observer with constant velocity } 40 \text{ m/s.}$ $\text{Find frequency heard by observer, if original frequency of source is } 400 \text{ Hz and speed of sound in air is:}$ $360 \text{ m/s}$ 1 114 JEE MCQ NEW $330 \text{ Hz}$, $320 \text{ Hz}$... 3 Edit Delete
20014 $\text{The equation of a progressive wave is given by;}$ $y = A \sin(160t - 0.5x), \text{ where } x \text{ and } y \text{ are in metres and } t \text{ is in seconds. If the speed of the wave is } 10x \text{ m/s, then } x =$ 1 114 JEE MCQ NEW 32, 23... 1 Edit Delete
20013 $\text{If the angular frequency of the given motion } y = \sin(\omega t) + \cos(\omega t) \text{ is } k\omega, \text{ then value of } k \text{ is:}$ $1. \frac{1}{2}$ $2. 1$ $3. 2$ $4. \text{none of these}$ 1 114 JEE MCQ NEW $\frac{1}{2}$, $1$... 2 Edit Delete
20012 $\text{The equation of the progressive wave is given as}$ $y = 5 \sin(6t + 0.03x)$ $\text{Find the speed of wave. (Assume all units in SI units)}$ 1 114 JEE MCQ NEW $50 \text{ m/s}$, $100 \text{ m/s}$... 3 Edit Delete
20011 $\text{A car is moving with speed of } 15 \text{ m/s towards a stationary wall. A person in the car press the horn and experience the change in frequency of } 40 \text{ Hz due to reflection from stationary wall. Find the frequency of horn. (Use } v_{\text{sound}} = 330 \text{ m/s)}$ 1 114 JEE MCQ NEW $420 \text{ Hz}$, $400 \text{ Hz}$... 1 Edit Delete
20010 $\text{For a medium, it is given that: Young's modulus} = 3.2 \times 10^{10} \text{ N/m}^2, \text{ density} = 8000 \text{ kg/m}^3. \text{ What is the speed of sound in this medium?}$ 1 114 JEE MCQ NEW $1000 \text{ m/s}$, $2000 \text{ m/s}$... 2 Edit Delete
20009 $\text{The train blowing a whistle of frequency } 320 \text{ Hz is moving with a}$ $\text{velocity of } 36 \text{ km/h towards a hill from which an echo is heard by the}$ $\text{train driver. The frequency of echo will be:}$ $\text{(The velocity of sound in air is } 330 \text{ m/s.)}$ 1 114 JEE MCQ NEW $430 \text{ Hz}$, $340 \text{ Hz}$... 2 Edit Delete
20008 $\text{In the wave equation, } y = 0.5 \sin \frac{2\pi}{\lambda} (400t - x) \text{ m, the velocity of the wave will be:}$ 1 114 JEE MCQ NEW $200 \text{ m/s}$, $200\sqrt{2} \text{ m/s}$... 3 Edit Delete
20007 $\text{A wire of length } 30 \text{ cm, stretched between rigid supports, has its } n^{\text{th}}$ $\text{and } (n+1)^{\text{th}} \text{ harmonics at } 400 \text{ Hz and } 450 \text{ Hz, respectively. If the tension in the string is } 2700 \text{ N, its linear mass density is:}$ 1 114 JEE MCQ NEW $3 \text{ kg/m}$, $6 \text{ kg/m}$... 1 Edit Delete
20006 $\text{A transverse wave is represented by } y = 2 \sin(\omega t - kx) \text{ cm. The value of wavelength (in cm) for which the wave velocity becomes equal to the maximum particle velocity, will be:}$ $1. \ 4\pi$ $2. \ 2\pi$ $3. \ \pi$ $4. \ 2$ 1 114 JEE MCQ NEW $4\pi$, $2\pi$... 1 Edit Delete
20005 $\text{Two waves executing simple harmonic motion travelling in the same direction with the same amplitude and frequency are superimposed.}$ $\text{The resultant amplitude is equal to the } \sqrt{3} \text{ times of amplitude of individual motions.}$ $\text{The phase difference between the two motions is:}$ 1 114 JEE MCQ NEW $30^\circ$, $45^\circ$... 3 Edit Delete
20004 $\text{A tuning fork of frequency } 340 \text{ Hz resonates in the fundamental mode with an air column of length } 125 \text{ cm in a cylindrical tube closed at one end. When water is slowly poured in it, the minimum height of water required for observing resonance once again is:}$ $\text{(Velocity of sound in air is } 340 \text{ ms}^{-1})$ 1 114 JEE MCQ NEW $75 \text{ cm}$, $50 \text{ cm}$... 2 Edit Delete
20003 $\text{The velocity of sound in a gas in which two wavelengths } 4.08 \text{ m and } 4.16 \text{ m produce } 40 \text{ beats in } 12 \text{ s, will be:}$ 1 114 JEE MCQ NEW $282.8 \text{ ms}^{-1}$, $175.5 \text{ ms}^{-1}$... 4 Edit Delete
20002 $\text{An observer moves towards a stationary source of sound with a velocity equal to one-fifth of the velocity of sound. The percentage change in the frequency will be:}$ $1.\ 20\%$ $2.\ 10\%$ $3.\ 5\%$ $4.\ 0\%$ 1 114 JEE MCQ NEW $20\%$, $10\%$... 1 Edit Delete
20001 $\text{A set of 20 tuning forks is arranged in a series of increasing frequencies. If each fork gives 4 beats with respect to the preceding fork and the frequency of the last fork is twice the frequency of the first, then the frequency of the last fork is:}$ $1.\ 152\ \text{Hz}$ $2.\ 234\ \text{Hz}$ $3.\ 134\ \text{Hz}$ $4.\ 144\ \text{Hz}$ 1 114 JEE MCQ NEW $152\ \text{Hz}$, $234\ \text{Hz}$... 1 Edit Delete
20000 $\text{The equations of two waves are given by:}$ $y_1 = 5 \sin 2\pi(x - vt) \text{ cm}$ $y_2 = 3 \sin 2\pi(x - vt + 1.5) \text{ cm}$ $\text{These waves are simultaneously passing through a string. The amplitude of the resulting wave is:}$ 1 114 JEE MCQ NEW $2 \text{ cm}$, $4 \text{ cm}$... 1 Edit Delete
19999 $\text{A tuning fork } A \text{ of unknown frequency produces } 5 \text{ beats per second}$ $\text{with a fork of known frequency of } 340 \text{ Hz. When fork } A \text{ is filed, the}$ $\text{beat frequency decreases to } 2 \text{ beats per second. What is the}$ $\text{frequency of fork } A?$ 1 114 JEE MCQ NEW $342 \text{ Hz}$, $345 \text{ Hz}$... 3 Edit Delete
19998 $\text{The mass per unit length of a uniform wire is } 0.135 \text{ g/cm. A transverse wave of the form } y = -0.21 \sin(x + 30t) \text{ is produced in it, where } x \text{ is in meter and } t \text{ is in second. The expected value of the tension in the wire is:}$ 1 114 JEE MCQ NEW $12.15 \text{ N}$, $30.12 \text{ N}$... 1 Edit Delete
19997 $\text{The percentage increase in the speed of transverse waves produced in a stretched string when the tension is increased by } 4\% \text{ is:}$ $1. \ 4\%$ $2. \ 3\%$ $3. \ 2\%$ $4. \ 1\%$ 1 114 JEE MCQ NEW $4\%$, $3\%$... 3 Edit Delete
19996 $\text{A student is performing the experiment of resonance column. The diameter of the column tube is } 6 \text{ cm. The frequency of the tuning fork is } 504 \text{ Hz. Speed of the sound at the given temperature is } 336 \text{ m/s.}$ $\text{The zero of the meter scale coincides with the top end of the resonance column tube. The reading of the water level in the column, when the first resonance occurs is:}$ 1 114 JEE MCQ NEW $13 \text{ cm}$, $16.6 \text{ cm}$... 4 Edit Delete
19995 $\text{Which, of the following equation represents a travelling wave?}$ $1.\ y = A \sin(15x - 2t)$ $2.\ y = Ae^{-x^2}(vt + \theta)$ $3.\ y = Ae^x \cos(\omega t - \theta)$ $4.\ y = A \sin x \cos \omega t$ 1 114 JEE MCQ NEW $y = A \sin(15x - 2t)$, $y = Ae^{-x^2}(vt + \theta)$... 1 Edit Delete
19994 $\text{A heavy ball of mass } M \text{ is suspended from the ceiling of a car by a light string of mass } m (m << M).$ $\text{When the car is at rest, the speed of transverse waves in the string is } 60 \text{ ms}^{-1}.$ $\text{When the car has acceleration } a, \text{ the wave speed increases to } 60.5 \text{ ms}^{-1}.$ $\text{The value of } a, \text{ in terms of gravitational acceleration } g \text{ is closest to:}$ 1 114 JEE MCQ NEW $\frac{g}{\sqrt{30}}$, $\frac{g}{\sqrt{5}}$... 1 Edit Delete
19993 $\text{Two cars } A \text{ and } B \text{ are moving away from each other in opposite directions.}$ $\text{Both the cars are moving with a speed of } 20 \text{ ms}^{-1} \text{ with respect to the ground.}$ $\text{If an observer in car } A \text{ detects a frequency } 2000 \text{ Hz of the sound coming from car } B,$ $\text{what is the natural frequency of the sound source in car } B? \text{ (speed of sound in air } = 340 \text{ ms}^{-1})$ 1 114 JEE MCQ NEW $2060 \text{ Hz}$, $2150 \text{ Hz}$... 4 Edit Delete
19992 $\text{A string is clamped at both the ends and it is vibrating in its } 4^{\text{th}} \text{ harmonic. The equation of the stationary wave is}$ $Y = 0.3 \sin(0.157x) \cos(200\pi t). \text{ The length of the string is: (All quantities are in SI units.)}$ 1 114 JEE MCQ NEW $40 \text{ m}$, $80 \text{ m}$... 2 Edit Delete
19991 $\text{Two sitar strings } A \text{ and } B \text{ playing the note 'Dha' are slightly out of tune and produce beats of frequency } 5 \text{ Hz.}$ $\text{The tension of the string } B \text{ is slightly increased and the beat frequency is found to decrease by } 3 \text{ Hz.}$ $\text{If the frequency of } A \text{ is } 425 \text{ Hz, then the original frequency of } B \text{ is:}$ 1 114 JEE MCQ NEW $428 \text{ Hz}$, $430 \text{ Hz}$... 4 Edit Delete
19990 $\text{The end correction of a resonance column is } 1\text{ cm. If the shortest length resonating with the tuning fork is } 10\text{ cm, the next resonating length should be:}$ 1 114 JEE MCQ NEW $32\text{ cm}$, $40\text{ cm}$... 1 Edit Delete
19989 $\text{A tuning fork vibrates with frequency } 256 \text{ Hz and gives one beat per second with the third normal mode of vibration of an open pipe. What is the length of the pipe?}$ $\text{(Speed of sound in air is } 340 \text{ ms}^{-1})$ 1 114 JEE MCQ NEW $220 \text{ cm}$, $200 \text{ cm}$... 2 Edit Delete
19988 $\text{A standing wave is formed by the superposition of two waves traveling in opposite directions. The transverse displacement is given by } y(x, t) = 0.5 \sin\left(\frac{5\pi}{4} x\right) \cos(200\pi t). \text{ What is the speed of the traveling wave moving in the positive } x \text{ direction?}$ $\text{(} x \text{ and } t \text{ are in meters and seconds, respectively.)}$ 1 114 JEE MCQ NEW $180 \text{ m/s}$, $160 \text{ m/s}$... 2 Edit Delete
19987 $\text{Two wires } W_1 \text{ and } W_2 \text{ have the same radius } r \text{ and respective densities } \rho_1 \text{ and } \rho_2 \text{ such that } \rho_2 = 4\rho_1. \text{ They are joined together at the point } O, \text{ as shown in the figure. The combination is used as a sonometer wire and kept under tension } T. \text{ The point } O \text{ is midway between the two bridges. When a stationary wave is set up in the composite wire, the joint is found to be a node. The ratio of the number of antinodes formed in } W_1 \text{ to } W_2 \text{ is:}$ 1 114 JEE MCQ NEW $4 : 1$, $1 : 1$... 3 Edit Delete
19986 $\text{A train is moving with a speed of } 10 \text{ m/s towards a platform and blows a horn with frequency } 400 \text{ Hz.}$ $\text{Find the frequency heard by a passenger standing on the platform.}$ $\text{Take speed of sound } = 310 \text{ m/s.}$ 1 114 JEE MCQ NEW $405 \text{ Hz}$, $425 \text{ Hz}$... 4 Edit Delete
19985 $\text{A string of mass per unit length equal to } 7 \times 10^{-3} \text{ kg/m is subjected to a tension equal to } 70 \text{ N. The speed of the transverse wave on this string is equal to:}$ 1 114 JEE MCQ NEW $10 \text{ m/s}$, $50 \text{ m/s}$... 3 Edit Delete
19984 $\text{The equation of wave is given as } y = 0.05 \sin(2x - 4t), \text{ where } x \text{ in meters and } t \text{ in seconds. The velocity of the wave is equal to:}$ 1 114 JEE MCQ NEW $2 \text{ m/s}$, $4 \text{ m/s}$... 1 Edit Delete
19983 $\text{A transverse wave travels along a uniform wire with a length of } 50 \text{ cm}$ $\text{and a mass of } 10 \text{ grams at a speed of } 60 \text{ m/s. If the wire has a}$ $\text{cross-sectional area of } 2.0 \text{ mm}^2 \text{ and a Young's modulus of }$ $1.2 \times 10^{11} \text{ N/m}^2, \text{ the extension of the wire over its natural length}$ $\text{due to its tension will be:}$ 1 114 JEE MCQ NEW $0.12 \text{ mm}$, $0.15 \text{ mm}$... 2 Edit Delete
19982 $\text{When a car is approaching the observer, the frequency of the horn heard by observer is } 100 \text{ Hz.}$ $\text{After passing the observer, it is } 50 \text{ Hz.}$ $\text{If the observer moves with the car, the frequency will be } \frac{x}{3} \text{ Hz.}$ $\text{Then } x =$ 1 114 JEE MCQ NEW $100$, $150$... 3 Edit Delete
19981 $\text{Sound travels in a mixture of two moles of helium and } n \text{ moles of hydrogen.}$ $\text{If RMS speed of gas molecules in the mixture is } \sqrt{2} \text{ times}$ $\text{the speed of sound, then the value of } n \text{ will be:}$ $1.\ 1$ $2.\ 2$ $3.\ 3$ $4.\ 4$ 1 114 JEE MCQ NEW $1$, $2$... 2 Edit Delete
19980 $\text{An observer is riding on a bicycle and moving towards a hill at } 18 \text{ kmh}^{-1}. \text{ He hears a sound from a source at some distance behind him directly as well as after its reflection from the hill. If the original frequency of the sound as emitted by the source is } 640 \text{ Hz and the velocity of the sound in air is } 320 \text{ m/s, the beat frequency between the two sounds heard by the observer will be:}$ 1 114 JEE MCQ NEW $20 \text{ Hz}$, $40 \text{ Hz}$... 1 Edit Delete
19979 $\text{In an experiment to determine the velocity of sound in air at room temperature, a resonance is observed when the air column has a length of } 20.0 \text{ cm for a tuning fork of frequency } 400 \text{ Hz is used. The velocity of the sound at room temperature is } 336 \text{ ms}^{-1}. \text{ The third resonance is observed when the air column has a length of:}$ $1. \ 100 \text{ cm}$ $2. \ 110 \text{ cm}$ $3. \ 104 \text{ cm}$ $4. \ 120 \text{ cm}$ 1 114 JEE MCQ NEW $100 \text{ cm}$, $110 \text{ cm}$... 3 Edit Delete
19978 $\text{A longitudinal wave is represented by } x = 10 \sin 2\pi \left(nt - \frac{x}{\lambda}\right) \text{ cm. The maximum particle velocity will be four times the wave velocity if the determined value of wavelength is equal to:}$ 1 114 JEE MCQ NEW $2\pi \text{ cm}$, $5\pi \text{ cm}$... 2 Edit Delete
19977 $\text{Two travelling waves of equal amplitudes and equal frequencies move in opposite directions along a string. They interfere to produce a stationary wave whose equation is given by}$ $y = 10 \cos(\pi x) \sin\left(\frac{2\pi t}{T}\right) \text{ cm. The amplitude of the particle at }$ $x = \frac{4}{3} \text{ cm will be:}$ 1 114 JEE MCQ NEW $5 \text{ cm}$, $10 \text{ cm}$... 1 Edit Delete
19976 $\text{In a resonance tube experiment, a tuning fork resonates with the air column when the water level is at } 17.0 \text{ cm from the bottom.}$ $\text{The next resonance with the same tuning fork occurs when the water level is at } 24.5 \text{ cm.}$ $\text{Given that the speed of sound in air is } 330 \text{ m/s, the frequency of the tuning fork is:}$ 1 114 JEE MCQ NEW $1100 \text{ Hz}$, $3300 \text{ Hz}$... 3 Edit Delete
19975 $\text{The driver of a bus approaching a big wall notices that the frequency of his bus's horn changes from } 420 \text{ Hz to } 490 \text{ Hz when he hears it after it gets reflected from the wall. Find the speed of the bus if speed of the sound is } 330 \text{ ms}^{-1}.$ 1 114 JEE MCQ NEW $61 \text{ kmh}^{-1}$, $81 \text{ kmh}^{-1}$... 4 Edit Delete
19974 $\text{For a transverse wave travelling along a straight line, the distance between two peaks (crests) is } 5 \text{ m, while the distance between one crest and one trough is } 1.5 \text{ m. The possible wavelengths (in m) of the waves are:}$ $1. \ 1, 2, 3, \ldots$ $2. \ \frac{1}{1}, \frac{1}{3}, \frac{1}{5}, \ldots$ $3. \ \frac{1}{2}, \frac{1}{4}, \frac{1}{6}, \ldots$ $4. \ 1, 3, 5, \ldots$ 1 114 JEE MCQ NEW $1, 2, 3, \ldots$, $\frac{1}{1}, \frac{1}{3}, \frac{1}{5}, \ldots$... 2 Edit Delete
19973 $\text{A uniform thin rope of length } 12 \text{ m and mass } 6 \text{ kg hangs vertically from a rigid support and a block of mass } 2 \text{ kg is attached to its free end.}$ $\text{A transverse short wave-train of wavelength } 6 \text{ cm is produced at the lower end of the rope.}$ $\text{What is the wavelength of the wavetrain (in cm) when it reaches the top of the rope?}$ 1 114 JEE MCQ NEW $12$, $9$... 1 Edit Delete
19972 $\text{Two identical strings, } X \text{ and } Z, \text{ made of the same material, have tensions } T_X \text{ and } T_Z \text{ respectively. If their fundamental frequencies are } 450 \text{ Hz and } 300 \text{ Hz, respectively, the ratio } \frac{T_X}{T_Z} =$ 1 114 JEE MCQ NEW $0.44$, $1.5$... 3 Edit Delete
19971 $\text{A progressive wave travelling along the positive } x\text{-direction is represented by } y(x, t) = A \sin(kx - \omega t + \phi).$ $\text{Its snapshot at } t = 0 \text{ is given in the figure.}$ 1 114 JEE MCQ NEW $\frac{\pi}{2}$, $\pi$... 2 Edit Delete
19970 The correct figure that shows, schematically, the wave pattern produced by the superposition of two waves of frequencies $9 \text{ Hz}$ and $11 \text{ Hz}$, is: 1 114 JEE MCQ NEW Option 1, Option 2... 1 Edit Delete
19969 $\text{A string of length } 2.0 \text{ m, fixed at both ends is driven by a } 240 \text{ Hz vibrator.}$ $\text{If the string vibrates in its third harmonic mode, the speed of the wave and its fundamental frequency, respectively, are:}$ 1 114 JEE MCQ NEW $320 \text{ m/s, } 80 \text{ Hz}$, $180 \text{ m/s, } 120 \text{ Hz}$... 1 Edit Delete
19968 $\text{The pressure wave } P = 0.01 \sin(1000t - 3x) \text{ Nm}^{-2}, \text{ corresponds to the sound produced by a vibrating blade on a day when the atmospheric temperature is } 0^{\circ} \text{C.}$ $\text{On some other day, when the temperature is } T, \text{ the speed of sound produced by the same blade and at the same frequency is found to be } 336 \text{ ms}^{-1}. \text{ The approximate value of } T \text{ is:}$ 1 114 JEE MCQ NEW $4^{\circ} \text{C}$, $12^{\circ} \text{C}$... 1 Edit Delete
19967 $\text{A wire of length } 2L \text{ is formed by joining two wires, } A \text{ and } B, \text{ each of the same length but with different radii, } r \text{ and } 2r, \text{ respectively, and made of the same material. The wire vibrates at a frequency such that the joint between the two wires forms a node. If the number of antinodes in wire } A \text{ is } p \text{ and in wire } B \text{ is } q, \text{ the ratio } p : q \text{ is:}$ 1 114 JEE MCQ NEW $3 : 5$, $4 : 9$... 3 Edit Delete
19966 $\text{A granite rod of } 60 \text{ cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is } 2.7 \times 10^3 \text{ kg/m}^3 \text{ and it's Young's modulus is } 9.27 \times 10^{10} \text{ Pa.}$ $\text{What will be the fundamental frequency of the longitudinal vibrations?}$ 1 114 JEE MCQ NEW $5 \text{ kHz}$, $2.5 \text{ kHz}$... 1 Edit Delete
19965 $\text{A pipe open at both ends has a fundamental frequency } f \text{ in air. The pipe is dipped vertically in water so that half of it is in water. The fundamental frequency of the air column is now:}$ 1 114 JEE MCQ NEW $\frac{f}{2}$, $\frac{3f}{4}$... 4 Edit Delete
19964 $\text{A uniform string of length } 20 \text{ m is suspended from a rigid support. A short wave pulse is introduced at its lowest end. It starts moving up the string. The time taken to reach the support is: (take } g = 10 \text{ ms}^{-2})$ 1 114 JEE MCQ NEW $2\pi \sqrt{2} \text{ s}$, $2 \text{ s}$... 3 Edit Delete
19963 $\text{A pipe length of } 85 \text{ cm is closed from one end. Find the number of possible natural oscillations of the air column in the pipe whose frequencies lie below } 1250 \text{ Hz. The velocity of sound in air is } 340 \text{ m/s:}$ 1 114 JEE MCQ NEW $8$, $6$... 2 Edit Delete
19962 $\text{Two identical positive charges } Q \text{ each are fixed at a distance of } '2a' \text{ apart from each other. Another point charge } q_0 \text{ with mass } 'm' \text{ is placed at midpoint between two fixed charges. For a small displacement along the line joining the fixed charges, the charge } q_0 \text{ executes SHM. The time period of oscillation of charge } q_0 \text{ will be:}$ 1 113 JEE MCQ NEW $\sqrt{\frac{4\pi^3 \varepsilon_0 m a^3}{q_0 Q}}$, $\sqrt{\frac{q_0 Q}{4\pi^3 \varepsilon_0 m a^3}}$... 1 Edit Delete
19961 $\text{When a particle executes simple Harmonic motion, the nature of graph of velocity as a function of displacement will be:}$ 1 113 JEE MCQ NEW $\text{Circular}$, $\text{Elliptical}$... 2 Edit Delete
19960 $\text{In figure (A), mass '2 m' is fixed on mass 'm' which is attached to two springs of spring constant } k. \text{ In figure (B), mass 'm' is attached to two springs of spring constant } k \text{ and } 2k. \text{ If mass 'm' in (A) and (B) are displaced by distance 'x' horizontally and then released, then time period } T_1 \text{ and } T_2 \text{ corresponding to (A) and (B) respectively follow the relation}$ 1 113 JEE MCQ NEW $\frac{T_1}{T_2} = \frac{3}{\sqrt{2}}$, $\frac{T_1}{T_2} = \sqrt{\frac{3}{2}}$... 2 Edit Delete
19959 $\text{The equation of a particle executing simple harmonic motion is given by } x = \sin \pi \left( t + \frac{1}{3} \right) \text{ m. At } t = 1 \text{ s, the speed of the particle will be:}$ $\text{(Given: } \pi = 3.14)$ 1 113 JEE MCQ NEW $0 \text{ cm s}^{-1}$, $157 \text{ cm s}^{-1}$... 2 Edit Delete
19958 $\text{The displacement of a simple harmonic oscillator after 3 seconds starting from its mean position is equal to half of its amplitude.}$ $\text{The time period of the harmonic motion is:}$ 1 113 JEE MCQ NEW $6 \text{ s}$, $8 \text{ s}$... 4 Edit Delete
19957 $\text{Two massless springs with spring constants } 2k \text{ and } 9k, \text{ carry } 50 \text{ g and } 100 \text{ g masses at their free ends.}$ $\text{These two masses oscillate vertically such that their maximum velocities are equal.}$ $\text{Then, the ratio of their respective amplitudes will be:}$ 1 113 JEE MCQ NEW $1 : 2$, $3 : 2$... 2 Edit Delete
19956 $\text{A particle executes SHM from the mean position with amplitude 'a' and time period } T. \text{ The displacement of the particle when its speed is half of the maximum speed is } \frac{\sqrt{x}}{2} a. \text{ The value of } x \text{ is:}$ 1 113 JEE MCQ NEW $4$, $3$... 2 Edit Delete
19955 $\text{Given below are two statements:}$ $\text{Statement I: A seconds pendulum has a time period of 1 second.}$ $\text{Statement II: A seconds pendulum takes exactly 1 second to travel between its two extreme positions.}$ 1 113 JEE MCQ NEW $\text{Both Statement I and Statement II are incorrect.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 2 Edit Delete
19954 $\text{When a particle executes SHM, the nature of graphical representation of velocity as a function of displacement is:}$ $1.\ \text{circular}$ $2.\ \text{elliptical}$ $3.\ \text{parabolic}$ $4.\ \text{straight line}$ 1 113 JEE MCQ NEW $\text{circular}$, $\text{elliptical}$... 2 Edit Delete
19953 $\text{A block of mass } m \text{ attached to a massless spring is performing}$ $\text{oscillatory motion of amplitude } 'A' \text{ on a frictionless horizontal plane.}$ $\text{If half of the mass of the block breaks off when it is passing through}$ $\text{its equilibrium point, the amplitude of oscillation for the remaining}$ $\text{system become } fA. \text{ The value of } f \text{ is:}$ 1 113 JEE MCQ NEW $\sqrt{2}$, $1$... 4 Edit Delete
19952 $\text{The displacement of a damped harmonic oscillator is given by}$ $x(t) = e^{-0.1t} \cos(10\pi t + \phi).$ $\text{Here } t \text{ is in seconds. The time taken for its amplitude of vibration to drop to half of its initial value is close to:}$ 1 113 JEE MCQ NEW $4 \text{ s}$, $13 \text{ s}$... 3 Edit Delete
19951 $\text{A damped harmonic oscillator has a frequency of } 5 \text{ oscillations per second.}$ $\text{The amplitude drops to half its value for every } 10 \text{ oscillations.}$ $\text{The time it will take to } \frac{1}{1000} \text{ of the original amplitude is close to:}$ 1 113 JEE MCQ NEW $50 \text{ s}$, $100 \text{ s}$... 4 Edit Delete
19950 $\text{A particle executes simple harmonic motion and is located at } x = a, b \text{ and } c \text{ at times } t_0, 2t_0 \text{ and } 3t_0 \text{ respectively. The frequency of the oscillation is:}$ 1 113 JEE MCQ NEW $\frac{1}{2\pi t_0} \cos^{-1}\left(\frac{a+c}{2b}\right)$, $\frac{1}{2\pi t_0} \cos^{-1}\left(\frac{a+2b}{3c}\right)$... 1 Edit Delete
19949 $\text{In an experiment to determine the period of a simple pendulum of length } 1 \text{ m, it is attached to different spherical bobs of radii } r_1 \text{ and } r_2. \text{ The two spherical bobs have uniform mass distribution. If the relative difference in the periods, is found to be } 5 \times 10^{-4} \text{ s, the difference in radii, } |r_1 - r_2| \text{ is best given by:}$ $1.\ 0.1\ \text{cm}$ $2.\ 0.01\ \text{cm}$ $3.\ 0.5\ \text{cm}$ $4.\ 1\ \text{cm}$ 1 113 JEE MCQ NEW $0.1\ \text{cm}$, $0.01\ \text{cm}$... 1 Edit Delete
19948 $\text{A 1 kg block attached to a spring vibrates with a frequency of 1 Hz on a frictionless horizontal table. Two springs identical to the original spring are attached in parallel to an 8 kg block placed on the same table. So, the frequency of vibration of the 8 kg block is:}$ 1 113 JEE MCQ NEW $\frac{1}{4} \text{ Hz}$, $\frac{1}{2\sqrt{2}} \text{ Hz}$... 4 Edit Delete
19947 $\text{The ratio of maximum acceleration to maximum velocity in a simple}$ $\text{harmonic motion is } 10 \text{ s}^{-1}. \text{ At } t = 0, \text{ the displacement is } 5 \text{ m. What}$ $\text{is the maximum acceleration?}$ $\text{(The initial phase is } \frac{\pi}{4})$ 1 113 JEE MCQ NEW $500\sqrt{2} \text{ m/s}^2$, $500 \text{ m/s}^2$... 1 Edit Delete
19946 $\text{A cylindrical block of wood (density } = 650 \text{ kg m}^{-3}\text{), of base area } 30 \text{ cm}^2 \text{ and height } 54 \text{ cm, floats in a liquid of density } 900 \text{ kg m}^{-3}\text{. The block is depressed slightly and then released. The time period of the resulting oscillations of the block would be equal to that of a simple pendulum of length (nearly):}$ 1 113 JEE MCQ NEW $52 \text{ cm}$, $65 \text{ cm}$... 3 Edit Delete
19945 $\text{In simple harmonic motion, the total mechanical energy of given system is } E. \text{ If mass of oscillating particle } P \text{ is doubled then the new energy of the system for same amplitude is } -$ 1 113 JEE MCQ NEW $E \sqrt{2}$, $E \sqrt{2}$... 2 Edit Delete
19944 $\text{A particle executing simple harmonic motion along } x\text{-axis, with amplitude } A \text{ about the origin. Then the ratio of kinetic energy and total energy at } x = \frac{A}{3} \text{ is:}$ 1 113 JEE MCQ NEW $\frac{8}{9}$, $\frac{7}{8}$... 1 Edit Delete
19943 $\text{A pendulum bob is released from angle } \theta \text{ with the vertical as shown in the figure. If its acceleration at maximum amplitude is the same as at mean position, then find } \theta.$ 1 113 JEE MCQ NEW $\tan^{-1}(\sqrt{2})$, $2 \tan^{-1}\left(\frac{1}{\sqrt{5}}\right)$... 3 Edit Delete
19942 $\text{Assertion (A): The angular velocity of the moon revolving about the earth is more than the angular velocity of the earth revolving around the sun.}$ $\text{Reason (R): The time taken by the moon to revolve around the earth is less than the time taken by the earth to revolve around the sun.}$ 1 113 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19941 $\text{A particle performing simple harmonic motion according to}$ $y = A \sin \omega t.$ $\text{Then its kinetic energy } (K.E.), \text{ potential energy } (P.E.), \text{ and speed } (v) \text{ at the position } Y = \frac{A}{2} \text{ are:}$ 1 113 JEE MCQ NEW $K.E. = \frac{kA^2}{8}$ $P.E. = \frac{3kA^2}{8}$ $v = \frac{A}{3} \sqrt{\frac{k}{m}}$, $K.E. = \frac{3kA^2}{8}$ $P.E. = \frac{kA^2}{8}$ $v = \frac{A}{2} \sqrt{\frac{3k}{m}}$... 2 Edit Delete
19940 $\text{A particle performing simple harmonic motion such that its amplitude is } 4 \text{ m and speed of the particle at the mean position is } 10 \text{ m/s.}$ $\text{Find the distance of the particle from the mean position where velocity becomes } 5 \text{ m/s.}$ 1 113 JEE MCQ NEW $\sqrt{3} \text{ m}$, $2\sqrt{3} \text{ m}$... 2 Edit Delete
19939 $\text{In the context of linear simple harmonic motion (SHM), consider the following statements:}$ $\text{(A) Acceleration is maximum at the mean position.}$ $\text{(B) Velocity is maximum at the extreme position.}$ $\text{(C) Acceleration is maximum at the extreme position.}$ $\text{(D) Velocity is maximum at the mean position.}$ $\text{Choose the correct option from the given ones:}$ 1 113 JEE MCQ NEW $(\text{B}), (\text{C}) \text{ and } (\text{D}) \text{ only}$, $(\text{A}) \text{ and } (\text{D}) \text{ only}$... 4 Edit Delete
19938 $\text{A particle is performing simple harmonic motion (SHM), whose distance from the mean position varies as } x = A \sin \omega t. \text{ What would be the position of the particle from the mean position where kinetic energy and potential energy are equal?}$ 1 113 JEE MCQ NEW $\left( \frac{A}{2} \right)$, $\left( \frac{A}{\sqrt{2}} \right)$... 2 Edit Delete
19937 $\text{A particle is performing SHM having position } x = A \cos(30^\circ), \text{ and } A = 40 \text{ cm.}$ $\text{If its kinetic energy at this position is } 200 \text{ J, then the value of force constant is:}$ 1 113 JEE MCQ NEW $10 \text{ kN/m}$, $20 \text{ kN/m}$... 1 Edit Delete
19936 $\text{Which graph correctly represents the difference } (d) \text{ between the total energy and the potential energy of a particle in linear simple harmonic motion (SHM) as a function of its position } x, \text{ where } x = 0 \text{ denotes the mean position?}$ 1 113 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
19935 $\text{A body is doing SHM with amplitude } A. \text{ When it is at } x = +\frac{A}{2}, \text{ the ratio of kinetic energy to potential energy would be:}$ 1 113 JEE MCQ NEW $1 : 1$, $3 : 1$... 2 Edit Delete
19934 $\text{For a particle undergoing linear simple harmonic motion (SHM), the graph showing the variation of kinetic energy, } K \text{ with position, } x \text{ of the particle is:}$ 1 113 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 4 Edit Delete
19933 $\text{For a particle performing linear SHM, its position } (x) \text{ as a function of time } (t) \text{ is given by } x = A \sin(\omega t + \delta).$ $\text{If, at } t = 0, \text{ particle is at } +\frac{A}{2} \text{ and is moving towards } x = +A, \text{ then } \delta = $ 1 113 JEE MCQ NEW $\frac{\pi}{3} \text{ rad}$, $\frac{\pi}{6} \text{ rad}$... 2 Edit Delete
19932 $\text{The phasor of a particle performing SHM is as shown in the diagram.}$ $\text{The SHM has an angular frequency } \omega \text{ and at } t = 0, \text{ the phasor lies along } OP. \text{ At any time } t \text{ further, the projection of the phasor along the } y\text{-axis is given by:}$ 1 113 JEE MCQ NEW $R \sin \left( \omega t + \frac{\pi}{6} \right)$, $R \cos \left( \omega t + \frac{\pi}{6} \right)$... 1 Edit Delete
19931 $\text{In the simple harmonic motion of a pendulum, the square of the time period can be plotted against the length of the pendulum } (l) \text{ as:}$ 1 113 JEE MCQ NEW $T^2 \text{ vs } l \text{ (straight line passing through the origin)}$, $T^2 \text{ vs } l \text{ (negative slope)}$... 1 Edit Delete
19930 $\text{For the oscillations exhibited by the spring-block system, on a smooth surface (along the springs), the time period is:}$ 1 113 JEE MCQ NEW $2\pi \sqrt{\frac{m(k_1+k_2)}{k_1k_2}}$, $2\pi \sqrt{\frac{m(k_1+k_2)}{2k_1k_2}}$... 3 Edit Delete
19929 $\text{Which of the following graphs best represents the relation between the square of the time period and the length of a simple pendulum?}$ 1 113 JEE MCQ NEW $T^2 \text{ vs. } l \text{ (linear graph passing through origin)}$, $T^2 \text{ vs. } l \text{ (decreasing curve)}$... 1 Edit Delete
19928 $\text{The equations of two simple harmonic motions is given by}$ $y_1 = 10 \sin \left( \omega t + \frac{\pi}{3} \right)$ $\text{and}$ $y_2 = 5[\sin(\omega t) + \sqrt{3} \cos(\omega t)].$ $\text{The amplitude of the resultant SHM is:}$ $1. \ 10 \ \text{m}$ $2. \ 20 \ \text{m}$ $3. \ 5 \ \text{m}$ $4. \ 15 \ \text{m}$ 1 113 JEE MCQ NEW $10 \ \text{m}$, $20 \ \text{m}$... 2 Edit Delete
19927 $\text{For a particle performing simple harmonic motion, the maximum potential energy is } 25 \text{ J.}$ $\text{What is the kinetic energy of the particle when it is at half of its amplitude?}$ 1 113 JEE MCQ NEW $18.75 \text{ kJ}$, $18.75 \text{ J}$... 2 Edit Delete
19926 $\text{A block of mass } m \text{ is connected to two identical springs of force constant } K \text{ as shown. The frequency of the block is:}$ 1 113 JEE MCQ NEW $2\pi \sqrt{\frac{2m}{K}}$, $\frac{1}{2\pi} \sqrt{\frac{K}{m}}$... 4 Edit Delete
19925 $\text{The relation between velocity } (v) \text{ and position } (x) \text{ of a particle moving along the x-axis is given by } 4v^2 = 50 - x^2. \text{ The time period of oscillatory motion of the particle is: (Use } \pi = \frac{22}{7})$ 1 113 JEE MCQ NEW $\frac{88}{9} \text{ s}$, $\frac{88}{7} \text{ s}$... 2 Edit Delete
19924 $\text{In the shown mass-spring system, when it is set into oscillations along the spring, it has angular frequency } \omega_1 \text{ if } m = 1 \text{ kg and } \omega_2 \text{ if } m = 2 \text{ kg. Then the value of } \frac{\omega_1}{\omega_2} \text{ is equal to:}$ 1 113 JEE MCQ NEW $1$, $\sqrt{2}$... 2 Edit Delete
19923 $\text{A particle undergoing SHM, follows the position-time equation given as } x = A \sin(\omega t + \pi/3).$ $\text{If the SHM motion has a time period of } T,$ $\text{for the first time after } t = 0, \text{ the velocity will be maximum at a time,}$ 1 113 JEE MCQ NEW $\frac{T}{2}$, $\frac{T}{3}$... 2 Edit Delete
19922 $\text{A particle performing simple harmonic motion with amplitude, } A \text{ starts from } x = 0 \text{ and reaches } x = A/2 \text{ in } 2 \text{ s.}$ $\text{The time required for the particle to go from } x = A/2 \text{ to } x = A \text{ is:}$ 1 113 JEE MCQ NEW $1.5 \text{ s}$, $4 \text{ s}$... 2 Edit Delete
19921 $\text{A particle is dropped inside a tunnel of the earth about any diameter.}$ $\text{Particle starts oscillating, with time period=}$ $(R = \text{Radius of earth}, g = \text{acceleration due to gravity on earth's surface}).$ 1 113 JEE MCQ NEW $2\pi \sqrt{\frac{R}{g}}$, $\pi \sqrt{\frac{R}{g}}$... 1 Edit Delete
19920 $\text{A block of mass } 2 \text{ kg is attached to two identical springs, each with a force constant of } 20 \text{ N/m, as shown in the figure. The time period of the oscillation of the block is:}$ 1 113 JEE MCQ NEW $2\pi \sqrt{\frac{1}{20}} \text{ s}$, $\pi \sqrt{\frac{1}{20}} \text{ s}$... 1 Edit Delete
19919 $\text{The metallic bob of a simple pendulum has a relative density equal to } 5. \text{ The time period of this pendulum is } 10 \text{ s. If the metallic bob is immersed in water, then the new time period becomes } 5\sqrt{x} \text{ s. The value of } x \text{ will be:}$ $1. \ 5$ $2. \ 7$ $3. \ 9$ $4. \ 2$ 1 113 JEE MCQ NEW $5$, $7$... 1 Edit Delete
19918 $\text{The time period of oscillation of a simple pendulum of length } L, \text{ suspended from the roof of a vehicle, which moves without friction down an inclined plane of inclination } \alpha, \text{ is given by:}$ 1 113 JEE MCQ NEW $2\pi \sqrt{\frac{L}{g \cos \alpha}}$, $2\pi \sqrt{\frac{L}{g \sin \alpha}}$... 1 Edit Delete
19917 $\text{As per the given figures, two springs of spring constants } k \text{ and } 2k \text{ are connected to mass } m. \text{ If the period of oscillation in figure } (a) \text{ is } 3 \text{ s, then the period of oscillation in figure } (b) \text{ is } \sqrt{x} \text{ s. The value of } x \text{ is:}$ 1 113 JEE MCQ NEW $3$, $4$... 3 Edit Delete
19916 $\text{The length of a seconds pendulum at a height } h = 2R \text{ from the earth's surface will be:}$ $\text{(Given } R = \text{The radius of the earth and acceleration due to gravity at the surface of the earth } g = \pi^2 \text{ m/s}^2)$ 1 113 JEE MCQ NEW $\frac{2}{9} \text{ m}$, $\frac{4}{9} \text{ m}$... 4 Edit Delete
19915 $\text{The motion of a simple pendulum executing simple harmonic motion is represented by the equation;}$ $y = A \sin(\pi t + \phi), \text{ where time is measured in seconds. The length of the pendulum is:}$ 1 113 JEE MCQ NEW $97.23 \text{ cm}$, $25.3 \text{ cm}$... 3 Edit Delete
19914 $\text{A body is performing simple harmonic motion with an amplitude of } 10 \text{ cm. The velocity of the body was tripled by air jet when it is at } 5 \text{ cm from its mean position. The new amplitude of vibration is } \sqrt{x} \text{ cm. The value of } x \text{ is:}$ 1 113 JEE MCQ NEW $500$, $600$... 3 Edit Delete
19913 $\text{The time period of a simple pendulum in a stationary lift is } T. \text{ If the lift accelerates upward with an acceleration of } \frac{g}{6} \text{ (where } g \text{ is the acceleration due to gravity), then the time period of the pendulum would be:}$ 1 113 JEE MCQ NEW $\sqrt{\frac{6}{5}} T$, $\sqrt{\frac{5}{6}} T$... 3 Edit Delete
19912 $\text{The time period of a simple pendulum is } T. \text{ The time taken to complete } \frac{5}{8} \text{ oscillations starting from the mean position is } \frac{\alpha}{\beta} T. \text{ The value of } \alpha \text{ is:}$ 1 113 JEE MCQ NEW $3$, $6$... 3 Edit Delete
19911 $\text{If two identical springs, each with a spring constant } k, \text{ are connected in series, the new spring constant and time period will change by a factor of:}$ 1 113 JEE MCQ NEW $\frac{1}{2}, \sqrt{2}$, $\frac{1}{4}, \sqrt{2}$... 1 Edit Delete
19910 $\text{Assume that a tunnel is dug along a chord of the earth, at a perpendicular distance } (R/2) \text{ from the earth's center, where } 'R' \text{ is the radius of the Earth. The wall of the tunnel is frictionless. If a particle is released in this tunnel, it will execute a simple harmonic motion with a time period:}$ 1 113 JEE MCQ NEW $\frac{2\pi R}{g}$, $\frac{g}{2\pi R}$... 4 Edit Delete
19909 $\text{Point A moves with a uniform speed along the circumference of a circle of radius } 0.36 \text{ m and covers } 30^\circ \text{ in } 0.1 \text{ s.}$ $\text{The perpendicular projection 'P' from 'A' on the diameter MN represents the simple harmonic motion of 'P'.}$ $\text{The restoration force per unit mass when P touches M will be:}$ 1 113 JEE MCQ NEW $100 \text{ N}$, $0.49 \text{ N}$... 4 Edit Delete
19908 $\text{The equation: } Y = A \sin(\omega t + \phi_0) \text{ represents the time-displacement relation of simple harmonic motion (SHM). At } t = 0,$ $\text{the displacement of the particle is } Y = \frac{A}{2}, \text{ and it is moving in the negative } x\text{-direction. The initial phase angle } \phi_0 \text{ is:}$ 1 113 JEE MCQ NEW $\frac{\pi}{6}$, $\frac{\pi}{3}$... 3 Edit Delete
19907 $\text{Two identical springs of spring constant '2k' are attached to a block of mass } m \text{ and to fixed support (see figure).}$ $\text{When the mass is displaced from the equilibrium position on either side, it executes simple harmonic motion.}$ $\text{The time period of oscillation of this system is:}$ 1 113 JEE MCQ NEW $2\pi \sqrt{\frac{m}{k}}$, $\pi \sqrt{\frac{m}{2k}}$... 4 Edit Delete
19906 $\text{If the time period of a } 2 \text{ m long simple pendulum is } 2 \text{ s, the acceleration due to gravity at the place where the pendulum is executing simple harmonic motion is:}$ 1 113 JEE MCQ NEW $\pi^2 \text{ m/s}^2$, $2\pi^2 \text{ m/s}^2$... 2 Edit Delete
19905 $\text{In the given figure, a body of mass } M \text{ is held between two massless springs, on a smooth inclined plane.}$ $\text{The free ends of the springs are attached to firm supports.}$ $\text{If each spring has spring constant } k, \text{ the frequency of oscillation of given body is:}$ 1 113 JEE MCQ NEW $\frac{1}{2\pi} \sqrt{\frac{k}{2M}}$, $\frac{1}{2\pi} \sqrt{\frac{2k}{Mg \sin \alpha}}$... 3 Edit Delete
19904 $\text{In the given figure, mass } M \text{ is attached to a horizontal spring which is fixed on one side to a rigid support.}$ $\text{The spring constant of the spring is } k. \text{ The mass oscillates on a frictionless surface with time period } T \text{ and amplitude } A.$ $\text{When the mass is in an equilibrium position, as shown in the figure, another mass } m \text{ is gently fixed upon it.}$ $\text{The new amplitude of oscillation will be:}$ 1 113 JEE MCQ NEW $A \sqrt{\frac{M-m}{M}}$, $A \sqrt{\frac{M}{M+m}}$... 2 Edit Delete
19903 $\text{When a particle of mass } m \text{ is attached to a vertical spring of spring constant } k \text{ and released, its motion is described by}$ $y(t) = y_0 \sin^2 \omega t, \text{ where 'y' is measured from the lower end of the unstretched spring. Then } \omega \text{ is:}$ 1 113 JEE MCQ NEW $\sqrt{\frac{g}{y_0}}$, $\sqrt{\frac{g}{2y_0}}$... 2 Edit Delete
19902 13 1 113 JEE MCQ NEW 1, 2... 1 Edit Delete
19901 $\text{A ring is hung on a nail. It can oscillate, without slipping or sliding (i) in its plane with a time period } T_1 \text{ and, (ii) back and forth in a direction perpendicular to its plane, with a period } T_2. \text{ The ratio } \frac{T_1}{T_2} \text{ will be:}$ 1 113 JEE MCQ NEW $\frac{2}{\sqrt{3}}$, $\sqrt{\frac{2}{3}}$... 1 Edit Delete
19900 $\text{The displacement-time (} S-t \text{) graph of a particle executing simple harmonic motion (SHM) is provided (the sketch is schematic and not to scale).}$ $\text{Which of the following statements are true for this motion?}$ 1 113 JEE MCQ NEW $\text{(A) The force is zero at } t = \frac{3T}{4}.$, $\text{(B) The acceleration is maximum at } t = T.$... 4 Edit Delete
19899 $\text{Two masses } m \text{ and } \frac{m}{2} \text{ are connected at the two ends of a massless rigid rod of length } l. \text{ The rod is suspended by a thin wire of torsional constant } k \text{ at the center of mass of the rod-mass system (see figure).}$ $\text{Because of the torsional constant } k, \text{ the restoring torque is } \tau = k \theta \text{ for angular displacement } \theta. \text{ If the rod is rotated by } \theta_0 \text{ and released, the tension in it when it passes through its mean position will be:}$ 1 113 JEE MCQ NEW $\frac{3k\theta_0^2}{l}$, $\frac{2k\theta_0^2}{l}$... 3 Edit Delete
19898 $\text{A spring whose unstretched length is } l \text{ has a force constant } k. \text{ The spring is cut into two pieces of unstretched lengths } l_1 \text{ and } l_2 \text{ where, } l_1 = nl_2 \text{ and } n \text{ is an integer. The ratio } k_1/k_2 \text{ of the corresponding force constant, } k_1 \text{ and } k_2 \text{ will be:}$ 1 113 JEE MCQ NEW $\frac{1}{n^2}$, $\frac{1}{n}$... 2 Edit Delete
19897 $\text{A simple pendulum has a time period } T \text{ in air. The bob is then completely immersed and continues to oscillate freely in a non-viscous liquid whose density is } \left( \frac{1}{16} \right) \text{th of that of the bob.}$ $\text{Assuming no damping and only the effect of buoyancy, what is the new time period of oscillation?}$ 1 113 JEE MCQ NEW $2T \sqrt{\frac{1}{14}}$, $2T \sqrt{\frac{1}{10}}$... 3 Edit Delete
19896 $\text{A body of mass } M \text{ and a charge } q \text{ is connected to a spring of spring constant } k. \text{ It oscillates along the } x\text{-direction about its equilibrium position, taken to be at } x = 0, \text{ with an amplitude } A. \text{ An electric field } E \text{ is applied along the } x\text{-direction.}$ $\text{Which of the following statements is correct?}$ 1 113 JEE MCQ NEW $\text{The total energy of the system is } \frac{1}{2} m \omega^2 A^2 + \frac{1}{2} \frac{q^2 E^2}{k}.$, $\text{The new equilibrium position is at a distance } \frac{2qE}{k} \text{ from } x = 0.$... 1 Edit Delete
19895 $\text{A particle executes simple harmonic motion with a time period } T. \text{ It starts at its equilibrium position at } t = 0. \text{ How will the graph of its kinetic energy } (KE) \text{ versus time } (t) \text{ look like?}$ 1 113 JEE MCQ NEW $\begin{array}{c} KE \\ 0 \\ T \\ t \end{array}$, $\begin{array}{c} KE \\ 0 \\ \frac{T}{2} \quad T \\ t \end{array}$... 4 Edit Delete
19894 $\text{A particle performs simple harmonic motion with amplitude } A. \text{ Its speed is tripled at the instant that it is at a distance } \frac{2A}{3} \text{ from the equilibrium position. The new amplitude of the motion is:}$ 1 113 JEE MCQ NEW $\frac{A}{3}\sqrt{41}$, $3A$... 4 Edit Delete
19893 $x \text{ and } y \text{ displacements of a particle are given as } x(t) = a \sin \omega t \text{ and } y(t) = a \sin 2\omega t. \text{ Its trajectory will look like:}$ 1 113 JEE MCQ NEW $\text{Option 1: Graph with two loops along the } y \text{-axis}$, $\text{Option 2: Graph with a single loop along the } y \text{-axis}$... 1 Edit Delete
19892 $\text{A simple harmonic oscillator of angular frequency } 2 \text{ rad s}^{-1} \text{ is acted upon by an external force } F = \sin t \text{ N.}$ $\text{If the oscillator is at rest in its equilibrium at } t = 0, \text{ its position at later times is proportional to:}$ 1 113 JEE MCQ NEW $\cos t - \frac{1}{2} \sin 2t$, $\sin t + \frac{1}{2} \cos 2t$... 4 Edit Delete
19891 $\text{For a simple pendulum, a graph is plotted between its kinetic energy (} KE \text{) and potential energy (} PE \text{) against its displacement } d. \text{ Which one of the following represents these correctly? (graphs are schematic and not drawn to scale)}$ 1 113 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
19890 $\text{A pendulum made of a uniform wire of cross-sectional area } A \text{ has time period } T. \text{ When an additional mass } M \text{ is added to its bob, the time period changes to } T_M. \text{ If the Young's modulus of the material of the wire is } Y \text{ then } \frac{1}{Y} \text{ is equal to:}$ $\left( g = \text{gravitational acceleration} \right)$ 1 113 JEE MCQ NEW $\left( \frac{T_M}{T} \right)^2 - 1 \frac{Mg}{A}$, $1 - \left( \frac{T_M}{T} \right)^2 \frac{A}{Mg}$... 4 Edit Delete
19889 $\text{The temperature of a gas is } -78^\circ \text{C and the average translational kinetic energy of its molecules is } K. \text{ The temperature at which the average translational kinetic energy of the molecules of the same gas becomes } 2K \text{ is}$ 1 112 JEE MCQ NEW $-39^\circ \text{C}$, $127^\circ \text{C}$... 4 Edit Delete
19888 $\text{A mixture of one mole of monoatomic gas and one mole of a diatomic gas (rigid) are kept at room temperature (} 27^\circ \text{C)}.$ $\text{The ratio of specific heat of gases at constant volume respectively is:}$ 1 112 JEE MCQ NEW $\frac{3}{2}$, $\frac{5}{2}$... 3 Edit Delete
19887 $\text{Energy of 10 non rigid diatomic molecules at temperature } T \text{ is:}$ 1 112 JEE MCQ NEW $35 \text{ } k_B T$, $35 \text{ } RT$... 1 Edit Delete
19886 $\text{A sample contains mixture of helium and oxygen gas. The ratio of root mean square speed of helium and oxygen in the sample, is:}$ 1 112 JEE MCQ NEW $\frac{1}{32}$, $\frac{1}{2\sqrt{2}}$... 4 Edit Delete
19885 $\text{The translational degrees of freedom } (f_t) \text{ and rotational degrees of freedom } (f_r) \text{ of } \text{CH}_4 \text{ molecule are –}$ 1 112 JEE MCQ NEW $f_t = 3 \text{ and } f_r = 3$, $f_t = 2 \text{ and } f_r = 3$... 1 Edit Delete
19884 $\text{In a container, 1 g of hydrogen and 1 g of oxygen are taken. Find the ratio of hydrogen pressure to oxygen pressure.}$ 1 112 JEE MCQ NEW $16$, $12$... 1 Edit Delete
19883 $\text{Find the total kinetic energy of 1 mole of oxygen gas at } 27^\circ\text{C.}$ $\left[ \text{Take } R = \frac{25}{3} \text{ J/mol-K} \right]$ 1 112 JEE MCQ NEW 6250 \text{ J}, 3125 \text{ J}... 1 Edit Delete
19882 $\text{The average speed of } \text{N}_2 \text{ at } 27^\circ \text{C is:}$ 1 112 JEE MCQ NEW $476 \text{ m/s}$, $470 \text{ m/s}$... 1 Edit Delete
19881 $\text{The correct order of root mean square speed, } v_{\text{rms}} \text{ for Ne, Cl}_2 \text{ and OF}_6 \text{ at the same temperature is:}$ $1.\ (v_{\text{rms}})_{\text{Ne}} < (v_{\text{rms}})_{\text{Cl}_2} < (v_{\text{rms}})_{\text{OF}_6}$ $2.\ (v_{\text{rms}})_{\text{Cl}_2} < (v_{\text{rms}})_{\text{Ne}} < (v_{\text{rms}})_{\text{OF}_6}$ $3.\ (v_{\text{rms}})_{\text{OF}_6} < (v_{\text{rms}})_{\text{Cl}_2} < (v_{\text{rms}})_{\text{Ne}}$ $4.\ (v_{\text{rms}})_{\text{OF}_6} < (v_{\text{rms}})_{\text{Ne}} < (v_{\text{rms}})_{\text{Cl}_2}$ 1 112 JEE MCQ NEW $(v_{\text{rms}})_{\text{Ne}} < (v_{\text{rms}})_{\text{Cl}_2} < (v_{\text{rms}})_{\text{OF}_6}$, $(v_{\text{rms}})_{\text{Cl}_2} < (v_{\text{rms}})_{\text{Ne}} < (v_{\text{rms}})_{\text{OF}_6}$... 3 Edit Delete
19880 $\text{What would be the ratio of the root mean square speed of oxygen gas molecules to that of hydrogen gas molecules, if the temperature of both the gases are the same?}$ 1 112 JEE MCQ NEW $1 : 4$, $1 : 16$... 1 Edit Delete
19879 $\text{The ratio of temperature in K of hydrogen and oxygen is } 2 : 1. \text{ The ratio of their average kinetic energy per molecule is:}$ 1 112 JEE MCQ NEW $6 : 1$, $1 : 6$... 3 Edit Delete
19878 $\text{If } T \text{ is the temperature of a gas, then RMS velocity of the gas molecules is proportional to:}$ 1 112 JEE MCQ NEW $T^{\frac{1}{2}}$, $T^{-\frac{1}{2}}$... 1 Edit Delete
19877 $\text{The ratio of density of oxygen } (\text{O}_{8}^{16}) \text{ to the density of Helium } (\text{He}_{2}^{4}) \text{ at STP is equal to:}$ 1 112 JEE MCQ NEW $2$, $4$... 4 Edit Delete
19876 $\text{The root mean square speed of smoke particles of mass } 5 \times 10^{-17} \text{ kg}$ $\text{in their Brownian motion in air at NTP is, approximately:}$ $\left[ \text{Given } k = 1.38 \times 10^{-23} \text{ JK}^{-1} \right]$ 1 112 JEE MCQ NEW $60 \text{ mm s}^{-1}$, $12 \text{ mm s}^{-1}$... 3 Edit Delete
19875 $\text{One mole of a monoatomic gas is mixed with three moles of a diatomic gas. If the molecular specific heat of the mixture at constant volume is } \frac{\alpha^2}{4} R \text{ J/mol-K, then the value of } \alpha \text{ will be:}$ $\text{(assume that the given diatomic gas has no vibrational mode)}$ 1 112 JEE MCQ NEW $5$, $4$... 3 Edit Delete
19874 $\text{Following statements are given:}$ $\text{(i) The average kinetic energy of a gas molecule decreases when the temperature is reduced.}$ $\text{(ii) The average kinetic energy of a gas molecule increases with increase in pressure at constant temperature.}$ $\text{(iii) The average kinetic energy of a gas molecule decreases with increases in volume.}$ $\text{(iv) Pressure of a gas increases with increase in temperature at constant pressure.}$ $\text{(v) The volume of gas decreases with increase in temperature.}$ $\text{Choose the correct answer from the options given below:}$ 1 112 JEE MCQ NEW $\text{(i) and (iv) only}$, $\text{(i), (ii) and (iv) only}$... 1 Edit Delete
19873 $\text{A vessel contains } 16 \text{ g of hydrogen and } 128 \text{ g of oxygen at standard temperature and pressure. The volume of the vessel in } \text{cm}^3 \text{ is:}$ 1 112 JEE MCQ NEW $72 \times 10^5$, $32 \times 10^5$... 3 Edit Delete
19872 $\text{What will be the effect on the root mean square velocity of oxygen molecules if the temperature is doubled and the oxygen molecule dissociates into atomic oxygen?}$ 1 112 JEE MCQ NEW $\text{The velocity of atomic oxygen remains the same.}$, $\text{The velocity of atomic oxygen doubles.}$... 2 Edit Delete
19871 $\text{The total internal energy of two moles of a monoatomic ideal gas at temperature } T = 300 \text{ K will be:}$ $\text{(Given: } R = 8.31 \text{ J/mol.K)}$ 1 112 JEE MCQ NEW $4789 \text{ J}$, $7479 \text{ J}$... 2 Edit Delete
19870 $\text{For a perfect gas, two pressures } P_1 \text{ and } P_2 \text{ are shown in the figure.}$ $\text{The graph shows:}$ 1 112 JEE MCQ NEW $P_1 > P_2$, $P_1 < P_2$... 1 Edit Delete
19869 $\text{A flask contains argon and oxygen in the ratio of } 3 : 2 \text{ in mass and the mixture is kept at } 27^\circ \text{C. The ratio of their average kinetic energy per molecule respectively will be:}$ 1 112 JEE MCQ NEW $3 : 2$, $9 : 4$... 4 Edit Delete
19868 $\text{The ratio of specific heats } \left( \frac{C_p}{C_v} \right) \text{ in terms of degree of freedom } (f) \text{ is given by:}$ 1 112 JEE MCQ NEW $\left( 1 + \frac{f}{3} \right)$, $\left( 1 + \frac{2}{f} \right)$... 2 Edit Delete
19867 $\text{The relation between root mean square speed (} v_{\text{rms}} \text{) and most probable speed (} v_{\text{p}} \text{) for the molar mass M of oxygen gas molecule at the temperature of 300 K will be:}$ 1 112 JEE MCQ NEW $v_{\text{rms}} = \sqrt{\frac{2}{3}} v_{\text{p}}$, $v_{\text{rms}} = \sqrt{\frac{3}{2}} v_{\text{p}}$... 2 Edit Delete
19866 $\text{Given below are two statements:}$ $\text{Statement I:}$ $\text{In a diatomic molecule, the rotational energy at a given temperature obeys Maxwell's distribution.}$ $\text{Statement II:}$ $\text{In a diatomic molecule, the rotational energy at a given temperature equals the translational kinetic energy for each molecule.}$ $\text{In the light of the above statements, choose the correct answer from the options given below:}$ 1 112 JEE MCQ NEW $\text{Statement I is false but Statement II is true.}$, $\text{Both Statement I and Statement II are false.}$... 4 Edit Delete
19865 $\text{On the basis of kinetic theory of gases, the gas exerts pressure because its molecules:}$ 1 112 JEE MCQ NEW $\text{continuously lose their energy till it reaches wall.}$, $\text{are attracted by the walls of container.}$... 4 Edit Delete
19864 $\text{If the ratio of the number density per cm}^3 \text{ of the two gases is } 5 : 3$ $\text{and the ratio of the diameters of the molecules of the two gases is } 4 : 5,$ $\text{then, the ratio of the mean free path of molecules of two gases is:}$ 1 112 JEE MCQ NEW $\frac{16}{15}$, $\frac{15}{16}$... 2 Edit Delete
19863 $\text{Number of molecules in a volume of } 4 \text{ cm}^3 \text{ of a perfect monoatomic gas at some temperature } T \text{ and at a pressure of } 2 \text{ cm of mercury is close to } ?$ $\text{(Given, mean kinetic energy of a molecule (at } T) \text{ is } 4 \times 10^{-14} \text{ erg, } g = 980 \text{ cm/s}^2, \text{ density of mercury } = 13.6 \text{ g/cm}^3 )$ 1 112 JEE MCQ NEW $5.8 \times 10^{18}$, $5.8 \times 10^{16}$... 3 Edit Delete
19862 $\text{If } 10^{22} \text{ gas molecules each of mass } 10^{-22} \text{ kg collide with a surface (perpendicular to it) elastically per second over an area } 1 \text{ m}^2 \text{ with a speed } 10^4 \text{ m/s, the pressure exerted by the gas molecules will be of the order of:}$ 1 112 JEE MCQ NEW $10^8 \text{ N/m}^2$, $10^4 \text{ N/m}^2$... 2 Edit Delete
19861 $\text{Two moles of helium are mixed with } n \text{ moles of hydrogen. If } \frac{c_p}{c_v} = \frac{3}{2} \text{ for the mixture then, the value of } n \text{ is:}$ 1 112 JEE MCQ NEW $1$, $3$... 3 Edit Delete
19860 $\text{An ideal gas has molecules with } 5 \text{ degrees of freedom. The ratio of specific heats at constant pressure } C_P \text{ and at constant volume } C_V \text{ is:}$ 1 112 JEE MCQ NEW $\frac{7}{2}$, $\frac{7}{5}$... 2 Edit Delete
19859 $\text{Using equipartition of energy, the specific heat (in J kg}^{-1}\text{K}^{-1}\text{) of aluminum at room temperature can be estimated to be:}$ $\text{(atomic weight of aluminum=27)}$ 1 112 JEE MCQ NEW $410$, $25$... 4 Edit Delete
19858 $N$ \text{ moles of non-linear polyatomic gas (degree of freedom } \delta) \text{ is mixed with } 2 \text{ moles of monoatomic gas. The resultant mixture has molar-specific heat equal to that of a diatomic gas, then the number of moles } (N) \text{ is:}$ 1 112 JEE MCQ NEW $4$, $5$... 1 Edit Delete
19857 $\text{In a mixture, } 0.5 \text{ moles of } \text{O}_2 \text{ and } 4 \text{ moles of } \text{Ne} \text{ gas are taken at temperature } T. \text{ The internal energy of the system is equal to:}$ 1 112 JEE MCQ NEW $\left( \frac{13}{2} \right) RT$, $\left( \frac{11}{4} \right) RT$... 3 Edit Delete
19856 $\text{In a lake of depth } 40 \text{ m a bubble is at the bottom. Assuming the temperature and density of lake water to be uniform. What will be the density of air in the bubble?}$ $\text{(assume temperature } T = 12^\circ \text{C and density water } = 10^3 \text{ kg/m}^3, \text{ molecular weight of water } = 30 \text{ g})$ 1 112 JEE MCQ NEW $16.76 \text{ kg/m}^3$, $15.32 \text{ kg/m}^3$... 3 Edit Delete
19855 $\text{What is the molar-specific heat capacity of a diatomic gas in an isochoric process if it has an additional vibrational mode?}$ 1 112 JEE MCQ NEW $\frac{5}{2}R$, $\frac{3}{2}R$... 3 Edit Delete
19854 $\text{Given below are two statements:}$ $\text{Statement I: The average momentum of a molecule in a sample of an ideal gas depends on temperature.}$ $\text{Statement II: The RMS speed of oxygen molecules in a gas is } v. \text{ If the temperature is doubled and the oxygen molecules dissociate into oxygen atoms, the RMS speed will become } 2v.$ 1 112 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 4 Edit Delete
19853 $\text{Which of the following statements about degrees of freedom are correct?}$ $\text{(A) A molecule with } n \text{ degrees of freedom has } n^2 \text{ different ways of storing energy.}$ $\text{(B) Each degree of freedom is associated with an average energy of } \frac{1}{2}RT \text{ per mole.}$ $\text{(C) A monoatomic gas molecule has 1 rotational degree of freedom whereas a diatomic molecule has 2 rotational degrees of freedom.}$ $\text{(D) } CH_4 \text{ has a total of 6 degrees of freedom.}$ 1 112 JEE MCQ NEW $(\text{B and C only})$, $(\text{B and D only})$... 2 Edit Delete
19852 $\text{Same gas is filled in two vessels of the same volume at the same temperature. If the ratio of the number of molecules is } 1 : 4, \text{ then:}$ 1 112 JEE MCQ NEW $\text{(A) The RMS velocity of gas molecules in two vessels will be the same.}$, $\text{(B) The ratio of pressure in these vessels will be } 1 : 4$... 3 Edit Delete
19851 $\text{A gas has } n \text{ degrees of freedom. The ratio of the specific heat of the gas at constant volume to the specific heat of the gas at constant pressure will be:}$ 1 112 JEE MCQ NEW $\frac{n}{n+2}$, $\frac{n+2}{n}$... 1 Edit Delete
19850 $\text{According to the kinetic theory of gases,}$ $\text{(A) the motion of the gas molecules freezes at } 0^\circ\text{C.}$ $\text{(B) the mean free path of gas molecules decreases if the density of molecules is increased.}$ $\text{(C) the mean free path of gas molecules increases if the temperature is increased keeping the pressure constant.}$ $\text{(D) average kinetic energy per molecule per degree of freedom is } \frac{3}{2} k_B T \text{ (for monoatomic gases).}$ $\text{Choose the most appropriate answer from the options given below:}$ 1 112 JEE MCQ NEW $\text{(A) and (C) only}$, $\text{(B) and (C) only}$... 2 Edit Delete
19849 $\text{A mixture of hydrogen and oxygen has a volume of } 2000 \ \text{cm}^3, \text{ temperature } 300 \ \text{K}, \text{ pressure } 100 \ \text{kPa and mass } 0.76 \ \text{g.}$ $\text{The ratio of the number of moles of hydrogen to the number of moles of oxygen in the mixture will be:}$ 1 112 JEE MCQ NEW $\frac{1}{3}$, $3 \colon 1$... 2 Edit Delete
19848 $\text{The internal energy } (U), \text{ pressure } (P), \text{ and volume } (V) \text{ of an ideal gas are related as } U = 3PV + 4. \text{ The gas is:}$ 1 112 JEE MCQ NEW $\text{Diatomic only}$, $\text{Polyatomic only}$... 2 Edit Delete
19847 $\text{The root mean square speed of molecules of a given mass of a gas at } 27^\circ\text{C and } 1 \text{ atm is } 200 \text{ m/s.}$ $\text{The root mean square speed of molecules of the gas at } 127^\circ\text{C and } 2 \text{ atm will be:}$ 1 112 JEE MCQ NEW $\frac{200}{\sqrt{3}} \text{ m/s}$, $\frac{200}{\sqrt{5}} \text{ m/s}$... 3 Edit Delete
19846 $\text{Initially, a gas of diatomic molecules is contained in a cylinder of volume } V_1 \text{ at a pressure } P_1 \text{ and temperature } 250 \text{ K.}$ $\text{Assume that } 25\% \text{ of the molecules get dissociated, causing a change in the number of moles.}$ $\text{The pressure of the resulting gas at temperature } 2000 \text{ K, when contained in a volume } 2V_1 \text{ is given by } P_2. \text{ The ratio } \frac{P_2}{P_1} \text{ is:}$ 1 112 JEE MCQ NEW $2$, $3$... 3 Edit Delete
19845 $\text{Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom. The gas is maintained at a temperature of } T. \text{ The total internal energy, } U \text{ of a mole of this gas, and the value of } \gamma \left( = \frac{C_P}{C_V} \right) \text{ are, respectively:}$ 1 112 JEE MCQ NEW $U = 5RT \text{ and } \gamma = \frac{7}{5}$, $U = \frac{5}{2}RT \text{ and } \gamma = \frac{6}{5}$... 4 Edit Delete
19844 $\text{Nitrogen gas is at a certain temperature } 300^\circ\text{C. At what temperature (in Kelvin) will the root mean square (rms) speed of a hydrogen molecule be equal to the rms speed of a nitrogen molecule?}$ $\text{(Given: molar mass of nitrogen molecule is } 28 \text{ g/mol and molar mass of hydrogen molecule is } 2 \text{ g/mol)}$ 1 112 JEE MCQ NEW $21 \text{ K}$, $41 \text{ K}$... 2 Edit Delete
19843 $\text{Match the } \frac{C_P}{C_V} \text{ ratio for ideal gases with different type of molecules:}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{(A) Monatomic} & \text{(I) } \frac{7}{5} \\ \text{(B) Diatomic rigid molecules} & \text{(II) } \frac{9}{7} \\ \text{(C) Diatomic non-rigid molecules} & \text{(III) } \frac{4}{3} \\ \text{(D) Triatomic rigid molecules} & \text{(IV) } \frac{5}{3} \\ \hline \end{array}$ 1 112 JEE MCQ NEW $(\text{A}-(\text{III}), \text{B}-(\text{IV}), \text{C}-(\text{II}), \text{D}-(\text{I}))$, $(\text{A}-(\text{I}), \text{B}-(\text{III}), \text{C}-(\text{I}), \text{D}-(\text{IV}))$... 4 Edit Delete
19842 $\text{To raise the temperature of a certain mass of gas by } 50^\circ \text{C at a constant pressure, } 160 \text{ calories of heat is required.}$ $\text{When the same mass of gas is cooled by } 100^\circ \text{C at constant volume, } 240 \text{ calories of heat is released.}$ $\text{How many degrees of freedom does each molecule of this gas have (assume the gas to be ideal)?}$ 1 112 JEE MCQ NEW $2$, $5$... 3 Edit Delete
19841 $\text{Consider a gas of triatomic molecules. The molecules are assumed to be triangular, composed of massless rigid rods with atoms at the vertices. The internal energy of a mole of the gas at temperature } T \text{ is:}$ 1 112 JEE MCQ NEW $3RT$, $\frac{5}{2}RT$... 1 Edit Delete
19840 $\text{An ideal gas is confined in a closed container and slowly heated. As the temperature rises, which of the following statements are correct?}$ $\text{(A) The mean free path of gas molecules decreases.}$ $\text{(B) The mean collision time between the molecules decreases.}$ $\text{(C) The mean free path remains unchanged.}$ $\text{(D) The mean collision time remains unchanged.}$ $\text{Choose the correct option from the given ones:}$ 1 112 JEE MCQ NEW $\text{(C) and (D) only}$, $\text{(A) and (B) only}$... 4 Edit Delete
19839 $\text{A gas mixture consists of } 3 \text{ moles of oxygen and } 5 \text{ moles of argon at temperature } T. \text{ Assuming the gases to be ideal and the oxygen bond to be rigid, the total internal energy (in units of } RT) \text{ of the mixture is:}$ $1.\ 11$ $2.\ 15$ $3.\ 20$ $4.\ 13$ 1 112 JEE MCQ NEW $11$, $15$... 2 Edit Delete
19838 $\text{One mole of an ideal gas undergoes a process in which pressure and volume are related by the equation:}$ $P = P_0 \left[ 1 - \frac{1}{2} \left( \frac{V_0}{V} \right)^2 \right]$ $\text{where } P_0 \text{ and } V_0 \text{ are constants. If the volume of the gas increases from } V = V_0 \text{ to } V = 2V_0, \text{ what is the resulting change in temperature?}$ 1 112 JEE MCQ NEW $\frac{3}{4} \frac{P_0 V_0}{R}$, $\frac{1}{2} \frac{R}{P_0 V_0}$... 3 Edit Delete
19837 $\text{An HCl molecule has rotational, translational and vibrational motions.}$ $\text{If the rms velocity of HCl molecules in its gaseous phase is } \vec{v}, m \text{ is its}$ $\text{mass and } k_B \text{ is Boltzmann constant, then its temperature will be:}$ 1 112 JEE MCQ NEW $\frac{mv^2}{7k_B}$, $\frac{mv^2}{6k_B}$... 4 Edit Delete
19836 $\text{For a given at 1 atm pressure, the rms speed of the molecules is } 200 \text{ m/s at } 127^\circ\text{C.}$ $\text{At 2 atm pressure and at } 227^\circ\text{C, the rms speed of the molecules will be:}$ 1 112 JEE MCQ NEW $100 \text{ m/s}$, $80\sqrt{5} \text{ m/s}$... 3 Edit Delete
19835 $\text{The temperature of an open room of volume } 30 \text{ m}^3 \text{ increases from } 17^\circ\text{C to } 27^\circ\text{C due to the sunshine.}$ $\text{The atmospheric pressure in the room remains } 1 \times 10^5 \text{ Pa.}$ $\text{In } n_i \text{ and } n_f \text{ are the number of molecules in the room before and after heating, the } n_f-n_i \text{ will be:}$ 1 112 JEE MCQ NEW $-1.61 \times 10^{23}$, $1.38 \times 10^{23}$... 4 Edit Delete
19834 $\text{In an ideal gas at a temperature } T, \text{ the average force that a molecule applies on the walls of a closed container depends on } T \text{ as } T^q. \text{ A good estimate for } q \text{ is}$ 1 112 JEE MCQ NEW $\frac{1}{4}$, $2$... 4 Edit Delete
19833 86 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19832 85 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19831 84 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19830 83 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19829 82 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19828 81 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19827 80 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19826 79 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19825 78 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19824 77 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19823 76 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19822 75 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19821 74 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19820 73 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19819 72 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19818 71 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19817 70 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19816 69 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19815 68 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19814 67 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19813 66 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19812 65 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19811 64 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19810 63 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19809 62 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19808 61 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19807 60 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19806 59 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19805 58 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19804 57 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19803 56 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19802 55 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19801 54 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19800 53 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19799 52 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19798 51 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19797 50 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19795 48 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19791 44 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19790 43 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19789 42 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19788 41 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19786 39 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19785 38 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19784 37 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19783 36 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19781 34 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19780 33 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19779 32 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19777 30 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19775 28 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19770 23 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19764 17 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19763 16 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19760 13 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
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19750 3 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19749 2 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19748 1 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19747 $\text{A real gas within a closed chamber at } 27^\circ \text{C undergoes the cyclic process as shown in figure.}$ $\text{The gas obeys } PV^3 = RT \text{ equation for the path A to B.}$ $\text{The net work done in the complete cycle is (assuming } R = 8 \text{ J/molK)}$ 1 111 JEE MCQ NEW $-20 \text{ J}$, $205 \text{ J}$... 2 Edit Delete
19746 $\text{A sample of 1 mole gas at temperature } T \text{ is adiabatically expanded to double its volume.}$ $\text{If adiabatic constant for the gas is } \gamma = \frac{3}{2}, \text{ then the work done by the gas in the process is:}$ 1 111 JEE MCQ NEW $RT \left[ 2 - \sqrt{2} \right]$, $RT \left[ 2 + \sqrt{2} \right]$... 1 Edit Delete
19745 $\text{The volume of an ideal gas } (\gamma = 1.5) \text{ is changed adiabatically from } 5 \text{ litres to } 4 \text{ litres. The ratio of initial pressure to final pressure is:}$ 1 111 JEE MCQ NEW $\frac{4}{5}$, $\frac{8}{5\sqrt{5}}$... 2 Edit Delete
19744 $\text{A total of } 48 \text{ J heat is given to one mole of helium kept in a cylinder.}$ $\text{The temperature of helium increases by } 2^\circ \text{C. The work done by the gas is:}$ $\text{(Given: } R = 8.31 \text{ Jk}^{-1} \text{mol}^{-1})$ 1 111 JEE MCQ NEW $48 \text{ J}$, $23.1 \text{ J}$... 2 Edit Delete
19743 $\text{The specific heat at constant pressure of a real gas obeying}$ $PV^2 = RT$ $\text{equation is:}$ 1 111 JEE MCQ NEW $\frac{R}{3} + C_v$, $R$... 4 Edit Delete
19742 $\text{A sample of gas at temperature } T \text{ is adiabatically expanded to double its volume.}$ $\text{Adiabatic constant for the gas is } \gamma = \frac{3}{2}. \text{ The work done by the gas in the process is: } (\mu = 1 \text{ mole})$ 1 111 JEE MCQ NEW $RT[1 - 2\sqrt{2}]$, $RT[2\sqrt{2} - 1]$... 4 Edit Delete
19741 80 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19740 $\text{If Carnot engines work between the freezing point and boiling point of water, then the efficiency of a Carnot engine is:}$ $1.\ 35\%$ $2.\ 27\%$ $3.\ 22\%$ $4.\ 17\%$ 1 111 JEE MCQ NEW $35\%$, $27\%$... 2 Edit Delete
19739 $\text{In which of the following processes does the internal energy of a gas remain constant?}$ $1. \text{Isothermal}$ $2. \text{Isochoric}$ $3. \text{Isobaric}$ $4. \text{Adiabatic}$ 1 111 JEE MCQ NEW $\text{Isothermal}$, $\text{Isochoric}$... 1 Edit Delete
19738 $\text{A gas is compressed adiabatically. Which of the following statements is not correct?}$ 1 111 JEE MCQ NEW $\text{Internal energy is constant}$, $\text{Temperature increases}$... 1 Edit Delete
19737 $\text{A monoatomic gas initially at pressure } P \text{ and volume } V \text{ is compressed to } \left( \frac{1}{8} \right) \text{th of its volume adiabatically. The final pressure of the gas is:}$ 1 111 JEE MCQ NEW $4P$, $8P$... 4 Edit Delete
19736 $\text{A Carnot engine operates between temperatures of } 27^\circ\text{C and } 127^\circ\text{C}$ $\text{and performs } 2 \text{ kJ of work. The amount of heat energy rejected is:}$ 1 111 JEE MCQ NEW $4 \text{ kJ}$, $6 \text{ kJ}$... 2 Edit Delete
19735 $\text{When the amount of heat supplied to a gas in a system is equal to } 1000 \text{ J, the system in return does } 200 \text{ J of work on the surrounding.}$ $\text{What would be the change in the internal energy of the gas?}$ 1 111 JEE MCQ NEW $800 \text{ J}$, $1200 \text{ J}$... 1 Edit Delete
19734 $\text{For a heat engine based on the Carnot cycle source is at a temperature } 600 \text{ K.}$ $\text{Now if source temperature is doubled then efficiency also gets doubled while keeping the sink temperature same at } x \text{ K.}$ $\text{The value of } x \text{ is equal to:}$ 1 111 JEE MCQ NEW $400$, $600$... 1 Edit Delete
19733 72 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19732 $\text{During an adiabatic process performed on a diatomic gas, } 725 \text{ J of work is done on the gas. The change in internal energy of the gas is equal to:}$ 1 111 JEE MCQ NEW $495 \text{ J}$, $725 \text{ J}$... 2 Edit Delete
19731 70 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19730 $\text{The initial volume of 1 mole of a monoatomic gas is } 2 \text{ litres.}$ $\text{It is expanded isothermally to a volume of } 6 \text{ litres.}$ $\text{Change in internal energy of the gas is:}$ 1 111 JEE MCQ NEW $2R$, $4R$... 4 Edit Delete
19729 $\text{The pressure } P_1 \text{ and density } d_1 \text{ of diatomic gas } \left( \gamma = \frac{7}{5} \right) \text{ change suddenly to } P_2 ( > P_1) \text{ and } d_2 \text{ respectively during an adiabatic process.}$ $\text{The temperature of the gas increases and becomes:}$ $\left( \text{given } \frac{d_2}{d_1} = 32 \right)$ 1 111 JEE MCQ NEW $2 \text{ times its initial temperature.}$, $4 \text{ times its initial temperature.}$... 2 Edit Delete
19728 67 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19727 66 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19726 $7 \text{ mole of a certain monoatomic ideal gas undergoes a temperature increase of } 40 \text{ K at constant pressure. The increase in the internal energy of the gas in this process is:}$ $\text{(Given: } R = 8.3 \text{ J-K}^{-1}\text{mol}^{-1}\text{)}$ 1 111 JEE MCQ NEW $5810 \text{ J}$, $3486 \text{ J}$... 2 Edit Delete
19725 $\text{A certain amount of gas of volume } V \text{ at } 27^\circ C \text{ temperature and}$ $\text{pressure } 2 \times 10^7 \text{ Nm}^{-2} \text{ expands isothermally until its volume gets}$ $\text{doubled. Later, it expands adiabatically until its volume gets}$ $\text{redoubled. The final pressure of the gas will be: (Use } \gamma = 1.5)$ 1 111 JEE MCQ NEW $3.536 \times 10^5 \text{ Pa}$, $3.536 \times 10^6 \text{ Pa}$... 2 Edit Delete
19724 $\text{A diatomic gas } (\gamma = 1.4) \text{ does } 400 \text{ J of work when it is expanded isobarically.}$ $\text{The heat given to the gas in the process is:}$ 1 111 JEE MCQ NEW $1000 \text{ J}$, $1200 \text{ J}$... 3 Edit Delete
19723 $\text{In a Carnot engine, the temperature of the reservoir is } 527^\circ \text{C and that of the sink is } 200 \text{ K.}$ $\text{If the work done by the engine when it transfers heat from the reservoir to sink is } 12000 \text{ kJ, the quantity of heat absorbed by the engine from the reservoir is:}$ 1 111 JEE MCQ NEW $12 \times 10^6 \text{ J}$, $14 \times 10^6 \text{ J}$... 3 Edit Delete
19722 $\text{A Carnot engine takes } 5000 \text{ kcal of heat from a reservoir at } 727^\circ\text{C}$ $\text{and gives heat to a sink at } 127^\circ\text{C. The work done by the engine is:}$ 1 111 JEE MCQ NEW $3 \times 10^6 \text{ J}$, $\text{zero}$... 3 Edit Delete
19721 $\text{A balloon filled with helium (32}^\circ \text{C and 1.7 atm) bursts. Immediately afterwards the expansion of helium can be considered as:}$ 1 111 JEE MCQ NEW $\text{irreversible adiabatic}$, $\text{reversible adiabatic}$... 1 Edit Delete
19720 $\text{A diatomic gas with rigid molecules undergoes expansion at constant pressure, performing } 10 \text{ J of work in the process. What is the amount of heat energy absorbed by the gas during this process?}$ 1 111 JEE MCQ NEW $35 \text{ J}$, $40 \text{ J}$... 1 Edit Delete
19719 $\text{Two moles of helium gas are mixed with three moles of hydrogen molecules (taken to be rigid). What is the molar specific heat of the mixture at constant volume?}$ $\left( R = 8.3 \text{ J/mol K} \right)$ 1 111 JEE MCQ NEW $21.6 \text{ J/mol K}$, $19.7 \text{ J/mol K}$... 4 Edit Delete
19718 $\text{When heat } Q \text{ is supplied to a diatomic gas of rigid molecules, at constant volume its temperature increases by } \Delta T. \text{ The heat required to produce the same change in temperature, at a constant pressure is:}$ 1 111 JEE MCQ NEW $\frac{7}{5}Q$, $\frac{3}{2}Q$... 1 Edit Delete
19717 $\text{A cylinder with fixed capacity of } 67.2 \text{ litres contains helium gas at STP. The amount of heat needed to raise the temperature of the gas by } 20^\circ C \text{ is: [Given that } R = 8.31 \text{ J mol}^{-1}\text{K}^{-1}]$ 1 111 JEE MCQ NEW $748 \text{ J}$, $350 \text{ J}$... 1 Edit Delete
19716 $\text{The given diagram shows four processes i.e., isochoric, isobaric, isothermal and adiabatic.}$ $\text{The correct assignment of the processes, in the same order, is given by:}$ 1 111 JEE MCQ NEW $d,\ a,\ b,\ c$, $a,\ d,\ c,\ b$... 1 Edit Delete
19715 54 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19714 $\text{One mole of an ideal monatomic gas is compressed isothermally in a rigid vessel to double its pressure at room temperature } 27^\circ \text{C. The work done on the gas will be:}$ 1 111 JEE MCQ NEW $300R$, $300R \ln(2)$... 2 Edit Delete
19713 52 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19712 $\text{An engine operates by taking } n \text{ moles of an ideal gas through the cycle } ABCDA \text{ shown in the figure. The thermal efficiency of the engine is:}$ $\text{(Take } C_v = 1.5R, \text{ where } R \text{ is gas constant)}$ 1 111 JEE MCQ NEW 0.32, 0.15... 2 Edit Delete
19711 $\text{An experiment takes 10 minutes to raise the temperature of water in a container from } 0^\circ \text{C to } 100^\circ \text{C and another 55 minutes to convert it totally into steam by a heater supplying heat at a uniform rate. Neglecting the specific heat of the container and taking the specific heat of the water to be } 1 \text{ cal/g}^\circ \text{C, the heat of vaporization according to this experiment will come out to be:}$ 1 111 JEE MCQ NEW $560 \text{ cal/g}$, $550 \text{ cal/g}$... 2 Edit Delete
19710 $\text{A gas undergoes a cyclic-process } ABC A \text{ as shown in the figure.}$ $\text{Then the work done by the gas for } A \rightarrow B \rightarrow C \text{ is:}$ 1 111 JEE MCQ NEW $1800 \text{ J}$, $1200 \text{ J}$... 2 Edit Delete
19709 $\text{Given a cyclic process shown in an indicator diagram using SI units.}$ $\text{The work done by the gas during the process is:}$ 1 111 JEE MCQ NEW $300 \text{ units}$, $-300 \text{ units}$... 1 Edit Delete
19708 $\text{A mixture of gases with adiabatic coefficient equal to } \frac{3}{2} \text{ is compressed from initial state } (P_0, V_0) \text{ to one fourth volume adiabatically. Its final pressure will be equal to}$ $1. \ P_0$ $2. \ 2P_0$ $3. \ 4P_0$ $4. \ 8P_0$ 1 111 JEE MCQ NEW $P_0$, $2P_0$... 4 Edit Delete
19707 46 1 111 JEE MCQ NEW 1, 2... 1 Edit Delete
19706 $\text{A diatomic gas is taken from point } A \text{ to point } B \text{ in a thermodynamic}$ $\text{process as described in the pressure-volume graph shown. The change in}$ $\text{internal energy is equal to:}$ 1 111 JEE MCQ NEW $3.75 \times 10^6 \text{ J}$, $2.25 \times 10^6 \text{ J}$... 1 Edit Delete
19705 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):}$ $\text{Assertion (A):}$ $\text{At a sink temperature of } -273^\circ \text{C, the efficiency of a Carnot engine will be 1.}$ $\text{Reason (R):}$ $\eta = 1 - \frac{T_{\text{sink}}}{T_{\text{source}}}$ $\text{In the light of the above statements choose the correct answer from the options given below:}$ 1 111 JEE MCQ NEW $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19704 $\text{For a system undergoing an isothermal process, heat energy is supplied to the system. Then,}$ $\text{I. Internal energy will increase.}$ $\text{II. Internal energy will decrease.}$ $\text{III. Work done by the system is positive.}$ $\text{IV. Work done by the system is negative.}$ $\text{V. Internal energy remains constant.}$ $\text{Choose the correct option from the given ones:}$ 1 111 JEE MCQ NEW $\text{(I), (III), and (V) only}$, $\text{(II) and (IV) only}$... 3 Edit Delete
19703 $\text{An ideal gas undergoes a thermodynamic process following the relation } PT^2 = \text{ constant. Assuming symbols have their usual meaning, then the volume expansion coefficient of the gas is equal to:}$ 1 111 JEE MCQ NEW $\frac{2}{T^3}$, $\frac{3}{T}$... 2 Edit Delete
19702 $\text{In an isochoric process on an ideal gas, initial temperature is equal to } 27^\circ \text{C with an initial pressure being equal to } 270 \text{ kPa.}$ $\text{Now if the final temperature is made equal to } 36^\circ \text{C then the final pressure is equal to:}$ 1 111 JEE MCQ NEW $298 \text{ kPa}$, $270 \text{ kPa}$... 4 Edit Delete
19701 $\text{Match Column-I with Column-II and select the correct option.}$ $\begin{array}{|c|c|} \hline \text{Column-I} & \text{Column-II} \\ \hline \text{P. Adiabatic process} & \text{A. no work done by or on gas} \\ \text{Q. Isochoric process} & \text{B. some amount of heat given is converted into internal energy} \\ \text{R. Isobaric process} & \text{C. no heat exchange} \\ \text{S. Isothermal process} & \text{D. no change in internal energy} \\ \hline \end{array}$ 1 111 JEE MCQ NEW $\text{P} \rightarrow \text{A}, \text{Q} \rightarrow \text{B}, \text{R} \rightarrow \text{C}, \text{S} \rightarrow \text{D}$, $\text{P} \rightarrow \text{A}, \text{Q} \rightarrow \text{C}, \text{R} \rightarrow \text{D}, \text{S} \rightarrow \text{B}$... 3 Edit Delete
19700 $\text{In the series sequence of two engines } E_1 \text{ and } E_2 \text{ as shown.}$ $T_1 = 600 \text{ K and } T_2 = 300 \text{ K.}$ $\text{It is given that both the engines working on the Carnot principle have the same efficiency, then temperature } T \text{ at which exhaust of } E_1 \text{ is fed into } E_2 \text{ is equal to:}$ 1 111 JEE MCQ NEW $300\sqrt{2} \text{ K}$, $200\sqrt{2} \text{ K}$... 1 Edit Delete
19699 $\text{A Carnot engine working between a source and a sink at } 200 \text{ K has an efficiency of } 50\%. \text{ Another Carnot engine working between the same source and another sink with an unknown temperature } T \text{ has an efficiency of } 75\%. \text{ The value of } T \text{ is equal to:}$ 1 111 JEE MCQ NEW $400 \text{ K}$, $300 \text{ K}$... 4 Edit Delete
19698 $\text{A thermodynamic system is taken from an original state } D \text{ to an}$ $\text{intermediate state } E \text{ by a linear process, as shown in the figure. Its}$ $\text{volume is then reduced to the original volume from } E \text{ to } F \text{ by an}$ $\text{isobaric process. The total work done by the gas from } D \text{ to } E \text{ to } F$ $\text{will be:}$ 1 111 JEE MCQ NEW $-450 \text{ J}$, $450 \text{ J}$... 2 Edit Delete
19697 $\text{In 1}^{\text{st}} \text{ case, Carnot engine operates between temperatures 300 K and 100 K.}$ $\text{In 2}^{\text{nd}} \text{ case, as shown in the figure, a combination of two engines is used.}$ $\text{The efficiency of this combination (in 2}^{\text{nd}} \text{ case) will be:}$ 1 111 JEE MCQ NEW $\text{same as the 1}^{\text{st}} \text{ case.}$, $\text{always greater than the 1}^{\text{st}} \text{ case.}$... 3 Edit Delete
19696 $\text{Let } \eta_1 \text{ is the efficiency of an engine at } T_1 = 447 \, ^\circ\text{C} \text{ and } T_2 = 147 \, ^\circ\text{C} \text{ while } \eta_2 \text{ is the efficiency at } T_1 = 947 \, ^\circ\text{C} \text{ and } T_2 = 47 \, ^\circ\text{C} . \text{ The ratio } \frac{\eta_1}{\eta_2} \text{ will be:}$ 1 111 JEE MCQ NEW $0.41$, $0.56$... 2 Edit Delete
19695 $\text{Starting with the same initial conditions, an ideal gas expands from volume } V_1 \text{ to } V_2 \text{ in three different ways. The work done by the gas is } W_1 \text{ if the process is purely isothermal, } W_2 \text{ if the process is purely adiabatic and } W_3 \text{ if the process is purely isobaric. Then,}$ 1 111 JEE MCQ NEW $W_1 < W_2 < W_3$, $W_2 < W_3 < W_1$... 4 Edit Delete
19694 $300$ \text{ calories of heat is given to a heat engine and it rejects } 225 \text{ calories of heat. If source temperature is } 227^\circ \text{C, then the temperature of sink will be:}$ $1. \ 102^\circ \text{C}$ $2. \ 90^\circ \text{C}$ $3. \ 110^\circ \text{C}$ $4. \ 120^\circ \text{C}$ 1 111 JEE MCQ NEW $102^\circ \text{C}$, $90^\circ \text{C}$... 1 Edit Delete
19693 $\text{A cylinder of a fixed capacity of } 44.8 \text{ litres contains helium gas at standard temperature and pressure. The amount of heat needed to raise the temperature of the gas in the cylinder by } 20.0^{\circ}\text{C will be:}$ $\text{(Given: gas constant } R = 8.3 \text{ JK}^{-1}\text{mol}^{-1})$ 1 111 JEE MCQ NEW $249 \text{ J}$, $415 \text{ J}$... 3 Edit Delete
19692 $\text{A sample of an ideal gas is taken through the cyclic process } ABC A \text{ as shown in the figure.}$ $\text{It absorbs, } 40 \text{ J of heat during part } AB, \text{ no heat during } BC, \text{ and rejects } 60 \text{ J of heat during } CA.$ $\text{A work of } 50 \text{ J is done on the gas during part } BC. \text{The internal energy of the gas at } A \text{ is } 1560 \text{ J.}$ $\text{The work done by the gas during the part } CA \text{ is:}$ 1 111 JEE MCQ NEW $20 \text{ J}$, $30 \text{ J}$... 2 Edit Delete
19691 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{When } \mu \text{ amount of an ideal gas undergoes adiabatic}$ $\text{change from state } (P_1, V_1, T_1) \text{ to state } (P_2, V_2, T_2),$ $\text{the work done is } W = \frac{\mu R (T_2 - T_1)}{1 - \gamma}, \text{ where } \gamma = \frac{C_P}{C_V} \text{ and } R =$ $\text{universal gas constant,}$ $\text{Statement II:}$ \text{In the above case, when work is done on the gas, the}$ $\text{temperature of the gas would rise.}$ 1 111 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 1 Edit Delete
19690 $\text{A thermally insulated vessel contains an ideal gas of molecular mass } M \text{ and a specific heat ratio of } 1.4. \text{ The vessel is moving with speed } v \text{ and is suddenly brought to rest. Assuming no heat is lost to the surroundings, then the vessel temperature of the gas increases by: } (R = \text{universal gas constant})$ 1 111 JEE MCQ NEW $\frac{Mv^2}{7R}$, $\frac{Mv^2}{5R}$... 2 Edit Delete
19689 $\text{The efficiency of a Carnot's engine, working between the steam point and ice point, will be:}$ 1 111 JEE MCQ NEW $26.81\%$, $37.81\%$... 1 Edit Delete
19688 $\text{A monoatomic gas performs a work of } \frac{Q}{4} \text{ where } Q \text{ is the heat}$ $\text{supplied to it. During this transformation, the molar heat capacity of}$ $\text{the gas will be: } (R \text{ is the gas constant.})$ 1 111 JEE MCQ NEW $R$, $2R$... 2 Edit Delete
19687 $\text{A Carnot engine whose heat sinks at } 27^\circ\text{C, has an efficiency of } 25\%. \text{ By how many degrees should the temperature of the source be changed to increase the efficiency by } 100\% \text{ of the original efficiency?}$ 1 111 JEE MCQ NEW $\text{Increase by } 18^\circ\text{C}$, $\text{Increase by } 200^\circ\text{C}$... 2 Edit Delete
19686 $\text{One mole of a rigid diatomic gas performs a work of } \frac{Q}{5} \text{ when heat } Q \text{ is supplied to it. The molar heat capacity of the gas during this transformation is:}$ 1 111 JEE MCQ NEW $\frac{15}{8} R$, $\frac{5}{8} R$... 3 Edit Delete
19685 $\text{The volume } V \text{ of a given mass of monoatomic gas changes with temperature } T \text{ according to the relation } V = KT^{2/3}. \text{ The work done when temperature changes by } 90 \text{ K will be:}$ 1 111 JEE MCQ NEW $60R$, $30R$... 1 Edit Delete
19684 $\text{The thermodynamic process is shown below on a } P-V \text{ diagram for one mole of an ideal gas. If } V_2 = 2V_1 \text{ then the ratio of temperature } T_2/T_1 \text{ is:}$ 1 111 JEE MCQ NEW $\frac{1}{2}$, $2$... 3 Edit Delete
19683 $\text{In a certain thermodynamical process, the pressure of a gas depends on its volume as } kV^3. \text{ The work done when the temperature changes from } 100^\circ\text{C to } 300^\circ\text{C will be:}$ $\text{(where } n \text{ denotes number of moles of a gas)}$ 1 111 JEE MCQ NEW $20nR$, $30nR$... 4 Edit Delete
19682 $\text{A diatomic gas, having } C_P = \frac{7}{2} R \text{ and } C_V = \frac{5}{2} R \text{ is heated at constant pressure. The ratio of } dU : dQ : dW \text{ is:}$ 1 111 JEE MCQ NEW $5 : 7 : 3$, $5 : 7 : 2$... 2 Edit Delete
19681 $\text{If one mole of an ideal gas at } (p_1, V_1) \text{ is allowed to expand reversibly and isothermally } (A \rightarrow B), \text{ its pressure is reduced to one-half of the original pressure (see figure).}$ $\text{This is followed by a constant-volume cooling till its pressure is reduced to one-fourth of the initial value } (B \rightarrow C). \text{ Then it is restored to its initial state by a reversible adiabatic compression}(C \rightarrow A). \text{ The net work done by the gas is:}$ 1 111 JEE MCQ NEW $RT \left( \ln 2 - \frac{1}{2(\gamma - 1)} \right)$, $-\frac{RT}{2(\gamma - 1)}$... 1 Edit Delete
19680 $\text{Match List-I with List-II and choose the correct option:}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \hline (a) \ \text{Isothermal process} & (i) \ \text{Pressure constant} \\ (b) \ \text{Isochoric process} & (ii) \ \text{Temperature constant} \\ (c) \ \text{Adiabatic process} & (iii) \ \text{Volume constant} \\ (d) \ \text{Isobaric process} & (iv) \ \text{Heat content is constant} \\ \hline \end{array}$ 1 111 JEE MCQ NEW $(a) \rightarrow (i), \ (b) \rightarrow (iii), \ (c) \rightarrow (ii), \ (d) \rightarrow (iv)$, $(a) \rightarrow (ii), \ (b) \rightarrow (iii), \ (c) \rightarrow (iv), \ (d) \rightarrow (i)$... 2 Edit Delete
19679 $n$ \text{ moles of a perfect gas undergoes a cyclic process } ABCA \text{ (see figure) consisting of the following processes.} $A \rightarrow B$ \text{ Isothermal expansion at temperature } T \text{ so that the volume is doubled from } V_1 \text{ to } V_2 = 2V_1 \text{ and pressure changes from } P_1 \text{ to } P_2. $B \rightarrow C$ \text{ Isobaric compression at pressure } P_2 \text{ to initial volume } V_1. $C \rightarrow A$ \text{ Isochoric change leading to change of pressure from } P_2 \text{ to } P_1. \text{Total work done in the complete cycle } ABCA \text{ is:} 1 111 JEE MCQ NEW nRT \left( \ln 2 - \frac{1}{2} \right), nRT \ln 2... 2 Edit Delete
19678 $\text{In an adiabatic process, the density of a diatomic gas becomes } 32 \text{ times its initial value. The final pressure of the gas is found to be } n \text{ times the initial pressure. The value of } n \text{ is:}$ 1 111 JEE MCQ NEW $326$, $\frac{1}{32}$... 4 Edit Delete
19677 $\text{Three different processes that can occur in an ideal monoatomic gas are shown in the } P \text{ vs } V \text{ diagram.}$ $\text{The paths are labelled as } A \rightarrow B, A \rightarrow C \text{ and } A \rightarrow D.$ $\text{The change in internal energies during these processes are taken as } E_{AB}, E_{AC} \text{ and } E_{AD}$ $\text{and the work done as } W_{AB}, W_{AC} \text{ and } W_{AD}. \text{ The correct relation between these parameters are:}$ 1 111 JEE MCQ NEW $E_{AB} = E_{AC} = E_{AD}, W_{AB} > 0, W_{AC} = 0, W_{AD} < 0$, $E_{AB} < E_{AC} < E_{AD}, W_{AB} > 0, W_{AC} > W_{AD}$... 1 Edit Delete
19676 $\text{The change in the magnitude of the volume of an ideal gas when a small additional pressure } \Delta P \text{ is applied at constant temperature, is the same as the change when the temperature is reduced by a small quantity } \Delta T \text{ at constant pressure. The initial temperature and pressure of the gas were } 300 \text{ K and } 2 \text{ atm. respectively. If } |\Delta T| = C|\Delta P| \text{ then the value of } C \text{ in (K/atm) is:}$ 1 111 JEE MCQ NEW $50$, $100$... 3 Edit Delete
19675 $\text{Match the thermodynamic processes taking place in a system with the correct conditions. In the table: } \Delta Q \text{ is the heat supplied, } \Delta W \text{ is the work done and } \Delta U \text{ is change in internal energy of the system.}$ $\begin{array}{|c|c|} \hline \text{Process} & \text{Condition} \\ \hline (\text{I}) \text{ Adiabatic} & (\text{A}) \Delta W = 0 \\ (\text{II}) \text{ Isothermal} & (\text{B}) \Delta Q = 0 \\ (\text{III}) \text{ Isochoric} & (\text{C}) \Delta U \neq 0, \Delta W \neq 0, \Delta Q \neq 0 \\ (\text{IV}) \text{ Isobaric} & (\text{D}) \Delta U = 0 \\ \hline \end{array}$ 1 111 JEE MCQ NEW $(\text{I}) - (\text{B}), (\text{II}) - (\text{A}), (\text{III}) - (\text{D}), (\text{IV}) - (\text{C})$, $(\text{I}) - (\text{A}), (\text{II}) - (\text{B}), (\text{III}) - (\text{C}), (\text{IV}) - (\text{D})$... 4 Edit Delete
19674 $\text{A closed vessel contains } 0.1 \text{ mole of a monatomic ideal gas at } 200 \text{ K.}$ $\text{If } 0.05 \text{ mole of the same gas at } 400 \text{ K is added to it, the final}$ $\text{equilibrium temperature (in K) of the gas in the vessel will be closed to:}$ 1 111 JEE MCQ NEW $133$, $57$... 3 Edit Delete
19673 $\text{If minimum possible work is done by a refrigerator in converting 100 grams of water at } 0^\circ \text{C to ice, how much heat (in calories) is released to the surroundings at temperature } 27^\circ \text{C (Latent heat of ice = 80 cal/gram) to the nearest integer?}$ $1. \ 3242$ $2. \ 8791$ $3. \ 1634$ $4. \ 100$ 1 111 JEE MCQ NEW $3242$, $8791$... 2 Edit Delete
19672 $\text{An engine takes in } 5 \text{ moles of air at } 20^\circ \text{ C and } 1 \text{ atm, and compresses it adiabatically to } \frac{1}{10} \text{ th of the original volume.}$ $\text{Assuming air to be a diatomic ideal gas made up of rigid molecules, the change in its internal energy during this process comes out to be:}$ 1 111 JEE MCQ NEW $46 \text{ J}$, $46 \text{ kJ}$... 2 Edit Delete
19671 $\text{A sample of an ideal gas is taken through the cyclic process } abca \text{ as shown in the figure.}$ $\text{The change in the internal energy of the gas along the path } ca \text{ is } -180 \text{ J.}$ $\text{The gas absorbs } 250 \text{ J of heat along the path } ab \text{ and } 60 \text{ J along the path } bc.$ $\text{The work done by the gas along the path } abc \text{ is:}$ 1 111 JEE MCQ NEW $140 \text{ J}$, $130 \text{ J}$... 2 Edit Delete
19670 $n$ \text{ moles of an ideal gas with constant volume heat capacity } $C_V$ \text{ undergo an isobaric expansion by a certain volume. The ratio of the work done in the process, to the heat supplied is:} 1 111 JEE MCQ NEW $\frac{nR}{C_V + nR}$, $\frac{nR}{C_V - nR}$... 1 Edit Delete
19669 $\text{The following figure shows two processes } A \text{ and } B \text{ for a gas. If } \Delta Q_A \text{ and } \Delta Q_B \text{ are the amount of heat absorbed by the system in two cases, and } \Delta U_A \text{ and } \Delta U_B \text{ are changes in internal energies, respectively, then:}$ 1 111 JEE MCQ NEW $\Delta Q_A > \Delta Q_B, \ \Delta U_A > \Delta U_B$, $\Delta Q_A < \Delta Q_B, \ \Delta U_A < \Delta U_B$... 3 Edit Delete
19668 $C_P \text{ and } C_V \text{ are specific heats at constant pressure and constant volume respectively. It is observed that}$ $C_P - C_V = a \text{ for hydrogen gas}$ $C_P - C_V = b \text{ for nitrogen gas}$ $\text{The correct relation between } a \text{ and } b \text{ is:}$ 1 111 JEE MCQ NEW $a = \frac{1}{14}b$, $a = b$... 3 Edit Delete
19667 $'n'$ \text{ moles of an ideal gas undergo a process } A \rightarrow B \text{ as shown in the figure. The maximum temperature of the gas during the process will be:}$ 1 111 JEE MCQ NEW $\frac{9P_0V_0}{4nR}$, $\frac{3P_0V_0}{2nR}$... 1 Edit Delete
19666 $\text{An ideal gas undergoes a quasi-static, reversible process in which its molar heat capacity } C \text{ remains constant. If during this process the relation of pressure } P \text{ and volume } V \text{ is given by } PV^n = \text{ constant, then } n \text{ is given by: (here } C_P \text{ and } C_V \text{ are molar specific heat at constant pressure and constant volume, respectively)}$ 1 111 JEE MCQ NEW $n = \frac{C_P}{C_V - C_P}$, $n = \frac{C - C_V}{C_P - C}$... 4 Edit Delete
19665 $\text{An ideal gas goes through a reversible cycle } a \rightarrow b \rightarrow c \rightarrow d \text{ has the } V-T \text{ diagram as shown below.}$ $\text{Process } d \rightarrow a \text{ and } b \rightarrow c \text{ are adiabatic.}$ 1 111 JEE MCQ NEW $\text{Option 1: Diagram with } P \text{ and } V \text{ axes, cycle } d \rightarrow a \rightarrow b \rightarrow c$, $\text{Option 2: Diagram with } P \text{ and } V \text{ axes, cycle } a \rightarrow b \rightarrow c \rightarrow d$... 3 Edit Delete
19664 $\text{Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes an adiabatic expansion, the average time of collision between molecules increases as } V^q, \text{ where } V \text{ is the volume of the gas. The value of } q \text{ is: } \left( \gamma = \frac{C_P}{C_V} \right)$ 1 111 JEE MCQ NEW $\frac{3\gamma + 5}{6}$, $\frac{3\gamma - 5}{6}$... 3 Edit Delete
19663 $\text{Consider a spherical shell of radius } R \text{ at temperature } T. \text{ The black body radiation inside it can be considered as an ideal gas of photons}$ $\text{with internal energy per unit volume } u = \frac{U}{V} \propto T^4 \text{ and } P = \frac{1}{3} \left( \frac{U}{V} \right).$ $\text{If the shell now undergoes an adiabatic expansion the relation between } T \text{ and } R \text{ is:}$ 1 111 JEE MCQ NEW $T \propto e^{-R}$, $T \propto e^{-3R}$... 3 Edit Delete
19662 $\text{One mole of a diatomic ideal gas undergoes a cyclic process } ABC \text{ as shown in figure. The process } BC \text{ is adiabatic. The temperatures at } A, B \text{ and } C \text{ are } 400 \text{ K, } 800 \text{ K and } 600 \text{ K respectively. Choose the correct statement:}$ 1 111 JEE MCQ NEW $\text{The change in internal energy in the process } CA \text{ is } 700 R$, $\text{The change in internal energy in the process } AB \text{ is } -350 R$... 3 Edit Delete
19661 $\text{An object cools down from } 80^\circ\text{C to } 60^\circ\text{C in } 5 \text{ min in a surrounding of temperature } 20^\circ\text{C.}$ $\text{The time taken to cool from } 60^\circ\text{C to } 40^\circ\text{C will be:}$ $\text{(Assume Newton's law of cooling to be valid.)}$ 1 110 JEE MCQ NEW $\frac{25}{3} \text{ min}$, $5 \text{ min}$... 1 Edit Delete
19660 $\text{A uniform rectangular plate has a circular hole of diameter } d \text{ as shown in the figure. The coefficient of linear expansion of the plate is } \alpha. \text{ What will be the change in the diameter of the hole if the temperature of the plate is increased by } \Delta T?$ 1 110 JEE MCQ NEW $2\alpha \Delta T$, $d \alpha \Delta T$... 2 Edit Delete
19659 $\text{Read the following statements:}$ $\text{A. When small temperature difference between a liquid and its surrounding is doubled the rate of loss of heat of the liquid becomes twice.}$ $\text{B. Two bodies P and Q having equal surface areas are maintained at temperature 10}^\circ\text{C and 20}^\circ\text{C. The thermal radiation emitted in a given time by P and Q are in the ratio 1 : 1.15}$ $\text{C. A car engine working between 100 \text{ K and } 400 \text{ K has an efficiency of 75\%}}$ $\text{D. When small temperature difference between a liquid and its surrounding is quadrupled, the rate of loss of heat of the liquid becomes twice.}$ $\text{Choose the correct answer from the options given below:}$ 1 110 JEE MCQ NEW $\text{A, B, C only}$, $\text{A, B only}$... 1 Edit Delete
19658 $\text{An ice cube of dimensions } 60 \text{ cm} \times 50 \text{ cm} \times 20 \text{ cm is placed in an insulation box of wall thickness } 1 \text{ cm. The box keeping the ice cube at } 0^\circ\text{C of temperature is brought to a room of temperature } 40^\circ\text{C. The rate of melting of ice is approximately:}$ $\text{(Latent heat of fusion of ice is } 3.4 \times 10^5 \text{ J kg}^{-1} \text{ and thermal conducting of insulation wall is } 0.05 \text{ Wm}^{-1} \text{ } ^\circ\text{C}^{-1})$ 1 110 JEE MCQ NEW $61 \times 10^{-3} \text{ kg s}^{-1}$, $61 \times 10^{-5} \text{ kg s}^{-1}$... 2 Edit Delete
19657 $\text{A lead bullet penetrates into a solid object and melts. Assuming that }$ $40\% \text{ of its kinetic energy is used to heat it, the initial speed of the bullet is: (Given, the initial temperature of the bullet = } 127^\circ\text{C,}$ $\text{Melting point of the bullet = } 327^\circ\text{C,}$ $\text{Latent heat of fusion of lead = } 2.5 \times 10^4 \text{ J Kg}^{-1}, \text{ Specific heat capacity of lead = } 125 \text{J/kg K)}$ 1 110 JEE MCQ NEW $125 \text{ ms}^{-1}$, $500 \text{ ms}^{-1}$... 2 Edit Delete
19656 $\text{A copper block of mass } 5.0 \text{ kg is heated to a temperature of } 500^\circ\text{C}$ $\text{and is placed on a large ice block. The maximum amount of ice that}$ $\text{can melt is: [Specific heat of copper: } 0.39 \text{ Jg}^{-1}\text{C}^{-1}\text{ and latent heat}$ $\text{of fusion of water: } 335 \text{ J g}^{-1} ]$ 1 110 JEE MCQ NEW $1.5 \text{ kg}$, $5.8 \text{ kg}$... 3 Edit Delete
19655 $\text{A solid metallic cube having a total surface area of } 24 \text{ m}^2 \text{ is uniformly heated. If its temperature is increased by } 10^\circ\text{C, the increase in the volume of the cube is:}$ $\text{(Given: } \alpha = 5.0 \times 10^{-4}\text{C}^{-1}\text{)}$ 1 110 JEE MCQ NEW $2.4 \times 10^6 \text{ cm}^3$, $1.2 \times 10^5 \text{ cm}^3$... 2 Edit Delete
19654 $\text{A 100 g of iron nail is hit by a 1.5 kg hammer striking at a velocity of 60 ms}^{-1}. \text{ What will be the rise in the temperature of the nail if one-fourth of the energy of the hammer goes into heating the nail?}$ $\text{[Specific heat capacity of iron = 0.42 Jg}^{-1} \cdot \text{°C}^{-1}]$ 1 110 JEE MCQ NEW $675\text{°C}$, $1600\text{°C}$... 3 Edit Delete
19653 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{When a rod lying freely is heated, no thermal stress is developed in it.}$ $\text{Reason (R):}$ \text{On heating the length of the rod increases.}$ 1 110 JEE MCQ NEW $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
19652 $\text{A bullet of mass } 5 \text{ g, travelling with a speed of } 210 \text{ m/s, strikes a fixed wooden target.}$ $\text{One half of its kinetic energy is converted into heat in the bullet while the other half is converted into heat in the wood.}$ $\text{The rise of temperature of the bullet if the specific heat of its material is } 0.03 \text{ cal/gm}^\circ\text{C (1 cal } = 4.2 \times 10^7 \text{ ergs) close to:}$ 1 110 JEE MCQ NEW $83.3^\circ\text{C}$, $87.5^\circ\text{C}$... 2 Edit Delete
19651 $\text{The specific heat of water} = 4200 \text{ Jkg}^{-1}\text{K}^{-1}$ $\text{and the latent heat of ice} = 3.4 \times 10^5 \text{ Jkg}^{-1}$. $100 \text{ grams of ice at } 0^\circ \text{C is placed in } 200 \text{ g of water at } 25^\circ\text{C}$. $\text{The amount of ice that will melt as the temperature of the water reaches } 0^\circ\text{C is close to (in grams):}$ 1 110 JEE MCQ NEW 61.7, 69.3... 1 Edit Delete
19650 $\text{A calorimeter of water equivalent } 20 \text{ g contains } 180 \text{ g of water at } 25^\circ \text{ C.}$ $'m' \text{ grams of steam at } 100^\circ \text{ C is mixed in it till the temperature of the mixture is } 31^\circ \text{ C.}$ $\text{The value of } 'm' \text{(in grams) is close to: (Latent heat of water } = 540 \text{ cal g}^{-1}, \text{ specific heat of water } = 1 \text{ cal g}^{-1}{}^\circ \text{C}^{-1})$ 1 110 JEE MCQ NEW 2, 2.6... 1 Edit Delete
19649 $\text{A rod of length } L \text{ at room temperature and uniform area of the cross-section } A, \text{ is made of a metal having a coefficient of linear expansion } \alpha/^{\circ}\text{C.}$ $\text{It is observed that an external compressive force } F, \text{ is applied on each of its ends, preventing any change in the length of the rod, when it temperature rises by } \Delta T K.$ $\text{Young's modulus } Y, \text{ for this metal is:}$ 1 110 JEE MCQ NEW $\frac{F}{A \alpha \Delta T}$, $\frac{F}{A \alpha (\Delta T - 273)}$... 1 Edit Delete
19648 $\text{The temperature difference of } 120^\circ \text{C is maintained between two ends of a uniform rod } AB \text{ of length } 2L. \text{ Another bent rod } PQ, \text{ of the same cross-section as } AB \text{ and the length } \frac{3L}{2}, \text{ is connected across } AB \text{ (see figure). In steady state, the temperature difference between } P \text{ and } Q \text{ will be close to:}$ 1 110 JEE MCQ NEW $45^\circ \text{C}$, $75^\circ \text{C}$... 1 Edit Delete
19647 $\text{A thermally insulated vessel contains } 150 \text{ g of water at } 0^\circ \text{C.}$ $\text{Then the air from the vessel is pumped out adiabatically.}$ $\text{A fraction of water turns into ice and the rest evaporates at } 0^\circ \text{C itself.}$ $\text{The mass of evaporated water will be closest to:}$ $\text{(Latent heat of vaporization of water } = 2.10 \times 10^6 \text{ Jkg}^{-1}$ $\text{and Latent heat of fusion of water } = 3.36 \times 10^5 \text{ Jkg}^{-1})$ 1 110 JEE MCQ NEW $130 \text{ g}$, $35 \text{ g}$... 4 Edit Delete
19646 $\text{A heating element has a resistance of } 100 \, \Omega \text{ at room temperature.}$ $\text{When it is connected to a supply of } 220 \, \text{V} \text{ a steady current of } 2 \, \text{A}$ $\text{passes in it and temperature is } 500^\circ \text{C more than room temperature.}$ $\text{What is the temperature coefficient of resistance of the heating element?}$ 1 110 JEE MCQ NEW $5 \times 10^{-4} \, ^\circ \text{C}^{-1}$, $2 \times 10^{-4} \, ^\circ \text{C}^{-1}$... 2 Edit Delete
19645 $\text{A steel rail of length } 5 \text{ m and cross-sectional area } 40 \text{ cm}^2 \text{ is rigidly fixed at both ends, preventing it from expanding when the temperature rises by } 10^\circ \text{C.}$ $\text{Given that the coefficient of linear expansion of steel is } 1.2 \times 10^{-5} \text{ K}^{-1} \text{ and its Young's modulus is } 2 \times 10^{11} \text{ Nm}^{-2}, \text{ the approximate force developed in the rail is:}$ 1 110 JEE MCQ NEW $1.2 \times 10^9 \text{ N}$, $3 \times 10^{-5} \text{ N}$... 4 Edit Delete
19644 $\text{In an experiment a sphere of aluminum of mass } 0.20 \text{ kg is heated up to } 150^\circ\text{C.}$ $\text{Immediately, it is put into the water of volume } 150 \text{ cc at } 27^\circ\text{C}$ $\text{kept in a calorimeter of water equivalent of } 0.025 \text{ kg.}$ $\text{The final temperature of the system is } 40^\circ\text{C.}$ $\text{The specific heat of aluminum is:}$ $\text{(take } 4.2 \text{ joule } = 1 \text{ calorie)}$ 1 110 JEE MCQ NEW $315 \text{ J kg}^{-1}\text{C}^{-1}$, $378 \text{ J kg}^{-1}\text{C}^{-1}$... 4 Edit Delete
19643 $\text{A compressive force } F \text{ is applied at the two ends of a long thin steel rod. It is heated, simultaneously, such that its temperature increases by } \Delta T. \text{ The net change in its length is zero. Let } l \text{ be the length of the rod, } A \text{ its area of cross-section, } Y \text{ is Young's modulus and } \alpha \text{ is coefficient of linear expansion. Then, the force } F \text{ is equal to:}$ 1 110 JEE MCQ NEW $\frac{AY}{\alpha \Delta T}$, $AY \alpha \Delta T$... 2 Edit Delete
19642 $\text{A copper ball of mass } 100 \text{ g is at a temperature } T. \text{ It is dropped into a copper calorimeter of mass } 100 \text{ g, containing } 170 \text{ g of water at room temperature. The final temperature of the system is found to be } 75^\circ\text{C. The initial temperature } T \text{ of the copper ball is:}$ $\text{(Given: room temperature } = 30^\circ\text{C, specific heat of copper } = 0.1 \text{ cal/g }^\circ\text{C)}$ 1 110 JEE MCQ NEW $800^\circ\text{C}$, $885^\circ\text{C}$... 2 Edit Delete
19641 $\text{For an object radiating heat at } 300 \text{ K, the wavelength corresponding to maximum intensity is } \lambda. \text{ When the temperature of the body increases by } 300 \text{ K, the new wavelength corresponding to maximum intensity becomes:}$ 1 110 JEE MCQ NEW $\frac{\lambda}{2}$, $2\lambda$... 1 Edit Delete
19640 $\text{The temperature of body drops from } 60^\circ \text{C to } 40^\circ \text{C in } 7 \text{ min. The surrounding temperature is } 10^\circ \text{C.}$ $\text{The temperature of body drops from } 40^\circ \text{C to } T^\circ \text{C in } 7 \text{ min. The value of } T \text{ is:}$ 1 110 JEE MCQ NEW $16^\circ \text{C}$, $20^\circ \text{C}$... 3 Edit Delete
19639 $\text{The heat passing through the cross-section of a conductor, varies with time } t \text{ as } Q(t) = \alpha t - \beta t^2 + \gamma t^3 \ (\alpha, \beta \text{ and } \gamma \text{ are positive constants}).$ $\text{The minimum heat current through the conductor is:}$ 1 110 JEE MCQ NEW $\alpha - \frac{\beta^2}{2\gamma}$, $\alpha - \frac{\beta^2}{3\gamma}$... 2 Edit Delete
19638 $\text{The temperature of hot soup in a bowl goes } 98^\circ \text{C to } 86^\circ \text{C in 2 min.}$ $\text{The temperature of the surrounding is } 22^\circ \text{C.}$ $\text{What is the time taken for the temperature of the soup to go from } 75^\circ \text{C to } 69^\circ \text{C?}$ $\text{(Assume Newton's law of cooling is valid)}$ 1 110 JEE MCQ NEW $1 \text{ min}$, $1.4 \text{ min}$... 2 Edit Delete
19637 $K_1 \text{ and } K_2 \text{ are the thermal conductivities, } L_1 \text{ and } L_2 \text{ are the lengths, and } A_1 \text{ and } A_2 \text{ are the cross-sectional areas of steel and copper rods respectively such that } \frac{K_2}{K_1} = 9, \frac{A_1}{A_2} = 2 \text{ and } \frac{L_1}{L_2} = 2.$ $\text{Then, for the arrangement as shown in the figure, the value of the temperature } T \text{ of the steel-copper junction in the steady-state will be:}$ 1 110 JEE MCQ NEW $18^\circ \text{C}$, $14^\circ \text{C}$... 3 Edit Delete
19636 $\text{A unit scale is to be prepared whose length does not change with temperature and remains } 20 \text{ cm, using a bimetallic strip made of brass and iron, each of different lengths. The length of both components would change in such a way that the difference between their lengths remains constant. If the length of the brass is } 40 \text{ cm, then the length of the iron will be:}$ $\left( \alpha_{\text{iron}} = 1.2 \times 10^{-5} \text{ K}^{-1} \text{ and } \alpha_{\text{brass}} = 1.8 \times 10^{-5} \text{ K}^{-1} \right).$ 1 110 JEE MCQ NEW $20 \text{ cm}$, $40 \text{ cm}$... 3 Edit Delete
19635 $\text{At what temperature a gold ring of diameter } 6.230 \text{ cm be heated so that it can be fitted on a wooden bangle of diameter } 6.241 \text{ cm? Both diameters have been measured at room temperature } (27^\circ\text{C}). \text{ (Given: coefficient of linear thermal expansion of gold, } \alpha_L = 1.4 \times 10^{-5}\text{K}^{-1})$ 1 110 JEE MCQ NEW $125.7^\circ\text{C}$, $91.7^\circ\text{C}$... 4 Edit Delete
19634 $\text{As per the given figure, two plates } A \text{ and } B \text{ of thermal conductivity } K \text{ and } 2K \text{ are joined together to form a compound plate.}$ $\text{The thickness of the plates are } 4.0 \text{ cm and } 2.5 \text{ cm respectively and the area of the cross-section is } 120 \text{ cm}^2 \text{ for each plate.}$ $\text{The equivalent thermal conductivity of the compound plate is } \left(1 + \frac{5}{\alpha}\right) K, \text{ then the value of } \alpha \text{ will be:}$ 1 110 JEE MCQ NEW 21, 10... 1 Edit Delete
19633 $\text{In an experiment to verify Newton's law of cooling, a graph is plotted}$ $\text{between the temperature difference } (\Delta T) \text{ of the water and}$ $\text{surroundings and time as shown in the figure. The initial temperature}$ $\text{of the water is taken as } 80^\circ \text{C. The value of } t_2 \text{ as mentioned in the}$ $\text{graph will be:}$ 1 110 JEE MCQ NEW $12$, $14$... 3 Edit Delete
19632 $\text{Two metallic blocks } M_1 \text{ and } M_2 \text{ of the same area of the cross-section are connected to each other (as shown in the figure). If the thermal conductivity of } M_2 \text{ is } K, \text{ then the thermal conductivity of } M_1 \text{ will be:}$ $\text{(Assume steady state heat conduction)}$ 1 110 JEE MCQ NEW $10K$, $8K$... 2 Edit Delete
19631 $\text{The temperature } \theta \text{ at the junction of two insulating sheets, having thermal resistances } R_1 \text{ and } R_2 \text{ as well as top and bottom temperatures } \theta_1 \text{ and } \theta_2 \text{ (as shown in the figure) is given by:}$ 1 110 JEE MCQ NEW $\frac{\theta_2 R_2 - \theta_1 R_1}{R_2 - R_1}$, $\frac{\theta_1 R_2 - \theta_2 R_1}{R_2 - R_1}$... 3 Edit Delete
19630 $\text{A cube is constructed from a metal sheet such that each of its sides has a length } a \text{ at room temperature } T. \text{ The coefficient of linear expansion of the metal is } \alpha. \text{ The entire cube is then heated uniformly so that its temperature increases by a small amount } \Delta T, \text{ making the new temperature } T + \Delta T. \text{ Assuming the expansion is small and isotropic, what is the cube's volume increase due to this heating?}$ 1 110 JEE MCQ NEW $3a^3\alpha\Delta T$, $4a^3\alpha\Delta T$... 1 Edit Delete
19629 $\text{Three rods of identical cross-sections and lengths are made of three different materials of thermal conductivity } K_1, K_2, K_3, \text{ respectively. They are joined together at their ends to make a long rod (see figure). One end of the long rod is maintained at } 100^\circ C \text{ and the other at } 0^\circ C \text{ (see figure). If the joints of the rod are at } 70^\circ C \text{ and } 20^\circ C \text{ in a steady state and there is no loss of energy from the surface of the rod, the correct relationship between } K_1, K_2, \text{ and } K_3 \text{ is:}$ 1 110 JEE MCQ NEW $K_1 : K_3 = 2 : 3; K_2 : K_3 = 2 : 5$, $K_1 < K_2 < K_3$... 1 Edit Delete
19628 $\text{Two different wires having lengths } L_1 \text{ and } L_2, \text{ and respective temperature coefficient of linear expansion } \alpha_1 \text{ and } \alpha_2, \text{ are joined end-to-end. Then the effective temperature coefficient of linear expansion is:}$ 1 110 JEE MCQ NEW $\frac{\alpha_1 \alpha_2}{\alpha_1 + \alpha_2} \frac{L_2 L_1}{(L_2 + L_1)^2}$, $2 \sqrt{\alpha_1 \alpha_2}$... 4 Edit Delete
19627 $\text{When the temperature of a metal wire is increased from } 0^\circ \text{C to } 10^\circ \text{C, its length increases by } 0.02\%. \text{ What is the percentage decrease in its mass density?}$ $1.\ 0.008\%$ $2.\ 0.06\%$ $3.\ 0.8\%$ $4.\ 2.3\%$ 1 110 JEE MCQ NEW $0.008\%$, $0.06\%$... 2 Edit Delete
19626 $\text{A uniform cylindrical rod of length } L \text{ and radius } r, \text{ is made from a material whose Young's modulus of Elasticity equals } Y. \text{ When this rod is heated by temperature } T \text{ and simultaneously subjected to a net longitudinal compressional force } F, \text{ its length remains unchanged. The coefficient of volume expansion, of the material of the rod, is (nearly) equal to:}$ 1 110 JEE MCQ NEW $\frac{3F}{\pi r^2 Y T}$, $\frac{6F}{\pi r^2 Y T}$... 1 Edit Delete
19625 $\text{When } M_1 \text{ gram of ice at } -10^\circ\text{C (specific heat = 0.5 cal g}^{-1} \circ\text{C}^{-1}) \text{ is added to } M_2 \text{ gram of water at } 50^\circ\text{C,}$ $\text{It is observed that no ice is left and the water is at } 0^\circ\text{C.}$ $\text{The value of latent heat of ice, in cal g}^{-1} \text{ is:}$ 1 110 JEE MCQ NEW $\frac{50M_2}{M_1} - 5$, $\frac{M_1}{50M_2}$... 1 Edit Delete
19624 $\text{Two materials having coefficients of thermal conductivity } 3K \text{ and } K \text{ and thickness } d \text{ and } 3d \text{ respectively, are joined to form a slab as shown in the figure.}$ $\text{The temperatures of the outer surfaces are } \theta_1 \text{ and } \theta_2 \text{ respectively, } (\theta_2 > \theta_1).$ $\text{The temperature at the interface is:}$ 1 110 JEE MCQ NEW $\frac{\theta_2 + \theta_1}{2}$, $\frac{\theta_1}{2} + \frac{2\theta_2}{3}$... 3 Edit Delete
19623 $\text{Two identical beakers } A \text{ and } B \text{ contain equal volumes of two different liquids at } 60^\circ C \text{ each and left to cool down.}$ $\text{Liquid in } A \text{ has density of } 8 \times 10^2 \text{ kg/m}^3 \text{ and specific heat of } 2000 \text{ Jkg}^{-1}\text{K}^{-1}$ $\text{while liquid in } B \text{ has density of } 10^3 \text{ kgm}^{-3} \text{ and specific heat of } 4000 \text{ Jkg}^{-1}\text{K}^{-1}.$ $\text{Which of the following best describes their temperature versus time graph schematically?}$ $\text{(assume the emissivity of both the beakers to be the same)}$ 1 110 JEE MCQ NEW $\begin{array}{c} T \\ 60^\circ C \end{array} \quad \begin{array}{c} A \text{ and } B \\ \quad \end{array} \quad t$, $\begin{array}{c} T \\ 60^\circ C \end{array} \quad \begin{array}{c} B \\ A \end{array} \quad t$... 2 Edit Delete
19622 $\text{An external pressure } P \text{ is applied on a cube at } 0^\circ C \text{ so that it is equally compressed from all sides. } K \text{ is the bulk modulus of the material of the cube and } \alpha \text{ is its coefficient of linear expansion.}$ $\text{Suppose we want to bring the cube to its original size by heating. The temperature should be raised by:}$ 1 110 JEE MCQ NEW $\frac{P}{3 \alpha K}$, $\frac{P}{\alpha K}$... 1 Edit Delete
19621 $\text{The pressure that has to be applied to the ends of a steel wire of length } 10 \text{ cm to keep its length constant when its temperature is raised by } 100^\circ \text{C is:}$ $\text{(Young's modulus of steel is } 2 \times 10^{11} \text{ Nm}^{-2} \text{ and coefficient of thermal expansion is } 1.1 \times 10^{-5} \text{ K}^{-1})$ 1 110 JEE MCQ NEW $2.2 \times 10^9 \text{ Pa}$, $2.2 \times 10^7 \text{ Pa}$... 4 Edit Delete
19620 $\text{A spherical ball of radius } 1 \times 10^{-4} \text{ m and density } 10^5 \text{ kg/m}^3 \text{ falls freely under gravity through a distance } h \text{ before entering a tank of water.}$ $\text{If after entering in water the velocity of the ball does not change, then the value of } h \text{ is approximately:}$ $\text{(The coefficient of viscosity of water is } 9.8 \times 10^{-6} \text{ N s/m}^2)$ 1 109 JEE MCQ NEW $2296 \text{ m}$, $2518 \text{ m}$... 2 Edit Delete
19619 $\text{The excess pressure inside a soap bubble is thrice the excess}$ $\text{pressure inside a second soap bubble. The ratio between the volume}$ $\text{of the first and the second bubble is:}$ 1 109 JEE MCQ NEW $1 : 81$, $1 : 9$... 3 Edit Delete
19618 $\text{A sphere of relative density } \sigma \text{ and diameter } D \text{ has concentric cavity of diameter } d. \text{ The ratio of } D/d, \text{ if it just floats on water in a tank is:}$ 1 109 JEE MCQ NEW $\left( \frac{\sigma - 1}{\sigma} \right)^{1/3}$, $\left( \frac{\sigma}{\sigma - 1} \right)^{1/3}$... 2 Edit Delete
19617 $\text{Correct Bernoulli's equation is (symbols have their usual meaning):}$ 1 109 JEE MCQ NEW $P + \rho gh + \frac{1}{2} \rho v^2 = \text{constant}$, $P + \rho gh + \rho v^2 = \text{constant}$... 1 Edit Delete
19616 $\text{Pressure inside a soap bubble is greater than the pressure outside by an amount:}$ $\text{(Given: R = Radius of bubble, S = Surface tension of bubble)}$ 1 109 JEE MCQ NEW $\frac{4R}{S}$, $\frac{4S}{R}$... 2 Edit Delete
19615 $\text{A small ball of mass } m \text{ and density } \rho \text{ is dropped in a viscous liquid of density } \rho_0. \text{ After sometime, the ball falls with constant velocity. The viscous force on the ball is:}$ 1 109 JEE MCQ NEW $mg \left( \frac{\rho_0}{\rho} - 1 \right)$, $mg \left( 1 - \rho \rho_0 \right)$... 4 Edit Delete
19614 $\text{Given below are two statements:}$ $\text{Statement - I: The contact angle between a solid and a liquid is a property of the solid and liquid as well.}$ $\text{Statement - II: The rise of a liquid in a capillary tube does not depend on the radius of the tube.}$ 1 109 JEE MCQ NEW $\text{Statement I is false but Statement II is true.}$, $\text{Both Statement I and Statement II are false.}$... 4 Edit Delete
19613 $\text{Out of air and liquid, which substance is more viscous?}$ 1 109 JEE MCQ NEW $\text{Air}$, $\text{Liquid}$... 2 Edit Delete
19612 $\text{The excess pressure inside a soap bubble of radius } R \text{ and surface tension } T \text{ is:}$ 1 109 JEE MCQ NEW $\frac{T}{R}$, $\frac{2T}{R}$... 4 Edit Delete
19611 $\text{Given below are two statements:}$ $\text{Assertion (A): Clothes containing oil or grease stains cannot be cleaned by water wash}$ $\text{Reason (R): Because the angle of contact between the oil/grease and water is obtuse.}$ 1 109 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19610 $\text{The diameter of an air bubble which was initially } 2 \text{ mm, rises steadily through a solution of density } 1750 \text{ kgm}^{-3} \text{ at the rate of } 0.35 \text{ cms}^{-1}. \text{ The coefficient of viscosity of the solution is (in the nearest integer):}$ $\text{(The density of air is negligible).}$ 1 109 JEE MCQ NEW $15 \text{ poise}$, $9 \text{ poise}$... 4 Edit Delete
19609 $\text{A drop of liquid of density } \rho \text{ is floating half immersed in a liquid } \sigma$ $\text{and surface tension } 7.5 \times 10^{-4} \text{ Ncm}^{-1}. \text{ The radius of drop in cm}$ $\text{will be: (Take } g = 10 \text{ m/s}^2)$ 1 109 JEE MCQ NEW $\frac{15}{\sqrt{2\rho - \sigma}}$, $\frac{15}{\sqrt{\rho - \sigma}}$... 1 Edit Delete
19608 $\text{A liquid of density } 750 \text{ kgm}^{-3} \text{ flows smoothly through a horizontal pipe that tapers in cross-sectional area from } A_1 = 1.2 \times 10^{-2} \text{ m}^2 \text{ to } A_2 = \frac{A_1}{2} . \text{ The pressure difference between the wide and narrow sections of the pipe is } 4500 \text{ Pa. The rate of flow of liquid is:}$ 1 109 JEE MCQ NEW $20 \times 10^{-3} \text{ m}^{-3}\text{s}^{-1}$, $30 \times 10^{-3} \text{ m}^{-3}\text{s}^{-1}$... 4 Edit Delete
19607 $\text{A water drop of radius } 1 \, \mu m \text{ falls in a situation where the effect of buoyant force is negligible.}$ $\text{Co-efficient of viscosity of air is } 1.8 \times 10^{-5} \, \text{Nsm}^{-2} \text{ and its density is negligible as compared to that of water } 10^6 \, \text{gm}^{-3}. \text{ Terminal velocity of the water drop is:}$ $\text{(Take acceleration due to gravity } = 10 \, \text{ms}^{-2})$ 1 109 JEE MCQ NEW $145.4 \times 10^{-6} \, \text{ms}^{-1}$, $118.0 \times 10^{-6} \, \text{ms}^{-1}$... 4 Edit Delete
19606 $\text{An ideal fluid of density } 800 \text{ kgm}^{-3}, \text{ flows smoothly through a bent pipe (as shown in the figure) that tapers in cross-sectional area from } a \text{ to } \frac{a}{2}. \text{ The pressure difference between the wide and narrow sections of the pipe is } 4100 \text{ Pa. At the wider section, the velocity of the fluid is } \frac{\sqrt{x}}{6} \text{ ms}^{-1}. \text{ The value of } x \text{ is: (Given: } g = 10 \text{ m}^{-2})$ 1 109 JEE MCQ NEW $124$, $236$... 3 Edit Delete
19605 $\text{The terminal velocity } (v_T) \text{ of a spherical raindrop depends on the radius } (r) \text{ of the raindrop as follows:}$ 1 109 JEE MCQ NEW $r^{1/2}$, $r$... 3 Edit Delete
19604 $\text{The pressure inside two soap bubbles are } 1.01 \text{ and } 1.02 \text{ atmosphere, respectively. The ratio of their volumes is:}$ 1 109 JEE MCQ NEW $4 : 1$, $2 : 1$... 3 Edit Delete
19603 $\text{The top of a water tank is open to air and its water level is maintained. It is giving out } 0.74 \ \text{m}^3 \text{ water per minute through a circular opening of } 2 \ \text{cm} \text{ radius in its wall. The depth of the centre of the opening from the level of water in the tank is close to:}$ 1 109 JEE MCQ NEW $6.0 \ \text{m}$, $4.8 \ \text{m}$... 2 Edit Delete
19602 $\text{Two tubes of radii } r_1 \text{ and } r_2, \text{ and length } l_1 \text{ and } l_2, \text{ respectively, are connected in series and a liquid flows through each of them in streamlined conditions. } P_1 \text{ and } P_2 \text{ are pressure differences across the two tubes. If } P_2 = 4P_1 \text{ and } l_2 = \frac{l_1}{4}, \text{ then the radius } r_2 \text{ will be equal to:}$ 1 109 JEE MCQ NEW $2r_1$, $\frac{r_1}{2}$... 2 Edit Delete
19601 $\text{If two glass plates have water between them and are separated by a very small distance (see figure), it is very difficult to pull them apart. It is because the water in between forms a cylindrical surface on the side that gives rise to lower pressure in the water in comparison to the atmosphere. If the radius of the cylindrical surface is } R \text{ and the surface tension of water is } T \text{ then the pressure in water between the plates is lower by:}$ 1 109 JEE MCQ NEW $\frac{2T}{R}$, $\frac{4T}{R}$... 4 Edit Delete
19600 $\text{A liquid drop of radius } R \text{ is divided into } 27 \text{ identical drops. If the surface tension of the drops is } T, \text{ then the work done in this process is:}$ 1 109 JEE MCQ NEW $4\pi R^2 T$, $3\pi R^2 T$... 3 Edit Delete
19599 $\text{Consider the two statements:}$ $\text{Statement I:}$ \text{A capillary tube is first dipped in hot water and then in cold water. The water rises higher in the hot water.}$ $\text{Statement II:}$ \text{A capillary tube is first dipped in cold water and then in hot water. The water rises higher in the cold water.}$ 1 109 JEE MCQ NEW $\text{Statement I is correct and Statement II is incorrect.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 2 Edit Delete
19598 $\text{The pressures at the ends of a horizontal pipe are given for water.}$ $\text{The speed } v \text{ at end 2 if the speed at end 1 is } 10 \text{ m/s.}$ $\text{(density of water } = 1000 \text{ kg/m}^3).$ $\text{Then the speed } v \text{ (in m/s) is:}$ 1 109 JEE MCQ NEW $22$, $33$... 3 Edit Delete
19597 $\text{Water is flowing inside the conical type tube having a ratio of area of cross-section } 6 : 1. \text{ If the speed of the water outlet through a smaller area is } 60 \text{ m/s, then the pressure difference across these two cross-sections is:}$ $\text{(assume incompressible fluid, density of water } = 1000 \text{ kg/m}^3 )$ 1 109 JEE MCQ NEW $175 \times 10^4 \text{ Pa}$, $175 \times 10^3 \text{ Pa}$... 1 Edit Delete
19596 $\text{Six identical small liquid drops, each falling with a terminal velocity of } 10 \text{ m/s, coalesce to form a single larger spherical drop. Assuming the drops fall through the same viscous medium under gravity and obey Stokes' law, what will be the terminal velocity of the larger drop?}$ 1 109 JEE MCQ NEW $10 \times (6)^{1/3} \text{ m/s}$, $10 \times (6)^{2/3} \text{ m/s}$... 2 Edit Delete
19595 $\text{An air bubble having volume } 1 \ \text{cm}^3 \text{ at depth } 40 \ \text{m inside water comes to surface.}$ $\text{What will be the volume of the bubble at the surface?}$ 1 109 JEE MCQ NEW $5 \ \text{cm}^3$, $2 \ \text{cm}^3$... 1 Edit Delete
19594 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{When toothpaste is pressed (squeezed), it follows Pascal's law.}$ $\text{Reason (R):}$ $\text{When pressure is applied to a fluid, it is transmitted equally throughout the fluid in all directions and on the walls of the container.}$ 1 109 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19593 $\text{A ball with mass } m, \text{ radius } r, \text{ and density } \rho \text{ is dropped into a liquid with density } \rho_0. \text{ After a period of motion, the speed of the ball becomes constant, equal to } v_0. \text{ The coefficient of viscosity of the liquid is:}$ 1 109 JEE MCQ NEW $\frac{mg}{6 \pi r v_0} \left( 1 - \frac{\rho_0}{\rho} \right)$, $\frac{mg}{6 \pi r v_0} \left( 1 + \frac{\rho_0}{\rho} \right)$... 1 Edit Delete
19592 $\text{A drop of mercury is divided into } 125 \text{ drops of equal radius } 10^{-3} \text{ m each.}$ $\text{If the surface tension of mercury is equal to } 0.45 \text{ N/m.}$ $\text{The magnitude of change in surface energy is equal to nearly:}$ 1 109 JEE MCQ NEW $1.14 \times 10^{-4} \text{ J}$, $7.06 \times 10^{-4} \text{ J}$... 4 Edit Delete
19591 $\text{A drop of water of } 10 \text{ mm radius is divided into } 1000 \text{ droplets. If the surface tension of the water surface is equal to } 0.073 \text{ J/m}^2 \text{ then increment in surface energy while breaking down the bigger drop in small droplets as mentioned is equal to:}$ 1 109 JEE MCQ NEW $8.25 \times 10^{-5} \text{ J}$, $9.17 \times 10^{-4} \text{ J}$... 4 Edit Delete
19590 $\text{The amount of work required to expand the soap bubble from a radius of } r_1 = 3.5 \text{ cm to } r_2 = 7.0 \text{ cm is:}$ $\text{(given surface tension of soap solution, } T = 0.03 \text{ N/m)}$ 1 109 JEE MCQ NEW $0.14 \text{ mJ}$, $1.4 \text{ mJ}$... 4 Edit Delete
19589 $\text{A big drop is divided into 1000 identical droplets. If the big drop had surface energy } U_i \text{ and all small droplets together had a surface energy } U_f, \text{ then } \frac{U_i}{U_f} \text{ is equal to:}$ 1 109 JEE MCQ NEW $\frac{1}{100}$, $10$... 3 Edit Delete
19588 $\text{A water drop of a radius 1 cm is broken into 729 equal droplets. If the surface tension of water is 75 dyne/cm, then the gain in surface energy up to first decimal place will be:}$ $\text{[Given } \pi = 3.14]$ 1 109 JEE MCQ NEW $8.5 \times 10^{-4} \text{ J}$, $8.2 \times 10^{-4} \text{ J}$... 3 Edit Delete
19587 $\text{A small spherical ball of radius } 0.1 \text{ mm and density } 10^4 \text{ kg-m}^{-3} \text{ falls freely under gravity through a distance of } h \text{ before entering a tank of water. If after entering the water, the velocity of the ball does not change and it continues to fall with the same constant velocity inside the water, then the value of } h \text{ will be:}$ $\text{(given } g = 10 \text{ m/s}^2, \text{ the viscosity of water } = 1.0 \times 10^{-5} \text{ N-sm}^{-2})$ 1 109 JEE MCQ NEW $15 \text{ m}$, $25 \text{ m}$... 3 Edit Delete
19586 $\text{A water drop of diameter 2 cm is broken into 64 equal droplets. The surface tension of water is 0.075 N/m. In this process the gain in surface energy will be:}$ $1.\ 2.8 \times 10^{-4} \text{ J}$ $2.\ 1.5 \times 10^{-3} \text{ J}$ $3.\ 1.9 \times 10^{-4} \text{ J}$ $4.\ 9.4 \times 10^{-5} \text{ J}$ 1 109 JEE MCQ NEW $2.8 \times 10^{-4} \text{ J}$, $1.5 \times 10^{-3} \text{ J}$... 1 Edit Delete
19585 $\text{The area of the cross-section of a large tank is } 0.5 \text{ m}^2. \text{ It has a narrow opening near the bottom having an area of cross-section } 1 \text{ cm}^2. \text{ A load of } 25 \text{ kg is applied on the water at the top of the tank. Neglecting the speed of water in the tank, the velocity of the water, coming out of the opening at the time when the height of the water level in the tank is } 40 \text{ cm above the bottom, will be: [Take } g = 10 \text{ ms}^{-2}]$ 1 109 JEE MCQ NEW $1 \text{ ms}^{-1}$, $2 \text{ ms}^{-1}$... 3 Edit Delete
19584 $\text{The velocity of a small ball of mass } m \text{ and density } d_1, \text{ when dropped in a container filled with glycerine, becomes constant after some time. If the density of glycerine is } d_2, \text{ then the viscous force acting on the ball will be:}$ 1 109 JEE MCQ NEW $mg \left( 1 - \frac{d_1}{d_2} \right)$, $mg \left( 1 - \frac{d_2}{d_1} \right)$... 2 Edit Delete
19583 $\text{If } \rho \text{ is the density and } \eta \text{ is the coefficient of viscosity of fluid which flows with a speed } v \text{ in the pipe of diameter } d, \text{ the correct formula for the Reynolds number } R_e \text{ is:}$ 1 109 JEE MCQ NEW $R_e = \frac{\eta d}{\rho v}$, $R_e = \frac{\rho v}{\eta d}$... 3 Edit Delete
19582 $\text{The velocity of the upper layer of water in a river is } 36 \text{ kmh}^{-1}. \text{ Shearing stress between horizontal layers of water is } 10^{-3} \text{ Nm}^{-2}. \text{ The depth of the river is:}$ $\text{(coefficient of viscosity of water is } 10^{-2} \text{ Pa-s)}$ 1 109 JEE MCQ NEW $100 \text{ m}$, $200 \text{ m}$... 1 Edit Delete
19581 $\text{A large number of water drops, each of radius } r, \text{ combine to have a drop of radius } R. \text{ If the surface tension is } T \text{ and mechanical equivalent of heat is } J, \text{ the rise in heat energy per unit volume will be:}$ 1 109 JEE MCQ NEW $\frac{2T}{J} \left( \frac{1}{r} - \frac{1}{R} \right)$, $\frac{2T}{Jr}$... 4 Edit Delete
19580 $\text{A hydraulic press can lift } 100 \text{ kg when a mass } m \text{ is placed on the smaller piston.}$ $\text{If the diameter of the larger piston is increased by a factor of } 4 \text{ and the diameter of the smaller piston is reduced by a factor of } 4,$ $\text{while keeping the same mass } m \text{ on the smaller piston, the press can lift:}$ 1 109 JEE MCQ NEW $2500 \text{ kg}$, $50000 \text{ kg}$... 3 Edit Delete
19579 $\text{A fluid is flowing through a horizontal pipe of varying cross-sections, with speed } v \text{ ms}^{-1} \text{ at a point where the pressure is } P \text{ pascal.}$ $\text{At another point where pressure is } \frac{P}{2} \text{ pascal, its speed is } v \text{ ms}^{-1}. \text{If the density of the fluid is } \rho \text{ kg-m}^{-3} \text{ and the flow is streamlined, then } v \text{ is equal to:}$ 1 109 JEE MCQ NEW $\sqrt{\frac{P}{2\rho} + v^2}$, $\sqrt{\frac{P}{\rho} + v^2}$... 2 Edit Delete
19578 $\text{In an experiment to verify Stokes's law, a small spherical ball of radius } r \text{ and density } \rho \text{ falls under gravity through a distance } h \text{ in air before entering a tank of water.}$ $\text{If the terminal velocity of the ball inside water is the same as its velocity just before entering the water surface, then the value of } h \text{ is proportional to: (Ignore viscosity of air)}$ 1 109 JEE MCQ NEW $r$, $r^4$... 2 Edit Delete
19577 $\text{A hollow spherical shell at the outer radius } R \text{ floats just submerged under the water surface. The inner radius of the shell is } r. \text{ If the specific gravity of the shell material is } \frac{27}{8} \text{ with respect to water, the value of } r \text{ is: } \left[ \text{Given: } \left( 19^{\frac{1}{3}} = \frac{8}{3} \right) \right]$ 1 109 JEE MCQ NEW $\frac{4}{9} R$, $\frac{8}{9} R$... 2 Edit Delete
19576 $\text{Two identical cylindrical vessels are kept on the ground and each contain the same liquid of density } d. \text{ The area of the base of both vessels is } S \text{ but the height of liquid in one vessel is } x_1 \text{ and in the other, } x_2. \text{ When both cylinders are connected through a pipe of negligible volume very close to the bottom, the liquid flows one vessel to the other until it comes to equilibrium at a new height. The change in energy of the system in the process is:}$ 1 109 JEE MCQ NEW $\frac{3}{4} gdS(x_2 - x_1)^2$, $\frac{1}{4} gdS(x_2 - x_1)^2$... 2 Edit Delete
19575 $\text{A air bubble of radius } 1 \text{ cm in water has an upward acceleration } 9.8 \text{ cm/s}^2. \text{ The density of water is } 1 \text{ gm/cm}^3 \text{ and water offers negligible drag force on the bubble. The mass of the bubble is: } (g = 980 \text{ cm/s}^2)$ 1 109 JEE MCQ NEW $3.15 \text{ gm}$, $1.52 \text{ gm}$... 4 Edit Delete
19574 $\text{When a long glass capillary tube of radius } 0.015 \text{ cm is dipped in a liquid, the liquid rises to a height of } 15 \text{ cm within it.}$ $\text{If the contact angle between the liquid and glass to close to } 0^\circ, \text{ the surface tension of the liquid, in milliNewton m}^{-1}, \text{ is:}$ $\left[ \rho(\text{liquid}) = 900 \text{ kgm}^{-3}, \ g = 10 \text{ ms}^{-2} \right] \text{ (Give answer in closest integer).}$ 1 109 JEE MCQ NEW $200$, $101$... 2 Edit Delete
19573 $\text{A capillary tube made of glass of radius } 0.15 \text{ mm is dipped vertically in a beaker filled with methylene iodide (surface tension } T = 0.05 \text{ Nm}^{-1}, \text{ density } \rho = 667 \text{ kg m}^{-3}) \text{ which rises to height } h \text{ in the tube.}$ $\text{It is observed that the two tangents drawn from liquid-glass interfaces (from opp. sides of the capillary) make an angle of } 60^\circ \text{ with one another.}$ $\text{Then } h \text{ is close to:}$ $\text{(take } g = 10 \text{ m/s}^2)$ 1 109 JEE MCQ NEW $0.137 \text{ m}$, $0.172 \text{ m}$... 3 Edit Delete
19572 $\text{A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The radius of vessel is } 5 \text{ cm and the angular speed of rotation is } \omega \text{ rads}^{-1}. \text{ The difference in the height, } h \text{ (in cm) of liquid at the centre of vessel and at the side will be:}$ 1 109 JEE MCQ NEW $\frac{25\omega^2}{2g}$, $\frac{2\omega^2}{5g}$... 1 Edit Delete
19571 $\text{A solid sphere, of radius } R, \text{ acquires a terminal velocity } v_1 \text{ when falling (due to gravity) through a viscous fluid having a coefficient of viscosity } \eta. \text{ The sphere is broken into } 27 \text{ identical solid spheres.}$ $\text{If each of these spheres acquires a terminal velocity, } v_2, \text{ when falling through the same fluid, the ratio } \left( \frac{v_1}{v_2} \right) \text{ equals:}$ 1 109 JEE MCQ NEW $\frac{1}{9}$, $\frac{1}{27}$... 3 Edit Delete
19570 $\text{A cubical block of side } 0.5 \text{ m floats on water with } 30\% \text{ of its volume under water.}$ $\text{What is the maximum weight that can be put on the block without fully submerging it underwater?}$ $\text{(take, density of water } = 10^3 \text{ kg/m}^3)$ 1 109 JEE MCQ NEW $30.1 \text{ kg}$, $87.5 \text{ kg}$... 2 Edit Delete
19569 $\text{A submarine experiences a pressure of } 5.05 \times 10^6 \text{ Pa at a depth of } d_1 \text{ in a sea.}$ $\text{When it goes further to a depth of } d_2, \text{ it experiences a pressure of } 8.08 \times 10^6 \text{ Pa.}$ $\text{Then } d_2 - d_1 \text{ is approximately: (density of water } = 10^3 \text{ kg/m}^3 \text{ and acceleration due to gravity } = 10 \text{ m/s}^2)$ 1 109 JEE MCQ NEW $600 \text{ m}$, $400 \text{ m}$... 3 Edit Delete
19568 $\text{Water from a tap emerges vertically downwards with an initial speed of } 1.0 \text{ m/s.}$ $\text{The cross-sectional area of the tap is } 10^{-4} \text{ m}^2.$ $\text{Assume that the pressure is constant throughout the stream of water and that the flow is streamlined.}$ $\text{The cross-sectional area of the stream, } 0.15 \text{ m below the tap would be:}$ $\text{(Take } g = 10 \text{ m/s}^2)$ 1 109 JEE MCQ NEW $5 \times 10^{-4} \text{ m}^2$, $2 \times 10^{-5} \text{ m}^2$... 3 Edit Delete
19567 $\text{A wooden block is initially floating in a bucket of water with } \frac{4}{5} \text{ of its volume submerged.}$ $\text{When a certain amount of oil is poured into the bucket, the block is found to be just under the oil surface with half of its volume submerged in water and half in oil.}$ $\text{What is the density of the oil relative to that of water?}$ 1 109 JEE MCQ NEW $0.7$, $0.5$... 4 Edit Delete
19566 $\text{If } M \text{ is the mass of water that rises in a capillary tube of radius } r, \text{ then mass of water which will rise in a capillary tube of radius } 2r \text{ is:}$ 1 109 JEE MCQ NEW $M$, $4M$... 4 Edit Delete
19565 $\text{Water from a pipe is coming at a rate of 100 liters per minute. If the radius of the pipe is 5 cm, the Reynolds number for the flow is of the order of- (density of water = 1000 kg/m}^3\text{, coefficient of viscosity of water = 1 m Pa s)}$ 1 109 JEE MCQ NEW $10^4$, $10^3$... 1 Edit Delete
19564 $\text{If it takes } 5 \text{ minutes to fill a } 15 \text{ litre bucket from a water tap of diameter } \frac{2}{\sqrt{\pi}} \text{ cm, then the Reynolds number for the flow is:}$ $\text{(density of water } = 10^3 \text{ kg/m}^3 \text{ and viscosity of water } = 10^{-3} \text{ Pa.s)}$ 1 109 JEE MCQ NEW $11,000$, $550$... 4 Edit Delete
19563 $\text{If the area of the cross-section is halved and the length of the wire having Young's modulus } Y \text{ is doubled, then its Young's modulus will become:}$ 1 108 JEE MCQ NEW $Y$, $4Y$... 1 Edit Delete
19562 $\text{A rod is fixed at one end and other end is pulled with force } F = 62.8 \text{ kN, Young's modulus of rod is } 2 \times 10^{11} \text{ N/m}^2. \text{ If the radius of cross-section of rod is } 20 \text{ mm the strain produced in rod is}$ 1 108 JEE MCQ NEW $2.5 \times 10^{-3}$, $2.5 \times 10^{-4}$... 2 Edit Delete
19561 $\text{A wire of length } l, \text{ cross-sectional area } A \text{ is pulled as shown. } Y \text{ is Young's modulus of wire. The elongation in wire is:}$ $\left(F = 100 \text{ N}, A = 10 \text{ cm}^2, l = 1 \text{ m}, Y = 5 \times 10^{10} \text{ N/m}^2\right)$ 1 108 JEE MCQ NEW $10^{-6} \text{ m}$, $10^{-5} \text{ m}$... 3 Edit Delete
19560 $\text{Choose the option showing the correct relation between Poisson's ratio } (\sigma), \text{ Bulk modulus } (B), \text{ and Modulus of rigidity } (G).$ 1 108 JEE MCQ NEW $\sigma = \frac{3B - 2G}{2G + 6B}$, $\sigma = \frac{6B + 2G}{3B - 2G}$... 1 Edit Delete
19559 $\text{If the length of a wire is doubled and its radius is halved compared to their respective initial values, then, Young's modulus of the material of the wire will:}$ 1 108 JEE MCQ NEW $\text{remain the same.}$, $\text{become 8 times its initial value.}$... 1 Edit Delete
19558 $\text{The force required to stretch a wire of cross-section } 1 \text{ cm}^2 \text{ to double its length will be:}$ $\text{(Given Young's modulus of the wire } = 2 \times 10^{11} \text{ N/m}^2)$ 1 108 JEE MCQ NEW $1.1 \times 10^7 \text{ N}$, $1.5 \times 10^7 \text{ N}$... 3 Edit Delete
19557 $\text{A square aluminium (shear modulus is } 25 \times 10^9 \text{ Nm}^{-2}\text{) slab of side } 60 \text{ cm and thickness of } 15 \text{ cm is subjected to a shearing force (on its narrow face) of } 18.0 \times 10^4 \text{ N. The lower edge is riveted to the floor. The displacement of the upper edge is:}$ $1.\ 30\ \mu\text{m}$ $2.\ 48\ \mu\text{m}$ $3.\ 16\ \mu\text{m}$ $4.\ 64\ \mu\text{m}$ 1 108 JEE MCQ NEW $30\ \mu\text{m}$, $48\ \mu\text{m}$... 2 Edit Delete
19556 $\text{A wire of length } L \text{ and radius } r \text{ is clamped rigidly at one end. When the other end of the wire is pulled by a force } F, \text{ its length increases by } 5 \text{ cm.}$ $\text{Another wire of the same material of length } 4L \text{ and radius } 4r \text{ is pulled by a force } 4F \text{ under the same conditions. The increase in length of this wire is:}$ 1 108 JEE MCQ NEW $3 \text{ cm}$, $5 \text{ cm}$... 2 Edit Delete
19555 $\text{A wire of natural length } L \text{ is suspended vertically from a fixed point.}$ $\text{The length changes to } L_1 \text{ and } L_2 \text{ when masses 1 kg and 2 kg are}$ $\text{suspended, respectively, from its free end. The value of } L \text{ is:}$ 1 108 JEE MCQ NEW $\sqrt{L_1 L_2}$, $\frac{L_1 + L_2}{2}$... 3 Edit Delete
19554 $\text{The bulk modulus of a liquid is } 3 \times 10^{10} \text{ Nm}^{-2}. \text{ The pressure required to reduce the volume of liquid by } 2\% \text{ is:}$ 1 108 JEE MCQ NEW $3 \times 10^8 \text{ Nm}^{-2}$, $9 \times 10^8 \text{ Nm}^{-2}$... 3 Edit Delete
19553 $\text{A uniform metallic wire is elongated by } 0.04 \text{ m when subjected to a linear force } F. \text{ The elongation, if its length and diameter are doubled and subjected to the same force will be:}$ 1 108 JEE MCQ NEW $1 \text{ cm}$, $2 \text{ cm}$... 2 Edit Delete
19552 $\text{A body of mass } m = 10 \text{ kg is attached to one end of a wire of length } 0.3 \text{ m.}$ $\text{The maximum angular speed (in } \text{rad s}^{-1}\text{) with which it can be rotated about its other end in the space station is:}$ $\text{(Breaking stress of wire } = 4.8 \times 10^7 \text{ Nm}^{-2} \text{ and area of cross-section of the wire } = 10^{-2} \text{ cm}^{-2})$ 1 108 JEE MCQ NEW $4 \text{ rad s}^{-1}$, $6 \text{ rad s}^{-1}$... 1 Edit Delete
19551 $\text{Two forces } F_1 \text{ and } F_2 \text{ are applied on two rods } P \text{ and } Q \text{ of the same materials such that elongation in rods are same.}$ $\text{If the ratio of their radii is } x : y \text{ and the ratio of length is } m : n, \text{ then the ratio of forces } F_1 : F_2 \text{ is:}$ 1 108 JEE MCQ NEW $\left( \frac{y}{x} \right)^2 \frac{n}{m}$, $\left( \frac{x}{y} \right)^2 \frac{n}{m}$... 2 Edit Delete
19550 $\text{A uniform wire has length } L \text{ and radius } r. \text{ It is acted on by a force } F \text{ as shown. The elongation is } \Delta L. \text{ If } F \text{ and } r \text{ are both halved, then the new elongation will be:}$ 1 108 JEE MCQ NEW $\frac{\Delta L}{2}$, $\Delta L$... 4 Edit Delete
19549 $\text{A sphere of small size is at the bottom of a lake of depth } 200 \text{ m. Due to pressure its fractional change in volume is } \alpha \times 10^{-7}. \text{ What is the value of } \alpha, \text{ if the bulk modulus of the sphere is } 5 \times 10^{12} \text{ Pa? (Use } g = 10 \text{ m/s}^2)$ 1 108 JEE MCQ NEW $5$, $4$... 2 Edit Delete
19548 $\text{Wire } A \text{ and } B \text{ have their Young's moduli in the ratio } 1:3 \text{, area of the cross-section in the ratio of } 1:2 \text{ and lengths in the ratio of } 3:4. \text{ If the same force is applied on the two wires to elongate then the ratio of elongation is equal to:}$ $1.\ 8:1$ $2.\ 1:12$ $3.\ 1:8$ $4.\ 9:2$ 1 108 JEE MCQ NEW $8:1$, $1:12$... 4 Edit Delete
19547 $\text{Two blocks, one with a mass of } 2 \text{ kg and the other with a mass of } 1.14 \text{ kg, are suspended by steel and brass wires, respectively, as shown in the figure. Given Young's moduli for steel and brass as } 2 \times 10^{11} \text{ N/m}^2 \text{ and } 1 \times 10^{11} \text{ N/m}^2 \text{ respectively, what is the change in the length for the steel wire?}$ 1 108 JEE MCQ NEW $3.2 \ \mu \text{m}$, $1.6 \ \mu \text{m}$... 1 Edit Delete
19546 $\text{A uniform rod of mass } 10 \text{ kg and length } 6 \text{ m is hanged from the ceiling as shown in the figure.}$ $\text{Given the area of the cross-section of rod } 3 \text{ mm}^2 \text{ and Young's modulus is } 2 \times 10^{11} \text{ N/m}^2.$ $\text{The extension in the rod's length is:}$ $\text{(Take } g = 10 \text{ m/s}^2)$ 1 108 JEE MCQ NEW $1 \text{ mm}$, $0.5 \text{ mm}$... 2 Edit Delete
19545 $\text{A metal wire of length } 0.5 \text{ m and cross-sectional area } 10^{-4} \text{ m}^2 \text{ has breaking stress } 5 \times 10^8 \text{ Nm}^{-2}. \text{ A block of } 10 \text{ kg is attached at one end of the string and is rotating in a horizontal circle. The maximum linear velocity of the block will be:}$ $1. \ 15 \ \text{m/s}$ $2. \ 50 \ \text{m/s}$ $3. \ 25 \ \text{m/s}$ $4. \ 40 \ \text{m/s}$ 1 108 JEE MCQ NEW $15 \ \text{m/s}$, $50 \ \text{m/s}$... 2 Edit Delete
19544 $\text{In an experiment to determine Young's modulus, steel wires of five different lengths (} 1, 2, 3, 4 \text{ and } 5 \text{ m) but of the same cross-section (} 2 \text{ mm}^2) \text{ were taken and curves between extension and load were obtained. The slope (extension/load) of the curves was plotted with the wire length and the following graph is obtained. If Young's modulus of a given steel wire is } x \times 10^{11} \text{ N/m}^2, \text{ then the value of } x \text{ is:}$ 1 108 JEE MCQ NEW $1$, $2$... 2 Edit Delete
19543 $\text{A steel wire of length } 3.2 \text{ m } (Y_S = 2.0 \times 10^{11} \text{ N m}^{-2}) \text{ and a copper wire of length } 4.4 \text{ m } (Y_C = 1.1 \times 10^{11} \text{ N m}^{-2}), \text{ both having a radius } 1.4 \text{ mm, are connected end to end.}$ $\text{When a load is applied, the net stretch of the combined wires is found to be } 1.4 \text{ mm.}$ $\text{The magnitude of the load applied, in Newtons, will be: } \left( \text{use, } \pi = \frac{22}{7} \right)$ 1 108 JEE MCQ NEW 360, 180... 4 Edit Delete
19542 $\text{A uniform heavy rod of mass } 20 \text{ kg, cross-sectional area of } 0.4 \text{ m}^2 \text{ and length of } 20 \text{ m is hanging from a fixed support. Neglecting the lateral contraction, the elongation in the rod due to its own weight is:}$ $\text{(Given: Young's modulus } Y = 2 \times 10^{11} \text{ N-m}^{-2} \text{ and } g = 10 \text{ ms}^{-2})$ 1 108 JEE MCQ NEW $12 \times 10^{-9} \text{ m}$, $30 \times 10^{-9} \text{ m}$... 3 Edit Delete
19541 $\text{The area of cross-section of the rope used to lift a load by a crane is } 2.5 \times 10^{-4} \text{ m}^2. \text{ The maximum lifting capacity of the crane is } 10 \text{ metric tons.}$ $\text{To increase the lifting capacity of the crane to } 25 \text{ metric tons, the required area of the cross-section of the rope should be: (Take } g = 10 \text{ ms}^{-2})$ 1 108 JEE MCQ NEW $6.25 \times 10^{-4} \text{ m}^2$, $10 \times 10^{-4} \text{ m}^2$... 1 Edit Delete
19540 $\text{The elongation of a wire on the surface of the Earth is } 10^{-4} \text{ m. The same wire, of the same dimensions, elongates by } 6 \times 10^{-5} \text{ m on another planet. The acceleration due to gravity on the planet will be:}$ $\text{(take acceleration due to gravity on the surface of the Earth as } 10 \text{ m s}^{-2})$ 1 108 JEE MCQ NEW $5 \text{ ms}^{-2}$, $6 \text{ ms}^{-2}$... 2 Edit Delete
19539 $\text{The elastic behaviour of a material for linear stress and linear strain is captured in the graph below. The energy density, for a linear strain of } 5 \times 10^{-4} \text{ is:}$ $\text{(assume that the material is elastic up to the linear strain of } 5 \times 10^{-4})$ 1 108 JEE MCQ NEW $15 \text{ kJ/m}^3$, $20 \text{ kJ/m}^3$... 3 Edit Delete
19538 $\text{The length of a metallic wire is } l_1, \text{ when the tension in it is } T_1 \text{ and is } l_2 \text{ when the tension is } T_2. \text{ The original (natural) length of the wire is:}$ 1 108 JEE MCQ NEW $\frac{l_1 + l_2}{2}$, $\frac{T_2 l_1 + T_1 l_2}{T_1 + T_2}$... 3 Edit Delete
19537 $\text{The normal density of a material is } \rho \text{ and its bulk modulus of elasticity is } K. \text{ The magnitude of the increase in the density of material when a pressure } P \text{ is applied uniformly on all sides, will be:}$ 1 108 JEE MCQ NEW $\frac{\rho K}{P}$, $\frac{\rho P}{K}$... 2 Edit Delete
19536 $\text{A cube of metal is subjected to a hydrostatic pressure of } 4 \text{ GPa. The percentage change in the length of the side of the cube is close to:}$ $\text{(Given bulk modulus of metal, } B = 8 \times 10^{10} \text{ Pa)}$ 1 108 JEE MCQ NEW $5$, $20$... 4 Edit Delete
19535 $\text{The elastic limit of brass is } 400 \text{ MPa. What should be the minimum diameter of a brass rod if it is to support a } 400\pi \text{ N load without exceeding its elastic limit?}$ $1. \ 1 \text{ mm}$ $2. \ 1.5 \text{ mm}$ $3. \ 2 \text{ mm}$ $4. \ 2.5 \text{ mm}$ 1 108 JEE MCQ NEW $1 \text{ mm}$, $1.5 \text{ mm}$... 3 Edit Delete
19534 $\text{In an experiment, brass and steel wires of length } 1 \text{ m each with areas of cross section } 1 \text{ mm}^2 \text{ are used.}$ $\text{The wires are connected in series and one end of the combined wire is connected to a rigid support and the other end is subjected to elongation.}$ $\text{The stress required to produce a net elongation of } 0.2 \text{ mm is,}$ $\text{[Given, the Young's Modulus for steel and brass are, respectively, } 120 \times 10^9 \text{ N/m}^2 \text{ and } 60 \times 10^9 \text{ N/m}^2]}$ 1 108 JEE MCQ NEW $4.0 \times 10^6 \text{ N/m}^2$, $1.2 \times 10^6 \text{ N/m}^2$... 4 Edit Delete
19533 $\text{Young's moduli of two wires } A \text{ and } B \text{ are in the ratio } 10 : 4.$ $\text{Wire } A \text{ is } 2 \text{ m long and has radius } R.$ $\text{Wire } B \text{ is } 1.6 \text{ m long and has radius } 2 \text{ mm}.$ $\text{If the two wires stretch by the same length for a given load,}$ $\text{then the value of } R \text{ is close to:}$ 1 108 JEE MCQ NEW $\sqrt{2} \text{ mm}$, $\frac{1}{\sqrt{2}} \text{ mm}$... 1 Edit Delete
19532 $\text{A boy's catapult is made of rubber cord which is } 42 \text{ cm long, with } 6 \text{ mm diameter of a cross-section and of negligible mass. The boy keeps a stone weighing } 0.02 \text{ kg on it and stretches the cord by } 20 \text{ cm by applying a constant force. When released, the stone flies off with a velocity of } 20 \text{ ms}^{-1}. \text{ Neglect the change in the area of cross-section of the cord while stretched. The Young's modulus of rubber is closest to:}$ 1 108 JEE MCQ NEW $10^3 \text{ Nm}^{-2}$, $10^4 \text{ Nm}^{-2}$... 3 Edit Delete
19531 $\text{A steel wire having a radius of } 2.0 \text{ mm, carrying a load of } 4 \text{ kg, is hanging from a ceiling. Given that } g = 3.1\pi \text{ m/s}^2, \text{ what will be the tensile stress that would be developed in the wire?}$ 1 108 JEE MCQ NEW $5.2 \times 10^6 \text{ N/m}^2$, $6.2 \times 10^6 \text{ N/m}^2$... 4 Edit Delete
19530 $\text{A solid sphere of radius } r \text{ made of a soft material of bulk modulus } K$ $\text{is surrounded by a liquid in a cylindrical container. A massless piston}$ $\text{of area } a \text{ floats on the surface of the liquid, covering the entire cross-section}$ $\text{of the cylindrical container. When a mass } m \text{ is placed on the}$ $\text{surface of the piston to compress the liquid, the fractional decrement}$ $\text{in the radius of the sphere, } \left( \frac{dr}{r} \right) \text{ is:}$ 1 108 JEE MCQ NEW $\frac{Ka}{mg}$, $\frac{Ka}{3mg}$... 3 Edit Delete
19529 $\text{A man transforms into a giant such that all his linear dimensions become 9 times their original values. Assuming his density remains unchanged, the stress on his legs changes by a factor of:}$ 1 108 JEE MCQ NEW $9$, $\frac{1}{9}$... 1 Edit Delete
19528 $\text{A satellite of } 103 \text{ kg mass is revolving in circular orbit of radius } 2R. \text{ If } \frac{10^4R}{6} \text{ J energy is supplied to the satellite, it would revolve in a new circular orbit of radius: (use } g = 10 \text{ m/s}^2, R = \text{ radius of earth})$ 1 107 JEE MCQ NEW $2.5 R$, $6 R$... 2 Edit Delete
19527 $\text{An astronaut takes a ball of mass } m \text{ from earth to space. He throws the ball into a circular orbit about earth at an altitude of } 318.5 \text{ km.}$ $\text{From earth's surface to the orbit, the change in total mechanical energy of the ball is } x \frac{G M_e m}{21 R_e}. \text{ The value of } x \text{ is (take } R_e = 6370 \text{ km)}$ 1 107 JEE MCQ NEW $11$, $10$... 1 Edit Delete
19526 $\text{Two planets } A \text{ and } B \text{ having masses } m_1 \text{ and } m_2 \text{ move around the sun in circular orbits of } r_1 \text{ and } r_2 \text{ radii respectively.}$ $\text{If angular momentum of } A \text{ is } L \text{ and that of } B \text{ is } 3L, \text{ the ratio of time period } (T_A/T_B) \text{ is:}$ 1 107 JEE MCQ NEW $\frac{1}{27} \left( \frac{m_2}{m_1} \right)^3$, $\left( \frac{r_1}{r_2} \right)^3$... 1 Edit Delete
19525 $\text{Assuming the earth to be a sphere of uniform mass density, a body weighed } 300 \text{ N on the surface of earth. How much it would weight at } \frac{R}{4} \text{ depth under surface of earth?}$ 1 107 JEE MCQ NEW $300 \text{ N}$, $75 \text{ N}$... 3 Edit Delete
19524 $\text{To project a body of mass } m \text{ from earth's surface to infinity, the required kinetic energy is (assume, the radius of earth is } R_E, g = \text{acceleration due to gravity on the surface of earth):}$ 1 107 JEE MCQ NEW $mgR_E$, $\frac{1}{2}mgR_E$... 1 Edit Delete
19523 $\text{A 90 kg body placed at } 2R \text{ distance from surface of earth experiences gravitational pull of } (R = \text{Radius of earth}, g = 10 \text{ ms}^{-2})$ 1 107 JEE MCQ NEW $100 \text{ N}$, $300 \text{ N}$... 1 Edit Delete
19522 $\text{Correct formula for height of a satellite from earth's surface is -}$ 1 107 JEE MCQ NEW $\left( \frac{T^2 R^2 g}{4 \pi^2} \right)^{1/3} - R$, $\left( \frac{T^2 R^2 g}{4 \pi} \right)^{1/2} - R$... 1 Edit Delete
19521 $\text{Suppose a situation in which two planet orbits around the sun in the same orbit. If the mass of planet 1 is twice the mass of planet 2, then what do they have same?}$ $1. \text{Potential energy}$ $2. \text{Kinetic energy}$ $3. \text{Total energy}$ $4. \text{Velocity}$ 1 107 JEE MCQ NEW $\text{Potential energy}$, $\text{Kinetic energy}$... 4 Edit Delete
19520 $\text{A satellite is moving around earth surface. How much minimum speed should be increased so that it escapes from earth surface?}$ $\text{(g = acceleration due to gravity, R = radius of earth)}$ 1 107 JEE MCQ NEW $2\sqrt{gR}$, $\left(\sqrt{2} - 1\right)\sqrt{gR}$... 2 Edit Delete
19519 $\text{If a planet } A' \text{ has density } \rho \text{ and radius } r, \text{ planet } B' \text{ has density } \frac{\rho}{3} \text{ and radius } 4r. \text{ Then, find ratio of their acceleration due to gravity at their surface}$ 1 107 JEE MCQ NEW $3 : 4$, $4 : 3$... 1 Edit Delete
19518 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):}$ $\text{Assertion (A): Acceleration due to gravity is minimum at equator.}$ $\text{Reason (R): Rotation of earth influences acceleration.}$ $\text{In the light of the above statements choose the correct answer from the options given below:}$ 1 107 JEE MCQ NEW $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19517 $\text{If the time period for one revolution by satellite near the Earth's surface is } T, \text{ then, the time period of revolution of the satellite at a height equal to the radius of the Earth will be:}$ 1 107 JEE MCQ NEW $\sqrt{8} \, T$, $\sqrt{2} \, T$... 1 Edit Delete
19516 $\text{The mass and radius of orbit for the two satellites are } (m, r) \text{ and } (3m, 3r) \text{ respectively. What will be the ratio of their orbital velocity about the Earth?}$ 1 107 JEE MCQ NEW $\sqrt{3} : 1$, $1 : \sqrt{3}$... 1 Edit Delete
19515 $\text{An object weighs } 200 \ N \text{ at the surface of earth. Find the weight at a depth of } \frac{R}{2}, \text{ where } R \text{ is the radius of earth.}$ 1 107 JEE MCQ NEW $100 \ N$, $300 \ N$... 1 Edit Delete
19514 $\text{Which of the following expressions gives the value of acceleration}$ $\text{due to gravity } (g') \text{ at the altitude } h \text{ above the surface of the Earth?}$ $(R : \text{radius of Earth}; g : \text{acceleration due to gravity at the surface of Earth})$ 1 107 JEE MCQ NEW $g' = g \frac{h^2}{R^2}$, $g' = \frac{gR^2}{(R+h)^2}$... 2 Edit Delete
19513 $\text{If } W \text{ is the weight on the surface of the Earth, then the weight of the same body at a height of } \frac{R_e}{4} \text{ above the surface of Earth is equal to: } (R_e = \text{radius of Earth})$ 1 107 JEE MCQ NEW $\frac{4}{5}W$, $\frac{16}{25}W$... 2 Edit Delete
19512 $\text{On a planet } \rho \text{ (mass density) is same as that of earth while mass of planet is twice than that of earth. Ratio of weight of a body on surface of planet to that on earth is equal to:}$ $1.\ 1$ $2.\ (2)^{1/3}$ $3.\ (2)^{-1/3}$ $4.\ 2$ 1 107 JEE MCQ NEW $1$, $(2)^{1/3}$... 2 Edit Delete
19511 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):}$ $\text{Assertion (A): Earth has atmosphere and moon doesn’t.}$ $\text{Reason (R): Escape speed on moon is less than that of earth.}$ $\text{In the light of the above statements choose the correct answer from the options given below:}$ 1 107 JEE MCQ NEW $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19510 $\text{The ratio of acceleration due to gravity on the surface of planet 1 and planet 2 is } x \text{ while the ratio of radii of respective planets is } y. \text{ The ratio of respective escape velocity on the surface of planet 1 and planet 2 is equal to:}$ 1 107 JEE MCQ NEW $\sqrt{\frac{x}{y}}$, $\frac{x}{y}$... 3 Edit Delete
19509 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{The value of acceleration due to gravity is same at all the points inside earth assuming it to be made up of uniform density.}$ $\text{Statement II:}$ \text{The value of gravitational field increases as we go towards centre in a uniform spherical shell.}$ 1 107 JEE MCQ NEW $\text{Both Statement I and Statement II are True.}$, $\text{Statement I is True but Statement II is False.}$... 4 Edit Delete
19508 $\text{A body has weight } W \text{ on the surface of earth. What is the weight at a height } 9 \text{ times the radius of the earth?}$ 1 107 JEE MCQ NEW $\frac{W}{100}$, $\frac{W}{81}$... 1 Edit Delete
19507 $\text{What is the ratio of acceleration due to gravity at an altitude } h = R$ $\text{to the value at the surface of the earth? (where } R = \text{radius of earth})$ 1 107 JEE MCQ NEW $1 : 2$, $1 : 4$... 2 Edit Delete
19506 $\text{An object of mass } 1 \text{ kg is taken to a height from the surface of the Earth which is equal to three times the Earth's radius. The gain in potential energy of the object will be:}$ $\text{(Given: } g = 10 \text{ ms}^{-2} \text{ and radius of Earth } = 6400 \text{ km)}$ 1 107 JEE MCQ NEW $48 \text{ MJ}$, $24 \text{ MJ}$... 1 Edit Delete
19505 $\text{If the acceleration due to gravity experienced by a point mass at a height } h \text{ above the surface of the earth is the same as that of the acceleration due to gravity at a depth } \alpha h \,(h \ll R_e) \text{ from the earth's surface. The value of } \alpha \text{ will be:}$ $\text{(Use } R_e = 6400 \text{ km)}$ 1 107 JEE MCQ NEW 1, 2... 2 Edit Delete
19504 $\text{If the radius of the earth shrinks by } 2\% \text{ while its mass remains the same. The acceleration due to gravity on the earth's surface will approximately:}$ 1 107 JEE MCQ NEW $\text{decrease by } 2\%$, $\text{decrease by } 4\%$... 4 Edit Delete
19503 $\text{A body of mass } m \text{ is projected with velocity } \lambda v_e \text{ in vertically upward}$ $\text{direction from the surface of the earth into space. It is given that } v_e \text{ is}$ $\text{escape velocity and } \lambda < 1. \text{ If air resistance is considered to be}$ $\text{negligible, then the maximum height from the centre of earth, to}$ $\text{which the body can go, will be: } (R: \text{ radius of earth})$ 1 107 JEE MCQ NEW $\frac{R}{1+\lambda^2}$, $\frac{R}{1-\lambda^2}$... 2 Edit Delete
19502 $\text{Two satellites, } A \text{ and } B, \text{ have masses in the ratio of } 4 : 3 \text{ and are revolving in circular orbits with radii } 3r \text{ and } 4r \text{ respectively around the Earth. The ratio of the total mechanical energy of the satellite } A \text{ to that of the satellite } B \text{ is:}$ 1 107 JEE MCQ NEW $9 : 16$, $16 : 9$... 2 Edit Delete
19501 $\text{An object is taken to a height above the surface of earth at a distance } \frac{5}{4} R \text{ from the centre of the earth. Where radius of earth, } R = 6400 \text{ km. The percentage decrease in the weight of the object will be:}$ 1 107 JEE MCQ NEW $36\%$, $50\%$... 1 Edit Delete
19500 $\text{The time period of a satellite revolving around the Earth in a given orbit is } 7 \text{ hours.}$ $\text{If the radius of the orbit is increased to three times its previous value,}$ $\text{then the approximate new time period of the satellite will be:}$ 1 107 JEE MCQ NEW $40 \text{ hours}$, $36 \text{ hours}$... 2 Edit Delete
19499 $\text{The escape velocity of a body on a planet } A \text{ is } 12 \text{ kms}^{-1}. \text{ The escape velocity of the body on another planet } B, \text{ whose density is four times and radius is half of the planet } A, \text{ is:}$ 1 107 JEE MCQ NEW $12 \text{ kms}^{-1}$, $24 \text{ kms}^{-1}$... 1 Edit Delete
19498 $\text{Two objects of equal masses placed at certain distance from each other attracts each other with a force of } F. \text{ If one-third mass of one object is transferred to the other object, then the new force will be:}$ 1 107 JEE MCQ NEW $\frac{2}{9}F$, $\frac{16}{9}F$... 3 Edit Delete
19497 $\text{Given below are two statements:}$ $\text{Statement I: The law of gravitation holds good for any pair of bodies in the universe.}$ $\text{Statement II: The weight of any person becomes zero when the person is at the centre of the earth.}$ 1 107 JEE MCQ NEW $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 2 Edit Delete
19496 $\text{The height of point } P \text{ above the surface of the earth is equal to the diameter of the earth.}$ $\text{The value of acceleration due to gravity at point } P \text{ will be:}$ $\text{(Given } g = \text{ acceleration due to gravity at the surface of the earth)}$ 1 107 JEE MCQ NEW $\frac{g}{2}$, $\frac{g}{4}$... 4 Edit Delete
19495 $\text{The distance between Sun and Earth is } R. \text{ The duration of the year if the distance between Sun and Earth becomes } 3R \text{ will be:}$ 1 107 JEE MCQ NEW $\sqrt{3} \text{ years}$, $3 \text{ years}$... 4 Edit Delete
19494 $\text{The approximate height from the surface of the earth at which the weight of the body becomes } \frac{1}{3} \text{ of its weight on the surface of the earth is: [Radius of earth } R = 6400 \text{ km and } \sqrt{3} = 1.732]$ 1 107 JEE MCQ NEW $3840 \text{ km}$, $4685 \text{ km}$... 2 Edit Delete
19493 $\text{The mass density of a planet of radius } R \text{ varies with the distance } r$ $\text{from its centre as } \rho(r) = \rho_0 \left(1 - \frac{r^2}{R^2}\right)$ $\text{Then the gravitational field is maximum at:}$ 1 107 JEE MCQ NEW $r = \sqrt{\frac{3}{4}} R$, $r = \sqrt{\frac{5}{9}} R$... 2 Edit Delete
19492 $\text{If the angular momentum of a planet of mass } m, \text{ moving around the sun in a circular orbit is } L \text{ about the center of the sun, its areal velocity is:}$ 1 107 JEE MCQ NEW $\frac{L}{m}$, $\frac{4L}{m}$... 3 Edit Delete
19491 $\text{A solid sphere of mass } 'M' \text{ and radius } 'a' \text{ is surrounded by a uniform concentric spherical shell of thickness } 2a \text{ and mass } 2M. \text{ The gravitational field at distance } '3a' \text{ from the centre will be:}$ 1 107 JEE MCQ NEW $\frac{GM}{9a^2}$, $\frac{2GM}{9a^2}$... 4 Edit Delete
19490 $\text{A rocket has to be launched from earth in such a way that it never returns. If } E \text{ is the minimum energy delivered by the rocket launcher, what should be the minimum energy that the launcher should have if the same rocket is to be launched from the surface of the moon? Assume that the density of the earth and the moon are equal and that the earth's volume is } 64 \text{ times the volume of the moon.}$ 1 107 JEE MCQ NEW $\frac{E}{4}$, $\frac{E}{32}$... 3 Edit Delete
19489 $\text{The relative uncertainty in the period of a satellite orbiting around the earth is } 10^{-2}. \text{ If the relative uncertainty in the radius of the orbit is negligible, the relative uncertainty in the mass of the earth is:}$ 1 107 JEE MCQ NEW $2 \times 10^{-2}$, $6 \times 10^{-2}$... 1 Edit Delete
19488 $\text{Take the mean distance of the moon and the sun from the earth to be } 0.4 \times 10^6 \text{ km and } 150 \times 10^6 \text{ km respectively. Their masses are } 8 \times 10^{22} \text{ kg and } 2 \times 10^{30} \text{ kg respectively. The radius of the earth is } 6400 \text{ km. Let } \Delta F_1 \text{ be the difference in the forces exerted by the moon at the nearest and farthest point on the earth and } \Delta F_2 \text{ be the difference in the force exerted by the sun at the nearest and farthest points on the earth. Then, the number closest to } \frac{\Delta F_1}{\Delta F_2} \text{ is:}$ 1 107 JEE MCQ NEW $6$, $10^{-2}$... 3 Edit Delete
19487 $\text{A body of mass } m \text{ is moving in a circular orbit of radius } R \text{ about a planet of mass } M. \text{ At some instant, it splits into two equal masses.}$ $\text{The first mass moves in a circular orbit of radius } \frac{R}{2}, \text{ and the other mass, in a circular orbit of radius } \frac{3R}{2}. \text{ The difference between the final and initial total energies is:}$ 1 107 JEE MCQ NEW $+\frac{Gm}{6R}$, $-\frac{GMm}{2R}$... 3 Edit Delete
19486 $\text{If the Earth has no rotational motion, the weight of a person on the equator is } W. \text{ Determine the speed with which the Earth would have to rotate about its axis so that the person at the equator will weigh } \frac{3}{4} W.$ $\text{(The radius of the Earth is } 6400 \text{ km and } g = 10 \text{ m/s}^2)$ 1 107 JEE MCQ NEW $0.28 \times 10^{-3} \text{ rad/s}$, $1.1 \times 10^{-3} \text{ rad/s}$... 4 Edit Delete
19485 $\text{Which of the following most closely depicts the correct variation of the gravitation potential } V(r) \text{ due to a large planet of radius } R \text{ and uniform mass density? (figures are not drawn to scale)}$ 1 107 JEE MCQ NEW $\text{Option 1: Graph with initial increase and then constant}$, $\text{Option 2: Graph with initial decrease}$... 3 Edit Delete
19484 $\text{A very long (length } L) \text{ cylindrical galaxy is made of uniformly}$ $\text{distributed mass and has radius } R (R \gg L). \text{ A star outside the}$ $\text{galaxy is orbiting the galaxy in a plane perpendicular to the galaxy}$ $\text{and passing through its centre. If the time period of the star is } T \text{ and}$ $\text{its distance from the galaxy's axis is } r, \text{ then:}$ 1 107 JEE MCQ NEW $T \propto r$, $T \propto \sqrt{r}$... 4 Edit Delete
19483 $\text{A planet at a distance } r \text{ from the sun takes 200 days to complete one revolution around the sun.}$ $\text{What will be time period for a planet at distance } \frac{r}{4} \text{ from the sun?}$ 1 107 JEE MCQ NEW $50 \text{ days}$, $25 \text{ days}$... 2 Edit Delete
19482 $\text{If an object has the same weight at the same distance above and below the surface of the earth, then its distance from the surface of the earth is:}$ 1 107 JEE MCQ NEW $\frac{R}{2}$, $(\sqrt{5} - 1) \frac{R}{2}$... 2 Edit Delete
19481 $\text{If the diameter of the earth becomes half keeping mass constant,}$ $\text{then the acceleration due to gravity at the surface of the earth}$ $\text{becomes:}$ 1 107 JEE MCQ NEW $\text{half}$, $\text{four times}$... 2 Edit Delete
19480 $\text{Two identical particles each of mass } m, \text{ move in circular path due to their own mutual gravitational force.}$ $\text{Find the velocity of the particle if the radius of circular path is } a$ 1 107 JEE MCQ NEW $\sqrt{\frac{4Gm}{a}}$, $\sqrt{\frac{Gm}{2a}}$... 4 Edit Delete
19479 $\text{A particle is released from a height equal to radius of earth, } R. \text{ Its velocity when it strikes the ground is:}$ 1 107 JEE MCQ NEW $\sqrt{gR}$, $\sqrt{\frac{gR}{2}}$... 1 Edit Delete
19478 $\text{Planet } A \text{ has a density and radius represented by } \rho \text{ and } R \text{ respectively, while planet } B \text{ has a density of } \frac{\rho}{2} \text{ and a radius of } 1.5R. \text{ If } g_{AS} \text{ and } g_{BS} \text{ denote the acceleration at the surface of planets } A \text{ and } B \text{ respectively, then the ratio } \frac{g_{BS}}{g_{AS}} =$ 1 107 JEE MCQ NEW $\frac{3}{2}$, $\frac{3}{4}$... 2 Edit Delete
19477 $\text{A planet has a mass equal to 16 times the mass of Earth, and a radius equal to 4 times that of Earth. The ratio of the escape speed of the planet to that of Earth will be:}$ 1 107 JEE MCQ NEW $2 : 1$, $1 : 2$... 1 Edit Delete
19476 $\text{Given below are two statements:}$ $\text{Statement I: If total energy of a satellite revolving around earth in circular path is } E, \text{ then potential energy of satellite is } 2E.$ $\text{Statement II: Kinetic energy is also twice of total energy.}$ 1 107 JEE MCQ NEW $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 4 Edit Delete
19475 $\text{The weight of an object on the earth's surface is } 400 \text{ N. What would be the weight of the same object at a depth } \frac{R}{2} \text{ from the surface?}$ $\text{(where } R \text{ is the radius of the earth)}$ 1 107 JEE MCQ NEW $100 \text{ N}$, $300 \text{ N}$... 3 Edit Delete
19474 $\text{Consider the following statements:}$ $\text{(A) Planets revolve around the Sun with constant linear speed.}$ $\text{(B) The energy of a planet in an elliptical orbit is constant.}$ $\text{(C) A satellite in circular motion has constant energy.}$ $\text{(D) A body falling towards the Earth results in negligible displacement of the Earth.}$ $\text{Choose the incorrect statement from the given ones:}$ 1 107 JEE MCQ NEW $(\text{A}) \text{ only}$, $(\text{B}) \text{ only}$... 1 Edit Delete
19473 $\text{If mass of a planet is 9 times that of the earth and radius is 2 times that of the earth, then the escape speed from this planet is:}$ $\left(v_e \text{ is escape speed from the Earth.}\right)$ 1 107 JEE MCQ NEW $\frac{v_e}{\sqrt{2}}$, $\frac{v_e}{2\sqrt{2}}$... 3 Edit Delete
19472 $\text{At depth } d \text{ from the surface of the earth acceleration due to gravity is}$ $\text{same as its value at height } d \text{ above the surface of the earth. If the}$ $\text{earth is a sphere of radius } 6400 \text{ km, then the value of } d \text{ is equal to:}$ 1 107 JEE MCQ NEW $2975 \text{ km}$, $3955 \text{ km}$... 2 Edit Delete
19471 $\text{A particle is released at a height equal to the radius of the earth above the surface of the earth. Its velocity when it hits the surface of the earth is equal to:}$ $\text{(Where, } M_e = \text{mass of earth, } R_e = \text{radius of the earth.)}$ 1 107 JEE MCQ NEW $\sqrt{\frac{2GM_e}{R_e}}$, $\sqrt{\frac{GM_e}{2R_e}}$... 3 Edit Delete
19470 $\text{Two point masses (mass } m \text{ each) are moving in a circle of radius } R \text{ under mutual gravitational attraction. What is the speed of each mass?}$ 1 107 JEE MCQ NEW $\sqrt{\frac{GM}{4R}}$, $\sqrt{\frac{GM}{2R}}$... 1 Edit Delete
19469 $\text{An object of mass } m \text{ is placed at a height } R_e \text{ from the surface of the earth.}$ $\text{What is the increase in potential energy of the object if the height of the object is increased to } 2R_e \text{ from the surface?}$ $(R_e : \text{ Radius of the earth})$ 1 107 JEE MCQ NEW $\frac{1}{3}mgR_e$, $\frac{1}{6}mgR_e$... 2 Edit Delete
19468 $\text{The period of a pendulum at the earth's surface is } T. \text{ The time period of the pendulum at distance (from centre) which is twice the radius of the earth is:}$ 1 107 JEE MCQ NEW $\frac{T}{4}$, $4T$... 4 Edit Delete
19467 $\text{If the weight of an object at the Earth's surface is } 18 \text{ N, what will be its weight when taken to a height of } 3200 \text{ km above the surface?}$ $\text{(Given: radius of Earth } = 6400 \text{ km)}$ 1 107 JEE MCQ NEW $9 \text{ N}$, $8 \text{ N}$... 2 Edit Delete
19466 $\text{A body is projected vertically upwards from the surface of the earth with a velocity equal to one-third of escape velocity. The maximum height attained by the body will be:}$ $\text{(take the radius of the Earth } R = 6400 \text{ km and } g = 10 \text{ m/s}^2 )$ 1 107 JEE MCQ NEW $800 \text{ km}$, $1600 \text{ km}$... 1 Edit Delete
19465 $\text{The percentage decrease in the weight of a rocket, when it is taken to a height of } 32 \text{ km above the surface of the Earth will be:}$ $\text{(radius of the Earth } R = 6400 \text{ km)}$ 1 107 JEE MCQ NEW $1\%$, $3\%$... 1 Edit Delete
19464 $\text{Three identical particles } A, B, \text{ and } C \text{ of mass } 100 \text{ kg each are placed in a straight line with } AB = BC = 13 \text{ m.}$ $\text{The gravitational force on a fourth particle } P \text{ of the same mass is } F, \text{ when placed at a distance of } 13 \text{ m from particle } B \text{ on the perpendicular bisector of the line } AC. \text{ The value of } F \text{ will be approximately:}$ 1 107 JEE MCQ NEW $21G$, $100G$... 2 Edit Delete
19463 $\text{Two planets } A \text{ and } B \text{ of equal masses are having their periods of revolution } T_A \text{ and } T_B \text{ such that } T_A = 2T_B. \text{ These planets are revolving in the circular orbits of radii } r_A \text{ and } r_B \text{ respectively. Which of the following would be the correct relationship of their orbits?}$ 1 107 JEE MCQ NEW $2r_A^2 = r_B^2$, $r_A^3 = 2r_B^3$... 3 Edit Delete
19462 $\text{Four spheres each of mass } m \text{ form a square of side } d \text{ (as shown in the figure).}$ $\text{A fifth sphere of mass } M \text{ is situated at the centre of the square.}$ $\text{The total gravitational potential energy of the system is:}$ 1 107 JEE MCQ NEW $-\frac{Gm}{d} \left[(4 + \sqrt{2})m + 4\sqrt{2}M\right]$, $-\frac{GM}{d} \left[(4 + \sqrt{2})M + 4\sqrt{2}m\right]$... 1 Edit Delete
19461 $\text{Which of the following graphs correctly represents the variation of}$ $\text{acceleration due to gravity } g \text{ with distance } r \text{ from the centre of the}$ $\text{Earth? Assume } R \text{ is the radius of the Earth.}$ 1 107 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
19460 $\text{Two satellites } S_1 \text{ and } S_2 \text{ are revolving in circular orbits around a planet with radius } R_1 = 3200 \text{ km and } R_2 = 800 \text{ km respectively.}$ $\text{The ratio of the speed of the satellite } S_1 \text{ to the speed of the satellite } S_2 \text{ in their respective orbits would be:}$ 1 107 JEE MCQ NEW $\frac{1}{2}$, $\frac{1}{3}$... 1 Edit Delete
19459 $\text{In the reported figure of earth, the value of acceleration due to gravity is same at point } A \text{ and } C \text{ but it is smaller than that of its value at point } B \text{ (surface of the earth). The value of } OA : OB \text{ will be:}$ 1 107 JEE MCQ NEW $4 : 5$, $5 : 4$... 1 Edit Delete
19458 $\text{A planet revolving in an elliptical orbit has:}$ $\text{(A) A constant velocity of revolution.}$ $\text{(B) Has the least velocity when it is nearest to the Sun.}$ $\text{(C) Its areal velocity is directly proportional to its velocity.}$ $\text{(D) Areal velocity is inversely proportional to its velocity.}$ $\text{(E) To follow a trajectory such that the areal velocity is constant.}$ 1 107 JEE MCQ NEW $\text{(A) only}$, $\text{(D) only}$... 4 Edit Delete
19457 $\text{Determine the gravitational force of attraction between a ring and a sphere as shown in the figure, where the plane of the ring is perpendicular to the line joining their centres.}$ $\text{Given that the distance between the centres of the ring (of mass } m \text{) and the sphere (of mass } M \text{) is } \sqrt{8}R, \text{ and both have the same radius } R.$ 1 107 JEE MCQ NEW $\frac{\sqrt{8}}{9} \cdot \frac{GmM}{R}$, $\frac{2\sqrt{2}}{3} \cdot \frac{GMm}{R^2}$... 4 Edit Delete
19456 $\text{The initial velocity } v_i \text{ required to project a body vertically upward from the surface of the earth to reach a height of } 10R, \text{ where } R \text{ is the radius of the earth, may be described in terms of escape velocity } v_e \text{ such that } v_i = \sqrt{\frac{x}{y}} \times v_e. \text{ The value of } x \text{ will be:}$ $1. \ 10$ $2. \ 20$ $3. \ 30$ $4. \ 40$ 1 107 JEE MCQ NEW $10$, $20$... 1 Edit Delete
19455 $\text{Select the correct option based on the statements below:}$ $\text{Assertion (A): The escape velocities of planets } A \text{ and } B \text{ are the same. But } A \text{ and } B \text{ are of unequal mass.}$ $\text{Reason (R): The product of their mass and radius must be the same, } M_1R_1 = M_2R_2.$ 1 107 JEE MCQ NEW $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$, $\text{(A) is True but (R) is False.}$... 2 Edit Delete
19454 $\text{A solid sphere of radius } R \text{ gravitationally attracts a particle placed at } 3R \text{ form its centre with a force } F_1. \text{ Now a spherical cavity of radius } \frac{R}{2} \text{ is made in the sphere (as shown in figure) and the force becomes } F_2. \text{ The value of } F_1 : F_2 \text{ is:}$ 1 107 JEE MCQ NEW $25 : 36$, $36 : 25$... 3 Edit Delete
19453 $\text{Two satellites A and B of masses 200 kg and 400 kg are revolving round the earth at height of 600 km and 1600 km respectively.}$ $\text{If } T_A \text{ and } T_B \text{ are the time periods of } A \text{ and } B \text{ respectively then the value of } T_B - T_A \text{ is:}$ $\text{[Given : radius of earth = 6400 km, mass of earth = } 6 \times 10^{24} \text{]}$ 1 107 JEE MCQ NEW $1.33 \times 10^3 \text{ s}$, $3.33 \times 10^2 \text{ s}$... 1 Edit Delete
19452 $\text{A body weighs } 49 \text{ N on a spring balance at the north pole. What will be its weight recorded on the same weighing machine, if it is shifted to the equator? (use } g = \frac{GM}{R^2} = 9.8 \text{ ms}^{-2} \text{ radius of earth, } R = 6400 \text{ km.})$ 1 107 JEE MCQ NEW $49 \text{ N}$, $48.83 \text{ N}$... 2 Edit Delete
19451 $\text{Consider two satellites, } S_1 \text{ and } S_2, \text{ with periods of revolution } 1 \text{ hr and } 8 \text{ hr, respectively revolving around a planet in circular orbits.}$ $\text{The ratio of the angular velocity of the satellite } S_1 \text{ to the angular velocity of the satellite } S_2 \text{ is:}$ 1 107 JEE MCQ NEW $8 : 1$, $1 : 4$... 1 Edit Delete
19450 $\text{Four identical particles of equal masses } 1 \text{ kg made to move along the circumference of a circle of radius } 1 \text{ m under the action of their own mutual gravitational attraction. The speed of each particle will be:}$ 1 107 JEE MCQ NEW $\sqrt{\frac{G}{2} \left(1 + 2\sqrt{2}\right)}$, $\sqrt{G \left(1 + 2\sqrt{2}\right)}$... 4 Edit Delete
19449 $\text{Two stars of masses } m \text{ and } 2m \text{ at a distance } d \text{ rotate about their common centre of mass in free space. The period of revolution is:}$ 1 107 JEE MCQ NEW $\frac{1}{2\pi} \sqrt{\frac{d^3}{3Gm}}$, $2\pi \sqrt{\frac{d^3}{3Gm}}$... 2 Edit Delete
19448 $\text{Two planets have masses } M \text{ and } 16M \text{ and their radii are } a \text{ and } 2a, \text{ respectively.}$ $\text{The separation between the centres of the planets is } 10a. \text{ A body of mass } m \text{ is fired from the surface of the larger planet}$ $\text{towards the smaller planet along the line joining their centres.}$ $\text{For the body to be able to reach at the surface of smaller planet, the}$ $\text{minimum firing speed needed is:}$ 1 107 JEE MCQ NEW $\sqrt{\frac{GM^2}{ma}}$, $\frac{3}{2} \sqrt{\frac{5GM}{a}}$... 2 Edit Delete
19447 $\text{A satellite is in an elliptical orbit around a planet } P. \text{ It is observed that the velocity of the satellite when it is farthest from the planet is } 6 \text{ times less than that when it is closest to the planet. The ratio of distances between the satellite and the planet at closest and farthest points is:}$ 1 107 JEE MCQ NEW $1 : 3$, $1 : 2$... 4 Edit Delete
19446 $\text{The acceleration due to gravity on the earth's surface at the poles is } g$ $\text{and the angular velocity of the earth about the axis passing through the pole is } \omega.$ $\text{An object is weighed at the equator and at a height } h$ $\text{above the poles by using a spring balance. If the weights are found to be same, then } h \text{ is: } (h \ll R, \text{ where } R \text{ is the radius of the earth})$ 1 107 JEE MCQ NEW $\frac{R^2 \omega^2}{8g}$, $\frac{R^2 \omega^2}{4g}$... 4 Edit Delete
19445 $\text{The value of the acceleration due to gravity is } g_1 \text{ at a height } h = \frac{R}{2} \ (R = \text{radius of the earth}) \text{ from the surface of the earth. It is again equal to } g_1 \text{ at a depth } d \text{ below the surface of the earth. The ratio } \frac{d}{R} \text{ equals:}$ 1 107 JEE MCQ NEW $\frac{7}{9}$, $\frac{4}{9}$... 4 Edit Delete
19444 $\text{A body is moving in a low circular orbit about a planet of mass } M \text{ and radius } R. \text{ The radius of the orbit can be taken to be } R \text{ itself.}$ $\text{Then the ratio of the speed of this body in the orbit to the escape velocity from the planet is:}$ 1 107 JEE MCQ NEW $\sqrt{2}$, $\frac{1}{\sqrt{2}}$... 2 Edit Delete
19443 $\text{On the } x\text{-axis at a distance } x \text{ from the origin, the gravitational field}$ $\text{due to a mass distribution is given by } \frac{Ax}{(x^2+a^2)^{3/2}} \text{ in the } x\text{-direction.}$ $\text{The magnitude of gravitational potential on the } x\text{-axis at a distance } x,$ $\text{taking its value to be zero at infinity, is:}$ 1 107 JEE MCQ NEW $\frac{1}{(x^2+a^2)^{3/2}}$, $A(x^2+a^2)^{1/2}$... 4 Edit Delete
19442 $\text{A satellite is moving in a low nearly circular orbit around the earth. Its radius is roughly equal to that of the earth's radius } R_e. \text{ By firing rockets attached to it, its speed is instantaneously increased in the direction of its motion so that is become } \sqrt{\frac{3}{2}} \text{ times larger. Due to this the farthest distance from the centre of the earth that the satellite reaches is } R. \text{ Value of } R \text{ is ?}$ 1 107 JEE MCQ NEW $2R_e$, $2.5R_e$... 3 Edit Delete
19441 $\text{The height } 'h' \text{ at which the weight of a body will be the same as that at the same depth } 'h' \text{ from the surface of the earth is (Radius of the earth is } R \text{ and effect of the rotation of the earth is neglected):}$ 1 107 JEE MCQ NEW $\frac{\sqrt{5}R - R}{2}$, $\frac{\sqrt{5}}{2} R - R$... 1 Edit Delete
19440 $\text{The mass density of a spherical galaxy varies as } \frac{K}{r} \text{ over a large distance } r \text{ from its centre.}$ $\text{In that region, a small star is in a circular orbit of radius } R. \text{ Then the period of revolution, } T \text{ depends on } R \text{ as:}$ 1 107 JEE MCQ NEW $T \propto R$, $T^2 \propto \frac{1}{R^3}$... 3 Edit Delete
19439 $\text{The energy required to take a satellite to a height } h \text{ above the Earth's surface (radius of Earth } R = 6.4 \times 10^3 \text{ km) is } E_1 \text{ and kinetic energy required for the satellite to be in a circular orbit at this height is } E_2. \text{ The value of } h \text{ for which } E_1 \text{ and } E_2 \text{ are equal is:}$ 1 107 JEE MCQ NEW $1.6 \times 10^3 \text{ km}$, $3.2 \times 10^3 \text{ km}$... 2 Edit Delete
19438 $\text{The ratio of the weights of a body on the Earth's surface to that on}$ $\text{the surface of a planet is } 9 : 4. \text{ The mass of the planet is } \left( \frac{1}{9} \right)^{\text{th}}$ $\text{that of the Earth. If } R \text{ is the radius of the Earth, what is the radius of}$ $\text{the planet? (Take the planets to have the same mass density)}$ 1 107 JEE MCQ NEW $\frac{R}{9}$, $\frac{R}{2}$... 2 Edit Delete
19437 $\text{The value of acceleration due to gravity at Earth's surface is } 9.8 \text{ ms}^{-2}. $ $\text{The altitude above its surface at which the acceleration due to gravity decreases to } 4.9 \text{ ms}^{-2}, \text{ is close to:}$ $\text{(Radius of earth = } 6.4 \times 10^6 \text{ m)}$ 1 107 JEE MCQ NEW $6.4 \times 10^6 \text{ m}$, $9.0 \times 10^6 \text{ m}$... 3 Edit Delete
19436 $\text{A test particle is moving in a circular orbit in the gravitational field produced by a mass density } \rho(r) = \frac{K}{r^2}. \text{ Identify the correct relation between the radius } R \text{ of the particle's orbit and its period } T:$ 1 107 JEE MCQ NEW $\frac{T}{R^2} \text{ is a constant}$, $\frac{T}{R} \text{ is a constant}$... 2 Edit Delete
19435 $\text{Four identical particles of mass } M \text{ are located at the corners of a square of side } 'a'. \text{ What should be their speed if each of them revolves under the influence of another gravitational field in a circular orbit circumscribing the square?}$ 1 107 JEE MCQ NEW $1.16 \sqrt{\frac{GM}{a}}$, $1.21 \sqrt{\frac{GM}{a}}$... 1 Edit Delete
19434 $\text{A satellite is revolving in a circular orbit at a height } h \text{ from the earth's surface (radius of earth } R; h \ll R).$ $\text{The minimum increase in its orbital velocity required, so that the satellite could escape from the earth's gravitational field is close to: (Neglect the effect of the atmosphere.)}$ 1 107 JEE MCQ NEW $\sqrt{2gR}$, $\sqrt{gR}$... 4 Edit Delete
19433 $\text{Four particles, each of mass } M \text{ and equidistant from each other, move along a circle of radius } R \text{ under the action of their mutual gravitational attraction. The speed of each particle is:}$ 1 107 JEE MCQ NEW $\sqrt{2\sqrt{2} \frac{GM}{R}}$, $\sqrt{\frac{GM}{R} \left(1 + 2\sqrt{2}\right)}$... 3 Edit Delete
19432 $\text{A heavy iron bar, of weight } W \text{ is having its one end on the ground and the other on the shoulder of a person. The bar makes an angle } \theta \text{ with the horizontal. The weight experienced by the person is:}$ 1 106 JEE MCQ NEW $\frac{W}{2}$, $W \sin \theta$... 1 Edit Delete
19431 $\text{Three bodies } A, B \text{ and } C \text{ have equal kinetic energies and their masses are } 400 \text{ g, } 1.2 \text{ kg and } 1.6 \text{ kg respectively. The ratio of their linear momenta is:}$ 1 106 JEE MCQ NEW $1 : \sqrt{3} : 2$, $1 : \sqrt{3} : \sqrt{2}$... 1 Edit Delete
19430 $\text{When kinetic energy of a body becomes } 36 \text{ times of its original value, the percentage increase in the momentum of the body will be:}$ 1 106 JEE MCQ NEW $600\%$, $500\%$... 2 Edit Delete
19429 $\text{Four particles A, B, C, D of mass } \frac{m}{2}, \ m, \ 2m, \ 4m \text{ have the same momentum, respectively. The particle with maximum kinetic energy is:}$ 1 106 JEE MCQ NEW $\text{A}$, $\text{D}$... 1 Edit Delete
19428 $\text{What is the centre of gravity of semi-circular disc of radius } (R)?$ 1 106 JEE MCQ NEW $\frac{2R}{\pi}$, $\frac{4R}{3\pi}$... 2 Edit Delete
19427 $\text{A uniform solid sphere is rolling without slipping on a horizontal surface.}$ $\text{The ratio of translational kinetic energy to the total kinetic energy is } \frac{5}{x}. \text{ Find the value of } x.$ 1 106 JEE MCQ NEW $2$, $3$... 4 Edit Delete
19426 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):}$ $\text{Assertion (A): Fan spins even after switch is in OFF.}$ $\text{Reason (R): Fan in rotation has rotational inertia.}$ $\text{In the light of the above statements choose the correct answer from the options given below:}$ 1 106 JEE MCQ NEW $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19425 $\text{For a uniform disc, the moment of inertia about diameter is } \frac{MR^2}{4},$ $\text{where } M \text{ is mass and } R \text{ is radius of the disc.}$ $\text{The moment of inertia about tangent parallel to diameter is:}$ 1 106 JEE MCQ NEW $\frac{3}{4}MR^2$, $\frac{5}{4}MR^2$... 2 Edit Delete
19424 $\text{A massless rod is arranged as shown in the figure. The tension in the string is:}$ $\text{(Take } g = 10 \text{ m/s}^2\text{)}$ 1 106 JEE MCQ NEW $320 \text{ N}$, $640 \text{ N}$... 1 Edit Delete
19423 $\text{The torque of a force } 5\hat{i} + 3\hat{j} - 7\hat{k} \text{ about the origin is } \tau. \text{ If the force acts on a particle whose position vector is } 2\hat{i} + 2\hat{j} + \hat{k}, \text{ then the value of } \tau \text{ will be:}$ 1 106 JEE MCQ NEW $11\hat{i} + 19\hat{j} - 4\hat{k}$, $-11\hat{i} + 9\hat{j} - 16\hat{k}$... 3 Edit Delete
19422 $\text{The radius of gyration of a cylindrical rod of length } 10\sqrt{3} \text{ m about an axis of rotation perpendicular to its length and passing through the center will be:}$ 1 106 JEE MCQ NEW $5 \text{ m}$, $3 \text{ m}$... 1 Edit Delete
19421 $\text{A disc of mass } 1 \text{ kg and radius } R \text{ is free to rotate about a horizontal axis passing through its centre and perpendicular to the plane of the disc. A body of the same mass as that of the disc is fixed at the highest point of the disc. Now the system is released. When the body comes to the lowest position, its angular speed will be: (take } g = 10 \text{ ms}^{-2})$ 1 106 JEE MCQ NEW $4 \sqrt{\frac{5}{3R}} \text{ rad/s}$, $4 \sqrt{\frac{4}{3R}} \text{ rad/s}$... 1 Edit Delete
19420 $\text{Three identical spheres, each of mass } M, \text{ are placed at the corners of a right-angled triangle with mutually perpendicular sides equal to } 3 \text{ m each.}$ $\text{Taking the point of intersection of mutually perpendicular sides as the origin, the magnitude of the position vector of the centre of mass of the system will be } \sqrt{x} \text{ m.}$ $\text{The value of } x \text{ is:}$ 1 106 JEE MCQ NEW 4, 5... 3 Edit Delete
19419 $\text{The moment of Inertia (M.I.) of four bodies having the same mass } M \text{ and radius } 2R \text{ are as follows:}$ $1.\ I_1 = \text{M.I. of a solid sphere about its diameter}$ $2.\ I_2 = \text{M.I. of solid cylinder about its axis}$ $3.\ I_3 = \text{M.I. of a solid circular disc about its diameter}$ $4.\ I_4 = \text{M.I. of a thin circular ring about its diameter}$ $\text{If } 2(I_2 + I_3) + I_4 = xI_1, \text{ then the value of } x \text{ will be:}$ 1 106 JEE MCQ NEW $3$, $5$... 2 Edit Delete
19418 $\text{If a force } \vec{F} = 3\hat{i} + 4\hat{j} - 2\hat{k} \text{ acts on a particle having a position vector } 2\hat{i} + \hat{j} + 2\hat{k}, \text{ then the torque about the origin will be:}$ 1 106 JEE MCQ NEW $3\hat{i} + 4\hat{j} - 2\hat{k}$, $-10\hat{i} + 10\hat{j} + 5\hat{k}$... 2 Edit Delete
19417 $\text{A person with a mass of } 80 \text{ kg is standing on the rim of a circular platform with a mass of } 200 \text{ kg and rotating about its axis at a speed of } 5 \text{ revolutions per minute (rpm). As the person moves toward the centre of the platform, what will be the platform's new rotational speed (in rpm) once the person reaches its centre?}$ $1.\ 3$ $2.\ 6$ $3.\ 9$ $4.\ 12$ 1 106 JEE MCQ NEW $3$, $6$... 3 Edit Delete
19416 $\text{Two uniform circular discs are rotating independently in the same direction around their common axis passing through their centres.}$ $\text{The moment of inertia and angular velocity of the first disc are } 0.1 \text{ kg-m}^2 \text{ and } 10 \text{ rad s}^{-1} \text{ respectively}$ $\text{while those for the second one are } 0.2 \text{ kg-m}^2 \text{ and } 5 \text{ rad s}^{-1} \text{ respectively.}$ $\text{At some instant, they get stuck together and start rotating as a single system about their common axis with some angular speed.}$ $\text{The Kinetic energy of the combined system is:}$ 1 106 JEE MCQ NEW $\frac{10}{3} \text{ J}$, $\frac{2}{3} \text{ J}$... 4 Edit Delete
19415 $\text{A solid sphere of mass } M \text{ and radius } R \text{ is divided into two unequal parts.}$ $\text{The first part has a mass of } \frac{7M}{8} \text{ and is converted into a uniform disc of radius } 2R.$ $\text{The second part is converted into a uniform solid sphere.}$ $\text{Let } I_1 \text{ be the moment of inertia of the disc about its axis and } I_2 \text{ be the moment of inertia of the new sphere about its axis.}$ $\text{The ratio } \frac{I_1}{I_2} \text{ is given by:}$ 1 106 JEE MCQ NEW 65, 140... 2 Edit Delete
19414 $\text{Two coaxial discs, having moments of inertia } I_1 \text{ and } \frac{I_1}{2} \text{ are rotating}$ $\text{with respective angular velocities } \omega_1 \text{ and } \frac{\omega_1}{2}, \text{ about their common}$ $\text{axis. They are brought in contact with each other and thereafter they}$ $\text{rotate with a common angular velocity. If } E_f \text{ and } E_i \text{ are the final and}$ $\text{initial total energies, then } (E_f - E_i) \text{ is:}$ 1 106 JEE MCQ NEW $\frac{I_1 \omega_1^2}{6}$, $\frac{3}{8} I_1 \omega_1^2$... 4 Edit Delete
19413 $\text{A thin circular plate of mass } M \text{ and radius } R \text{ has its density varying as } \rho(r) = \rho_0 r \text{ with } \rho_0 \text{ as constant and } r \text{ is the distance from its center.}$ $\text{The moment of inertia of the circular plate about an axis perpendicular to the plate and passing through its edge is } I = \alpha MR^2. \text{ The value of the coefficient } \alpha \text{ is:}$ 1 106 JEE MCQ NEW $\frac{3}{2}$, $\frac{1}{2}$... 3 Edit Delete
19412 $\text{A thin circular disk is in the } xy \text{ plane as shown in the figure. The ratio of its moment of inertia about } z \text{ and } z' \text{ axes will be:}$ 1 106 JEE MCQ NEW $1 : 4$, $1 : 5$... 3 Edit Delete
19411 $\text{Suppose that the angular velocity of the rotation of the earth is increased. Then as a consequence:}$ 1 106 JEE MCQ NEW $\text{Weight of the objects everywhere on the earth will decrease}$, $\text{Weight of the objects everywhere on the earth will increase}$... 3 Edit Delete
19410 $\text{A force of } 40 \text{ N acts on a point } B \text{ at the end of an } L\text{-shaped object}$ $\text{as shown in the figure. The angle } \theta \text{ that will produce the maximum}$ $\text{moment of the force about the point } A \text{ is given by:}$ 1 106 JEE MCQ NEW $\tan \theta = 4$, $\tan \theta = \frac{1}{4}$... 3 Edit Delete
19409 $\text{The moment of inertia of an equilateral triangular lamina } ABC, \text{ about the axis passing through its centre } O \text{ and perpendicular to its plane is } I_0 \text{ as shown in the figure.}$ $\text{A cavity } DEF \text{ is cut out from the lamina, where } D, E, F \text{ are the midpoints of the sides.}$ $\text{The moment of inertia of the remaining part of the lamina about the same axis is:}$ 1 106 JEE MCQ NEW $\frac{31}{32} I_0$, $\frac{3}{4} I_0$... 4 Edit Delete
19408 $\text{A uniform disc of radius } R \text{ and mass } M \text{ is free to rotate only about its axis.}$ $\text{A string is wrapped over its rim and a body of mass } m \text{ is tied to the free end of the string as shown in the figure.}$ $\text{The body is released from rest. Then the acceleration of the body is:}$ 1 106 JEE MCQ NEW $\frac{2Mg}{2m+M}$, $\frac{2m+M}{2Mg}$... 2 Edit Delete
19407 $\text{A physical balance operates on the principle of moments. When a weight of } 5 \text{ mg is placed on the left pan, the beam becomes horizontal. The two empty pans are of equal mass. Which of the following statements is correct?}$ 1 106 JEE MCQ NEW $\text{The left arm is shorter than the right arm.}$, $\text{Both arms are of equal length.}$... 1 Edit Delete
19406 $\text{A uniform thin rod } AB \text{ of length } L \text{ has linear mass density } \mu(x) = a + \frac{bx}{L}, \text{ where } x \text{ is measured from } A.$ $\text{If the centre of mass of the rod lies at a distance of } \left(\frac{7}{12}\right)L \text{ from } A, \text{ then } a \text{ and } b \text{ are related as:}$ 1 106 JEE MCQ NEW $a = 2b$, $2a = b$... 2 Edit Delete
19405 $\text{A particle of mass } 2 \text{ kg is on a smooth horizontal table and moves in a circular path of radius } 0.6 \text{ m.}$ $\text{The height of the table from the ground is } 0.8 \text{ m.}$ $\text{If the angular speed of the particle is } 12 \text{ rad s}^{-1},$ $\text{the magnitude of its angular momentum about a point on the ground right under the centre of the circle is:}$ 1 106 JEE MCQ NEW $14.4 \text{ kg m}^2\text{s}^{-1}$, $8.64 \text{ kg m}^2\text{s}^{-1}$... 1 Edit Delete
19404 $\text{A uniform solid cylindrical roller of mass } 'm' \text{ is being pulled on a horizontal surface with force } F \text{ parallel to the surface and applied at its centre.}$ $\text{If the acceleration of the cylinder is } 'a' \text{ and it is rolling without slipping then the value of } 'F' \text{ is:}$ 1 106 JEE MCQ NEW $ma$, $2ma$... 4 Edit Delete
19403 $\text{A particle of mass } m \text{ is projected with speed } v \text{ at an angle of } 30^\circ \text{ with the horizontal.}$ $\text{When the particle is at the maximum height, its angular momentum about the point of projection is:}$ 1 106 JEE MCQ NEW $\frac{mv^3}{16g}$, $\frac{\sqrt{3}mv^3}{16g}$... 2 Edit Delete
19402 $\text{A solid cylinder is placed gently over an inclined plane of inclination } 60^\circ. \text{ The acceleration of the cylinder, when it starts rolling without slipping, is } \frac{g}{\sqrt{x}}, \text{ where } \mu \text{ is coefficient of friction.}$ $\left( \text{Take } g = 10 \text{ m/s}^2 \right)$ 1 106 JEE MCQ NEW 3, 2... 1 Edit Delete
19401 $\text{A uniform ring and uniform solid sphere roll down the same inclined plane at the same distance. If the ratio of their translational kinetic energies is } \frac{7}{x} \text{ then } x \text{ is: (Given mass and radius of the ring and sphere are equal)}$ $1. \ 10$ $2. \ 15$ $3. \ 20$ $4. \ 35$ 1 106 JEE MCQ NEW $10$, $15$... 1 Edit Delete
19400 $\text{A man holding a rod of mass } m \text{ as shown in the figure. Find the weight of the rod experienced by him.}$ 1 106 JEE MCQ NEW $\frac{mg}{2}$, $\frac{mg}{4}$... 2 Edit Delete
19399 $\text{For the given system (see figure), the moment of inertia about the diagonal is:}$ 1 106 JEE MCQ NEW $1 \text{ kg-m}^2$, $2 \text{ kg-m}^2$... 3 Edit Delete
19398 $\text{A body of mass } 1000 \text{ kg is moving horizontally with a velocity } 6 \text{ m/s.}$ $\text{Another body of mass } 200 \text{ kg is added gently.}$ $\text{Then what will be its new velocity?}$ 1 106 JEE MCQ NEW $5 \text{ m/s}$, $4 \text{ m/s}$... 1 Edit Delete
19397 $\text{What is the ratio of the radius of gyration of a solid sphere to that of a solid cylinder, given that both objects have the same mass and radius?}$ 1 106 JEE MCQ NEW $\frac{2}{\sqrt{5}}$, $\frac{\sqrt{5}}{2}$... 1 Edit Delete
19396 $\text{A force of } 54.4 \text{ N is applied on the free end of a string wrapped around a solid cylinder of mass } 15 \text{ kg and radius } 10 \text{ cm.}$ $\text{What is the angular acceleration of the cylinder?}$ 1 106 JEE MCQ NEW $94.10 \text{ rad/s}^2$, $72.5 \text{ rad/s}^2$... 2 Edit Delete
19395 $\text{Solid sphere rolls on horizontal plane. Ratio of angular momentum about COM to total energy is } \frac{\pi}{22}. \text{ The angular velocity of the solid sphere in (rad/s) is:}$ $1.\ 4$ $2.\ 3$ $3.\ 2$ $4.\ 1$ 1 106 JEE MCQ NEW $4$, $3$... 1 Edit Delete
19394 $\text{What is the displacement of point } A \text{ on the top of the disc rolling without slipping on horizontal surface with angular speed } \omega, \text{ in half rotation?}$ 1 106 JEE MCQ NEW $R \sqrt{\pi^2 + \frac{2}{4}}$, $R \sqrt{\pi^2 + \frac{1}{4}}$... 3 Edit Delete
19393 $\text{Two bodies with equal linear momentum have a kinetic energy ratio of } 16 : 9. \text{ What is the ratio of their masses?}$ 1 106 JEE MCQ NEW $\frac{9}{16}$, $\frac{4}{3}$... 1 Edit Delete
19392 $\text{A body is rotating with kinetic energy, } E. \text{ If the angular velocity of the body is increased to three times of the initial angular velocity then kinetic energy becomes } nE. \text{ What would be the value of } n?$ 1 106 JEE MCQ NEW $3$, $7$... 3 Edit Delete
19391 $\text{A force } \vec{F} = -c\hat{k} \text{ is acting on a particle at the origin. The torque of this force about the point } (-2, 3, 0) \text{ is given by } -c(A\hat{i} + B\hat{j}).$ $\text{If } \frac{A}{B} = \frac{x}{2}, \text{ then the value of } x \text{ is:}$ 1 106 JEE MCQ NEW $\frac{2}{3}$, $3$... 2 Edit Delete
19390 $\text{Earth shrinks to } \frac{1}{64} \text{ times of its initial volume. Time period of earth rotation is found to be } \frac{24}{x} \text{ hrs. The value of } x \text{ is:}$ 1 106 JEE MCQ NEW $16$, $20$... 1 Edit Delete
19389 $\text{A body of mass } 5 \text{ kg has the linear momentum of } 100 \text{ kg ms}^{-1} \text{ and acted upon by the force of } 2 \text{ N for } 2 \text{ seconds, then change in kinetic energy in Joule is:}$ $1. \ 100 \text{ J}$ $2. \ 90 \text{ J}$ $3. \ 204 \text{ J}$ $4. \ 81.6 \text{ J}$ 1 106 JEE MCQ NEW $100 \text{ J}$, $90 \text{ J}$... 4 Edit Delete
19388 $\text{Momentum of a particle is increased by } 50\% \text{ by keeping its mass constant. Percentage increase in kinetic energy of particle is:}$ 1 106 JEE MCQ NEW $50\%$, $125\%$... 2 Edit Delete
19387 $\text{The moment of inertia of a semi-circular ring of mass } M \text{ and radius } R \text{ about an axis passing through the centre and perpendicular to the plane of the ring is:}$ 1 106 JEE MCQ NEW $MR^2$, $\frac{1}{2}MR^2$... 1 Edit Delete
19386 $\text{A solid sphere and a ring have equal masses and equal radii of gyration. If the sphere is rotating about its diameter and the ring about an axis passing through and perpendicular to its plane, then the ratio of the radii is } \sqrt{\frac{x}{2}}. \text{ The value of } x \text{ is:}$ 1 106 JEE MCQ NEW $5$, $2$... 1 Edit Delete
19385 $\text{Two solid spheres of mass } m = \frac{1}{2} \text{ kg each are connected at the ends of a light rod as shown in the figure.}$ $\text{The assembly rotates about axis AA'. Then moment of inertia of the assembly is equal to } \frac{x}{5} \text{ kgm}^2 \text{ value of } x \text{ is equal to:}$ 1 106 JEE MCQ NEW 1.27, 3.14... 1 Edit Delete
19384 $\text{A uniform solid cylinder of radius } R, \text{ is released from a } 600 \text{ m long}$ $\text{ramp, inclined at } 30^\circ \text{ from the horizontal. The time taken to reach the}$ $\text{bottom of the ramp is:}$ $\text{(Consider sufficient friction for pure rolling.)}$ 1 106 JEE MCQ NEW $60 \text{ s}$, $6\sqrt{10} \text{ s}$... 2 Edit Delete
19383 $\text{Two discs of the same mass, radii } r_1, r_2, \text{ thickness 1 mm and 0.5 mm, have densities in the ratio } 3 : 1. \text{ The ratio of their moment of inertia about their diameter is:}$ 1 106 JEE MCQ NEW $6 : 1$, $1 : 6$... 2 Edit Delete
19382 $\text{Match the physical quantities given in Column-I with the physical dimensions in Column-II:}$ $\begin{array}{|c|c|} \hline \text{Column-I} & \text{Column-II} \\ \hline \text{(A) Torque} & \text{(P)} \ [ML^{-1}T^{-2}] \\ \text{(B) Stress} & \text{(Q)} \ [ML^2T^{-2}] \\ \text{(C) Pressure Gradient} & \text{(R)} \ [ML^{-2}T^{-2}] \\ \text{(D) Angular momentum} & \text{(S)} \ [ML^{-2}T^{-1}] \\ \hline \end{array}$ $\text{Choose the correct option from the given ones:}$ 1 106 JEE MCQ NEW $\text{A - S, B - P, C - R, D - Q}$, $\text{A - Q, B - P, C - R, D - S}$... 2 Edit Delete
19381 $\text{A solid sphere is rolling on a smooth surface with kinetic energy equal to } 7 \times 10^{-3} \text{ J. If the mass of the sphere is 1 kg, then the speed of the centre of mass is: (Consider pure rolling)}$ 1 106 JEE MCQ NEW $10 \text{ m/s}$, $10 \text{ cm/s}$... 2 Edit Delete
19380 $\text{A disc of radius } R \text{ is given by } \omega_0 \text{ angular speed and placed gently on a rough horizontal surface.}$ $\text{What is the velocity of center of the disc when pure rolling starts?}$ 1 106 JEE MCQ NEW $\frac{R\omega_0}{3}$, $R\omega_0$... 1 Edit Delete
19379 $\text{A solid sphere is released from point } O \text{ at the top of an incline as shown.}$ $\text{If the sphere rolls down the inclined plane without slipping,}$ $\text{the velocity of centre of mass of the sphere at the bottommost point}$ $\text{of the incline is: } (g = 10 \text{ m/s}^2)$ 1 106 JEE MCQ NEW $3 \text{ m/s}$, $7 \text{ m/s}$... 3 Edit Delete
19378 $\text{A disk and a solid sphere (dark boundary) of the same radius are rotated as shown in the figure.}$ $\text{If masses of disk and solid sphere are 4 kg and 5 kg respectively then,}$ \frac{I_{\text{disc}}}{I_{\text{solid sphere}}} = $ 1 106 JEE MCQ NEW \frac{7}{5}, \frac{25}{28}... 3 Edit Delete
19377 $\text{Let } I_{cm} \text{ be the moment of Inertia of the disc passing through centre}$ $\text{and perpendicular to its plane. } I_{AB} \text{ be the moment of inertia about}$ $\text{axis } AB \text{ that is in the plane of the disc and } \frac{2r}{3} \text{ distance from centre.}$ $\text{Then } \frac{I_{cm}}{I_{AB}} =$ 1 106 JEE MCQ NEW $\frac{1}{4}$, $\frac{18}{25}$... 2 Edit Delete
19376 $\text{A ring of uniform wire and radius } 5 \text{ cm is made to rotate about a coplanar axis, which is at a distance of } 10 \text{ cm from the centre of the ring as shown. The radius of gyration of the ring about the axis is:}$ 1 106 JEE MCQ NEW $\frac{15}{\sqrt{3}} \text{ cm}$, $15 \text{ cm}$... 4 Edit Delete
19375 $\text{The radius of gyration for the uniform solid sphere of radius } 5 \text{ cm}$ $\text{about the axis } PQ, \text{ as shown in the figure is:}$ 1 106 JEE MCQ NEW $5 \text{ cm}$, $10 \text{ cm}$... 3 Edit Delete
19374 $\text{Two bodies of masses } 1 \text{ kg and } 3 \text{ kg have position vectors } (\hat{i} + 2\hat{j} + \hat{k}) \text{ and } (-3\hat{i} - 2\hat{j} + \hat{k}) \text{ respectively. The magnitude of the position vector of the centre-of-mass of this system will be similar to the magnitude of the vector:}$ 1 106 JEE MCQ NEW $\hat{i} - 2\hat{j} + \hat{k}$, $-3\hat{i} - 2\hat{j} + \hat{k}$... 1 Edit Delete
19373 $\text{Four identical discs each of mass } M \text{ and diameter } a \text{ are arranged in}$ $\text{a small plane as shown in figure. If the moment of inertia of the}$ $\text{system about } OO' \text{ is } \frac{x}{4}Ma^2. \text{ Then, the value of } x \text{ will be:}$ 1 106 JEE MCQ NEW $1$, $3$... 2 Edit Delete
19372 $\text{A solid cylinder is suspended symmetrically through two massless strings, as shown in the figure. The distance from the initial rest position, the cylinder should be unbinding, for the strings to achieve a speed of } 4 \text{ ms}^{-1}, \text{ is:}$ $\text{(take } g = 10 \text{ ms}^{-2})$ 1 106 JEE MCQ NEW $100 \text{ cm}$, $110 \text{ cm}$... 3 Edit Delete
19371 $\text{A pulley of radius } 1.5 \text{ m is rotated about its axis by a force, } F = (12t - 3t^2) \text{ N applied tangentially (while } t \text{ is measured in seconds).}$ $\text{If the moment of inertia of the pulley about its axis of rotation is } 4.5 \text{ kg-m}^2, \text{ the number of rotations made by the pulley before its direction of motion is reversed, will be } \frac{K}{\pi}. \text{ The value of } K \text{ is:}$ 1 106 JEE MCQ NEW $12$, $14$... 4 Edit Delete
19370 $\text{A solid cylinder and a solid sphere, having same mass } M \text{ and radius } R, \text{ roll down the same inclined plane from top without slipping. They start from rest. The ratio of the velocity of the solid cylinder to that of the solid sphere, with which they reach the ground, will be:}$ 1 106 JEE MCQ NEW $\sqrt{\frac{5}{3}}$, $\sqrt{\frac{4}{5}}$... 4 Edit Delete
19369 $\text{A spherical shell of } 1 \text{ kg mass and radius } R \text{ is rolling with angular speed } \omega \text{ on a horizontal plane (as shown in the figure). The magnitude of angular momentum of the shell about the origin } O \text{ is } \frac{a}{3} R^2 \omega. \text{ The value of } a \text{ will be:}$ 1 106 JEE MCQ NEW $2$, $3$... 3 Edit Delete
19368 $\text{A uniform disc with mass } M = 4 \text{ kg and radius } R = 10 \text{ cm is mounted on a fixed horizontal axle as shown in the figure. A block with mass } m = 2 \text{ kg hangs from a massless cord that is wrapped around the rim of the disc. During the fall of the block, the cord does not slip and there is no friction at the axle. The tension in the cord is: (Take } g = 10 \text{ ms}^{-2})$ 1 106 JEE MCQ NEW $12 \text{ N}$, $20 \text{ N}$... 3 Edit Delete
19367 $\sqrt{34} \text{ m long ladder weighing } 10 \text{ kg leans on a frictionless wall. Its feet rest on the floor } 3 \text{ m away from the wall as shown in the figure.}$ $\text{If } F_f \text{ and } F_w \text{ are the reaction forces of the floor and the wall, then ratio of } F_w/F_f \text{ will be: (Take } g = 10 \text{ m/s}^2)$ 1 106 JEE MCQ NEW $\frac{6}{\sqrt{110}}$, $\frac{3}{\sqrt{113}}$... 3 Edit Delete
19366 $\text{A ball experiences an angular acceleration given by:}$ $\alpha = (6t^2 - 2t),$ $\text{where } t \text{ is in seconds.}$ $\text{At } t = 0, \text{ the ball has an angular velocity of } 10 \text{ rad/s and an angular}$ $\text{position of } 4 \text{ rad. Which of the following expressions correctly}$ $\text{represents the angular position } \theta(t) \text{ of the ball?}$ 1 106 JEE MCQ NEW $\frac{3}{2}t^4 - t^2 + 10t$, $\frac{t^4}{2} - \frac{t^3}{3} + 10t + 4$... 2 Edit Delete
19365 $\text{The position vector of a 1 kg object is } \vec{r} = (3\hat{i} + \hat{j}) \text{ m and its velocity vector is } \vec{v} = (3\hat{j} + \hat{k}) \text{ ms}^{-1}. \text{ If the magnitude of its angular momentum is } \sqrt{x} \text{ N-ms, then the value of } x \text{ will be:}$ 1 106 JEE MCQ NEW $67$, $91$... 2 Edit Delete
19364 $\text{Match List-I with List-II:}$ $\begin{array}{|c|c|} \hline \text{List-I} & \text{List-II} \\ \hline \text{(A) Moment of inertia of a solid sphere of radius } R \text{ about any tangent} & \text{(I) } \frac{5}{3} MR^2 \\ \text{(B) Moment of inertia of a hollow sphere of radius } R \text{ about any tangent} & \text{(II) } \frac{7}{5} MR^2 \\ \text{(C) Moment of inertia of a circular ring of radius } R \text{ about its diameter} & \text{(III) } \frac{1}{4} MR^2 \\ \text{(D) Moment of inertia of a circular disk of radius } R \text{ about any diameter} & \text{(IV) } \frac{1}{2} MR^2 \\ \hline \end{array}$ $\text{Codes:}$ $\text{1. A-II, B-I, C-IV, D-III}$ $\text{2. A-I, B-II, C-IV, D-III}$ $\text{3. A-II, B-I, C-III, D-IV}$ $\text{4. A-I, B-II, C-III, D-IV}$ 1 106 JEE MCQ NEW $\text{A-II, B-I, C-IV, D-III}$, $\text{A-I, B-II, C-IV, D-III}$... 1 Edit Delete
19363 $\text{Two blocks of masses } 10 \text{ kg and } 30 \text{ kg are placed on the same straight line with coordinates } (0, 0) \text{ cm and } (x, 0) \text{ cm respectively.}$ $\text{The block of } 10 \text{ kg is moved on the same line through a distance of } 6 \text{ cm towards the other block.}$ $\text{The distance through which the block of } 30 \text{ kg must be moved to keep the position of centre of mass of the system unchanged is:}$ 1 106 JEE MCQ NEW $4 \text{ cm towards the } 10 \text{ kg block}$, $2 \text{ cm away from the } 10 \text{ kg block}$... 3 Edit Delete
19362 $\text{A solid spherical ball is rolling on a frictionless horizontal plane surface about its axis of symmetry. The ratio of the rotational kinetic energy of the ball to its total kinetic energy is:}$ 1 106 JEE MCQ NEW $\frac{2}{5}$, $\frac{2}{7}$... 2 Edit Delete
19361 $\text{A thin circular ring of mass } M \text{ and radius } R \text{ is rotating with a constant angular velocity of } 2 \text{ rad/sec in a horizontal plane about an axis vertical to its plane and passing through the centre of the ring. If two objects each of mass } m \text{ be attached gently to the opposite ends of a diameter of the ring, the ring will then rotate with an angular velocity of:}$ 1 106 JEE MCQ NEW $\frac{M}{M + m} \text{ rad/s}$, $\frac{M + 2m}{2M} \text{ rad/s}$... 3 Edit Delete
19360 $\text{A flywheel is accelerated uniformly from rest and rotates through } 5 \text{ rad in the first second. The angle rotated by the flywheel in the next second will be:}$ 1 106 JEE MCQ NEW $7.5 \text{ rad}$, $15 \text{ rad}$... 2 Edit Delete
19359 $\text{A metre scale is balanced on a knife edge at its centre. When two coins, each of mass 10 g are put, one on the top of the other at the } 10.0 \text{ cm mark, the scale is found to be balanced at the } 40.0 \text{ cm mark. The mass of the metre scale is found to be } x \times 10^{-2} \text{ kg. The value of } x \text{ is:}$ 1 106 JEE MCQ NEW $3$, $4$... 4 Edit Delete
19358 $\text{Two masses } A \text{ and } B, \text{ each of mass } M \text{ are fixed together by a massless spring.}$ $\text{A force acts on the mass } B \text{ as shown in the figure.}$ $\text{If mass } A \text{ starts moving away from mass } B \text{ with acceleration } a,$ $\text{then the acceleration of mass } B \text{ will be:}$ 1 106 JEE MCQ NEW $\frac{Ma - F}{M}$, $\frac{MF}{F + Ma}$... 3 Edit Delete
19357 $\text{A cord is wound around the circumference of the wheel of radius } r. \text{ The axis of the wheel is horizontal and the moment of inertia about it is } I. \text{ A weight } mg \text{ is attached to the cord at the end. The weight falls from rest. After falling through a distance } h', \text{ the square of the angular velocity of the wheel will be:}$ 1 106 JEE MCQ NEW $\frac{2mgh}{I + 2mr^2}$, $\frac{2mgh}{I + mr^2}$... 2 Edit Delete
19356 $\text{As shown in the figure, four identical solid spheres, each of mass } m \text{ and radius } a, \text{ are placed at the corners of a square of side length } b. \text{ What is the moment of inertia of the system about a vertical axis that lies along one side of the square (i.e., passes through the centres of the two adjacent spheres on that side)?}$ 1 106 JEE MCQ NEW $\frac{4}{5}ma^2 + 2mb^2$, $\frac{8}{5}ma^2 + mb^2$... 3 Edit Delete
19355 $\text{A sphere of radius } 'a' \text{ and mass } 'm' \text{ rolls along a horizontal plane with constant speed } v_0. \text{ It encounters an inclined plane at angle } \theta \text{ and climbs upward. Assuming that it rolls without slipping, how far up the sphere will travel?}$ 1 106 JEE MCQ NEW $\frac{7v_0^2}{10g \sin \theta}$, $\frac{v_0^2}{5g \sin \theta}$... 1 Edit Delete
19354 $\text{A uniform thin bar of mass } 6 \text{ kg and length } 2.4 \text{ meter is bent to make an equilateral hexagon. The moment of inertia about an axis passing through the centre of mass and perpendicular to the plane of hexagon is:}$ 1 106 JEE MCQ NEW $0.8 \text{ kg m}^2$, $0.4 \text{ kg m}^2$... 1 Edit Delete
19353 $\text{A circular hole of radius } \frac{a}{2} \text{ is cut out of a circular disc of radius, } a \text{ as shown in the figure.}$ $\text{The centroid (centre-of-mass) of the remaining circular portion with respect to the point, } O \text{ will be:}$ 1 106 JEE MCQ NEW $\frac{1}{6}a$, $\frac{10}{11}a$... 3 Edit Delete
19352 $\text{The moments of inertia of four bodies, all having the same mass and radius, are reported as follows:}$ $I_1 \text{ Moment of inertia of thin circular ring about its diameter}$ $I_2 \text{ Moment of inertia of circular disc about an axis perpendicular to the disc and going through the centre}$ $I_3 \text{ Moment of inertia of solid cylinder about its axis}$ $I_4 \text{ Moment of inertia of solid sphere about its diameter}$ $\text{Which of the following relationships is correct?}$ 1 106 JEE MCQ NEW $I_1 + I_3 < I_2 + I_4$, $I_1 + I_2 = I_3 + \frac{5}{2} I_4$... 3 Edit Delete
19351 $\text{The centre-of-mass of a solid hemisphere of radius } 8 \text{ cm is located at a distance of } x \text{ cm from the centre of its flat circular surface. The value of } x \text{ is:}$ 1 106 JEE MCQ NEW $3$, $7$... 1 Edit Delete
19350 $\text{The linear mass density of a thin rod AB of length L varies from A to B as } \lambda(x) = \lambda_0 \left(1 + \frac{x}{L}\right), \text{ where } x \text{ is the distance from A. If the mass } M \text{ of the rod is } \frac{3 \lambda_0 L}{2}, \text{ then its moment of inertia about an axis passing through A and perpendicular to the rod is:}$ 1 106 JEE MCQ NEW $\frac{5}{12} ML^2$, $\frac{3}{7} ML^2$... 4 Edit Delete
19349 $\text{Shown in the figure is a hollow ice cream cone (it is open at the top).}$ $\text{If its mass is } M, \text{ radius of its top, } R \text{ and height, } H, \text{ then its moment}$ $\text{of Inertia about its axis is:}$ 1 106 JEE MCQ NEW $\frac{M \left(R^2 + H^2\right)}{4}$, $\frac{MR^2}{3}$... 3 Edit Delete
19348 $\text{Four point masses, each of mass } m \text{ are fixed at the corners of a square of side } l. \text{ The square is rotating with angular frequency } \omega, \text{ about an axis passing through one of the corners of the square and parallel to its diagonal, as shown in the figure. The angular momentum of the square about this axis is:}$ 1 106 JEE MCQ NEW $2ml^2\omega$, $ml^2\omega$... 3 Edit Delete
19347 $\text{A thin rod of mass } 0.9 \text{ kg and length } 1 \text{ m is suspended, at rest, from one end so that it can freely oscillate in the vertical plane.}$ $\text{A particle of mass } 0.1 \text{ kg moving in a straight line with velocity } 80 \text{ m/s hits the rod at its bottom most point and sticks to it (see figure).}$ $\text{The angular speed (in rad/s) of the rod immediately after the collision will be:}$ 1 106 JEE MCQ NEW $20$, $40$... 1 Edit Delete
19346 $\text{A force } \vec{F} = \hat{i} + 2\hat{j} + 3\hat{k} \text{ N acts at a point } 4\hat{i} + 3\hat{j} - \hat{k} \text{ m. Let the magnitude of the torque about the point } \hat{i} + 2\hat{j} + \hat{k} \text{ m be } \sqrt{x} \text{ N-m.}$ $\text{The value of } x \text{ is:}$ 1 106 JEE MCQ NEW $145$, $195$... 2 Edit Delete
19345 $\text{A wheel is rotating freely with an angular speed } \omega \text{ on a shaft. The moment of inertia of the wheel is } I \text{ and the moment of inertia of the shaft is negligible.}$ $\text{Another wheel of moment of inertia } 3I \text{ initially at rest is suddenly coupled to the same shaft.}$ $\text{The resultant fractional loss in the kinetic energy of the system is:}$ 1 106 JEE MCQ NEW $0$, $\frac{1}{4}$... 3 Edit Delete
19344 $\text{For a uniform rectangular sheet shown in the figure, if } I_O \text{ and } I_{O'} \text{ be moments of inertia about the axes perpendicular to the sheet and passing through } O \text{ (the centre of mass) and } O' \text{ (corner point), then:}$ 1 106 JEE MCQ NEW $I_{O'} = I_O$, $I_{O'} < I_O$... 3 Edit Delete
19343 $\text{Consider two uniform discs of the same thickness and different radii } R_1 = R \text{ and } R_2 = \alpha R \text{ made of the same material.}$ $\text{If the ratio of their moments of inertia } I_1 \text{ and } I_2, \text{ respectively, about their axes is } I_1 : I_2 = 1 : 16 \text{ then the value of } \alpha \text{ is:}$ 1 106 JEE MCQ NEW $\sqrt{2}$, $4$... 3 Edit Delete
19342 $\text{A circular disc of mass } M \text{ and radius } R \text{ is rotating about its axis with angular speed } \omega_1. \text{ If another stationary disc having radius } \frac{R}{2} \text{ and same mass } M \text{ is dropped co-axially on to the rotating disc. Gradually both discs attain constant angular speed } \omega_2. \text{ The energy lost in the process is } p\% \text{ of the initial energy. Value of } p \text{ is:}$ $1. \ 10$ $2. \ 20$ $3. \ 30$ $4. \ 40$ 1 106 JEE MCQ NEW $10$, $20$... 2 Edit Delete
19341 $ABC$ \text{ is a plane lamina of the shape of an equilateral triangle. } D, E \text{ are mid points of } AB, AC \text{ and } G \text{ is the centroid of the lamina. The moment of inertia of the lamina about an axis passing through } G \text{ and perpendicular to the plane } ABC \text{ is } I_0. \text{ If part } ADE \text{ is removed, the moment of inertia of the remaining part about the same axis is } \frac{NI_0}{16} \text{ where } N \text{ is an integer. Value of } N \text{ is:}$ 1 106 JEE MCQ NEW $3$, $20$... 3 Edit Delete
19340 $\text{An massless equilateral triangle } EFG \text{ of side } a \text{ (As shown in figure)}$ $\text{has three particles of mass } m \text{ situated at its vertices.}$ $\text{The moment of inertia of the system about the line } EX \text{ perpendicular to } EG$ $\text{in the plane of } EFG \text{ is } \frac{N}{20}ma^2 \text{ where } N \text{ is an integer.}$ $\text{The value of } N \text{ is:}$ 1 106 JEE MCQ NEW $10$, $15$... 4 Edit Delete
19339 $\text{Moment of inertia of a cylinder of mass } M, \text{ length } L \text{ and radius } R \text{ about an axis passing through its centre and perpendicular to the axis of the cylinder is } I = M \left( \frac{R^2}{4} + \frac{L^2}{12} \right).$ $\text{If such a cylinder is to be made for a given mass of a material, the ratio } \frac{L}{R} \text{ for it to have minimum possible } I \text{ is:}$ 1 106 JEE MCQ NEW $\frac{2}{3}$, $\frac{3}{2}$... 4 Edit Delete
19338 $\text{A square shaped hole of side } l = \frac{a}{2} \text{ is carved out at a distance } d = \frac{a}{2} \text{ from the centre } 'O' \text{ of a uniform circular disk of radius } a. \text{ If the distance of the centre of mass of the remaining portion from } O \text{ is } -\frac{a}{x} \text{ value of } x \text{ (to the nearest integer) is:}$ 1 106 JEE MCQ NEW $12$, $23$... 2 Edit Delete
19337 $\text{A uniform cylinder of mass } M \text{ and radius } R \text{ is to be pulled over a step of height } a \,(a < R) \text{ by applying a force } F \text{ at its centre } 'O' \text{ perpendicular to the plane through the axes of the cylinder on the edge of the step (see figure). The minimum value of } F \text{ required is:}$ 1 106 JEE MCQ NEW $Mg \sqrt{1 - \frac{a^2}{R^2}}$, $Mg \sqrt{\left(\frac{R}{R-a}\right)^2 - 1}$... 4 Edit Delete
19336 $\text{In the figure, there's a rigid and uniform rod } AB, \text{ one meter long, held horizontally by two strings tied to its ends and attached to the ceiling.}$ $\text{The rod has a mass of } m \text{ and another weight of the mass } 2m \text{ is hung at a distance of } 75 \text{ cm from } A. \text{ The tension in the string at the point } A \text{ is:}$ 1 106 JEE MCQ NEW $2mg$, $0.5mg$... 4 Edit Delete
19335 $\text{Three particles of masses } 100 \text{ g, } 150 \text{ g, and } 200 \text{ g respectively are placed at the vertices of an equilateral triangle of a side } 0.5 \text{ m long.}$ $\text{What is the position of the centre of mass of three particles?}$ 1 106 JEE MCQ NEW $\left( \frac{5}{18}, \frac{1}{3\sqrt{3}} \right)$, $\left( \frac{1}{4}, 0 \right)$... 1 Edit Delete
19334 $\text{A man (mass = 50 kg) and his son (mass = 20 kg) are standing on a frictionless surface facing each other. The man pushes his son so that he starts moving at a speed of } 0.70 \text{ ms}^{-1} \text{ with respect to the man. The speed of the man with respect to the surface is:}$ 1 106 JEE MCQ NEW $0.28 \text{ ms}^{-1}$, $0.47 \text{ ms}^{-1}$... 3 Edit Delete
19333 $\text{A circular disc of radius } b \text{ has a hole of radius } a \text{ at its centre (see figure).}$ $\text{If the mass per unit area of the disc varies as } \left( \frac{\sigma_0}{r} \right), \text{ then the radius of gyration of the disc about its axis passing through the centre is:}$ 1 106 JEE MCQ NEW $\frac{a+b}{3}$, $\sqrt{\frac{a^2+b^2+ab}{3}}$... 2 Edit Delete
19332 $\text{The time dependence of the position of a particle with mass}$ $m = 2 \text{ kg is given by:}$ $\vec{r}(t) = (2t\hat{i} - 3t^2\hat{j}) \text{ m.}$ $\text{Its angular momentum, with respect to the origin, at time } t = 2 \text{ s is:}$ 1 106 JEE MCQ NEW $36 \hat{k} \text{ kg-m}^2/\text{s}$, $-48 \hat{k} \text{ kg-m}^2/\text{s}$... 2 Edit Delete
19331 $\text{A metal coin of mass } 5 \text{ g and radius } 1 \text{ cm is fixed to a thin stick } AB \text{ of negligible mass as shown in the figure. The system is initially at rest. The constant torque, that will make the system rotate about } AB \text{ at } 25 \text{ rotations per second in } 5 \text{ s, is close to:}$ 1 106 JEE MCQ NEW $7.9 \times 10^{-6} \text{ Nm}$, $4.0 \times 10^{-6} \text{ Nm}$... 3 Edit Delete
19330 $\text{A particle of mass } m \text{ is moving along a trajectory given by:}$ $x = x_0 + a \cos \omega_1 t$ $y = y_0 + b \sin \omega_2 t$ $\text{The torque, acting on the particle about the origin, at } t = 0 \text{ is:}$ 1 106 JEE MCQ NEW $-m \left( x_0 b \omega_2^2 - y_0 a \omega_1^2 \right) \hat{k}$, $\text{zero}$... 3 Edit Delete
19329 $\text{A thin disc of mass } M \text{ and radius } R \text{ has mass per unit area } \sigma(r) = kr^2 \text{ where } r \text{ is the distance from its centre.}$ $\text{Its moment of inertia about an axis going through its centre of mass and perpendicular to its plane is:}$ 1 106 JEE MCQ NEW $\frac{2MR^2}{3}$, $\frac{MR^2}{6}$... 1 Edit Delete
19328 $\text{The moment of inertia of a body about a given axis is } 1.5 \text{ kg-m}^2.$ $\text{Initially, the body is at rest. In order to produce rotational kinetic}$ $\text{energy of } 1200 \text{ J, the angular acceleration of } 20 \text{ rad/s}^2 \text{ must be}$ $\text{applied about the axis for a duration of:}$ 1 106 JEE MCQ NEW $5 \text{ s}$, $3 \text{ s}$... 4 Edit Delete
19327 $\text{A thin smooth rod of length } L \text{ and mass } M \text{ is rotating freely with angular speed } \omega_0 \text{ about an axis perpendicular to the rod and passing through its center.}$ $\text{Two beads of mass } m \text{ and negligible size are at the center of the rod initially.}$ $\text{The beads are free to slide along the rod.}$ $\text{The angular speed of the system, when the beads reach the opposite ends of the rod, will be:}$ 1 106 JEE MCQ NEW $\frac{M \omega_0}{M + 3m}$, $\frac{M \omega_0}{M + 2m}$... 4 Edit Delete
19326 $\text{A stationary horizontal disc is free to rotate about its axis. When a torque is applied on it, its kinetic energy as a function of } \theta, \text{ where } \theta \text{ is the angle by which it has rotated, is given as } k\theta^2 \text{ (where } k \text{ is constant). If its moment of inertia is } I, \text{ then the angular acceleration of the disc is:}$ 1 106 JEE MCQ NEW $\frac{k}{I} \theta$, $\frac{k}{2I} \theta$... 4 Edit Delete
19325 $\text{A uniform rectangular thin sheet } ABCD \text{ of mass } M \text{ has length } a \text{ and breadth } b. \text{ If the shaded portion } HBGO \text{ is removed, the coordinates of the centre-of-mass of the remaining portion will be:}$ 1 106 JEE MCQ NEW $\left( \frac{5a}{3}, \frac{5b}{3} \right)$, $\left( \frac{2a}{3}, \frac{2b}{3} \right)$... 3 Edit Delete
19324 $\text{A rectangular solid box of length } 0.3 \text{ m is held horizontally, with one of its sides on the edge of a platform of height } 5 \text{ m.}$ $\text{When released, it slips off the table in a very short time } \tau = 0.01 \text{ s, remaining essentially horizontal.}$ $\text{The angle by which it would rotate when it hits the ground will be (in radians) close to:}$ 1 106 JEE MCQ NEW $0.5$, $0.02$... 1 Edit Delete
19323 $\text{A solid sphere and solid cylinder of identical radii approach an incline}$ $\text{with the same linear velocity (See figure). Both roll without slipping all}$ $\text{throughout. The two climb maximum heights } h_s \text{ and } h_c \text{ on the}$ $\text{incline. The ratio } \frac{h_s}{h_c} \text{ is given by:}$ 1 106 JEE MCQ NEW $\frac{2}{\sqrt{5}}$, $\frac{14}{15}$... 2 Edit Delete
19322 $\text{A uniform rod } AB \text{ is suspended from a point } X, \text{ at a variable distance } x \text{ from } A, \text{ as shown in the figure. To make the rod horizontal, a mass } m \text{ is suspended from its end } A. \text{ A set of } (m, x) \text{ values is recorded. The appropriate variables that are given a straight line, when plotted are:}$ 1 106 JEE MCQ NEW $m, x^2$, $m, \frac{1}{x^2}$... 3 Edit Delete
19321 $\text{From a uniform circular disc of radius } R \text{ and mass } 9M, \text{ a small disc of radius } \frac{R}{3} \text{ is removed as shown in the figure. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through centre of the disc is:}$ 1 106 JEE MCQ NEW $4MR^2$, $\frac{40}{9}MR^2$... 1 Edit Delete
19320 $\text{Seven identical circular planar disks, each of mass } M \text{ and radius } R \text{ are welded symmetrically as shown.}$ $\text{The moment of inertia of the arrangement about the axis normal to the plane and passing through the point } P \text{ is:}$ 1 106 JEE MCQ NEW $\frac{19}{2} MR^2$, $\frac{55}{2} MR^2$... 4 Edit Delete
19319 $\text{A circular hole of radius } \frac{R}{4} \text{ is made in a thin uniform disc having a mass } M \text{ and a radius } R, \text{ as shown in the figure.}$ $\text{The moment of inertia of the remaining portion of the disc about an axis passing through the point } O \text{ and perpendicular to the plane of the disc is:}$ 1 106 JEE MCQ NEW $\frac{219 \, MR^2}{256}$, $\frac{197 \, MR^2}{256}$... 4 Edit Delete
19318 $\text{A particle of mass } m \text{ is moving along side of a square of side } 'a', \text{ with a uniform speed } v \text{ in the x-y plane as shown in the figure:}$ $\text{Which of the following statements is false for the angular momentum } \vec{L} \text{ about the origin?}$ 1 106 JEE MCQ NEW $\vec{L} = -\frac{mvR}{\sqrt{2}} \hat{k} \text{ when the particle is moving from } A \text{ to } B.$, $\vec{L} = mv \left[ \frac{R}{\sqrt{2}} + a \right] \hat{k} \text{ when the particle is moving from } C \text{ to } D.$... 4 Edit Delete
19317 $\text{Consider a thin, uniform square sheet made of a rigid material. If its side is } a, \text{ mass } m \text{ and moment of inertia } I \text{ about one of its diagonals, then:}$ 1 106 JEE MCQ NEW $I > \frac{ma^2}{12}$, $I = \frac{ma^2}{12}$... 2 Edit Delete
19316 $\text{From a solid sphere of mass } M \text{ and radius } R \text{ a cube of maximum possible volume is cut.}$ $\text{The moment of inertia of a cube about an axis passing through its center and perpendicular to one of its faces is:}$ 1 106 JEE MCQ NEW $\frac{MR^2}{32\sqrt{2\pi}}$, $\frac{MR^2}{16\sqrt{2\pi}}$... 3 Edit Delete
19315 $\text{Distance of the centre of mass of a solid uniform cone from its vertex is } Z_0. \text{ If the radius of its base is } R \text{ and its height is } h \text{ then } Z_0 \text{ is equal to:}$ 1 106 JEE MCQ NEW $\frac{h^2}{4R}$, $\frac{3h}{4}$... 2 Edit Delete
19314 $\text{A mass } m \text{ is supported by a massless string wound around a uniform hollow cylinder of mass } m \text{ and radius } R. \text{ If the string does not slip on the cylinder, with what acceleration will the mass fall on release?}$ 1 106 JEE MCQ NEW $\frac{g}{2}$, $\frac{5g}{6}$... 1 Edit Delete
19313 $\text{A bob of mass } m \text{ attached to an inextensible string of length } l \text{ is suspended from a vertical support.}$ $\text{The bob rotates in a horizontal circle with an angular speed } \omega \text{ rad/s about the vertical.}$ $\text{About the point of suspension:}$ 1 106 JEE MCQ NEW $\text{angular momentum changes in magnitude but not in direction.}$, $\text{angular momentum changes in direction but not in magnitude.}$... 2 Edit Delete
19312 $\text{A particle of mass } m \text{ moves on a straight line with its velocity}$ $\text{increasing with distance according to the equation } v = \alpha \sqrt{x}, \text{ where}$ $\alpha \text{ is a constant. The total work done by all the forces applied on the}$ $\text{particle during its displacement from } x = 0 \text{ to } x = d, \text{ will be:}$ 1 105 JEE MCQ NEW $\frac{m}{2\alpha^2 d}$, $\frac{md}{2\alpha^2}$... 3 Edit Delete
19311 $\text{A stationary particle breaks into two parts of masses } m_\text{A} \text{ and } m_\text{B}$ $\text{which move with velocities } v_\text{A} \text{ and } v_\text{B} \text{ respectively. The ratio of their}$ $\text{kinetic energies } (K_\text{B} : K_\text{A}) \text{ is:}$ 1 105 JEE MCQ NEW $m_\text{B} : m_\text{A}$, $1 : 1$... 4 Edit Delete
19310 $\text{A bullet of mass } 50 \text{ g is fired with a speed } 100 \text{ m/s on a plywood and emerges with } 40 \text{ m/s. The percentage loss of kinetic energy is:}$ 1 105 JEE MCQ NEW $44\%$, $32\%$... 3 Edit Delete
19309 $\text{A body of } m \text{ kg slides from rest along the curve of vertical circle from point A to B in frictionless path. The velocity of the body at B is –}$ $\text{(given, } R = 14 \text{ m, } g = 10 \text{ m/s}^2 \text{ and } \sqrt{2} = 1.4)}$ 1 105 JEE MCQ NEW $21.9 \text{ m/s}$, $10.6 \text{ m/s}$... 1 Edit Delete
19308 $\text{In a simple pendulum of length } 10 \text{ m, the string is initially kept horizontal and the bob is released. } 10\% \text{ of energy is lost till the bob reaches the lowermost position. Then find the speed of the bob at the lowermost position.}$ 1 105 JEE MCQ NEW $6 \text{ m/s}$, $6\sqrt{5} \text{ m/s}$... 2 Edit Delete
19307 $\text{The body of a man } 100 \text{ kg travelled } 10 \text{ m before coming to rest. If } \mu = 0.4, \text{ then work done against friction is: (motion is happening on a horizontal surface, take } g = 10 \text{ m/s}^2)$ 1 105 JEE MCQ NEW $4500 \text{ J}$, $5000 \text{ J}$... 4 Edit Delete
19306 $\text{A variable force given by;} \ F = 5kx \ \text{(in newtons) acts on a body moving along the} \ x\text{-axis, where} \ k \ \text{is a constant.}$ $\text{What is the work done by this force as the body moves from} \ x = 2 \ m \ \text{to} \ x = 5 \ m?$ 1 105 JEE MCQ NEW $\left( \frac{205}{2} k \right) \ \text{J}$, $\left( \frac{105}{2} k \right) \ \text{J}$... 2 Edit Delete
19305 $\text{A particle of mass } m \text{ moving with velocity } v \text{ collides with a stationary}$ $\text{particle of mass } 2m \text{ and sticks to it. The velocity of the combined}$ $\text{mass (system) will be:}$ 1 105 JEE MCQ NEW $v$, $\frac{v}{2}$... 3 Edit Delete
19304 $\text{A ball was dropped from } 20 \text{ m height from the ground. The height up to which it rises after the collision is: (Use } e = \frac{1}{2}, g = 10 \text{ m/s}^2)$ $\text{1. } 3 \text{ m}$ $\text{2. } 5 \text{ m}$ $\text{3. } 10 \text{ m}$ $\text{4. } 6 \text{ m}$ 1 105 JEE MCQ NEW $3 \text{ m}$, $5 \text{ m}$... 2 Edit Delete
19303 $\text{Bob } P \text{ is released from the position of rest at the moment shown. If it collides elastically with an identical bob } Q \text{ hanging freely then the velocity of } Q \text{ just after the collision is: (Take } g = 10 \text{ m/s}^2)$ $l = 20 \text{ cm}$ 1 105 JEE MCQ NEW $4 \text{ m/s}$, $4 \text{ cm/s}$... 3 Edit Delete
19302 $\text{Two cylindrical vessels having equal cross-sectional areas of } 16 \text{ cm}^2 \text{ contain water up to heights } 100 \text{ cm and } 150 \text{ cm respectively. The vessels are interconnected so that the water levels in them become equal. The work done by the force of gravity during the process is:}$ $\text{[Take density of water } = 10^3 \text{ kg/m}^3 \text{ and } g = 10 \text{ ms}^{-2}]}$ 1 105 JEE MCQ NEW $0.25 \text{ J}$, $1 \text{ J}$... 2 Edit Delete
19301 $\text{A body of mass } 8 \text{ kg and another of mass } 2 \text{ kg are moving with equal kinetic energy. The ratio of their respective momenta will be:}$ 1 105 JEE MCQ NEW $1 : 1$, $2 : 1$... 2 Edit Delete
19300 $\text{A bag of sand of mass } 9.8 \text{ kg is suspended by a rope. A bullet of } 200 \text{ g traveling with speed } 10 \text{ ms}^{-1} \text{ gets embedded in it, then loss of kinetic energy will be:}$ 1 105 JEE MCQ NEW $4.9 \text{ J}$, $9.8 \text{ J}$... 2 Edit Delete
19299 $\text{A body of mass } M \text{ at rest explodes into three pieces, in the ratio of masses } 1 : 1 : 2. \text{ Two smaller pieces fly off perpendicular to each other with velocities of } 30 \text{ ms}^{-1} \text{ and } 40 \text{ ms}^{-1} \text{ respectively. The velocity of the third piece will be:}$ 1 105 JEE MCQ NEW $15 \text{ ms}^{-1}$, $25 \text{ ms}^{-1}$... 2 Edit Delete
19298 $\text{A man of } 60 \text{ kg is running on the road and suddenly jumps into a stationary trolly car of mass } 120 \text{ kg.}$ $\text{Then, the trolly car starts moving with a velocity of } 2 \text{ ms}^{-1}. \text{ The velocity of the running man just before jumping into trolly car was:}$ 1 105 JEE MCQ NEW $4 \text{ ms}^{-1}$, $2 \text{ ms}^{-1}$... 4 Edit Delete
19297 $\text{A stone tied to a string of length } L \text{ is whirled in a vertical circle with the other end of the string at the centre.}$ $\text{At a certain instant of time, the stone is at its lowest position and has a speed } u. \text{The magnitude of change in its velocity, as it reaches a position where the string is horizontal, is } \sqrt{x \left( u^2 - gL \right)}. \text{The value of } x \text{ is:}$ 1 105 JEE MCQ NEW $3$, $2$... 2 Edit Delete
19296 $\text{A pendulum of length 2 m consists of a wooden bob of mass 50 g. A bullet of mass 75 g is fired towards the stationary bob with a speed } v. \text{ The bullet emerges out of the bob with a speed } \frac{v}{3} \text{ and the bob just completes the vertical circle. The value of } v \text{ is: (if } g = 10 \text{ m/s}^2)$ 1 105 JEE MCQ NEW $10 \text{ ms}^{-1}$, $20 \text{ ms}^{-1}$... 1 Edit Delete
19295 $\text{What percentage of the kinetic energy of a moving particle is transferred to a stationary particle when it strikes the stationary particle of 5 times of its mass?}$ $\text{(Assume the collision to be a head-on elastic collision)}$ 1 105 JEE MCQ NEW $50.0\%$, $66.6\%$... 3 Edit Delete
19294 $\text{Arrange the four graphs in descending order of total work done;} \text{ where } W_1, W_2, W_3 \text{ and } W_4 \text{ are the work done corresponding to figures } a, b, c \text{ and } d \text{ respectively.}$ 1 105 JEE MCQ NEW $W_3 > W_2 > W_1 > W_4$, $W_3 > W_2 > W_4 > W_1$... 1 Edit Delete
19293 $\text{An object is thrown vertically upwards. At its maximum height, which of the following quantity becomes zero?}$ $1.\ \text{momentum}$ $2.\ \text{potential energy}$ $3.\ \text{acceleration}$ $4.\ \text{force}$ 1 105 JEE MCQ NEW $\text{momentum}$, $\text{potential energy}$... 1 Edit Delete
19292 $\text{A particle experiences a variable force } \vec{F} = (4x \hat{i} + 3y^2 \hat{j}) \text{ in a horizontal x-y plane. Assume distance in meters and force is in newton. If the particle moves from point } (1, 2) \text{ to point } (2, 3) \text{ in the x-y plane, the kinetic energy changes by:}$ 1 105 JEE MCQ NEW $50.0 \text{ J}$, $12.5 \text{ J}$... 3 Edit Delete
19291 $\text{Two particles having masses } 4 \text{ g and } 16 \text{ g respectively are moving with equal kinetic energies. The ratio of the magnitudes of their linear momentum is } n : 2. \text{ The value of } n \text{ will be:}$ 1 105 JEE MCQ NEW $4$, $3$... 4 Edit Delete
19290 $\text{A cricket ball of mass } 0.15 \text{ kg is thrown vertically up by a bowling machine so that it rises to a maximum height of } 20 \text{ m after leaving the machine.}$ $\text{If the part pushing the ball applies a constant force } F \text{ on the ball and moves horizontally a distance of } 0.2 \text{ m while launching the ball, the value of } F \text{ (in N) is: } (g = 10 \text{ m/s}^2)$ 1 105 JEE MCQ NEW $50$, $100$... 3 Edit Delete
19289 $\text{A force acts on a } 2 \text{ kg object so that its position is given as a function of time as;} \; x = 3t^2 + 5. \text{ What is the work done by this force in first } 5 \text{ seconds?}$ 1 105 JEE MCQ NEW $850 \text{ J}$, $950 \text{ J}$... 4 Edit Delete
19288 $\text{Three blocks } A, B \text{ and } C \text{ are lying on a smooth horizontal surface, as shown in the figure. } A \text{ and } B \text{ have equal masses, } m \text{ while } C \text{ has mass } M. \text{ Block } A \text{ is given an initial speed } v \text{ towards } B \text{ due to which it collides with } B \text{ perfectly inelastically. The combined mass collides with } C, \text{ also perfectly inelastically if } \frac{5}{6} \text{ th of the initial kinetic energy is lost in the whole process. The value of } (M/m) \text{ is:}$ 1 105 JEE MCQ NEW $5$, $2$... 3 Edit Delete
19287 $\text{A bullet of mass } 20 \text{ g has an initial speed of } 1 \text{ ms}^{-1}, \text{ just before it starts penetrating a mud wall of thickness } 20 \text{ cm.}$ $\text{If the wall offers a mean resistance of } 2.5 \times 10^{-2} \text{ N, the speed of the bullet after emerging from the other side of the wall is close to:}$ 1 105 JEE MCQ NEW $0.3 \text{ ms}^{-1}$, $0.1 \text{ ms}^{-1}$... 3 Edit Delete
19286 $\text{A body of mass } 2 \text{ kg makes an elastic collision with a second body at rest and continues to move in the original direction but with one fourth of its original speed. What is the mass of the second body?}$ 1 105 JEE MCQ NEW $1.5 \text{ kg}$, $1.2 \text{ kg}$... 2 Edit Delete
19285 $\text{Two particles of the same mass } m \text{ are moving in circular orbits}$ $\text{because of force given by } F(r) = \left( \frac{-16}{r} - r^3 \right) . \text{ The first particle is}$ $\text{at a distance } r = 1 \text{ and the second at } r = 4. \text{ The best estimate for}$ $\text{the ratio of kinetic energies of the first and the second particle is}$ $\text{closest to:}$ 1 105 JEE MCQ NEW $3 \times 10^{-3}$, $6 \times 10^{2}$... 3 Edit Delete
19284 $\text{A body of mass } m \text{ starts moving from rest along the } x\text{-axis so that its velocity varies as } v = a\sqrt{s} \text{ where } a \text{ is a constant and } s \text{ is the distance covered by the body. The total work done by all the forces acting on the body in the first } t \text{ seconds after the start of the motion is:}$ 1 105 JEE MCQ NEW $8ma^4t^2$, $\frac{1}{4}ma^4t^2$... 4 Edit Delete
19283 $\text{An object is dropped from a height } h \text{ from the ground. Every time it hits the ground it loses } 50\% \text{ of its kinetic energy. The total distance covered as } t \rightarrow \infty \text{ is:}$ 1 105 JEE MCQ NEW $\frac{5}{3}h$, $\infty$... 4 Edit Delete
19282 $\text{A particle is moving in a circle of radius } r \text{ under the action of a force } F = \alpha r^2 \text{ which is directed towards centre of the circle.}$ $\text{The total mechanical energy (kinetic energy + potential energy) of the particle is:}$ $\text{(take potential energy } = 0 \text{ for } r = 0)}$ 1 105 JEE MCQ NEW $\frac{1}{2} \alpha r^3$, $\frac{5}{6} \alpha r^3$... 2 Edit Delete
19281 $\text{A block of mass } m = 0.1 \text{ kg is connected to a spring of unknown spring constant } k. \text{ It is compressed to a distance } x \text{ from rest.}$ $\text{After approaching half the distance } \left( \frac{x}{2} \right) \text{ from the equilibrium position, it hits another identical block and comes to rest momentarily,}$ $\text{while the other block moves with a velocity } 3 \text{ ms}^{-1}. \text{ The total initial energy of the spring is:}$ 1 105 JEE MCQ NEW $0.3 \text{ J}$, $0.6 \text{ J}$... 2 Edit Delete
19280 $\text{A ball is released from a height of } 1 \text{ m on a smooth hemispherical surface as shown in the figure.}$ $\text{The velocity of the ball when it is at a height of } 0.5 \text{ m is:}$ $\text{(Take } g = 10 \text{ m/s}^2)$ 1 105 JEE MCQ NEW $20 \text{ m/s}$, $10 \text{ m/s}$... 3 Edit Delete
19279 $\text{A particle attached to a light, inextensible string undergoes vertical circular motion. The speed at the lowest point } B \text{ is just sufficient for the particle to complete the full circle. Ignoring air resistance, what is the ratio of kinetic energy at the highest point } A \text{ to that at the lowest point } B?$ 1 105 JEE MCQ NEW $1 : 5$, $5 : 1$... 1 Edit Delete
19278 $\text{The potential energy function corresponding to a conservative force is given as } U(x, y, z) = \frac{3x^2}{2} + 5y + 6z, \text{ then the force at } x = 6 \text{ is } P \text{ N. The value of } P \text{ up to its nearest integral value is:}$ $1. \ 20$ $2. \ 40$ $3. \ 30$ $4. \ 60$ 1 105 JEE MCQ NEW $20$, $40$... 1 Edit Delete
19277 $\text{Two particles of masses } m_1 = 4 \text{ g and } m_2 = 25 \text{ g possess the same kinetic energy.}$ $\text{What is the ratio of the magnitudes of their linear momenta } \frac{p_1}{p_2}?$ 1 105 JEE MCQ NEW $1 : 5$, $2 : 5$... 2 Edit Delete
19276 $\text{Given below are two statements:}$ $\text{Statement I:}$ $\text{A truck and a car moving with equal kinetic energy are stopped by an equal retarding force. Both will cover equal distances to stop.}$ $\text{Statement II:}$ $\text{A car moving towards the east suddenly changes its direction towards the north with the same speed. In this case, its acceleration will be zero.}$ 1 105 JEE MCQ NEW $\text{Both Statement I and Statement II are True.}$, $\text{Both Statement I and Statement II are False.}$... 3 Edit Delete
19275 $\text{A } 500 \text{ kg object slides across a horizontal surface where the coefficient of kinetic friction is } \mu = 0.7.$ $\text{To maintain a constant velocity of } 10 \text{ m/s, an external force is applied horizontally in the direction of motion.}$ $\text{The object travels a total distance of } 4 \text{ km under these conditions.}$ $\text{The work done by the external force is:}$ 1 105 JEE MCQ NEW $3.5 \times 10^6 \text{ J}$, $28 \times 10^6 \text{ J}$... 4 Edit Delete
19274 $\text{How much power is delivered by a force, } F \text{ at } t = 10 \text{ s (see figure), assuming the body starts from rest? (take } g = 10 \text{ m/s}^2)$ 1 105 JEE MCQ NEW $50 \text{ W}$, $30 \text{ W}$... 2 Edit Delete
19273 $\text{A particle is constrained to move along the } x\text{-axis under the action of a force:}$ $\vec{F} = (2 + 3x)\hat{i}.$ $\text{What is the work done by this force when the particle is displaced from } x = 0 \text{ to } x = 4 \text{ m?}$ 1 105 JEE MCQ NEW $16 \text{ J}$, $32 \text{ J}$... 2 Edit Delete
19272 $\text{A lift with a mass of } 1400 \text{ kg moves upwards at a constant velocity of } 3 \text{ m/s, and experiences a frictional force of } 2000 \text{ N.}$ $\text{What is the power of the motor driving the lift? (take } g = 10 \text{ m/s}^2)$ 1 105 JEE MCQ NEW $48 \text{ kW}$, $24 \text{ kW}$... 1 Edit Delete
19271 $\text{An object } A \text{ is released from a height } h \text{ such that the ratio of its speed before striking the ground and after striking the ground is } 4:1. \text{ If loss of kinetic energy is } \frac{x}{4}\% \text{ then value of } x \text{ is}$ 1 105 JEE MCQ NEW 225, 50... 3 Edit Delete
19270 $\text{At equilibrium position, a } 75 \text{ N force starts is acting on the block attached with the spring as shown in the figure. Maximum extension in the spring is:}$ 1 105 JEE MCQ NEW $1 \text{ m}$, $3 \text{ m}$... 4 Edit Delete
19269 $\text{A block of mass } 100 \text{ grams is placed on a smooth surface and moves with an acceleration of } a = 2x. \text{ The change in kinetic energy can be given as } \left( \frac{x^n}{10} \right). \text{ The value of } n \text{ is:}$ 1 105 JEE MCQ NEW $4$, $3$... 4 Edit Delete
19268 $\text{If a force } F \text{ applied on an object moving along the } y\text{-axis varies with the } y\text{-coordinate as } F = 3 + 2y^2. \text{ The work done in displacing the body from } y = 2 \text{ m to } y = 5 \text{ m is:}$ 1 105 JEE MCQ NEW $87 \text{ J}$, $0$... 1 Edit Delete
19267 $\text{A lift of mass } 500 \text{ kg starts moving downwards with an initial speed of } 2 \text{ m/s and accelerates at a rate of } 2 \text{ m/s}^2. \text{ The kinetic energy of the lift when it has moved } 6 \text{ m down, is:}$ $1. \ 3 \text{ J}$ $2. \ 3 \text{ kJ}$ $3. \ 7 \text{ J}$ $4. \ 7 \text{ kJ}$ 1 105 JEE MCQ NEW $3 \text{ J}$, $3 \text{ kJ}$... 4 Edit Delete
19266 $\text{A particle of mass } m \text{ is moving under a force whose delivered power } P \text{ is constant.}$ $\text{The initial velocity of the particle is zero.}$ $\text{The position of a particle at } t = 4 \text{ s is:}$ 1 105 JEE MCQ NEW $\frac{16}{3} \sqrt{\frac{2P}{m}}$, $\frac{4}{3} \sqrt{\frac{2P}{m}}$... 1 Edit Delete
19265 $\text{A bullet strikes a stationary ball kept at a height as shown. After the collision, range of the bullet is } 120 \text{ m and that of ball is } 30 \text{ m.}$ $\text{Collision is along horizontal direction. The initial speed of the bullet is: (Take } g = 10 \text{ m/s}^2)$ 1 105 JEE MCQ NEW $150 \text{ m/s}$, $90 \text{ m/s}$... 4 Edit Delete
19264 $\text{A particle of mass } 1 \text{ kg is moving with a velocity towards a stationary particle of mass } 3 \text{ kg.}$ $\text{After the collision, the lighter particle returns along the same path with speed } 2 \text{ m/s.}$ $\text{If the collision was elastic, then speed of } 1 \text{ kg particle before collision is:}$ 1 105 JEE MCQ NEW $2 \text{ m/s}$, $6 \text{ m/s}$... 4 Edit Delete
19263 $\text{A constant force acts on a body of mass } 1 \text{ kg, providing it a kinetic energy of } 1800 \text{ J by the end of } 5^{\text{th}} \text{ second. If the body was initially at rest, at the beginning of the action of force, then the magnitude of the force is equal to:}$ 1 105 JEE MCQ NEW $30 \text{ N}$, $12 \text{ N}$... 2 Edit Delete
19262 $\text{A block of mass } m \text{ (as shown in the figure) moving with kinetic energy } E \text{ compresses a spring through a distance } 25 \text{ cm when, its speed is halved. The value of the spring constant of the used spring is } nE \text{ Nm}^{-1}. \text{ The value of } n \text{ will be:}$ 1 105 JEE MCQ NEW $32$, $24$... 2 Edit Delete
19261 $\text{The velocity of the bullet becomes one third after it penetrates 4 cm in a wooden block.}$ $\text{Assume that bullet is facing constant resistance during its motion in the block.}$ $\text{The bullet stops completely after travelling at } (4 + x) \text{ cm inside the block.}$ $\text{The value of } x \text{ is:}$ 1 105 JEE MCQ NEW $2.0$, $1.0$... 3 Edit Delete
19260 $\text{Sand is being dropped from a stationary dropper at a rate of } 0.5 \text{ kgs}^{-1}$ $\text{on a conveyor belt moving with a velocity of } 5 \text{ ms}^{-1}. \text{ The power needed to keep the belt moving with the same velocity will be:}$ 1 105 JEE MCQ NEW $1.25 \text{ W}$, $2.5 \text{ W}$... 3 Edit Delete
19259 $\text{As per the given figure, two blocks each of mass } 250 \text{ g are connected to a spring of spring constant } 2 \text{ Nm}^{-1}. \text{ If both are given velocity } v \text{ in opposite directions, then the maximum elongation of the spring is:}$ 1 105 JEE MCQ NEW $\frac{v}{2\sqrt{2}}$, $\frac{v}{2}$... 2 Edit Delete
19258 $\text{A body of mass } 0.5 \text{ kg travels on a straight line path with velocity } v = (3x^2 + 4) \text{ m/s. The net work done by the force during its displacement from } x = 0 \text{ to } x = 2 \text{ m is:}$ $1. \ 64 \text{ J}$ $2. \ 60 \text{ J}$ $3. \ 120 \text{ J}$ $4. \ 128 \text{ J}$ 1 105 JEE MCQ NEW $64 \text{ J}$, $60 \text{ J}$... 2 Edit Delete
19257 $\text{In the given figure, the block of mass } m \text{ is dropped from point } A. \text{ The expression for the kinetic energy of the block when it reaches point } B \text{ is:}$ 1 105 JEE MCQ NEW $\frac{1}{2} m g y_0^2$, $\frac{1}{2} m g y^2$... 4 Edit Delete
19256 $\text{A particle of mass } 500 \text{ g is moving in a straight line with velocity } v = bx^{5/2}. \text{ The work done by the net force during its displacement from } x = 0 \text{ to } x = 4 \text{ m is:}$ $\text{(Take } b = 0.25 \text{ m}^{-3/2} \text{ s}^{-1})$ 1 105 JEE MCQ NEW $2 \text{ J}$, $4 \text{ J}$... 4 Edit Delete
19255 $\text{Water is falling from a } 40 \text{ m high dam at the rate of } 9 \times 10^4 \text{ kg per hour.}$ $\text{Fifty percent of gravitational potential energy can be converted}$ $\text{into electrical energy. Using this hydroelectric energy number of } 100 \text{ W}$ $\text{bulbs, that can be lit, is:}$ $\text{(Take } g = 10 \text{ ms}^{-2})$ 1 105 JEE MCQ NEW $25$, $50$... 2 Edit Delete
19254 $\text{A block of mass } 2 \text{ kg, moving with a speed of } 4 \text{ m/s on a horizontal surface enters a rough region extending from } x = 0.5 \text{ m to } x = 1.5 \text{ m. In this region, the retarding force is given by } F = -kx \text{ with } k = 12 \text{ N/m. What will be the speed of the block as it just emerges from the rough surface?}$ 1 105 JEE MCQ NEW $0$, $1.5 \text{ m/s}$... 3 Edit Delete
19253 $\text{A particle of mass } m \text{ is moving in a circular path of constant radius } r$ $\text{such that its centripetal acceleration } (a) \text{ is varying with time } t \text{ as}$ $a = k^2 r t^2 \text{ where } k \text{ is a constant. The power delivered to the particle}$ $\text{by the force acting on it is given as:}$ 1 105 JEE MCQ NEW $\text{zero}$, $m k^2 r^2 t^2$... 3 Edit Delete
19252 $\text{Potential energy as a function of } r \text{ is given by;} \ U = \frac{A}{r^{10}} - \frac{B}{r^5},$ $\text{where } r \text{ is the interatomic distance, and } A \text{ and } B \text{ are positive}$ $\text{constants. The equilibrium distance between the two atoms will be:}$ 1 105 JEE MCQ NEW $\left( \frac{A}{B} \right)^{1/5}$, $\left( \frac{B}{A} \right)^{1/5}$... 3 Edit Delete
19251 $\text{A ball with a mass of } 100 \text{ g is dropped from a height of } h = 10 \text{ cm}$ $\text{onto a platform fixed at the top of a vertical spring (as shown in the figure).}$ $\text{The ball remains on the platform, and the platform is}$ $\text{depressed by a distance of } \frac{h}{2}. \text{ The spring constant is: (use } g = 10 \text{ ms}^{-2})$ 1 105 JEE MCQ NEW $100 \text{ Nm}^{-1}$, $110 \text{ Nm}^{-1}$... 3 Edit Delete
19250 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{Body 'P' having mass } M \text{ moving with speed } 'u' \text{ has head-on collision elastically with another body 'Q' having mass } 'm' \text{ initially at rest. If } m \ll M, \text{ body 'Q' will have a maximum speed equal to } '2u' \text{ after collision.}$ $\text{Reason (R):}$ \text{During elastic collision, the momentum and kinetic energy are both conserved.}$ 1 105 JEE MCQ NEW $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19249 $\text{A small bob, attached to one end of a thin string of length } 1 \text{ m, is performing vertical circular motion.}$ $\text{The ratio of the maximum tension to the minimum tension in the string is } 5 : 1.$ $\text{What is the bob's velocity at the highest point?}$ $\text{(take } g = 10 \text{ m/s}^2)$ 1 105 JEE MCQ NEW $2 \text{ m/s}$, $5 \text{ m/s}$... 2 Edit Delete
19248 $\text{Two solids } A \text{ and } B \text{ of mass } 1 \text{ kg and } 2 \text{ kg respectively are moving with equal linear momentum. The ratio of their kinetic energies } (KE)_A : (KE)_B \text{ will be:}$ 1 105 JEE MCQ NEW $1 : 2$, $2 : 1$... 2 Edit Delete
19247 $\text{A ball with a speed of } 9 \text{ m/s collides with another identical ball at rest.}$ $\text{After the collision, the direction of each ball makes an angle of } 30^\circ$ $\text{with the original direction. The ratio of velocities of the balls after collision is:}$ 1 105 JEE MCQ NEW $1 : 1$, $2 : 1$... 1 Edit Delete
19246 $\text{Particle } A \text{ of mass } m_1 \text{ moving with velocity } (\hat{i} + \hat{j}) \text{ ms}^{-1} \text{ collides}$ $\text{with another particle } B \text{ of mass } m_2 \text{ which is at rest initially. Let } \vec{v}_1$ $\text{and } \vec{v}_2 \text{ be the velocities of particles } A \text{ and } B \text{ after collision}$ $\text{respectively. If } m_1 = 2m_2 \text{ and after collision } \vec{v}_1 = (\hat{i} - \hat{j}) \text{ ms}^{-1}$ $\text{then the final velocity of the particle } B \text{ is:}$ 1 105 JEE MCQ NEW $(2\hat{i} + \hat{j}) \text{ ms}^{-1}$, $(2\hat{i} - \hat{j}) \text{ ms}^{-1}$... 3 Edit Delete
19245 $\text{Two bodies of the same mass are moving with the same speed, but in different directions in a plane. They have a completely inelastic collision and move together thereafter with a final speed which is half of their initial speed. The angle between the initial velocities of the two bodies (in degree) is:}$ 1 105 JEE MCQ NEW $30^\circ$, $60^\circ$... 4 Edit Delete
19244 $\text{If the potential energy between two molecules is given by}$ $U = -\frac{A}{r^6} + \frac{B}{r^{12}},$ $\text{then the potential energy at equilibrium separation between molecules is:}$ 1 105 JEE MCQ NEW $-\frac{A^2}{2B}$, $-\frac{A^2}{4B}$... 2 Edit Delete
19243 $\text{A body of mass } 2 \text{ kg is driven by an engine delivering constant power } 1 \text{ J/s.}$ $\text{The body starts from rest and moves in a straight line.}$ $\text{After } 9 \text{ s, the kinetic energy of the body is:}$ 1 105 JEE MCQ NEW $4.5 \text{ J}$, $9 \text{ J}$... 2 Edit Delete
19242 $\text{A person pushes a box on a rough horizontal platform surface. He applies a force of } 200 \text{ N over a distance of } 15 \text{ m. Thereafter, he gets progressively tired and his applied force reduces linearly with distance to } 100 \text{ N. The total distance through which the box has been moved is } 30 \text{ m. What is the work done by the person during the total movement of the box?}$ 1 105 JEE MCQ NEW $5690 \text{ J}$, $3280 \text{ J}$... 4 Edit Delete
19241 $\text{Blocks of masses } m, 2m, 4m \text{ and } 8m \text{ are arranged in a line on a frictionless floor.}$ $\text{Another block of mass } m, \text{ moving with speed } v \text{ along the same line (see figure) collides with mass } m \text{ in perfectly inelastic manner.}$ $\text{All the subsequent collisions are also perfectly inelastic.}$ $\text{By the time the last block of mass } 8m \text{ starts moving, the total energy loss is } p\% \text{ of the original energy.}$ $\text{Value of } 'p' \text{ is close to:}$ 1 105 JEE MCQ NEW 37, 94... 2 Edit Delete
19240 $\text{A block of mass } 1.9 \text{ kg is at rest at the edge of a table, of height } 1 \text{ m.}$ $\text{A bullet of mass } 0.1 \text{ kg collides with the block and sticks to it.}$ $\text{If the velocity of the bullet is } 20 \text{ m/s in the horizontal direction just before the collision}$ $\text{then the kinetic energy just before the combined system strikes the floor, is:}$ $[\text{Take } g = 10 \text{ m/s}^2.]$ $\text{Assume there is no rotational motion and loss of energy after the collision is negligible.}$ 1 105 JEE MCQ NEW $21 \text{ J}$, $23 \text{ J}$... 1 Edit Delete
19239 $\text{A particle moves unidirectionally on a horizontal plane, under a constant power-supplying energy source. The displacement-time } (s-t) \text{ graph that describes the motion of the particle is: (graphs are drawn schematically and are not to scale)}$ 1 105 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
19238 $\text{A particle of mass } m \text{ is moving along the } x\text{-axis with an initial velocity } ui\hat{}. \text{ It undergoes an elastic collision with another particle of mass } 10m, \text{ which is initially at rest. After the collision, the first particle retains half of its initial kinetic energy (as shown in the figure). If } \sin \theta_1 = \sqrt{n} \sin \theta_2, \text{ then the value of } n \text{ is:}$ 1 105 JEE MCQ NEW $5$, $10$... 2 Edit Delete
19237 $\text{A small block starts slipping down from a point } B \text{ on an inclined plane } AB, \text{ which is making an angle } \theta \text{ with the horizontal. Section } BC \text{ is smooth and the remaining section } CA \text{ is rough with a coefficient of friction } \mu. \text{ It is found that the block comes to rest as it reaches the bottom (point } A) \text{ of the inclined plane. If } BC = 2AC, \text{ the coefficient of friction is given by } \mu = k \tan \theta. \text{ The value of } k \text{ is:}$ 1 105 JEE MCQ NEW $4$, $3$... 2 Edit Delete
19236 $\text{A particle of mass } m \text{ with an initial velocity } u\hat{i} \text{ collides perfectly}$ $\text{elastically with a mass } 3m \text{ at rest. It moves with a velocity } v\hat{j} \text{ after}$ $\text{collision, then, } v \text{ is given by:}$ 1 105 JEE MCQ NEW $v = \sqrt{\frac{2}{3}} u$, $v = \frac{1}{\sqrt{6}} u$... 4 Edit Delete
19235 $\text{Two particles, of masses } M \text{ and } 2M, \text{ moving, as shown, with speeds of } 10 \text{ m/s and } 5 \text{ m/s, collide elastically at the origin.}$ $\text{After the collision, they move along the indicated directions with speeds } v_1 \text{ and } v_2, \text{ respectively.}$ $\text{The values of } v_1 \text{ and } v_2 \text{ are nearly:}$ 1 105 JEE MCQ NEW $3.2 \text{ m/s and } 12.6 \text{ m/s}$, $3.2 \text{ m/s and } 6.3 \text{ m/s}$... 3 Edit Delete
19234 $\text{A wedge of mass } M = 4m \text{ lies on a frictionless surface. A particle of mass } m \text{ approaches the wedge with speed } v. \text{ There is no friction between the particle and the plane, nor between the particle and the wedge. The maximum height reached by the particle on the wedge is given by:}$ 1 105 JEE MCQ NEW $\frac{2v^2}{7g}$, $\frac{v^2}{2g}$... 3 Edit Delete
19233 $\text{A particle of mass } m \text{ is moving at a speed of } 2v \text{ and collides with another particle of mass } 2m, \text{ which is moving at a speed of } v \text{ in the same direction.}$ $\text{After the collision, the first mass comes to a complete stop, while the second mass splits into two particles, each of mass } m, \text{ which moves at an angle of } 45^\circ \text{ with respect to the original direction.}$ $\text{The speed of each of the moving particles will be:}$ 1 105 JEE MCQ NEW $\sqrt{2}v$, $\frac{v}{2\sqrt{2}}$... 4 Edit Delete
19232 $\text{A uniform cable of mass } M \text{ and length } L \text{ is placed on a horizontal surface such that its } \left( \frac{1}{n} \right)^{\text{th}} \text{ part is hanging below the edge of the surface. To lift the hanging part of the cable up to the surface, the work done should be:}$ 1 105 JEE MCQ NEW $nMgL$, $\frac{MgL}{2n^2}$... 2 Edit Delete
19231 $\text{A body of mass } m_1 \text{ moving with an unknown velocity of } v_1 \hat{i}, \text{ undergoes a collinear collision with a body of mass } m_2 \text{ moving with a velocity } v_2 \hat{i}. \text{ After collision, } m_1 \text{ and } m_2 \text{ move with velocities of } v_3 \hat{i} \text{ and } v_4 \hat{i}, \text{ respectively. If } m_2 = 0.5m_1 \text{ and } v_3 = 0.5v_1, \text{ then } v_1 \text{ is:}$ 1 105 JEE MCQ NEW $v_4 - \frac{v_2}{4}$, $v_4 + v_2$... 4 Edit Delete
19230 $\text{A particle moves in one dimension from rest under the influence of a force that varies with the distance travelled by the particle as shown in the figure. The kinetic energy of the particle after it has travelled } 3 \text{ m is:}$ 1 105 JEE MCQ NEW $2.5 \text{ J}$, $6.5 \text{ J}$... 2 Edit Delete
19229 $\text{It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is } P_d; \text{ while for its similar collision with carbon nucleus at rest, fractional loss of energy is } P_c. \text{ The values of } P_d \text{ and } P_c \text{ are respectively:}$ 1 105 JEE MCQ NEW $0.89, \ 0.28$, $0.28, \ 0.89$... 1 Edit Delete
19228 $\text{In a collinear collision, a particle with an initial speed } v_0 \text{ strikes a stationary particle of the same mass.}$ $\text{If the final total kinetic energy is } 50\% \text{ greater than the original kinetic energy,}$ $\text{the magnitude of the relative velocity between the two particles, after collision, is:}$ 1 105 JEE MCQ NEW $\frac{v_0}{4}$, $\sqrt{2}v_0$... 2 Edit Delete
19227 $\text{A particle is moving along a circular path with a radius } a, \text{ under the influence of an attractive force. The potential energy associated with the particle is given by: } U = -\frac{k}{2r^2}. \text{ The attractive force acting on the particle is:}$ 1 105 JEE MCQ NEW $\frac{k}{4a^3}$, $\frac{k}{2a^3}$... 3 Edit Delete
19226 $\text{Two particles } A \text{ and } B \text{ of equal mass } M \text{ are moving with the same speed } v \text{ as shown in the figure.}$ $\text{They collide completely inelastically and move as a single particle } C. \text{ The angle } \theta \text{ that the path of } C \text{ makes with the } x\text{-axis is given by:}$ 1 105 JEE MCQ NEW $\tan \theta = \frac{\sqrt{3} + \sqrt{2}}{1 - \sqrt{2}}$, $\tan \theta = \frac{1 - \sqrt{3}}{1 + \sqrt{2}}$... 1 Edit Delete
19225 $\text{A time dependent force } F = 6t \text{ acts on a particle of mass } 1 \text{ kg. If the particle starts from rest, the work done by the force during the first } 1 \text{ s will be:}$ $1. \ 4.5 \text{ J}$ $2. \ 22 \text{ J}$ $3. \ 9 \text{ J}$ $4. \ 18 \text{ J}$ 1 105 JEE MCQ NEW $4.5 \text{ J}$, $22 \text{ J}$... 1 Edit Delete
19224 $\text{A person trying to lose weight by burning fat lifts a mass of } 10 \text{ kg}$ $\text{up to a height of } 1 \text{ m } 1000 \text{ times. Assume that the potential energy}$ $\text{lost each time he lowers the mass is dissipated. How much fat will}$ $\text{he use up considering the work done only when the weight is lifted}$ $\text{up? Fat supplies } 3.8 \times 10^7 \text{ J of energy per kg which is converted to}$ $\text{mechanical energy with a } 20\% \text{ efficiency rate. Take } g = 9.8 \text{ ms}^{-2}.$ 1 105 JEE MCQ NEW $2.45 \times 10^{-3} \text{ kg}$, $6.45 \times 10^{-3} \text{ kg}$... 4 Edit Delete
19223 $\text{A point particle of mass } m, \text{ moves along the uniformly rough track } PQR \text{ as shown in the figure. The coefficient of friction, between the particle and the rough track equals } \mu. \text{ The particle is released, from rest, from the point } P \text{ and it comes to rest at a point } R. \text{ The energies, lost by the ball, over the parts, } PQ \text{ and } QR, \text{ of the track, are equal to each other, and no energy is lost when the particle changes direction from } PQ \text{ to } QR. \text{ The values of the coefficient of friction } \mu \text{ and the distance } x \ (= QR), \text{ are, respectively close to:}$ 1 105 JEE MCQ NEW $0.2 \text{ and } 6.5 \text{ m}$, $0.2 \text{ and } 3.5 \text{ m}$... 3 Edit Delete
19222 $\text{A large number } (n) \text{ of identical beads, each of mass } m \text{ and radius } r$ $\text{are strung on a thin smooth rigid horizontal rod of length } L (L \gg r)$ $\text{and are at rest at random positions. The rod is mounted}$ $\text{between two rigid supports (see figure). If one of the beads is now}$ $\text{given a speed } v, \text{ the average force experienced by each support after}$ $\text{a long time is: (assume all collisions are elastic)}$ 1 105 JEE MCQ NEW $\frac{mv^2}{2(L-nr)}$, $\frac{mv^2}{L-2nr}$... 2 Edit Delete
19221 $\text{A particle of mass } m \text{ moving in the } x \text{ direction with speed } 2v \text{ is hit by another particle of mass } 2m \text{ moving in the } y \text{ direction with speed } v. \text{ If the collision is perfectly inelastic, the percentage loss in the energy during the collision is close to:}$ 1 105 JEE MCQ NEW $44\%$, $50\%$... 3 Edit Delete
19220 $\text{When a rubber band is stretched by a distance } x, \text{ it exerts a restoring}$ $\text{force given by: } F = (ax + bx^2), \text{ where } a \text{ and } b \text{ are constants.}$ $\text{What is the total work done in stretching the rubber band from its natural}$ $\text{(unstretched) length to a length } L?$ 1 105 JEE MCQ NEW $\frac{1}{2}(aL^2 + bL^3)$, $\left(\frac{aL^2}{2} + \frac{bL^3}{3}\right)$... 2 Edit Delete
19219 $A \ 1 \ \text{kg} \ \text{mass is suspended from the ceiling by a rope of length} \ 4 \ \text{m.}$ $\text{A horizontal force} \ 'F' \ \text{is applied at the midpoint of the rope so that the rope makes an angle of} \ 45^\circ \ \text{with respect to the vertical axis as shown in figure.}$ $\text{The magnitude of} \ F \ \text{is: (Assume that the system is in equilibrium and} \ g = 10 \ \text{m/s}^2)$ 1 104 JEE MCQ NEW $10 \ \text{N}$, $1 \ \text{N}$... 1 Edit Delete
19218 $\text{A light unstretchable string passing over a smooth light pulley connects two blocks of masses } m_1 \text{ and } m_2. \text{ If the acceleration of the system is } \frac{g}{8}, \text{ then the ratio of the masses } \frac{m_2}{m_1} \text{ is:}$ 1 104 JEE MCQ NEW $4 : 3$, $5 : 3$... 4 Edit Delete
19217 $\text{A player caught a cricket ball of mass } 150 \text{ g moving at a speed of } 20 \text{ m/s.}$ $\text{If the catching process is completed in } 0.1 \text{ s, the magnitude of force exerted by the ball on the hand of the player is:}$ 1 104 JEE MCQ NEW $150 \text{ N}$, $3 \text{ N}$... 3 Edit Delete
19216 $\text{A body of weight } 200 \text{ N is suspended from a tree branch through a chain of mass } 10 \text{ kg. The branch pulls the chain by a force equal to (if } g = 10 \text{ m/s}^2):$ 1 104 JEE MCQ NEW $300 \text{ N}$, $150 \text{ N}$... 1 Edit Delete
19215 $\text{A car of } 800 \text{ kg is taking turn on a banked road of radius } 300 \text{ m and angle of banking } 30^\circ . \text{ If coefficient of static friction is } 0.2 \text{ then the maximum speed with which car can negotiate the turn safely : } ( g = 10 \text{ m/s}^2 , \sqrt{3} = 1.73 )$ 1 104 JEE MCQ NEW $51.4 \text{ m/s}$, $102.8 \text{ m/s}$... 1 Edit Delete
19214 $\text{A light string passing over a smooth light pulley connects two blocks of masses } m_1 \text{ and } m_2 \text{ (where } m_2 > m_1).$ $\text{If the acceleration of the system is } \frac{g}{\sqrt{2}}, \text{ then the ratio of the masses } \frac{m_1}{m_2} \text{ is:}$ 1 104 JEE MCQ NEW $\frac{\sqrt{3} + 1}{\sqrt{2} - 1}$, $\frac{1 + \sqrt{5}}{\sqrt{2} - 1}$... 4 Edit Delete
19213 $A \ 2 \ \text{kg} \ \text{brick} \ \text{begins} \ \text{to} \ \text{slide} \ \text{over} \ \text{a} \ \text{surface} \ \text{which} \ \text{is} \ \text{inclined} \ \text{at} \ \text{an} \ \text{angle} \ \text{of} \ 45^\circ \ \text{with} \ \text{respect} \ \text{to} \ \text{horizontal} \ \text{axis.}$ $\text{The} \ \text{co-efficient} \ \text{of} \ \text{static} \ \text{friction} \ \text{between} \ \text{their} \ \text{surfaces} \ \text{is} -$ 1 104 JEE MCQ NEW $1$, $0.5$... 1 Edit Delete
19212 $\text{A car with a mass of } 200 \text{ kg is moving along a circular track with a radius of } 70 \text{ m at an angular velocity of } 0.2 \text{ rad/s. What is the magnitude of the centripetal force acting on the car?}$ 1 104 JEE MCQ NEW $560 \text{ N}$, $400 \text{ N}$... 1 Edit Delete
19211 $\text{If a body of mass } 5 \text{ kg is in equilibrium due to forces } F_1, F_2 \text{ and } F_3. F_2 \text{ and } F_3 \text{ are perpendicular to each other. If } F_1 \text{ is removed then find the acceleration of body. Given: } F_2 = 6 \text{ N and } F_3 = 8 \text{ N}$ 1 104 JEE MCQ NEW $2 \ \text{m/s}^2$, $3 \ \text{m/s}^2$... 1 Edit Delete
19210 $\text{A machine gun is firing } 10 \text{ g bullets with a speed of } 250 \text{ m/s. To keep the machine gun in its position, } 125 \text{ N force is required. The number of bullets fired per second are:}$ 1 104 JEE MCQ NEW $40$, $50$... 2 Edit Delete
19209 $\text{A block of mass } m \text{ is connected to one end of a spring and kept on a smooth surface.}$ $\text{The other end of the spring is connected to a fixed shaft rotating with constant angular speed } \omega. \text{ Find tension in spring.}$ 1 104 JEE MCQ NEW $\frac{m \omega^2 r}{2}$, $2 m \omega^2 r$... 3 Edit Delete
19208 $\text{A body moving horizontally has an initial speed of } 20 \text{ m/s. Due to friction, the body stops after } 5 \text{ s. If the mass of the body is } 5 \text{ kg, the coefficient of friction is: (Take } g = 10 \text{ m/s}^2)$ 1 104 JEE MCQ NEW $0.1$, $0.2$... 4 Edit Delete
19207 $\text{A bullet of mass } 10 \text{ g is fired from a gun (mass of } 10 \text{ kg without a bullet) with a speed of } 100 \text{ m/s. The recoil speed of the gun is:}$ 1 104 JEE MCQ NEW $\frac{1}{10} \text{ m/s}$, $\frac{1}{5} \text{ m/s}$... 1 Edit Delete
19206 $\text{A tube of length 50 cm is filled completely with an incompressible liquid of mass 250 g and closed at both ends. The tube is then rotated in a horizontal plane about one of its ends with a uniform angular velocity } x \sqrt{F} \text{ rad s}^{-1}. \text{ If } F \text{ is the force exerted by the liquid at the other end then the value of } x \text{ will be:}$ 1 104 JEE MCQ NEW $2$, $3$... 3 Edit Delete
19205 $\text{If the momentum of a body is increased by 20\%, then its kinetic energy increases by:}$ 1 104 JEE MCQ NEW $36\%$, $40\%$... 3 Edit Delete
19204 $\text{Two bodies of masses } m_1 = 5 \text{ kg and } m_2 = 3 \text{ kg are connected by a light string going over a smooth light pulley on a smooth inclined plane as shown in the figure. The system is at rest. The force exerted by the inclined plane on the body of mass } m_1 \text{ will be:}$ $\text{[Take } g = 10 \text{ ms}^{-2}]$ 1 104 JEE MCQ NEW $30 \text{ N}$, $40 \text{ N}$... 2 Edit Delete
19203 $\text{A balloon has a mass of } 10 \text{ g in the air. The air escapes from the balloon at a uniform rate with a velocity of } 4.5 \text{ cm/s. If the balloon shrinks in } 5 \text{ s completely. Then, the average force acting on that balloon will be (in dyne).}$ 1 104 JEE MCQ NEW $3$, $9$... 2 Edit Delete
19202 $\text{A block of mass } M \text{ slides down on a rough inclined plane with constant velocity.}$ $\text{The angle made by the incline plane with horizontal is } \theta.$ $\text{The magnitude of the contact force will be:}$ 1 104 JEE MCQ NEW $Mg$, $Mg \cos \theta$... 1 Edit Delete
19201 $\text{A bag is gently dropped on a conveyor belt moving at a speed of } 2 \text{ m/s.}$ $\text{The coefficient of friction between the conveyor belt and bag is } 0.4.$ $\text{Initially, the bag slips on the belt before it stops due to friction.}$ $\text{The distance traveled by the bag on the belt during slipping motion is:}$ $[\text{Take } g = 10 \text{ m/s}^2]$ 1 104 JEE MCQ NEW $2 \text{ m}$, $0.5 \text{ m}$... 2 Edit Delete
19200 $\text{A ball of mass } 0.15 \text{ kg hits the wall with its initial speed of } 12 \text{ ms}^{-1}$ $\text{and bounces back without changing its initial speed.}$ $\text{If the force applied by the wall on the ball during the contact is } 100 \text{ N,}$ $\text{calculate the time duration of the contact of ball with the wall.}$ 1 104 JEE MCQ NEW $0.018 \text{ s}$, $0.036 \text{ s}$... 2 Edit Delete
19199 $\text{Three masses } M = 100 \text{ kg}, m_1 = 10 \text{ kg and } m_2 = 20 \text{ kg are arranged in a system as shown in figure.}$ $\text{All the surfaces are frictionless and strings are inextensible and weightless.}$ $\text{The pulleys are also weightless and frictionless.}$ $\text{A force } F \text{ is applied on the system so that the mass } m_2 \text{ moves upward with an acceleration of } 2 \text{ m/s}^2.$ $\text{The value of } F \text{ is: (Take } g = 10 \text{ m/s}^2)$ 1 104 JEE MCQ NEW $3360 \text{ N}$, $3380 \text{ N}$... 3 Edit Delete
19198 $\text{Two billiard balls of mass } 0.05 \text{ kg each moving in opposite directions with } 10 \text{ ms}^{-1} \text{ collide and rebound with same speed.}$ $\text{If the time duration of contact is } t = 0.005 \text{ s, then what is the force exerted on the ball due to each other?}$ 1 104 JEE MCQ NEW $100 \text{ N}$, $200 \text{ N}$... 2 Edit Delete
19197 $\text{A block of mass } M \text{ placed inside a box descends vertically with acceleration } 'a'.$ $\text{The block exerts a force equal to one-fourth of its weight on the floor of the box.}$ $\text{The value of } 'a' \text{ will be:}$ 1 104 JEE MCQ NEW $\frac{g}{4}$, $\frac{2g}{3}$... 3 Edit Delete
19196 $\text{A block of mass } 40 \text{ kg slides over a surface when a mass of } 4 \text{ kg is suspended through an inextensible massless string passing over a frictionless pulley as shown below. The coefficient of kinetic friction between the surface and block is } 0.02. \text{ The acceleration of the block is: (Given } g = 10 \text{ ms}^{-2})$ 1 104 JEE MCQ NEW $1 \text{ ms}^{-2}$, $\frac{1}{5} \text{ ms}^{-2}$... 4 Edit Delete
19195 $\text{A block of metal weighing } 2 \text{ kg is resting on a frictionless plane (as shown in the figure). It is struck by a jet releasing water at a rate of } 1 \text{ kg s}^{-1} \text{ and at a speed of } 10 \text{ m s}^{-1}. \text{ Then, the initial acceleration of the block, in m s}^{-2}, \text{ will be:}$ 1 104 JEE MCQ NEW $3$, $6$... 3 Edit Delete
19194 $\text{One end of a massless spring of spring constant } k \text{ and natural length } l_0 \text{ is fixed while the other end is connected to a small object of mass } m \text{ lying on a frictionless table. The spring remains horizontal on the table. If the object is made to rotate at an angular velocity } \omega \text{ about an axis passing through a fixed end, then the elongation of the spring will be:}$ 1 104 JEE MCQ NEW $\frac{k - m\omega^2 l_0}{m\omega^2}$, $\frac{m\omega^2 l_0}{k + m\omega^2}$... 3 Edit Delete
19193 $\text{A system of two blocks of masses } m = 2 \text{ kg and } M = 8 \text{ kg is placed on a smooth table as shown in the figure.}$ $\text{The coefficient of static friction between two blocks is } 0.5. \text{ The maximum horizontal force } F$ $\text{that can be applied to the block of mass } M \text{ so that the blocks move together will be:}$ 1 104 JEE MCQ NEW $9.8 \text{ N}$, $39.2 \text{ N}$... 3 Edit Delete
19192 $\text{A system of 10 balls each of mass 2 kg is connected via massless and stretchable string.}$ $\text{The system is allowed to slip over the edge of a smooth table as shown in the figure.}$ $\text{When 6}^{\text{th}} \text{ ball just leaves the table, the tension on the string between the 7}^{\text{th}} \text{ and 8}^{\text{th}} \text{ ball is:}$ 1 104 JEE MCQ NEW $24 \text{ N}$, $28 \text{ N}$... 4 Edit Delete
19191 $\text{A batsman hits back a ball of mass } 0.4 \text{ kg straight in the direction of the bowler without changing its initial speed of } 15 \text{ ms}^{-1}. \text{ The impulse imparted to the ball is:}$ 1 104 JEE MCQ NEW $10 \text{ Ns}$, $11 \text{ Ns}$... 3 Edit Delete
19190 $\text{A person is standing in an elevator. In which situation, he experiences weight loss?}$ 1 104 JEE MCQ NEW $\text{When the elevator moves upward with constant acceleration.}$, $\text{When the elevator moves downward with constant acceleration.}$... 2 Edit Delete
19189 $\text{A block of mass } 200 \text{ g is kept stationary on a smooth inclined plane by applying a minimum horizontal force } F = \sqrt{x} \text{ N as shown in the figure. The value of } x \text{ is:}$ 1 104 JEE MCQ NEW $5$, $10$... 4 Edit Delete
19188 $\text{A disc with a flat small bottom beaker placed on it at a distance } R \text{ from its centre is revolving about an axis passing through the centre and perpendicular to its plane with an angular velocity } \omega. \text{ The coefficient of static friction between the bottom of the beaker and the surface of the disc is } \mu. \text{ The beaker will revolve with the disc if:}$ 1 104 JEE MCQ NEW $R \leq \frac{\mu g}{2 \omega^2}$, $R \leq \frac{\mu g}{\omega^2}$... 2 Edit Delete
19187 $\text{A uniform chain of } 6 \text{ m in length is placed on a table such that a part of its length is hanging over the edge of the table. The system is at rest. The coefficient of static friction between the chain and the surface of the table is } 0.5. \text{ The maximum length of the chain hanging from the table is:}$ 1 104 JEE MCQ NEW $1 \text{ m}$, $2 \text{ m}$... 2 Edit Delete
19186 $\text{An object of mass 5 kg is thrown vertically upwards from the ground.}$ $\text{The air resistance produces a constant retarding force of 10 N}$ $\text{throughout the motion. The ratio of time of ascent to the descent will}$ $\text{be equal to: [Use } g = 10 \text{ ms}^{-2}]$ 1 104 JEE MCQ NEW $1 : 1$, $\sqrt{2} : \sqrt{3}$... 2 Edit Delete
19185 $\text{A stone of mass } m, \text{ tied to a string is being whirled in a vertical circle with a uniform speed. The tension in the string is:}$ 1 104 JEE MCQ NEW $\text{the same throughout the motion.}$, $\text{minimum at the highest position of the circular path.}$... 2 Edit Delete
19184 $\text{A boy ties a stone of mass } 100 \text{ g to the end of a } 2 \text{ m long string and whirls it around in a horizontal plane.}$ $\text{The string can withstand the maximum tension of } 80 \text{ N.}$ $\text{If the maximum speed with which the stone can revolve is } \frac{K}{\pi} \text{ rev./min.}$ $\text{The value of } K \text{ is: (Assume the string is massless and unstretchable)}$ 1 104 JEE MCQ NEW 400, 300... 3 Edit Delete
19183 $\text{A block of mass } 10 \text{ kg starts sliding on a surface with an initial velocity of } 9.8 \text{ ms}^{-1}. \text{ The coefficient of friction between the surface and block is } 0.5. \text{ The distance covered by the block before coming to rest is: [use } g = 9.8 \text{ ms}^{-2}]$ 1 104 JEE MCQ NEW $4.9 \text{ m}$, $9.8 \text{ m}$... 2 Edit Delete
19182 $\text{A block of mass } 10 \text{ kg is kept on a rough inclined plane as shown in the figure. A force of } 3 \text{ N is applied to the block. The coefficient of static friction between the plane and the block is } 0.6. \text{ What should be the minimum value of force } P, \text{ such that the block does not move downward?}$ $\text{(take } g = 10 \text{ ms}^{-2})$ 1 104 JEE MCQ NEW $32 \text{ N}$, $18 \text{ N}$... 1 Edit Delete
19181 $\text{A given object takes } n \text{ times more time to slide down a } 45^\circ \text{ rough}$ $\text{inclined plane as it takes to slide down a perfectly smooth } 45^\circ \text{ incline.}$ $\text{The coefficient of kinetic friction between the object and the incline is:}$ 1 104 JEE MCQ NEW $\sqrt{1 - \frac{1}{n^2}}$, $1 - \frac{1}{n^2}$... 2 Edit Delete
19180 $\text{A conical pendulum of length } 1 \text{ m makes an angle } \theta = 45^\circ \text{ with respect to the } z\text{-axis and moves in a circle in the } xy \text{ plane.}$ $\text{The radius of the circle is } 0.4 \text{ m and its center is vertically below } O. \text{ The speed of the pendulum, in its circular path, will be:}$ $\text{(Take } g = 10 \text{ ms}^{-2})$ 1 104 JEE MCQ NEW $0.4 \text{ m/s}$, $2 \text{ m/s}$... 2 Edit Delete
19179 $\text{A block of mass } m = 10 \text{ kg rests on a horizontal table. The coefficient of friction between the block and the table is } 0.05.$ $\text{When hit by a bullet of mass } 50 \text{ g moving with speed } v \text{ that gets embedded in it, the block moves and comes to rest after moving a distance of } 2 \text{ m on the table.}$ $\text{If a freely falling object were to acquire speed } 10v \text{ after being dropped from a height } H, \text{ then neglecting energy losses taking } g = 10 \text{ ms}^{-2}, \text{ the value of } H \text{ is close to:}$ 1 104 JEE MCQ NEW $0.02 \text{ km}$, $0.03 \text{ km}$... 4 Edit Delete
19178 $\text{If a body moving in a circular path maintains a constant speed of } 10 \text{ ms}^{-1}, \text{ then which of the following correctly describes the relation between acceleration and radius?}$ 1 104 JEE MCQ NEW $\begin{array}{c} a \\ \downarrow \end{array} \quad \begin{array}{c} \text{ } \\ \text{ } \end{array} \quad r \rightarrow$, $\begin{array}{c} a \\ \text{ } \end{array} \quad \begin{array}{c} \text{ } \\ \text{ } \end{array} \quad r \rightarrow$... 1 Edit Delete
19177 $\text{A ball released from a height } 10 \text{ m strikes the ground and rebounds at the height of } 5 \text{ m.}$ $\text{Then the impulse imparted by the ground while collision (given the mass of the ball is } 100 \text{ g) is:}$ $\text{(Take } g = 10 \text{ m/s}^2)$ 1 104 JEE MCQ NEW $(\sqrt{2} - 1) \text{ N-s}$, $(\sqrt{2} + 2) \text{ N-s}$... 4 Edit Delete
19176 $\text{The acceleration of the 2 kg block is shown in the diagram is:}$ $\text{(neglect friction)}$ 1 104 JEE MCQ NEW $\frac{4g}{15}$, $\frac{2g}{15}$... 1 Edit Delete
19175 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{The limiting force of static friction depends on the area of contact and is independent of the nature of the materials.}$ $\text{Statement II:}$ \text{The limiting force of kinetic friction is independent of the area of contact but depends on the nature of the materials.}$ 1 104 JEE MCQ NEW $\text{Statement I is correct and Statement II is incorrect.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 2 Edit Delete
19174 $\text{A train moves along a circular track of radius } R \text{ with speed } v. \text{ The track has a width } w \,(w \ll R). \text{ To ensure safe motion without relying on friction, the outer rail is elevated above the inner rail. What should be the required elevation of the outer track?}$ 1 104 JEE MCQ NEW $\frac{v^2 w}{R g}$, $\frac{v^2 w}{2 R g}$... 1 Edit Delete
19173 $\text{A particle is kept at rest at } 1 \text{ cm from axis on the disc rotating with angular velocity } \omega. \text{ If angular velocity is reduced to half of its initial value, then find the distance from axis, where particle again remains at rest}$ 1 104 JEE MCQ NEW $4 \text{ cm}$, $6 \text{ cm}$... 1 Edit Delete
19172 $\text{A block moving with speed } 1 \text{ m/s comes to rest after moving for } 20 \text{ cm over a rough surface. The coefficient of friction between the block and surface is:}$ 1 104 JEE MCQ NEW $0.25$, $0.33$... 1 Edit Delete
19171 $\text{A particle of mass } 500 \text{ g is moving with a velocity given by:}$ $\vec{v} = (2t\hat{i} + 3t^2\hat{j}) \text{ m/s.}$ $\text{If the force acting on the particle at } t = 1 \text{ s is } \vec{F} = (\hat{i} + x\hat{j}) \text{ N,}$ $\text{then the value of } x \text{ is:}$ 1 104 JEE MCQ NEW $6$, $1$... 4 Edit Delete
19170 $\text{A block of mass } 10 \text{ kg is subjected to a force } F, \text{ as shown in the figure.}$ $\text{If the coefficient of friction is } 0.25, \text{ what is the minimum value of } F \text{ required to make the block slide?}$ 1 104 JEE MCQ NEW $\frac{200}{4\sqrt{3} + 1} \text{ N}$, $\frac{200}{4\sqrt{3} - 1} \text{ N}$... 1 Edit Delete
19169 $\text{A force of } 30 \text{ N is applied on a block of mass } 5 \text{ kg. the block travels a distance of } 50 \text{ m in } 10 \text{ s starting from rest. The coefficient of friction is:}$ 1 104 JEE MCQ NEW $0.5$, $0.7$... 1 Edit Delete
19168 $\text{A ball of mass } 1 \text{ kg is hanging from } 1 \text{ m long inextensible string}$ $\text{which can withstand a maximum tension of } 400 \text{ N. The maximum}$ $\text{speed } u \text{ that should be given to the ball is:}$ $\text{(Take } g = 10 \text{ m/s}^2)$ 1 104 JEE MCQ NEW $\sqrt{390} \text{ m/s}$, $\sqrt{410} \text{ m/s}$... 1 Edit Delete
19167 $\text{A force } 200 \text{ N is exerted on a disc of mass } 70 \text{ kg as shown in the figure.}$ $\text{What is the normal reaction given by the ground on the disc?}$ 1 104 JEE MCQ NEW $200 \text{ N}$, $600 \text{ N}$... 3 Edit Delete
19166 $\text{A block remains in equilibrium as shown. If the mass, } m = \sqrt{3} \text{ kg,}$ $\text{what is the tension in the string?}$ 1 104 JEE MCQ NEW $\sqrt{3}g \text{ N}$, $3g \text{ N}$... 1 Edit Delete
19165 $\text{Momentum-time graph of an object moving along a straight line is as shown in the figure. If } (P_2 - P_1) < P_1 \text{ and } (t_2 - t_1) = t_1 < (t - 3 - t_2) \text{ then at which points among } A, B \text{ and } C, \text{ the magnitude of force experienced by the object is maximum and minimum respectively?}$ 1 104 JEE MCQ NEW $A, B$, $A, C$... 2 Edit Delete
19164 $\text{A ball of mass } 2 \text{ kg is dropped from a height of } 9.8 \text{ m and rebounds to a height of } 4.9 \text{ m.}$ $\text{If it remains in contact with the ground for } 0.2 \text{ s, the average force on the ball exerted by the ground is:}$ $\text{(Take } g = 9.8 \text{ m/s}^2)$ 1 104 JEE MCQ NEW $98(\sqrt{2} + 1) \text{ N}$, $49(\sqrt{2} + 1) \text{ N}$... 1 Edit Delete
19163 $\text{A car is moving on a circular track of radius } 50 \text{ cm with coefficient of friction being } 0.34. \text{ On this horizontal track, the maximum safe speed for turning is equal to:}$ $\text{(take } g = 10 \text{ m/s}^2 )$ 1 104 JEE MCQ NEW $1.03 \text{ m/s}$, $1.7 \text{ m/s}$... 3 Edit Delete
19162 $\text{A block is sliding down an inclined plane of inclination } 30^\circ, \text{ with an acceleration of } \frac{g}{4}. \text{ The coefficient of friction between the block and incline is:}$ 1 104 JEE MCQ NEW $\frac{1}{\sqrt{3}}$, $\frac{1}{2\sqrt{3}}$... 2 Edit Delete
19161 $\text{A block is placed on a rough inclined plane with } 45^\circ \text{ inclination. If}$ $\text{minimum force required to push the block up the incline is equal to 2}$ $\text{times the minimum force required to slide the block down the}$ $\text{inclined plane, then the value of the coefficient of friction between}$ $\text{block and incline is:}$ 1 104 JEE MCQ NEW 0.25, 1... 2 Edit Delete
19160 $\text{A car moving with a constant speed of } 2 \text{ m/s in a circle having a radius } R. \text{ A pendulum is suspended from the ceiling of the car. The angle made by the pendulum with vertical is:}$ $\text{(Take } R = \frac{8}{15} \text{ m and } g = 10 \text{ m/s}^2.)$ 1 104 JEE MCQ NEW $30^\circ$, $53^\circ$... 3 Edit Delete
19159 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{If the weight of the lift is equal to the tension force in the cable, then it moves with uniform velocity.}$ $\text{Reason (R):}$ \text{If the lift moves downward with an acceleration, the contact force between the boy's feet and the lift floor is more than the weight of the boy.}$ 1 104 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
19158 $\text{In the figure shown, two blocks of masses } m_1 = 4 \text{ kg and } m_2 = 1 \text{ kg are placed over a smooth fixed wedge, connected by an ideal string over a smooth pulley. As the system is released, the tension in the string will be:}$ 1 104 JEE MCQ NEW $4(\sqrt{3} + 1) \text{ N}$, $10\left(1 - \frac{1}{\sqrt{3}}\right) \text{ N}$... 1 Edit Delete
19157 $\text{A smooth circular groove has a smooth vertical wall as shown in the figure. A block of mass } m \text{ moves against the wall with a speed } v. \text{ Which of the following curve represents the correct relation between the normal reaction on the block by the wall } (N) \text{ and the speed of the block } (v)?$ 1 104 JEE MCQ NEW $N \text{ vs } v^2 \text{ (parabolic)}$, $N \text{ vs } v \text{ (linear)}$... 1 Edit Delete
19156 $\text{In two different experiments, an object of mass } 5 \text{ kg moving with a speed of } 25 \text{ ms}^{-1} \text{ hits two different walls and comes to rest within } (i) \ 3 \text{ s, and } (ii) \ 5 \text{ s, respectively.}$ $\text{Choose the correct option from the following:}$ 1 104 JEE MCQ NEW $\text{Impulse and average force acting on the object will be the same for both the cases.}$, $\text{Impulse will be the same for both the cases but the average force will be different.}$... 2 Edit Delete
19155 $\text{Two masses, } M_1 \text{ and } M_2, \text{ are connected by a light, inextensible string that passes over a frictionless pulley.}$ $\text{When the mass } M_2 \text{ is twice that of } M_1, \text{ the system experiences an acceleration } a_1.$ $\text{Similarly, when } M_2 \text{ is three times the mass of } M_1, \text{ the system's acceleration becomes } a_2.$ $\text{The ratio } \frac{a_1}{a_2} \text{ will be:}$ 1 104 JEE MCQ NEW $\frac{1}{3}$, $\frac{2}{3}$... 2 Edit Delete
19154 $\text{A monkey of mass } 50 \text{ kg climbs on a rope which can withstand the tension } (T) \text{ of } 350 \text{ N.}$ $\text{The monkey initially climbs down with an acceleration of } 4 \text{ m/s}^2 \text{ and then climbs up with an acceleration of } 5 \text{ m/s}^2.$ $\text{(take } g = 10 \text{ m/s}^2)$ $\text{Choose the correct option from the given ones:}$ 1 104 JEE MCQ NEW $T = 700 \text{ N while climbing upward.}$, $T = 350 \text{ N while going downward.}$... 3 Edit Delete
19153 $\text{Four forces act on a body as shown in the figure: } 5 \text{ N to the right, } 6 \text{ N to the left, } 7 \text{ N upward and } 8 \text{ N downward.}$ $\text{What additional force (magnitude and direction measured from the positive } x\text{-axis) must be applied so that the net acceleration of the body is zero?}$ 1 104 JEE MCQ NEW $\sqrt{2} \text{ N, } 45^\circ$, $\sqrt{2} \text{ N, } 135^\circ$... 1 Edit Delete
19152 $\text{Four forces are acting at a point } P \text{ in equilibrium as shown in the figure.}$ $\text{If the ratio of force } F_1 \text{ to } F_2 \text{ is } 1 : x, \text{ then the value of } x \text{ is:}$ 1 104 JEE MCQ NEW $4$, $3$... 2 Edit Delete
19151 $\text{A hanging mass } M \text{ is connected to four times bigger mass by using a string-pulley arrangement as shown in the figure.}$ $\text{The bigger mass is placed on a horizontal ice slab and pulled by } 2 \ Mg \text{ force.}$ $\text{In this situation, tension in the string is } \frac{x}{5} Mg \text{ for the value of } x:$ $\text{(Neglect the mass of the string and friction of the block (bigger mass) with ice slab.)}$ $\text{(Given } g = \text{ acceleration due to gravity)}$ 1 104 JEE MCQ NEW 6, 3... 1 Edit Delete
19150 $\text{In the arrangement shown in figure } a_1, a_2, a_3 \text{ and } a_4 \text{ are the accelerations of masses } m_1, m_2, m_3 \text{ and } m_4 \text{ respectively. Which of the following relation is true for this arrangement?}$ 1 104 JEE MCQ NEW $4a_1 + 2a_2 + a_3 + a_4 = 0$, $a_1 + 4a_2 + 3a_3 + a_4 = 0$... 1 Edit Delete
19149 $\text{A ball is released from rest from point } P \text{ of a smooth semi-spherical}$ $\text{vessel as shown in the figure. The ratio of the centripetal force and}$ $\text{the normal reaction on the ball at point } Q \text{ is } A \text{ while the angular}$ $\text{position of point } Q \text{ is } \alpha \text{ with respect to point } P. \text{ Which of the}$ $\text{following graphs represents the correct relation between } A \text{ and } \alpha$ $\text{ when the ball goes from point } Q \text{ to point } R?$ 1 104 JEE MCQ NEW $\begin{array}{c} A \\ \alpha \end{array}$, $\begin{array}{c} A \\ \alpha \end{array}$... 3 Edit Delete
19148 $\text{A curve in a level road has a radius of } 75 \text{ m. The maximum speed of a car turning this curved road can be } 30 \text{ m/s without skidding. If the radius of the curved road is changed to } 48 \text{ m and the coefficient of friction between the tyres and the road remains the same, then the maximum allowed speed would be:}$ 1 104 JEE MCQ NEW $12 \text{ m/s}$, $24 \text{ m/s}$... 2 Edit Delete
19147 $\text{As shown in the figure, a block of mass } \sqrt{3} \text{ kg is kept on a horizontal rough surface of coefficient of friction } \frac{1}{3\sqrt{3}}. \text{ The critical force to be applied on the vertical surface as shown at an angle } 60^\circ \text{ with horizontal such that it does not move, will be } 3x. \text{ The value of } x \text{ will be:}$ $\left( g = 10 \text{ m/s}^2; \sin 60^\circ = \frac{\sqrt{3}}{2}; \cos 60^\circ = \frac{1}{2} \right)$ 1 104 JEE MCQ NEW 1.23, 4.5... 3 Edit Delete
19146 $\text{A boy pushes a box of mass } 2 \text{ kg with a force } \vec{F} = (20\hat{i} + 10\hat{j}) \text{ N}$ $\text{on a frictionless surface. If the box was initially at rest, then the displacement along the } x\text{-axis after } 10 \text{ s is:}$ 1 104 JEE MCQ NEW $100 \text{ m}$, $300 \text{ m}$... 3 Edit Delete
19145 $\text{A person standing on a spring balance inside a stationary lift measures 60 kg. The weight of that person if the lift descends with the uniform downward acceleration of 1.8 m/s}^2 \text{ will be: } [g = 10 \text{ m/s}^2]$ 1 104 JEE MCQ NEW $321 \text{ N}$, $214 \text{ N}$... 4 Edit Delete
19144 $\text{A particle is projected with velocity } v_0 \text{ along } x\text{-axis.}$ $\text{A damping force is acting on the particle which is proportional to the square of the distance from the origin i.e, } ma = -\alpha x^2.$ $\text{The distance at which the particle stops:}$ 1 104 JEE MCQ NEW $\left( \frac{3mv_0^2}{2\alpha} \right)^{\frac{1}{2}}$, $\left( \frac{2mv_0}{3\alpha} \right)^{\frac{1}{3}}$... 4 Edit Delete
19143 $\text{An inclined plane is bent in such a way that the vertical cross-section is given by, } y = \frac{x^2}{4} \text{ where } y \text{ is in vertical and } x \text{ in the horizontal direction. If the upper surface of this curved plane is rough with a coefficient of friction } \mu = 0.5, \text{ the maximum height in(cm) at which a stationary block will not slip downward is:}$ 1 104 JEE MCQ NEW $25$, $50$... 1 Edit Delete
19142 $\text{The coefficient of static friction between a wooden block of mass } 0.5 \text{ kg and a vertical rough wall is } 0.2. \text{ The magnitude of horizontal force that should be applied on the block to keep it adhere to the wall will be:}$ $\text{(Take } g = 10 \text{ ms}^{-2})$ 1 104 JEE MCQ NEW $10 \text{ N}$, $25 \text{ N}$... 2 Edit Delete
19141 $\text{An insect is at the bottom of a hemispherical ditch of radius } 1 \text{ m.}$ $\text{It crawls up the ditch but starts slipping after it is at height } h \text{ from the bottom.}$ $\text{If the coefficient of friction between the ground and the insect is } 0.75, \text{ then } h \text{ is: } (g = 10 \text{ m/s}^2)$ 1 104 JEE MCQ NEW $0.20 \text{ m}$, $0.60 \text{ m}$... 1 Edit Delete
19140 $\text{A spaceship in space sweeps stationary interplanetary dust. As a result, its mass increases at a rate } \frac{dM(t)}{dt} = bv^2(t), \text{ where } v(t) \text{ is its instantaneous velocity. The instantaneous acceleration of the satellite is:}$ 1 104 JEE MCQ NEW $-\frac{2bv^3}{M(t)}$, $\frac{bv^3}{2M(t)}$... 4 Edit Delete
19139 $\text{A small ball of mass } m \text{ is thrown upward with velocity } u \text{ from the ground.}$ $\text{The ball experiences a resistive force } mkv^2 \text{ where } v \text{ is its speed.}$ $\text{The maximum height attained by the ball is:}$ 1 104 JEE MCQ NEW $\frac{1}{2k} \ln \left( 1 + \frac{ku^2}{g} \right)$, $\frac{1}{2k} \tan^{-1} \frac{ku^2}{g}$... 1 Edit Delete
19138 $\text{A block starts moving up an inclined plane of inclination } 30^\circ \text{ with an initial velocity of } v_0. \text{ It comes back to its initial position with velocity } \frac{v_0}{2}. \text{ The value of the coefficient of kinetic friction between the block and the inclined plane is close to } \frac{I}{1000}. \text{ The nearest integer to } I \text{ is:}$ 1 104 JEE MCQ NEW $210$, $346$... 2 Edit Delete
19137 $\text{A bead of mass } m \text{ stays at point } P (a,b) \text{ on a wire bent in the shape of a parabola } y = 4Cx^2 \text{ and rotating with angular speed } \omega \text{ (see figure). The value of } \omega \text{ is (neglect friction):}$ 1 104 JEE MCQ NEW $\sqrt{\frac{2gC}{ab}}$, $2\sqrt{2gC}$... 2 Edit Delete
19136 $\text{A block of mass } 5 \text{ kg is (i) pushed in case } (A) \text{ and (ii) pulled in case } (B), \text{ by a force } F = 20 \text{ N, making an angle of } 30^\circ \text{ with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is } \mu = 0.2. \text{ The difference between the accelerations of the blocks, in case } (B) \text{ and case } (A) \text{ will be: } (g = 10 \text{ ms}^{-2})$ 1 104 JEE MCQ NEW $3.2 \text{ ms}^{-2}$, $0.8 \text{ ms}^{-2}$... 2 Edit Delete
19135 $\text{A smooth wire of length } 2\pi r \text{ is bent into a circle and kept in a vertical plane.}$ $\text{A bead can slide smoothly on the wire.}$ $\text{When the circle is rotating with angular speed } \omega \text{ about the vertical diameter } AB,$ $\text{as shown in figure, the bead is at rest with respect to the circular ring at position } P \text{ as shown.}$ $\text{Then the value of } \omega^2 \text{ is equal to:}$ 1 104 JEE MCQ NEW $\frac{g\sqrt{3}}{r}$, $\frac{2g}{r}$... 4 Edit Delete
19134 $\text{A uniform rod of length } l \text{ is being rotated in a horizontal plane with a constant angular speed about an axis passing through one of its ends.}$ $\text{If the tension generated in the rod due to rotation is } T(x) \text{ at a distance } x \text{ from the axis, then which of the following graphs depicts it most closely?}$ 1 104 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 4 Edit Delete
19133 $\text{Two blocks } A \text{ and } B \text{ of masses } m_A = 1 \text{ kg and } m_B = 3 \text{ kg are kept on the table as shown in figure.}$ $\text{The coefficient of friction between } A \text{ and } B \text{ is } 0.2 \text{ and between } B \text{ and the surface of the table is also } 0.2.$ $\text{The maximum force } F \text{ that can be applied on } B \text{ horizontally, so that the block } A \text{ does not slide over the block } B \text{ is:}$ $[\text{Take } g = 10 \text{ m/s}^2]$ 1 104 JEE MCQ NEW $8 \text{ N}$, $40 \text{ N}$... 3 Edit Delete
19132 $\text{The mass of a hydrogen molecule is } 3.32 \times 10^{-27} \text{ kg. If } 10^{23} \text{ hydrogen molecules strike, per second, a fixed wall of area } 2 \text{ cm}^2 \text{ at an angle of } 45^\circ \text{ to the normal, and rebound elastically with a speed of } 10^3 \text{ m/s, then the pressure on the wall is nearly:}$ 1 104 JEE MCQ NEW $2.35 \times 10^3 \text{ N/m}^2$, $4.70 \times 10^3 \text{ N/m}^2$... 1 Edit Delete
19131 $\text{A particle is moving with a uniform speed in a circular orbit of radius } R \text{ in a central force inversely proportional to the } n^{\text{th}} \text{ power of } R. \text{ If the period of rotation of the particle is } T, \text{ then:}$ 1 104 JEE MCQ NEW $T \propto R^{3/2} \text{ for any } n$, $T \propto R^{n/2 + 1}$... 3 Edit Delete
19130 $\text{Two masses } m_1 = 5 \text{ kg and } m_2 = 10 \text{ kg, connected by an inextensible string over a frictionless pulley, are moving as shown in the figure.}$ $\text{The coefficient of friction of the horizontal surface is } 0.15.$ $\text{The minimum weight } m \text{ that should be put on top of } m_2 \text{ to stop the motion is:}$ 1 104 JEE MCQ NEW $18.3 \text{ kg}$, $23.3 \text{ kg}$... 2 Edit Delete
19129 $\text{Given in the figure are two blocks } A \text{ and } B \text{ of weight } 20 \text{ N and } 100 \text{ N, respectively. These are being pressed against a wall by a force } F \text{ as shown.}$ $\text{If the coefficient of friction between the blocks is } 0.1 \text{ and between block } B \text{ and the wall is } 0.15, \text{ the frictional force applied by the wall on block } B \text{ is:}$ 1 104 JEE MCQ NEW $100 \text{ N}$, $80 \text{ N}$... 3 Edit Delete
19128 $\text{A block of mass } m \text{ is placed on a surface with a vertical cross section given by } y = \frac{x^3}{6}. \text{ If the coefficient of friction is } 0.5, \text{ then the maximum height above the ground at which the block can be placed without slipping is:}$ 1 104 JEE MCQ NEW $\frac{2}{3} m$, $\frac{1}{3} m$... 4 Edit Delete
19127 $\text{A clock has } 75 \text{ cm, } 60 \text{ cm long second hand and minute hand respectively.}$ $\text{In } 30 \text{ minutes duration the tip of second hand will travel } x \text{ distance more than the tip of minute hand.}$ $\text{The value of } x \text{ in meter is nearly (Take } \pi = 3.14 ):$ 1 103 JEE MCQ NEW $118.9$, $220.0$... 3 Edit Delete
19126 $\text{A cyclist starts from the point P of a circular ground of radius 2 km}$ $\text{and travels along its circumference to the point S. The displacement}$ $\text{of a cyclist is –}$ 1 103 JEE MCQ NEW $4 \text{ km}$, $6 \text{ km}$... 3 Edit Delete
19125 $\text{Choose the correct statement regarding a ground-to-ground projectile:}$ 1 103 JEE MCQ NEW $\text{kinetic energy is zero at highest point.}$, $\text{potential energy is highest at highest point.}$... 2 Edit Delete
19124 $\text{Two balls are projected with equal speed } 40 \text{ m/s, one at an angle of } 30^\circ \text{ and the other at } 60^\circ \text{ with horizontal. The ratio of maximum heights of both balls is equal to:}$ 1 103 JEE MCQ NEW $1 : 4$, $3 : 1$... 3 Edit Delete
19123 $\text{A ball is projected with kinetic energy } E \text{ at an angle of } 60^\circ \text{ above the horizontal. What will be its kinetic energy at the highest point of its trajectory?}$ 1 103 JEE MCQ NEW $0$, $\frac{E}{2}$... 3 Edit Delete
19122 $\text{A body of mass 10 kg is projected at an angle of } 45^\circ \text{ with the horizontal.}$ $\text{The trajectory of the body is observed to pass through a point } (20, 10).$ $\text{If } T \text{ is the time of flight, then its momentum vector, at time } t = \frac{T}{\sqrt{2}}, \text{ is }$ $\underline{\phantom{answer}}$ $\text{[Take } g = 10 \text{ m/s}^2]$ 1 103 JEE MCQ NEW $100\hat{i} + (100\sqrt{2} - 200)\hat{j}$, $100\sqrt{2}\hat{i} + (100 - 200\sqrt{2})\hat{j}$... 4 Edit Delete
19121 $\text{Two projectiles are thrown with same initial velocity making an angle of } 45^\circ \text{ and } 30^\circ \text{ with the horizontal respectively. The ratio of their respective ranges will be}$ 1 103 JEE MCQ NEW $1 : \sqrt{2}$, $\sqrt{2} : 1$... 3 Edit Delete
19120 $\text{A ball is projected from the ground with a speed } 15 \text{ ms}^{-1} \text{ at an angle } \theta \text{ with horizontal so that its range and maximum height are equal, then } \tan \theta \text{ will be equal to:}$ 1 103 JEE MCQ NEW $\frac{1}{4}$, $\frac{1}{2}$... 4 Edit Delete
19119 $\text{The motion of a particle in the } xy\text{-plane is described by the following equations:}$ $x = 4 \sin\left(\frac{\pi}{2} - \omega t\right) \text{ m}, \quad y = 4 \sin(\omega t) \text{ m.}$ $\text{Which of the following best describes the path traced by the particle?}$ 1 103 JEE MCQ NEW $\text{circular}$, $\text{helical}$... 1 Edit Delete
19118 $\text{A projectile is launched at an angle } \alpha \text{ with the horizontal with a velocity of } 20 \text{ ms}^{-1}. \text{ After } 10 \text{ s, its inclination with horizontal is } \beta'.$ $\text{The value of } \tan \beta \text{ will be: } (g = 10 \text{ ms}^{-2})$ 1 103 JEE MCQ NEW $\tan \alpha + 5 \sec \alpha$, $\tan \alpha - 5 \sec \alpha$... 2 Edit Delete
19117 $\text{For a particle in a uniform circular motion, the acceleration } \vec{a} \text{ at any point } P(R, \theta) \text{ on the circular path of radius } R \text{ is: (when } \theta \text{ is measured from the positive x-axis and } v \text{ is uniform speed):}$ 1 103 JEE MCQ NEW $-\frac{v^2}{R} \sin \theta \hat{i} + \frac{v^2}{R} \cos \theta \hat{j}$, $-\frac{v^2}{R} \cos \theta \hat{i} + \frac{v^2}{R} \sin \theta \hat{j}$... 3 Edit Delete
19116 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{Two identical balls A and B thrown with the same velocity 'u' at two different angles with horizontal attained the same range R. If A and B reached the maximum height } h_1 \text{ and } h_2 \text{ respectively, then } R = 4\sqrt{h_1 h_2}$ $\text{Reason (R):}$ \text{Product of said heights, } h_1 h_2 = \left( \frac{u^2 \sin^2 \theta}{2g} \right) \cdot \left( \frac{u^2 \cos^2 \theta}{2g} \right)$ 1 103 JEE MCQ NEW $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19115 $\text{A projectile is launched with an initial speed of } 25 \text{ m/s at an angle } \theta \text{ above the horizontal.}$ $\text{After } t \text{ seconds, its velocity becomes horizontal.}$ $\text{If the horizontal range of the projectile is } R, \text{ then what is the expression for the launch angle } \theta \text{ in terms of } R \text{ and } t? \text{ (take } g = 10 \text{ m/s}^2)$ 1 103 JEE MCQ NEW $\frac{1}{2} \sin^{-1} \left( \frac{5t^2}{4R} \right)$, $\frac{1}{2} \sin^{-1} \left( \frac{4R}{5t^2} \right)$... 4 Edit Delete
19114 $\text{A particle is moving with a velocity } \vec{v} = K(y\hat{i} + x\hat{j}), \text{ where } K \text{ is a constant. The general equation for its path is:}$ 1 103 JEE MCQ NEW $y = x^2 + \text{constant}$, $y^2 = x + \text{constant}$... 3 Edit Delete
19113 $\text{The displacement of a particle changes with time as}$ $x = 6t^3 - 12t^2 + 20t + 30.$ $\text{The velocity of the particle when its acceleration becomes zero (} t \text{ is time in s) is:}$ 1 103 JEE MCQ NEW $12 \text{ m/s}$, $14 \text{ m/s}$... 1 Edit Delete
19112 $\text{A ball is thrown from point } O \text{ at the base of a staircase. Each step has dimensions of } (0.5 \text{ m} \times 0.5 \text{ m}) (\text{width} \times \text{height}). \text{ What is the minimum initial speed required for the ball to land directly on the } 5^{\text{th}} \text{ step using projectile motion?}$ 1 103 JEE MCQ NEW $5 \sqrt{(\sqrt{2} + 1)} \text{ m/s}$, $5 \sqrt{2} \text{ m/s}$... 1 Edit Delete
19111 $\text{Two particles are moving along the same circular path. If the ratio of their centripetal accelerations is } 3 : 4, \text{ then the ratio of their tangential velocities is:}$ 1 103 JEE MCQ NEW $2 : \sqrt{3}$, $\sqrt{3} : 2$... 2 Edit Delete
19110 $\text{A particle has an initial } (t = 0) \text{ velocity } \vec{u} = 5\hat{i} \text{ and is at its origin at this instant.}$ $\text{Its acceleration is given by } (3\hat{i} + 4\hat{j}).$ $\text{When the particle's } x \text{ co-ordinate is 16 units, then its speed is:}$ 1 103 JEE MCQ NEW $13 \text{ units}$, $\sqrt{161} \text{ units}$... 4 Edit Delete
19109 $\text{The position vector of a particle is expressed as:}$ $\vec{r}(t) = (8t\hat{i} + 5t^2\hat{j} + 6\hat{k}).$ $\text{Which of the following statements correctly describes the direction of the particle's acceleration?}$ 1 103 JEE MCQ NEW $\text{It is directed along the positive } y\text{-axis.}$, $\text{It is directed along the positive } x\text{-axis.}$... 1 Edit Delete
19108 $\text{A particle moving in a uniform circular motion of radius 1 m has velocity } 3\hat{j} \text{ m/s at point } B. \text{ What are the velocity } (\vec{v}) \text{ and acceleration } (\vec{a}) \text{ at diametrically opposite point } A?$ 1 103 JEE MCQ NEW $\vec{v}_A = 3\hat{j} \text{ m/s}; \; \vec{a}_A = -9\hat{i} \text{ m/s}^2$, $\vec{v}_A = -3\hat{j} \text{ m/s}; \; \vec{a}_A = 9\hat{i} \text{ m/s}^2$... 2 Edit Delete
19107 $\text{A particle is projected at an angle of } 30^\circ \text{ with the ground at a speed of } 40 \text{ m/s. The speed of the particle after two seconds is: (use } g = 10 \text{ m/s}^2)$ 1 103 JEE MCQ NEW $20\sqrt{2} \text{ m/s}$, $20\sqrt{3} \text{ m/s}$... 2 Edit Delete
19106 $\text{A particle is projected at an angle of } 30^\circ \text{ with the horizontal. It is observed that the particle reaches the same height at } 3 \text{ s and } 5 \text{ s after projection. The initial projection speed is:}$ $\left( \text{take } g = 10 \text{ m/s}^2 \right)$ 1 103 JEE MCQ NEW $40 \text{ m/s}$, $50 \text{ m/s}$... 3 Edit Delete
19105 $\text{Two projectiles, } A \text{ and } B \text{ are projected from the same point } (O) \text{ on the ground with the same initial speed, as shown in the figure.}$ $\text{The ratio of maximum height attained by the projectile } A \text{ to that attained by projectile } B \text{ is:}$ 1 103 JEE MCQ NEW $3 : 1$, $1 : 3$... 1 Edit Delete
19104 $\text{If a projectile is launched at an angle of } 15^\circ \text{ with the horizontal and achieves a range of } 50 \text{ m, what will be the range when it is launched at an angle of } 45^\circ \text{ with the horizontal?}$ 1 103 JEE MCQ NEW $50 \text{ m}$, $100 \text{ m}$... 2 Edit Delete
19103 $\text{A projectile is launched on a horizontal surface, following a trajectory}$ $\text{described by the equation: } y = x - \frac{x^2}{20}, \text{ where the } y\text{-axis is directed}$ $\text{vertically upward. The maximum height attained by the projectile is:}$ $\text{(all quantities are expressed in SI units)}$ 1 103 JEE MCQ NEW $10 \text{ m}$, $5 \text{ m}$... 2 Edit Delete
19102 $\text{Two particles } A \text{ and } B \text{ are projected with speeds } 40 \text{ m/s and } 60 \text{ m/s at angles } 30^\circ \text{ and } 60^\circ \text{ above the horizontal, respectively.}$ $\text{What is the ratio of the range of } A \text{ to the range of } B?$ 1 103 JEE MCQ NEW $\sqrt{2} : 3$, $\sqrt{3} : 2$... 3 Edit Delete
19101 $\text{Given below are two statements:}$ $\text{Assertion (A): The range of a horizontal projectile is maximum when}$ \text{the angle of projection is } \theta = 45^\circ.$ $\text{Reason (R): The range is maximum when } \sin(2\theta) = 1.$ 1 103 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
19100 $\text{A ball is thrown horizontally from height of 10 m with a speed of 5 m/s as shown.}$ $\text{What would be the speed with which it strikes the ground?}$ $\text{(Take } g = 10 \text{ m/s}^2)$ 1 103 JEE MCQ NEW $15 \text{ m/s}$, $5 \text{ m/s}$... 1 Edit Delete
19099 $\text{A particle is in a uniform circular motion with a time period of } 4 \text{ s and radius } \sqrt{2} \text{ m.}$ $\text{What is the magnitude of displacement in } 3 \text{ s?}$ 1 103 JEE MCQ NEW $4 \text{ m}$, $3 \text{ m}$... 3 Edit Delete
19098 $\text{A swimmer swims perpendicular to river flow and reaches point } B. \text{ If the velocity of the swimmer in still water is } 4 \text{ km/hr, the velocity of the river flow is:}$ 1 103 JEE MCQ NEW $3 \text{ km/hr}$, $5 \text{ km/hr}$... 1 Edit Delete
19097 $\text{A projectile is launched from a horizontal surface with an initial velocity } u. \text{ At its maximum height, the velocity of the projectile is } \frac{\sqrt{3}u}{2}. \text{ The time of flight of the projectile is:}$ 1 103 JEE MCQ NEW $\frac{\sqrt{3}u}{g}$, $\frac{2u}{g}$... 3 Edit Delete
19096 $\text{Two projectiles are thrown at an angle of projection } \alpha \text{ and } \beta \text{ with the horizontal. If } \alpha + \beta = 90^\circ, \text{ then the ratio of the range of two projectiles on the horizontal plane is equal to:}$ $1.\ 1 : 1$ $2.\ 2 : 1$ $3.\ 1 : 2$ $4.\ 1 : 3$ 1 103 JEE MCQ NEW $1 : 1$, $2 : 1$... 1 Edit Delete
19095 $\text{If a ball is thrown from the ground in a vertical plane and reaches a maximum height of } 360 \text{ m, the maximum horizontal distance it can cover on level ground using the same launch speed is:}$ 1 103 JEE MCQ NEW $360 \text{ m}$, $720 \text{ m}$... 2 Edit Delete
19094 $\text{An object is projected in the air with initial velocity } u \text{ at an angle } \theta. \text{ The projectile motion is such that the horizontal range } R, \text{ is maximum. Another object is projected in the air with a horizontal range half of the range of the first object. The initial velocity remains the same in both cases. The value of the angle of projection, at which the second object is projected, will be:}$ 1 103 JEE MCQ NEW $45^\circ$, $30^\circ$... 4 Edit Delete
19093 $\text{Two inclined planes are placed as shown in the figure. A block is projected from the point } A \text{ of the inclined plane } AB \text{ along its surface with a velocity just sufficient to carry it to the top point } B \text{ at a height of } 10 \text{ m. After reaching the point } B \text{ the block slides down on the inclined plane } BC. \text{ The time it takes to reach the point } C \text{ from the point } A \text{ is } t(\sqrt{2} + 1) \text{ s. The value of } t \text{ is: (take } g = 10 \text{ m/s}^2)$ 1 103 JEE MCQ NEW $1$, $2$... 2 Edit Delete
19092 $\text{Two projectiles thrown at } 30^\circ \text{ and } 45^\circ \text{ with the horizontal respectively, reach the maximum height in same time. The ratio of their initial velocities is:}$ 1 103 JEE MCQ NEW $1 : \sqrt{2}$, $2 : 1$... 3 Edit Delete
19091 $\text{A person moves from point } A \text{ to point } B \text{ along a circular arc that}$ $\text{subtends an angle of } 135^\circ \text{ at the centre } O, \text{ as shown in the figure.}$ $\text{The length of the arc } AB \text{ is } 60 \text{ m. If } \cos 135^\circ = -0.7, \text{ the}$ $\text{magnitude of the displacement of the person is:}$ 1 103 JEE MCQ NEW $42 \text{ m}$, $47 \text{ m}$... 2 Edit Delete
19090 $\text{A person can throw a ball up to a maximum range of } 100 \text{ m.}$ $\text{How high above the ground can he throw the same ball?}$ 1 103 JEE MCQ NEW $25 \text{ m}$, $50 \text{ m}$... 2 Edit Delete
19089 $\text{A girl standing on the road holds her umbrella at } 45^\circ \text{ with the vertical to keep the rain away. If she starts running without an umbrella with a speed of } 15\sqrt{2} \text{ km/h, the raindrops hit her head vertically. The speed of raindrops with respect to the moving girl is:}$ 1 103 JEE MCQ NEW $30 \text{ km/h}$, $\frac{25}{\sqrt{2}} \text{ km/h}$... 3 Edit Delete
19088 $\text{The trajectory of a projectile in a vertical plane is } y = \alpha x - \beta x^2, \text{ where } \alpha \text{ and } \beta \text{ are constants and } x \text{ and } y \text{ are respectively the horizontal and vertical distances of the projectile from the point of projection. The angle of projection } \theta \text{ and the maximum height attained } H \text{ are respectively given by:}$ 1 103 JEE MCQ NEW $\tan^{-1} \alpha, \frac{\alpha^2}{4\beta}$, $\tan^{-1} \beta, \frac{\alpha^2}{2\beta}$... 1 Edit Delete
19087 $\text{A particle moves at a constant speed along the circumference of a circle with a radius } R, \text{ subject to a central fictitious force } F \text{ that is inversely proportional to } R^3. \text{ Its time period of revolution will be given by:}$ 1 103 JEE MCQ NEW $T \propto R^2$, $T \propto R^{\frac{3}{2}}$... 1 Edit Delete
19086 $\text{When a car is at rest, its driver sees rain drops falling on it vertically.}$ $\text{When driving the car with speed } v, \text{ he sees that rain drops are coming}$ $\text{at an angle } 60^\circ \text{ from the horizontal. On further increasing the speed}$ $\text{of the car to } (1 + \beta)v, \text{ this angle changes to } 45^\circ. \text{ The value of } \beta \text{ is}$ $\text{close to:}$ 1 103 JEE MCQ NEW 0.41, 0.50... 4 Edit Delete
19085 $\text{A clock has a continuously moving second's hand of } 0.1 \text{ m length.}$ $\text{The average acceleration of the tip of the second hand (in units of } \text{ms}^{-2}) \text{ is of the order of:}$ 1 103 JEE MCQ NEW $10^{-3}$, $10^{-4}$... 1 Edit Delete
19084 $\text{A helicopter rises from rest on the ground vertically upwards with a constant acceleration } g. \text{ A food packet is dropped from the helicopter when it is a height } h. \text{ The time taken by the packet to reach the ground is close to } [g \text{ is the acceleration due to gravity}]:$ 1 103 JEE MCQ NEW $t = \sqrt{\frac{2h}{3g}}$, $t = 1.8 \sqrt{\frac{h}{g}}$... 3 Edit Delete
19083 $\text{A particle starts from the origin at time } t = 0 \text{ with an initial velocity of } 5\hat{j} \text{ ms}^{-1}. \text{ It moves in the } XY\text{-plane under a constant acceleration of } (10\hat{i} + 4\hat{j}) \text{ ms}^{-2}. \text{ At some later time } t, \text{ the coordinates of the particle are } (20 \text{ m}, y_0 \text{ m}). \text{ The values of } t \text{ and } y_0 \text{ are, respectively:}$ $1. \ 4 \text{ s and } 52 \text{ m}$ $2. \ 5 \text{ s and } 25 \text{ m}$ $3. \ 2 \text{ s and } 18 \text{ m}$ $4. \ 2 \text{ s and } 24 \text{ m}$ 1 103 JEE MCQ NEW $4 \text{ s and } 52 \text{ m}$, $5 \text{ s and } 25 \text{ m}$... 3 Edit Delete
19082 $\text{Two particles are projected from the same point with the same speed } u, \text{ but at different angles.}$ $\text{They both cover the same horizontal range } R, \text{ but reach different maximum heights, } h_1 \text{ and } h_2.$ $\text{Which of the following relations is correct?}$ 1 103 JEE MCQ NEW $R^2 = h_1 h_2$, $R^2 = 16 h_1 h_2$... 2 Edit Delete
19081 $\text{The trajectory of a projectile near the surface of the earth is given as}$ $y = 2x - 9x^2.$ $\text{If it were launched at an angle } \theta_0 \text{ with speed } v_0 \text{ then:}$ $(g = 10 \text{ ms}^{-2})$ 1 103 JEE MCQ NEW $\theta_0 = \cos^{-1}\left(\frac{1}{\sqrt{5}}\right) \text{ and } v_0 = \frac{5}{3} \text{ ms}^{-1}$, $\theta_0 = \cos^{-1}\left(\frac{2}{\sqrt{5}}\right) \text{ and } v_0 = \frac{3}{5} \text{ ms}^{-1}$... 1 Edit Delete
19080 $\text{A shell is fired from a fixed artillery gun with an initial speed } u \text{ such that it hits the target on the ground at a distance } R \text{ from it. If } t_1 \text{ and } t_2 \text{ are the values of the time taken by it to hit the target in two possible ways, the product } t_1 t_2 \text{ is:}$ 1 103 JEE MCQ NEW $\frac{2R}{g}$, $\frac{R}{2g}$... 1 Edit Delete
19079 $\text{A particle is projected with a speed of } 2 \text{ m/s from the base of a plane inclined at } 30^\circ \text{ to the horizontal.}$ $\text{The direction of projection makes an angle of } 15^\circ \text{ above the inclined plane as shown in the figure.}$ $\text{If } g = 10 \text{ m/s}^2, \text{ what is the distance along the plane from the point of projection to the point where the particle strikes the plane?}$ 1 103 JEE MCQ NEW $14 \text{ cm}$, $28 \text{ cm}$... 3 Edit Delete
19078 $\text{The position vector of a particle changes with time according to the relation,}$ $\vec{r}(t) = (15t^2)\hat{i} + (4 - 20t^2)\hat{j}, \text{ where } \vec{r}(t) \text{ is in metres and } t \text{ is in seconds.}$ $\text{What is the magnitude of the acceleration at } t = 1 \text{ second?}$ 1 103 JEE MCQ NEW $100 \text{ m/s}^2$, $40 \text{ m/s}^2$... 3 Edit Delete
19077 $\text{The stream of a river is flowing with a speed of } 2 \text{ km/h.}$ $\text{A swimmer can swim at a speed of } 4 \text{ km/h.}$ $\text{What should be the direction of the swimmer with respect to the flow of the river to cross the river straight?}$ 1 103 JEE MCQ NEW $60^\circ$, $90^\circ$... 4 Edit Delete
19076 $\text{Ship } A \text{ is sailing towards north-east with velocity } \vec{v} = 30\hat{i} + 50\hat{j} + 50\hat{k} \text{ km/hr where } \hat{i} \text{ and } \hat{j} \text{ north.}$ $\text{Ship } B \text{ is at a distance of } 80 \text{ km east and } 150 \text{ km north of Ship } A \text{ and is sailing towards west at } 10 \text{ km/hr.}$ $A \text{ will be at minimum distance from } B \text{ in:}$ 1 103 JEE MCQ NEW $4.2 \text{ hrs}$, $2.2 \text{ hrs}$... 3 Edit Delete
19075 $\text{The machine as shown has 2 rods of length 1 m connected by a pivot at the top.}$ $\text{The end of one rod is connected to the floor by a stationary pivot and the end of the other rod has a roller that rolls along the floor in a slot.}$ $\text{As the roller goes back and forth, a 2 kg weight moves up and down.}$ $\text{If the roller is moving towards the right at a constant speed, the weight moves up with a:}$ 1 103 JEE MCQ NEW $\text{speed which is } \frac{3}{4} \text{th of that of the roller when the weight is } 0.4 \text{ m above the ground}$, $\text{constant speed}$... 3 Edit Delete
19074 $\text{Two cars are travelling towards each other at speed of } 20 \text{ ms}^{-1} \text{ each.}$ $\text{When the cars are } 300 \text{ m apart, both the drivers apply brakes and the cars retard at the rate of } 2 \text{ ms}^{-2}. \text{ The distance between them when they come to rest is:}$ 1 102 JEE MCQ NEW $200 \text{ m}$, $50 \text{ m}$... 3 Edit Delete
19073 $\text{A particle moving in a straight line covers half the distance with speed } 6 \text{ m/s.}$ $\text{The other half is covered in two equal time intervals with speeds } 9 \text{ m/s and } 15 \text{ m/s respectively.}$ $\text{The average speed of the particle during the motion is:}$ 1 102 JEE MCQ NEW $8.8 \text{ m/s}$, $8 \text{ m/s}$... 2 Edit Delete
19072 $\text{A body projected vertically upwards with a certain speed from the top of tower reaches the ground in } t_1. \text{ If it is projected vertically downwards from the same point with the same speed, it reaches the ground in } t_2. \text{ Time required to reach the ground, if it is dropped from the top of the tower is:}$ 1 102 JEE MCQ NEW $\sqrt{t_1 + t_2}$, $\sqrt{t_1 - t_2}$... 3 Edit Delete
19071 $\text{A train starting from rest first accelerates uniformly up to a speed of } 80 \text{ km/h for time } t, \text{ then it moves with a constant speed for time } 3t. \text{ The average speed of the train for this duration of the journey will be (in km/h):}$ 1 102 JEE MCQ NEW $30$, $80$... 4 Edit Delete
19070 $\text{A particle is thrown vertically upward with initial velocity of } 150 \text{ m/s.}$ $\text{Find the ratio of its speed at } t = 3 \text{ seconds and } t = 5 \text{ seconds.}$ $\text{(take } g = 10 \text{ m/s}^2)$ 1 102 JEE MCQ NEW 2:1, 1:1... 3 Edit Delete
19069 $\text{An object begins to move along the positive } x\text{-direction with an initial speed of } 10 \text{ m/s and a constant acceleration of } 2 \text{ m/s}^2. \text{ How much time will it take to reach a speed of } 60 \text{ m/s?}$ 1 102 JEE MCQ NEW $25 \text{ s}$, $20 \text{ s}$... 1 Edit Delete
19068 $\text{A train (moving with initial speed } = 20 \text{ m/s) applies brakes to stop at the incoming station which is } 500 \text{ m ahead. If brakes are applied after moving } 250 \text{ m, then how much beyond the station train would stop?}$ 1 102 JEE MCQ NEW $125 \text{ m}$, $500 \text{ m}$... 3 Edit Delete
19067 $\text{A car travels } 4 \text{ km distance with a speed of } 3 \text{ km/hr and next } 4 \text{ km with a speed of } 5 \text{ km/hr. What is the average speed of the car?}$ 1 102 JEE MCQ NEW $\frac{15}{2} \text{ km/hr}$, $\frac{15}{4} \text{ km/hr}$... 2 Edit Delete
19066 $\text{A ball is released from a height } h. \text{ If } t_1 \text{ and } t_2 \text{ be the time required to complete the first half and second half of the distance respectively.}$ $\text{Then, the correct relation between } t_1 \text{ and } t_2 \text{ is:}$ 1 102 JEE MCQ NEW $t_1 = (\sqrt{2})t_2$, $t_1 = (\sqrt{2} - 1)t_2$... 4 Edit Delete
19065 $\text{A ball is thrown up vertically with a certain velocity so that, it reaches a maximum height } h. \text{ The ratio of the times in which it is at height } \frac{h}{3} \text{ while going up and coming down respectively is:}$ 1 102 JEE MCQ NEW $\frac{\sqrt{2} - 1}{\sqrt{2} + 1}$, $\frac{\sqrt{3} - \sqrt{2}}{\sqrt{3} + \sqrt{2}}$... 2 Edit Delete
19064 $\text{An NCC parade is going on at a uniform speed of } 9 \text{ km/h under a mango tree on which a monkey is sitting at a height of } 19.6 \text{ m.}$ $\text{At any particular instant, the monkey drops a mango. A cadet will receive the mango whose distance from the tree at the time of drop is:}$ $\text{(Given } g = 9.8 \text{ m/s}^2)$ 1 102 JEE MCQ NEW $5 \text{ m}$, $10 \text{ m}$... 1 Edit Delete
19063 $\text{A block } A \text{ takes } 2 \text{ s to slide down a frictionless incline of } 30^\circ \text{ and length } l, \text{ kept inside a lift going up with uniform velocity } v. \text{ If the incline is changed to } 45^\circ, \text{ the time taken by the block, to slide down the incline, will be approximately:}$ 1 102 JEE MCQ NEW $2.66 \text{ s}$, $0.83 \text{ s}$... 3 Edit Delete
19062 $\text{A small toy starts from rest and moves with a constant acceleration.}$ $\text{It travels } 10 \text{ m in the first } t \text{ seconds. How far will it travel in the next } t \text{ seconds?}$ 1 102 JEE MCQ NEW $10 \text{ m}$, $20 \text{ m}$... 3 Edit Delete
19061 $\text{Two balls A and B are placed at the top of a 180 m tall tower. Ball A is released from the top at } t = 0 \text{ s. Ball B is thrown vertically down with an initial velocity 'u' at } t = 2 \text{ s.}$ $\text{After a certain time, both balls meet 100 m above the ground.}$ $\text{The value of 'u' in ms}^{-1} \text{ is: [use } g = 10 \text{ ms}^{-2}] :$ 1 102 JEE MCQ NEW $10$, $15$... 4 Edit Delete
19060 $\text{When a ball is dropped into a lake from a height } 4.9 \text{ m above the water level, it hits the water with a velocity } v \text{ and then sinks to the bottom with the constant velocity } v. \text{ It reaches the bottom of the lake } 4.0 \text{ s after it is dropped. The approximate depth of the lake is:}$ 1 102 JEE MCQ NEW $19.6 \text{ m}$, $29.4 \text{ m}$... 2 Edit Delete
19059 $\text{From the top of a tower, a ball is thrown vertically upward which reaches the ground in 6 s.}$ $\text{A second ball thrown vertically downward from the same position with the same speed reaches the ground in 1.5 s.}$ $\text{A third ball released, from the rest from the same location, will reach the ground in:}$ 1 102 JEE MCQ NEW $1$, $2$... 3 Edit Delete
19058 $\text{The velocity-time graphs of a car and a scooter are shown in the figure.}$ $\text{(i) The difference between the distance travelled by the car and the scooter in } 15 \text{ s and,}$ $\text{(ii) the time at which the car will catch up with the scooter respectively are:}$ 1 102 JEE MCQ NEW $112.5 \text{ m and } 22.5 \text{ s}$, $337.5 \text{ m and } 25 \text{ s}$... 1 Edit Delete
19057 $\text{A car is standing } 200 \text{ m behind a bus, which is also at rest. The two start moving at the same instant but with different forward accelerations. The bus has acceleration } 2 \text{ m/s}^2 \text{ and the car has acceleration } 4 \text{ m/s}^2. \text{ The car will catch up with the bus after a time of:}$ 1 102 JEE MCQ NEW $\sqrt{120} \text{ s}$, $15 \text{ s}$... 3 Edit Delete
19056 $\text{Which graph corresponds to an object moving with a constant negative acceleration and a positive velocity?}$ 1 102 JEE MCQ NEW $\text{Graph 1: Velocity vs. Time (decreasing)}$, $\text{Graph 2: Velocity vs. Distance (decreasing)}$... 2 Edit Delete
19055 $\text{If a particle starting from rest having constant acceleration covers the distance } S_1 \text{ in first } (p - 1) \text{ seconds and } S_2 \text{ in the first } p \text{ seconds, then find the time for which displacement is } S_1 + S_2.$ 1 102 JEE MCQ NEW $\sqrt{2p^2 + 1} - 2p$, $\sqrt{2p^2 + 1} + 2p$... 1 Edit Delete
19054 $\text{An object is dropped from rest at point } P. \text{ It crosses two points } A \text{ and } B \text{ in a time interval of } 2 \text{ s, where the distance } AB = 80 \text{ m. If } g = 10 \text{ m/s}^2, \text{ then what is the distance } AP \text{ in metres?}$ 1 102 JEE MCQ NEW $70$, $45$... 2 Edit Delete
19053 $\text{A bullet is fired into a fixed target. It loses } \frac{1}{3} \text{ rd of its velocity after travelling } 4 \text{ cm. It penetrates further } p \times 10^{-3} \text{ m before coming to rest. Find } p.$ 1 102 JEE MCQ NEW 35, 30... 4 Edit Delete
19052 $\text{A particle is moving along a straight line, and its displacement at time } t \text{ seconds is given by:}$ $S = (2t^2 + 5) \text{ (in metres)}$ $\text{What is the velocity of the particle at } t = 1 \text{ s?}$ 1 102 JEE MCQ NEW $4 \text{ m/s}$, $2 \text{ m/s}$... 1 Edit Delete
19051 $\text{If position of particle is changing with time as } r = t^2 - 2t \text{ (m). Find the velocity at } t = 2 \text{ second}$ 1 102 JEE MCQ NEW $2 \text{ m/s}$, $3 \text{ m/s}$... 1 Edit Delete
19050 $\text{The position } x \text{ of a particle moving along the } x\text{-axis varies with time } t \text{ according to the equation: } x = 2.5t^2. \text{ What is the speed of the particle at } t = 5 \text{ s?}$ 1 102 JEE MCQ NEW $5 \text{ m/s}$, $10 \text{ m/s}$... 3 Edit Delete
19049 $\text{Two identical trains cross each other moving on parallel tracks, opposite in direction. Speed of one of the train is } 70 \text{ km/hr and second train has a speed of } 110 \text{ km/hr. If it takes } 8 \text{ seconds for two trains to cross each other then length of trains is equal to}$ 1 102 JEE MCQ NEW $100 \text{ m}$, $200 \text{ m}$... 2 Edit Delete
19048 $\text{Velocity of particle moving along a straight line is shown in figure.}$ $\text{The distance and displacement travelled by the body is}$ 1 102 JEE MCQ NEW $150 \text{ m and } 250 \text{ m}$, $250 \text{ m and } 250 \text{ m}$... 1 Edit Delete
19047 $\text{An object travels a distance } x \text{ with a constant speed } v_1, \text{ and then covers another equal distance } x \text{ with a different constant speed } v_2. \text{ The average velocity } v \text{ for the entire journey is given by:}$ 1 102 JEE MCQ NEW $v = \frac{(v_1 + v_2)}{2}$, $\frac{1}{v} = \frac{1}{v_1} + \frac{1}{v_2}$... 3 Edit Delete
19046 $\text{The graph shows the position-time } (x-t) \text{ relation for two students, } A \text{ and } B \text{ from school to their home.}$ $\text{Choose the correct entries:}$ 1 102 JEE MCQ NEW (a), (d), (b), (c)... 2 Edit Delete
19045 $\text{Given below are two statements:}$ $\text{Statement I: We can get displacement from the acceleration-time graph.}$ $\text{Statement II: We can get acceleration from the velocity-time graph.}$ 1 102 JEE MCQ NEW $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 4 Edit Delete
19044 $\text{A particle moves from } A \text{ to } B \text{ via } C \text{ with uniform speed of } \pi \text{ m/s.}$ $\text{The average velocity during the journey is:}$ 1 102 JEE MCQ NEW $\sqrt{3} \text{ m/s}$, $\frac{\sqrt{3}}{2} \text{ m/s}$... 3 Edit Delete
19043 $\text{A stone is thrown vertically up with speed } v_0 \text{ from a cliff of height } H. \text{ What would be the average speed of the ball till the moment it reaches ground?}$ $\text{(Given, } H = 100 \text{ m, } v_0 = 10 \text{ m/s, } g = 10 \text{ m/s}^2.)$ 1 102 JEE MCQ NEW $\frac{64}{1+\sqrt{21}} \text{ m/s}$, $55 \text{ m/s}$... 4 Edit Delete
19042 $\text{The position-time graph for a particle is parabolic (as shown in the figure).}$ $\text{Choose the corresponding } (v-t) \text{ graph.}$ 1 102 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
19041 $\text{What will be the velocity of the particle if the position of the particle is given by;} \; x = 2t^2 \; \text{at} \; t = 2 \; \text{s?}$ 1 102 JEE MCQ NEW $8 \; \text{m/s}$, $4 \; \text{m/s}$... 1 Edit Delete
19040 $\text{A car moving on a straight-line travels in same direction half of the}$ $\text{distance with uniform velocity } v_1 \text{ and other half of the distance with}$ $\text{uniform velocity } v_2 . \text{ The average velocity of the car is equal to:}$ 1 102 JEE MCQ NEW $\frac{2v_1v_2}{v_1+v_2}$, $\frac{v_1+v_2}{2}$... 1 Edit Delete
19039 $\text{A juggler throws balls vertically upward with the same initial speed.}$ $\text{He throws } n \text{ balls per second. If he throws the next ball just as the}$ $\text{previous one reaches its maximum height, what is the maximum}$ $\text{height which each ball will reach?}$ 1 102 JEE MCQ NEW $\frac{g}{2n}$, $\frac{g}{n}$... 4 Edit Delete
19038 $\text{A bullet is shot vertically downwards with an initial velocity of } 100 \text{ m/s from a certain height.}$ $\text{Within } 10 \text{ s, the bullet reaches the ground and instantaneously comes to rest due to a perfectly inelastic collision.}$ $\text{The velocity-time curve for total time } t = 20 \text{ s is: (take } g = 10 \text{ m/s}^2)$ 1 102 JEE MCQ NEW $\text{Graph with initial velocity } -100 \text{ m/s, decreasing to } -200 \text{ m/s at } 10 \text{ s, then } 0 \text{ m/s till } 20 \text{ s}$, $\text{Graph with initial velocity } +100 \text{ m/s, constant till } 20 \text{ s}$... 1 Edit Delete
19037 $\text{A particle is moving in a straight line such that its velocity is increasing at } 5 \text{ ms}^{-1} \text{ per meter.}$ $\text{The acceleration of the particle at a point where its velocity is } 20 \text{ ms}^{-1}, \text{ is:}$ 1 102 JEE MCQ NEW $100 \text{ ms}^{-2}$, $200 \text{ ms}^{-2}$... 1 Edit Delete
19036 $\text{A car is moving with speed of } 150 \text{ km/h and after applying the brake, it will move } 27 \text{ m before it stops.}$ $\text{If the same car is moving with a speed of one-third the reported speed, then it will stop after travelling a distance of:}$ $1. \ 4 \text{ m}$ $2. \ 3 \text{ m}$ $3. \ 2 \text{ m}$ $4. \ 1 \text{ m}$ 1 102 JEE MCQ NEW $4 \text{ m}$, $3 \text{ m}$... 2 Edit Delete
19035 $\text{A car travels a distance } AB \text{ in three equal segments: the first third at a velocity of } v_1 \text{ m/s, the second third at } v_2 \text{ m/s, and the final third at } v_3 \text{ m/s.}$ $\text{Given that } v_3 = 3v_1, \ v_2 = 2v_1 \text{ and } v_1 = 11 \text{ m/s, the average velocity of the car is:}$ 1 102 JEE MCQ NEW $12 \text{ m/s}$, $18 \text{ m/s}$... 2 Edit Delete
19034 $\text{Two buses } P \text{ and } Q \text{ start from a point at the same time and move in a straight line.}$ $\text{Their positions are represented by } X_p(t) = \alpha t + \beta t^2$ $\text{and } X_Q(t) = ft - t^2. \text{ At what time do both the buses have the same velocity?}$ 1 102 JEE MCQ NEW $\frac{\alpha - f}{1 + \beta}$, $\frac{\alpha + f}{2(\beta - 1)}$... 4 Edit Delete
19033 $\text{A scooter accelerates from rest for time } t_1 \text{ at constant rate } a_1 \text{ and then retards at constant rate } a_2 \text{ for time } t_2 \text{ and comes to rest. The correct value of } \frac{t_1}{t_2} \text{ will be:}$ 1 102 JEE MCQ NEW $\frac{a_1 + a_2}{a_2}$, $\frac{a_2}{a_1}$... 2 Edit Delete
19032 $\text{A stone is dropped from the top of a building. When it crosses a point } 5 \text{ m below the top, another stone starts to fall from a point } 25 \text{ m below the top.}$ $\text{Both stones reach the bottom of the building simultaneously. The height of the building is:}$ $1.\ 35 \text{ m}$ $2.\ 45 \text{ m}$ $3.\ 50 \text{ m}$ $4.\ 25 \text{ m}$ 1 102 JEE MCQ NEW $35 \text{ m}$, $45 \text{ m}$... 2 Edit Delete
19031 $\text{An engine of a train moving with uniform acceleration passes the signal post with velocity } u \text{ and the last compartment passes the same post with velocity } v. \text{ The velocity with which the middle point of the train passes the signal post is:}$ 1 102 JEE MCQ NEW $\sqrt{\frac{v^2 + u^2}{2}}$, $\frac{v-u}{2}$... 1 Edit Delete
19030 $\text{If the velocity-time graph has the shape } AMB, \text{ what would be the shape of the corresponding acceleration-time graph?}$ 1 102 JEE MCQ NEW $\begin{array}{c} \vec{a} \\ \text{(graph 1)} \end{array}$, $\begin{array}{c} \vec{a} \\ \text{(graph 2)} \end{array}$... 2 Edit Delete
19029 $\text{The velocity } (v) \text{ and time } (t) \text{ graph of a body in a straight-line motion is shown in the figure.}$ $\text{The point } S \text{ occurs at } 4.333 \text{ seconds.}$ $\text{The total distance covered by the body in } 6 \text{ s is:}$ 1 102 JEE MCQ NEW $12 \text{ m}$, $\frac{49}{12} \text{ m}$... 4 Edit Delete
19028 $\text{A tennis ball is released from a height } h \text{ and after freely falling on a wooden floor it rebounds and reaches height } \frac{h}{2}. \text{ The velocity versus height of the ball during its motion may be represented graphically by: (graph are drawn schematically and on not to scale)}$ 1 102 JEE MCQ NEW $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
19027 $\text{Train A and Train B are running on parallel tracks in opposite directions with speeds of } 36 \text{ km/h and } 72 \text{ km/h, respectively. A person is walking inside Train A in the direction opposite to the train's motion with a speed of } 1.8 \text{ km/h. What is the speed of this person as observed from Train B? (Assume the distance between the tracks is negligible.)}$ 1 102 JEE MCQ NEW $30.5 \text{ m/s}$, $29.5 \text{ m/s}$... 2 Edit Delete
19026 $\text{A particle is moving with speed } v = b\sqrt{x} \text{ along the positive } x\text{-axis.}$ $\text{The speed of the particle at time } t = T \text{ is: (assume that the particle is at origin at } t = 0)$ 1 102 JEE MCQ NEW $\frac{b^2 T}{\sqrt{2}}$, $b^2 T$... 3 Edit Delete
19025 $\text{A ball is thrown upward with an initial velocity } v_0 \text{ from the surface of the earth.}$ $\text{The motion of the ball is affected by a drag force equal to } myv^2 \text{ (where } m \text{ is mass of the ball, } v \text{ is its instantaneous velocity and } y \text{ is a constant).}$ $\text{The time taken by the ball to rise to its zenith (maximum height) is:}$ 1 102 JEE MCQ NEW $\frac{1}{\sqrt{yg}} \tan^{-1}\left(\sqrt{\frac{y}{g}} v_0\right)$, $\frac{1}{\sqrt{2yg}} \tan^{-1}\left(\sqrt{\frac{2y}{g}} v_0\right)$... 1 Edit Delete
19024 $\text{The position of a particle as a function of time } t, \text{ is given by:}$ $x(t) = at + bt^2 - ct^3$ $\text{where } a, b \text{ and } c \text{ are constants. When the particle attains zero acceleration, then its velocity will be:}$ 1 102 JEE MCQ NEW $a + \frac{b^2}{4c}$, $a + \frac{b^2}{c}$... 3 Edit Delete
19023 $\text{A ball is thrown vertically up (taken as } +z\text{-axis) from the ground. The correct momentum-height (} p-h \text{) diagram is:}$ 1 102 JEE MCQ NEW $\text{Option 1 diagram}$, $\text{Option 2 diagram}$... 4 Edit Delete
19022 $\text{A particle starts from origin } O \text{ from rest and moves with a uniform acceleration along the positive } x\text{-axis. Identify all figures that correctly represent the motion qualitatively.}$ $(a = \text{acceleration}, \ v = \text{velocity}, \ x = \text{displacement}, \ t = \text{time})$ 1 102 JEE MCQ NEW $(A) \text{ only}$, $(A), \ (B) \text{ and } (D) \text{ only}$... 2 Edit Delete
19021 $\text{An automobile moving at a speed of } 40 \text{ km/hr can be brought to rest by applying brakes over a distance of } 40 \text{ m.}$ $\text{If the automobile were instead moving at } 80 \text{ km/h, what would be its minimum stopping distance (assuming the braking force remains the same and no skidding occurs)?}$ 1 102 JEE MCQ NEW $150 \text{ m}$, $100 \text{ m}$... 4 Edit Delete
19020 $\text{The four graphs below are intended to represent the same motion.}$ $\text{However, one of them is incorrect. Identify the graph that does not}$ $\text{accurately depict the motion.}$ 1 102 JEE MCQ NEW $\text{Velocity vs. Position}$, $\text{Distance vs. Time}$... 2 Edit Delete
19019 $\text{A body is projected vertically upward and then allowed to fall back down under gravity. Which of the following velocity-time } (v-t) \text{ graphs correctly represents its motion throughout the ascent and descent?}$ 1 102 JEE MCQ NEW $\text{Graph 1:}$ $v$ $t$, $\text{Graph 2:}$ $v$ $t$... 3 Edit Delete
19018 $\text{Two stones are thrown simultaneously from the edge of a cliff 240 m high.}$ $\text{The first stone is thrown upward with an initial speed of 10 m/s, and the second with 40 m/s.}$ $\text{Assuming the stones do not bounce after hitting the ground and neglecting air resistance } (g = 10 \text{ m/s}^2),$ $\text{which of the following graphs best represents how the position of the second stone varies relative to the first stone with time?}$ $\text{(graphs are schematic and not drawn to scale)}$ 1 102 JEE MCQ NEW $(y_2 - y_1) \text{ m}$ $t \text{ (s)}$, $(y_2 - y_1) \text{ m}$ $t \text{ (s)}$... 3 Edit Delete
19017 $\text{From a tower of height } H, \text{ a particle is thrown vertically upwards with a speed } u. \text{ The time taken by the particle, to hit the ground, is } n \text{ times that taken by it to reach the highest point of its path. The relation between } H, u \text{ and } n \text{ is:}$ 1 102 JEE MCQ NEW $gH = (n - 2)^2 u^2$, $2gH = nu^2(n - 2)$... 2 Edit Delete
19016 111 N/A N/A N/A N/A N/A Edit Delete
19015 $\text{The de Broglie wavelength associated with a particle of mass m and energy E is } h/\sqrt{2mE}. \text{ The dimensional formula for Planck's constant is:}$ 1 101 JEE MCQ NEW $[M^2L^2T^{-2}]$, $[MLT^{-2}]$... 3 Edit Delete
19014 $\text{One main scale division of a vernier caliper is equal to } m \text{ units.}$ $\text{If } n\text{th division of main scale coincides with } (n+1)\text{th division of vernier scale,}$ $\text{the least count of the vernier caliper is:}$ 1 101 JEE MCQ NEW $\frac{1}{(n+1)}$, $\frac{n}{(n+1)}$... 4 Edit Delete
19013 $\text{The dimensional formula of latent heat is:}$ 1 101 JEE MCQ NEW $[MLT^{-2}]$, $[ML^2T^{-2}]$... 4 Edit Delete
19012 $\text{The diameter of a sphere is measured using a vernier caliper whose }$ $9 \text{ divisions of main scale are equal to } 10 \text{ divisions of vernier scale.}$ $\text{The shortest division on the main scale is equal to } 1 \text{ mm.}$ $\text{The main scale reading is } 2 \text{ cm and second division of vernier scale}$ $\text{coincides with a division on main scale.}$ $\text{If mass of the sphere is } 8.635 \text{ g, the density of the sphere is:}$ 1 101 JEE MCQ NEW $2.5 \text{ g/cm}^3$, $1.7 \text{ g/cm}^3$... 3 Edit Delete
19011 $\text{Young's modulus is determined by the equation given by}$ $Y = 49000 \frac{m}{l} \frac{\text{dyne}}{\text{cm}^2}$ $\text{where M is the mass and I is the extension of wire used in the experiment.}$ $\text{Now error in Young modules (Y) is estimated by taking data from M I plot in graph paper.}$ $\text{The smallest scale divisions are 5 g and 0.02 cm along load axis and extension axis respectively.}$ $\text{If the value of M and I are 500 g and 2 cm respectively then percentage error of Y is:}$ 1 101 JEE MCQ NEW $0.2\%$, $0.02\%$... 3 Edit Delete
19010 $\text{In an expression } a \times 10^b:$ $1.\ a \text{ is order of magnitude for } b \leq 5$ $2.\ b \text{ is order of magnitude for } 5 < a \leq 10$ $3.\ b \text{ is order of magnitude for } a \geq 5$ $4.\ b \text{ is order of magnitude for } a \leq 5$ 1 101 JEE MCQ NEW $a \text{ is order of magnitude for } b \leq 5$, $b \text{ is order of magnitude for } 5 < a \leq 10$... 4 Edit Delete
19009 $\text{Given below are two statements:}$ $\text{Statements (I): Dimensions of specific heat is } [L^2T^{-2}K^{-1}]$ $\text{Statements (II): Dimensions of gas constant is } [ML^2T^{-1}K^{-1}]$ $\text{In the light of the above statements choose the most appropriate}$ $\text{answer from the options given below:}$ 1 101 JEE MCQ NEW $\text{Both statement (I) and statement (II) are correct}$, $\text{Statement (I) is incorrect but statement (II) is correct}$... 3 Edit Delete
19008 $\text{In finding out refractive index of glass slab the following observations were made through travelling microscope } 50 \text{ vernier scale division} = 49 \text{ MSD} ; 20 \text{ divisions on main scale in each cm}$ $\text{For mark on paper: } MSR = 8.45 \text{ cm}, VC = 26$ $\text{For mark on paper seen through slab: } MSR = 7.12 \text{ cm}, VC = 41$ $\text{For powder particle on the top surface of the glass slab: } MSR = 4.05 \text{ cm}, VC = 1$ $(MSR = \text{Main Scale Reading}, VC = \text{Vernier Coincidence})$ $\text{Refractive index of the glass slab is:}$ 1 101 JEE MCQ NEW 1.24, 1.35... 3 Edit Delete
19007 $\text{In a Vernier caliper, when both jaws touch each other, zero or the Vernier scale shifts towards left and its 4th division coincides exactly with a certain division on main scale. If 50 Vernier scale divisions equal to 49 main scale divisions and zero error in the instrument is 0.04 mm then how many main scale divisions are there in 1 cm?}$ 1 101 JEE MCQ NEW $5$, $20$... 2 Edit Delete
19006 $\text{To find the spring constant (k) of a spring experimentally, a student commits } 2\% \text{ positive error in the measurement of time and } 1\% \text{ negative error in the measurement of mass. The percentage error in determining the value of } k \text{ is:}$ 1 101 JEE MCQ NEW $3\%$, $4\%$... 1 Edit Delete
19005 $\text{While measuring the diameter of a wire using a screw gauge, the following readings were noted. The main scale reading is } 1 \text{ mm, and the circular scale reading is equal to } 42 \text{ divisions. The pitch of the screw gauge is } 1 \text{ mm, and it has } 100 \text{ divisions on the circular scale. The diameter of the wire is } \frac{x}{50} \text{ mm. The value of } x \text{ is:}$ 1 101 JEE MCQ NEW $142$, $21$... 4 Edit Delete
19004 $\text{Match List I with List II}$ $\text{LIST-I}$ \quad \text{LIST-II}$ $\text{A. Torque} \quad \text{I. } \left[ M^1 L^1 T^{-2} A^{-2} \right]$ $\text{B. Magnetic field} \quad \text{II. } \left[ L^2 A^1 \right]$ $\text{C. Magnetic moment} \quad \text{III. } \left[ M^1 T^{-2} A^{-1} \right]$ $\text{D. Permeability of free space} \quad \text{IV. } \left[ M^1 L^2 T^{-2} \right]$ $\text{Choose the correct answer from the options given below:}$ 1 101 JEE MCQ NEW $\text{A-III, B-I, C-II, D-IV}$, $\text{A-IV, B-II, C-III, D-I}$... 3 Edit Delete
19003 $\text{Voltage and resistance for a resistor are measured as } V = 200 \pm 5 \text{ volts and } R = 20 \pm 0.2 \, \Omega. \text{ The percentage error in current } I = \frac{V}{R} \text{ is } x. \text{ Then the value of } 10x \text{ is:}$ $1. \ 45$ $2. \ 35$ $3. \ 30$ $4. \ 60$ 1 101 JEE MCQ NEW $45$, $35$... 2 Edit Delete
19002 $\text{Statement I: Positive zero error is added in measurement.}$ $\text{Statement II: Defects may occur during the manufacturing of measuring instruments}$ 1 101 JEE MCQ NEW $\text{Statement I is correct and Statement II is incorrect.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 2 Edit Delete
19001 $\left( P - \frac{a}{V^2} \right) (V - b) = nRT$, \text{ where } P, V, R \text{ and } T \text{ are pressure, volume, universal gas constant, and temperature, then } \frac{a}{b^2} \text{ has the same dimensional formula as that of:}$ $1. \ R$ $2. \ PV$ $3. \ RT$ $4. \ P$ 1 101 JEE MCQ NEW $R$, $PV$... 4 Edit Delete
19000 $\text{A spherometer is used to measure:}$ 1 101 JEE MCQ NEW $\text{the radius of curvature of a lens}$, $\text{length of rod}$... 1 Edit Delete
18999 $\text{Consider the following Assertion and Reason:}$ $\text{Assertion (A):}$ $\text{If radius of ball (5} \pm 0.1\text{) mm, then error in terminal velocity is 4\%.}$ $\text{Reason (R):}$ $\text{Terminal velocity is directly proportional to radius (r).}$ 1 101 JEE MCQ NEW $\text{Both A and R are correct and R is the correct explanation of A.}$, $\text{Both A and R are correct but R is not the correct explanation of A.}$... 3 Edit Delete
18998 $\text{If the height of the tower used for L.O.S is increased by } 21\% \text{ then the percentage change in range is:}$ 1 101 JEE MCQ NEW $10\%$, $21\%$... 1 Edit Delete
18997 $\text{Statement-I: Light year, parsec and AU are units for measuring distance.}$ $\text{Statement-II: (1 light year) > (1 parsec) > 1 AU}$ 1 101 JEE MCQ NEW $\text{Both statements I and II are correct}$, $\text{Statement I is correct, statement II is incorrect}$... 2 Edit Delete
18996 $\text{Mark the option correctly matching the following columns with appropriate dimensions.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{(A) Surface Tension} & \text{(P)} \ [ML^{-1}T^{-2}] \\ \text{(B) Pressure} & \text{(Q)} \ [MT^{-2}] \\ \text{(C) Viscosity} & \text{(R)} \ [MLT^{-1}] \\ \text{(D) Impulse} & \text{(S)} \ [ML^{-1}T^{-1}] \\ \hline \end{array}$ 1 101 JEE MCQ NEW $\text{A - Q, B - P, C - R, D - S}$, $\text{A - Q, B - P, C - S, D - R}$... 2 Edit Delete
18995 $\text{Match List-I with List-II.}$ $\text{List-I}$ \quad \text{List-II}$ $\text{A. Torque} \quad \text{I. N} \cdot \text{m s}^{-1}$ $\text{B. Stress} \quad \text{II. J} \cdot \text{kg}^{-1}$ $\text{C. Latent Heat} \quad \text{III. N} \cdot \text{m}$ $\text{D. Power} \quad \text{IV. N} \cdot \text{m}^{-2}$ $\text{Choose the correct answer from the options given below:}$ 1 101 JEE MCQ NEW $\text{A-III, B-II, C-I, D-IV}$, $\text{A-III, B-IV, C-II, D-I}$... 2 Edit Delete
18994 $\text{A travelling microscope has 20 divisions per cm on the main scale while its Vernier scale has total 50 divisions and 25 Vernier scale divisions are equal to 24 main scale divisions, what is the least count of the travelling microscope?}$ 1 101 JEE MCQ NEW $0.001 \text{ cm}$, $0.002 \text{ mm}$... 3 Edit Delete
18993 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{The time period of oscillation of a liquid drop depends on surface tension } (S) \text{ if the density of the liquid is } \rho \text{ and the radius of the drop is } r, \text{ then } T = k \sqrt{\frac{\rho r^3}{S^{3/2}}} \text{ is dimensionally correct, where } k \text{ is dimensionless.}$ $\text{Reason (R):}$ \text{Using dimensional analysis, we get RHS having different dimensions than that of the time period.}$ 1 101 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
18992 $\text{The dimensions of } \left( \frac{B^2}{\mu_0} \right) \text{ will be:}$ $\text{(if } \mu_0 : \text{ permeability of free space and B: magnetic field)}$ 1 101 JEE MCQ NEW $[ML^2T^{-2}]$, $[MLT^{-2}]$... 3 Edit Delete
18991 $\text{An expression of energy density is given by } u = \frac{\alpha}{\beta} \sin \left( \frac{\alpha x}{kt} \right), \text{ where } \alpha, \beta \text{ are constants, } x \text{ is displacement, } k \text{ is Boltzmann constant and } t \text{ is the temperature. The dimensions of } \beta \text{ will be:}$ 1 101 JEE MCQ NEW $[M L^2 T^{-2} \theta^{-1}]$, $[M^0 L^2 T^{-2}]$... 4 Edit Delete
18990 $\text{The one division of the main scale of vernier callipers reads 1 mm and 10 divisions of the Vernier scale are equal to the 9 divisions on the main scale.}$ $\text{When the two jaws of the instrument touch each other the zero of the Vernier lies to the right of zero of the main scale and its fourth division coincides with a main scale division.}$ $\text{When a spherical bob is tightly placed between the two jaws, the zero of the Vernier scale lies between 4.1 cm and 4.2 cm and 6}^{\text{th}} \text{ Vernier division coincides with a main scale division.}$ $\text{The diameter of the bob will be:}$ 1 101 JEE MCQ NEW $1.24 \times 10^{-2} \text{ cm}$, $2.40 \times 10^{-2} \text{ cm}$... 4 Edit Delete
18989 $\text{A screw gauge of pitch } 0.5 \text{ mm is used to measure the diameter of uniform wire of length } 6.8 \text{ cm, the main scale reading is } 1.5 \text{ mm and circular scale reading is } 7. \text{ The calculated curved surface area of wire to the appropriate significant figures is:}$ $[\text{Screw gauge has } 50 \text{ divisions on the circular scale}]$ 1 101 JEE MCQ NEW $6.8 \text{ cm}^2$, $3.4 \text{ cm}^2$... 2 Edit Delete
18988 $\text{The maximum error in the measurement of resistance, current and time for which current flows in an electrical circuit are } 1\% , 2\% \text{ and } 3\% \text{ respectively. The maximum percentage error in the detection of the dissipated heat will be:}$ 1 101 JEE MCQ NEW $2$, $4$... 4 Edit Delete
18987 $\text{Which of the following physical quantities have the same dimensions?}$ $1. \text{Electric displacement } (\vec{D}) \text{ and surface charge density}$ $2. \text{Displacement current and electric field}$ $3. \text{Current density and surface charge density}$ $4. \text{Electric potential and energy}$ 1 101 JEE MCQ NEW $\text{Electric displacement } (\vec{D}) \text{ and surface charge density}$, $\text{Displacement current and electric field}$... 1 Edit Delete
18986 $\text{If momentum } [P], \text{ area } [A] \text{ and time } [T] \text{ are taken as fundamental quantities, then the dimensional formula for coefficient of viscosity is:}$ 1 101 JEE MCQ NEW $[PA^{-1}T^0]$, $[PAT^{-1}]$... 1 Edit Delete
18985 $\text{The Vernier constant of Vernier callipers is } 0.1 \text{ mm and it has zero error of } (-0.05) \text{ cm.}$ $\text{While measuring the diameter of a sphere, the main scale reading is } 1.7 \text{ cm and the coinciding Vernier division is } 5.$ $\text{The corrected diameter will be:}$ 1 101 JEE MCQ NEW $1.75 \times 10^{-2} \text{ cm}$, $1.80 \times 10^{-2} \text{ cm}$... 2 Edit Delete
18984 $\text{In Vander Wall's equation } \left[ P + \frac{a}{V^2} \right] \left[ V - b \right] = RT; \ P \text{ is pressure, } V \text{ is volume, } R \text{ is universal gas constant and } T \text{ is temperature. The ratio of constants } \frac{a}{b} \text{ is dimensionally equal to:}$ 1 101 JEE MCQ NEW $\frac{P}{V}$, $\frac{V}{P}$... 3 Edit Delete
18983 $\text{If } L, C \text{ and } R \text{ are the self-inductance, capacitance, and resistance respectively, which of the following does not have the dimension of time?}$ 1 101 JEE MCQ NEW $RC$, $\frac{L}{R}$... 4 Edit Delete
18982 $\text{The SI unit of a physical quantity is pascal-second.}$ $\text{The dimensional formula of this quantity will be:}$ 1 101 JEE MCQ NEW $[\text{ML}^{-1}\text{T}^{-1}]$, $[\text{ML}^{-1}\text{T}^{-2}]$... 1 Edit Delete
18981 $\text{A silver wire has a mass } (0.6 \pm 0.006) \text{ g, radius } (0.5 \pm 0.005) \text{ mm}$ $\text{and length } (4 \pm 0.04) \text{ cm. The maximum percentage error in the}$ $\text{measurement of its density will be:}$ 1 101 JEE MCQ NEW $4\%$, $3\%$... 1 Edit Delete
18980 $\text{A travelling microscope is used to determine the refractive index of a glass slab. If } 40 \text{ divisions are there in } 1 \text{ cm on the main scale and } 50 \text{ Vernier scale divisions are equal to } 49 \text{ main scale divisions, then the least count of the travelling microscope is:}$ 1 101 JEE MCQ NEW $3 \times 10^{-6} \text{ m}$, $4 \times 10^{-6} \text{ m}$... 3 Edit Delete
18979 $\text{The dimension of mutual inductance is:}$ 1 101 JEE MCQ NEW $[\text{ML}^2\text{T}^{-2}\text{A}^{-1}]$, $[\text{ML}^2\text{T}^{-3}\text{A}^{-1}]$... 3 Edit Delete
18978 $\text{An expression for a dimensionless quantity } P \text{ is given by}$ $P = \frac{\alpha}{\beta} \log_e \left( \frac{kt}{\beta x} \right);$ $\text{where } \alpha \text{ and } \beta \text{ are constants, } x \text{ is distance; } k \text{ is Boltzmann constant and } t \text{ is the temperature.}$ $\text{Then the dimension of } \alpha \text{ will be:}$ 1 101 JEE MCQ NEW $[M^0 L^{-1} T^0]$, $[ML^0 T^{-2}]$... 3 Edit Delete
18977 $\text{If } Z = \frac{A^2B^3}{C^4}, \text{ then the relative error in } Z \text{ will be:}$ 1 101 JEE MCQ NEW $\frac{\Delta A}{A} + \frac{\Delta B}{B} + \frac{\Delta C}{C}$, $\frac{2\Delta A}{A} + \frac{3\Delta B}{B} + \frac{4\Delta C}{C}$... 3 Edit Delete
18976 $\text{Identify the pair of physical quantities that have the same dimensions.}$ 1 101 JEE MCQ NEW $\text{Velocity gradient and decay constant}$, $\text{Wien's constant and Stefan's constant}$... 1 Edit Delete
18975 $\text{The pair of physical quantities which have different dimensions are:}$ $1. \text{Wave number and Rydberg's constant}$ $2. \text{Stress and Coefficient of elasticity}$ $3. \text{Coercivity and Magnetisation}$ $4. \text{Specific heat capacity and Latent heat}$ 1 101 JEE MCQ NEW $\text{Wave number and Rydberg's constant}$, $\text{Stress and Coefficient of elasticity}$... 4 Edit Delete
18974 $\text{A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four readings } 5.50 \text{ mm}, 5.55 \text{ mm}, 5.45 \text{ mm}, 5.65 \text{ mm}. \text{ The average of these four readings is } 5.5375 \text{ mm} \text{ and the standard deviation of the data is } 0.07395 \text{ mm}. \text{ The average diameter of the pencil should therefore be recorded as:}$ 1 101 JEE MCQ NEW $(5.5375 \pm 0.0739) \text{ mm}$, $(5.538 \pm 0.074) \text{ mm}$... 3 Edit Delete
18973 $\text{A physical quantity } z \text{ depends on four observables } a, b, c \text{ and } d, \text{ as}$ $z = \frac{a^2 b^{\frac{3}{2}}}{\sqrt{cd^3}}$ $\text{The percentage of error in the measurement of } a, b, c \text{ and } d \text{ is } 2\%, 1.5\%, 4\% \text{ and } 2.5\% \text{ respectively. The percentage of error in } z \text{ is:}$ 1 101 JEE MCQ NEW 12.25\%, 14.5\%... 2 Edit Delete
18972 $\text{The dimensional formula for thermal conductivity is: (here } K \text{ denotes the temperature)}$ $1. \ [MLT^{-2}K]$ $2. \ [MLT^{-3}K]$ $3. \ [MLT^{-3}K^{-1}]$ $4. \ [MLT^{-2}K^{-2}]$ 1 101 JEE MCQ NEW $[MLT^{-2}K]$, $[MLT^{-3}K]$... 3 Edit Delete
18971 $\text{The amount of solar energy received on the earth's surface per unit area per unit time is defined as a solar constant. Dimension of solar constant is:}$ 1 101 JEE MCQ NEW $[ML^2T^{-2}]$, $[M^2L^0T^{-1}]$... 4 Edit Delete
18970 $\text{Using a screw gauge with pitch } 0.1 \text{ cm and } 50 \text{ divisions on its circular scale, the thickness of an object is measured. It should be accurately recorded as:}$ $1.\ 2.124\ \text{cm}$ $2.\ 2.121\ \text{cm}$ $3.\ 2.125\ \text{cm}$ $4.\ 2.123\ \text{cm}$ 1 101 JEE MCQ NEW $2.124\ \text{cm}$, $2.121\ \text{cm}$... 1 Edit Delete
18969 $\text{A copper wire is stretched to make it } 0.5\% \text{ longer. The percentage change in its electric resistance, if its volume remains unchanged, is:}$ 1 101 JEE MCQ NEW $2.0\%$, $2.5\%$... 3 Edit Delete
18968 $\text{Which of the following combinations has the dimension of electrical resistance (}$ \varepsilon_0 \text{ is the permittivity of the vacuum and } \mu_0 \text{ is the permeability of vacuum)?}$ 1 101 JEE MCQ NEW $\sqrt{\frac{\varepsilon_0}{\mu_0}}$, $\frac{\varepsilon_0}{\mu_0}$... 4 Edit Delete
18967 $\text{The area of a square is } 5.29 \text{ cm}^2. \text{ The area of } 7 \text{ such squares taking into account the significant figures is:}$ 1 101 JEE MCQ NEW $37.03 \text{ cm}^2$, $37.0 \text{ cm}^2$... 1 Edit Delete
18966 $\text{If surface tension } (S), \text{ Moment of Inertia } (I) \text{ and Planck's constant } (h), \text{ were to be taken as the fundamental units, the dimensional formula for linear momentum would be:}$ 1 101 JEE MCQ NEW $S^{3/2}I^{1/2}h^0$, $S^{1/2}I^{1/2}h^{-1}$... 4 Edit Delete
18965 $\text{In SI units, the dimensions of } \sqrt{\frac{\varepsilon_0}{\mu_0}} \text{ is:}$ 1 101 JEE MCQ NEW $A T^{-3} M L^{3/2}$, $A^{-1} T M L^3$... 4 Edit Delete
18964 $\text{The percentage errors in quantities } P, Q, R \text{ and } S \text{ are } 0.5\%, 1\%, 3\% \text{ and } 1.5\% \text{ respectively in the measurement of a physical quantity } A = \frac{P^3Q^2}{\sqrt{RS}}. \text{ The maximum percentage error in the value of } A \text{ will be:}$ 1 101 JEE MCQ NEW $6.5\%$, $7.5\%$... 1 Edit Delete
18963 $\text{The relative error in the determination of the surface area of a sphere is } \alpha. \text{ Then the relative error in the determination of its volume is:}$ 1 101 JEE MCQ NEW $\frac{3}{2} \alpha$, $\frac{2}{3} \alpha$... 1 Edit Delete
18962 $\text{In a screw gauge, } 5 \text{ complete rotations of the screw cause it to move a linear distance of } 0.25 \text{ cm.}$ $\text{There are } 100 \text{ circular scale divisions.}$ $\text{The thickness of a wire measured by this screw gauge gives a reading of } 4 \text{ main scale divisions and } 30 \text{ circular scale divisions.}$ $\text{Assuming negligible zero error, the thickness of the wire is:}$ 1 101 JEE MCQ NEW $0.4300 \text{ cm}$, $0.3150 \text{ cm}$... 4 Edit Delete
18961 $\text{The density of a material in the shape of a cube is determined by measuring three sides of the cube and its mass.}$ $\text{If the relative errors in measuring the mass and length are respectively } 1.5\% \text{ and } 1\%, \text{the maximum error in determining the density is:}$ 1 101 JEE MCQ NEW $2.5\%$, $3.5\%$... 3 Edit Delete
18960 $\text{A physical quantity } P \text{ is described by the relation } P = a^{\frac{1}{2}}b^2c^3d^{-4}. \text{ If the relative errors in the measurement of } a, b, c \text{ and } d \text{ respectively are } 2\%, 1\%, 3\% \text{ and } 5\%, \text{ then the relative error in } P \text{ will be:}$ 1 101 JEE MCQ NEW $25\%$, $12\%$... 4 Edit Delete
18959 $\text{Time } (T), \text{ velocity } (C) \text{ and angular momentum } (h) \text{ are chosen as fundamental quantities instead of mass, length, and time. In terms of these, the dimensions of mass would be:}$ 1 101 JEE MCQ NEW $[M] = [T^{-1}C^2h]$, $[M] = [T^{-1}C^{-2}h^{-1}]$... 3 Edit Delete
18958 $\text{A beaker contains a fluid of density } p \text{ kg/m}^3, \text{ specific heat } S \text{ J/kg}^\circ\text{C and viscosity } \eta. \text{ The beaker is filled up to height } h. \text{ To estimate the rate of heat transfer per unit area } Q/A \text{ by convection when the beaker is put on a hot plate, a student proposes that it should depend on } \eta, \left( \frac{S \Delta \theta}{h} \right), \text{ and } \left( \frac{1}{pg} \right) \text{ when } \Delta \theta \text{ (in } ^\circ\text{C) is the difference in the temperature between the bottom and top of the fluid. In that situation, the correct option for } (Q/A) \text{ is:}$ 1 101 JEE MCQ NEW $\eta \left( \frac{S \Delta \theta}{h} \right) \left( \frac{1}{pg} \right)$, $\eta \left( \frac{S \Delta \theta}{\eta h} \right) \left( \frac{1}{pg} \right)$... 4 Edit Delete
18957 $\text{If electronic charge } e, \text{ electron mass } m, \text{ speed of light in vacuum } c$ $\text{ and Planck's constant } h \text{ are taken as fundamental quantities,}$ $\text{the permeability of vacuum } \mu_0 \text{ can be expressed in units of:}$ 1 101 JEE MCQ NEW $\left( \frac{h}{me^2} \right)$, $\left( \frac{hc}{me^2} \right)$... 3 Edit Delete
18956 $\text{The diameter of a steel ball is measured using vernier calipers which have divisions of } 0.1 \text{ cm on its main scale (MS) and 10 divisions of its vernier scale (VS) match 9 divisions on the main scale. Three such measurements for a ball are given as:}$ $\begin{array}{|c|c|c|} \hline \text{S.No} & \text{MS (cm)} & \text{VS divisions} \\ \hline 1 & 0.5 & 8 \\ 2 & 0.5 & 4 \\ 3 & 0.5 & 6 \\ \hline \end{array}$ $\text{If the zero error is } -0.03 \text{ cm, then the mean corrected diameter is:}$ 1 101 JEE MCQ NEW $0.53 \text{ cm}$, $0.56 \text{ cm}$... 3 Edit Delete
18955 $\text{Which of the following equations is dimensionally consistent according to the principle of homogeneity, where } T \text{ is the time period, } G \text{ is the gravitational constant, } M \text{ is mass, and } r \text{ is the orbital radius?}$ 1 101 JEE MCQ NEW $T^2 = \frac{4\pi^2 r^3}{GM}$, $T^2 = \frac{4\pi^2 r^2}{GM}$... 1 Edit Delete
18954 $\text{A physical quantity } Q \text{ depends on other physical quantities } a, b \text{ and } c$ $\text{as } Q = \frac{a^4b^3}{c^2}. \text{ If the maximum percentage error in measurement of }$ $a, b \text{ and } c \text{ are } 3\%, 4\% \text{ and } 5\% \text{ respectively, then the maximum}$ $\text{percentage error in measurement of } Q \text{ is:}$ 1 101 JEE MCQ NEW $34\%$, $40\%$... 1 Edit Delete
18953 $\text{Statement I: Linear momentum and moment of force have the same dimensions.}$ $\text{Statement II: Planck's constant and angular momentum have the same dimension.}$ 1 101 JEE MCQ NEW $\text{Statement I is correct and Statement II is incorrect.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 2 Edit Delete
18952 $\text{The velocity } v \text{ is expressed in terms of wavelength } \lambda, \text{ acceleration due to gravity } g, \text{ and density of water } \rho \text{ as:}$ $v = \lambda^a g^b \rho^c.$ $\text{If this equation is dimensionally consistent, what are the values of } a, b, \text{ and } c?$ 1 101 JEE MCQ NEW $\left( \frac{1}{2}, \frac{1}{2}, 0 \right)$, $\left( 1, \frac{1}{2}, 0 \right)$... 1 Edit Delete
18951 $\text{Pressure } (P), \text{ volume } (V), \text{ temperature } (T) \text{ are related to each other as per the following relation:}$ $\left( P + \frac{a}{V^2} \right) (V-b) = RT$ $\text{Dimensions of } \frac{a}{b} \text{ are:}$ 1 101 JEE MCQ NEW $[MLT^{-2}]$, $[M^2LT^{-2}]$... 3 Edit Delete
18950 $\text{If } m = 5 \pm 0.2 \text{ and } v = 20 \pm 0.4, \text{ the error in measurement of K.E is:}$ 1 101 JEE MCQ NEW $4\%$, $8\%$... 2 Edit Delete
18949 $\text{The density } (\rho) \text{ of a body depends on the force applied } (F), \text{ its speed, and time of motion } (t) \text{ according to the relation:}$ $\rho = KF^a v^b t^c,$ $\text{where } K \text{ is a dimensionless constant. Then the values of } a, b, \text{ and } c \text{ are:}$ 1 101 JEE MCQ NEW $a = 1, \ b = -4, \ c = -2$, $a = 2, \ b = -4, \ c = -1$... 1 Edit Delete
18948 $\text{What is the maximum percentage error in the measurement of the quantity}$ $I = \frac{a^2b^3}{c\sqrt{d}},$ $\text{if the percentage errors in the measurements of } a, b, c, \text{ and } d \text{ are } 1\%, 2\%, 3\%, \text{ and } 4\%, \text{ respectively?}$ 1 101 JEE MCQ NEW 11\%, 12\%... 4 Edit Delete
18947 $\text{Match Column-I with Column-II and choose the correct option.}$ $\begin{array}{|c|c|} \hline \text{Column-I} & \text{Column-II} \\ \hline \text{I. Torque} & (a) \ [M^0LT^{-2}] \\ \text{II. Stress} & (b) \ [ML^{-1}T^{-2}] \\ \text{III. Coefficient of viscosity} & (c) \ [ML^{-1}T^{-1}] \\ \text{IV. Gravitational potential gradient} & (d) \ [ML^2T^{-2}] \\ \hline \end{array}$ $\text{Choose the correct option from the given ones:}$ 1 101 JEE MCQ NEW $\text{I} \rightarrow (a), \text{II} \rightarrow (c), \text{III} \rightarrow (b), \text{IV} \rightarrow (d)$, $\text{I} \rightarrow (d), \text{II} \rightarrow (b), \text{III} \rightarrow (c), \text{IV} \rightarrow (a)$... 3 Edit Delete
18946 $\text{The dimension of } \frac{1}{\mu_0 \varepsilon_0} \text{ is:}$ 1 101 JEE MCQ NEW $[MLT^{-1}]$, $[M^0LT^{-2}]$... 4 Edit Delete
18945 $\text{If mass, radius of cross-section and height of a cylinder are } (0.4 + 0.01) \text{ g},$ $ (6 + 0.03) \text{ m and height } (8 + 0.04) \text{ m. The maximum}$ $\text{percentage error in the measurement of density of cylinder is:}$ $1. \ 1\%$ $2. \ 4\%$ $3. \ 8\%$ $4. \ 7\%$ 1 101 JEE MCQ NEW $1\%$, $4\%$... 2 Edit Delete
18944 $\text{If universal gravitational constant } (G), \text{ Planck's constant } (h) \text{ and speed of light } (c) \text{ are taken as fundamental quantities then dimension of mass is equal to:}$ 1 101 JEE MCQ NEW $\sqrt{\frac{Gh}{c}}$, $\sqrt{\frac{G}{hc}}$... 4 Edit Delete
18943 $\left( P + \frac{an^2}{V^2} \right) \left( V - bn \right) = nRT$. $\text{If symbols have their usual meaning, then the dimensions of } \frac{V^2}{an^2} \text{ is same as that of:}$ 1 101 JEE MCQ NEW $\text{compressibility}$, $\text{bulk modulus}$... 1 Edit Delete
18942 $\text{If } R, X_L \text{ and, } X_C \text{ denote resistance, inductive reactance, and}$ $\text{capacitive reactance respectively. Then which of the following}$ $\text{options shows the 'dimensionless' physical quantity?}$ 1 101 JEE MCQ NEW $\frac{X_L X_C}{R}$, $\frac{R}{\sqrt{X_L X_C}}$... 2 Edit Delete
18941 $\text{Column-I lists a few physical quantities and Column-II lists their dimensions. Choose the correct option matching two lists correctly.}$ $\begin{array}{|c|c|} \hline \text{Column-I} & \text{Column-II} \\ \hline \text{(P) pressure gradient} & \text{(A) } M^1L^2T^{-2} \\ \text{(Q) energy density} & \text{(B) } M^1L^1T^{-1} \\ \text{(R) torque} & \text{(C) } M^1L^{-2}T^{-2} \\ \text{(S) impulse} & \text{(D) } M^1L^{-1}T^{-2} \\ \hline \end{array}$ 1 101 JEE MCQ NEW $(\text{P} - \text{C}), (\text{Q} - \text{A}), (\text{R} - \text{B}), (\text{S} - \text{D})$, $(\text{P} - \text{A}), (\text{Q} - \text{C}), (\text{R} - \text{B}), (\text{S} - \text{D})$... 2 Edit Delete
18940 $\text{If the dimensional formula of the pressure gradient is } X, \text{ the electric field has } Y, \text{ energy density has } W \text{ and latent heat has } Z. \text{ Then the dimensional formula of } \frac{[X][Y]}{[Z][W]} \text{ is:}$ 1 101 JEE MCQ NEW $[ML^{-2}T^{-1}A]$, $[ML^{-2}T^{-1}A^{-1}]$... 2 Edit Delete
18939 $\text{Match the following quantities in List I with their dimensions in List II:}$ $\begin{array}{|c|c|} \hline \text{List I} & \text{List II} \\ \hline \text{(P) Young's modulus} & \text{(A) } [ML^2T^{-1}] \\ \text{(Q) Planck's constant} & \text{(B) } [ML^{-1}T^{-2}] \\ \text{(R) Work function} & \text{(C) } [ML^{-1}T^{-1}] \\ \text{(S) Coefficient of viscosity} & \text{(D) } [ML^2T^{-2}] \\ \hline \end{array}$ $\text{Codes:}$ $\begin{array}{l} 1. \ P \rightarrow A, \ Q \rightarrow B, \ R \rightarrow C, \ S \rightarrow D \\ 2. \ P \rightarrow B, \ Q \rightarrow A, \ R \rightarrow D, \ S \rightarrow C \\ 3. \ P \rightarrow D, \ Q \rightarrow A, \ R \rightarrow C, \ S \rightarrow B \\ 4. \ P \rightarrow D, \ Q \rightarrow A, \ R \rightarrow B, \ S \rightarrow C \end{array}$ 1 101 JEE MCQ NEW $P \rightarrow A, \ Q \rightarrow B, \ R \rightarrow C, \ S \rightarrow D$, $P \rightarrow B, \ Q \rightarrow A, \ R \rightarrow D, \ S \rightarrow C$... 2 Edit Delete
18938 $\text{In an experiment to determine the diameter of a wire using a screw gauge, the following observations were recorded:}$ $\text{(a) The screw moves 0.5 mm on the main scale in one complete rotation.}$ $\text{(b) Total divisions on circular scale = 50.}$ $\text{(c) The main scale reading is 2.5 mm.}$ $\text{(d) 45}^{\text{th}} \text{ division of the circular scale is in the pitch line.}$ $\text{(e) The instrument has 0.03 mm negative error.}$ $\text{Then the diameter of the wire is:}$ 1 101 JEE MCQ NEW $2.92 \text{ mm}$, $2.54 \text{ mm}$... 3 Edit Delete
18937 $\text{A torque meter is calibrated to reference standards of mass, length, and time each with 5\% accuracy. After calibration, the measured torque with this torque meter will have net accuracy of:}$ 1 101 JEE MCQ NEW $15\%$, $25\%$... 2 Edit Delete
18936 $\text{A torque meter is calibrated to reference standards of mass, length, and time each with 5\% accuracy. After calibration, the measured torque with this torque meter will have net accuracy of:}$ 1 101 JEE MCQ NEW $15\%$, $25\%$... 2 Edit Delete
18935 $\text{In a Vernier Calipers, 10 divisions of the Vernier scale is equal to the 9 divisions of the main scale.}$ $\text{When both jaws of Vernier calipers touch each other, the zero of the Vernier scale is shifted to the left of zero of the main scale and 4}^{\text{th}} \text{ Vernier scale division exactly coincides with the main scale reading.}$ $\text{One main scale division is equal to 1 mm.}$ $\text{While measuring diameter of a spherical body, the body is held between two jaws.}$ $\text{It is now observed that zero of the Vernier scale lies between 30 and 31 divisions of main scale reading and 6}^{\text{th}} \text{ Vernier scale division exactly coincides with the main scale reading.}$ $\text{The diameter of the spherical body will be:}$ 1 101 JEE MCQ NEW $3.02 \text{ cm}$, $3.06 \text{ cm}$... 2 Edit Delete
18934 $\text{A student in the laboratory measured thickness of a wire using a screw gauge. The readings are } 1.22 \text{ mm, } 1.23 \text{ mm, } 1.19 \text{ mm and } 1.20 \text{ mm. The percentage error is } \frac{x}{121} \%. \text{ The value of } x \text{ is:}$ 1 101 JEE MCQ NEW $100$, $200$... 3 Edit Delete
18933 $\text{Velocity } (v) \text{ and acceleration } (a) \text{ in two systems of units } 1 \text{ and } 2 \text{ are related as } v_2 = \frac{n}{m^2} v_1 \text{ and } a_2 = \frac{a_1}{mn} \text{ respectively. Here } m \text{ and } n \text{ are constants. The relations for distance and time in the two systems, respectively, are:}$ 1 101 JEE MCQ NEW $\frac{n^3}{m^3} L_1 = L_2 \text{ and } \frac{n^2}{m} T_1 = T_2$, $L_1 = \frac{n^4}{m^2} L_2 \text{ and } T_1 = \frac{n^2}{m} T_2$... 1 Edit Delete
18932 $\text{Velocity } (v) \text{ and acceleration } (a) \text{ in two systems of units 1 and 2 are related as } v_2 = \frac{n}{m^2} v_1 \text{ and } a_2 = \frac{a_1}{mn} \text{ respectively. Here } m \text{ and } n \text{ are constants. The relations for distance and time in the two systems, respectively, are:}$ 1 101 JEE MCQ NEW $\frac{n^3}{m^3} L_1 = L_2 \text{ and } \frac{n^2}{m} T_1 = T_2$, $L_1 = \frac{n^4}{m^2} L_2 \text{ and } T_1 = \frac{n^2}{m} T_2$... 1 Edit Delete
18931 $\text{Given below are two statements:}$ $\text{Assertion (A): The product of pressure (P) and time (t) has the same dimension as that of the coefficient of viscosity.}$ $\text{Reason (R): Coefficient of viscosity} = \frac{\text{Force}}{\text{Velocity gradient}}$ 1 101 JEE MCQ NEW $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
18930 $\text{The distance of the Sun from Earth is } 1.5 \times 10^{11} \text{ m and its angular diameter is } (2000) \text{ s when observed from the earth. The diameter of the Sun will be:}$ 1 101 JEE MCQ NEW $2.45 \times 10^{10} \text{ m}$, $1.45 \times 10^{10} \text{ m}$... 3 Edit Delete
18929 $\text{If 'C' and 'V' represent capacity and voltage respectively then what are the dimensions of } \lambda, \text{ where } \lambda = \frac{C}{V}?$ 1 101 JEE MCQ NEW $\left[ M^{-2} L^{-3} I^2 T^6 \right]$, $\left[ M^{-3} L^{-4} I^3 T^7 \right]$... 4 Edit Delete
18928 $\text{In a typical combustion engine the work done by a gas molecule is given } W = \alpha^2 \beta e^{-\frac{\beta x^2}{kT}} . \text{ where } x \text{ is the displacement, } k \text{ is the Boltzmann constant and } T \text{ is the temperature. If } \alpha \text{ and } \beta \text{ are constants, dimensions of } \alpha \text{ will be:}$ 1 101 JEE MCQ NEW $[MLT^{-2}]$, $[M^0LT^0]$... 2 Edit Delete
18927 $\text{If } e \text{ is the electronic charge, } c \text{ is the speed of light in free space and } h \text{ is Planck's constant, the quantity } \frac{1}{4\pi\varepsilon_0} \left|\frac{e^2}{hc}\right| \text{ has dimensions of:}$ 1 101 JEE MCQ NEW $[M^0L^0T^0]$, $[LT^{-1}]$... 1 Edit Delete
18926 $\text{Match List-I with List-II.}$ $\text{List-I}$ \begin{array}{ll} (a) & h \text{ (Planck's constant)} \\ (b) & E \text{ (kinetic energy)} \\ (c) & V \text{ (electric potential)} \\ (d) & p \text{ (linear momentum)} \end{array}$ $\text{List-II}$ \begin{array}{ll} (i) & [MLT^{-1}] \\ (ii) & [ML^2T^{-1}] \\ (iii) & [ML^2T^{-2}] \\ (iv) & [ML^2A^{-1}T^{-3}] \end{array}$ $\text{Choose from the given option from the given ones:}$ 1 101 JEE MCQ NEW $(a) \rightarrow (iii), (b) \rightarrow (iv), (c) \rightarrow (ii), (d) \rightarrow (i)$, $(a) \rightarrow (ii), (b) \rightarrow (iii), (c) \rightarrow (iv), (d) \rightarrow (i)$... 2 Edit Delete
18925 $\text{The pitch of the screw gauge is } 1 \text{ mm and there are } 100 \text{ divisions on the circular scale.}$ $\text{When nothing is put in between the jaws, the zero of the circular scale lies } 8 \text{ divisions below the reference line.}$ $\text{When a wire is placed between the jaws, the first linear scale division is clearly visible while the } 72^{\text{nd}} \text{ division on a circular scale coincides with the reference line.}$ $\text{The radius of the wire is:}$ 1 101 JEE MCQ NEW $1.64 \text{ mm}$, $0.82 \text{ mm}$... 2 Edit Delete
18924 $\text{The period of oscillation of a simple pendulum } T = 2\pi \sqrt{\frac{L}{g}}.$ $\text{Measured value of } 'L' \text{ is } 1.0 \text{ m from meter scale having a minimum division of } 1 \text{ mm and time of one complete oscillation is } 1.95 \text{ s measured from stopwatch of } 0.01 \text{ s resolution. The percentage error in the determination of } 'g' \text{ will be:}$ 1 101 JEE MCQ NEW $1.13\%$, $1.03\%$... 1 Edit Delete
18923 $\text{The work done by a gas molecule in an isolated system is given by,}$ $\text{W} = \alpha \beta^2 e^{-\frac{x^2}{\alpha k T}}, \text{ where } x \text{ is the displacement, } k \text{ is the Boltzmann}$ $\text{constant and } T \text{ is the temperature, } \alpha \text{ and } \beta \text{ are constants. Then the}$ $\text{dimensions of } \beta \text{ will be:}$ 1 101 JEE MCQ NEW $[ML^2 T^{-2}]$, $[MLT^{-2}]$... 2 Edit Delete
18922 $\text{The density of a solid metal sphere is determined by measuring its mass and its diameter.}$ $\text{The maximum error in the density of the sphere is } \left( \frac{x}{100} \right)\%.$ $\text{If the relative errors in measuring the mass and the diameter are } 6.0\% \text{ and } 1.5\% \text{ respectively, the value of } x \text{ is:}$ 1 101 JEE MCQ NEW 503, 1050... 2 Edit Delete
18921 $\text{A screw gauge has } 50 \text{ divisions on its circular scale. The circular scale is } 4 \text{ units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale, a displacement of } 0.5 \text{ mm is noticed on the pitch scale. The nature of the zero error involved and the last count of the screw gauge are respectively:}$ 1 101 JEE MCQ NEW $\text{Positive, } 10 \, \mu \text{m}$, $\text{Negative, } 2 \, \mu \text{m}$... 1 Edit Delete
18920 $\text{The quantities } x = \frac{1}{\sqrt{\mu_0 \varepsilon_0}}, y = \frac{E}{B} \text{ and } z = \frac{L}{CR} \text{ are defined where } C$ $\text{-capacitance, } R\text{-Resistance, } L\text{-length, } E\text{-Electric field, } B\text{-magnetic}$ $\text{field and } \varepsilon_0, \mu_0 \text{ free space permittivity and permeability respectively. Then:}$ 1 101 JEE MCQ NEW $\text{Only } x \text{ and } y \text{ have the same dimension}$, $x, y \text{ and } z \text{ have the same dimension}$... 2 Edit Delete
18919 $\text{A quantity } x \text{ is given by } \left( \frac{IFv^2}{WL^4} \right) \text{ in terms of moment of inertia } I, \text{ force } F, \text{ velocity } v, \text{ work } W, \text{ and Length } L. \text{ The dimensional formula for } x \text{ is the same as that of:}$ 1 101 JEE MCQ NEW $\text{Coefficient of viscosity}$, $\text{Planck's constant}$... 3 Edit Delete
18918 $\text{If momentum } (P), \text{ area } (A), \text{ and time } (T) \text{ are taken as the fundamental physical quantities, then the dimensional formula of energy in terms of } P, A, \text{ and } T \text{ is:}$ 1 101 JEE MCQ NEW $[PA^{-1}T^{-2}]$, $[PA^{1/2}T^{-1}]$... 2 Edit Delete
18917 $\text{If speed } v, \text{ area } A \text{ and force } F \text{ are chosen as fundamental units, then the dimension of Young's modulus will be:}$ 1 101 JEE MCQ NEW $[FA^{-1}v^0]$, $[FA^2v^{-1}]$... 1 Edit Delete
18916 $\text{The least count of the main scale of a vernier callipers is } 1 \text{ mm. Its vernier scale is divided into } 10 \text{ divisions and coincide with } 9 \text{ divisions of the main scale.}$ $\text{When jaws are touching each other, the } 7^{\text{th}} \text{ division of vernier scale coincides with a division of main scale and the zero of vernier scale is lying right side of the zero of main scale.}$ $\text{When this vernier is used to measure length of a cylinder the zero of the vernier scale between } 3.1 \text{ cm and } 3.2 \text{ cm and } 4^{\text{th}} \text{ VSD coincides with a main scale division.}$ $\text{The length of the cylinder is: (VSD is vernier scale division)}$ 1 101 JEE MCQ NEW $3.21 \text{ cm}$, $2.99 \text{ cm}$... 4 Edit Delete
18915 $\text{The expression for time, in terms of the universal gravitational constant } G, \text{ Planck's constant } h, \text{ and the speed of light } c, \text{ is proportional to:}$ 1 101 JEE MCQ NEW $\sqrt{\frac{hc^5}{G}}$, $\sqrt{\frac{c^3}{Gh}}$... 3 Edit Delete
18914 $\text{In the formula } X = 5YZ^2, X \text{ and } Z \text{ have dimensions of}$ $\text{capacitance and magnetic field, respectively. What are the}$ $\text{dimensions of } Y \text{ in SI units?}$ 1 101 JEE MCQ NEW $[M^{-3}L^{-2}T^8A^4]$, $[M^{-2}L^{-2}T^6A^3]$... 1 Edit Delete
18913 $\text{In a simple pendulum experiment for determination of acceleration due to gravity } (g), \text{ time taken for } 20 \text{ oscillations is measured by using a watch of } 1 \text{ second least count.}$ $\text{The mean value of time taken comes out to be } 30 \text{ s.}$ $\text{The length of pendulum is measured by using a meter scale of least count } 1 \text{ mm and the value obtained is } 55.0 \text{ cm.}$ $\text{The percentage error in the determination of } g \text{ is close to:}$ 1 101 JEE MCQ NEW $0.7\%$, $6.8\%$... 2 Edit Delete
18912 $\text{The following observations were taken to determine the surface tension } T \text{ of water by the capillary method:}$ $\text{diameter of the capillary, } D = 1.25 \times 10^{-2} \text{ m}$ $\text{rise of water, } h = 1.45 \times 10^{-2} \text{ m}$ $\text{Using } g = 9.80 \text{ m/s}^2 \text{ and the simplified relation, the possible error in surface tension is closest to:}$ 1 101 JEE MCQ NEW $0.15\%$, $1.5\%$... 2 Edit Delete
18911 $\text{A screw gauge with a pitch of } 0.5 \text{ mm and a circular scale with } 50 \text{ divisions is used to measure the thickness of a thin sheet of Aluminium.}$ $\text{Before starting the measurement, it is found that when the two jaws of the screw gauge are brought in contact, the } 45^{\text{th}} \text{ division coincides with the main scale line and that the zero of the main scale is barely visible.}$ $\text{What is the thickness of the sheet if the main scale reading is } 0.5 \text{ mm and the } 25^{\text{th}} \text{ division coincides with the main scale line?}$ 1 101 JEE MCQ NEW $0.75 \text{ mm}$, $0.80 \text{ mm}$... 2 Edit Delete
18910 $\text{A student measures the time period of 100 oscillations of a simple pendulum four times. The data set is } 90 \text{ s, } 91 \text{ s, } 95 \text{ s and } 92 \text{ s. If the minimum division in the measuring clock is } 1 \text{ s, then the reported mean time should be:}$ 1 101 JEE MCQ NEW $92 \pm 2 \text{ s}$, $92 \pm 5 \text{ s}$... 1 Edit Delete
18909 $\text{If the capacitance of a nanocapacitor is measured in terms of a unit}$ $'u'$ $\text{made by combining the electronic charge}$ $'e',$ $\text{the Bohr radius}$ $'a_0',$ $\text{and the Planck's constant}$ $'h'$ $\text{and speed of light}$ $'c'$ $\text{then:}$ 1 101 JEE MCQ NEW $u = \frac{e^2 h}{e a_0}$, $u = \frac{e^2 c}{h a_0}$... 4 Edit Delete
18908 $\text{The period of oscillation on a simple pendulum is } T = 2\pi \sqrt{\frac{L}{g}}.$ $\text{The measured value of } L \text{ is } 20.0 \text{ cm known to have } 1 \text{ mm accuracy and the time for } 100 \text{ oscillations of the pendulum is found to be } 90 \text{ s using a wristwatch of } 1 \text{ s resolution. The accuracy in the determination of } g \text{ is:}$ 1 101 JEE MCQ NEW $2\%$, $3\%$... 2 Edit Delete
18907 $\text{A student measured the length of a rod and wrote its as } 3.50 \text{ cm.}$ $\text{Which instrument did he use to measure it?}$ 1 101 JEE MCQ NEW $\text{A vernier calliper where the 10 divisions in the vernier scale match with 9 divisions in the main scale and main scale has 10 divisions in } 1 \text{ cm.}$, $\text{A screw gauge having 100 divisions in the circular scale and pitch as } 1 \text{ mm.}$... 1 Edit Delete
18906 $\text{The current-voltage relation of the diode is given by}$ $I = \left(e^{\frac{1000V}{T}} - 1\right) \text{ mA},$ $\text{where the applied voltage } V \text{ is in volts and the temperature } T \text{ is in degree Kelvin.}$ $\text{If a student makes an error measuring } \pm 0.01 \text{ V while measuring the current of } 5 \text{ mA at } 300 \text{ K,}$ $\text{what will be the error in the value of current in mA?}$ 1 101 JEE MCQ NEW 0.02 \text{ mA}, 0.5 \text{ mA}... 4 Edit Delete
18905 $\text{The correct reactions among the following are:}$ $\text{a. MnO}_4^- + \text{H}^+ + \text{Fe}^{2+} \rightarrow 2\text{Mn}^{2+} + \text{Fe}^{3+} + \text{H}_2\text{O}$ $\text{b. C}_2\text{O}_4^{2-} + \text{MnO}_4^- + \text{H}^+ \rightarrow \text{Mn}^{2+} + \text{H}_2\text{O} + \text{CO}_2$ $\text{c. SO}_2 + \text{MnO}_4^- + \text{H}^+ \rightarrow \text{Mn}^{2+} + \text{H}_2\text{O} + \text{SO}_3$ 2 222 Recommended Questions $\text{a and c}$, $\text{b and c}$... 3 Edit Delete
18904 $\text{Which compound cannot decolourise KMnO}_4 \text{ solution?}$ 2 222 Recommended Questions $\text{CO}_3^{2-}$, $\text{NO}_2^{-}$... 1 Edit Delete
18903 $\text{What is produced when excessive diluted nitric acid is combined with potassium chromate?}$ 2 222 Recommended Questions $\text{Cr}_2\text{O}_7^{2-} \text{ and H}_2\text{O}$, $\text{Cr}^{3+} \text{ and Cr}_2\text{O}_7^{2-}$... 1 Edit Delete
18902 $\text{When KMnO}_4 \text{ solution is added to hot oxalic acid solution, the decolorization is slow in the beginning but becomes instantaneous after some time. This is because:}$ 2 222 Recommended Questions $\text{Mn}^{2+} \text{ acts as auto catalyst.}$, $\text{CO}_2 \text{ is formed.}$... 1 Edit Delete
18901 $\text{Highest oxidation state of manganese in fluoride is } +4 \text{ (MnF}_4\text{) but the highest oxidation state in oxides is } +7 \text{ (Mn}_2\text{O}_7\text{). The reason is:}$ 2 222 Recommended Questions $\text{Fluorine is more electronegative than oxygen.}$, $\text{Fluorine does not possess d orbitals.}$... 4 Edit Delete
18900 $\text{The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution will be:}$ 2 222 Recommended Questions $+2$, $+3$... 2 Edit Delete
18899 $\text{Which of the following pairs of substances on reaction will not evolve gas?}$ 2 222 Recommended Questions $\text{Iron, and } \text{H}_2\text{SO}_4 \text{ (aq)}$, $\text{Iron, and steam}$... 3 Edit Delete
18898 $\text{CrO}_4^{2-} \text{ (yellow) changes to } \text{Cr}_2\text{O}_7^{2-} \text{ (orange) in pH } = x \text{ and vice versa in pH } = y.$ $\text{The value of } x \text{ and } y \text{ will be:}$ 2 222 Recommended Questions $6, \text{ and } 8$, $6, \text{ and } 5$... 1 Edit Delete
18897 $\text{A gas that can readily decolorize an acidified KMnO}_4 \text{ solution is:}$ 2 222 Recommended Questions $\text{SO}_2$, $\text{NO}_2$... 1 Edit Delete
18896 $\text{HCl is not used to make the medium acidic in oxidation reaction of } \text{KMnO}_4, \text{ because}$ 2 222 Recommended Questions $\text{Both HCl and KMnO}_4 \text{ act as oxidising agents.}$, $\text{KMnO}_4 \text{ oxidises HCl into Cl}_2, \text{ which is also an oxidising agent.}$... 2 Edit Delete
18895 $\text{When neutral or faintly alkaline } \text{KMnO}_4 \text{ is treated with potassium iodide, the iodide ion is converted into 'X'. The formula of 'X' is:}$ 2 222 Recommended Questions $\text{I}_2$, $\text{IO}_4^-$... 3 Edit Delete
18894 $\text{The fusion of chromite ore (FeCr}_2\text{O}_4\text{) with Na}_2\text{CO}_3\text{ in air gives a yellow solution upon the addition of water. Subsequent treatment with H}_2\text{SO}_4\text{ produces an orange solution.}$ $\text{The yellow and orange colours, respectively, are due to the formation of:}$ 2 222 Recommended Questions $\text{Na}_2\text{CrO}_4\text{ and Na}_2\text{Cr}_2\text{O}_7$, $\text{Cr(OH)}_3\text{ and Na}_2\text{Cr}_2\text{O}_7$... 1 Edit Delete
18893 $\text{The reaction(s) involved in the preparation of potassium dichromate from iron chromite ore is/are:}$ $1. \ \text{FeCr}_2\text{O}_4 + \text{NaOH} + \text{O}_2 \rightarrow \text{Na}_2\text{CrO}_4 + \text{Fe}_2\text{O}_3 + \text{H}_2\text{O}$ $2. \ \text{Na}_2\text{CrO}_4 + \text{H}_2\text{SO}_4 \text{ (conc.)} \rightarrow \text{Na}_2\text{Cr}_2\text{O}_7 + \text{Na}_2\text{SO}_4 + \text{H}_2\text{O}$ $3. \ \text{Na}_2\text{Cr}_2\text{O}_7 + \text{KCl} \rightarrow \text{K}_2\text{Cr}_2\text{O}_7 + \text{NaCl}$ $4. \ \text{All of the above.}$ 2 222 Recommended Questions $\text{FeCr}_2\text{O}_4 + \text{NaOH} + \text{O}_2 \rightarrow \text{Na}_2\text{CrO}_4 + \text{Fe}_2\text{O}_3 + \text{H}_2\text{O}$, $\text{Na}_2\text{CrO}_4 + \text{H}_2\text{SO}_4 \text{ (conc.)} \rightarrow \text{Na}_2\text{Cr}_2\text{O}_7 + \text{Na}_2\text{SO}_4 + \text{H}_2\text{O}$... 4 Edit Delete
18892 $\text{The incorrect statement among the following regarding Cerium is:}$ 2 222 Recommended Questions $\text{The +4 oxidation state of cerium is not known in solutions.}$, $\text{The +3 oxidation state of cerium is more stable than the +4 oxidation state.}$... 1 Edit Delete
18891 $\text{The three lanthanides that show a } +2 \text{ oxidation state are:}$ 2 222 Recommended Questions $\text{Sm, Tb, Gd}$, $\text{Sm, Eu, Yb}$... 2 Edit Delete
18890 $\text{Actinide contraction is mainly related to:}$ $1. \text{Poor shielding by 5f subshell}$ $2. \text{Extraordinary decrement in } Z_{\text{eff}}$ $3. \text{Both (1) and (2)}$ $4. \text{Strong shielding by 5f subshell}$ 2 222 Recommended Questions $\text{Poor shielding by 5f subshell}$, $\text{Extraordinary decrement in } Z_{\text{eff}}$... 1 Edit Delete
18889 $\text{The reason for lanthanoid contraction is:}$ $1. \text{Negligible screening effect of 'f' orbitals}$ $2. \text{Increasing nuclear charge}$ $3. \text{Decreasing nuclear charge}$ $4. \text{Decreasing screening effect}$ 2 222 Recommended Questions $\text{Negligible screening effect of 'f' orbitals}$, $\text{Increasing nuclear charge}$... 1 Edit Delete
18888 $\text{The consequence(s) of lanthanoid contraction is/are:}$ 2 222 Recommended Questions $\text{Similarity in the properties of second and third transition series.}$, $\text{Separation of lanthanoids is difficult.}$... 4 Edit Delete
18887 $\text{A pair among the following that have the same size is:}$ 2 222 Recommended Questions $\text{Fe}^{2+}, \text{Ni}^{2+}$, $\text{Zr}^{4+}, \text{Ti}^{4+}$... 3 Edit Delete
18886 $\text{The incorrect statement among the following is:}$ 2 222 Recommended Questions $\text{There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.}$, $\text{Lanthanoid contraction is the accumulation of successive shrinkages.}$... 3 Edit Delete
18885 $\text{The lanthanide contraction is responsible for the fact that:}$ 2 222 Recommended Questions $\text{Zr and Y have about the same radius.}$, $\text{Zr and Zn have the same oxidation state.}$... 3 Edit Delete
18884 $\text{An actinoid that does not have one electron in its 6d orbital is -}$ 2 222 Recommended Questions $\text{U (Atomic number. 92)}$, $\text{Np (Atomic number. 93)}$... 3 Edit Delete
18883 $\text{Consider the following statements:}$ $\text{a. Lanthanoid and actinoid belong to the f block and their general electronic}$ $\text{configuration is } nf^{1-14} n-1d^{0-1}ns^2.$ $\text{b. All lanthanides and actinoids show an oxidation state of +3.}$ $\text{c. The magnetic properties of the actinoids are more complex than those of}$ $\text{the lanthanoids.}$ $\text{d. Lanthanoids are comparatively less electropositive than actinides}$ $\text{Correct statements amongst the above are:}$ 2 222 Recommended Questions $\text{a, b}$, $\text{c, d, a}$... 4 Edit Delete
18882 $\text{The unpaired electron in Eu}^{3+} \text{ will bear similarities to that found in:}$ 2 222 Recommended Questions $\text{Yb}^{2+}$, $\text{Ho}^{3+}$... 3 Edit Delete
18881 $\text{Which of the following compounds cannot act as an oxidising agent?}$ 2 222 Recommended Questions $\text{CrO}_3$, $\text{CrO}_4^{2-}$... 3 Edit Delete
18880 $\text{The actinoid that can show oxidation states up to } +7 \text{ is:}$ 2 222 Recommended Questions $\text{Am}$, $\text{Th}$... 4 Edit Delete
18879 $\text{Give below are some atomic numbers:}$ $29, 59, 74, 95, 102, 104$ $\text{The atomic numbers of the inner transition elements among the above are:}$ 2 222 Recommended Questions $29, 59, 74$, $59, 95, 102$... 2 Edit Delete
18878 $\text{From the following, which is the most basic hydroxide?}$ 2 222 Recommended Questions $\text{Ce(OH)}_3$, $\text{Lu(OH)}_3$... 1 Edit Delete
18877 $\text{The correct statement regarding inner transition elements is}$ 2 222 Recommended Questions $\text{The general electronic configuration of actinoids is } [\text{Xe}]^{54} 4f^{1-14}5d^{0-1}6s^2$, $\text{The general electronic configuration of lanthanoids is } [\text{Rn}]^{86} 5f^{1-14}6d^{0-1}7s^2$... 3 Edit Delete
18876 $\text{The electronic configurations of Eu (Atomic no. 63), Gd (Atomic no. 64), and Tb (Atomic no. 65) are, respectively:}$ 2 222 Recommended Questions $[\text{Xe}] 4f^6 5d^1 6s^2, [\text{Xe}]4f^7 5d^1 6s^2, \text{and } [\text{Xe}] 4f^9 6s^2$, $[\text{Xe}] 4f^6 5d^1 6s^2, [\text{Xe}]4f^7 5d^1 6s^2, \text{and } [\text{Xe}]4f^8 5d^1 6s^2$... 3 Edit Delete
18875 $\text{The incorrect statement among the following is:}$ 2 222 Recommended Questions $\text{Zirconium and Hofnium have identical radii of 160 pm and 159 pm, respectively, as a consequence of lanthanoid contraction.}$, $\text{Lanthanoids reveal only a +3 oxidation state.}$... 2 Edit Delete
18874 $\text{The electronic configuration of the last element of actinoids is:}$ 2 222 Recommended Questions $\text{Thorium, Th: } [\text{Rn}]5f^{14}6d^17s^2$, $\text{Lawrencium, Lr: } [\text{Rn}]5f^{14}6d^17s^2$... 2 Edit Delete
18873 $\text{Actinoids show a greater number of oxidation states than lanthanoids because:}$ 2 222 Recommended Questions $\text{4f- orbitals are more diffused than 5f-orbitals}$, $\text{Lesser energy difference between 5f, and 6d orbitals than between 4f, and 5d orbitals}$... 2 Edit Delete
18872 $\text{Which one of the following is a diamagnetic ion?}$ 2 222 Recommended Questions $\text{La}^{3+}$, $\text{Lu}^{3+}$... 4 Edit Delete
18871 $\text{Lanthanide's most common oxidation state is:}$ $1.\ 2$ $2.\ 5$ $3.\ 3$ $4.\ 4$ 2 222 Recommended Questions $2$, $5$... 3 Edit Delete
18870 $\text{The different oxidation states exhibited by the lanthanoids are:}$ 2 222 Recommended Questions $+2, -3, +4$, $-2, -3, -4$... 4 Edit Delete
18869 $\text{The most common oxidation state for lanthanoids and actinoids is:}$ 2 222 Recommended Questions $+5$, $-3$... 4 Edit Delete
18868 $\text{Which of the following has the highest negative } (\text{M}^{2+}/\text{M}) \text{ standard electrode potential?}$ 2 222 Recommended Questions $\text{Ti}$, $\text{Cu}$... 1 Edit Delete
18867 $\text{Select the appropriate statement(s) from the following options:}$ 2 222 Recommended Questions $\text{The maximum oxidation state of the d block elements appears in the middle and the minimum at the extreme ends.}$, $\text{IE}_1 \text{ of third transition series elements is smaller than IE}_1 \text{ of second and first transition series elements.}$... 4 Edit Delete
18866 $\text{Zn gives H}_2 \text{ gas with H}_2\text{SO}_4 \text{ and HCl but not with HNO}_3 \text{ because:}$ 2 222 Recommended Questions $\text{Zn acts as an oxidizing agent when it reacts with HNO}_3$, $\text{HNO}_3 \text{ is weaker acid than H}_2\text{SO}_4 \text{ and HCl}$... 4 Edit Delete
18865 $\text{The element that has a maximum composition in Mischmetal and is used in the gas lighters is:}$ 2 222 Recommended Questions $\text{Ce}$, $\text{Fe}$... 1 Edit Delete
18864 $\text{Match the solutions given in Column I with the colours given in Column II.}$ $\text{Column I (Aqueous solution of salt)}$ $\begin{array}{ll} \text{A. FeSO}_4 \cdot \text{7H}_2\text{O} & \text{1. Green} \\ \text{B. NiCl}_2 \cdot \text{4H}_2\text{O} & \text{2. Light pink} \\ \text{C. MnCl}_2 \cdot \text{4H}_2\text{O} & \text{3. Blue} \\ \text{D. CoCl}_2 \cdot \text{6H}_2\text{O} & \text{4. Pale green} \\ & \text{5. Pink} \end{array}$ $\text{Codes:}$ $\begin{array}{cccc} \text{A} & \text{B} & \text{C} & \text{D} \\ 2 & 3 & 4 & 1 \\ 1 & 2 & 3 & 5 \\ 5 & 4 & 3 & 2 \\ 4 & 1 & 2 & 5 \end{array}$ 2 222 Recommended Questions $2, 3, 4, 1$, $1, 2, 3, 5$... 4 Edit Delete
18863 $\text{Which of the following statements is false?}$ 2 222 Recommended Questions $\text{MnO}_2 \text{ dissolves in conc. HCl, but does not form Mn}^{4+} \text{ ions.}$, $\text{MnO}_2 \text{ oxidizes hot concentrated H}_2\text{SO}_4 \text{ liberating oxygen.}$... 4 Edit Delete
18862 $\text{An incorrect statement regarding the stability of oxidation state for the elements of the 3d series is:}$ 2 222 Recommended Questions $\text{The number of oxidation states increases on moving from Sc to Mn.}$, $\text{The relative stability of the +2 oxidation state increases on moving from top to bottom.}$... 3 Edit Delete
18861 $\text{An example of the effect of the concentration of nitric acid on the formation of oxidation products would be:}$ 2 222 Recommended Questions $3\text{Cu} + 8\text{HNO}_3 \rightarrow 3\text{Cu(NO}_3)_2 + 2\text{NO} + 4\text{H}_2\text{O}$, $\text{Cu} + 4\text{HNO}_3 \rightarrow 3\text{Cu(NO}_3)_2 + 2\text{NO}_2 + 2\text{H}_2\text{O}$... 2 Edit Delete
18860 $\text{The configuration that shows the outer transition element among the following is:}$ 2 222 Recommended Questions $[\text{Rn}]7s^2$, $[\text{Xe}]4f^75d^16s^2$... 3 Edit Delete
18859 $\text{In the 3d series, a metal with a +1 oxidation state is:}$ 2 222 Recommended Questions $\text{Mn}$, $\text{Cu}$... 2 Edit Delete
18858 $\text{Which of the following is a coloured and paramagnetic compound?}$ 2 222 Recommended Questions $\text{CuF}_2$, $\text{K}_2\text{Cr}_2\text{O}_7$... 1 Edit Delete
18857 $\text{A diamagnetic lanthanoid ion among the following is:}$ $\text{(At. numbers: Ce = 58, Sm = 62, Eu = 63, Yb = 70)}$ 2 222 Recommended Questions $\text{Ce}^{2+}$, $\text{Eu}^{2+}$... 4 Edit Delete
18856 $\text{The native silver metal forms a water-soluble complex with a dilute aqueous solution of NaCN in the presence of:}$ 2 222 Recommended Questions $\text{Nitrogen}$, $\text{Oxygen}$... 2 Edit Delete
18855 $\text{Which of the following elements has the strongest metallic bond?}$ 2 222 Recommended Questions $\text{Fe}$, $\text{Sc}$... 4 Edit Delete
18854 $\text{Match the properties given in Column I with the metals given in Column II:}$ $\begin{array}{|c|c|} \hline \text{Column I - (Property)} & \text{Column II - (Metal)} \\ \hline \text{A. Element with highest second ionisation enthalpy} & 1. \text{V} \\ \text{B. Element with highest third ionisation enthalpy} & 2. \text{Cr} \\ \text{C. M in M(CO)}_6 \text{ is} & 3. \text{Cu} \\ \text{D. Element with the highest heat of atomisation} & 4. \text{Zn} \\ \hline \end{array}$ 2 222 Recommended Questions $\begin{array}{cccc} 3 & 4 & 1 & 2 \end{array}$, $\begin{array}{cccc} 3 & 4 & 2 & 1 \end{array}$... 2 Edit Delete
18853 $\text{The spin-only magnetic moment of } \text{Ce}^{3+} \text{ is:}$ 2 222 Recommended Questions $3.25$, $1.73$... 2 Edit Delete
18852 $\text{The } E^\circ \left(\text{M}^{2+}/\text{M}\right) \text{ value for copper is positive } (+0.34 \text{ V}), \text{ because}$ 2 222 Recommended Questions $\text{Copper has a high energy of atomization and a low hydration energy}$, $\text{Copper has low energy of atomization and high hydration energy}$... 1 Edit Delete
18851 $\text{The incorrect statement among the following about the chemistry of 3d and 4f series elements is}$ 2 222 Recommended Questions $\text{3d elements show more oxidation states than 4f series elements.}$, $\text{The energy difference between 3d and 4s orbitals is very little.}$... 4 Edit Delete
18850 $\text{Which of the following ions displays the d-d transition and paramagnetism?}$ 2 222 Recommended Questions $\text{CrO}_4^{2-}$, $\text{Cr}_2\text{O}_7^{2-}$... 4 Edit Delete
18849 $\text{Which of the following statements is false?}$ 2 222 Recommended Questions $\text{Cr}^{2+} \text{ is strongly oxidizing while manganese(III) is strongly reducing.}$, $\text{Cobalt(II) is stable in an aqueous solution but in the presence of complexing reagents, it is easily oxidized.}$... 1 Edit Delete
18848 $\text{The addition of non-metals like B and C to the interstitial sites of a transition metal increases}$ 2 222 Recommended Questions $\text{Ductility}$, $\text{Melting Point}$... 2 Edit Delete
18847 $\text{Which of the following metals does not form amalgam?}$ 2 222 Recommended Questions $\text{Fe}$, $\text{Au}$... 1 Edit Delete
18846 $\text{The acidified } \text{K}_2\text{Cr}_2\text{O}_7 \text{ solution turns green when } \text{Na}_2\text{SO}_3 \text{ is added to it. This is due to the formation of:}$ 2 222 Recommended Questions $\text{CrO}_4^{2-}$, $\text{Cr}_2(\text{SO}_3)_3$... 4 Edit Delete
18845 $\text{Zinc can be coated on iron to produce galvanised iron, but the reverse is not possible because:}$ 2 222 Recommended Questions $\text{Zinc is lighter than iron.}$, $\text{Zinc has a lower melting point than iron.}$... 4 Edit Delete
18844 $\text{When iron becomes passive by "X", it is due to the formation of "Y". X and Y, respectively, are:}$ 2 222 Recommended Questions $\text{Dil. HCl, Fe}_2\text{O}_3$, $80\% \text{ Conc. HNO}_3, \text{ Fe}_3\text{O}_4$... 2 Edit Delete
18843 $\text{Which of the following statements is false?}$ 2 222 Recommended Questions $\text{Copper liberates hydrogen from acids.}$, $\text{In its higher oxidation states, manganese forms stable compounds with oxygen and fluorine.}$... 1 Edit Delete
18842 $\text{Which of the following statements is true?}$ 2 222 Recommended Questions $\text{Cu(II)}_{\text{aq}} \text{ is more stable.}$, $\text{Cu(II)}_{\text{aq}} \text{ is less stable.}$... 1 Edit Delete
18841 $\text{Which of the following elements has the highest second ionization enthalpy?}$ 2 222 Recommended Questions $\text{Cr}$, $\text{Mn}$... 1 Edit Delete
18840 $\text{The metallic radii of some transition elements are given below. An element that has the highest density is:}$ $\begin{array}{cc} \text{Element} & \text{Fe} \quad \text{Co} \quad \text{Ni} \quad \text{Cu} \\ \text{Metallic radii/pm} & 126 \quad 125 \quad 125 \quad 128 \end{array}$ 2 222 Recommended Questions $\text{Fe}$, $\text{Ni}$... 4 Edit Delete
18839 $\text{Which compound exhibits colour in its solid state?}$ 2 222 Recommended Questions $\text{Ag}_2\text{SO}_4$, $\text{CuF}_2$... 2 Edit Delete
18838 $\text{The correct statement regarding the element silver (Ag) is:}$ 2 222 Recommended Questions $\text{It is a hard metal.}$, $\text{It is not a transition element.}$... 3 Edit Delete
18837 $\text{The ionization potential values of d-block elements as compared to the ionization potential values of f-block elements are:}$ 2 222 Recommended Questions $\text{Higher}$, $\text{Equal}$... 1 Edit Delete
18836 $\text{For M}^{2+}/\text{M, and M}^{3+}/\text{M}^{2+}, \text{ the } E^\circ \text{ values of some metals are given in the table below:}$ $\begin{array}{|c|c|} \hline \text{Cr}^{+2}/\text{Cr} = -0.9 \text{ V} & \text{Cr}^{+3}/\text{Cr}^{+2} = -0.4 \text{V} \\ \hline \text{Mn}^{+2}/\text{Mn} = -1.2 \text{V} & \text{Mn}^{+3}/\text{Mn}^{+2} = +1.5 \text{V} \\ \hline \text{Fe}^{+2}/\text{Fe} = -0.4 \text{V} & \text{Fe}^{+3}/\text{Fe}^{+2} = +0.8 \text{V} \\ \hline \end{array}$ $\text{The correct inference(s) from the above data is/are:}$ 2 222 Recommended Questions $\text{The increasing order of their stability is Mn}^{3+}< \text{Fe}^{3+}< \text{Cr}^{3+}$, $\text{The increasing order of the above-mentioned metals ability to get oxidized is: Fe < Cr < Mn}$... 4 Edit Delete
18835 $\text{The basic character of the transition metal monoxides follows the order:}$ $\text{(Atomic nos. Ti = 22, V = 23, Cr = 24, Fe = 26)}$ 2 222 Recommended Questions $\text{VO} > \text{CrO} > \text{TiO} > \text{FeO}$, $\text{CrO} > \text{VO} > \text{FeO} > \text{TiO}$... 4 Edit Delete
18834 $\text{When copper is heated with conc. } \text{HNO}_3 \text{ it produces:}$ 2 222 Recommended Questions $\text{Cu(NO}_3\text{)}_2 \text{ and NO}_2$, $\text{Cu(NO}_3\text{)}_2 \text{ and NO}$... 1 Edit Delete
18833 $\text{Which of the following statements is false?}$ 2 222 Recommended Questions $\text{V}^{2+} < \text{Cr}^{2+} < \text{Mn}^{2+} < \text{Fe}^{2+} : \text{Paramagnetic behaviour}$, $\text{Ni}^{2+} < \text{Co}^{2+} < \text{Fe}^{2+} < \text{Mn}^{2+} : \text{Ionic size}$... 1 Edit Delete
18832 $\text{Which of the following statements is false?}$ 2 222 Recommended Questions $\text{On passing H}_2\text{S through acidified K}_2\text{Cr}_2\text{O}_7 \text{ solution, a milky colour is observed.}$, $\text{Na}_2\text{Cr}_2\text{O}_7 \text{ is preferred over K}_2\text{Cr}_2\text{O}_7 \text{ in volumetric analysis.}$... 2 Edit Delete
18831 $\text{Which of the following elements can combine with chlorine to form more than one binary compound?}$ 2 222 Recommended Questions $\text{Zn}$, $\text{K}$... 4 Edit Delete
18830 $\text{The correct trend for I.E}_1 \text{ (1st Ionization Enthalpy) in the 3d series is:}$ 2 222 Recommended Questions $\text{Ionisation energy regularly decreases on moving along the period.}$, $\text{Ionisation energy regularly increases on moving along the period.}$... 3 Edit Delete
18829 $\text{What is the electronic configuration of transition elements?}$ 2 222 Recommended Questions $(n-1)d^{1-10}ns^{0-2}$, $(n-1)d^{1-10}ns^2$... 1 Edit Delete
18828 $\text{Which of the following species is colourless?}$ 2 222 Recommended Questions $\text{TiF}_6^{2-} \text{ and } \text{CoF}_6^{3-}$, $\text{Cu}_2\text{Cl}_2 \text{ and } \text{NiCl}_4^{2-}$... 3 Edit Delete
18827 $\text{Among the following, which are amphoteric oxides?}$ $1. \text{V}_2\text{O}_5, \text{Cr}_2\text{O}_3$ $2. \text{Mn}_2\text{O}_7, \text{CrO}_3$ $3. \text{CrO}, \text{V}_2\text{O}_5$ $4. \text{V}_2\text{O}_5, \text{V}_2\text{O}_4$ 2 222 Recommended Questions $\text{V}_2\text{O}_5, \text{Cr}_2\text{O}_3$, $\text{Mn}_2\text{O}_7, \text{CrO}_3$... 1 Edit Delete
18826 $\text{In an aqueous solution, coloured ions would be:}$ 2 222 Recommended Questions $\text{Ti}^{3+}, \text{V}^{3+}, \text{Cu}^{+}$, $\text{Sc}^{3+}, \text{Mn}^{2+}, \text{Fe}^{3+}$... 3 Edit Delete
18825 $\text{Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II}$ $\text{and select the correct match:}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Co}^{3+} & \text{i. } \sqrt{8} \text{ B.M.} \\ \text{B. Cr}^{3+} & \text{ii. } \sqrt{35} \text{ B.M.} \\ \text{C. Fe}^{3+} & \text{iii. } \sqrt{15} \text{ B.M.} \\ \text{D. Ni}^{2+} & \text{iv. } \sqrt{24} \text{ B.M.} \\ \hline \end{array}$ 2 222 Recommended Questions $\text{A. iv, B. iii, C. ii, D. i}$, $\text{A. i, B. ii, C. iii, D. iv}$... 1 Edit Delete
18824 $\text{The increasing order of oxidising power among the following species is:}$ 2 222 Recommended Questions $\text{VO}_2^+ < \text{Cr}_2\text{O}_7^{2-} < \text{MnO}_4^-$, $\text{VO}_2^+ < \text{MnO}_4^- < \text{Cr}_2\text{O}_7^{2-}$... 1 Edit Delete
18823 $\text{The "Disproportionation" reaction means that:}$ 2 222 Recommended Questions $\text{A relatively less stable oxidation state undergoes an oxidation-reduction reaction.}$, $\text{A relatively more stable oxidation state undergoes an oxidation-reduction reaction.}$... 1 Edit Delete
18822 $\text{Iron does not get oxidised in:}$ 2 222 Recommended Questions $\text{Rusting of iron sheets}$, $\text{Decolourisation of blue CuSO}_4 \text{ solution by iron}$... 3 Edit Delete
18821 $\text{The values of X, Y, P, and Q are, respectively:}$ $X + \text{MnO}_2 + \text{O}_2$ $\Delta$ $\text{KMnO}_4$ $Y$ $\text{Explosive oil (P) if KMnO}_4 \text{ is in excess}$ $\text{Green (Q) if Y is in excess}$ 2 222 Recommended Questions $\text{MnO}_3^+, \text{Mn}_2\text{O}_7, \text{conc. H}_2\text{SO}_4, \text{and K}_2\text{MnO}_4$, $\text{K}_2\text{MnO}_4, \text{conc. H}_2\text{SO}_4, \text{Mn}_2\text{O}_7, \text{and MnO}_3^+$... 2 Edit Delete
18820 $\text{Among the following, the incorrect statement regarding interstitial compounds is:}$ $\text{1. They retain metallic conductivity.}$ $\text{2. They are chemically reactive.}$ $\text{3. They are much harder than the pure metal.}$ $\text{4. They have higher melting points than the pure metal.}$ 2 222 Recommended Questions $\text{They retain metallic conductivity.}$, $\text{They are chemically reactive.}$... 2 Edit Delete
18819 $\text{Urea reacts with water to form A, which decomposes to form B. When B is passed through Cu}^{2+}\text{ (aq), a deep blue-colored solution C is formed}$ $\text{The formula of C is:}$ 2 222 Recommended Questions $[\text{Cu (NH}_3)_4]^{2+}$, $\text{Cu (OH)}_2$... 1 Edit Delete
18818 $\text{Match the following:}$ $\begin{array}{|c|c|} \hline \text{Ions} & \text{Number of unpaired electrons} \\ \hline \text{i. Mn}^{3+} & \text{a. 2} \\ \text{ii. Cr}^{3+} & \text{b. 4} \\ \text{iii. V}^{3+} & \text{c. 1} \\ \text{iv. Ti}^{3+} & \text{d. 3} \\ \hline \end{array}$ 2 222 Recommended Questions $\begin{array}{cccc} \text{i. c} & \text{ii. d} & \text{iii. b} & \text{iv. a} \end{array}$, $\begin{array}{cccc} \text{i. b} & \text{ii. d} & \text{iii. a} & \text{iv. c} \end{array}$... 2 Edit Delete
18817 $\text{Which of the following ions has the most unpaired electrons?}$ 2 222 Recommended Questions $\text{Fe}^{2+}$, $\text{Fe}^{3+}$... 2 Edit Delete
18816 $\text{A pair among the following that has both coloured ions in the aqueous solution is-}$ $\text{(At. no : Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)}$ 2 222 Recommended Questions $\text{Ni}^{2+}, \text{Ti}^{3+}$, $\text{Sc}^{3+}, \text{Ti}^{3+}$... 1 Edit Delete
18815 $\text{The electronic configuration of gadolinium (atomic number of 64) is:}$ 2 222 Recommended Questions $[\text{Xe}] 4f^3 5d^5 6s^2$, $[\text{Xe}] 4f^7 5d^2 6s^1$... 3 Edit Delete
18814 $\text{The pairs having similar magnetic moments are:}$ 2 222 Recommended Questions $\text{Ti}^{3+}, \text{V}^{3+}$, $\text{Cr}^{3+}, \text{Mn}^{2+}$... 3 Edit Delete
18813 $\text{A set of ions among the following that have a } 3d^2 \text{ electronic configuration is:}$ 2 222 Recommended Questions $\text{Ti}^{+}, \text{V}^{4+}, \text{Cr}^{6+}, \text{Mn}^{7+}$, $\text{Ti}^{4+}, \text{V}^{3+}, \text{Cr}^{2+}, \text{Mn}^{3+}$... 3 Edit Delete
18812 $\text{Transition metals and their many compounds act as good catalysts due to:}$ 2 222 Recommended Questions $\text{Variable oxidation states}$, $\text{Unstable intermediate}$... 4 Edit Delete
18811 $\text{Which of the following has the highest spin-only magnetic moment value?}$ 2 222 Recommended Questions $\text{Ti}^{3+}$, $\text{Mn}^{2+}$... 2 Edit Delete
18810 $\text{The correct value of the spin-only magnetic moment of } \text{Cr}^{3+} \text{ ion is equal to:}$ 2 222 Recommended Questions $2.87 \text{ BM}$, $3.87 \text{ BM}$... 2 Edit Delete
18809 $\text{Electronic configuration of a transition element } X \text{ in } +3 \text{ oxidation state is } [\text{Ar}]3d^5. \text{ Atomic number for the element } X \text{ is:}$ 2 222 Recommended Questions $25$, $26$... 2 Edit Delete
18808 $\text{The } +2 \text{ oxidation state becomes more stable in the first half of the first-row transition elements with increasing atomic number because:}$ 2 222 Recommended Questions $\text{s-Orbital is becoming more and more half-filled.}$, $\text{f-Orbital is becoming more and more half-filled.}$... 3 Edit Delete
18807 $\text{Match the following:}$ $\begin{array}{|c|c|} \hline \text{Elements} & \text{Electronic configuration} \\ \hline \text{i. 61} & \text{a. [Rn]}5f^{13}6d^0 7s^2 \\ \text{ii. 91} & \text{b. [Xe]}4f^5 6s^2 \\ \text{iii. 101} & \text{c. [Rn]}5f^{14}6d^7 7s^2 \\ \text{iv. 109} & \text{d. [Rn]} 5f^2 6d^1 7s^2 \\ \hline \end{array}$ 2 222 Recommended Questions $\text{i=b, ii=d, iii=a, iv=c}$, $\text{i=c, ii=a, iii=d, iv=b}$... 1 Edit Delete
18806 $\text{The oxo metal anions of the 3d series in which the metal exhibits an oxidation state equal to its group number is /are -}$ 2 222 Recommended Questions $\text{VO}_3^{-}$, $\text{CrO}_4^{2-}$... 4 Edit Delete
18805 $\text{The number of unpaired electrons in the gaseous ions } \text{Mn}^{3+}, \text{Cr}^{3+}, \text{V}^{3+}, \text{ and } \text{Ti}^{3+} \text{ are, respectively:}$ 2 222 Recommended Questions $3, 2, 3, \text{ and } 1$, $2, 2, 3, \text{ and } 1$... 3 Edit Delete
18804 $\text{Consider the following graph.}$ $\text{Based on the graph above, it can be concluded that the element with a melting point higher than 3000 K will be:}$ 2 222 Recommended Questions $Y$, $X$... 2 Edit Delete
18803 $\text{Match the following characteristics to the appropriate metal:}$ $\begin{array}{|c|c|} \hline \text{Column I - Aspects} & \text{Column II - Metal} \\ \hline \text{(a) The metal which reveals the maximum number of oxidation states} & \text{(i) Scandium} \\ \text{(b) The metal although placed in 3d block is considered not as a transition element} & \text{(ii) Copper} \\ \text{(c) The metal which does not exhibit variable oxidation states} & \text{(iii) Manganese} \\ \text{(d) The metal which in +1 oxidation state in aqueous solution undergoes disproportionation} & \text{(iv) Zinc} \\ \hline \end{array}$ $\text{Select the correct option:}$ 2 222 Recommended Questions $(i)\ (iv)\ (ii)\ (iii)$, $(iii)\ (iv)\ (i)\ (ii)$... 2 Edit Delete
18802 $\text{The calculated spin-only magnetic moment of } \text{Cr}^{2+} \text{ ion is:}$ 2 222 Recommended Questions $4.90 \text{ BM}$, $5.92 \text{ BM}$... 1 Edit Delete
18801 $\text{The transition metals generally form coloured compounds due to:}$ 2 222 Recommended Questions $\text{Absorption of radiation to promote an electron.}$, $\text{Presence of ligands, the d-orbitals split up into two sets of orbitals.}$... 4 Edit Delete
18800 $\text{The correct statement(s) about transition elements are:}$ 2 222 Recommended Questions $+2, \text{ and } +3 \text{ oxidation states are more common for elements in the first transition series, while higher oxidation states are more common for the heavier elements.}$, $\text{The heavier transition elements form low-spin complexes only.}$... 4 Edit Delete
18799 $\text{The number of 3d electrons in the Cr}^{3+} \text{ ions will be:}$ 2 222 Recommended Questions $5$, $6$... 3 Edit Delete
18798 $\text{Colourless ion among the following is:}$ 2 222 Recommended Questions $\text{Cr}^{+4}$, $\text{Sc}^{+3}$... 2 Edit Delete
18797 $\text{The enthalpy of atomization of transition metals is high due to:}$ 2 222 Recommended Questions $\text{High effective nuclear charge}$, $\text{A large number of valence electrons}$... 4 Edit Delete
18796 $\text{What is the correct electronic configuration of Ti (Z = 22 atoms)?}$ 2 222 Recommended Questions $1s^2 2s^2 2p^6 3s^2 3p^6 3d^2$, $1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4p^6$... 4 Edit Delete
18795 $\text{The magnetic moment of an Mn}^{2+} \text{ ion is equal to:}$ 2 222 Recommended Questions $5.92 \text{ BM}$, $2.80 \text{ BM}$... 1 Edit Delete
18794 $\text{The correct statement(s) about transition elements is/are:}$ 2 222 Recommended Questions $\text{The lowest oxide of a transition metal is basic, the highest is amphoteric/acidic.}$, $\text{A transition metal exhibits the highest oxidation state in oxides and fluorides.}$... 4 Edit Delete
18793 $\text{An element that does not show variable oxidation state is:}$ 2 222 Recommended Questions $\text{Fe}$, $\text{Mn}$... 4 Edit Delete
18792 $\text{Match Column I (Catalyst) with Column II (Process), and mark the appropriate option:}$ $\begin{array}{|c|c|} \hline \text{Column I - (Catalyst)} & \text{Column II - (Process)} \\ \hline \text{A. Ni in the presence of hydrogen} & \text{1. Contact process} \\ \text{B. Cu}_2\text{Cl}_2 & \text{2. Vegetable oil to ghee} \\ \text{C. V}_2\text{O}_5 & \text{3. Sandmeyer reaction} \\ \text{D. Finely divided iron} & \text{4. Haber's process} \\ & \text{5. Decomposition of KClO}_3 \\ \hline \end{array}$ 2 222 Recommended Questions $1, 3, 4, 2, 5$, $2, 3, 1, 4$... 2 Edit Delete
18791 $\text{The correct statement(s) regarding the oxidation state of transition elements is/are:}$ $1.\ \text{The oxidation state can vary from } +1 \text{ to } +7$ $2.\ \text{Variable oxidation states are possible.}$ $3.\ \text{Both (1) and (2)}$ $4.\ \text{None of the above}$ 2 222 Recommended Questions $\text{The oxidation state can vary from } +1 \text{ to } +7$, $\text{Variable oxidation states are possible.}$... 3 Edit Delete
18790 $\text{The d-block elements that may not be regarded as transition elements are:}$ 2 222 Recommended Questions $\text{Mn, Fe, Ni because these have partially filled d-subshell.}$, $\text{Mn, Fe, Ni because these have completely filled d-subshell.}$... 3 Edit Delete
18789 $\text{Match the properties given in Column I with uses given in Column II}$ $\begin{array}{|c|c|} \hline \text{Column I-(Property)} & \text{Column II-(Metal)} \\ \hline \text{A. An element that can show +8 oxidation state} & \text{1. Mn} \\ \text{B. 3d block element that can show up to +7} & \text{2. Cr} \\ \text{C. 3d block element with the highest melting point} & \text{3. Os} \\ & \text{4. Fe} \\ \hline \end{array}$ 2 222 Recommended Questions $\begin{array}{ccc} \text{A} & \text{B} & \text{C} \\ 1 & 1 & 2 \\ \end{array}$, $\begin{array}{ccc} \text{A} & \text{B} & \text{C} \\ 2 & 1 & 2 \\ \end{array}$... 1 Edit Delete
18788 $\text{An element among the following that exhibits the maximum oxidation state is:}$ $1. \ \text{Cr}$ $2. \ \text{Mn}$ $3. \ \text{Fe}$ $4. \ \text{V}$ 2 222 Recommended Questions $\text{Cr}$, $\text{Mn}$... 2 Edit Delete
18787 $\text{The correct statement(s) about interstitial compounds is/are:}$ 2 222 Recommended Questions $\text{Transition elements are large in size and contain multiple interstitial sites.}$, $\text{Transition elements can trap atoms of other elements.}$... 4 Edit Delete
18786 $\text{Transition metals show paramagnetic behaviour due to:}$ $1. \text{Paired electrons in the (n-1) d-orbitals}$ $2. \text{Unpaired electrons in the (n-1) d-orbitals}$ $3. \text{Due to } d^{10}, \text{ and } d^0 \text{ configuration}$ $4. \text{None of the above}$ 2 222 Recommended Questions $\text{Paired electrons in the (n-1) d-orbitals}$, $\text{Unpaired electrons in the (n-1) d-orbitals}$... 2 Edit Delete
18785 $\text{Mn}^{2+} \text{ compounds are more stable than } \text{Fe}^{2+} \text{ compounds towards oxidation in their } +3 \text{ state because:}$ 2 222 Recommended Questions $3d^5 \text{ configuration is more stable than } 3d^6 \text{ configuration.}$, $3d^6 \text{ configuration is more stable than } 3d^5 \text{ configuration.}$... 1 Edit Delete
18784 $\text{Which of the following species can act as an oxidising agent?}$ 2 223 Recommended Questions $[\text{Cr} (\text{CO})_6]$, $[\text{Ni} (\text{CO})_4]$... 4 Edit Delete
18783 $\text{A metal ion present in vitamin B}_{12} \text{ is:}$ 2 223 Recommended Questions $\text{Fe(II)}$, $\text{Co(III)}$... 2 Edit Delete
18782 $\text{The correct statement among the following regarding } \text{FeCO}_5 \text{ is:}$ 2 223 Recommended Questions $\text{Tetranuclear}$, $\text{Mononuclear}$... 2 Edit Delete
18781 $\text{The correct order of energies of d-orbitals of metal ions in a square planar complex is:}$ 2 223 Recommended Questions $d_{xy} = d_{yz} = d_{zx} > d_{x^2-y^2} = d_{z^2}$, $d_{x^2-y^2} = d_{z^2} > d_{xy} = d_{yz} = d_{zx}$... 4 Edit Delete
18780 $[\text{CoCl}_2(\text{NH}_3)_4]^+ + \text{Cl}^- \rightarrow [\text{CoCl}_3(\text{NH}_3)_3] + \text{NH}_3$ $\text{If in the above reaction, only one isomer of the product is obtained, then which of the following statement is true for the initial (reactant) complex?}$ 2 223 Recommended Questions $\text{Compound is in cis form.}$, $\text{Compound is in trans form.}$... 2 Edit Delete
18779 $\text{Which of the following complex ions is Bronsted-Lowry acid?}$ 2 223 Recommended Questions $[\text{Cu} (\text{NH}_3)_4]^{2+}$, $[\text{FeCl}_4]^{-}$... 3 Edit Delete
18778 $\text{The complex that does not have a tetrahedral shape is:}$ 2 223 Recommended Questions $[\text{Cu} (\text{NH}_3)_4]^{2+}$, $[\text{Ni} (\text{CO})_4]$... 1 Edit Delete
18777 $\text{Which among the following is incorrect?}$ $\begin{array}{|c|c|} \hline \text{Complex compounds} & \text{Type of hybridization} \\ \hline [\text{V(NH}_3)_6]^{3+} & d^2sp^3 \\ \hline [\text{CrCl}_3(\text{NMe}_3)_3] & d^2sp^3 \\ \hline [\text{Cu(CN)(NO}_2)(\text{NH}_3)(\text{py})] & dsp^2 \\ \hline \text{K}_3[\text{Co(ox)}_3] & sp^3d^2 \\ \hline \end{array}$ 2 223 Recommended Questions $[\text{V(NH}_3)_6]^{3+} \quad d^2sp^3$, $[\text{CrCl}_3(\text{NMe}_3)_3] \quad d^2sp^3$... 4 Edit Delete
18776 $\text{Which of the following complexes has the highest paramagnetic behaviour?}$ $\text{(where gly = glycine, en = ethylenediamine, ox = oxalate ion and bpy = bipyridyl moieties)}$ $\text{(At no : Ti = 22, V = 23, Fe = 26, Co = 27)}$ 2 223 Recommended Questions $[\text{V(gly)}_2(\text{OH})_2(\text{NH}_3)_2]^+$, $[\text{Fe(en)(bpy)(NH}_3)_2]^{2+}$... 3 Edit Delete
18775 $\text{The correct increasing order for the wavelengths of absorption in complexes of Co}^{3+} \text{ is:}$ 2 223 Recommended Questions $[\text{Co(H}_2\text{O)}_6]^{3+} < [\text{Co(en)}_3]^{3+} < [\text{Co(NH}_3)_6]^{3+}$, $[\text{Co(H}_2\text{O)}_6]^{3+} < [\text{Co(NH}_3)_6]^{3+} < [\text{Co(en)}_3]^{3+}$... 4 Edit Delete
18774 $[\text{Fe} (\text{H}_2\text{O})_6]^{2+}$ $\text{and}$ $[\text{Fe} (\text{CN})_6]^{4-}$ $\text{differ in:}$ 2 223 Recommended Questions $\text{Geometry and magnetic moment.}$, $\text{Geometry and hybridization.}$... 3 Edit Delete
18773 $\text{The carbonyl compound with the strongest C-O bond is:}$ 2 223 Recommended Questions $\text{Fe(CO)}_5$, $[\text{Mn(CO)}_6]^+$... 2 Edit Delete
18772 The hybridizations of $[\text{Ni(CO)}_4]$ and $[\text{Cr(H}_2\text{O)}_6]^{3+}$, respectively, are: 2 223 Recommended Questions $\text{sp}^3 \text{ and d}^3\text{sp}^2$, $\text{dsp}^2 \text{ and d}^2\text{sp}^3$... 3 Edit Delete
18771 $\text{A paramagnetic ion among the following, forms an outer orbital complex is:}$ $1.\ [\text{Ni(NH}_3\text{)}_6]^{2+}$ $2.\ [\text{Zn(NH}_3\text{)}_6]^{2+}$ $3.\ [\text{Cr(NH}_3\text{)}_6]^{3+}$ $4.\ [\text{Co(NH}_3\text{)}_6]^{3+}$ 2 223 Recommended Questions $[\text{Ni(NH}_3\text{)}_6]^{2+}$, $[\text{Zn(NH}_3\text{)}_6]^{2+}$... 1 Edit Delete
18770 $\text{Zero magnetic moment of the octahedral complex } \text{K}_2[\text{NiF}_6] \text{ is due to:}$ 2 223 Recommended Questions $\text{Low spin } d^6 \text{ Ni(IV) complex}$, $\text{Low spin } d^8 \text{ Ni(II) complex}$... 1 Edit Delete
18769 $\text{Aqueous solution of Ni}^{2+} \text{ contains } [\text{Ni(H}_2\text{O})_6]^{2+} \text{ and its magnetic moment is } 2.83 \text{ BM. When ammonia is added in it, the magnetic moment of solution:}$ 2 223 Recommended Questions $\text{Will remain the same.}$, $\text{Will increase from 2.83 BM.}$... 1 Edit Delete
18768 $\text{The species having highest magnetic moment is:}$ 2 223 Recommended Questions $\text{K}_4[\text{Fe(CN)}_6]$, $[\text{Fe(H}_2\text{O)}_6]\text{SO}_4$... 2 Edit Delete
18767 $\Delta_{\text{oct}} \text{(CFSE in the octahedral field) will be maximum in:}$ $\text{(Atomic number Co = 27)}$ 2 223 Recommended Questions $[\text{Co} (\text{H}_2\text{O})_6]^{3+}$, $[\text{Co} (\text{NH}_3)_6]^{3+}$... 3 Edit Delete
18766 $\text{The crystal field stabilisation energy for the high spin } d^4 \text{ octahedral complex is:}$ 2 223 Recommended Questions $-1.8 \Delta_o$, $-1.6 \Delta_o$... 4 Edit Delete
18765 $\text{The crystal field stabilization energies (CFSE) of high spin and low spin } d^6 \text{ metal complexes in terms of } \Delta_0, \text{ respectively, are:}$ 2 223 Recommended Questions $-0.4 \text{ and } -2.4$, $-2.4 \text{ and } -0.4$... 1 Edit Delete
18764 $\text{Spin-only magnetic moments of } [\text{Fe(NH}_3\text{)}_6]^{3+} \text{ and } [\text{FeF}_6]^{3-} \text{ in BM are, respectively:}$ 2 223 Recommended Questions $1.73 \text{ and } 1.73$, $5.92 \text{ and } 1.73$... 3 Edit Delete
18763 $\text{The expected number of unpaired electrons for the complex ion } [\text{Cr(NH}_3)_6]^{3+} \text{ are:}$ 2 223 Recommended Questions $2$, $3$... 2 Edit Delete
18762 $\text{The geometry and magnetic behaviour of the complex } [\text{Ni(CO)}_4] \text{ respectively are:}$ 2 223 Recommended Questions $\text{Square planar and diamagnetic.}$, $\text{Tetrahedral and diamagnetic.}$... 2 Edit Delete
18761 $\text{The crystal field stabilization energy (CFSE) for } [\text{CoCl}_6]^{4-} \text{ is } 18000 \text{ cm}^{-1}. \text{ The CFSE for } [\text{CoCl}_4]^{2-} \text{ will be:}$ 2 223 Recommended Questions $6000 \text{ cm}^{-1}$, $16000 \text{ cm}^{-1}$... 4 Edit Delete
18760 $\text{The correct statement among the following is:}$ $1.\ \text{If } \Delta_0 < P, \text{ low spin state is more stable.}$ $2.\ \text{CO is a very weak ligand.}$ $3.\ \text{The colour of a complex depends only on the nature of metal ion.}$ $4.\ \text{CO is a weak base but strong ligand.}$ 2 223 Recommended Questions $\text{If } \Delta_0 < P, \text{ low spin state is more stable.}$, $\text{CO is a very weak ligand.}$... 4 Edit Delete
18759 $\text{A pair that contains both the ions coloured in an aqueous solution is:}$ $\text{(At. no. : Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)}$ 2 223 Recommended Questions $\text{Ni}^{2+}, \text{Ti}^{3+}$, $\text{Sc}^{3+}, \text{Ti}^{3+}$... 1 Edit Delete
18758 $[\text{Cr} (\text{H}_2\text{O})_6]\text{Cl}_3$ $\text{(At. no. of Cr = 24)}$ $\text{has a magnetic moment of 3.83 BM.}$ $\text{What is the correct distribution of 3d electrons in the chromium of the complex:}$ 2 223 Recommended Questions $3d^1_{xy}, 3d^1_{yz}, 3d^1_{z^2}$, $3d^{x^2-y^2}, 3d^1_{z^2}, 3d^1_{xz}$... 4 Edit Delete
18757 $\text{The correct statement, among the following, regarding } [\text{Mn(CN)}_6]^{3-} \text{ is:}$ $1. \text{It is } \text{sp}^3\text{d}^2 \text{ hybridised and octahedral in shape}$ $2. \text{It is } \text{sp}^3\text{d}^2 \text{ hybridised and tetrahedral in shape}$ $3. \text{It is } \text{d}^2\text{sp}^3 \text{ hybridised and octahedral in shape}$ $4. \text{It is } \text{dsp}^2 \text{ hybridised and square planar in shape}$ 2 223 Recommended Questions $\text{It is } \text{sp}^3\text{d}^2 \text{ hybridised and octahedral in shape}$, $\text{It is } \text{sp}^3\text{d}^2 \text{ hybridised and tetrahedral in shape}$... 3 Edit Delete
18756 $\text{A metal ion has } d^6 \text{ configuration. In octahedral complex entity of low spin, the number of electrons present in } e_g \text{ set of orbitals will be}$ 2 223 Recommended Questions $6$, $4$... 3 Edit Delete
18755 $\text{The electronic arrangement of an octahedral complex with a } d^4 \text{ configuration, if } \Delta_0 < \text{ pairing energy is:}$ 2 223 Recommended Questions $t_{2g}^4 e_g^0$, $e_g^4 t_{2g}^0$... 3 Edit Delete
18754 $\text{The d-electron configurations of } \text{Cr}^{2+}, \text{Mn}^{2+}, \text{Fe}^{2+} \text{ and } \text{Co}^{2+} \text{ are } d^4, d^5, d^6, \text{ and } d^7 \text{ respectively. Minimum paramagnetic behavior is shown by:}$ $\text{(At. No C = 24, Mn = 25, Fe = 26, Co = 27)}$ 2 223 Recommended Questions $[\text{Fe(H}_2\text{O)}_6]^{2+}$, $[\text{Co(H}_2\text{O)}_6]^{2+}$... 2 Edit Delete
18753 $\text{The crystal field splitting energy is:}$ 2 223 Recommended Questions $\text{The heat of formation between the two levels (} e_g \text{ and } t_{2g} \text{)}$, $\text{The combined pairing energy of the two levels (} e_g \text{ and } t_{2g} \text{)}$... 4 Edit Delete
18752 $\text{The complex that contains only one unpaired electron is:}$ 2 223 Recommended Questions $[\text{CoF}_6]^{3-}$, $[\text{Co(C}_2\text{O}_4)_3]^{3-}$... 3 Edit Delete
18751 $\text{Complexes with halide ligands are generally:}$ $1. \text{High spin complexes.}$ $2. \text{Low spin complexes.}$ $3. \text{Both high spin and low spin complexes.}$ $4. \text{None of the above.}$ 2 223 Recommended Questions $\text{High spin complexes.}$, $\text{Low spin complexes.}$... 1 Edit Delete
18750 $\text{The correct statement among the following about } [\text{Co(CN)}_6]^{3-} \text{ is:}$ 2 223 Recommended Questions $\text{It has no unpaired electrons and will be in a low-spin configuration}$, $\text{It has four unpaired electrons and will be in a low-spin configuration}$... 1 Edit Delete
18749 $\text{The complex among the following with the highest value of crystal field splitting energy is:}$ 2 223 Recommended Questions $[\text{Fe} (\text{H}_2\text{O})_6]^{+3}$, $[\text{Ru} (\text{CN})_6]^{3-}$... 2 Edit Delete
18748 $\text{Which among the following complexes shows a magnetic moment of 1.73 BM?}$ $1.\ [\text{Ni(CN)}_4]^{2-}$ $2.\ \text{TiCl}_4$ $3.\ [\text{CoCl}_6]^{4-}$ $4.\ [\text{Cu(NH}_3)_4]^{2+}$ 2 223 Recommended Questions $[\text{Ni(CN)}_4]^{2-}$, $\text{TiCl}_4$... 4 Edit Delete
18747 $\text{An ion, among the following, that has a magnetic moment of 2.84 BM is:}$ $\text{(At. no. Ni = 28, Ti = 22, Cr = 24, Co = 27)}$ 2 223 Recommended Questions $\text{Ni}^{2+}$, $\text{Ti}^{3+}$... 1 Edit Delete
18746 $\text{Among the following compounds, the paramagnetic compound with two unpaired electrons is:}$ $1. \text{K}_3[\text{Fe(CN)}_6]$ $2. \text{K}_2[\text{NiCl}_4]$ $3. \text{K}_2[\text{CoCl}_4]$ $4. \text{Na}_2[\text{Ni(CN)}_4]$ 2 223 Recommended Questions $\text{K}_3[\text{Fe(CN)}_6]$, $\text{K}_2[\text{NiCl}_4]$... 2 Edit Delete
18745 $\text{The complex ion among the following that cannot absorb visible light is:}$ 2 223 Recommended Questions $[\text{Ni(CN)}_4]^{2-}$, $[\text{Cr(NH}_3)_6]^{3+}$... 1 Edit Delete
18744 $\text{According to Crystal Field Theory (CFT), the compound, among the following, that forms a colored complex is:}$ 2 223 Recommended Questions $[\text{Ti} (\text{H}_2\text{O})_6]^{4+}$, $[\text{Cr} (\text{NH}_3)_6]^{3+}$... 2 Edit Delete
18743 $\text{The geometry and magnetic properties of } [\text{NiCl}_4]^{2-}, \text{ respectively, are:}$ 2 223 Recommended Questions $\text{Tetrahedral, Paramagnetic}$, $\text{Tetrahedral, Diamagnetic}$... 1 Edit Delete
18742 $\text{For a tetrahedral complex } [\text{MCl}_4]^{2-}, \text{ the spin-only magnetic moment is } 3.83 \text{ B.M. The element M is:}$ 2 223 Recommended Questions $\text{Co}$, $\text{Cu}$... 1 Edit Delete
18741 $\text{The hybridisation of Ni in the complex } [\text{Ni(CN)}_4]^{2-} \text{ is:}$ $\text{(Atomic number of Ni = 28)}$ 2 223 Recommended Questions $\text{dsp}^2$, $\text{sp}^3$... 1 Edit Delete
18740 $\text{The low spin complex among the following is:}$ 2 223 Recommended Questions $\text{Fe(CN)}_6^{3-}$, $\text{Co(NO}_2\text{)}_6^{3-}$... 4 Edit Delete
18739 $\text{The electronic configuration that represents the maximum magnetic moment is:}$ 2 223 Recommended Questions $d^3$, $d^2$... 4 Edit Delete
18738 $\text{The hybridisation of } [\text{FeF}_6]^{3-} \text{ is:}$ 2 223 Recommended Questions $\text{sp}^3\text{d}^2$, $\text{d}^2\text{sp}^3$... 1 Edit Delete
18737 $\text{Of the following complex ions, the diamagnetic complex is:}$ 2 223 Recommended Questions $[\text{Ni(CN)}_4]^{2-}$, $[\text{CuCl}_4]^{2-}$... 1 Edit Delete
18736 $\text{An example of a sigma bonded organometallic compound is:}$ 2 223 Recommended Questions $\text{Ruthenocene}$, $\text{Grignard's reagent}$... 2 Edit Delete
18735 $\text{The correct splitting diagram of d orbitals in an octahedral crystal field is:}$ 2 223 Recommended Questions $\begin{array}{c} \text{d}_{z^2} \quad \text{d}_{x^2-y^2} \\ \hline \text{d}_{xy} \quad \text{d}_{xz} \quad \text{d}_{yz} \end{array}$, $\begin{array}{c} \text{d}_{z^2} \quad \text{d}_{x^2-y^2} \\ \hline \text{d}_{xy} \quad \text{d}_{xz} \end{array}$... 1 Edit Delete
18734 $\text{Which among the following is a diamagnetic complex?}$ 2 223 Recommended Questions $[\text{Ni} \; (\text{CN})_4]^{2-}$, $[\text{CuCl}_4]^{2-}$... 1 Edit Delete
18733 $\text{The correct electronic configuration of the central atom in } \text{K}_4[\text{Fe(CN)}_6] \text{ based on crystal field theory is:}$ 2 223 Recommended Questions $e^4 t_{2g}^2$, $t_{2g}^4 e_{g}^2$... 3 Edit Delete
18732 $[\text{Cr(NH}_3)_6]^{3+}$ \text{ is paramagnetic, while } [\text{Ni(CN)}_4]^{2-} \text{ is diamagnetic because:}$ 2 223 Recommended Questions $\text{Electrons in the 3d orbitals remain unpaired in } [\text{Ni(CN)}_4]^{2-}$, $\text{Electrons in the 3d orbitals remain unpaired in } [\text{Cr(NH}_3)_6]^{3+}$... 2 Edit Delete
18731 $\text{Total geometrical isomers possible for } [\text{Pd}^{2+}(\text{NH}_2-\text{CH(CH}_3)-\text{CO}_2^-)_2]^0 \text{ are -}$ 2 223 Recommended Questions $2$, $3$... 1 Edit Delete
18730 $\text{Isomerism exhibited by } [\text{Co(EDTA)}]^{-} \text{ is/are:}$ 2 223 Recommended Questions $\text{Optical \& geometrical isomerism.}$, $\text{Geometrical isomerism.}$... 3 Edit Delete
18729 $\text{Identify the complex among the following that is not expected to exhibit isomerism:}$ $1. \ [\text{Pt} (\text{NH}_3)_2\text{Cl}_2]$ $2. \ [\text{Ni} (\text{NH}_3)_2\text{Cl}_2]$ $3. \ [\text{Ni} (\text{en})_3]^{2+}$ $4. \ [\text{Ni} (\text{NH}_3)_4(\text{H}_2\text{O})_2]^{2+}$ 2 223 Recommended Questions $[\text{Pt} (\text{NH}_3)_2\text{Cl}_2]$, $[\text{Ni} (\text{NH}_3)_2\text{Cl}_2]$... 2 Edit Delete
18728 $\text{The total number of possible co-ordination isomers for the following compounds are:}$ $[\text{Co (en)}_3][\text{Cr(C}_2\text{O}_4)_3]$ $[\text{Cu(NH}_3)_4][\text{CuCl}_4]$ $[\text{Ni(en)}_3][\text{Co(NO}_2)_6]$ 2 223 Recommended Questions $4, 4, 4$, $2, 2, 2$... 4 Edit Delete
18727 $\text{Which among the following complexes can exhibit isomerism?}$ 2 223 Recommended Questions $[\text{Ag(NH}_3)_2]^+$, $[\text{Co(NH}_3)_5\text{NO}_2]^{2+}$... 2 Edit Delete
18726 The total number of geometrical isomers possible for an octahedral complex of $[\text{MA}_2 \text{B}_2 \text{C}_2]$ are: $(\text{M} = \text{transition metal}; \text{A, B and C are monodentate ligands})$ 2 223 Recommended Questions 3, 4... 3 Edit Delete
18725 $\text{The number of geometrical isomers of } [\text{CrCl}_2(\text{en})(\text{NH}_3)_2] \text{ are:}$ $[\text{en-ethylenediamine}]$ 2 223 Recommended Questions $2$, $3$... 2 Edit Delete
18724 $\text{The total number of possible isomers for the complex } [\text{Co(en)}_2\text{Cl}_2]\text{Cl are:}$ 2 223 Recommended Questions $2$, $1$... 3 Edit Delete
18723 $\text{Number of geometrical isomer(s) possible for the complex } [\text{Cr}(\text{C}_2\text{O}_4)_3]^{3-} \text{ is/are:}$ 2 223 Recommended Questions $1$, $3$... 3 Edit Delete
18722 $\text{The complex that does not exhibit optical isomerism is:}$ $\text{(en-ethylenediamine)}$ 2 223 Recommended Questions $[\text{Co(en)}_2\text{Cl}_2]^+$, $[\text{Co(NH}_3)_3\text{Cl}_3]$... 2 Edit Delete
18721 $\text{Number of possible isomers for the complex } [\text{Co(en)}_2\text{Cl}_2]\text{Cl will be:}$ 2 223 Recommended Questions $1$, $2$... 3 Edit Delete
18720 $\text{The existence of two different coloured complexes with the composition of } [\text{Co} (\text{NH}_3)_4\text{Cl}_2]^+ \text{ is due to:}$ 2 223 Recommended Questions $\text{Linkage isomerism}$, $\text{Geometrical isomerism}$... 2 Edit Delete
18719 $\text{The number of geometrical isomers shown by } [\text{Pt} (\text{Py})(\text{NH}_3)\text{BrCl}] \text{ are:}$ 2 223 Recommended Questions $4$, $0$... 4 Edit Delete
18718 $[\text{Cr}( ext{H}_2 ext{O})_6] ext{Cl}_3$ $\text{and}$ $[\text{Cr}( ext{H}_2 ext{O})_5 ext{Cl}_2] ext{Cl} \cdot ext{H}_2 ext{O}$ $\text{are examples of:}$ 2 223 Recommended Questions $\text{Ionisation isomers}$, $\text{Geometrical isomers}$... 3 Edit Delete
18717 $[\text{Co(NH}_3)_4(\text{NO}_2)_2]\text{Cl}$ \text{ can show:} 2 223 Recommended Questions \text{Linkage isomerism, ionization isomerism and optical isomerism.}, \text{Linkage isomerism, ionization isomerism and geometrical isomerism.}... 2 Edit Delete
18716 $\text{The compound that gives a pair of enantiomorphs is:}$ $\text{(en = NH}_2 \text{CH}_2\text{CH}_2\text{NH}_2\text{)}$ 2 223 Recommended Questions $[\text{Co} (\text{NH}_3)_4\text{Cl}_2] \text{NO}_2$, $[\text{Cr} (\text{NH}_3)_6][\text{Co} (\text{CN})_6]$... 3 Edit Delete
18715 $\text{The ionization isomer of } [\text{Cr(H}_2\text{O})_4\text{Cl(NO}_2)]\text{Cl is:}$ 2 223 Recommended Questions $[\text{Cr(H}_2\text{O})_4(\text{O}_2\text{N})]\text{Cl}_2$, $[\text{Cr(H}_2\text{O})_4\text{Cl}_2](\text{NO}_2)$... 2 Edit Delete
18714 $\text{The type of isomerism shown by the complex } [\text{CoCl}_2(\text{en})_2]^+ \text{ is:}$ 2 223 Recommended Questions $\text{Geometrical isomerism}$, $\text{Coordination isomerism}$... 1 Edit Delete
18713 $\text{The geometry and the number of the unpaired electron(s) of } [\text{MnBr}_4]^{2-}, \text{ respectively, are:}$ 2 223 Recommended Questions $\text{Tetrahedral and 1}$, $\text{Square planar and 1}$... 3 Edit Delete
18712 $\text{Optical isomerism is exhibited by among the following is/are:}$ 2 223 Recommended Questions $[\text{Cr(Ox)}_3]^{3+}$, $[\text{PtCl}_2(\text{en})_2]^{2+}$... 4 Edit Delete
18711 $\text{The complex that can exhibit linkage isomerism is:}$ 2 223 Recommended Questions $[\text{Co} (\text{NH}_3)_5 \text{H}_2\text{O}] \text{Cl}_3$, $[\text{Co} (\text{NH}_3)_5 (\text{NO}_2)] \text{Cl}_2$... 2 Edit Delete
18710 $\text{The complexes } [\text{Co(NH}_3\text{)}_6][\text{Cr(CN)}_6] \text{ and } [\text{Cr(NH}_3\text{)}_6][\text{Co(CN)}_6] \text{ are examples of:}$ 2 223 Recommended Questions $\text{Ionisation isomerism}$, $\text{Coordination isomerism}$... 2 Edit Delete
18709 $\text{The isomerism displayed by } \text{K}_3[\text{Co} (\text{NO}_2)_6] \text{ and } \text{K}_3[\text{Co} (\text{ONO})_6] \text{ is:}$ 2 223 Recommended Questions $\text{Linkage}$, $\text{Co-ordination}$... 1 Edit Delete
18708 $\text{An excess of AgNO}_3 \text{ is added to } 100 \text{ mL of a } 0.01\text{M solution of dichlorotetraaquachromium(III) chloride.}$ $\text{The number of moles of AgCl precipitated would be:}$ 2 223 Recommended Questions $0.002$, $0.003$... 4 Edit Delete
18707 $\text{A solution containing 2.675 g of CoCl}_3\cdot 6\text{NH}_3 \text{ (molar mass = 267.5 g mol}^{-1}\text{) is passed through a cation exchanger. The chloride ions obtained in the solution were treated with an excess of AgNO}_3 \text{ to give 4.78 g of AgCl. Formula of the complex is (Atomic mass of Ag = 108u):}$ 2 223 Recommended Questions $[\text{CoCl(NH}_3)_5]\text{Cl}_2$, $\left[ \text{Co} \left( \text{NH}_3 \right)_6 \right] \text{Cl}_3$... 2 Edit Delete
18706 $\text{A complex has a molecular formula } \text{MSO}_4\text{Cl}\cdot 6\text{H}_2\text{O}. \text{ Its aqueous solution gives white precipitate with barium chloride solution and no precipitate is obtained when it is treated with silver nitrate solution.}$ $\text{If the secondary valence of the metal is six, the correct representation of the complex is:}$ 2 223 Recommended Questions $[\text{M(H}_2\text{O})_4\text{Cl}]\text{SO}_4\cdot 2\text{H}_2\text{O}$, $[\text{M(H}_2\text{O})_6]\text{SO}_4$... 3 Edit Delete
18705 $\text{When 0.1 mol of CoCl}_3(\text{NH}_3)_5 \text{ is treated with an excess of AgNO}_3, 0.2 \text{ mol of AgCl is obtained. The conductivity of the solution will correspond to:}$ 2 223 Recommended Questions $1:3 \text{ electrolyte}$, $1:2 \text{ electrolyte}$... 2 Edit Delete
18704 $\text{If an excess of } \text{AgNO}_3 \text{ solution is added to } 100 \text{ mL of a } 0.024 \text{ M solution of dichlorobis (ethylenediamine) cobalt (III) chloride, then the number of moles of AgCl that will be precipitated is:}$ 2 223 Recommended Questions $0.0012$, $0.0016$... 3 Edit Delete
18703 $\text{The correct order of the stoichiometrics of AgCl formed when AgNO}_3 \text{ in excess is treated with the complexes:}$ $\text{CoCl}_3 \cdot 6\text{NH}_3, \text{CoCl}_3 \cdot 5\text{NH}_3, \text{CoCl}_3 \cdot 4\text{NH}_3,$ $\text{respectively, is:}$ 2 223 Recommended Questions $1 \text{ AgCl}, 3 \text{ AgCl}, 2 \text{ AgCl}$, $3 \text{ AgCl}, 1 \text{ AgCl}, 2 \text{ AgCl}$... 3 Edit Delete
18702 $\text{Which of the following statements about ammonium cerium (IV) nitrate, } (\text{NH}_4)_2[\text{Ce} (\text{NO}_3)_6] \text{ is incorrect?}$ 2 223 Recommended Questions $\text{NO}_3^- \text{ acts as a monodentate ligand.}$, $\text{The Ce atom has a coordination number of 12.}$... 1 Edit Delete
18701 $\text{The correct order of increasing field strength of ligands is:}$ 2 223 Recommended Questions $\text{SCN}^- < \text{F}^- < \text{CN}^- < \text{C}_2\text{O}_4^{2-}$, $\text{F}^- < \text{SCN}^- < \text{C}_2\text{O}_4^{2-} < \text{CN}^-$... 4 Edit Delete
18700 $\text{The correct statements about ethane-1,2-diamine as a ligand are:}$ $\begin{array}{ll} (a) & \text{It is a neutral ligand} \\ (b) & \text{It is a bidentate ligand} \\ (c) & \text{It is a chelating ligand} \\ (d) & \text{It is a unidentate ligand} \end{array}$ 2 223 Recommended Questions $\text{a, b and b}$, $\text{b and c}$... 3 Edit Delete
18699 $\text{The incorrect option among the following is:}$ 2 223 Recommended Questions $[\text{Co(NO}_2)(\text{H}_2\text{O})(\text{en})_2]\text{Cl}_2, [\text{CoCl(NO}_2)(\text{en})_2]\text{Cl} \cdot \text{H}_2\text{O}$ \text{Hydrate isomerism}, $[\text{Cu(NH}_3)_4][\text{PtCl}_4], [\text{CuCl(NH}_3)_3][\text{PtCl}_3(\text{NH}_3)]$ \text{Co-ordination isomerism}... 4 Edit Delete
18698 $\text{A complex ion among the following can absorb visible light is:}$ $\text{(At. no. Zn = 30, Sc = 21, Ti = 22, Cr = 24)}$ 2 223 Recommended Questions $[\text{Sc} (\text{H}_2\text{O})_3 (\text{NH}_3)_3]^{3+}$, $[\text{Ti} (\text{en})_2 (\text{NH}_3)_2]^{4+}$... 3 Edit Delete
18697 $\text{Among the following species, the one that is not expected to be a ligand is:}$ 2 223 Recommended Questions $\text{NO}$, $\text{NH}_4^+$... 2 Edit Delete
18696 $\text{The denticity of EDTA is:}$ 2 223 Recommended Questions $\text{Monodentate}$, $\text{Hexadentate}$... 2 Edit Delete
18695 $\text{Among the following, the compound that has the maximum coordination number is/are:}$ $1. [\text{Co(NH}_3\text{)}_6]^{3+}$ $2. [\text{Cr(C}_2\text{O}_4\text{)}_3]^{3-}$ $3. [\text{CoCl}_3(\text{H}_2\text{O})_3]$ $4. \text{All of the above have the same coordination number}$ 2 223 Recommended Questions $[\text{Co(NH}_3\text{)}_6]^{3+}$, $[\text{Cr(C}_2\text{O}_4\text{)}_3]^{3-}$... 4 Edit Delete
18694 $\text{The species that cannot act as an ambidentate ligand is:}$ 2 223 Recommended Questions $\text{CN}^-$, $\text{NO}_2^-$... 4 Edit Delete
18693 $\text{Correct IUPAC name for } \text{H}_2[\text{PtCl}_6] \text{ is:}$ 2 223 Recommended Questions $\text{Hydrogen hexachloroplatinate(IV)}$, $\text{Dihydrogen hexachloroplatinate(IV)}$... 4 Edit Delete
18692 $\text{A solution of CuCl in NH}_4\text{OH is used to measure the amount of gas by simply measuring change in volume. The gas is}$ 2 223 Recommended Questions $\text{CO}_2$, $\text{H}_2$... 4 Edit Delete
18691 $\text{Given the following pair of isomers:}$ $[\text{Cr} (\text{NH}_3)_6][\text{Cr} (\text{NO}_2)_6]$ $\text{and}$ $[\text{Cr} (\text{NH}_3)_4(\text{NO}_2)_2][\text{Cr} (\text{NH}_3)_2(\text{NO}_2)_4]$ $\text{Aside from X-ray diffraction, how could the following pairs of isomers be distinguished from one another?}$ 2 223 Recommended Questions $\text{Cryoscopic method}$, $\text{Measuring their molar conductance}$... 2 Edit Delete
18690 $\text{Total number of optical isomers } [\text{Pt} (\text{NH}_3)(\text{Br})(\text{Cl})(\text{py})] \text{ can show:}$ 2 223 Recommended Questions $3$, $2$... 4 Edit Delete
18689 $\text{The chemical formula for tris(ethane-1,2-diamine)iron(II) phosphate is:}$ 2 223 Recommended Questions $[\text{Fe} (\text{CH}_3-\text{CH} (\text{NH}_2)_2)_3] (\text{PO}_4)_3$, $[\text{Fe} (\text{H}_2\text{N-CH}_2-\text{CH}_2-\text{NH}_2)_3] (\text{PO}_4)$... 4 Edit Delete
18688 $\text{The correct IUPAC name among the following is:}$ 2 223 Recommended Questions $\text{Tris(acetylacetonato)iron(III) chloride}$, $\text{Hexachloroplatinum(IV) tetraamminedicyanoplatinate(IV)}$... 3 Edit Delete
18687 $\text{When an excess of aqueous KCN is added to an aqueous solution of copper sulphate, what coordination entity is formed?}$ 2 223 Recommended Questions $\text{K}_2[\text{Cu(CN)}_6]$, $\text{K}_3[\text{Cu(CN)}_4]$... 2 Edit Delete
18686 $\text{The correct IUPAC name for } [\text{Pt} (\text{en})_2 \text{Cl(ONO)}]^{2+} \text{ is:}$ 2 223 Recommended Questions $\text{Chlorodiethylenediaminenitritoplatinum(IV) ion}$, $\text{Bis(ethylenediamine)chloronitro-O-platinum(IV) ion}$... 3 Edit Delete
18685 $\text{Aqueous copper sulphate solution gives a green precipitate of A with aqueous potassium fluoride. What would be the correct molecular formula of A?}$ 2 223 Recommended Questions $[\text{CuF}_6]^{3-}$, $[\text{CuF}_4]^{2-}$... 2 Edit Delete
18684 $\text{The correct IUPAC name for } \text{Mn}_3(\text{CO})_{12} \text{ is:}$ 2 223 Recommended Questions $\text{Dodecacarbonylmanganate(0)}$, $\text{Dodecacarbonylmanganate(II)}$... 3 Edit Delete
18683 $\text{The IUPAC name of } [\text{Co(ONO)(NH}_3)_5]\text{Cl}_2 \text{ is:}$ 2 223 Recommended Questions $\text{Pentaamminenitro-O-cobalt(II)chloride}$, $\text{Pentaamminenitroso-O-cobalt(III)chloride}$... 3 Edit Delete
18682 $2.335 \text{ g of compound } X \text{ (empirical formula } \text{CoH}_{12}\text{N}_4\text{Cl}_3) \text{ upon treatment with excess } \text{AgNO}_3 \text{ solution produces } 1.435 \text{ g of a white precipitate. The primary and secondary valences of cobalt in compound } X, \text{ respectively are:}$ $[\text{Given Atomic mass: Co = 59, Cl = 35.5, Ag = 108}]$ 2 223 Recommended Questions $3, 6$, $3, 4$... 1 Edit Delete
18681 $\text{The sum of the coordination number and oxidation number of the metal M in the complex } [\text{M(en)}_2(\text{C}_2\text{O}_4)]\text{Cl is:}$ 2 223 Recommended Questions $9$, $6$... 1 Edit Delete
18680 $\text{The coordination number and oxidation number of Co in the complex}$ $\text{(NH}_4\text{)}_2[\text{CoF}_4] \text{ are:}$ 2 223 Recommended Questions $+2, 4$, $4, +2$... 2 Edit Delete
18679 $\text{The species that are colourless:}$ $\text{(Z of Ti = 22, Co = 27, Cu = 29, Ni = 28)}$ 2 223 Recommended Questions $\text{TiF}_6^{2-} \text{ and CoF}_6^{3-}$, $\text{Cu}_2\text{Cl}_2 \text{ and NiCl}_4^{2-}$... 3 Edit Delete
18678 $\text{Two complexes, PtCl}_4 \cdot 2 \text{NH}_3 \text{ and PtCl}_4 \cdot 2 \text{KCl, do not give a precipitate of AgCl when treated with AgNO}_3. \text{ They give zero and three moles of ions, respectively, in solutions for one mole of the complex. The structural formulae of both complexes are:}$ 2 223 Recommended Questions $[\text{PtCl}_2 (\text{NH}_3)_2] \text{Cl}_2 \text{ and K}_2[\text{PtCl}_6]$, $[\text{PtCl}_4 (\text{NH}_3)_2] \text{ and K}_2[\text{PtCl}_2 (\text{NH}_3)_2]$... 3 Edit Delete
18677 $\text{The IUPAC name for complex ion, } [\text{Fe(CN)}_6]^{3-} \text{ is:}$ 2 223 Recommended Questions $\text{Hexacyanoiron(III) ion}$, $\text{Hexacyanitoferrate(III) ion}$... 4 Edit Delete
18676 The IUPAC name of $[\text{Cr(en)}_3]\text{Cl}_3$ is: 2 223 Recommended Questions $\text{Triethylenediaminechromium (III) chloride}$, $\text{Tris(ethylenediamine)chromium (II) chloride}$... 3 Edit Delete
18675 $\text{The hypothetical complex chlorodiaquatetraamminecobalt(III) chloride can be represented as:}$ 2 223 Recommended Questions $[\text{CoCl} (\text{NH}_3)_3 (\text{H}_2\text{O})_2] \text{Cl}_2$, $[\text{Co} (\text{NH}_3)_3 (\text{H}_2\text{O})\text{Cl}]_3$... 1 Edit Delete
18674 $\text{The complex } [\text{Pt (NH}_3)_2\text{Cl(NH}_2\text{CH}_3)]\text{Cl correct IUPAC name is:}$ 2 223 Recommended Questions $\text{Diamminechlorido(methylamine)platinum(II)chloride}$, $\text{Diamminechloro(aminomethyl)platinum(II)chlorido}$... 1 Edit Delete
18673 $\text{Cobalt(III) chloride forms several octahedral complexes with ammonia.}$ $\text{A compound among the following that does not give a test for chloride ions}$ $\text{with silver nitrate at 25 } ^\circ \text{C is:}$ 2 223 Recommended Questions $\text{CoCl}_3 \cdot 3\text{NH}_3$, $\text{CoCl}_3 \cdot 4\text{NH}_3$... 1 Edit Delete
18672 $\text{IUPAC name of } [\text{Pt} (\text{NH}_3)_3 (\text{Br})(\text{NO}_2)\text{Cl}]\text{Cl is:}$ 2 223 Recommended Questions $\text{Triamminebromidochloridonitroplatinum(IV)Chloride}$, $\text{Triamminebromonitrochloroplatinum(IV)Chloride}$... 1 Edit Delete
18671 $\text{If } \frac{1}{3} \text{ of the total chlorine of the compound is precipitated by adding } \text{AgNO}_3 \text{ to its aqueous solution, then the most likely structure of } \text{CrCl}_3 \cdot 6\text{H}_2\text{O} \text{ among the following is:}$ 2 223 Recommended Questions $\text{CrCl}_3 \cdot 6\text{H}_2\text{O}$, $[\text{Cr(H}_2\text{O})_3\text{Cl}_3](\text{H}_2\text{O})_3$... 3 Edit Delete
18670 $\text{A solution of } [\text{Ni(H}_2\text{O)}_6]^{2+} \text{ is green, but a solution of } [\text{Ni(CN)}_4]^{2-} \text{ is colorless because:}$ 2 223 Recommended Questions $\text{There are paired electrons in } [\text{Ni(H}_2\text{O)}_6]^{2+} \text{ while all electrons are unpaired in } [\text{Ni(CN)}_4]^{2-}$, $\text{There are unpaired electrons in } [\text{Ni(H}_2\text{O)}_6]^{2+} \text{ while all electrons are paired in } [\text{Ni(CN)}_4]^{2-}$... 2 Edit Delete
18669 $\text{The complex that is used as an anticancer agent is:}$ 2 223 Recommended Questions $\text{mer-}[\text{Co} (\text{NH}_3)_3\text{Cl}_3]$, $\text{cis-}[\text{PtCl}_2(\text{NH}_3)_2]$... 2 Edit Delete
18668 2 2 223 Recommended Questions 1, 2... 2 Edit Delete
18667 $\text{The correct representation of tetrahydroxidozincate (II) is:}$ 2 223 Recommended Questions $[\text{Zn(OH)}_4]^{2-}$, $[\text{Zn(OH)}_4]^{-}$... 1 Edit Delete
18666 121 2 222 N/A 1, 2... 3 Edit Delete
18665 120 2 222 N/A 1, 2... 1 Edit Delete
18664 119 2 222 N/A 1, 2... 1 Edit Delete
18663 118 2 222 N/A 1, 2... 1 Edit Delete
18662 117 2 222 N/A 1, 2... 4 Edit Delete
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18655 110 2 222 N/A 1, 2... 1 Edit Delete
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18653 108 2 222 N/A 1, 2... 1 Edit Delete
18652 107 2 222 N/A 1, 2... 2 Edit Delete
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18650 105 2 222 N/A 1, 2... 1 Edit Delete
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18635 90 2 222 N/A 1, 2... 2 Edit Delete
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18629 84 2 222 N/A 1, 2... 1 Edit Delete
18628 83 2 222 N/A 1, 2... 1 Edit Delete
18627 82 2 222 N/A 1, 2... 4 Edit Delete
18626 81 2 222 N/A 1, 2... 1 Edit Delete
18625 80 2 222 N/A 1, 2... 4 Edit Delete
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18623 78 2 222 N/A 1, 2... 3 Edit Delete
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18618 73 2 222 N/A 1, 2... 4 Edit Delete
18617 72 2 222 N/A 1, 2... 2 Edit Delete
18616 71 2 222 N/A 1, 2... 4 Edit Delete
18615 70 2 222 N/A 1, 2... 2 Edit Delete
18614 69 2 222 N/A 1, 2... 2 Edit Delete
18613 68 2 222 N/A 1, 2... 1 Edit Delete
18612 67 2 222 N/A 1, 2... 4 Edit Delete
18611 66 2 222 N/A 1, 2... 4 Edit Delete
18610 65 2 222 N/A 1, 2... 1 Edit Delete
18609 64 2 222 N/A 1, 2... 2 Edit Delete
18608 63 2 222 N/A 1, 2... 1 Edit Delete
18607 62 2 222 N/A 1, 2... 4 Edit Delete
18606 61 2 222 N/A 1, 2... 4 Edit Delete
18605 60 2 222 N/A 1, 2... 2 Edit Delete
18604 59 2 222 N/A 1, 2... 1 Edit Delete
18603 58 2 222 N/A 1, 2... 1 Edit Delete
18602 57 2 222 N/A 1, 2... 1 Edit Delete
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18599 54 2 222 N/A 1, 2... 3 Edit Delete
18598 53 2 222 N/A 1, 2... 1 Edit Delete
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18595 50 2 222 N/A 1, 2... 1 Edit Delete
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18570 25 2 222 N/A 1, 2... 2 Edit Delete
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18556 11 2 222 N/A 1, 2... 1 Edit Delete
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18553 8 2 222 N/A 1, 2... 2 Edit Delete
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18551 6 2 222 N/A 1, 2... 3 Edit Delete
18550 5 2 222 N/A 1, 2... 1 Edit Delete
18549 4 2 222 N/A 1, 2... 2 Edit Delete
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18547 2 2 222 N/A 1, 2... 2 Edit Delete
18546 1 2 222 N/A 1, 2... 1 Edit Delete
18545 $\text{The main reactions that occur in the blast furnace during iron extraction from hematite are:}$ $\text{a. } \text{Fe}_2\text{O}_3 + 3\text{CO} \rightarrow 2\text{Fe} + 3\text{CO}_2$ $\text{b. } \text{FeO} + \text{SiO}_2 \rightarrow \text{FeSiO}_3$ $\text{c. } \text{Fe}_2\text{O}_3 + 3\text{C} \rightarrow 2\text{Fe} + 3\text{CO}$ $\text{d. } \text{CaO} + \text{SiO}_2 \rightarrow \text{CaSiO}_3$ $\text{Choose the correct option:}$ $1. \text{ a and b}$ $2. \text{ b and c}$ $3. \text{ c and d}$ $4. \text{ a and d}$ 2 220 Recommended Questions $\text{a and b}$, $\text{b and c}$... 4 Edit Delete
18544 $\text{An electrochemical process is used to extract:}$ 2 220 Recommended Questions $\text{Iron}$, $\text{Lead}$... 3 Edit Delete
18543 $\text{The process of bringing the metal ore into solution by the action of a suitable chemical reagent followed by extraction of the metal either by electrolysis or by a suitable precipitating agent is called-}$ $1. \text{Electrometallurgy}$ $2. \text{Hydrometallurgy}$ $3. \text{Electrorefining}$ $4. \text{Zone refining}$ 2 220 Recommended Questions $\text{Electrometallurgy}$, $\text{Hydrometallurgy}$... 2 Edit Delete
18542 $\text{What does copper matte contain?}$ 2 220 Recommended Questions $\text{Sulphides of copper(I), and iron(II)}$, $\text{Sulphides of copper (II), and iron(III)}$... 1 Edit Delete
18541 $\text{In the metallurgy of aluminium:}$ 2 220 Recommended Questions $\text{Al}^{3+} \text{ is oxidised to Al(s).}$, $\text{The graphite anode is oxidised to carbon monoxide and carbon dioxide.}$... 2 Edit Delete
18540 $\text{In the froth flotation process, how can zinc sulphide and lead sulphide be separated?}$ $\text{a. Using collectors.}$ $\text{b. Adjusting the proportion of oil to water.}$ $\text{c. Using depressants.}$ $\text{d. Using froth stabilizers.}$ $\text{Choose the correct option:}$ 2 220 Recommended Questions $(a, b)$, $(b, c)$... 2 Edit Delete
18539 $\text{Iron is extracted from chalcopyrite as:}$ 2 220 Recommended Questions $\text{FeO}$, $\text{FeS}$... 4 Edit Delete
18538 $\text{The iron ore that is used to line the reverberatory furnace to prepare the purest form of iron is-}$ 2 220 Recommended Questions $\text{Haematite}$, $\text{FeO}$... 1 Edit Delete
18537 $2 ext{MS} + 3 ext{O}_2 \rightarrow 2 ext{MO} + 2 ext{SO}_2$ $2 ext{MO} + ext{MS} \rightarrow 3 ext{M} + ext{SO}_2$ $\text{The metal M in above-mentioned reaction is:}$ 2 220 Recommended Questions $\text{Mg}$, $\text{Pb}$... 2 Edit Delete
18536 $\text{Consider the following reactions at } 1000 \ ^\circ\text{C.}$ $\text{(I) ZnS + } \frac{1}{2}\text{O}_2\text{(g)} \xrightarrow{\Delta} \text{ZnO(g)}; \ \Delta G^\circ = -360 \ \text{kJ mol}^{-1}$ $\text{(II) Cs + } \frac{1}{2}\text{O}_2\text{(g)} \xrightarrow{\Delta} \text{CO(g)}; \ \Delta G^\circ = -460 \ \text{kJ mol}^{-1}$ $\text{Choose the correct statement about the above reactions at } 1000 \ ^\circ\text{C:}$ 2 220 Recommended Questions $\text{ZnO is more stable than CO}$, $\text{ZnO can be reduced to Zn by C}$... 2 Edit Delete
18535 $\text{Consider the following metallurgical process:}$ $\text{Sulfide} \xrightarrow{\Delta} \text{oxide} \xrightarrow{\Delta} \text{Impure metal} \rightarrow \text{pure metal}$ $\text{The processes A, B, and C in the above mentioned reaction are, respectively:}$ 2 220 Recommended Questions $\text{Calcination, smelting, and electrolysis}$, $\text{Roasting, smelting, and electrolysis}$... 2 Edit Delete
18534 $\text{What happens in the extraction of chlorine by electrolysis of brine?}$ $1.\ \text{Oxidation of } \text{Cl}^- \text{ ion to chlorine gas occurs.}$ $2.\ \text{Reduction of } \text{Cl}^- \text{ ion to chlorine gas occurs.}$ $3.\ \text{For overall reaction } \Delta G^\circ \text{ has negative value.}$ $4.\ \text{A displacement reaction takes place.}$ 2 220 Recommended Questions $\text{Oxidation of } \text{Cl}^- \text{ ion to chlorine gas occurs.}$, $\text{Reduction of } \text{Cl}^- \text{ ion to chlorine gas occurs.}$... 1 Edit Delete
18533 $\text{The correct match among the following is:}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{(a) Boron} & \text{(i) Van Arkel method} \\ \text{(b) Tin} & \text{(ii) Mond's process} \\ \text{(c) Zirconium} & \text{(iii) Liquation} \\ \text{(d) Nickel} & \text{(iv) Zone refining} \\ \hline \end{array}$ 2 220 Recommended Questions $\begin{array}{cccc} (a) & (b) & (c) & (d) \\ (i) & (iii) & (iv) & (ii) \end{array}$, $\begin{array}{cccc} (a) & (b) & (c) & (d) \\ (ii) & (iii) & (i) & (iv) \end{array}$... 1 Edit Delete
18532 $\text{Which of the following metals can be purified by electrolytic refining?}$ 2 220 Recommended Questions $\text{Cu, and Zn}$, $\text{Ge, and Si}$... 1 Edit Delete
18531 $\text{The common impurities present in bauxite are:}$ $\text{a. CuO}$ $\text{b. ZnO}$ $\text{c. Fe}_2\text{O}_3$ $\text{d. SiO}_2$ $\text{Choose the correct option:}$ $\text{1. a and b}$ $\text{2. b and c}$ $\text{3. c and d}$ $\text{4. a and d}$ 2 220 Recommended Questions $\text{a and b}$, $\text{b and c}$... 3 Edit Delete
18530 $\text{Brine is electrolysed by using inert electrodes. The reaction at the anode is:}$ $1. \ \text{Cl}^- (\text{aq}) \rightarrow \frac{1}{2} \text{Cl}_2(\text{g}) + e^-; \ E^\circ_{\text{cell}} = 1.36 \ \text{V}$ $2. \ \text{2H}_2\text{O}(\text{l}) \rightarrow \text{O}_2(\text{g}) + 4\text{H}^+ + 4e^-; \ E^\circ_{\text{cell}} = 1.23 \ \text{V}$ $3. \ \text{Na}^+(\text{aq}) + e^- \rightarrow \text{Na(s)}; \ E^\circ_{\text{cell}} = 2.71 \ \text{V}$ $4. \ \text{H}^+(\text{aq}) + e^- \rightarrow \frac{1}{2} \text{H}_2(\text{g}); \ E^\circ_{\text{cell}} = 0.00 \ \text{V}$ 2 220 Recommended Questions $\text{Cl}^- (\text{aq}) \rightarrow \frac{1}{2} \text{Cl}_2(\text{g}) + e^-; \ E^\circ_{\text{cell}} = 1.36 \ \text{V}$, $\text{2H}_2\text{O}(\text{l}) \rightarrow \text{O}_2(\text{g}) + 4\text{H}^+ + 4e^-; \ E^\circ_{\text{cell}} = 1.23 \ \text{V}$... 1 Edit Delete
18529 $\text{Aluminium is extracted from alumina } \text{Al}_2\text{O}_3 \text{ by electrolysis of a molten mixture of:}$ 2 220 Recommended Questions $\text{Al}_2\text{O}_3 + \text{HF} + \text{NaAlF}_4$, $\text{Al}_2\text{O}_3 + \text{CaF}_2 + \text{NaAlF}_4$... 3 Edit Delete
18528 $\text{In the extraction of aluminium by the Hall-Heroult process, purified } \text{Al}_2 \text{O}_3 \text{ is mixed with } \text{CaF}_2 \text{ to:}$ $\text{a. Lower the melting point of } \text{Al}_2 \text{O}_3$ $\text{b. Increase the conductivity of the molten mixture.}$ $\text{c. Reduce } \text{Al}^{3+} \text{ into } \text{Al(s)}$ $\text{d. Act as a catalyst}$ $\text{Choose the correct option:}$ $\text{1. a and b}$ $\text{2. b and c}$ $\text{3. c and d}$ $\text{4. a and d}$ 2 220 Recommended Questions $\text{a and b}$, $\text{b and c}$... 1 Edit Delete
18527 $\text{A major impurity in pig iron is:}$ 2 220 Recommended Questions $\text{Carbon}$, $\text{Silicon}$... 1 Edit Delete
18526 $\text{The extraction of gold and silver involves leaching with } \text{CN}^- \text{ ion. Silver is later recovered by:}$ 2 220 Recommended Questions $\text{Liquation}$, $\text{Distillation}$... 4 Edit Delete
18525 $4 ext{M} + 8 ext{CN}^- + 2 ext{H}_2 ext{O} + ext{O}_2 \rightarrow 4[ ext{M(CN)}_2]^- + 4 ext{OH}^-$ $2[ ext{M(CN)}_2]^- + ext{Zn} \rightarrow [ ext{Zn(CN)}_4]^{2-} + 2 ext{M}$ $\text{The metal M in above-mentioned reaction is:}$ 2 220 Recommended Questions $\text{Nickel}$, $\text{Silver}$... 2 Edit Delete
18524 $\text{A pair of metals among the following that can be purified by the van Arkel method are:}$ 2 220 Recommended Questions $\text{Zr, and Ti}$, $\text{Ag, and Au}$... 1 Edit Delete
18523 $\text{(i)} \text{Zr} + 2\text{I}_2 \xrightarrow{870\text{K}} \text{ZrI}_4 \xrightarrow{2075\text{K}} \text{Zr} + 2\text{I}_2$ $\text{(ii)} \text{Ni} + 4\text{CO} \xrightarrow{330\text{K}} \text{Ni(CO)}_4 \xrightarrow{450\text{K}} \text{Ni}_{(\text{pure})} + 4\text{CO}$ $\text{The processes (ii) and (i) above, respectively, are:}$ 2 220 Recommended Questions $\text{Mond's process; Van Arkel process}$, $\text{Van Arkel process; Mond's process}$... 2 Edit Delete
18522 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): The zone refining method is very useful for producing semiconductors.}$ $\text{Reason (R): Semiconductors are of high purity.}$ 2 220 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
18521 $\text{Which metal can be purified by zone refining?}$ 2 220 Recommended Questions $\text{Ni}$, $\text{Zr}$... 3 Edit Delete
18520 $\text{The correct statement among the following is:}$ $1. \text{Blister copper has a blistered appearance due to the evolution of } \text{CO}_2.$ $2. \text{Vapour phase refining is carried out for nickel by the Van Arkel method.}$ $3. \text{Pig iron can be moulded into a variety of shapes.}$ $4. \text{Wrought iron is impure iron with 4 \% carbon.}$ 2 220 Recommended Questions $\text{Blister copper has a blistered appearance due to the evolution of } \text{CO}_2.$, $\text{Vapour phase refining is carried out for nickel by the Van Arkel method.}$... 3 Edit Delete
18519 $\text{From the following, the correct statements about the role of substances added}$ $\text{in the froth flotation process are:}$ $\text{a. Collectors enhance the non-wettability of the mineral particles.}$ $\text{b. Collectors enhance the wettability of gangue particles.}$ $\text{c. By using depressants in the process, two sulphide ores can be separated.}$ $\text{d. Froth stabilisers decrease the wettability of gangue.}$ 2 220 Recommended Questions $\text{a and b}$, $\text{b and c}$... 4 Edit Delete
18518 $\text{In the process of extraction of silver,}$ $\text{silver ore} + \text{CN}^- + \text{H}_2\text{O} + \text{O}_2 \rightarrow [\text{X}] + \text{OH}^-$ $[\text{X}] + \text{Zn} \rightarrow [\text{Y}] + \text{Ag}$ $[\text{X}], \text{and} [\text{Y}] \text{ in the above mentioned reaction are:}$ 2 220 Recommended Questions $\text{X} = [\text{Ag(CN)}_2]^- ; \text{Y} = [\text{Zn(CN)}_4]^{2-}$, $\text{X} = [\text{Ag(CN)}_2]^{3-} ; \text{Y} = [\text{Zn(CN)}_4]^{2-}$... 1 Edit Delete
18517 $\text{Select the correct option based on the statements below:}$ $\text{Assertion (A): Zirconium can be purified by the van Arkel method.}$ $\text{Reason (R): ZrI}_4 \text{ is volatile and decomposes at 1800 K.}$ 2 220 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18516 $\text{During the process of electrolytic refining of copper, metals that are present as impurities and settle as anode mud are:}$ 2 220 Recommended Questions $\text{Ag, and Au}$, $\text{Pb, and Zn}$... 1 Edit Delete
18515 $\text{Match the items in Column I with the items in Column II, and assign the correct code.}$ $\text{Column I}$ \quad \text{Column II}$ $\text{A. Cyanide process}$ \quad \text{1. Ultrapure Ge}$ $\text{B. Froth flotation process}$ \quad \text{2. Dressing of ZnS}$ $\text{C. Electrolytic reduction}$ \quad \text{3. Extraction of Al}$ $\text{D. Zone refining}$ \quad \text{4. Extraction of Au}$ $\quad \text{5. Purification of Ni}$ $\text{Codes}$ 2 220 Recommended Questions $1. \ 4 \ 2 \ 3 \ 1$, $2. \ 2 \ 3 \ 1 \ 5$... 1 Edit Delete
18514 $\text{Which of the following statement is correct?}$ $\begin{array}{l} \text{1. Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast.} \\ \text{2. In the extraction of silver, silver is extracted as a cationic complex.} \\ \text{3. Nickel is purified by zone refining.} \\ \text{4. Zr, and Ti are purified by the van Arkel method.} \end{array}$ 2 220 Recommended Questions $(a, b)$, $(b, c)$... 4 Edit Delete
18513 $\text{The method of purification that is represented by the following equation is:}$ $\text{Ti}(s) + 2\text{I}_2(g) \xrightarrow{523\ K} \text{TiI}_4(g)$ $\text{TiI}_4(g) \xrightarrow{1700\ K} \text{Ti}(s) + 2\text{I}_2(g)$ 2 220 Recommended Questions $\text{Cupellation}$, $\text{Poling}$... 3 Edit Delete
18512 $\text{Match the items in Column I with the items in Column II and assign the correct code.}$ $\text{Column I}$ $\text{A. Coloured Bands}$ $\text{B. Impure metal to volatile complex}$ $\text{C. Purification of Ge and Si}$ $\text{D. Purification of mercury}$ $\text{Column II}$ $1. \text{Zone refining}$ $2. \text{Fractional distillation}$ $3. \text{Mond's process}$ $4. \text{Chromatography}$ $5. \text{Liquation}$ $\text{Codes}$ $\begin{array}{cccc} \text{A} & \text{B} & \text{C} & \text{D} \\ 1. & 1 & 2 & 3 & 4 \\ 2. & 4 & 3 & 1 & 2 \\ 3. & 3 & 4 & 2 & 1 \\ 4. & 5 & 4 & 3 & 2 \end{array}$ 2 220 Recommended Questions $1 \ (3\%)$, $2 \ (93\%)$... 2 Edit Delete
18511 $\text{The temperature at which carbon reduce FeO to Fe and produce CO is:}$ 2 220 Recommended Questions $\text{Lower than 400 } ^\circ \text{C}$, $400 ^\circ \text{C}$... 4 Edit Delete
18510 $\text{The correct statement for the reduction of FeO at the temperature corresponding to point D is:}$ 2 220 Recommended Questions $\Delta G \text{ value for the overall reduction reaction with carbon monoxide is zero.}$, $\Delta G \text{ value for the overall reduction reaction with a mixture of 1 mol carbon, and 1 mol oxygen is positive.}$... 1 Edit Delete
18509 $\text{Zinc cannot be extracted from zinc oxide via CO reduction because:}$ $\text{(Given: Ellingham diagram)}$ 2 220 Recommended Questions $\Delta G_f^\circ \text{ of Zn from ZnO is lower than that of CO}_2 \text{ from CO}$, $\Delta G_f^\circ \text{ of ZnO from Zn is lower than that of CO}_2 \text{ from CO}$... 2 Edit Delete
18508 $\text{The correct statement among the following regarding the reaction of FeO below point A in the above diagram is:}$ 2 220 Recommended Questions $\text{Reduced by carbon monoxide only.}$, $\text{Reduced by both carbon monoxide and carbon.}$... 1 Edit Delete
18507 $\text{The better reducing agent for ZnO is:}$ 2 220 Recommended Questions $\text{C}$, $\text{CO}$... 1 Edit Delete
18506 $\text{At 1400 } ^\circ \text{C, the } \Delta G_r^\circ \text{ value for the reaction } 2\text{FeO} + 2\text{C} \rightarrow 2\text{Fe} + 2\text{CO} \text{ is}$ 2 220 Recommended Questions $-116 \text{ kJ mol}^{-1}$, $-106 \text{ kJ mol}^{-1}$... 2 Edit Delete
18505 $\text{Which of the following has a negative slope?}$ 2 220 Recommended Questions $\text{C} \rightarrow \text{CO}$, $\text{Fe} \rightarrow \text{Fe}_2\text{O}_3$... 1 Edit Delete
18504 $\text{Al can reduce MgO under the following conditions:}$ 2 220 Recommended Questions $\text{Above 500 } ^\circ \text{C, Al can reduce MgO}$, $\text{Below 500 } ^\circ \text{C, Al can reduce MgO}$... 4 Edit Delete
18503 $\text{The correct statement among the following is:}$ $\text{1. The rate of reaction cannot be understood from the Ellingham diagram.}$ $\text{2. During the formation of metal oxide } \Delta S' \text{ becomes negative and } \Delta G \text{ becomes positive resulting in a positive slope.}$ $\text{3. There is an abrupt change in the slope of the Ellingham line when a change in phase (s} \rightarrow \text{l) or (l} \rightarrow \text{g) takes place.}$ $\text{4. All of the above.}$ 2 220 Recommended Questions $\text{The rate of reaction cannot be understood from the Ellingham diagram.}$, $\text{During the formation of metal oxide } \Delta S' \text{ becomes negative and } \Delta G \text{ becomes positive resulting in a positive slope.}$... 4 Edit Delete
18502 $\text{A metal's oxide that can be reduced by Fe as a reducing agent at a temperature } T_1 \text{ is:}$ 2 220 Recommended Questions $\text{Zr}$, $\text{Ca}$... 1 Edit Delete
18501 $\text{Ellingham's diagram for the formation of } \text{CO}_2 \text{ is a straight line in the given graph. This is due to:}$ $\begin{array}{c} c(s) + \text{o}_2(g) \rightarrow \text{CO}_2(g) \\ \Delta G^\circ \\ T(K) \end{array}$ 2 220 Recommended Questions $\text{Increase in entropy during } \text{CO}_2 \text{ formation.}$, $\text{Decrease in entropy during } \text{CO}_2 \text{ formation.}$... 3 Edit Delete
18500 $\text{The correct statement among the following is:}$ 2 220 Recommended Questions $\text{In the decomposition of oxide into oxygen and gaseous metal, entropy increases.}$, $\text{Decomposition of oxide is an endothermic change.}$... 4 Edit Delete
18499 $\text{Consider the Ellingham diagram given below.}$ $\text{The Y-axis, and X-axis in the graph are respectively:}$ 2 220 Recommended Questions $\text{Gibbs energy (}\Delta G_r^\circ\text{), and Pressure}$, $\text{Gibbs energy (}\Delta G_r^\circ\text{), and temperature}$... 2 Edit Delete
18498 $\text{The thermodynamic property useful for selecting the reducing agent is:}$ 2 220 Recommended Questions $\text{Gibbs free energy change.}$, $\text{Internal energy change.}$... 1 Edit Delete
18497 $\text{1. Ellingham diagram.}$ $\text{2. Orgel diagram.}$ $\text{3. Tunabo-Sugano diagram.}$ $\text{4. Born-Haber cycle.}$ 2 220 Recommended Questions $\text{Ellingham diagram.}$, $\text{Orgel diagram.}$... 1 Edit Delete
18496 $\text{Incorrect statement for the Hall-Heroult process is:}$ 2 220 Recommended Questions $\text{Cryolite } \text{Na}_3\text{AlF}_6 \text{ lower the melting point of } \text{Al}_2\text{O}_3, \text{ and increase its electrical conductivity.}$, $\text{Al is obtained at the cathode, and CO}_2 \text{ at the anode.}$... 4 Edit Delete
18495 $\text{What is the composition of the anode mud used in the electrolytic refining of silver?}$ 2 220 Recommended Questions $\text{Zn, Cu, Ag, Au}$, $\text{Zn, Ag, Au}$... 4 Edit Delete
18494 $\text{Why is roasting important in the iron metallurgy process?}$ 2 220 Recommended Questions $\text{FeO gets oxidized to Fe}_2\text{O}_3 \text{ which does not combine with acidic SiO}_2$, $\text{SiO}_2 \text{ is an acidic oxide which can combine with metallic oxides i.e. FeO, and Fe}_2\text{O}_3$... 1 Edit Delete
18493 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Hydrometallurgy involves dissolving the ore in a suitable reagent followed by precipitation by a more electropositive metal.}$ $\text{Reason (R): Copper is extracted by hydrometallurgy.}$ 2 220 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
18492 $\text{Which of the following ores can be reduced by carbon?}$ $\text{a. Haematite}$ $\text{b. Zincite}$ $\text{c. Iron pyrites}$ $\text{d. Sphalerite}$ $\text{Choose the correct option:}$ 2 220 Recommended Questions $\text{a and b}$, $\text{b and c}$... 1 Edit Delete
18491 $\text{Among the following a non-oxide ore is:}$ $1. \text{ Malachite}$ $2. \text{ Cuprite}$ $3. \text{ Zincite}$ $4. \text{ Bauxite}$ 2 220 Recommended Questions $\text{Malachite}$, $\text{Cuprite}$... 1 Edit Delete
18490 $\text{What method is used to extract zinc from zinc blende?}$ 2 220 Recommended Questions $\text{Electrolytic reduction}$, $\text{Roasting followed by reduction with carbon}$... 2 Edit Delete
18489 $\text{NaCN is a depressant that is used:}$ 2 220 Recommended Questions $\text{To Separate PbS from ZnS by forming a complex with PbS.}$, $\text{To Separate PbS from ZnS by forming a complex with ZnS.}$... 2 Edit Delete
18488 $\text{Native silver metal forms a water-soluble complex with a dilute aqueous solution of NaCN in the presence of:}$ 2 220 Recommended Questions $\text{Nitrogen}$, $\text{Oxygen}$... 2 Edit Delete
18487 $\text{During extraction, copper is obtained by the reduction of cupric oxide with:}$ 2 220 Recommended Questions $\text{Cu}_2\text{S}$, $\text{SO}_2$... 1 Edit Delete
18486 $\text{Which of the following is an incorrect match?}$ $1.\ \text{Kaolinite} - \text{Al}_2(\text{OH})_4\text{Si}_2\text{O}_5$ $2.\ \text{Cuprite} - \text{Cu}_2\text{O}$ $3.\ \text{Siderite} - \text{FeCO}_3$ $4.\ \text{Calamine} - \text{ZnSO}_4$ 2 220 Recommended Questions $\text{Kaolinite} - \text{Al}_2(\text{OH})_4\text{Si}_2\text{O}_5$, $\text{Cuprite} - \text{Cu}_2\text{O}$... 4 Edit Delete
18485 $\text{The substance that acts as a collector in the froth flotation method is:}$ 2 220 Recommended Questions $\text{Sodium xenate.}$, $\text{Sodium pyrophosphate.}$... 4 Edit Delete
18484 $\text{Reactions among the following that occur during calcination are:}$ $\begin{array}{l} \text{a. } \text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2 \\ \text{b. } 2\text{FeS}_2 + \frac{11}{2} \text{O}_2 \rightarrow \text{Fe}_2\text{O}_3 + \text{SO}_2 \\ \text{c. } \text{Al}_2\text{O}_3\cdot\text{xH}_2\text{O} \rightarrow \text{Al}_2\text{O}_3 + \text{xH}_2\text{O} \\ \text{d. } \text{ZnS} + \frac{3}{2} \text{O}_2 \rightarrow \text{ZnO} + \text{SO}_2 \end{array}$ $\text{Choose the correct option:}$ $\text{1. a and b}$ $\text{2. b and c}$ $\text{3. c and d}$ $\text{4. a and c}$ 2 220 Recommended Questions $\text{a and b}$, $\text{b and c}$... 4 Edit Delete
18483 $\text{Consider the following reaction.}$ $\text{Bauxite ore} + \text{NaOH (conc.)} \xrightarrow{\text{Digester} \ \Delta} (\text{A})_{\text{Soluble}}$ $\text{(A)} \xrightarrow{\text{Fresh Al(OH)}_3} (\text{B})_{\text{White}} + (\text{C})$ $\text{(B)} \xrightarrow{\Delta} (\text{D}) + \text{H}_2\text{O}$ $\text{What is the molecular formula of compound D?}$ 2 220 Recommended Questions $\text{NaAlO}_2$, $\text{Al(OH)}_3$... 3 Edit Delete
18482 $\text{The chemical composition of "slag" formed during the smelting process in the extraction of copper is:}$ 2 220 Recommended Questions $\text{Cu}_2 + \text{FeS}$, $\text{FeSiO}_3$... 2 Edit Delete
18481 $\text{Which are the most abundant elements present inside the earth's crust?}$ 2 220 Recommended Questions $\text{Al, and Fe}$, $\text{Al, and Cu}$... 1 Edit Delete
18480 $\text{The fundamental principle of froth flotation process is:}$ 2 220 Recommended Questions $\text{Impurities and metal ore have different wetting properties.}$, $\text{Impurities and metal ore have different solubility.}$... 1 Edit Delete
18479 $\text{From the following, the ores that are concentrated by froth flotation are:}$ $\begin{array}{ll} \text{a. Haematite} & \text{b. Galena} \\ \text{c. Copper pyrites} & \text{d. Magnetite} \end{array}$ $\text{Choose the correct option:}$ 2 220 Recommended Questions $\text{a and b}$, $\text{b and c}$... 2 Edit Delete
18478 $\text{Roasting of sulphides gives the gas 'X' as a by-product. This is a colourless gas}$ $\text{with the choking smell of burnt sulphur and causes great damage to}$ $\text{respiratory organs as a result of acid rain. Its aqueous solution is acidic, acts}$ $\text{as an oxidising agent, and its acid has never been isolated. The gas 'X' is:}$ 2 220 Recommended Questions $\text{SO}_2$, $\text{CO}_2$... 1 Edit Delete
18477 $\text{Among the following an iron mineral is:}$ 2 220 Recommended Questions $\text{Malachite}$, $\text{Cassiterite}$... 4 Edit Delete
18476 $\text{Match the items in Column I with the items in Column II and assign the correct code.}$ $\text{Column I}$ \quad \text{Column II}$ $\text{A. Pendulum}$ \quad \text{1. Chrome steel}$ $\text{B. Malachite}$ \quad \text{2. Nickel Steel}$ $\text{C. Calamine}$ \quad \text{3. Na}_3\text{AlF}_6$ $\text{D. Cryolite}$ \quad \text{4. CuCO}_3 \cdot \text{Cu (OH)}_2$ $\quad \quad \quad \quad \text{5. ZnCO}_3$ 2 220 Recommended Questions $1 \quad 2 \quad 3 \quad 4$, $2 \quad 4 \quad 5 \quad 3$... 2 Edit Delete
18475 $\text{The active species in Zeigler-Natta polymerisation of ethylene is:}$ 2 219 Recommended Questions $\text{AlCl}_3$, $\text{Et}_3\text{Al}$... 4 Edit Delete
18474 $\text{A small amount of phosphoric acid can be used to prevent } \text{H}_2\text{O}_2 \text{ decomposition. This an example of?}$ 2 219 Recommended Questions $\text{Neutralization}$, $\text{Negative catalysis}$... 2 Edit Delete
18473 $\text{The compound that acts as an inhibitor for knocking in the combustion of petrol is:}$ 2 219 Recommended Questions $(\text{C}_2\text{H}_5)_4\text{Pb}$, $\text{Ni(CO)}_4$... 3 Edit Delete
18472 $\text{KClO}_3$ $\text{on heating decomposes into}$ $\text{KCl and O}_2.$ $\text{If some MnO}_2$ $\text{is added, the reaction goes much faster because:}$ $1. \text{MnO}_2 \text{ decomposes to give oxygen.}$ $2. \text{MnO}_2 \text{ provides heat by reacting.}$ $3. \text{Better contact is provided by MnO}_2$ $4. \text{MnO}_2 \text{ acts as a catalyst.}$ 2 219 Recommended Questions $\text{MnO}_2 \text{ decomposes to give oxygen.}$, $\text{MnO}_2 \text{ provides heat by reacting.}$... 4 Edit Delete
18471 $\text{Heterogeneous catalysis is shown in:}$ 2 219 Recommended Questions $2\text{SO}_2(g) + \text{O}_2(g) \xrightarrow{\text{Pt}(s)} 2\text{SO}_3(g)$, $4\text{NH}_3(g) + 3\text{H}_2(g) \xrightarrow{\text{Fe}(s)} 2\text{NH}_3(g)$... 4 Edit Delete
18470 $\text{Which one of the following statements about enzyme catalysis is incorrect?}$ 2 219 Recommended Questions $\text{Enzymes are mostly proteinous in nature.}$, $\text{Enzyme action is specific.}$... 4 Edit Delete
18469 $\text{Shape selective catalysis is:}$ 2 219 Recommended Questions $\text{Catalytic reaction depends upon the pore structure of the catalyst.}$, $\text{Catalytic reactions depend on the size of the reactant and the product molecules.}$... 3 Edit Delete
18468 $\text{Enzymes are:}$ $1. \text{Biochemical catalysts.}$ $2. \text{Protein molecules of high molecular masses.}$ $3. \text{Both (1) and (2)}$ $4. \text{None of the above.}$ 2 219 Recommended Questions $\text{Biochemical catalysts.}$, $\text{Protein molecules of high molecular masses.}$... 3 Edit Delete
18467 $\text{Among the following surfactant molecules, the surfactant with the lowest CMC}$ $\text{in aqueous solution at ambient conditions is:}$ 2 219 Recommended Questions $\text{CH}_3(\text{CH}_2)_{15}\text{N}^+(\text{CH}_3)_3\text{Br}^-$, $\text{CH}_3(\text{CH}_2)_{11}\text{OSO}_3^-\ \text{Na}^+$... 1 Edit Delete
18466 $\text{Milk can be preserved by adding a few drops of?}$ 2 219 Recommended Questions $\text{Formic acid solution}$, $\text{Formaldehyde solution}$... 2 Edit Delete
18465 $\text{The charge present on micelles is:}$ $1.\ \text{Negative charge.}$ $2.\ \text{Positive charge.}$ $3.\ \text{Both negative and positive charges.}$ $4.\ \text{None of the above.}$ 2 219 Recommended Questions $\text{Negative charge.}$, $\text{Positive charge.}$... 3 Edit Delete
18464 $\text{An emulsion is stabilised by:}$ 2 219 Recommended Questions $\text{Emulsifiers.}$, $\text{Peptizing agent.}$... 1 Edit Delete
18463 $\text{Match the items in Column I and Column II.}$ $\text{Column I}$ \quad \text{Column II}$ $\text{A. Dialysis} \quad \text{1. Cleansing action of soap}$ $\text{B. Peptization} \quad \text{2. Coagulation}$ $\text{C. Emulsification} \quad \text{3. Colloidal sol formation}$ $\text{D. Electrophoresis} \quad \text{4. Purification}$ $\text{Codes}$ 2 219 Recommended Questions $\text{A. 2} \quad \text{B. 3} \quad \text{C. 4} \quad \text{D. 1}$, $\text{A. 1} \quad \text{B. 2} \quad \text{C. 3} \quad \text{D. 4}$... 4 Edit Delete
18462 $\text{Correct statement about emulsion is:}$ 2 219 Recommended Questions $\text{The dispersed phase and dispersion medium are liquids.}$, $\text{The dispersed phase and dispersion medium are solids.}$... 1 Edit Delete
18461 $\text{Emulsions can be used as:}$ $1.\ \text{For cleansing action of soaps.}$ $2.\ \text{For digestion of fats in the intestines.}$ $3.\ \text{As antiseptics and disinfectants.}$ $4.\ \text{All of the above.}$ 2 219 Recommended Questions $\text{For cleansing action of soaps.}$, $\text{For digestion of fats in the intestines.}$... 4 Edit Delete
18460 $\text{Match the items given in Column I and Column II.}$ $\text{Column I}$ \quad \text{Column II}$ $\text{A. Protective colloid} \quad 1. \text{FeCl}_3 + \text{NaOH}}$ $\text{B. Liquid-liquid colloid} \quad 2. \text{Lyophilic colloids}}$ $\text{C. Positively charged colloid} \quad 3. \text{Emulsion}}$ $\text{D. Negatively charged colloid} \quad 4. \text{FeCl}_3 + \text{hot water}}$ $\text{Codes}$ 2 219 Recommended Questions $1. \quad 3 \quad 2 \quad 4 \quad 1$, $2. \quad 1 \quad 4 \quad 3 \quad 2$... 3 Edit Delete
18459 $\text{Match the types of colloidal systems given in Column I with the names given in Column II.}$ $\text{Column I}$ $\text{A. Solid in Liquid}$ $\text{B. Liquid in Solid}$ $\text{C. Liquid in Liquid}$ $\text{D. Gas in Liquid}$ $\text{Column II}$ $1. \text{Foam}$ $2. \text{Sol}$ $3. \text{Gel}$ $4. \text{Emulsion}$ $\text{Codes}$ 2 219 Recommended Questions $1. \ 2 \ 3 \ 4 \ 1$, $2. \ 1 \ 3 \ 4$... 1 Edit Delete
18458 $\text{The correct statements about micelles are:}$ 2 219 Recommended Questions $\text{Formed by substances such as soaps and detergents when dissolved in water.}$, $\text{Substances whose molecules contain a hydrophobic and a hydrophilic part.}$... 4 Edit Delete
18457 $\text{What is a solution that isn't a lyophilic colloid?}$ 2 219 Recommended Questions $\text{Milk}$, $\text{Gum}$... 3 Edit Delete
18456 $\text{The surface tension of lyophilic sols is:}$ 2 219 Recommended Questions $\text{Lower than } \text{H}_2\text{O}$, $\text{More than } \text{H}_2\text{O}$... 1 Edit Delete
18455 $\text{Hydrophobic sols are easily coagulated as?}$ 2 219 Recommended Questions $\text{The particles present in them come closer and form aggregates, leading to precipitation.}$, $\text{The particles present in them move farther and form aggregates, which leads to precipitation.}$... 1 Edit Delete
18454 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): One part of micelles is lyophilic in nature.}$ $\text{Reason (R): Micelles have a lyophillic COO group.}$ 2 219 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18453 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): A hydrophilic sol is more stable than a hydrophobic sol.}$ $\text{Reason (R): When compared to hydrophobic sol, colloidal particles in hydrophilic sol are heavily hydrated.}$ 2 219 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18452 $\text{The index for the Gold number is:}$ 2 219 Recommended Questions $\text{Protective power of lyophilic colloid.}$, $\text{Purity of gold.}$... 1 Edit Delete
18451 $\text{A colloid of AgI is formed by mixing AgNO}_3 \text{ with an excess of KI. The electrolyte with the greatest coagulation value for it is:}$ 2 219 Recommended Questions $\text{BaSO}_4$, $\text{NaCl}$... 4 Edit Delete
18450 $\text{What happens during electro-osmosis of } \text{Fe(OH)}_3 \text{ sol?}$ 2 219 Recommended Questions $\text{Sol particles move towards the anode.}$, $\text{Sol particles move towards the cathode of a sol.}$... 4 Edit Delete
18449 $\text{Which of the following statement about multi-molecular colloid is incorrect?}$ 2 219 Recommended Questions $\text{They have a diameter of less than 1 nm.}$, $\text{When these particles are dissolved in a liquid, they form sol.}$... 4 Edit Delete
18448 $\text{What is a colloidal solution that is commonly used to treat skin diseases?}$ 2 219 Recommended Questions $\text{Colloidal sulphur.}$, $\text{Colloidal silver.}$... 1 Edit Delete
18447 $\text{In adding 1 mL of solution of 10 \% NaCl to 10 mL of gold solution in the presence of 0.25 g of starch, the coagulation is just prevented. Starch has a gold number equal to:}$ 2 219 Recommended Questions $0.25$, $2.5$... 3 Edit Delete
18446 $\text{What does blood contain?}$ 2 219 Recommended Questions $\text{Positively charged particles.}$, $\text{Negatively charged particles.}$... 2 Edit Delete
18445 $\text{What is the most effective electrolyte for precipitating } \text{Fe(OH)}_3 \text{ sol?}$ 2 219 Recommended Questions $\text{NaCl}$, $\text{BaSO}_4$... 4 Edit Delete
18444 $10 \text{ mg starch protected } 5 \text{ mL gold sol in } 1 \text{ mL } 2\% \text{ NaCl solution. The gold number of starch is:}$ 2 219 Recommended Questions $20$, $40$... 4 Edit Delete
18443 $\text{What is the simultaneous outcome of internal liquid from gels called?}$ 2 219 Recommended Questions $\text{Synerisis}$, $\text{Thixotropy}$... 1 Edit Delete
18442 $\text{Silver iodide is used for producing artificial rain because AgI is:}$ $1. \text{ Easy to spray at high altitudes.}$ $2. \text{ Easy to synthesize.}$ $3. \text{ Having crystal structure similar to ice.}$ $4. \text{ Insoluble in water.}$ 2 219 Recommended Questions $\text{Easy to spray at high altitudes.}$, $\text{Easy to synthesize.}$... 3 Edit Delete
18441 $1 \text{ mol of } [\text{AgI}]^- \text{ can be coagulated by -}$ $1. \text{ 1 mol of } \text{Pb(NO}_3)_2$ $2. \frac{1}{2} \text{ mol of } \text{Pb(NO}_3)_2$ $3. \frac{2}{3} \text{ mol of } \text{Pb(NO}_3)_2$ $4. \text{ None of the above.}$ 2 219 Recommended Questions $1 \text{ mol of } \text{Pb(NO}_3)_2$, $\frac{1}{2} \text{ mol of } \text{Pb(NO}_3)_2$... 2 Edit Delete
18440 $\text{Incorrect statement regarding colloids is:}$ 2 219 Recommended Questions $\text{When the size of the solute particle lies between 1 nm and 1000 nm, it behaves as a colloid.}$, $\text{A colloid is not a substance but a state of the substance that is dependent on the charge of the particle.}$... 2 Edit Delete
18439 $\text{Brownian movement is caused by:}$ 2 219 Recommended Questions $\text{Colloidal solution.}$, $\text{True solution.}$... 1 Edit Delete
18438 $\text{Peptization is the process of?}$ 2 219 Recommended Questions $\text{Precipitating colloidal particles.}$, $\text{Purifying colloidal particles.}$... 3 Edit Delete
18437 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles.}$ $\text{Reason (R): The pore size of the filter paper becomes larger than the size of the colloidal particle.}$ 2 219 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
18436 $\text{What does the name "aquadag" refer to?}$ 2 219 Recommended Questions $\text{Cu in water sol.}$, $\text{Pt in water sol.}$... 3 Edit Delete
18435 $\text{Brownian motion of colloidal particles is caused by:}$ 2 219 Recommended Questions $\text{Temperature fluctuations within the liquid phase.}$, $\text{Attraction and repulsion between charges on the colloidal particles.}$... 3 Edit Delete
18434 $\text{Which mixture of the solutions will lead to the formation of a negatively charged colloidal [AgI]I}^{-} \text{ sol?}$ 2 219 Recommended Questions $50 \text{ mL of } 0.1 \text{ M AgNO}_3 + 50 \text{ mL of } 0.1 \text{ M KI}$, $50 \text{ mL of } 1 \text{ M AgNO}_3 + 50 \text{ mL of } 0.5 \text{ M KI}$... 3 Edit Delete
18433 $\text{Which is the electrolyte that is least effective in causing coagulation of +ve ferric hydroxide sol?}$ 2 219 Recommended Questions $\text{KBr}$, $\text{K}_2\text{SO}_4$... 1 Edit Delete
18432 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Detergents with low CMC are more economical to use.}$ $\text{Reason (R): The cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.}$ 2 219 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18431 $\text{Match the statement given in Column I with the phenomenon given in Column II.}$ $\text{Column I}$ \newline \text{A. Dispersion medium moves in an electric field} \newline \text{B. Solvent molecules pass through a semi-permeable membrane towards the solvent side} \newline \text{C. Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes} \newline \text{D. Solvent molecules pass through semi-permeable membranes towards the solution side} \newline \text{Codes}$ 2 219 Recommended Questions $1.\ 2\ 3\ 4$, $2.\ 1\ 2\ 3\ 4$... 3 Edit Delete
18430 $\text{Which one of the following is the correct option?}$ 2 219 Recommended Questions $\text{Solid sol - Smoke}$, $\text{Emulsion - butter}$... 2 Edit Delete
18429 $\text{Among the given options, which element is the minimum required for}$ $\text{precipitation of a negatively charged suspension of clay in water?}$ 2 219 Recommended Questions $\text{Aluminium chloride.}$, $\text{Potassium sulphate.}$... 1 Edit Delete
18428 $\text{How can alum help in water purification?}$ 2 219 Recommended Questions $\text{Forming Si complex with clay particles.}$, $\text{The sulphate part, which combines with the dirt and removes it.}$... 3 Edit Delete
18427 $\text{The method of formation of the solution is given in Column I. Match it with the type of solution given in Column II.}$ $\text{Column I}$ $\text{(A) Sulphur vapours passed through cold water}$ $\text{(B) Soap mixed with water above critical micelle concentration}$ $\text{(C) White of egg whipped with water}$ $\text{(D) Soap mixed with water below critical micelle concentration}$ $\text{Column II}$ $1. \text{Normal electrolyte solution}$ $2. \text{Molecular colloids}$ $3. \text{Associated colloid}$ $4. \text{Macromolecular colloids}$ $\text{Codes}$ 2 219 Recommended Questions $1. \ 2 \ 3 \ 4$, $1. \ 2 \ 4 \ 3$... 1 Edit Delete
18426 $\text{What results are obtained from adding } \text{FeCl}_3 \text{ to } \text{K}_4[\text{Fe(CN)}_6] \text{ in a diluted, cold solution?}$ 2 219 Recommended Questions $\text{Prussian blue sol.}$, $\text{Fe}_4[\text{Fe(CN)}_6]_3 \text{ sol.}$... 4 Edit Delete
18425 $\text{Measuring Zeta potential is useful in determining which of the following property of a colloidal solution:}$ $\text{1. Solubility.}$ $\text{2. Stability of the colloidal particles.}$ $\text{3. Size of the colloidal particles.}$ $\text{4. Viscosity.}$ 2 219 Recommended Questions $\text{Solubility.}$, $\text{Stability of the colloidal particles.}$... 2 Edit Delete
18424 $\text{The coagulating power of an ion depends on:}$ $1. \text{The magnitude of the charge on the ion alone}$ $2. \text{Size of the ion alone}$ $3. \text{Both magnitude and sign of the charge on the ion.}$ $4. \text{The sign of the charge on the ion alone.}$ 2 219 Recommended Questions $\text{The magnitude of the charge on the ion alone}$, $\text{Size of the ion alone}$... 3 Edit Delete
18423 $\text{The correct match amongst the following is -}$ $\begin{array}{|c|c|} \hline \text{Physical states of the dispersed phase and dispersion medium} & \text{Type of colloid} \\ \hline \text{a. D.P = solid; D.M = liquid} & \text{i. Foam} \\ \text{b. D.P = solid; D.M = gas} & \text{ii. Emulsion} \\ \text{c. D.P = liquid; D.M = liquid} & \text{iii. Aerosol} \\ \text{d. D.P = gas; D.M = liquid} & \text{iv. Sol} \\ \hline \end{array}$ $(\text{D.P = dispersed phase, and D.M = dispersion medium})$ 2 219 Recommended Questions $\begin{array}{|c|c|c|c|} \hline \text{a} & \text{b} & \text{c} & \text{d} \\ \hline \text{iv} & \text{iii} & \text{ii} & \text{i} \\ \hline \end{array}$, $\begin{array}{|c|c|c|c|} \hline \text{a} & \text{b} & \text{c} & \text{d} \\ \hline \text{iii} & \text{iv} & \text{i} & \text{ii} \\ \hline \end{array}$... 1 Edit Delete
18422 $\text{The charge on } \text{As}_2\text{S}_3 \text{ sol is caused by the adsorption of:}$ 2 219 Recommended Questions $\text{H}^+$, $\text{OH}^-$... 4 Edit Delete
18421 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Colloidal solutions do not show Brownian motion.}$ $\text{Reason (R): Brownian motion is responsible for the stability of sols.}$ 2 219 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 4 Edit Delete
18420 $\text{Fog is a } \underline{\hspace{1cm}} \text{ type of colloidal solution:}$ 2 219 Recommended Questions $\text{Gas in liquid.}$, $\text{Solid in gas.}$... 4 Edit Delete
18419 $\text{How is the flocculation value expressed?}$ 2 219 Recommended Questions $\text{Millimole per litre.}$, $\text{Mole per litre.}$... 1 Edit Delete
18418 $\text{The coagulation values in millimoles per litre of the electrolytes used for the coagulation of } \text{As}_2\text{S}_3 \text{ are given below}$ $\text{I. (NaCl) = 52, II. (BeCl}_2\text{) = 0.69, III. (MgSO}_4\text{) = 0.22}$ $\text{What is the correct order of their coagulating power?}$ 2 219 Recommended Questions $\text{I > II > III}$, $\text{II > I > III}$... 3 Edit Delete
18417 $\text{Cloud bursts are caused by?}$ 2 219 Recommended Questions $\text{Attraction towards the electrical charges on the earth.}$, $\text{Large amount of water present in the cloud.}$... 4 Edit Delete
18416 $\text{Which of the following statement about collodion is correct?}$ 2 219 Recommended Questions $4\% \text{ solution of nitro-cellulose in a mixture of ethyl alcohol and ether.}$, $14\% \text{ solution nitrate in a mixture of ether and ethanol.}$... 1 Edit Delete
18415 $\text{Which of the following electrolytes, } \text{Na}_2\text{SO}_4, \text{CaCl}_2, \text{Al}_2(\text{SO}_4)_3, \text{ and NH}_4\text{Cl, is the most effective coagulating agent for Sb}_2\text{S}_3 \text{ sol?}$ 2 219 Recommended Questions $\text{Na}_2\text{SO}_4$, $\text{CaCl}_2$... 3 Edit Delete
18414 $\text{The coagulating power of electrolytes with ions } \text{Na}^+, \text{ Al}^{3+}, \text{ and } \text{Ba}^{2+} \text{ rise for arsenic sulphide sol increases in the order:}$ 2 219 Recommended Questions $\text{Al}^{3+} < \text{Ba}^{2+} < \text{Na}^+$, $\text{Na}^+ < \text{Ba}^{2+} < \text{Al}^{3+}$... 2 Edit Delete
18413 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): The coagulation power of Al}^{3+} \text{ is more than Na}^{+}. $ $\text{Reason (R): Greater the valency of the flocculating ion added, the greater is its power to cause precipitation (Hardy-Schulze rule)}$ 2 219 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18412 $\text{Colloids can be classified on the basis of:}$ 2 219 Recommended Questions $\text{Physical states of components.}$, $\text{Nature of dispersed phase.}$... 4 Edit Delete
18411 $\text{The phenomenon of the scattering of light by a colloidal solution known as:}$ 2 219 Recommended Questions $\text{Zeeman effect.}$, $\text{Tyndall effect.}$... 2 Edit Delete
18410 $\text{In an adsorption experiment, a graph between } \log(x/m) \text{ versus } \log P \text{ was found to be linear with a slope of } 45^\circ. \text{ The intercept on the y-axis was found to be } 0.3. \text{ What will be the value of } x/m \text{ at a pressure of } 3 \text{ atm for the Freundlich adsorption isotherm when } 1/n \text{ remains constant?}$ $[\text{Antilog } 0.3 = 2]$ 2 219 Recommended Questions $2$, $4$... 3 Edit Delete
18409 $\text{According to Freundlich adsorption isotherm, at high pressure, the value of } \frac{x}{m} \text{ is -}$ 2 219 Recommended Questions $\text{Directly proportional to the pressure.}$, $\text{Inversely proportional to the pressure.}$... 4 Edit Delete
18408 $\text{Consider the following graph between } \frac{x}{m} \text{ (extent of adsorption) and pressure:}$ $\text{What is the correct relation between } T_1, T_2, \text{ and } T_3?$ 2 219 Recommended Questions $T_3 < T_2 > T_1$, $T_1 < T_2 < T_3$... 3 Edit Delete
18407 $\text{The correct curve for Freundlich's adsorption isotherm is:}$ 2 219 Recommended Questions $\log \frac{x}{m}$ $\text{ vs }$ $\log p$ $\text{ (concave curve)}$, $\log \frac{x}{m}$ $\text{ vs }$ $\log p$ $\text{ (convex curve)}$... 3 Edit Delete
18406 $\text{The equation that represents a Freundlich adsorption isotherm is:}$ 2 219 Recommended Questions $\frac{x}{m} = kp^{0.3}$, $\frac{x}{m} = kp^{2.5}$... 1 Edit Delete
18405 $\text{An adsorption isotherm is a plot between:}$ 2 219 Recommended Questions $\text{The extent of adsorption } \left( \frac{x}{m} \right) \text{ against the pressure of gas (P) at constant V.}$, $\text{The extent of adsorption } \left( \frac{x}{m} \right) \text{ against the pressure of gas (P) at constant T.}$... 2 Edit Delete
18404 $\text{In the Freundlich adsorption isotherm, the value of } 1/n \text{ is:}$ $1. \text{ Between 0 and 1 in all cases.}$ $2. \text{ Between 2 and 4 in all cases.}$ $3. \text{ 1 in the case of physical adsorption.}$ $4. \text{ 1 in the case of chemisorption.}$ 2 219 Recommended Questions $\text{Between 0 and 1 in all cases.}$, $\text{Between 2 and 4 in all cases.}$... 1 Edit Delete
18403 $\text{The graph between } \log \frac{x}{m} \text{ vs } \log p \text{ is given below:}$ $\text{What is the value of the slope?}$ 2 219 Recommended Questions $\left( \frac{1}{2} \right)^n$, $n$... 3 Edit Delete
18402 $\text{Given below are three processes:}$ $\text{a. Emulsification}$ $\text{b. Adsorption}$ $\text{c. Absorption}$ $\text{The process of froth flotation and chromatography is based on:}$ 2 219 Recommended Questions $\text{a \& b}$, $\text{b \& c}$... 2 Edit Delete
18401 $\text{Among the following options, the gas that will be more readily adsorbed on the surface of charcoal is:}$ $1.\ \text{CO}_2$ $2.\ \text{NH}_3$ $3.\ \text{Br}_2$ $4.\ \text{N}_2$ 2 219 Recommended Questions $\text{CO}_2$, $\text{NH}_3$... 2 Edit Delete
18400 $\text{Which ion is adsorbed when a diluted aqueous solution of } \text{AgNO}_3 \text{ (excess) is added to KI solution, resulting in formation of positively charged sol particles of AgI?}$ 2 219 Recommended Questions $\text{K}^+$, $\text{Ag}^+$... 2 Edit Delete
18399 $\text{Water vapours can be both adsorbed and absorbed by respectively?}$ 2 219 Recommended Questions $\text{Silica gel and CaCl}_2$, $\text{Chalk and CaCl}_2$... 1 Edit Delete
18398 $\text{Which of the following statement is false?}$ 2 219 Recommended Questions $\text{Adsorption is a reversible process and is accompanied by a decrease in pressure.}$, $\text{Adsorption decreases with an increase in pressure.}$... 2 Edit Delete
18397 $\text{Incorrect statement regarding adsorption is:}$ 2 219 Recommended Questions $\text{Adsorption is a surface phenomenon of accumulation of molecules of a substance at the surface rather than in the bulk of a solid or liquid.}$, $\text{Adsorption involves penetration through the surface to the bulk of the solid or liquid.}$... 2 Edit Delete
18396 $\text{On increasing the temperature:}$ $1.\ \text{The extent of adsorption increases in physisorption.}$ $2.\ \text{The extent of adsorption decreases in physisorption.}$ $3.\ \text{No effect on adsorption.}$ $4.\ \text{The extent of adsorption first decreases, then increases.}$ 2 219 Recommended Questions $\text{The extent of adsorption increases in physisorption.}$, $\text{The extent of adsorption decreases in physisorption.}$... 2 Edit Delete
18395 $\text{The characteristics associated with adsorption are:}$ $1. \Delta G, \Delta H, \text{ and } \Delta S \text{ are all negative.}$ $2. \Delta G \text{ and } \Delta H \text{ are negative, but } \Delta S \text{ is positive.}$ $3. \Delta G \text{ and } \Delta S \text{ are negative, but } \Delta H \text{ is positive.}$ $4. \Delta G \text{ is negative, but } \Delta H \text{ and } \Delta S \text{ are positive.}$ 2 219 Recommended Questions $\Delta G, \Delta H, \text{ and } \Delta S \text{ are all negative.}$, $\Delta G \text{ and } \Delta H \text{ are negative, but } \Delta S \text{ is positive.}$... 1 Edit Delete
18394 $\text{The probable reasons of the exothermic nature of adsorption is:}$ 2 219 Recommended Questions $\text{Adsorption leads to a decrease in the residual forces on the surface of the adsorbent.}$, $\Delta S \text{ is negative.}$... 3 Edit Delete
18393 $\text{Why is a finely divided substance more effective as an adsorbent?}$ 2 219 Recommended Questions $\text{Small surface area.}$, $\text{Large surface area.}$... 2 Edit Delete
18392 $\text{Adsorbent can be activated by:}$ 2 219 Recommended Questions $\text{Increasing the surface area of the adsorbent.}$, $\text{Breaking adsorbent into smaller pieces or powdering it.}$... 3 Edit Delete
18391 $\text{The factors that influence the adsorption of a gas on a solid is/are:}$ 2 219 Recommended Questions $\text{Nature of the gas.}$, $\text{Surface area of the solid.}$... 4 Edit Delete
18390 $\text{In the presence of a catalyst, the heat evolved or absorbed during the reaction:}$ 2 218 Recommended Questions $\text{Increases.}$, $\text{Decreases.}$... 3 Edit Delete
18389 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A):}$ \text{The enthalpy of reaction remains constant in the presence of a catalyst.}$ $\text{Reason (R):}$ \text{A catalyst participating in the reaction forms a different activated complex and lowers down the activation energy but the difference in energy of the reactant and the product remains the same.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18388 $\text{An incorrect statement regarding the catalyst is:}$ 2 218 Recommended Questions $\text{It catalyzes the forward and backward reactions to the same extent.}$, $\text{It alters Gibbs free energy of the reaction.}$... 2 Edit Delete
18387 $\text{The factor(s) that affect the rate of a chemical reaction is/are:}$ 2 218 Recommended Questions $\text{Concentration/Pressure of reactants.}$, $\text{Temperature.}$... 4 Edit Delete
18386 $\text{Match the statements in Column I and Column II:}$ $\text{Column I (Thermodynamic/Kinetic Principle)}$ $\text{A. Catalyst alters the rate of reaction}$ $\text{B. } e^{-E_a/RT}$ $\text{C. Energetically favorable reactions are sometimes slow}$ $\text{D. The area under the Maxwell-Boltzmann curve is constant}$ $\text{Column II (Impact on Reaction Dynamics)}$ $\text{1. Proper orientation is not there always}$ $\text{2. By lowering the activation energy}$ $\text{3. Total probability is one}$ $\text{4. Refers to the fraction of molecules with energy equal to or greater than the activation energy}$ 2 218 Recommended Questions $2 \ 4 \ 1 \ 3$, $3 \ 1 \ 4 \ 2$... 1 Edit Delete
18385 $\text{The role of a catalyst is to change:}$ 2 218 Recommended Questions $\text{Gibbs energy of the reaction}$, $\text{Enthalpy of reaction}$... 3 Edit Delete
18384 $\text{In a reaction, the rate} = k[\text{A}]^1[\text{B}]^{-2/3} \text{ the order of the reaction is-}$ 2 218 Recommended Questions $1/3$, $2$... 3 Edit Delete
18383 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): The overall order of reaction is the sum of the power of all the reactants in the rate expression.}$ $\text{Reason (R): There are many higher-order reactions.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
18382 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A):}$ \text{Base catalyzed hydrolysis of ethyl acetate is a first-order reversible reaction.}$ $\text{Reason (R):}$ \text{The order of reaction always depends on the stoichiometry of the reaction.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 4 Edit Delete
18381 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): The order of the reaction can be zero or fractional.}$ $\text{Reason (R): We cannot determine order from the balanced chemical equation.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
18380 $\text{The following mechanism has been proposed for the reaction of NO with Br}_2 \text{ to form NOBr:}$ $\text{NO(g) + Br}_2\text{(g)} \rightleftharpoons \text{NOBr}_2\text{(g)}$ $\text{NOBr}_2\text{(g) + NO(g)} \rightarrow \text{2NOBr(g)}$ $\text{If the second step is the rate determining step, the order of the reaction with respect to NO(g) will be:}$ 2 218 Recommended Questions $1$, $0$... 4 Edit Delete
18379 $\text{The mechanism of a hypothetical reaction}$ $\text{X}_2 + \text{Y}_2 \rightarrow 2\text{XY} \text{ is given below:}$ $\text{(i) X}_2 \rightarrow \text{X} + \text{X (Fast)}$ $\text{(ii) X + Y}_2 \rightleftharpoons \text{XY + Y (slow)}$ $\text{(iii) X + Y} \rightarrow \text{XY (Fast)}$ $\text{The overall order of the reaction will be:}$ 2 218 Recommended Questions $2$, $0$... 3 Edit Delete
18378 $\text{A reaction } \text{A}_2 + \text{B}_2 \rightarrow 2\text{AB} \text{ occurs by the following mechanism:}$ $\text{A}_2 \rightarrow \text{A} + \text{A} \quad \text{.....(slow)}$ $\text{A} + \text{B}_2 \rightarrow \text{AB} + \text{B} \quad \text{.....(fast)}$ $\text{A} + \text{B} \rightarrow \text{AB} \quad \text{.....(fast)}$ $\text{Its order would be:}$ 2 218 Recommended Questions $3/2$, $1$... 2 Edit Delete
18377 $\text{For a given reaction the concentration of the reactant plotted against time gave a straight line with negative slope.}$ $\text{The order of the reaction will be:}$ 2 218 Recommended Questions $3$, $2$... 4 Edit Delete
18376 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): For elementary reactions, the law of mass action and the rate of law expression are generally the same.}$ $\text{Reason (R): The molecularity of an elementary reaction is always one.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
18375 $\text{Match the graph given in Column I with the order of reaction given in Column II.}$ $\text{More than one item in Column I may be linked to the same item in Column II:}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline (i) & (a) \text{1st order} \\ (ii) & (b) \text{Zero order} \\ (iii) & \\ (iv) & \\ \hline \end{array}$ 2 218 Recommended Questions $(i) \rightarrow (a), (ii) \rightarrow (b), (iii) \rightarrow (a), (iv) \rightarrow (b)$, $(i) \rightarrow (a), (ii) \rightarrow (b), (iii) \rightarrow (b), (iv) \rightarrow (a)$... 2 Edit Delete
18374 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Order and molecularity are the same.}$ $\text{Reason (R):}$ $\text{Order is determined experimentally, and molecularity is the sum of the stoichiometric coefficient of the rate-determining the elementary step.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
18373 $\text{The kinetic data for the reaction: } 2\text{A} + \text{B}_2 \rightarrow 2\text{AB} \text{ are as given below}$ $\begin{array}{ccc} [\text{A}]/\text{mol L}^{-1} & [\text{B}_2]/\text{mol L}^{-1} & \text{Rate}/\text{mol L}^{-1}\text{s}^{-1} \\ 0.5 & 1.0 & 2.5 \times 10^{-3} \\ 1.0 & 1.0 & 5.0 \times 10^{-3} \\ 0.5 & 2.0 & 1 \times 10^{-2} \end{array}$ $\text{The order of reaction with respect to A and B}_2 \text{ is, respectively:}$ 2 218 Recommended Questions $1 \text{ and } 2$, $2 \text{ and } 1$... 1 Edit Delete
18372 $\text{When the initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction will be:}$ 2 218 Recommended Questions $0$, $1$... 2 Edit Delete
18371 $\text{Match the items in Column I and Column II:}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Mathematical expression for the rate of reaction} & \text{1. Rate constant} \\ \text{B. Rate of reaction for zero-order reaction is equal to} & \text{2. Rate law} \\ \text{C. Units of rate constant for zero-order reaction is same as that of} & \text{3. Order of slowest step} \\ \text{D. Order of a complex reaction is determined by} & \text{4. Rate of reaction} \\ \hline \end{array}$ 2 218 Recommended Questions $\text{3 4 1 2}$, $\text{1 2 3 4}$... 3 Edit Delete
18370 $\text{The reaction below is an example of:}$ $\text{CH}_3\text{COOC}_2\text{H}_5 + \text{H}_2\text{O} \xrightarrow{H^+} \text{CH}_3\text{COOH} + \text{C}_2\text{H}_2\text{OH}$ $\text{Ethyl acetate} \quad \text{Acetic acid} \quad \text{Ethyl alcohol}$ 2 218 Recommended Questions $\text{Pseudo-first-order reaction}$, $\text{First-order reaction}$... 1 Edit Delete
18369 $\text{The following data were obtained during the first-order thermal decomposition of } \text{SO}_2\text{Cl}_2 \text{ at a constant volume.}$ $\text{SO}_2\text{Cl}_2(g) \rightarrow \text{SO}_2(g) + \text{Cl}_2(g)$ $\begin{array}{|c|c|c|} \hline \text{Experiment} & \text{Time/s} & \text{Total pressure/atm} \\ \hline 1 & 0 & 0.5 \\ \hline 2 & 100 & 0.6 \\ \hline \end{array}$ $\text{The rate of the reaction when total pressure is 0.65 atm will be:}$ 2 218 Recommended Questions $7.8 \times 10^{-4} \text{ s}^{-1} \text{ atm.}$, $0.8 \times 10^{-4} \text{ s}^{-1} \text{ atm.}$... 1 Edit Delete
18368 $\text{For a reaction A} \rightarrow \text{Product, with } k = 2.0 \times 10^{-2} \text{ s}^{-1}, \text{ if the initial concentration}$ $\text{of A is } 1.0 \text{ mol L}^{-1}, \text{ the concentration of A after 100 seconds would be:}$ 2 218 Recommended Questions $0.23 \text{ mol L}^{-1}$, $0.18 \text{ mol L}^{-1}$... 4 Edit Delete
18367 $\text{A first-order reaction is 15 \% completed in 20 minutes. The amount of time required to complete 60 \% of the reaction is:}$ 2 218 Recommended Questions $112.8 \text{ min}$, $120.7 \text{ min}$... 1 Edit Delete
18366 $\text{What is the percentage of the reactant molecules crossing over the energy barrier at 325 K?}$ $\text{Given that } \Delta H_{325} = 0.12 \text{ kcal, } E_{a(b)} = +0.02 \text{ kcal}$ 2 218 Recommended Questions 80.62 \%, 85.23 \%... 1 Edit Delete
18365 $\text{Half-life is independent of the concentration of a reactant. After 10 minutes, the volume of } \text{N}_2 \text{ gas is 10 L and after complete reaction, it is 50 L. Hence, the rate constant is:}$ 2 218 Recommended Questions $\frac{2.303}{10} \log 5 \text{ min}^{-1}$, $\frac{2.303}{10} \log 1.25 \text{ min}^{-1}$... 2 Edit Delete
18364 $\text{For a first-order reaction A} \rightarrow \text{Products, the rate of reaction at [A] = 0.2 M is } 1.0 \times 10^{-2} \text{ mol litre}^{-1} \text{ min}^{-1}. \text{ The half-life period for the reaction will be:}$ 2 218 Recommended Questions $832 \text{ sec}$, $440 \text{ sec}$... 1 Edit Delete
18363 $\text{From the plot of } \log k \text{ vs } 1/T, \text{ following parameter can be calculated:}$ $1. \text{ Activation energy.}$ $2. \text{ Rate constant of reaction.}$ $3. \text{ Order of reaction.}$ $4. \text{ Activation energy as well as the frequency factor.}$ 2 218 Recommended Questions $\text{Activation energy.}$, $\text{Rate constant of reaction.}$... 4 Edit Delete
18362 $1 \text{ mole of a gas changes linearly from its initial state } (2 \text{ atm}, 10 \text{ lt}) \text{ to its final state } (8 \text{ atm}, 4 \text{ lt}).$ $\text{The maximum rate constant is equal to } 20 \text{ sec}^{-1} \text{ and the value of activation energy is } 40 \text{ kJ}, \text{ assuming that the activation energy does not change in this temperature range.}$ $\text{The value of the rate constant, at the maximum temperature that the gas can attain, is:}$ 2 218 Recommended Questions $0.56 \times 10^{-3} \text{ sec}^{-1}$, $3.16 \times 10^{-3} \text{ sec}^{-1}$... 3 Edit Delete
18361 $\text{The gas phase decomposition } 2\text{N}_2\text{O}_5 \rightarrow 4\text{NO}_2 + \text{O}_2 \text{ follows the first order rate law, } K = 7.5 \times 10^{-3} \text{ sec}^{-1}. \text{ The initial pressure of } \text{N}_2\text{O}_5 \text{ is } 0.1 \text{ atm. The time of decomposition of } \text{N}_2\text{O}_5 \text{ so that the total pressure becomes } 0.15 \text{ atm will be -}$ 2 218 Recommended Questions $54 \text{ sec}$, $5.4 \text{ sec}$... 1 Edit Delete
18360 $\text{The half-life of the two samples is } 0.1 \text{ and } 0.4 \text{ seconds, respectively.}$ $\text{Their concentrations are } 200 \text{ and } 50, \text{ respectively.}$ $\text{The order of the reactions will be:}$ 2 218 Recommended Questions $0$, $2$... 2 Edit Delete
18359 $\text{The slope of the given below graph is -}$ 2 218 Recommended Questions $\frac{k}{2.303}$, $-\frac{k}{2.303}$... 1 Edit Delete
18358 $\text{The decomposition of sucrose follows the first-order rate law. For this decomposition, } t_{1/2} = 3.00 \text{ hours. The fraction of a sample of sucrose that remains after 8 hours would be:}$ 2 218 Recommended Questions $0.13$, $0.42$... 3 Edit Delete
18357 $\text{A first-order reaction takes 40 min for 30 \% decomposition. The } t_{1/2} \text{ for this reaction will be:}$ 2 218 Recommended Questions $77.7 \text{ min}$, $27.2 \text{ min}$... 1 Edit Delete
18356 $\text{The elementary reaction A + B} \rightarrow \text{products has } k = 2 \times 10^{-5} \text{ M}^{-1} \text{ s}^{-1} \text{ at a temperature of } 27^\circ \text{C.}$ $\text{Several experimental runs are carried out using stoichiometric proportion.}$ $\text{The reaction has a temperature coefficient value of } 2.0.$ $\text{At what temperature should the reaction be carried out if, in spite of halving the concentrations,}$ $\text{the rate of reaction is desired to be } 50\% \text{ higher than in the previous run?}$ $\left( \text{Given } \frac{\ln 6}{\ln 2} = 2.585 \right)$ 2 218 Recommended Questions $47^\circ \text{C}$, $53^\circ \text{C}$... 2 Edit Delete
18355 $\text{The rate of a reaction increases 4-fold when concentration of reactant is increased 16 times.}$ $\text{If the rate of reaction is } 4 \times 10^{-6} \text{ mol L}^{-1}\text{s}^{-1} \text{ when concentration of the reactant is } 4 \times 10^{-4} \text{ mol L}^{-1}, \text{ the rate constant of the reaction will be:}$ 2 218 Recommended Questions $2 \times 10^{-4} \text{ m}^{1/2} \text{ L}^{-1/2} \text{ s}^{-1}$, $1 \times 10^{-2} \text{ s}^{-1}$... 1 Edit Delete
18354 $\text{Consider the first-order gas-phase decomposition reaction given below.}$ $\text{A(g)} \rightarrow \text{B(g)} + \text{C(g)}$ $\text{The initial pressure of the system before the decomposition of A was } P_i. \text{ After the lapse of time } t, \text{ the total pressure of the system increased by } X \text{ units and became } P_t. \text{ The rate constant } k \text{ for the reaction is:}$ 2 218 Recommended Questions $k = \frac{2.303}{t} \log \frac{P_i}{P_i - x}$, $k = \frac{2.303}{t} \log \frac{P_i}{2P_i - P_t}$... 2 Edit Delete
18353 $\text{The thermal decomposition of a compound is of first order. If 50 \% of a sample of the compound decomposes in 120 minutes, how long will it take for 90 \% of the compound to decompose?}$ 2 218 Recommended Questions $399 \text{ min}$, $410 \text{ min}$... 1 Edit Delete
18352 $\text{For a general reaction A} \rightarrow \text{B, the plot of concentration of A vs time is given below:}$ $\text{The unit of the rate constant would be:}$ 2 218 Recommended Questions $\text{mol L}^{-1} \text{ s}^{-1}$, $\text{s}^{-1}$... 3 Edit Delete
18351 $\text{If in the fermentation of sugar in an enzymatic solution that is } 0.12 \text{ M, the concentration of the sugar is reduced to } 0.06 \text{ M in } 10 \text{ h and to } 0.03 \text{ M in } 20 \text{ h, the order of the reaction will be:}$ 2 218 Recommended Questions $1$, $2$... 1 Edit Delete
18350 $\text{If the rate of reaction doubles when the temperature is raised from } 20 \, ^\circ\text{C to } 35 \, ^\circ\text{C, then the activation energy for the reaction will be:}$ $\text{(R = 8.314 J mol}^{-1} \text{ K}^{-1})$ 2 218 Recommended Questions $342 \text{ kJ mol}^{-1}$, $269 \text{ kJ mol}^{-1}$... 3 Edit Delete
18349 $\text{A first-order reaction takes 40 min for 30 \% decomposition. The half life of the reaction will be:}$ 2 218 Recommended Questions $88.8 \text{ min}$, $94.3 \text{ min}$... 4 Edit Delete
18348 $\text{During a nuclear explosion, one of the products is } ^{90}\text{Sr with a half-life of 28.1 years.}$ $\text{If 1 } \mu\text{g of } ^{90}\text{Sr was absorbed in the bones of a newly born baby instead of calcium,}$ $\text{the amount of } ^{90}\text{Sr that will remain after 10 years in the now grown up child would be -}$ $\text{(Given, antilog(0.108) = 1.28)}$ 2 218 Recommended Questions $0.227 \ \mu\text{g}$, $0.781 \ \mu\text{g}$... 2 Edit Delete
18347 $\text{A first-order reaction is 50 \% completed in } 1.26 \times 10^{14} \text{ s. The time required for 100 \% completion of the reaction will be:}$ 2 218 Recommended Questions $1.26 \times 10^{15} \text{ s}$, $2.52 \times 10^{14} \text{ s}$... 4 Edit Delete
18346 $\text{Given the following observations:}$ $\begin{array}{|c|c|c|c|} \hline \text{Experiment} & [A] / \text{mol L}^{-1} & [B] / \text{mol L}^{-1} & \text{Initial rate} / \text{mol L}^{-1} \text{min}^{-1} \\ \hline \text{I} & 0.1 & 0.1 & 2.0 \times 10^{-2} \\ \text{II} & X & 0.2 & 4.0 \times 10^{-2} \\ \text{III} & 0.4 & 0.4 & Y \\ \hline \end{array}$ $\text{The reaction between A and B is first-order with respect to A and zero-order}$ $\text{with respect to B. The values of X and Y are, respectively:}$ 2 218 Recommended Questions $X = 0.2 \text{ mol L}^{-1}; Y = 0.08 \text{ mol L}^{-1}(\text{min})^{-1}$, $X = 0.02 \text{ mol L}^{-1}; Y = 0.08 \text{ mol L}^{-1}(\text{min})^{-1}$... 1 Edit Delete
18345 $\text{A first-order reaction was started with a decimolar solution of the reactant.}$ $\text{After 8 minutes and 20 seconds, its concentration was found to be } M/100. \text{ The}$ $\text{rate constant of the reaction will be:}$ 2 218 Recommended Questions $4.6 \times 10^{-3} \text{ sec}^{-1}$, $16.6 \times 10^{-3} \text{ sec}^{-1}$... 1 Edit Delete
18344 $\text{The half-life for radioactive decay of } ^{14}\text{C is } 5730 \text{ y. An archaeological artifact containing wood had only } 80 \% \text{ of the } ^{14}\text{C found in a living tree. The age of the sample will be:}$ 2 218 Recommended Questions $1657.3 \text{ y}$, $1845.4 \text{ y}$... 2 Edit Delete
18343 $\text{The correct graphical representation of first-order reaction is:}$ 2 218 Recommended Questions $(a) \text{ and } (b)$, $(b) \text{ and } (c)$... 4 Edit Delete
18342 $\text{If } 60\% \text{ of a first-order reaction is completed in } 60 \text{ minutes, } 50\% \text{ of the same reaction takes approximately:}$ $\text{(log4 = 0.60, log5 = 0.69)}$ 2 218 Recommended Questions $55 \text{ min}$, $45 \text{ min}$... 2 Edit Delete
18341 $\text{If 'a' is the initial concentration of a substance which reacts according to zero-order kinetics and k is the rate constant, the time for the reaction to go to completion will be:}$ 2 218 Recommended Questions $\frac{a}{k}$, $\frac{2}{ka}$... 1 Edit Delete
18340 $\text{For the elementary reaction M} \rightarrow \text{N, the rate of disappearance of M increases by a factor of 8 upon doubling the concentration of M. The order of the reaction with respect to M will be:}$ $1.\ 4$ $2.\ 3$ $3.\ 2$ $4.\ 1$ 2 218 Recommended Questions $4$, $3$... 2 Edit Delete
18339 $\text{For a reaction of the type } 2A + B \rightarrow 2C, \text{ the rate of the reaction is given by } k[A]^2[B].$ $\text{When the volume of the reaction vessel is reduced to } \frac{1}{4} \text{ of the original volume, the rate of reaction changes by a factor of:}$ 2 218 Recommended Questions 0.25, 16... 3 Edit Delete
18338 $\text{The half-life time for the decomposition of a substance dissolved in } \text{CCl}_4 \text{ is } 2.5 \text{ hours at } 30^\circ \text{C. The amount of substance that will be left after } 10 \text{ hours if the initial weight of the substance is } 160 \text{ gm is:}$ 2 218 Recommended Questions $20 \text{ gm}$, $30 \text{ gm}$... 4 Edit Delete
18337 $\text{The rate constant of a first-order reaction is} \, 4 \times 10^{-3} \, \text{sec}^{-1}. \, \text{At a reactant concentration of} \, 0.02 \, \text{M}, \, \text{the rate of reaction would be:}$ 2 218 Recommended Questions $8 \times 10^{-5} \, \text{M sec}^{-1}$, $4 \times 10^{-3} \, \text{M sec}^{-1}$... 1 Edit Delete
18336 $\text{The half-life of } ^{92}\text{U}_{238} \text{ against } \alpha\text{-decay is } 4.5 \times 10^9 \text{ year. The time taken in a year for the decay of the } \frac{15}{16} \text{ part of this isotope will be:}$ 2 218 Recommended Questions $9.0 \times 10^9$, $1.8 \times 10^{10}$... 2 Edit Delete
18335 $\text{The half-life period for a first-order reaction is 20 minutes. The time required to change the concentration of the reactants from 0.08 M to 0.01 M will be:}$ 2 218 Recommended Questions $20 \text{ minutes}$, $60 \text{ minutes}$... 2 Edit Delete
18334 $\text{The graph that represents a first-order reaction is:}$ 2 218 Recommended Questions $\frac{t_{1/2}}{a}$ \text{ (linear increasing)}, $\frac{t_{1/2}}{a}$ \text{ (constant)}... 2 Edit Delete
18333 $\text{The rate constant for a first-order reaction is } 4.606 \times 10^{-3} \text{ s}^{-1}. \text{ The time required to reduce } 2.0 \text{ g of the reactant to } 0.2 \text{ g will be:}$ 2 218 Recommended Questions $200 \text{ s}$, $500 \text{ s}$... 2 Edit Delete
18332 $\text{A radioactive substance has a rate constant of } 4 \text{ years}^{-1}. \text{ What is its half-life?}$ 2 218 Recommended Questions $0.05 \text{ years}$, $0.17 \text{ years}$... 2 Edit Delete
18331 $\text{An incorrect statement about the collision theory of chemical reaction is:}$ 2 218 Recommended Questions $\text{It considers reacting molecules or atoms to be hard spheres and ignores their structural features.}$, $\text{The number of effective collisions determines the rate of reaction.}$... 3 Edit Delete
18330 $\text{The rate constant for the decomposition of hydrocarbons is } 2.418 \times 10^{-5} \ \text{s}^{-1} \ \text{at } 546 \ \text{K.}$ $\text{If the energy of activation is } 179.9 \ \text{kJ/mol, the value of the pre-exponential factor will be:}$ 2 218 Recommended Questions $4.0 \times 10^{12} \ \text{s}^{-1}$, $7.8 \times 10^{-13} \ \text{s}^{-1}$... 1 Edit Delete
18329 $\text{For a chemical reaction } A \rightarrow \text{product, the postulated mechanism of the reaction is as follows.}$ $A \overset{k_1}{\underset{k_2}{\rightleftharpoons}} 3B \overset{k_3}{\rightarrow} C \text{ (R.D.S)}$ $\text{If the rate constants for individual reactions are } k_1, k_2 \text{ and } k_3, \text{ and activation energies are}$ $E_{a1} = 180 \text{ kJ mol}^{-1},$ $E_{a2} = 90 \text{ kJ mol}^{-1},$ $E_{a3} = 40 \text{ kJ mol}^{-1}$ $\text{then overall activation energy for the reaction given above is}$ 2 218 Recommended Questions $70 \text{ kJ mol}^{-1}$, $-10 \text{ kJ mol}^{-1}$... 4 Edit Delete
18328 $\text{In the Arrhenius equation } K = Ae^{-E_a/RT}, \text{ the quantity } e^{-E_a/kT} \text{ is referred as:}$ 2 218 Recommended Questions $\text{Boltzmann factor.}$, $\text{Frequency factor.}$... 1 Edit Delete
18327 $\text{The relationship between temperature and the variance in reaction rate is:}$ 2 218 Recommended Questions $\text{Graph 1: Linear increase of rate with temperature}$, $\text{Graph 2: Exponential increase of rate with temperature}$... 2 Edit Delete
18326 $\text{For a first-order reaction } A \rightarrow P, \text{ rate constant } (k) \text{ [dependent on temperature (T)] was found to follow the equation } \log k = \left(-2000\right) \frac{1}{T} + 6.0. \text{ The pre-exponential factor } A \text{ and the activation energy } E_a, \text{ respectively, are:}$ 2 218 Recommended Questions $1.0 \times 10^6 \text{ s}^{-1} \text{ and } 9.2 \text{ kJ mol}^{-1}$, $6.0 \text{ s}^{-1} \text{ and } 16.6 \text{ kJ mol}^{-1}$... 4 Edit Delete
18325 $\text{Consider the Arrhenius equation given below and choose the correct option:}$ $k = Ae^{-\frac{E_a}{RT}}$ 2 218 Recommended Questions $\text{Rate constant increases exponentially with increasing activation energy and decreasing temperature.}$, $\text{Rate constant decreases exponentially with increasing activation energy and increasing temperature.}$... 4 Edit Delete
18324 $\text{The first order rate constant for a certain reaction increases from}$ $1.667 \times 10^{-6} \text{ s}^{-1} \text{ at } 727^\circ\text{C to } 1.667 \times 10^{-4} \text{ s}^{-1} \text{ at } 1571^\circ\text{C. The rate constant at } 1150^\circ\text{C is:}$ $\text{(assume activation energy is constant over the given temperature range)}$ 2 218 Recommended Questions $3.911 \times 10^{-5} \text{ s}^{-1}$, $1.139 \times 10^{-5} \text{ s}^{-1}$... 3 Edit Delete
18323 $\text{For a given reaction, the presence of a catalyst reduces the energy of activation by 2 kcal at 27 } ^\circ \text{C. The rate of reaction will be increased by:}$ 2 218 Recommended Questions $20 \text{ times}$, $14 \text{ times}$... 3 Edit Delete
18322 $\text{A first-order reaction's 10 percent completion time at 298 K is the same as its 25 percent completion time at 308 K. The value of } E_a \text{ will be:}$ 2 218 Recommended Questions $76.64 \text{ J mol}^{-1}$, $66.64 \text{ kJ mol}^{-1}$... 3 Edit Delete
18321 $\text{For the reaction, } \text{C}_2\text{H}_5\text{I} + \text{OH}^- \rightarrow \text{C}_2\text{H}_5\text{OH} + \text{I}^- \text{ the rate constant was found to have a value of } 5.03 \times 10^{-2} \text{ mol}^{-1} \text{ dm}^3 \text{ s}^{-1} \text{ at } 289 \text{ K and } 6.71 \text{ mol}^{-1} \text{ dm}^3 \text{ s}^{-1} \text{ at } 333 \text{ K.}$ $\text{The rate constant at } 305 \text{ K will be:}$ 2 218 Recommended Questions $1.35 \text{ mol}^{-1} \text{ dm}^3 \text{ s}^{-1}$, $0.35 \text{ mol}^{-1} \text{ dm}^3 \text{ s}^{-1}$... 2 Edit Delete
18320 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A):}$ \text{The rate constant determined from the Arrhenius equation is fairly accurate for simple as well as complex molecules.}$ $\text{Reason (R):}$ \text{Reactant molecules undergo chemical change irrespective of their orientation during a collision.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
18319 $\text{The rate constant for the first-order decomposition of } \text{H}_2\text{O}_2 \text{ is given by the equation:}$ $\log k = 14.34 - 1.25 \times 10^4 \frac{K}{T}. \text{ The value of } E_a \text{ for the reaction would be:}$ 2 218 Recommended Questions $249.34 \text{ kJ mol}^{-1}$, $242.64 \text{ J mol}^{-1}$... 4 Edit Delete
18318 $\text{When the temperature of a reaction increases from } 27^\circ \text{C to } 37^\circ \text{C, the rate increases by } 2.5 \text{ times. The activation energy in the temperature range will be:}$ 2 218 Recommended Questions $53.6 \text{ kJ}$, $12.61 \text{ kJ}$... 4 Edit Delete
18317 $\text{The activation energy of a chemical reaction can be calculated by:}$ 2 218 Recommended Questions $\text{Determining the rate constant at standard temperature.}$, $\text{Determining the rate constant at two temperatures.}$... 2 Edit Delete
18316 $\text{Given the following reaction:}$ $\text{N}_2\text{O}_5 \; \text{as} \; \text{N}_2\text{O}_5 \rightleftharpoons 2\text{NO}_2 + (1/2)\text{O}_2$ $\text{The values of rate constants for the above reaction are} \; 3.45 \times 10^{-5} \; \text{and} \; 6.9 \times 10^{-3} \; \text{at} \; 27^\circ \text{C} \; \text{and} \; 67^\circ \text{C} \; \text{respectively. The activation energy for the above reaction is:}$ 2 218 Recommended Questions $102 \times 10^2 \; J$, $488.5 \; kJ$... 4 Edit Delete
18315 $\text{At 400 K, the energy of activation of a reaction is decreased by 0.8 kcal in the presence of a catalyst. As a result, the rate will be:}$ 2 218 Recommended Questions $\text{Increased by 2.71 times.}$, $\text{Increased by 1.18 times.}$... 1 Edit Delete
18314 $\text{The correct statement based on the graph below is:}$ $\text{Activated complex}$ $\text{Energy}$ $E_1$ $\text{Products}$ $E_2$ $\text{Reactants}$ $\text{Reaction coordinate}$ 2 218 Recommended Questions $\text{The activation energy of the forward reaction is } E_1 + E_2 \text{ and the product is less stable than reactant.}$, $\text{The activation energy of the forward reaction is } E_1 + E_2 \text{ and the product is more stable than the reactant.}$... 1 Edit Delete
18313 $\text{The decomposition of A into product has value of k as } 4.5 \times 10^3 \text{ s}^{-1} \text{ at } 10^\circ \text{C.}$ $\text{Energy of activation of the reaction is } 60 \text{ kJ mol}^{-1}.$ $\text{The temperature at which value k would become } 1.5 \times 10^4 \text{ s}^{-1} \text{ is:}$ 2 218 Recommended Questions $12^\circ \text{C}$, $24^\circ \text{C}$... 2 Edit Delete
18312 $\text{The graph between } \ln K \text{ and } 1/T \text{ is given below:}$ $\text{The value of activation energy would be:}$ 2 218 Recommended Questions $207.8 \text{ KJ/mol}$, $-207.8 \text{ KJ/mol}$... 1 Edit Delete
18311 $\text{The rate of reaction triples when the temperature changes from } 20^\circ\text{C to } 50^\circ\text{C. The energy of activation for the reaction will be:}$ 2 218 Recommended Questions $28.81 \text{ kJ mol}^{-1}$, $38.51 \text{ kJ mol}^{-1}$... 1 Edit Delete
18310 $\text{A catalyst lowers the activation energy of a reaction from } 20 \text{ kJ mol}^{-1} \text{ to } 10 \text{ kJ mol}^{-1}. \text{ The temperature at which the uncatalysed reaction will have the same rate as that of the catalysed at } 27 ^\circ \text{C will be:}$ 2 218 Recommended Questions $-123 ^\circ \text{C}$, $-327 ^\circ \text{C}$... 3 Edit Delete
18309 $\text{The correct graphical representation of relation between } \ln k \text{ and } 1/T \text{ is:}$ 2 218 Recommended Questions $\text{Graph 1: Decreasing linear graph of } \ln k \text{ vs } 1/T$, $\text{Graph 2: Increasing linear graph of } \ln k \text{ vs } 1/T$... 1 Edit Delete
18308 $\text{The following reaction was carried out at 300 K.}$ $2\text{SO}_2(g) + \text{O}_2(g) \rightarrow 2\text{SO}_3(g)$ $\text{The rate of formation of } \text{SO}_3 \text{ is related to the rate of disappearance of } \text{O}_2 \text{ by the following expression:}$ 2 218 Recommended Questions $-\frac{\Delta [\text{O}_2]}{\Delta t} = +\frac{1}{2} \frac{\Delta [\text{SO}_3]}{\Delta t}$, $-\frac{\Delta [\text{O}_2]}{\Delta t} = \frac{\Delta [\text{SO}_3]}{\Delta t}$... 1 Edit Delete
18307 $\text{For the reaction, } 2A + B \rightarrow 3C + D$ $\text{Which of the following is an incorrect expression for the rate of reaction?}$ 2 218 Recommended Questions $-\frac{d[C]}{3dt}$, $-\frac{d[B]}{dt}$... 1 Edit Delete
18306 $\text{The rate constant for a chemical reaction that takes place at 500 K is expressed as } K = A \cdot e^{-1000}. \text{ The activation energy of the reaction will be:}$ 2 218 Recommended Questions $100 \text{ cal/mol}$, $1000 \text{ kcal/mol}$... 2 Edit Delete
18305 $\text{If a reaction A + B} \rightarrow \text{C is exothermic to the extent of 30 kJ/mol and the forward reaction has an activation energy of 70 kJ/mol, the activation energy for the reverse reaction will be:}$ 2 218 Recommended Questions $30 \text{ kJ/mol}$, $40 \text{ kJ/mol}$... 4 Edit Delete
18304 $\text{When the temperature of a reaction increases from } 300 \text{ K to } 310 \text{ K, the rate of the reaction doubles. What is the activation energy for this reaction?}$ $\left( R = 8.314 \text{ J K}^{-1} \text{ mol}^{-1} \text{ and } \log 2 = 0.301 \right)$ 2 218 Recommended Questions $53.6 \text{ kJ mol}^{-1}$, $68.6 \text{ kJ mol}^{-1}$... 1 Edit Delete
18303 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): At very high temperatures (approaches to infinity), the rate}$ $\text{constant becomes equal to the collision frequency.}$ $\text{Reason (R): The collision in which molecules collide with proper orientation}$ $\text{is called an ineffective collision.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
18302 $\text{In a first-order reaction A} \rightarrow \text{products, the concentration of the reactant decreases to } 6.25\% \text{ of its initial value in } 80 \text{ minutes. The value of the rate constant, if the initial concentration is } 0.2 \text{ mole/litre, will be:}$ 2 218 Recommended Questions $2.17 \times 10^{-2} \text{ min}^{-1}$, $3.46 \times 10^{-2} \text{ min}^{-1}$... 2 Edit Delete
18301 $\text{An increase in the concentration of the reactants of a reaction leads to a change in:}$ 2 218 Recommended Questions $\text{Heat of reaction}$, $\text{Threshold energy}$... 3 Edit Delete
18300 $\text{The decomposition of hydrocarbons follows the equation: } k = (4.5 \times 10^{11} \text{s}^{-1}) e^{-28000 \text{K}/T}$ $\text{The activation energy (} E_a \text{) for the reaction would be:}$ 2 218 Recommended Questions $232.79 \text{ kJ mol}^{-1}$, $245.86 \text{ kJ mol}^{-1}$... 1 Edit Delete
18299 $\text{If } \Delta H \text{ of a reaction is } 100 \text{ kJ mol}^{-1}, \text{ then the activation energy for the forward reaction must be}$ 2 218 Recommended Questions $\text{Greater than } 100 \text{ kJ mol}^{-1}$, $\text{Less than } 100 \text{ kJ mol}^{-1}$... 1 Edit Delete
18298 $ ext{For A + B} \rightarrow ext{C + D, } \Delta H = -20 \text{ kJ mol}^{-1},$ $\text{the activation energy of the forward reaction is } 85 \text{ kJ mol}^{-1}.$ $\text{The activation energy for the backward reaction is...}$ 2 218 Recommended Questions $105$, $85$... 1 Edit Delete
18297 $\text{The rate constant, the activation energy, and the Arrhenius parameter of a}$ $\text{chemical reaction at } 25^\circ\text{C are } 3.0 \times 10^{-4} \text{ s}^{-1}, 104.4 \text{ kJ mol}^{-1} \text{ and } 6.0 \times 10^{14}\text{s}^{-1}$ $\text{ respectively.}$ $\text{The value of the rate constant as } T \rightarrow \infty \text{ will be:}$ 2 218 Recommended Questions $2.0 \times 10^{18} \text{ s}^{-1}$, $6.0 \times 10^{14} \text{ s}^{-1}$... 2 Edit Delete
18296 $\text{The correct representation of an exothermic reaction is:}$ 2 218 Recommended Questions $\text{Graph showing reactants with higher energy than products, indicating an exothermic reaction.}$, $\text{Graph showing products with higher energy than reactants, indicating an endothermic reaction.}$... 1 Edit Delete
18295 $\text{For a reaction } A \rightarrow B, \text{ the Arrhenius equation is given as } \log_e k = 4 - \frac{1000}{T} \text{ the activation energy in J/mol for the given reaction will be:}$ $1. \ 8314$ $2. \ 2000$ $3. \ 2814$ $4. \ 3412$ 2 218 Recommended Questions $8314$, $2000$... 1 Edit Delete
18294 $\text{The nature of the reaction represented in the following graph is:}$ $\text{H}_2 + \text{I}_2 \rightarrow 2\text{HI}$ 2 218 Recommended Questions $\text{Endothermic reaction}$, $\text{Exothermic reaction}$... 2 Edit Delete
18293 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): All collisions of reactant molecules lead to product formation.}$ $\text{Reason (R): Only those collisions in which molecules have the correct orientation and sufficient kinetic energy lead to the compound formation.}$ 2 218 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
18292 $\text{The correct statement about X in the below mentioned graph:}$ 2 218 Recommended Questions $\text{X represents activation energy without catalyst.}$, $\text{X represents activation energy with catalyst.}$... 2 Edit Delete
18291 $\text{The correct statement about the rate constant of a reaction is:}$ 2 218 Recommended Questions $\text{Rate constant is nearly doubled with a rise in temperature by } 10 \, ^\circ \text{C}$, $\text{Rate constant becomes half with a rise in temperature by } 10 \, ^\circ \text{C}$... 1 Edit Delete
18290 $\text{If a reaction A + B} \rightarrow \text{C is exothermic to the extent of 30 kJ mol}^{-1}$ $\text{and the forward reaction has an activation energy of 249 kJ mol}^{-1},$ $\text{the activation energy for the reverse reaction in kJ mol}^{-1} \text{ will be:}$ 2 218 Recommended Questions $324$, $279$... 2 Edit Delete
18289 $\text{A gaseous reaction } \text{A}_2(g) \rightarrow \text{B}(g) + \frac{1}{2}\text{C}(g) \text{ shows increase in pressure from } 100 \text{ mm to } 120 \text{ mm in 5 minutes. The rate of disappearance of } \text{A}_2 \text{ will be:}$ 2 218 Recommended Questions $4 \text{ mm min}^{-1}$, $8 \text{ mm min}^{-1}$... 2 Edit Delete
18288 $\text{From the following data, the orders with respect to A, B, C, respectively, are:}$ $\begin{array}{|c|c|c|c|} \hline [A] \text{ (mol/L)} & [B] \text{ (mol/L)} & [C] \text{ (mol/L)} & \text{rate (M/sec.)} \\ \hline 0.2 & 0.1 & 0.02 & 8.08 \times 10^{-3} \\ \hline 0.1 & 0.2 & 0.02 & 2.01 \times 10^{-3} \\ \hline 0.1 & 1.8 & 0.18 & 6.03 \times 10^{-3} \\ \hline 0.2 & 0.1 & 0.08 & 6.464 \times 10^{-2} \\ \hline \end{array}$ 2 218 Recommended Questions $-1, 1, 3/2$, $-1, 1, 1/2$... 4 Edit Delete
18287 $\text{The decomposition of a gaseous compound yields the following information:}$ $\begin{array}{|c|c|c|} \hline \text{Initial pressure, atm} & 1.6 & 0.8 & 0.4 \\ \hline \text{Time for 50 \% reaction, min} & 80 & 113 & 160 \\ \hline \end{array}$ $\text{The order of the reaction will be:}$ 2 218 Recommended Questions $1.0$, $1.5$... 2 Edit Delete
18286 $\text{In the following reaction: } x\text{A} \rightarrow y\text{B}$ $\log\left(-\frac{d[A]}{dt}\right) = \log\left(\frac{d[B]}{dt}\right) + 0.3$ $\text{where the -ve sign indicates the rate of disappearance of the reactant. Then, } x : y \text{ equals:}$ 2 218 Recommended Questions $1:2$, $2:1$... 2 Edit Delete
18285 $\text{For the reaction } 2\text{N}_2\text{O}_5(g) \rightarrow 4\text{NO}_2(g) + \text{O}_2(g), \text{ the concentration of } \text{NO}_2$ $\text{increases by } 2.4 \times 10^{-2} \text{ mol L}^{-1}$ $\text{in 6 seconds. The rate of appearance of } \text{NO}_2 \text{ and the rate of disappearance of } \text{N}_2\text{O}_5, \text{ respectively, are:}$ 2 218 Recommended Questions $2 \times 10^{-3} \text{ mol L}^{-1} \text{ sec}^{-1}, 4 \times 10^{-3} \text{ mol L}^{-1} \text{ sec}^{-1}$, $2 \times 10^{-3} \text{ mol L}^{-1} \text{ sec}^{-1}, 1 \times 10^{-3} \text{ mol L}^{-1} \text{ sec}^{-1}$... 4 Edit Delete
18284 $\text{Consider the following graph:}$ $\text{The instantaneous rate of reaction at } t = 600 \text{ sec will be:}$ 2 218 Recommended Questions $-4.75 \times 10^{-4} \text{ mol L}^{-1}\text{s}^{-1}$, $5.75 \times 10^{-5} \text{ mol L}^{-1}\text{s}^{-1}$... 2 Edit Delete
18283 $\text{In a reaction between A and B, the initial rate of reaction (} r_0 \text{) was measured for different initial concentrations of A and B as given below:}$ $\begin{array}{ccc} \text{A / mol L}^{-1} & 0.20 & 0.20 & 0.40 \\ \text{B / mol L}^{-1} & 0.30 & 0.10 & 0.05 \\ r_0 / \text{mol L}^{-1} \text{s}^{-1} & 5.07 \times 10^{-5} & 5.07 \times 10^{-5} & 1.43 \times 10^{-4} \end{array}$ $\text{The order of the reaction with respect to A and B would be:}$ 2 218 Recommended Questions $\text{The order with respect to A is 0.5 and with respect to B is zero}$, $\text{The order with respect to A is 1 and with respect to B is 0.5}$... 4 Edit Delete
18282 $\text{The rate of the reaction}$ $2\text{NO} + \text{Cl}_2 \rightarrow 2\text{NOCl is given by the rate equation}$ $\text{rate} = k[\text{NO}]^2[\text{Cl}_2]$ $\text{The value of the rate constant can be increased by:}$ 2 218 Recommended Questions $\text{Increasing the concentration of NO}$, $\text{Increasing the concentration of Cl}_2$... 3 Edit Delete
18281 $\text{The correct expression for the 3/4th life of a first-order reaction is:}$ 2 218 Recommended Questions $\frac{k}{2.303} \log \frac{4}{3}$, $\frac{k}{2.303} \log 4$... 3 Edit Delete
18280 $\text{If at a given instant, for the reaction } 2\text{N}_2\text{O}_5 \rightarrow 4\text{NO}_2 + \text{O}_2 \text{ rate and rate constant are } 1.02 \times 10^{-4} \text{ and } 3.4 \times 10^{-5} \text{ sec}^{-1} \text{ respectively, then the concentration of } \text{N}_2\text{O}_5 \text{ at that time will be:}$ 2 218 Recommended Questions $1.732 \text{ mol L}^{-1}$, $3.0 \text{ mol L}^{-1}$... 2 Edit Delete
18279 $\text{The average rate of reaction between the time interval of 30 to 60 seconds in}$ $\text{the below mentioned pseudo 1st order reaction is:}$ $\begin{array}{|c|c|c|c|c|} \hline \text{t/s} & 0 & 30 & 60 & 90 \\ \hline [\text{Ester}]/\text{mol L}^{-1} & 0.55 & 0.31 & 0.17 & 0.085 \\ \hline \end{array}$ 2 218 Recommended Questions $6.67 \times 10^{-2} \text{ mol L}^{-1} \text{ s}^{-1}$, $2.67 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1}$... 3 Edit Delete
18278 $\text{Based on the graph below, the average rate of reaction will be:}$ 2 218 Recommended Questions $\frac{[R_2] - [R_1]}{t_2 - t_1}$, $-\left(\frac{[R_2] - [R_1]}{t_2 - t_1}\right)$... 2 Edit Delete
18277 $\text{True statement among the following is:}$ 2 218 Recommended Questions $\text{The rate of a reaction decreases with the passage of time as the concentration of reactants decreases.}$, $\text{The rate of a reaction is the same at any time during the reaction.}$... 1 Edit Delete
18276 $\text{Consider the reaction } \text{A} \rightarrow \text{B}. \text{ The concentration of both the reactant and the product varies exponentially with time.}$ $\text{The graph that accurately depicts how reactant and product concentrations change with time is:}$ 2 218 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
18275 $\text{The rate equation of a reaction is expressed as, Rate = } k (P_{\text{CH}_3\text{OCH}_3})^{3/2}$ $\text{(Unit of rate = bar min}^{-1}\text{)}$ $\text{The units of the rate constant will be:}$ 2 218 Recommended Questions $\text{bar}^{1/2} \text{ min}$, $\text{bar}^2 \text{ min}^{-1}$... 4 Edit Delete
18274 $\text{For a reaction, } 2\text{A} + \text{B} \rightarrow \text{C} + \text{D}, \text{ the following observations were recorded:}$ $\begin{array}{|c|c|c|c|} \hline \text{Experiment} & [\text{A}]/\text{mol L}^{-1} & [\text{B}]/\text{mol L}^{-1} & \text{Initial rate of formation of D/mol L}^{-1} \text{ min}^{-1} \\ \hline \text{I} & 0.1 & 0.1 & 6.0 \times 10^{-3} \\ \text{II} & 0.3 & 0.2 & 7.2 \times 10^{-2} \\ \text{III} & 0.3 & 0.4 & 2.88 \times 10^{-1} \\ \text{IV} & 0.4 & 0.1 & 2.40 \times 10^{-2} \\ \hline \end{array}$ $\text{The rate law applicable to the above mentioned reaction would be:}$ 2 218 Recommended Questions $\text{Rate} = k[\text{A}]^2[\text{B}]^3$, $\text{Rate} = k[\text{A}][\text{B}]^2$... 2 Edit Delete
18273 $\text{Rate law for the reaction } A + 2B \rightarrow C \text{ is found to be}$ $\text{Rate} = k[\text{A}][\text{B}]$ $\text{If the concentration of reactant 'B' is doubled, keeping the concentration of A constant, then the value of the rate of the reaction will be:}$ 2 218 Recommended Questions $\text{The same.}$, $\text{Doubled.}$... 2 Edit Delete
18272 $\text{Match the items in Column I with Column II:}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Diamond to graphite conversion} & \text{1. Short interval of time} \\ \text{B. Instantaneous rate} & \text{2. Ordinarily rate of conversion is imperceptible} \\ \text{C. Average rate} & \text{3. Long duration of time} \\ \hline \end{array}$ $\text{Codes:}$ $\begin{array}{|c|c|c|c|} \hline & \text{A} & \text{B} & \text{C} \\ \hline 1. & 2 & 1 & 3 \\ 2. & 1 & 2 & 3 \\ 3. & 3 & 2 & 1 \\ 4. & 1 & 3 & 2 \\ \hline \end{array}$ 2 218 Recommended Questions $2 \ 1 \ 3$, $1 \ 2 \ 3$... 1 Edit Delete
18271 $\text{The decomposition of NH}_3 \text{ on a platinum surface is a zero-order reaction. The rates of production of N}_2 \text{ and H}_2 \text{ will be respectively:}$ $\text{(given ; } k = 2.5 \times 10^{-4} \text{ mol}^{-1} \text{ L s}^{-1} \text{)}$ 2 218 Recommended Questions $2.5 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1} \text{ and } 5.5 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1}$, $2.5 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1} \text{ and } 7.5 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1}$... 2 Edit Delete
18270 $\text{Which of the following statements about the order of reaction is incorrect?}$ 2 218 Recommended Questions $\text{Order is not influenced by the stoichiometric coefficient of the reactants.}$, $\text{Order of reaction is the sum of power to the concentration terms of reactants to express the rate of reaction.}$... 3 Edit Delete
18269 $\text{The rate constant of a particular reaction has the dimension of frequency. The order of the reaction is:}$ 2 218 Recommended Questions $\text{Zero.}$, $\text{First.}$... 2 Edit Delete
18268 $\text{For the reaction, } \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3, \text{ if, } \frac{d[\text{NH}_3]}{dt} = 2 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1},$ $\text{the value of } -\frac{d[\text{H}_2]}{dt} \text{ would be:}$ 2 218 Recommended Questions $3 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1}$, $4 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1}$... 1 Edit Delete
18267 $\text{During the formation of ammonia by Haber's process } \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3, \text{ the rate of appearance of NH}_3 \text{ was measured as } 2.5 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1}. \text{ The rate of disappearance of H}_2 \text{ will be:}$ 2 218 Recommended Questions $2.5 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1}$, $1.25 \times 10^{-4} \text{ mol L}^{-1} \text{ s}^{-1}$... 3 Edit Delete
18266 $\text{For the reaction,}$ $\text{N}_2\text{O}_5(g) \rightarrow 2\text{NO}_2(g) + \frac{1}{2}\text{O}_2(g)}$ $\text{the value of the rate of disappearance of } \text{N}_2\text{O}_5 \text{ is given as } 6.25 \times 10^{-3} \text{ mol L}^{-1}\text{s}^{-1}. \text{ The rate of formation of } \text{NO}_2 \text{ and } \text{O}_2 \text{ is given respectively as:}$ 2 218 Recommended Questions $6.25 \times 10^{-3} \text{ mol L}^{-1}\text{s}^{-1} \text{ and } 6.25 \times 10^{-3} \text{ mol L}^{-1}\text{s}^{-1}$, $1.25 \times 10^{-2} \text{ mol L}^{-1}\text{s}^{-1} \text{ and } 3.125 \times 10^{-3} \text{ mol L}^{-1}\text{s}^{-1}$... 2 Edit Delete
18265 $\text{A reaction is first-order with respect to A and second-order with respect to B.}$ $\text{The concentration of B is increased three times. The new rate of the reaction would:}$ 2 218 Recommended Questions $\text{Decrease 9 times}$, $\text{Increase 9 times}$... 2 Edit Delete
18264 $\text{The correct expression for the rate of reaction given below is:}$ $5\text{Br}^- (\text{aq}) + \text{BrO}_3^- (\text{aq}) + 6\text{H}^+ (\text{aq}) \rightarrow 3\text{Br}_2 (\text{aq}) + 3\text{H}_2\text{O} (\text{l})$ 2 218 Recommended Questions $\frac{\Delta [\text{Br}^-]}{\Delta t} = 5 \frac{\Delta [\text{H}^+]}{\Delta t}$, $\frac{\Delta [\text{Br}^-]}{\Delta t} = \frac{6}{5} \frac{\Delta [\text{H}^+]}{\Delta t}$... 3 Edit Delete
18263 $\text{For a general reaction A} \rightarrow \text{B, the plot of the concentration of A vs. time is given in the figure.}$ $\text{The slope of the curve will be:}$ 2 218 Recommended Questions $-k$, $-k/2$... 1 Edit Delete
18262 $\text{A depolariser used in dry cell batteries is:}$ 2 217 Recommended Questions $\text{Ammonium chloride}$, $\text{Manganese dioxide}$... 2 Edit Delete
18261 $\text{When a lead storage battery is discharged, then:}$ $1. \ \text{SO}_2 \ \text{is evolved.}$ $2. \ \text{Lead is formed.}$ $3. \ \text{Lead sulphate is consumed.}$ $4. \ \text{Sulphuric acid is consumed.}$ 2 217 Recommended Questions $\text{SO}_2 \ \text{is evolved.}$, $\text{Lead is formed.}$... 4 Edit Delete
18260 $\text{If hydrogen electrodes dipped in two solutions of pH} = 4 \text{ and pH} = 6 \text{ are connected by a salt bridge, the emf of the resulting cell is -}$ 2 217 Recommended Questions $0.177 \text{ V}$, $0.3 \text{ V}$... 3 Edit Delete
18259 $\text{The efficiency of a fuel cell is given by:}$ 2 217 Recommended Questions $\frac{\Delta H}{\Delta G}$, $\frac{\Delta G}{\Delta S}$... 3 Edit Delete
18258 $\text{What happens to the voltage in a galvanic cell when the salt bridge is removed?}$ 2 217 Recommended Questions $\text{The voltage drops to zero.}$, $\text{The voltage remains the same.}$... 1 Edit Delete
18257 $\text{A device that converts the energy of combustion of fuels, like hydrogen and methane, directly into electrical energy is known as:}$ 2 217 Recommended Questions $\text{Fuel cell.}$, $\text{Electrolytic cell.}$... 1 Edit Delete
18256 $\text{A solution containing one mole per litre each of Cu(NO}_3)_2, \text{AgNO}_3, \text{Hg}_2(\text{NO}_3)_2 \text{ and Mg(NO}_3)_2 \text{ is being electrolyzed by using inert electrodes. The values of standard electrode potentials in volt (reduction potentials) are,}$ $\text{Ag}^+/\text{Ag} = 0.80 \text{ V}, \text{Hg}_2^{2+}/2\text{Hg} = 0.79 \text{ V},$ $\text{Cu}^{2+}/\text{Cu} = +0.34 \text{ V and Mg}^{2+}/\text{Mg} = -2.37 \text{ V}$ $\text{With increasing voltage, the sequence of deposition of metals on the cathode will be:}$ 2 217 Recommended Questions $\text{Ag, Hg, Cu, Mg}$, $\text{Mg, Cu, Hg, Ag}$... 3 Edit Delete
18255 $\text{If an iron rod is dipped in } \text{CuSO}_4 \text{ solution, then:}$ $1. \text{Blue colour of the solution turns red.}$ $2. \text{Brown layer is deposited on iron rod.}$ $3. \text{No change occurs in the colour of the solution.}$ $4. \text{None of the above.}$ 2 217 Recommended Questions $\text{Blue colour of the solution turns red.}$, $\text{Brown layer is deposited on iron rod.}$... 2 Edit Delete
18254 $\text{The most stable oxidized species among the following is:}$ $E^\circ_{\text{Cr}_2\text{O}_7^{2-}/\text{Cr}^{3+}} = 1.33 \text{ V};$ $E^\circ_{\text{Cl}_2/\text{Cl}^-} = 1.36 \text{ V}$ $E^\circ_{\text{MnO}_4^-/\text{Mn}^{2+}} = 1.51 \text{ V};$ $E^\circ_{\text{Cr}^{3+}/\text{Cr}} = -0.74 \text{ V}$ 2 217 Recommended Questions $\text{Cr}^{3+}$, $\text{MnO}_4^-$... 1 Edit Delete
18253 $\text{The negative sign in the expression } E^\circ_{\text{Zn}^{2+}/\text{Zn}} = -0.76 \text{ V indicates:}$ $1. \text{ The reactivity of the metal increases.}$ $2. \text{ The reactivity of the metal decreases.}$ $3. \text{ There is no effect on the metal's reactivity.}$ $4. \text{ None of the above.}$ 2 217 Recommended Questions $\text{The reactivity of the metal increases.}$, $\text{The reactivity of the metal decreases.}$... 1 Edit Delete
18252 $\text{A hypothetical electrochemical cell is shown below.}$ $\text{A|A}^{+}(x\ \text{M})\ ||\ \text{B}^{+}(y\ \text{M})|\text{B}}$ $\text{The Emf measured is } +0.20\ \text{V. The cell reaction is:}$ 2 217 Recommended Questions $\text{A}^{+} + \text{B} \rightarrow \text{A} + \text{B}^{+}$, $\text{A}^{+} + \text{e}^{-} \rightarrow \text{A} ; \text{B}^{+} + \text{e}^{-} \rightarrow \text{B}$... 4 Edit Delete
18251 $\text{Without losing its concentration, ZnCl}_2 \text{ solution cannot be kept in contact with:}$ 2 217 Recommended Questions $\text{Au}$, $\text{Al}$... 2 Edit Delete
18250 $\text{When a copper wire is immersed in a solution of } \text{AgNO}_3, \text{ the colour of the solution becomes blue because copper:}$ $1. \text{ Forms a soluble complex with } \text{AgNO}_3$ $2. \text{ Is oxidised to } \text{Cu}^{2+}$ $3. \text{ Is reduced to } \text{Cu}^{2-}$ $4. \text{ Splits up into atomic form and dissolves}$ 2 217 Recommended Questions $\text{Forms a soluble complex with } \text{AgNO}_3$, $\text{Is oxidised to } \text{Cu}^{2+}$... 2 Edit Delete
18249 $\text{The standard reduction electrode potentials of three metals X, Y, and Z are given as } -1.2 \text{ V}, +0.5 \text{ V}, \text{ and } -3.0 \text{ V}, \text{ respectively. Based on these values, what is the correct order of their reducing power?}$ 2 217 Recommended Questions $Y > X > Z$, $Z > X > Y$... 2 Edit Delete
18248 $\text{Salt with the highest electrolytic conductivity in solution is:}$ 2 217 Recommended Questions $\text{K}_2[\text{PtCl}_6]$, $[\text{Co(NH}_3)_3(\text{NO}_2)_3]$... 3 Edit Delete
18247 $\text{When aqueous NaCl solution is electrolysed using inert electrodes then pH of the solution-}$ 2 217 Recommended Questions $\text{Increases.}$, $\text{Decreases.}$... 1 Edit Delete
18246 $\text{The correct statement about the given galvanic cell equation is -}$ $\text{Zn}_{(s)} + 2\text{Ag}^+_{(aq)} \rightarrow \text{Zn}^{2+}_{(aq)} + 2\text{Ag}_{(s)}$ 2 217 Recommended Questions $\text{The current will flow from silver to zinc in the external circuit.}$, $\text{The current will flow from zinc to silver in the external circuit.}$... 1 Edit Delete
18245 $\text{An electrochemical cell can behave like an electrolytic cell when -}$ 2 217 Recommended Questions $E_{\text{cell}} = 0$, $E_{\text{cell}} > E_{\text{ext}}$... 3 Edit Delete
18244 $\text{On electrolysis of dilute sulphuric acid using Platinum (Pt) electrode, the product obtained at the anode will be:}$ 2 217 Recommended Questions $\text{Oxygen gas}$, $\text{H}_2\text{S gas}$... 1 Edit Delete
18243 $\text{During discharge of a lead storage cell, the density of sulphuric acid in the cell-}$ 2 217 Recommended Questions $\text{Increases.}$, $\text{Decreases.}$... 2 Edit Delete
18242 $\text{The half-cell reaction at the anode during the electrolysis of aqueous sodium chloride solution is represented by:}$ 2 217 Recommended Questions $\text{Na}^+(\text{aq}) + e^- \rightarrow \text{Na}(\text{s}) ; \quad E^\circ_{\text{cell}} = -2.71 \text{ V}$, $2\text{H}_2\text{O}(\text{l}) \rightarrow \text{O}_2(\text{g}) + 4\text{H}^+(\text{aq}) + 4e^- ; \quad E^\circ_{\text{cell}} = 1.23 \text{ V}$... 4 Edit Delete
18241 $\text{For the electrolysis of CuSO}_4 \text{ solution the correct option is:}$ 2 217 Recommended Questions $\text{Cathode reaction: Cu}^{2+} + 2e^- \rightarrow \text{Cu using Cu electrode.}$, $\text{Anode reaction: Cu} \rightarrow \text{Cu}^+ + e^- \text{ using Cu electrode.}$... 1 Edit Delete
18240 $\text{The cell that will measure the standard electrode potential of a copper electrode is:}$ 2 217 Recommended Questions $\text{Pt(s) | H}_2\text{(g, } \frac{1}{10} \text{ bar) | H}^+\text{(aq, 1M) } || \text{ Cu}^{2+}\text{(aq, 1M) | Cu}$, $\text{Pt(s) | H}_2\text{(g, 1 bar) | H}^+\text{(aq, 1M) } || \text{ Cu}^{2+}\text{ (aq, 2M) | Cu}$... 3 Edit Delete
18239 $\text{Pairs of reactants (R) and product (P) are given below. The pair which can be used in a fuel cell is:}$ $1. \ R = \text{H}_2(g), \ \text{O}_2(g); \ P = \text{H}_2\text{O}_2(g)$ $2. \ R = \text{H}_2(g), \ \text{O}_2(g); \ P = \text{H}_2\text{O}(\ell)$ $3. \ R = \text{H}_2(g), \ \text{O}_2(g), \ \text{Cl}_2(g); \ P = \text{HClO}_4(aq)$ $4. \ R = \text{H}_2(g), \ \text{N}_2(g); \ P = \text{NH}_3(aq)$ 2 217 Recommended Questions $R = \text{H}_2(g), \ \text{O}_2(g); \ P = \text{H}_2\text{O}_2(g)$, $R = \text{H}_2(g), \ \text{O}_2(g); \ P = \text{H}_2\text{O}(\ell)$... 2 Edit Delete
18238 $\text{Passage of three faradays of charge through an aqueous solution of } \text{AgNO}_3, \text{CuSO}_4, \text{Al(NO}_3)_3, \text{ and NaCl will deposit moles of metals at the cathode in the molar ratio of:}$ 2 217 Recommended Questions $1 : 2 : 3 : 1$, $6 : 3 : 2 : 6$... 3 Edit Delete
18237 $\text{One liter of 0.5 M KCl solution is electrolyzed for one minute in a current of 1.608 mA. Considering 100 \% efficiency, the pH of the resulting solution will be:}$ 2 217 Recommended Questions $7$, $9$... 3 Edit Delete
18236 $\text{During electrolysis of conc. } \text{H}_2\text{SO}_4, \text{ perdisulphuric acid } (\text{H}_2\text{S}_2\text{O}_8), \text{ and } \text{O}_2 \text{ form in equimolar amount. The amount of } \text{H}_2 \text{ that will form simultaneously will be:}$ 2 217 Recommended Questions $\text{Thrice that of } \text{O}_2 \text{ in moles.}$, $\text{Twice that of } \text{O}_2 \text{ in moles.}$... 1 Edit Delete
18235 $\text{The quantity of electricity required to reduce } 12.3 \text{ g of nitrobenzene to aniline}$ $\text{with } 50\% \text{ current efficiency is:}$ 2 217 Recommended Questions $1 \text{ F}$, $0.6 \text{ F}$... 4 Edit Delete
18234 $\text{The weight of silver (atomic weight = 108) displaced by a quantity of electricity which displaces 5600 mL of } \text{O}_2 \text{ at STP will be:}$ 2 217 Recommended Questions $5.4 \text{ g}$, $10.8 \text{ g}$... 4 Edit Delete
18233 $\text{The coulombs of charge required for the oxidation of 1 mole of } \text{H}_2\text{O}_2 \text{ to } \text{O}_2 \text{ is:}$ 2 217 Recommended Questions $9.65 \times 10^4 \text{ C}$, $93000 \text{ C}$... 3 Edit Delete
18232 $\text{Three electrolytic cells A, B, C containing solutions of ZnSO}_4, \text{ AgNO}_3, \text{ and CuSO}_4, \text{ respectively are connected in series.}$ $\text{A steady current of 1.5 amperes was passed through them until 1.45 g of silver was deposited at the cathode of cell B. The current flow time is-}$ 2 217 Recommended Questions $\text{14 minutes}$, $\text{25 minutes}$... 1 Edit Delete
18231 $\text{Aluminium oxide may be electrolysed at } 1000 \ C \ \text{to furnish aluminium metal}$ $\text{(Atomic mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is:}$ $\text{Al}^{3+} + 3e^- \rightarrow \text{Al}$ $\text{To prepare } 5.12 \ \text{kg of aluminium metal by this method, would require:}$ 2 217 Recommended Questions $5.49 \times 10^7 \ C \ \text{of electricity}$, $1.83 \times 10^7 \ C \ \text{of electricity}$... 1 Edit Delete
18230 $\text{Adiponitrile is manufactured electrolytically from acrylonitrile. The reaction is as follows:}$ $\text{CH}_2 = \text{CHCN} \rightarrow \text{CN} - (\text{CH}_2)_4 - \text{CN}$ $\text{How many kg of adiponitrile (molecular mass = 108) is produced in 9.65 hr using a current of 3750 A with 80 \% efficiency?}$ 2 217 Recommended Questions $30 \text{ kg}$, $58 \text{ kg}$... 2 Edit Delete
18229 $\text{The quantity of charge required to obtain one mole of aluminium from } \text{Al}_2\text{O}_3 \text{ is:}$ 2 217 Recommended Questions $1 \text{ F}$, $6 \text{ F}$... 3 Edit Delete
18228 $\text{Al}_2\text{O}_3 \text{ is reduced by electrolysis at low potentials and high currents. If } 4.0 \times 10^4 \text{ A of current is passed through molten } \text{Al}_2\text{O}_3 \text{ for 6 hours, the mass of aluminum produced is:}$ $\text{(Assume 100 \% current efficiency, the atomic mass of Al = 27 g mol}^{-1}\text{)}$ 2 217 Recommended Questions $9.0 \times 10^3 \text{ g}$, $8.1 \times 10^4 \text{ g}$... 2 Edit Delete
18227 $\text{In producing chlorine through electrolysis, 100 W power at 125 V is being consumed.}$ $\text{The liberation of chlorine per min is:}$ $\text{(ECE of chlorine is } 0.367 \times 10^{-6} \text{ kg/C)}$ 2 217 Recommended Questions $17.6 \text{ mg}$, $21.3 \text{ mg}$... 1 Edit Delete
18226 $\text{For the reduction of silver ions with copper metal, the standard cell potential was found to be } +0.46 \text{ V at } 25 \degree \text{C. The value of standard Gibbs energy, } \Delta G^\circ \text{ will be:}$ $\text{(F = 96500 C mol}^{-1}\text{)}$ 2 217 Recommended Questions $-89.0 \text{ kJ}$, $-89.0 \text{ J}$... 1 Edit Delete
18225 $\text{A 100.0 mL dilute solution of } \text{Ag}^+ \text{ is electrolyzed for 15.0 minutes with a current of 1.25 mA and the silver is removed completely. The initial } [\text{Ag}^+] \text{ is:}$ 2 217 Recommended Questions $2.32 \times 10^{-1} \text{ M}$, $2.32 \times 10^{-4} \text{ M}$... 4 Edit Delete
18224 $\text{The number of electrons involved in the deposition of } 63.5 \text{ g of Cu from a solution of } \text{CuSO}_4 \text{ is:}$ 2 217 Recommended Questions $6.022 \times 10^{23}$, $3.011 \times 10^{23}$... 3 Edit Delete
18223 $\text{For the cell, Ti/Ti}^{+}(0.001\text{M})||\text{Cu}^{2+}(0.1\text{M})|\text{Cu}, E^\circ_{\text{cell}}$ $\text{at } 25\ ^\circ \text{C is } 0.83\ \text{V. } E_{\text{cell}} \text{ can be increased:}$ 2 217 Recommended Questions $\text{By increasing } [\text{Cu}^{2+}]$, $\text{By increasing } [\text{Ti}^{+}]$... 1 Edit Delete
18222 $\text{A steady current of } 1.5 \text{ A flows through a copper voltmeter for } 10 \text{ min. If the electrochemical equivalent of copper is } 30 \times 10^{-5} \text{ g C}^{-1}, \text{ the mass of copper deposited on the electrode will be:}$ 2 217 Recommended Questions $0.40 \text{ g}$, $0.50 \text{ g}$... 4 Edit Delete
18221 $\text{The number of Faradays required to produce 20.0 g of Ca from molten CaCl}_2 \text{ is-}$ 2 217 Recommended Questions $2F$, $1F$... 2 Edit Delete
18220 $\text{When 0.1 mol MnO}_4^{2-} \text{ is oxidized, the quantity of electricity required to completely oxidise MnO}_4^{2-} \text{ to MnO}_4^{-} \text{ is:}$ 2 217 Recommended Questions $96500 \text{ C}$, $2 \times 96500 \text{ C}$... 3 Edit Delete
18219 $\text{The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is:}$ $\text{(Charge on electron = 1.60} \times 10^{-19} \text{ C)}$ 2 217 Recommended Questions $6 \times 10^{23}$, $6 \times 10^{20}$... 3 Edit Delete
18218 $\text{The amount of charge required for the reduction of 1 mol of } \text{MnO}_4^- \text{ to } \text{Mn}^{2+} \text{ is -}$ 2 217 Recommended Questions $4.8 \times 10^5 \text{ C}$, $3.2 \times 10^6 \text{ C}$... 1 Edit Delete
18217 $\text{The electricity required in coulombs for the oxidation of 1 mole of } \text{FeO to } \text{Fe}_2\text{O}_3 \text{ is:}$ 2 217 Recommended Questions $964.87 \text{ C}$, $96487 \text{ C}$... 2 Edit Delete
18216 $\text{Consider the following graph of molar conductivity of KCl solution at different concentrations.}$ $\text{The value of limiting molar conductivity for KCl is } 150.0 \text{ S cm}^2 \text{ mol}^{-1}. \text{ The value of the slope at point A will be:}$ 2 217 Recommended Questions $120$, $100$... 2 Edit Delete
18215 $\text{Value of } \wedge_m^0 \text{ for } \text{SrCl}_2 \text{ (strong electrolyte) in water at } 25^\circ \text{C from the data below is:}$ $\begin{array}{|c|c|c|} \hline \text{Conc. (mol/litre)} & 0.25 & 1 \\ \hline \wedge_m \left(\Omega^{-1} \text{ cm}^2 \text{ mol}^{-1}\right) & 260 & 250 \\ \hline \end{array}$ 2 217 Recommended Questions $270 \ \Omega^{-1} \text{ cm}^2 \text{ mol}^{-1}$, $260 \ \Omega^{-1} \text{ cm}^2 \text{ mol}^{-1}$... 1 Edit Delete
18214 $\text{Kohlrausch's law states that at:}$ 2 217 Recommended Questions $\text{Finite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte, whatever be the nature of the other ion of the electrolyte.}$, $\text{Infinite dilution, each ion makes definite contribution to equivalent conductance of an electrolyte depending on the nature of the other ion of the electrolyte.}$... 4 Edit Delete
18213 The molar conductance of $\frac{M}{32}$ solution of a weak monobasic acid is $8.0 \text{ ohm}^{-1} \text{ cm}^2$ and at infinite dilution is $400 \text{ ohm}^{-1} \text{ cm}^2$. The dissociation constant of this acid is: 2 217 Recommended Questions 1.25 \times 10^{-5}, 1.25 \times 10^{-6}... 1 Edit Delete
18212 $\text{The resistance of a cell containing } 0.001 \text{ M KCl solution at } 298 \text{ K is } 1500 \, \Omega. \text{ The conductivity is } 0.146 \times 10^{-3} \, \text{S cm}^{-1}. \text{ The cell constant would be-}$ 2 217 Recommended Questions $0.12 \, \text{cm}^{-1}$, $0.56 \, \text{cm}^{-1}$... 3 Edit Delete
18211 $\text{The resistance of a conductivity cell containing 0.001 M KCl solution at 298 K is 1500 } \Omega. \text{ The cell constant if conductivity of 0.001 M KCl solution at 298 K is } 0.146 \times 10^{-3} \text{ S cm}^{-1} \text{ will be:}$ 2 217 Recommended Questions $0.32 \text{ cm}^{-1}$, $0.47 \text{ cm}$... 3 Edit Delete
18210 $\Lambda_m^\circ(\text{NH}_4\text{OH})$ $\text{is equal to -}$ 2 217 Recommended Questions $\Lambda_m^\circ(\text{NH}_4\text{OH}) + \Lambda_m^\circ(\text{NH}_4\text{Cl}) - \Lambda_m^\circ(\text{HCl})$, $\Lambda_m^\circ(\text{NH}_4\text{Cl}) + \Lambda_m^\circ(\text{NaOH}) - \Lambda_m^\circ(\text{NaCl})$... 2 Edit Delete
18209 $\text{Molar conductivities (}\Lambda_m^\circ\text{) at infinite dilution of NaCl, HCl, and CH}_3\text{COONa are 126.4, 425.9, and 91.0 S cm}^2\text{ mol}^{-1}\text{ respectively.}$ $\Lambda_m^\circ\text{ for CH}_3\text{COOH will be:}$ 2 217 Recommended Questions $180.5 \text{ S cm}^2\text{ mol}^{-1}$, $290.8 \text{ S cm}^2$... 3 Edit Delete
18208 $\text{The specific conductivity of a saturated solution of KI}_3 \text{ is } 4.59 \times 10^{-6} \text{ ohm}^{-1} \text{ cm}^{-1}$ $\text{and its molar conductance is } 1.53 \text{ ohm}^{-1} \text{ cm}^2 \text{ mol}^{-1}. \text{ The } K_{\text{sp}} \text{ of KI}_3 \text{ will be:}$ 2 217 Recommended Questions $4 \times 10^{-12}$, $27 \times 27 \times 10^{-9}$... 3 Edit Delete
18207 $\text{The specific conductance of a 0.01 M solution of a weak monobasic acid is } 0.20 \times 10^{-3} \text{ S cm}^{-1}. \text{ The dissociation constant of the acid is-}$ $\text{[Given } \Lambda_{\text{HA}}^{\infty} = 400 \text{ S cm}^2 \text{ mol}^{-1}]$ 2 217 Recommended Questions $5 \times 10^{-2}$, $2.5 \times 10^{-5}$... 2 Edit Delete
18206 $\text{(c) The unit of molar conductivity is S cm}^2 \text{ mol}^{-1}$ $\text{(d) Molar conductivity increases with an increase in concentration.}$ 2 217 Recommended Questions (a), (a) \text{ and } (d)... 2 Edit Delete
18205 $\text{The specific conductivity of a solution depends upon:}$ $1. \text{Number of ions as well as mobility of ions.}$ $2. \text{Number of ions per cc or (cm}^3\text{) of solution.}$ $3. \text{Number of ions per cc or (cm}^3\text{) as well as mobilities of ions.}$ $4. \text{Mobilities of ions.}$ 2 217 Recommended Questions $\text{Number of ions as well as mobility of ions.}$, $\text{Number of ions per cc or (cm}^3\text{) of solution.}$... 3 Edit Delete
18204 $\text{The conductivity of } 0.00241 \text{ M acetic acid is } 7.896 \times 10^{-5} \text{ S cm}^{-1}. \text{ If } \Lambda_m^0 \text{ for acetic acid is } 390.5 \text{ S cm}^2 \text{ mol}^{-1}, \text{ the dissociation constant will be}$ 2 217 Recommended Questions $2.45 \times 10^{-5} \text{ mol L}^{-1}$, $1.86 \times 10^{-5} \text{ mol L}^{-1}$... 2 Edit Delete
18203 $\lambda_m^0(\text{H}_2\text{SO}_4) = x \ S \ \text{cm}^2 \ \text{mol}^{-1}$ $\lambda_m^0(\text{K}_2\text{SO}_4) = y \ S \ \text{cm}^2 \ \text{mol}^{-1}$ $\lambda_m^0(\text{CH}_3\text{COOK}) = z \ S \ \text{cm}^2 \ \text{mol}^{-1}$ $\text{From the data given above, it can be concluded that } \lambda_m^0 \text{ in } (S \ \text{cm}^2 \ \text{mol}^{-1}) \text{ for CH}_3\text{COOH will be:}$ 2 217 Recommended Questions $x - y + 2z$, $x + y + z$... 4 Edit Delete
18202 $\text{The incorrect statement about the solution of electrolytes is:}$ 2 217 Recommended Questions $\text{Conductivity of solution depends upon the size of ions.}$, $\text{Conductivity depends upon the viscosity of solution.}$... 3 Edit Delete
18201 $\text{At 25 °C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is } 9.54 \, \Omega^{-1} \text{ cm}^2 \text{ mol}^{-1} \text{ and at infinite dilution its molar conductance is } 238 \, \Omega^{-1} \text{ cm}^2 \text{ mol}^{-1}. \text{ The degree of ionisation of ammonium hydroxide at the same concentration and temperature is:}$ 2 217 Recommended Questions $2.080 \%$, $20.800 \%$... 3 Edit Delete
18200 $\text{Consider the following graph.}$ $\Lambda_m \,(\text{S cm}^2\text{mol}^{-1})$ $c^{1/2}\,\text{(mol/L)}^{1/2}$ $\text{The strong electrolyte in the above graph is represented by:}$ 2 217 Recommended Questions $\text{X}$, $\text{Y}$... 1 Edit Delete
18199 $\text{The cell constant of a conductivity cell-}$ 2 217 Recommended Questions $\text{Changes with the change of electrolyte.}$, $\text{Changes with the change of concentration of electrolyte.}$... 4 Edit Delete
18198 $\text{The unit of specific conductance is:}$ 2 217 Recommended Questions $\text{ohm}^{-1} \ \text{cm}^{-1}$, $\text{ohm} \ \text{cm}$... 1 Edit Delete
18197 $\text{The molar conductivity of a } 0.5 \text{ mol/dm}^3 \text{ solution of } \text{AgNO}_3 \text{ with electrolytic conductivity of } 5.76 \times 10^{-3} \text{ S cm}^{-1} \text{ at } 298 \text{ K is:}$ 2 217 Recommended Questions $11.5 \text{ S cm}^2/\text{mol}$, $21.5 \text{ S cm}^2/\text{mol}$... 1 Edit Delete
18196 $\text{The conductivity of 0.20 M solution of KCl at 298 K is 0.0248 S cm}^{-1}. \text{ The molar conductivity will be -}$ 2 217 Recommended Questions $124 \text{ S cm}^2 \text{ mol}^{-1}$, $134 \text{ S cm}^2 \text{ mol}^{-1}$... 1 Edit Delete
18195 $\text{The } k = 4.95 \times 10^{-5} \text{ S cm}^{-1} \text{ for a } 0.00099 \text{ M solution. The reciprocal of the degree of dissociation of acetic acid, if } \wedge^0_m \text{ for acetic acid is } 400 \text{ S cm}^2\text{mol}^{-1} \text{ will be:}$ 2 217 Recommended Questions $7$, $8$... 2 Edit Delete
18194 $\text{The specific conductance of a } 0.1 \text{ M KCl solution at } 23^\circ \text{C is } 0.012 \, \Omega^{-1} \text{ cm}^{-1}. \text{ The resistance of the cell containing the solution at the same temperature was found to be } 55 \, \Omega. \text{ The cell constant will be:}$ 2 217 Recommended Questions $0.142 \, \text{cm}^{-1}$, $0.66 \, \text{cm}^{-1}$... 2 Edit Delete
18193 $\text{At } 25^\circ \text{C, the standard emf of a cell reaction involving a two-electron exchange is found to be } 0.295 \text{ V. The equilibrium constant of the reaction is approximately:}$ 2 217 Recommended Questions $9.50 \times 10^9$, $9.51 \times 10^7$... 4 Edit Delete
18192 $\Delta G^\circ \text{ for the reaction given below is:}$ $\frac{1}{2} \text{A(g)} + \frac{3}{2} \text{B(g)} \rightleftharpoons \text{C(g)}$ $(K_{\text{eq}} = 826 \ \text{atm}^{-1} \ \text{at} \ 298 \ \text{K})$ 2 217 Recommended Questions $-8.32 \ \text{kJ}$, $8.32 \ \text{kJ}$... 4 Edit Delete
18191 $\text{A fuel cell develops an electrical potential from the combustion of butane at 1 bar and 298 K}$ $\text{C}_4\text{H}_{10}(g) + 6.5\text{O}_2(g) \rightarrow 4\text{CO}_2(g) + 5\text{H}_2\text{O}(l); \text{E}^\circ \text{ of a cell is:}$ $\text{(Given } \Delta G^\circ = -2746 \text{ kJ/mole)}$ 2 217 Recommended Questions $4.74 \text{ V}$, $0.547 \text{ V}$... 4 Edit Delete
18190 $\text{The equilibrium constant of the reaction:}$ $\text{Cu (s) + 2Ag}^+ \text{ (aq)} \rightarrow \text{Cu}^{2+} \text{ (aq) + 2Ag (s)};$ $E^\circ = 0.46 \text{ V at 298 K is:}$ 2 217 Recommended Questions $2.4 \times 10^{10}$, $2.0 \times 10^{10}$... 4 Edit Delete
18189 $\text{The cell in which the following reactions occurs:}$ $2\text{Fe}^{3+}_{(aq)} + 2\text{I}^-_{(aq)} \rightarrow 2\text{Fe}^{2+}_{(aq)} + \text{I}_2_{(s)} \text{ has } E^\circ_{\text{cell}} = 0.236 \text{ V at } 298 \text{ K.}$ $\text{The equilibrium constant of the cell reaction is:}$ 2 217 Recommended Questions $9.57 \times 10^7$, $8.43 \times 10^6$... 1 Edit Delete
18188 $\text{The equilibrium constant of a 2 electron redox reaction at 298 K is } 3.8 \times 10^{-3}. \text{ The cell potential } E^\circ \text{ (in V) and the free energy change } \Delta G^\circ \text{ (in kJ mol}^{-1}\text{) for this equilibrium respectively, are -}$ 2 217 Recommended Questions $-0.071, -13.8$, $-0.071, 13.8$... 2 Edit Delete
18187 $\text{The useful work of the reaction } \text{Ag}(s) + \frac{1}{2}\text{Cl}_2(g) \rightarrow \text{AgCl}(s) \text{ is:}$ $\text{Given,}$ $E^\circ_{\text{Cl}_2/\text{Cl}^-} = +1.36 \text{ V},$ $E^\circ_{\text{AgCl}/\text{Ag},\text{Cl}^-} = 0.22 \text{ V},$ $P_{\text{Cl}_2} = 1 \text{ atm and}$ $T = 298 \text{K}$ 2 217 Recommended Questions $-110 \text{ kJ/mol}$, $220 \text{ kJ/mol}$... 1 Edit Delete
18186 $\text{On the electrolysis of brine (aq NaCl solution):}$ $1.\ \text{pH of the solution will rise.}$ $2.\ \text{pH of the solution will fall.}$ $3.\ \text{No change in the pH of the solution.}$ $4.\ \text{None of the above.}$ 2 217 Recommended Questions $\text{pH of the solution will rise.}$, $\text{pH of the solution will fall.}$... 1 Edit Delete
18185 $\text{Given cell:}$ $\text{Pt(s)}|\text{H}_2(g)(P = 1 \text{ atm})| \text{CH}_3\text{COOH}(0.1 \text{ M}), \text{HCl}(0.1 \text{ M}) || \text{KCl(aq)}|\text{Hg}_2\text{Cl}_2(s)|\text{Hg}$ $\text{EMF of the cell is found to be } 0.045 \text{ V at } 298 \text{ K and the temperature coefficient is } 3.4 \times 10^{-4} \text{ V K}^{-1}. \text{ The cell entropy change of the following cell is:}$ $\text{[Given } K_a \text{ CH}_3\text{COOH} = 10^{-5} \text{ M]}$ 2 217 Recommended Questions $70.8 \text{ J K}^{-1} \text{ mol}^{-1}$, $65.2 \text{ J K}^{-1} \text{ mol}^{-1}$... 2 Edit Delete
18184 $\text{For a cell involving one electron } E^\circ_{\text{cell}} = 0.59 \text{ V at } 298 \text{ K.}$ $\text{The equilibrium constant for the cell reaction is:}$ $\left[ \text{Given that } \frac{2.303 \ RT}{F} = 0.059 \text{ V at } T = 298 \text{K} \right]$ 2 217 Recommended Questions $1.0 \times 10^{30}$, $1.0 \times 10^{2}$... 4 Edit Delete
18183 38 2 217 Recommended Questions 1, 2... 4 Edit Delete
18182 $\text{For the cell reaction}$ $2\text{Fe}^{3+}(\text{aq}) + 2\text{I}^-(\text{aq}) \rightarrow 2\text{Fe}^{2+}(\text{aq}) + \text{I}_2(\text{aq})$ $E^\circ_{\text{cell}} = 0.24 \text{ V at 298 K.}$ $\text{The standard Gibbs energy } \Delta_rG^\circ \text{ of the cell reaction is:}$ $[\text{Given: F} = 96500 \text{ C mol}^{-1}]$ 2 217 Recommended Questions 23.16 \text{ kJ mol}^{-1}, -46.32 \text{ kJ mol}^{-1}... 2 Edit Delete
18181 $\text{A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH} = 10 \text{ and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of the electrode would be:}$ 2 217 Recommended Questions $0.59 \text{ V}$, $0.118 \text{ V}$... 1 Edit Delete
18180 $\text{The value of } \Delta G^\circ \text{ in the reaction below would be:}$ $\text{Zn(s) + Ag}_2\text{O(s)} + \text{H}_2\text{O(l)} \rightarrow \text{Zn}^{+2}\text{(aq)} + 2\text{Ag(s)} + 2\text{OH}^-\text{(aq)}$ $\text{Given: } E^\circ_{\text{cell}} = 1.04V$ 2 217 Recommended Questions $-2.13 \text{ kJ}$, $-21.3 \text{ kJ}$... 3 Edit Delete
18179 $\text{What is the correct order of ionic mobility of the following ions in an aqueous solution?}$ 2 217 Recommended Questions $\text{K}^+ > \text{Na}^+ > \text{Rb}^+ > \text{Cs}^+$, $\text{Cs}^+ > \text{Rb}^+ > \text{K}^+ > \text{Na}^+$... 2 Edit Delete
18178 $\text{For a reaction A(s) + 2B}^+ \rightarrow \text{A}^{2+} + 2\text{B(s)} ; \ K_C \text{ has been found to be } 10^{12}. \text{ The } E^\circ_{\text{cell}} \text{ is:}$ 2 217 Recommended Questions $0.35 \text{ V}$, $0.71 \text{ V}$... 1 Edit Delete
18177 $\text{Given:}$ $\text{(i) Cu}^{2+} + 2e^- \rightarrow \text{Cu} \quad E^\circ = 0.337 \text{ V}$ $\text{(ii) Cu}^+ + e^- \rightarrow \text{Cu} \quad E^\circ = 0.153 \text{ V}$ $\text{Electrode potential, } E^\circ \text{ for the reaction, } \text{Cu}^+ + e^- \rightarrow \text{Cu, will be:}$ 2 217 Recommended Questions 0.52 \text{ V}, 0.90 \text{ V}... 1 Edit Delete
18176 $\text{Fe}^{2+}(\text{aq}) + \text{Ag}^+(\text{aq}) \rightarrow \text{Fe}^{3+}(\text{aq}) + \text{Ag}(\text{s})$ $E^\circ_{\text{Fe}^{3+}/\text{Fe}^{2+}} = 0.77 \text{ V}; \; E^\circ_{\text{Ag}^+/\text{Ag}} = 0.80 \text{ V}$ $\text{The value of } \Delta G_r^\circ \text{ in the above reaction will be:}$ 2 217 Recommended Questions $+2.89 \text{ kJ}$, $-2.89 \text{ kJ}$... 2 Edit Delete
18175 $\text{The value of } E_{\text{cell}} \text{ in the reaction below will be:}$ $\text{Pt}(s)|\text{Br}^- (0.010\ M)|\text{Br}_2(l) || \text{H}^+ (0.030\ M)|\text{H}_2(g)(1\ \text{bar})|\text{Pt}(s)$ $E^\circ_{\text{Br}^- / \text{Br}_2} = -1.09\ \text{V}$ 2 217 Recommended Questions +1.298\ \text{V}, -1.398\ \text{V}... 3 Edit Delete
18174 $\text{Cu(s)}|\text{Cu}^{+2}(10^{-3} \text{ M}) || \text{Ag}^+(10^{-5} \text{ M})|\text{Ag(s)}$ $\text{if } E^\circ_{\text{Cu}^{+2}/\text{Cu}} = +0.34 \text{ V, and } E^\circ_{\text{Ag}^+/\text{Ag}} = +0.80 \text{ V}$ $E_{\text{cell}} \text{ will be:}$ 2 217 Recommended Questions $0.46 \text{ V}$, $0.46 - \frac{RT}{2F} \ln 10^7$... 2 Edit Delete
18173 $\text{Given the following cell:}$ $\text{Pt}(s)|\text{Br}_2(l)|\text{Br}^- (0.010 \ M) ||\text{H}_2(g)(1 \ \text{bar})|\text{H}^+(0.030 \ M)|\text{Pt}(s)$ $\text{If the concentration of } \text{Br}^- \text{ becomes 2 times and the concentration of } \text{H}^+ \text{ becomes half of the initial value, then emf of the cell will become:}$ 2 217 Recommended Questions $\text{Two times.}$, $\text{Four times.}$... 4 Edit Delete
18172 $\text{At 298 K the Emf of the following cell is:}$ $\text{Pt|H}_2(1 \text{ atm})|\text{H}^+(0.02 \text{ M}) || \text{H}^+(0.01 \text{ M})|\text{H}_2(1 \text{ atm})|\text{Pt}$ 2 217 Recommended Questions $-0.017 \text{ V}$, $0.0295 \text{ V}$... 1 Edit Delete
18171 $\text{The change in reduction potential of a hydrogen electrode when its solution}$ $\text{initially at pH = 0 is neutralised to pH = 7, is a/an-}$ 2 217 Recommended Questions $\text{Increase by 0.059 V}$, $\text{Decrease by 0.059 V}$... 4 Edit Delete
18170 $\text{By how much will the potential of half cell Cu}^{2+}\mid\text{Cu change if the solution is diluted to 100 times at 298 K. It will -}$ 2 217 Recommended Questions $\text{Increase by 59 mV}$, $\text{Decrease by 59 mV}$... 2 Edit Delete
18169 $\text{The electrode potential for Mg electrode varies according to the equation}$ $E_{\text{Mg}^{2+}/\text{Mg}} = E^\circ_{\text{Mg}^{2+}/\text{Mg}} - \frac{0.059}{2} \log \frac{1}{[\text{Mg}^{2+}]}$ $\text{The graph of } E_{\text{Mg}^{2+}/\text{Mg}} \text{ vs } \log [\text{Mg}^{2+}] \text{ among the following is:}$ 2 217 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
18168 $\text{The voltage of the cell given below increases with:}$ $\text{Cell: Sn(s) + 2Ag}^+(\text{aq}) \rightarrow \text{Sn}^{2+}(\text{aq}) + 2\text{Ag}(\text{s})$ 2 217 Recommended Questions $\text{Increase in size of the silver rod.}$, $\text{Increase in the concentration of Sn}^{2+} \text{ ions.}$... 3 Edit Delete
18167 $\text{Consider the following cell reaction}$ $2\text{Fe(s)} + \text{O}_2\text{(g)} + 4\text{H}^+\text{(aq)} \rightarrow 2\text{Fe}^{2+}\text{(aq)} + 2\text{H}_2\text{O(l)}$ $E^\circ = 1.67 \text{ V}, \text{ At } [\text{Fe}^{2+}] = 10^{-3} \text{ M}, P_{\text{O}_2} = 0.1 \text{ atm and pH} = 3, \text{ the cell potential at } 25\, ^\circ \text{C is:}$ 2 217 Recommended Questions 1.27 \text{ V}, 1.77 \text{ V}... 4 Edit Delete
18166 $\text{The electrode potential of Cu electrode dipped in 0.025 M CuSO}_4 \text{ solution at 298 K is:}$ $\text{(standard reduction potential of Cu = 0.34 V)}$ 2 217 Recommended Questions $0.047 \text{ V}$, $0.293 \text{ V}$... 2 Edit Delete
18165 $\text{In the electrochemical cell:}$ $\text{Zn|ZnSO}_4(0.01 \text{ M}) \parallel \text{CuSO}_4(1.0 \text{M}),\text{Cu, the emf of this Daniel cell is } E_1.$ $\text{When the concentration of ZnSO}_4 \text{ is changed to 1.0 M and that of CuSO}_4 \text{ is changed to 0.01 M, the emf changes to } E_2.$ $\text{The relationship between } E_1 \text{ and } E_2 \text{ is:}$ $\text{(Given, } \frac{RT}{F} = 0.059)$ 2 217 Recommended Questions $E_1 = E_2$, $E_1 < E_2$... 3 Edit Delete
18164 $\text{The pressure of } \text{H}_2 \text{ required to make the potential of H}_2 \text{ - electrode zero in pure water at } 298 \text{ K is:}$ 2 217 Recommended Questions $10^{-12} \text{ atm}$, $10^{-10} \text{ atm}$... 4 Edit Delete
18163 $\text{The incorrect statement about an inert electrode in a cell is:}$ 2 217 Recommended Questions $\text{It does not participate in the cell reaction.}$, $\text{It provides a surface either for oxidation or for the reduction reaction.}$... 4 Edit Delete
18162 $\text{Electrode potential is the potential difference between the -}$ 2 217 Recommended Questions $\text{Electrode and the electrolyte.}$, $\text{Anode and Cathode.}$... 1 Edit Delete
18161 $\text{Calculate the emf of the given cell:}$ $\text{Zn(s)} \mid \text{Zn}^{+2} \text{ (0.1M)} \parallel \text{Sn}^{+2} \text{ (0.001M)} \mid \text{Sn(s)}$ $\text{(Given } E^0_{\text{Zn}^{+2}/\text{Zn}} = -0.76 \text{ V}, E^0_{\text{Sn}^{+2}/\text{Sn}} = -0.14 \text{ V})$ 2 217 Recommended Questions 0.62 \text{ V}, 0.56 \text{ V}... 2 Edit Delete
18160 $\text{The standard reduction potential for } \text{Fe}^{2+}|\text{Fe} \text{ and } \text{Sn}^{2+}|\text{Sn} \text{ electrodes are } -0.44 \text{ V and } -0.14 \text{ V respectively. For the cell reaction,}$ $\text{Fe}^{2+} + \text{Sn} \rightarrow \text{Fe} + \text{Sn}^{2+}, \text{ the standard Emf is -}$ 2 217 Recommended Questions $+0.30 \text{ V}$, $0.58 \text{ V}$... 4 Edit Delete
18159 $\text{The maximum work which can be obtained from a Daniel cell}$ $\text{Zn}_{(s)} \mid \text{Zn}^{+2}_{(aq)} \parallel \text{Cu}^{+2}_{(aq)} \mid \text{Cu}_{(s)} \text{ is:}$ $\begin{array}{c|c} E^\circ_{\text{Zn}^{2+}/\text{Zn}} & -0.76 \text{ V} \\ \hline E^\circ_{\text{Cu}^{2+}/\text{Cu}} & 0.34 \text{ V} \end{array}$ 2 217 Recommended Questions +106.15 \text{ kJ}, -212.3 \text{ kJ}... 2 Edit Delete
18158 $\text{Based on electrode potentials in the table below:}$ $\begin{array}{c|c} \text{Cu}^{2+}(\text{aq}) + \text{e}^- \rightarrow \text{Cu}^+(\text{aq}) & 0.15 \text{ V} \\ \text{Cu}^+(\text{aq}) + \text{e}^- \rightarrow \text{Cu}(\text{s}) & 0.50 \text{ V} \end{array}$ $\text{The value of } E^\circ_{\text{Cu}^{2+}/\text{Cu}} \text{ will be:}$ 2 217 Recommended Questions $0.325 \text{ V}$, $0.650 \text{ V}$... 1 Edit Delete
18157 $\text{Consider the change in the oxidation state of Bromine corresponding to different emf values as shown in the diagram below:}$ $\text{BrO}_4^- \xrightarrow{1.82V} \text{BrO}_3^- \xrightarrow{1.5V} \text{HBrO} \xrightarrow{1.595V} \text{Br}_2 \xrightarrow{1.065V} \text{Br}^- $ $\text{Then the species undergoing disproportionation is:}$ 2 217 Recommended Questions $\text{BrO}_3^-$, $\text{BrO}_4^-$... 4 Edit Delete
18156 $\text{The correct statement among the following options is:}$ 2 217 Recommended Questions $E_{\text{cell}} \text{ and } \Delta_r G \text{ of cell reaction are both extensive properties.}$, $E_{\text{cell}} \text{ and } \Delta_r G \text{ of cell reaction are both intensive properties.}$... 3 Edit Delete
18155 $\text{Consider the following relations for emf of an electrochemical cell:}$ $\text{(a) emf of cell} = (\text{Oxidation potential of anode}) - (\text{Reduction potential of cathode})$ $\text{(b) emf of cell} = (\text{Oxidation potential of anode}) + (\text{Reduction potential of cathode})$ $\text{(c) emf of cell} = (\text{Reduction potential of anode}) + (\text{Reduction potential of cathode})$ $\text{(d) emf of cell} = (\text{Oxidation potential of anode}) - (\text{Oxidation potential of cathode})$ $\text{The correct relation among the given options is:}$ 2 217 Recommended Questions $\text{(a) and (b)}$, $\text{(c) and (d)}$... 3 Edit Delete
18154 $\text{If } E^\circ_{\text{Fe}^{2+}/\text{Fe}} = -0.441 \text{ V and } E^\circ_{\text{Fe}^{3+}/\text{Fe}^{2+}} = 0.771 \text{ V, the standard emf of the reaction:}$ $\text{Fe} + 2\text{Fe}^{3+} \rightarrow 3\text{Fe}^{2+} \text{ will be:}$ 2 217 Recommended Questions 0.330 \text{ V}, 1.653 \text{ V}... 3 Edit Delete
18153 $\text{If } E^0_{\text{Fe}^{2+}/\text{Fe}} = -0.441 \text{ V and } E^0_{\text{Fe}^{3+}/\text{Fe}^{2+}} = 0.771 \text{ V, the standard emf of the reaction:}$ $\text{Fe} + 2\text{Fe}^{3+} \rightarrow 3\text{Fe}^{2+} \text{ will be:}$ 2 217 Recommended Questions $0.330 \text{ V}$, $1.653 \text{ V}$... 3 Edit Delete
18152 $\text{A gas X at 1 atm is bubbled through a solution containing a mixture of 1 M Y}^- \text{ and 1 M Z}^- \text{ at 25 } ^\circ \text{C. If the reduction potential of } Z > Y > X, \text{ then:}$ 2 217 Recommended Questions $\text{Y will oxidize X but not Z.}$, $\text{Y will oxidize Z but not X.}$... 1 Edit Delete
18151 $\text{The difference between the electrode potentials of two electrodes when no current is drawn through the cell is called:}$ 2 217 Recommended Questions $\text{Cell potential.}$, $\text{Cell emf.}$... 2 Edit Delete
18150 $\text{The metal that cannot be produced upon reduction of its oxide by aluminium is:}$ 2 217 Recommended Questions $\text{K}$, $\text{Mn}$... 1 Edit Delete
18149 $\text{Molten sodium chloride conducts electricity due to the presence of:}$ 2 217 Recommended Questions $\text{Free ions.}$, $\text{Free molecules.}$... 1 Edit Delete
18148 $\text{Given the standard electrode potentials:}$ $\begin{array}{l} \text{K}^+/\text{K} = -2.93\, \text{V} \\ \text{Ag}^+/\text{Ag} = 0.80\, \text{V} \\ \text{Hg}^{2+}/\text{Hg} = 0.79\, \text{V} \\ \text{Mg}^{2+}/\text{Mg} = -2.37\, \text{V} \\ \text{Cr}^{3+}/\text{Cr} = -0.74\, \text{V} \end{array}$ $\text{The correct increasing order of reducing power of the metals is:}$ 2 217 Recommended Questions $\text{Cr} < \text{Mg} < \text{K} < \text{Ag} < \text{Hg}$, $\text{Mg} < \text{K} < \text{Ag} < \text{Hg} < \text{Cr}$... 4 Edit Delete
18147 $\text{A button cell used in watches functions as following}$ $\text{Zn(s)} + \text{Ag}_2\text{O(s)} + \text{H}_2\text{O(l)} \rightleftharpoons 2\text{Ag(s)} + \text{Zn}^{2+}\text{(aq)} + 2\text{OH}^-\text{(aq)}$ $\text{If half-cell potentials are-}$ $\begin{array}{c|c} \text{Zn}^{2+}\text{(aq)} + 2\text{e}^- \rightarrow \text{Zn(s)} & E^\circ = -0.76 \text{ V} \\ \text{Ag}_2\text{O(s)} + \text{H}_2\text{O(l)} + 2\text{e}^- \rightarrow 2\text{Ag(s)} + 2\text{OH}^-\text{(aq)} & E^\circ = 0.34 \text{ V} \end{array}$ $\text{The cell potential will be:}$ 2 217 Recommended Questions $0.42 \text{ V}$, $0.84 \text{ V}$... 4 Edit Delete
18146 $\text{The standard electrode potential for } \text{Sn}^{4+}/\text{Sn}^{2+} \text{ couple is } +0.15 \text{ V and that for the } \text{Cr}^{3+}/\text{Cr} \text{ couple is } -0.74 \text{ V. These two couples in their standard state are connected to make a cell. The cell potential will be:}$ 2 217 Recommended Questions $+0.89 \text{ V}$, $+0.18 \text{ V}$... 1 Edit Delete
18145 $\text{Three aqueous solutions of NaCl are labelled as 'A', 'B' and 'C' with concentrations 0.1 M, 0.01 M and 0.001 M, respectively. The value of van't Hoff factor for these solutions will be in the order of:}$ 2 216 Recommended Questions $i_A < i_B < i_C$, $i_A > i_B > i_C$... 3 Edit Delete
18144 $\text{If the relative decrease in vapour pressure is } 0.4 \text{ for a solution containing } 1 \text{ mol NaCl in } 3 \text{ mol of } \text{H}_2\text{O, then percentage ionisation of NaCl will be -}$ 2 216 Recommended Questions $60\%$, $80\%$... 4 Edit Delete
18143 $0.5$ $\text{molal aqueous solution of a weak acid (HX) is } 20\% \text{ ionised. The lowering in the freezing point of the solution will be:}$ $[K_f \text{ for water } = 1.86 \text{ K kg mol}^{-1}]$ 2 216 Recommended Questions $-1.12 \text{ K}$, $0.56 \text{ K}$... 3 Edit Delete
18142 $17.4 \% \text{ (w/v) } \text{K}_2\text{SO}_4 \text{ solution at } 27^\circ \text{C is isotonic to } 5.85 \% \text{ (w/v) NaCl solution at } 27^\circ \text{C.}$ $\text{If NaCl is 100 \% ionised, the \% ionisation of } \text{K}_2\text{SO}_4 \text{ in aqueous solution is-}$ $[\text{At wt. of K = 39, Na = 23}]$ 2 216 Recommended Questions $25 \%$, $75 \%$... 3 Edit Delete
18141 $\text{A 0.0020 m aqueous solution of an ionic compound Co(NH}_3\text{)}_5\text{(NO}_2\text{)Cl freezes at } -0.0073 \, ^\circ\text{C. The number of moles of ions that 1 mol of ionic compound produces on being dissolved in water will be:}$ $\text{(}k_f = -1.86 \, ^\circ\text{C/m)}$ 2 216 Recommended Questions $2$, $3$... 1 Edit Delete
18140 $\text{The van't Hoff factor (i) for a dilute aqueous solution of a strong electrolyte barium hydroxide is:}$ $1.\ 0$ $2.\ 1$ $3.\ 2$ $4.\ 3$ 2 216 Recommended Questions $0$, $1$... 4 Edit Delete
18139 $\text{The van't Hoff factor of a } 0.005 \text{ M aqueous solution of KCl is } 1.95. \text{ The degree of ionisation of KCl is-}$ 2 216 Recommended Questions $0.95$, $0.97$... 1 Edit Delete
18138 $\text{The van't Hoff factor, } i, \text{ for a compound that undergoes}$ $\text{dissociation and association in a solvent is, respectively:}$ 2 216 Recommended Questions $\text{Less than one and less than one.}$, $\text{Greater than one and less than one.}$... 2 Edit Delete
18137 $\text{The Van't Hoff factor for 0.1 M Ba(NO}_3)_2 \text{ solution is 2.74. The degree of dissociation is -}$ 2 216 Recommended Questions $91.3 \%$, $87 \%$... 2 Edit Delete
18136 $\text{The electrolyte having the same value of Van't Hoff factor (i) as that of } \text{Al}_2(\text{SO}_4)_3 \text{ (if all are 100\% ionized) is:}$ 2 216 Recommended Questions $\text{K}_2\text{SO}_4$, $\text{K}_3[\text{Fe(CN)}_6]$... 4 Edit Delete
18135 $\text{The type of inter molecular interactions present in}$ $\begin{array}{ll} (a) \ \text{Methanol and Acetone} & (i) \ \text{Van der Waal's forces of attraction} \\ (b) \ \text{Acetonitrile and Acetone} & (ii) \ \text{ion-dipole interaction} \\ & (iii) \ \text{dipole-dipole interaction} \end{array}$ 2 216 Recommended Questions $(iii) \ (ii)$, $(ii) \ (ii)$... 3 Edit Delete
18134 $\text{Which of the following mixtures forms the maximum boiling azeotrope?}$ 2 216 Recommended Questions $\text{Heptane + Octane}$, $\text{Water + Nitric acid}$... 2 Edit Delete
18133 $\text{The type of inter-molecular interactions present in:}$ $\begin{array}{|c|c|} \hline \text{(a)} & \text{n-Hexane and n-octane} & \text{(i)} & \text{Van der Waal's forces of attraction} \\ \text{(b)} & \text{NaClO}_4 \text{ and water} & \text{(ii)} & \text{Ion-dipole interaction} \\ & & \text{(iii)} & \text{Dipole-dipole interaction} \\ \hline \end{array}$ 2 216 Recommended Questions $(a) \ (i) \ \ (b) \ (ii)$, $(a) \ (ii) \ \ (b) \ (iii)$... 1 Edit Delete
18132 $\text{The azeotropic mixture of water and ethanol boils at } 78.15 \, ^\circ\text{C. When this mixture is distilled, it is possible to obtain-}$ 2 216 Recommended Questions $\text{Pure } \text{H}_2\text{O}$, $\text{Pure } \text{C}_2\text{H}_5\text{OH}$... 4 Edit Delete
18131 $\text{The boiling point of an azeotropic mixture of water and ethanol is less than that of water and ethanol individually. The mixture shows:}$ 2 216 Recommended Questions $\text{No deviation from Raoult's law}$, $\text{Positive deviation from Raoult's law}$... 2 Edit Delete
18130 $\text{During osmosis, the flow of water through a semi-permeable membrane is:}$ 2 216 Recommended Questions $\text{From a solution having higher concentration only.}$, $\text{From both sides of the semi-permeable membrane with equal flow rates.}$... 3 Edit Delete
18129 $\text{Given that the pH of a 0.1 M monobasic acid is 2, what is the osmotic pressure at a given temperature T?}$ 2 216 Recommended Questions $0.1RT$, $0.11RT$... 2 Edit Delete
18128 $\text{The amount of CaCl}_2 \ (i = 2.47) \ \text{dissolved in 2.5 litre of water such that its}$ $\text{osmotic pressure is 0.75 atm at 27 } ^\circ \text{C is:}$ 2 216 Recommended Questions $1.02 \ \text{g}$, $4.35 \ \text{g}$... 4 Edit Delete
18127 $\text{The incorrect statement among the following is:}$ 2 216 Recommended Questions $\text{Units of atmospheric pressure and osmotic pressure are the same.}$, $\text{In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration.}$... 2 Edit Delete
18126 $\text{An unripe mango placed in a concentrated salt solution to prepare pickle shrivels because:}$ 2 216 Recommended Questions $\text{It gains water due to osmosis.}$, $\text{It loses water due to reverse osmosis.}$... 4 Edit Delete
18125 $\text{If 'A' contains 2 \% NaCl and is separated by a semi permeable membrane from 'B', which contains 10 \% NaCl, then the event that will occur is}$ 2 216 Recommended Questions $\text{NaCl will flow from 'A' to 'B'}$, $\text{NaCl will flow from 'B' to 'A'}$... 3 Edit Delete
18124 $\text{Preservation of fruits against bacterial action by adding sugar is an example of-}$ 2 216 Recommended Questions $\text{Exosmosis}$, $\text{Reverse-osmosis}$... 1 Edit Delete
18123 $\text{At a given temperature, osmotic pressure of a concentrated solution of a substance:}$ 2 216 Recommended Questions $\text{Is higher than that of a dilute solution.}$, $\text{Is lower than that of a dilute solution.}$... 1 Edit Delete
18122 $\text{An aqueous solution containing 1 g of urea boils at } 100.25 \, ^\circ\text{C.}$ $\text{The aqueous solution containing 3 g of glucose in the same volume will boil at:}$ 2 216 Recommended Questions $100.75 \, ^\circ\text{C}$, $100.5 \, ^\circ\text{C}$... 4 Edit Delete
18121 $\text{The relationship between osmotic pressure at 273 K, when 10 gm glucose } (P_1), \text{ 10 gm urea } (P_2), \text{ and 10 gm sucrose } (P_3) \text{ are dissolved in 250 ml of water, is-}$ 2 216 Recommended Questions $P_1 > P_2 > P_3$, $P_3 > P_1 > P_2$... 3 Edit Delete
18120 $\text{Aqueous solutions of } 0.004 \text{ M Na}_2\text{SO}_4 \text{ and } 0.01 \text{ M Glucose are isotonic. The degree of dissociation of Na}_2\text{SO}_4 \text{ is-}$ 2 216 Recommended Questions $25\%$, $60\%$... 3 Edit Delete
18119 $\text{The osmotic pressure of 5 \% (mass-volume) solution of cane sugar at 150 °C (mol. mass of sugar = 342 g/mole) is:}$ 2 216 Recommended Questions $4 \text{ atm}$, $5.07 \text{ atm}$... 2 Edit Delete
18118 $\text{A pair of isotonic solutions, among the following, is (assuming temperature to be the same):}$ $1.\ 0.1\ \text{(M) urea and}\ 0.1\ \text{(M) NaCl}$ $2.\ 0.1\ \text{(M) urea and}\ 0.2\ \text{(M) MgCl}_2$ $3.\ 0.1\ \text{(M) NaCl and}\ 0.1\ \text{(M) Na}_2\text{SO}_4$ $4.\ 0.1\ \text{(M) Ca(NO}_3)_2\ \text{and}\ 0.1\ \text{(M) Na}_2\text{SO}_4$ 2 216 Recommended Questions $0.1\ \text{(M) urea and}\ 0.1\ \text{(M) NaCl}$, $0.1\ \text{(M) urea and}\ 0.2\ \text{(M) MgCl}_2$... 4 Edit Delete
18117 $\text{Isotonic solutions have the same:}$ $1. \text{Vapour pressure}$ $2. \text{Freezing temperature}$ $3. \text{Osmotic pressure}$ $4. \text{Boiling temperature}$ 2 216 Recommended Questions $\text{Vapour pressure}$, $\text{Freezing temperature}$... 3 Edit Delete
18116 $\text{Match the items given in Column I and Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Saturated solution} & \text{1. Solution having same osmotic pressure at a given temperature as that of a given solution.} \\ \text{B. Hypertonic solution} & \text{2. A solution whose osmotic pressure is less than that of another.} \\ \text{C. Isotonic solution} & \text{3. A solution that contains the maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature.} \\ \text{D. Hypotonic solution} & \text{4. A solution whose osmotic pressure is more than that of another.} \\ \hline \end{array}$ $\text{Codes:}$ $\begin{array}{cccc} \text{A} & \text{B} & \text{C} & \text{D} \\ 1. & 2 & 3 & 4 & 1 \\ 2. & 2 & 4 & 3 & 1 \\ 3. & 3 & 4 & 1 & 2 \\ 4. & 1 & 2 & 3 & 4 \\ \end{array}$ 2 216 Recommended Questions $1 \ (3\%)$, $2 \ (5\%)$... 3 Edit Delete
18115 $\text{The salt that possesses the highest freezing point}$ 2 216 Recommended Questions $0.01 \text{ M NaCl}$, $0.05 \text{ M Urea}$... 1 Edit Delete
18114 $\text{A solution of 18 g of glucose in 1000 g of water is cooled to -0.2 } ^\circ \text{C. The amount of ice separating out from this solution is -}$ $[K_f(\text{H}_2\text{O}) = 1.86 \text{ K molal}^{-1}]$ 2 216 Recommended Questions $70 \text{ g}$, $140 \text{ g}$... 1 Edit Delete
18113 $\text{A 5 \% solution (by mass) of cane sugar in water has freezing point of 271 K.}$ $\text{Freezing point of 5 \% glucose in water would be: (freezing point of pure water is 273.15 K)}$ 2 216 Recommended Questions $279.24 \text{ K}$, $-269.06 \text{ K}$... 4 Edit Delete
18112 $\text{Compound PdCl}_4\cdot 6\text{H}_2\text{O is a hydrated complex, 1 molal aqueous solution of it has freezing point 269.28 K. Assuming 100 \% ionization of complex, the molecular formula of the complex is-}$ $\left(K_f \text{ for water} = 1.86 \text{ K kg mole}^{-1}\right)$ 2 216 Recommended Questions $\text{[Pd(H}_2\text{O)}\text{Cl}_4]$, $\text{[Pd(H}_2\text{O)}_4\text{Cl}_2]\cdot 2\text{H}_2\text{O}$... 3 Edit Delete
18111 $\text{Two elements A and B form compounds having formula AB}_2 \text{ and AB}_4. \text{ When dissolved in 20 g of benzene (C}_6\text{H}_6), 1 \text{ g of AB}_2 \text{ lowers the freezing point by 2.3 K whereas 1.0 g of AB}_4 \text{ lowers it by 1.3 K. The atomic masses of A and B are respectively:}$ $\left(K_f \text{ for benzene is 5.1 K kg mol}^{-1}\right)$ 2 216 Recommended Questions $15.59 \text{ u and } 52.64 \text{ u}$, $25.59 \text{ u and } 42.64 \text{ u}$... 2 Edit Delete
18110 $\text{The incorrect statement among the following is:}$ 2 216 Recommended Questions $\text{Two different solutions of sucrose of the same molality prepared in different solvents will have the same depression in freezing point.}$, $\text{The osmotic pressure of a solution is given by the equation } \pi = CRT \text{ (where C is the molarity of the solution)}$... 1 Edit Delete
18109 $\text{The depression in the freezing point of water when 10 g of CH}_3\text{CH}_2\text{CHClCOOH is added to 250 g of water will be:}$ $\left( K_a = 1.4 \times 10^{-3}, K_f = 1.86 \text{ K kg mol}^{-1} \right)$ 2 216 Recommended Questions 0.32 \text{ K}, 2.87 \text{ K}... 3 Edit Delete
18108 $\text{Which of the following 0.1 M aqueous solutions will have the lowest freezing point?}$ 2 216 Recommended Questions $\text{Potassium Sulphate.}$, $\text{Sodium chloride.}$... 1 Edit Delete
18107 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A):}$ \text{When NaCl is added to water a depression in freezing point is observed.}$ $\text{Reason (R):}$ \text{The lowering of vapour pressure of a solution causes depression in the freezing point.}$ 2 216 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18106 $\text{A solution of sucrose (molar mass = 342 g mol}^{-1}\text{) has been prepared by}$ $\text{dissolving 68.5 g of sucrose in 1000 g of water.}$ $\text{The freezing point of the solution obtained will be:}$ $\left( k_f \text{ for water = 1.86 K kg mol}^{-1} \right)$ 2 216 Recommended Questions $-0.372\ ^\circ \text{C}$, $0.372\ ^\circ \text{C}$... 1 Edit Delete
18105 $\text{The graph, amongst the following, that represents depression in the freezing point is:}$ 2 216 Recommended Questions $\begin{array}{c} \text{Vapour pressure} \\ \uparrow \\ \text{frozen solvent} \\ \text{liquid solvent} \\ \text{solution} \\ \Delta T_f \\ T_f \\ T_f^0 \\ \text{Temperature/K} \rightarrow \end{array}$, $\begin{array}{c} \text{Vapour pressure} \\ \uparrow \\ \text{frozen solvent} \\ \text{solution} \\ \text{Liquid solvent} \\ \Delta T_f \\ T_f \\ T_f^0 \\ \text{Temperature/K} \rightarrow \end{array}$... 1 Edit Delete
18104 $\text{The freezing point depression constant for water is } 1.86 \, ^\circ\text{C m}^{-1}. \text{ If } 5.00 \, \text{g Na}_2\text{SO}_4 \text{ is dissolved in } 45.0 \, \text{g H}_2\text{O}, \text{ the freezing point is changed by } -3.82 \, ^\circ\text{C}. \text{ The Van't Hoff factor for Na}_2\text{SO}_4 \text{ is:}$ 2 216 Recommended Questions $2.63$, $3.11$... 1 Edit Delete
18103 $\text{A solution containing } 6.8 \text{ g of a non-ionic solute in } 100 \text{ g of water was found to freeze at } -0.93 ^\circ \text{C.}$ $\text{The freezing point depression constant of water is } 1.86.$ $\text{The molecular weight of the solute is-}$ 2 216 Recommended Questions $13.6 \text{ m}$, $34 \text{ m}$... 4 Edit Delete
18102 $\text{In comparison to a } 0.01 \text{ M solution of glucose, the depression in the freezing point of a } 0.01 \text{ M MgCl}_2 \text{ solution will be:}$ 2 216 Recommended Questions $\text{Same}$, $\text{About twice}$... 3 Edit Delete
18101 $\text{Freezing point of an aqueous solution is } -0.166^\circ \text{C. Elevation of boiling point of the same solution would be-}$ $\left( K_b = 0.512 \text{ K m}^{-1} \text{ and } K_f = 1.66 \text{ K m}^{-1} \right)$ 2 216 Recommended Questions $0.18^\circ \text{C}$, $0.05^\circ \text{C}$... 2 Edit Delete
18100 $\text{When 20 g of naphthoic acid (C}_{11}\text{H}_{8}\text{O}_{2}) \text{ is dissolved in 50 g of benzene, a freezing point depression of 2 K is observed. What is the Van't Hoff factor (i)?}$ $\left(K_f = 1.72 \text{ K kg mol}^{-1}\right)$ 2 216 Recommended Questions $0.5$, $1$... 1 Edit Delete
18099 $\text{The freezing point of depression constant } (K_f) \text{ of benzene is } 5.12 \text{ K kg mol}^{-1}. $ $\text{The freezing point depression for the solution of molality } 0.078 \text{ m containing a non-electrolyte solute in benzene is:} $ $\text{(rounded off up to two decimal places)}$ 2 216 Recommended Questions $0.80 \text{ K}$, $0.40 \text{ K}$... 2 Edit Delete
18098 $\text{The molality of a solution containing a certain solute, if there is a freezing point depression of } 0.184 \, ^\circ\text{C, is-}$ $\left(K_f = 18.4\right)$ 2 216 Recommended Questions $0.01 \, \text{m}$, $10 \, \text{m}$... 1 Edit Delete
18097 $\text{Match the laws given in Column I with expressions given in Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Raoult's law} & 1. \pi = \text{CRT} \\ \text{B. Osmotic pressure} & 2. \Delta T_f = \text{K}_f \text{m} \\ \text{C. Elevation of boiling point} & 3. p = x_1 p_1^0 + x_2 p_2^0 \\ \text{D. Depression in freezing point} & 4. \Delta T_b = \text{K}_b \text{m} \\ \hline \end{array}$ $\text{Codes}$ $\begin{array}{|c|c|c|c|} \hline \text{A} & \text{B} & \text{C} & \text{D} \\ \hline 1 & 2 & 3 & 4 \\ 2 & 1 & 2 & 3 & 4 \\ 3 & 1 & 4 & 3 & 2 \\ 4 & 3 & 1 & 4 & 2 \\ \hline \end{array}$ 2 216 Recommended Questions $1$, $2$... 4 Edit Delete
18096 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A):}$ $\text{When methyl alcohol is added to water, boiling point of water increases.}$ $\text{Reason (R):}$ $\text{When a volatile solute is added to a volatile solvent, elevation in boiling point is observed.}$ 2 216 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
18095 $\text{The latent heat of vaporization of water is } 540 \text{ cal g}^{-1} \text{ at } 100 \degree \text{C. } K_b \text{ for water is:}$ 2 216 Recommended Questions $0.562 \text{ K m}^{-1}$, $1.86 \text{ K m}^{-1}$... 3 Edit Delete
18094 $\text{The lowest boiling point, if concentration is fixed at 0.1 M in aqueous solution, is given by which of the following solutions?}$ $\text{a. } \text{K}_2\text{SO}_4$ $\text{b. } \text{NaCl}$ $\text{c. } \text{Urea}$ $\text{d. } \text{Glucose}$ 2 216 Recommended Questions $\text{a, b}$, $\text{b, c}$... 3 Edit Delete
18093 $\text{Aluminium phosphate is 100 \% ionized in 0.01 m aqueous solution. Hence, } \frac{\Delta T_b}{K_b} \text{ is-}$ 2 216 Recommended Questions $0.01 \text{ m}$, $0.015 \text{ m}$... 4 Edit Delete
18092 $\text{The boiling point of } 0.2 \text{ mol kg}^{-1} \text{ solution of X in water is greater than the equimolal solution of Y in water. The correct statement in this case is:}$ 2 216 Recommended Questions $\text{X is undergoing dissociation in water.}$, $\text{Molecular mass of X is greater than the molecular mass of Y.}$... 1 Edit Delete
18091 $\text{At } 100 \, ^\circ\text{C the vapour pressure of a solution of } 6.5 \, \text{g of a solute in } 100 \, \text{g water is } 732 \, \text{mm. If } K_b = 0.52, \text{ the boiling point of this solution will be:}$ 2 216 Recommended Questions $100 \, ^\circ\text{C}$, $102 \, ^\circ\text{C}$... 4 Edit Delete
18090 $\text{Which graph represents the elevation in boiling point?}$ 2 216 Recommended Questions $\text{Graph 1: Boiling point of Solvent Solution}$, $\text{Graph 2: Solution Solvent}$... 1 Edit Delete
18089 $\text{The unit of Ebullioscopic constant is:}$ 2 216 Recommended Questions $\text{K kg mol}^{-1} \text{ or K (molality)}^{-1}$, $\text{mol kg K}^{-1} \text{ or K}^{-1} \text{ (molality)}$... 1 Edit Delete
18088 $\text{A solution containing } 3.3 \text{ g of a substance in } 125 \text{ g of benzene (b.p. } 80^{\circ} \text{C) boils at } 80.66^{\circ} \text{C. If } K_b \text{ for one litre of benzene is } 3.28^{\circ} \text{C m}^{-1}, \text{ the molecular weight of the substance shall be -}$ 2 216 Recommended Questions $127.20 \text{ g mol}^{-1}$, $131.20 \text{ g mol}^{-1}$... 2 Edit Delete
18087 $\text{A solution that has the highest boiling point among the following is:}$ 2 216 Recommended Questions $1.0 \text{ M NaOH}$, $1.0 \text{ M Na}_2\text{SO}_4$... 2 Edit Delete
18086 $1.00 \text{ g of non-electrolyte solute (molar mass } 250 \text{ g mol}^{-1}) \text{ was dissolved in } 51.2 \text{ g of benzene. If the freezing point depression constant, } K_f \text{ of benzene is } 5.12 \text{ mol}^{-1} \text{ kg K, the freezing point of benzene will be lowered by:}$ 2 216 Recommended Questions $0.4 \text{ K}$, $0.3 \text{ K}$... 1 Edit Delete
18085 $\text{The mole(s) of } \text{K}_2\text{SO}_4 \text{ to be dissolved in 12 moles of water to lower its vapor pressure by 10 mm of Hg at a temperature at which vapor pressure of pure water is 50 mm of Hg is:}$ 2 216 Recommended Questions $3 \text{ mol}$, $0.5 \text{ mol}$... 3 Edit Delete
18084 $\text{The mass of a non-volatile solute (molar mass 40 g mol}^{-1}\text{) that should be dissolved in 114 g octane to reduce its vapour pressure to 80 \% would be:}$ 2 216 Recommended Questions $6 \text{ g}$, $7 \text{ g}$... 4 Edit Delete
18083 $\text{A solution containing 30 g of non-volatile solute in 90 g of water has a vapour}$ $\text{pressure of 2.8 kPa at 298 K. Further, 18 g of water is then added to the}$ $\text{solution and the new vapour pressure becomes 2.9 kPa at 298 K.}$ $\text{The molar mass of the solute will be -}$ 2 216 Recommended Questions $23 \text{ g mol}^{-1}$, $34 \text{ g mol}^{-1}$... 1 Edit Delete
18082 $\text{Benzene and toluene form an ideal solution over the entire range of composition. The vapour pressure of pure benzene and toluene at 300 K are } 50.71 \text{ mm Hg and } 32.06 \text{ mm Hg respectively.}$ $\text{The mole fraction of benzene in vapour phase, if 80 g of benzene is mixed with 100 g of toluene, would be:}$ 2 216 Recommended Questions 0.41, 0.68... 4 Edit Delete
18081 $\text{If 8 g of a non-electrolyte solute is dissolved in 114 g of n-octane to reduce its vapor pressure to 80\%, the molar mass (in g mol}^{-1}\text{) of the solute is:}$ $[\text{Molar mass of n-octane is 114 g mol}^{-1}]$ 2 216 Recommended Questions $40$, $60$... 1 Edit Delete
18080 $\text{The equal weight of a solute is dissolved in an equal weight of two solvents A and B to form a very dilute solution.}$ $\text{The relative lowering of vapour pressure for solution B has twice the relative lowering of vapour pressure for solution A.}$ $\text{If } M_A \text{ and } M_B \text{ are the molecular weights of solvents A and B respectively, then:}$ 2 216 Recommended Questions $M_A = M_B$, $M_B = 2M_A$... 2 Edit Delete
18079 $\text{Total vapour pressure of a mixture of 1 mol A } (p_A^\circ = 150 \text{ torr}) \text{ and 2 mol B } (p_B^\circ = 240 \text{ torr}) \text{ is 200 torr. In this case:-}$ $1. \text{ There is a positive deviation from Raoult's law}$ $2. \text{ There is a negative deviation from Raoult's law}$ $3. \text{ There is no deviation from Raoult's law}$ $4. \text{ None of these}$ 2 216 Recommended Questions $\text{There is a positive deviation from Raoult's law}$, $\text{There is a negative deviation from Raoult's law}$... 2 Edit Delete
18078 $\text{An aqueous solution is 1.00 molal in KI. The vapour pressure of the solution can be increased by:}$ $1. \text{ Addition of NaCl}$ $2. \text{ Addition of Na}_2\text{SO}_4$ $3. \text{ Addition of 1.00 molal KI}$ $4. \text{ Addition of water}$ 2 216 Recommended Questions $\text{Addition of NaCl}$, $\text{Addition of Na}_2\text{SO}_4$... 4 Edit Delete
18077 $\text{Lowering in vapour pressure is the highest for:}$ $1.\ 0.2\ \text{m urea}$ $2.\ 0.1\ \text{m glucose}$ $3.\ 0.1\ \text{m MgSO}_4$ $4.\ 0.1\ \text{m BaCl}_2$ 2 216 Recommended Questions $0.2\ \text{m urea}$, $0.1\ \text{m glucose}$... 4 Edit Delete
18076 $\text{The Vapour pressure of CCl}_4 \text{ at } 25^\circ\text{C is } 143 \text{ mm Hg. } 0.5 \text{ g of a non-volatile solute (mol. wt. 65) is dissolved in } 100 \text{ ml of CCl}_4. \text{ The vapor pressure of the solution is-}$ $\text{(Density of CCl}_4 = 1.58 \text{ g/cm}^3)}$ 2 216 Recommended Questions $141.93 \text{ mm Hg}$, $94.39 \text{ mm Hg}$... 1 Edit Delete
18075 $\text{The vapour pressure of a pure liquid solvent A is } 0.80 \text{ atm.}$ $\text{When a non-volatile substance B is added to the solvent, its vapour pressure drops to } 0.60 \text{ atm.}$ $\text{Mole fraction of the component B in the solution is:}$ 2 216 Recommended Questions $0.50$, $0.75$... 4 Edit Delete
18074 $\text{The relative lowering of vapour caused by dissolving 71.3 g of a substance in 1000 g of water is } 7.13 \times 10^{-3}. \text{ The molecular mass of the substance is-}$ 2 216 Recommended Questions $180 \text{ g mol}^{-1}$, $18 \text{ g mol}^{-1}$... 1 Edit Delete
18073 $\text{The vapour pressure of 1 molal solution of a non-volatile solute in water at 300 K would be:}$ $\text{(The vapour pressure of water at 300 K = 12.3 kPa)}$ 2 216 Recommended Questions $21.08 \text{ kPa}$, $12.08 \text{ kPa}$... 2 Edit Delete
18072 $\text{The vapour pressure of water in the solution having 50 g of urea dissolved in 850 g of water is-}$ $\text{(Vapor pressure of pure water at 298 K is 23.8 mm Hg)}$ 2 216 Recommended Questions $23.40 \text{ mm of Hg}$, $33.46 \text{ mm of Hg}$... 1 Edit Delete
18071 $\text{The largest freezing point depression among the following 0.10 m solutions is shown by:}$ 2 216 Recommended Questions $\text{KCl}$, $\text{C}_6\text{H}_{12}\text{O}_6$... 3 Edit Delete
18070 $100 \text{ g of liquid A (molar mass } 140 \text{ g mol}^{-1}) \text{ was dissolved in } 1000 \text{ g of liquid B (molar mass } 180 \text{ g mol}^{-1}).$ $\text{The vapour pressure of pure liquid B was found to be } 500 \text{ torr.}$ $\text{If the total vapour pressure of the solution is } 475 \text{ torr, the vapour pressure of pure liquid A will be:}$ 2 216 Recommended Questions $326 \text{ torr}$, $226 \text{ torr}$... 4 Edit Delete
18069 $\text{Heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components are 105.2 kPa and 46.8 kPa respectively. The vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane would be:}$ 2 216 Recommended Questions $43.45 \text{ kPa}$, $78.96 \text{ Pa}$... 3 Edit Delete
18068 $\text{Points A and B in the below-mentioned graph represent, respectively:}$ 2 216 Recommended Questions $\text{Partial pressures of first and second components}$, $\text{Vapour pressures of the pure second and first components}$... 4 Edit Delete
18067 $\text{The mixture that shows positive deviation from Raoult's law is-}$ 2 216 Recommended Questions $\text{Benzene + Toluene}$, $\text{Acetone + Chloroform}$... 4 Edit Delete
18066 $\text{The law represented by given graph is -}$ 2 216 Recommended Questions $\text{Henry's law}$, $\text{Raoult's law}$... 2 Edit Delete
18065 $\text{A solution of acetone in ethanol:}$ $1. \text{ Shows a negative deviation from Raoult's law.}$ $2. \text{ Shows a positive deviation from Raoult's law.}$ $3. \text{ Behaves like a near ideal solution.}$ $4. \text{ Obeys Raoult's law.}$ 2 216 Recommended Questions $\text{Shows a negative deviation from Raoult's law.}$, $\text{Shows a positive deviation from Raoult's law.}$... 2 Edit Delete
18064 $\text{For an ideal solution, the correct option is:}$ $1. \Delta_{\text{mix}} G = 0 \text{ at constant T and P}$ $2. \Delta_{\text{mix}} S = 0 \text{ at constant T and P}$ $3. \Delta_{\text{mix}} V \neq 0 \text{ at constant T and P}$ $4. \Delta_{\text{mix}} H = 0 \text{ at constant T and P}$ 2 216 Recommended Questions $\Delta_{\text{mix}} G = 0 \text{ at constant T and P}$, $\Delta_{\text{mix}} S = 0 \text{ at constant T and P}$... 4 Edit Delete
18063 $\text{For a binary ideal liquid solution, the curve that represents the variation in total vapor pressure versus composition of the solution is:}$ 2 216 Recommended Questions $\text{a and b}$, $\text{b and c}$... 4 Edit Delete
18062 $\text{The incorrect statement among the following for an ideal solution is:}$ $1. \, \Delta H_{\text{Mix}} = 0$ $2. \, \Delta U_{\text{Mix}} = 0$ $3. \, \Delta P = P_{\text{obs.}} - P_{\text{(Calculated by Raoult's law)}} = 0$ $4. \, \Delta G_{\text{Mix}} = 0$ 2 216 Recommended Questions $\Delta H_{\text{Mix}} = 0$, $\Delta U_{\text{Mix}} = 0$... 4 Edit Delete
18061 $\text{Which graph represents the positive deviation of vapor pressure?}$ 2 216 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
18060 $\text{The positive deviations from Raoult's law mean the vapour pressure is:}$ 2 216 Recommended Questions $\text{Higher than expected.}$, $\text{Lower than expected.}$... 1 Edit Delete
18059 $\text{The type of molecular interactions in a solution of alcohol and water is:}$ 2 216 Recommended Questions $\text{Electrostatic interaction}$, $\text{London dispersion forces}$... 3 Edit Delete
18058 $\text{The correct statement regarding a solution of two components A and B exhibiting positive deviation from ideal behaviour is:}$ 2 216 Recommended Questions $\text{Intermolecular attractive force between A-A and B-B are stronger than those between A-B}$, $\Delta_{\text{mix}}H = 0 \text{ at constant T and P}$... 1 Edit Delete
18057 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): } \text{C}_2\text{H}_5\text{I and C}_2\text{H}_5\text{Br form an ideal solution.}$ $\text{Reason (R): } \text{The interaction between the components are similar to those in the pure components.}$ 2 216 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18056 $\text{If partial pressure of oxygen is } 0.5 \text{ atm and } K_H = 1.4 \times 10^{-3} \text{ M/atm, then the amount of oxygen dissolved in } 100 \text{ ml water at } 298 \text{K is-}$ 2 216 Recommended Questions $22.4 \text{ mg}$, $22.4 \text{ g}$... 4 Edit Delete
18055 $\text{The vapour pressure of pure benzene and toluene are 160 and 60 torr respectively. The mole fraction of toluene in vapour phase in contact with an equimolar solution of benzene and toluene is -}$ 2 216 Recommended Questions $0.50$, $0.6$... 3 Edit Delete
18054 $\text{An aqueous solution of } 2\% \text{ (w/w) non-volatile solute exerts a pressure of } 1.004 \text{ bar at the normal boiling point of the solvent. Molar mass of the solute would be:}$ 2 216 Recommended Questions $23.69 \text{ g mol}^{-1}$, $41.35 \text{ g mol}^{-1}$... 2 Edit Delete
18053 $\text{The solubility of } \text{H}_2\text{S} \text{ in water at STP is } 0.195 \text{ m. The value of Henry's constant is-}$ 2 216 Recommended Questions $274 \text{ atm}$, $285 \text{ atm}$... 2 Edit Delete
18052 $\text{The Henry's law constant for the solubility of } \text{N}_2 \text{ gas in water at } 298 \text{ K is } 1.0 \times 10^5 \text{ atm.}$ $\text{The mole fraction of } \text{N}_2 \text{ in air is } 0.8. \text{ The number of moles of } \text{N}_2 \text{ formed from air dissolved in } 10 \text{ moles of water at } 298 \text{ K and } 5 \text{ atm pressure is-}$ 2 216 Recommended Questions $4.0 \times 10^{-4} \text{ mol}$, $4.0 \times 10^{-5} \text{ mol}$... 1 Edit Delete
18051 $\text{The density of } \text{H}_2\text{SO}_4 \text{ solution is } 1.84 \text{ g ml}^{-1}. \text{ In a 1 litre solution if } \text{H}_2\text{SO}_4 \text{ is } 93 \% \text{ by (w/v) then the molality of the solution is -}$ 2 216 Recommended Questions $9.42 \text{ m}$, $10.42 \text{ m}$... 2 Edit Delete
18050 $\text{A solution is obtained by mixing } 300 \text{ g of } 25 \% \text{ solution and } 400 \text{ g of } 40 \% \text{ solution by mass. The mass percentage of solute in the resulting solution is:}$ 2 216 Recommended Questions $33.5 \%$, $36.5 \%$... 1 Edit Delete
18049 $\text{The value of Henry's constant } K_H:$ 2 216 Recommended Questions $\text{Increases with an increase in temperature.}$, $\text{Decreases with an increase in temperature.}$... 1 Edit Delete
18048 $\text{A drinking water sample was found to be contaminated with chloroform at a level of } 15 \text{ ppm (by mass). What is the mass percent of chloroform in the sample?}$ 2 216 Recommended Questions $15 \times 10^{-4}$, $1.5 \times 10^{-4}$... 1 Edit Delete
18047 $4 \text{ L of } 0.02 \text{ M aqueous solution of } \text{NaCl} \text{ was diluted by adding } 1 \text{ L of water. The molarity of the resultant solution is:}$ 2 216 Recommended Questions $0.004 \text{ M}$, $0.008 \text{ M}$... 4 Edit Delete
18046 $\text{If 22 g of benzene is dissolved in 122 g of CCl}_4, \text{ the mass percentage of CCl}_4$ $\text{and benzene respectively are-}$ 2 216 Recommended Questions $15.28\ \%, 84.72\ \%$, $84.72\ \%, 15.28\ \%$... 2 Edit Delete
18045 $\text{If the density of lake water is } 1.25 \text{ g mL}^{-1} \text{ and contains } 92 \text{ g of Na}^+ \text{ ions per kg of water, then the molality of Na}^+ \text{ ions will be:}$ 2 216 Recommended Questions $3.24 \text{ molal}$, $4 \text{ molal}$... 2 Edit Delete
18044 $\text{The density of 68\% nitric acid by mass in an aqueous solution is 1.504 g mL}^{-1}. \text{ The molarity of the acid solution would be:}$ 2 216 Recommended Questions $15.24 \text{ M}$, $16.23 \text{ M}$... 2 Edit Delete
18043 $\text{The feeling of weakness and discomfort in breathing at high altitudes is based on-}$ 2 216 Recommended Questions $\text{Boyle's law}$, $\text{Charles's law}$... 3 Edit Delete
18042 $\text{A solution of glucose (M.W = 180 g mol}^{-1}\text{) in water is 10 \% w/w. The mole fraction of each component in the solution is:}$ 2 216 Recommended Questions $\text{Mole fraction of glucose - 0.44; mole fraction of water - 0.56}$, $\text{Mole fraction of glucose - 0.056; mole fraction of water - 0.944}$... 3 Edit Delete
18041 $\text{The partial pressure of ethane over a solution containing } 6.56 \times 10^{-2} \text{ g of ethane is } 1 \text{ bar.}$ $\text{If the solution contains } 5.00 \times 10^{-2} \text{ g of ethane, the partial pressure of the gas will be:}$ 2 216 Recommended Questions $0.66 \text{ bar}$, $0.96 \text{ bar}$... 3 Edit Delete
18040 $\text{Amount of oxalic acid } ((\text{COOH})_2 \cdot 2\text{H}_2\text{O}) \text{ in grams that is required to obtain } 250 \text{ ml of a semi-molar solution is -}$ 2 216 Recommended Questions $17.75 \text{ g}$, $17.00 \text{ g}$... 3 Edit Delete
18039 $\text{A 500 g toothpaste sample has 0.4 g fluoride concentration. The fluoride concentration in terms of ppm will be -}$ 2 216 Recommended Questions $200 \text{ ppm}$, $400 \text{ ppm}$... 4 Edit Delete
18038 $\text{The amount of benzoic acid (C}_6\text{H}_5\text{COOH) required for preparing 250 mL of 0.15 M solution in methanol is:}$ 2 216 Recommended Questions $4.57 \text{ g}$, $3.57 \text{ g}$... 1 Edit Delete
18037 $\text{The unit that relates concentration of solution with its vapour pressure is:}$ $1. \text{Mole fraction.}$ $2. \text{Parts per million.}$ $3. \text{Mass percentage.}$ $4. \text{Molality.}$ 2 216 Recommended Questions $\text{Mole fraction.}$, $\text{Parts per million.}$... 1 Edit Delete
18036 $\text{Henry's law constant for the solution of methane in benzene at 298 K is } 4.27 \times 10^5 \text{ mm Hg. The mole fraction of methane in benzene at 298 K under 760 mm Hg will be:}$ 2 216 Recommended Questions $1.85 \times 10^{-5}$, $192 \times 10^{-4}$... 3 Edit Delete
18035 $\text{The graph representing Henry's law is given below:}$ $\text{The value of the slope will be}$ 2 216 Recommended Questions $4 \times 10^{-4} \text{ torr}$, $5 \times 10^{-4} \text{ torr}$... 3 Edit Delete
18034 $\text{To minimize the painful effects accompanying deep sea diving, oxygen diluted with less soluble helium gas is used as breathing gas by the divers. This is an example of the application of:}$ 2 216 Recommended Questions $\text{Raoult's law}$, $\text{Henry's law}$... 2 Edit Delete
18033 $\text{What mass of urea is needed to prepare 2.5 kg of a 0.25 m aqueous solution?}$ 2 216 Recommended Questions $73 \text{ g}$, $37 \text{ g}$... 2 Edit Delete
18032 The molarity of $\text{H}_2\text{SO}_4$ solution that has a density $1.84 \text{ g/cc}$ at $35^\circ \text{C}$ and contains $98\%$ $\text{H}_2\text{SO}_4$ by weight is- 2 216 Recommended Questions 1.84 \text{ M}, 81.4 \text{ M}... 3 Edit Delete
18031 $\text{The mass percentage of aspirin (C}_9\text{H}_8\text{O}_4\text{) in acetonitrile (CH}_3\text{CN) when 6.5 g of C}_9\text{H}_8\text{O}_4\text{ is dissolved in 450 g of CH}_3\text{CN will be:}$ 2 216 Recommended Questions $1.424\%$, $4.424\%$... 1 Edit Delete
18030 $\text{The incorrect formula among the following is:}$ $1. \text{X}_{\text{mole fraction}} = \frac{n_{\text{solute}}}{n_{\text{solution}}}$ $2. \text{Molarity} = \frac{\text{amount of solute (g)}}{\text{volume of solution (mL)}}$ $3. \text{Molality} = \frac{\text{Number of mole of solute}}{\text{amount of solvent (kg)}}$ $4. \text{Mass percentage} = \frac{\text{mass of the component in the solution}}{\text{Total mass of the solution}} \times 100$ 2 216 Recommended Questions $\text{X}_{\text{mole fraction}} = \frac{n_{\text{solute}}}{n_{\text{solution}}}$, $\text{Molarity} = \frac{\text{amount of solute (g)}}{\text{volume of solution (mL)}}$... 2 Edit Delete
18029 $\text{The temperature dependent term among the following is -}$ 2 216 Recommended Questions $\text{Molality}$, $\text{Molarity}$... 2 Edit Delete
18028 $\text{An antifreeze solution is prepared from } 222.6 \text{ g of ethylene glycol } (\text{C}_2\text{H}_6\text{O}_2) \text{ and } 200 \text{ g of water. The molality of the solution would be:}$ 2 216 Recommended Questions $6.9 \text{ m}$, $17.9 \text{ m}$... 2 Edit Delete
18027 $\text{Match the terms given in Column I with expressions given in Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I (Term)} & \text{Column II (Expression)} \\ \hline \text{A. Mass percentage} & \frac{\text{Mass of the solute component in solution}}{\text{Total Mass of solution}} \times 100 \\ \text{B. Volume percentage} & \frac{\text{Volume of the solute component in solution}}{\text{Total volume of solution}} \times 100 \\ \text{C. Molarity} & \frac{\text{Number of moles of the solute component}}{\text{Volume of solution in litres}} \\ \text{D. Molality} & \frac{\text{Number of moles of the solute component}}{\text{Mass of solvent in kilograms}} \\ \hline \end{array}$ 2 216 Recommended Questions $1 \ 2 \ 3 \ 4$, $2 \ 1 \ 3 \ 4$... 4 Edit Delete
18026 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Molarity of a solution in liquid state changes with temperature.}$ $\text{Reason (R): The volume of a solution changes with change in temperature.}$ 2 216 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
18025 $\text{Match the items given in Column I with the type of solutions given in Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Soda water} & \text{1. A solution of gas in solid} \\ \text{B. Sugar solution} & \text{2. A solution of gas in liquid} \\ \text{C. German silver} & \text{3. A solution of solid in liquid} \\ \text{D. Hydrogen gas in palladium} & \text{4. A solution of solid in solid} \\ \hline \end{array}$ $\text{Codes:}$ $\begin{array}{cccc} & \text{A} & \text{B} & \text{C} & \text{D} \\ 1. & 2 & 1 & 4 & 3 \\ 2. & 1 & 2 & 3 & 4 \\ 3. & 2 & 3 & 4 & 1 \\ 4. & 4 & 1 & 3 & 2 \\ \end{array}$ 2 216 Recommended Questions $2 \ 1 \ 4 \ 3$, $1 \ 2 \ 3 \ 4$... 3 Edit Delete
18024 $\text{A beaker contains a solution of substance 'A'. Precipitation of substance 'A' takes place when a small amount of 'A' is added to the solution. The solution is:}$ 2 216 Recommended Questions $\text{Saturated.}$, $\text{Supersaturated.}$... 2 Edit Delete
18023 $\text{The maximum amount of a solid solute that can be dissolved in a specified}$ $\text{amount of a given liquid solvent does not depend upon:}$ 2 216 Recommended Questions $\text{Temperature}$, $\text{Nature of solute}$... 3 Edit Delete
18022 $\text{The insoluble compound in water is /are:}$ 2 216 Recommended Questions $\text{Phenol}$, $\text{Formic acid and toluene}$... 4 Edit Delete
18021 $\text{Consider the following statements about the composition of the vapour over an ideal 1:1 molar mixture of benzene and toluene. The correct statement is:}$ $\text{Assume that the temperature is constant at 25 } ^\circ \text{C.}$ $\text{(Given, vapour pressure data at 25 } ^\circ \text{C, benzene = 12.8 kPa, toluene = 3.85 kPa)}$ 2 216 Recommended Questions $\text{The vapour will contain a higher percentage of toluene.}$, $\text{The vapour will contain equal amounts of benzene and toluene.}$... 4 Edit Delete
18020 $\text{An aqueous solution of hydrochloric acid -}$ $1. \text{ Obeys Raoult's law}$ $2. \text{ Shows negative deviations from Raoult's law}$ $3. \text{ Shows positive deviations from Raoult's law}$ $4. \text{ Obeys Henry's law at all compositions}$ 2 216 Recommended Questions $\text{Obeys Raoult's law}$, $\text{Shows negative deviations from Raoult's law}$... 2 Edit Delete
18019 $\text{The solubility of a gas in a liquid decreases with an increase in temperature because:}$ 2 216 Recommended Questions $\text{Dissolution of a gas in a liquid is an endothermic process.}$, $\text{Dissolution of a gas in a liquid is an exothermic process.}$... 2 Edit Delete
18018 $\text{Colligative properties are dependent on which of the following factors?}$ 2 216 Recommended Questions $\text{The nature of the solute particles dissolved in the solution.}$, $\text{The number of solute particles in the solution.}$... 2 Edit Delete
18017 $\text{The example of gas in a solid type solution is:}$ 2 216 Recommended Questions $\text{Solution of hydrogen in palladium.}$, $\text{Ethanol dissolved in water.}$... 1 Edit Delete
18016 $\text{The correct match for the below table is:}$ $\begin{array}{|c|c|} \hline \text{Type of solution} & \text{Example} \\ \hline \text{a. Solid in gas} & \text{i. Aerated water} \\ \text{b. Gas in liquid} & \text{ii. Smoke} \\ \text{c. Liquid in solid} & \text{iii. Solution of hydrogen in palladium} \\ \text{d. Gas in solid} & \text{iv. Amalgams} \\ \hline \end{array}$ $\begin{array}{cccc} \text{a} & \text{b} & \text{c} & \text{d} \\ 1. & \text{i} & \text{iii} & \text{iv} & \text{ii} \\ 2. & \text{ii} & \text{i} & \text{iv} & \text{iii} \\ 3. & \text{iii} & \text{i} & \text{iv} & \text{ii} \\ 4. & \text{iv} & \text{i} & \text{ii} & \text{iii} \end{array}$ 2 216 Recommended Questions $\text{i, iii, iv, ii}$, $\text{ii, i, iv, iii}$... 2 Edit Delete
18015 $\text{For an ideal solution, the non-zero value will be for:}$ $1. \Delta H_{\text{mix}}$ $2. \Delta S_{\text{mix}}$ $3. \Delta V_{\text{mix}}$ $4. \Delta P = P_{\text{observed}} - P_{\text{Raoult}}$ 2 216 Recommended Questions $\Delta H_{\text{mix}}$, $\Delta S_{\text{mix}}$... 2 Edit Delete
18014 $\text{A solution containing } 10 \text{ g/dm}^3 \text{ of urea (molecular mass = } 60 \text{ g mol}^{-1}) \text{ is isotonic with a } 5\% \text{ solution of a non-volatile solute. The molecular mass of this non-volatile solute is:}$ 2 216 Recommended Questions $25 \text{ g mol}^{-1}$, $300 \text{ g mol}^{-1}$... 2 Edit Delete
18013 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Ferromagnetic solids become paramagnetic upon heating.}$ $\text{Reason (R): Unpaired electrons starts pairing upon heating.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
18012 $\text{The magnetic substances that have lesser magnetic moment than expected is known as -}$ 2 215 Recommended Questions $\text{Paramagnetic.}$, $\text{Ferrimagnetic.}$... 2 Edit Delete
18011 $\text{The phenomenon in which polar crystals on heating produce electricity is called:}$ 2 215 Recommended Questions $\text{Pyro-electricity.}$, $\text{Piezo-electricity.}$... 1 Edit Delete
18010 $\text{The incorrect statement among the following is:}$ 2 215 Recommended Questions $\text{Paramagnetic substances are weakly attracted by magnetic field.}$, $\text{Ferromagnetic substances cannot be magnetised permanently.}$... 2 Edit Delete
18009 $\text{Which of the following arrangements shows the schematic alignment of magnetic moments of antiferromagnetic substances?}$ 2 215 Recommended Questions $\uparrow \uparrow \uparrow \uparrow \uparrow \uparrow$, $\downarrow \downarrow \downarrow \downarrow \downarrow \downarrow$... 4 Edit Delete
18008 $\text{A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because:}$ 2 215 Recommended Questions $\text{All the domains get oriented in the direction of the magnetic field.}$, $\text{All the domains get oriented in the direction opposite to the direction of the magnetic field.}$... 1 Edit Delete
18007 $\text{The electrical conductivity of semiconductors increases with a rise in temperature because:}$ 2 215 Recommended Questions $\text{Electrons jump from the valence band to the conduction band.}$, $\text{Electrons jump from the conduction band to the valence band.}$... 1 Edit Delete
18006 $\text{Consider the following statements about semiconductors.}$ $\text{I. Silicon doped with electron-rich impurity is a p-type semiconductor.}$ $\text{II. Silicon doped with an electron-rich impurity is an n-type semiconductor.}$ $\text{III. Delocalised electrons increase the conductivity of doped silicon.}$ $\text{IV. An electron vacancy increases the conductivity of n-type semiconductor.}$ $\text{The correct statements about semiconductors are:}$ 2 215 Recommended Questions $\text{I and II}$, $\text{II and III}$... 2 Edit Delete
18005 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A):}$ \text{Semiconductors are solids with conductivities in the range from } 10^{-6} - 10^{4} \text{ ohm}^{-1} \text{ m}^{-1}. $\text{Reason (R):}$ \text{Intermediate conductivity in semiconductors is due to a partially filled valence band.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
18004 $\text{I. Mg(s)}$ $\text{II. TiO(s)}$ $\text{III. I}_2\text{(s)}$ $\text{IV. H}_2\text{O(s)}$ $\text{The insulator among the given examples is -}$ 2 215 Recommended Questions $\text{Only I}$, $\text{Only II}$... 3 Edit Delete
18003 $\text{The incorrect statement among the following is -}$ 2 215 Recommended Questions $\text{Density decreases in case of crystals with Schottky's defect.}$, $\text{NaCl(s) is insulator, silicon is semiconductor, silver is conductor, quartz is piezo electric crystal.}$... 4 Edit Delete
18002 $\text{Chargewise p-type semiconductor is -}$ 2 215 Recommended Questions $\text{Positive.}$, $\text{Neutral.}$... 2 Edit Delete
18001 $\text{If an element (at. Wt. = 50) crystallises in fcc lattice, with } a = 0.50 \text{ nm, then the density of unit cell if it contains } 0.25 \% \text{ Schottky defect is -}$ $\text{(Use } N_A = 6 \times 10^{23}\text{)}$ 2 215 Recommended Questions $2.0 \text{ g/cc}$, $2.66 \text{ g/cc}$... 2 Edit Delete
18000 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): LiCl shows pink colour when heated in presence of lithium vapours.}$ $\text{Reason (R): LiCl shows Frenkel defect.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
17999 $(i) \ \text{Ge is doped with In}$ $(ii) \ \text{Si is doped with B.}$ $\text{The semiconductors formed in the above cases are:}$ 2 215 Recommended Questions $(i) \ \text{n-type semiconductor} \ (ii) \ \text{p-type semiconductor}$, $(i) \ \text{p-type semiconductor} \ (ii) \ \text{n-type semiconductor}$... 3 Edit Delete
17998 $\text{Correct statement among the following regarding conductivity in solids is -}$ 2 215 Recommended Questions $\kappa_{\text{metals}} \gg \kappa_{\text{insulators}} < \kappa_{\text{semiconductors}}$, $\kappa_{\text{metals}} \ll \kappa_{\text{insulators}} < \kappa_{\text{semiconductors}}$... 1 Edit Delete
17997 $\text{Doping causes-}$ $1. \text{Dislocation defect.}$ $2. \text{Schottky defect.}$ $3. \text{Frenkel defect.}$ $4. \text{Electronic defect.}$ 2 215 Recommended Questions $\text{Dislocation defect.}$, $\text{Schottky defect.}$... 4 Edit Delete
17996 $\text{Match the types of defects given in Column I with the statement given in Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Impurity defect} & \text{1. NaCl with anionic sites called F-centres} \\ \text{B. Metal excess defect} & \text{2. FeO with Fe}^{3+} \\ \text{C. Metal deficiency defect} & \text{3. NaCl with Sr}^{2+} \text{ and some cationic sites vacant} \\ \hline \end{array}$ $\text{Codes}$ $\begin{array}{|c|c|c|c|} \hline & \text{A} & \text{B} & \text{C} \\ \hline 1. & 2 & 3 & 1 \\ 2. & 3 & 1 & 2 \\ 3. & 1 & 2 & 3 \\ 4. & 2 & 1 & 3 \\ \hline \end{array}$ 2 215 Recommended Questions $2 \ 3 \ 1$, $3 \ 1 \ 2$... 2 Edit Delete
17995 $\text{Silicon gives p-type of semiconductor on doping with:}$ 2 215 Recommended Questions $\text{Germanium.}$, $\text{Arsenic.}$... 4 Edit Delete
17994 $\text{The crystal with a metal deficiency defect is -}$ 2 215 Recommended Questions $\text{NaCl}$, $\text{FeO}$... 2 Edit Delete
17993 $\text{Dislocation defect is also known as-}$ 2 215 Recommended Questions $\text{Frenkel defect.}$, $\text{Schottky defect.}$... 1 Edit Delete
17992 $\text{The correct statement regarding defects in a crystalline solid is:}$ 2 215 Recommended Questions $\text{Schottky defects have no effect on the density of crystalline solids.}$, $\text{Frenkel defects decrease the density of crystalline solids.}$... 3 Edit Delete
17991 $\text{To get a n-type semiconductor from silicon, it should be doped with a substance with valency -}$ 2 215 Recommended Questions $2$, $1$... 4 Edit Delete
17990 $\text{Match the defects given in Column I with the statements given in Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Simple vacancy defect} & \text{1. Shown by non-ionic solids and increases the density of the solid} \\ \text{B. Simple interstitial defect} & \text{2. Shown by ionic solids and decreases the density of the solid} \\ \text{C. Frenkel defect} & \text{3. Shown by non-ionic solids and decreases the density of the solid} \\ \text{D. Schottky defect} & \text{4. Shown by ionic solids and density of the solid remains the same} \\ \hline \end{array}$ 2 215 Recommended Questions $\begin{array}{cccc} 1 & 2 & 3 & 4 \\ \end{array}$, $\begin{array}{cccc} 1 & 4 & 3 & 2 \\ \end{array}$... 1 Edit Delete
17989 $\text{Higher conductivity of p-type and n-type semiconductors is due to:}$ 2 215 Recommended Questions $\text{Increase in the number of positive holes and mobile electrons respectively.}$, $\text{Increase in the number of electrons in both types of semiconductors.}$... 1 Edit Delete
17988 $\text{A defect that has an equal number of missing cations and anions is:}$ 2 215 Recommended Questions $\text{Schottky defect.}$, $\text{Frenkel defect.}$... 1 Edit Delete
17987 $\text{The appearance of colour in solid alkali metal halides is generally due to:}$ 2 215 Recommended Questions $\text{F-centres.}$, $\text{Schottky defect.}$... 1 Edit Delete
17986 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A):}$ $\text{Due to Frenkel defect, the density of the crystalline solid decreases.}$ $\text{Reason (R):}$ $\text{In Frenkel defect cation and anion leave the crystal.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 4 Edit Delete
17985 $\text{Silicon doped with electron rich impurity forms -}$ $1.\ \text{p-type semiconductor.}$ $2.\ \text{n-type semiconductor.}$ $3.\ \text{Intrinsic semiconductor.}$ $4.\ \text{Insulator.}$ 2 215 Recommended Questions $\text{p-type semiconductor.}$, $\text{n-type semiconductor.}$... 2 Edit Delete
17984 $\text{Schottky defect occurs mainly in electrovalent compounds where:}$ $1. \text{ Positive ions have large sizes.}$ $2. \text{ Negative ions have small sizes.}$ $3. \text{ Positive and negative ions are of similar size.}$ $4. \text{ Positive ions are big and negative ions are small.}$ 2 215 Recommended Questions $\text{Positive ions have large sizes.}$, $\text{Negative ions have small sizes.}$... 3 Edit Delete
17983 $\text{Match the items given in Column I with the items given in Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Mg in solid state} & \text{1. } p\text{-type semiconductor} \\ \text{B. MgCl}_2 \text{ in molten state} & \text{2. } n\text{-type semiconductor} \\ \text{C. Silicon with phosphorus} & \text{3. Electrolytic conductors} \\ \text{D. Germanium with boron} & \text{4. Electronic conductors} \\ \hline \end{array}$ $\text{Codes}$ $\begin{array}{cccc} \text{A} & \text{B} & \text{C} & \text{D} \\ 1. & 2 & 3 & 4 & 1 \\ 2. & 1 & 2 & 3 & 4 \\ 3. & 1 & 4 & 3 & 2 \\ 4. & 4 & 3 & 2 & 1 \\ \end{array}$ 2 215 Recommended Questions $1 \ (4\%)$, $2 \ (5\%)$... 4 Edit Delete
17982 $\text{NaCl is doped with } 10^{-3} \text{ mol \% of SrCl}_2. \text{ The number of cation vacancies post doping would be -}$ 2 215 Recommended Questions $4.022 \times 10^8$, $5.022 \times 10^{18}$... 3 Edit Delete
17981 $\text{Schottky defect is observed in crystals when:}$ 2 215 Recommended Questions $\text{Some cations move from their lattice site to interstitial sites.}$, $\text{Equal number of cations and anions are missing from the lattice.}$... 2 Edit Delete
17980 $\text{A compound that shows Schottky as well as Frenkel defect among the following is -}$ 2 215 Recommended Questions $\text{ZnS}$, $\text{AgBr}$... 2 Edit Delete
17979 $\text{The correct statement among the following is -}$ 2 215 Recommended Questions $\text{Semiconductors have a small energy gap between the valence band and the conduction band.}$, $\text{Conductors have overlapped valence band and conduction band.}$... 4 Edit Delete
17978 $\text{The number of octahedral void(s) per atom present in a cubic close-packed structure is:}$ 2 215 Recommended Questions $1$, $3$... 1 Edit Delete
17977 $\text{A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75 \% of octahedral voids.}$ $\text{The formula of the compound is:}$ 2 215 Recommended Questions $\text{C}_3\text{A}_4$, $\text{C}_2\text{A}_3$... 1 Edit Delete
17976 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Total number of octahedral voids present in the unit cell of cubic close packing including the one that is present at the body center, is four.}$ $\text{Reason (R): Besides the body center there is one octahedral void present at the center of each of the six faces of the unit cell and each of which is shared between two adjacent unit cells.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
17975 $\text{A compound forms a hexagonal close-packed structure. The total number of voids in } 0.5 \text{ moles}$ $\text{of the compound will be -}$ 2 215 Recommended Questions $9.033 \times 10^{23}$, $3.011 \times 10^{23}$... 1 Edit Delete
17974 $\text{In which of the following crystals are alternate tetrahedral voids occupied:}$ 2 215 Recommended Questions $\text{NaCl}$, $\text{ZnS}$... 2 Edit Delete
17973 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): In an hcp structure, each sphere is surrounded by eight other spheres.}$ $\text{Reason (R): ABC, ABC ................................ represents hcp structure.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 4 Edit Delete
17972 $\text{The incorrect statement among the following is:}$ 2 215 Recommended Questions $\text{The fraction of the total volume occupied by the atoms in a primitive cell is 0.48.}$, $\text{Molecular solids are generally volatile.}$... 1 Edit Delete
17971 $\text{In a cubic close-packed structure, the coordination number of atoms is -}$ 2 215 Recommended Questions $12$, $8$... 1 Edit Delete
17970 $\text{Match the type of packing given in Column I with the items given in Column II.}$ $\begin{array}{|c|c|} \hline \text{Column I} & \text{Column II} \\ \hline \text{A. Square close packing in two dimensions} & \text{1. Triangular voids} \\ \text{B. Hexagonal close packing in two dimensions} & \text{2. Pattern of spheres is repeated in every fourth layer} \\ \text{C. Hexagonal close packing in three dimensions} & \text{3. Coordination number = 4} \\ \text{D. Cubic close packing in three dimensions} & \text{4. Pattern of sphere is repeated in alternate layers} \\ \hline \end{array}$ 2 215 Recommended Questions $\begin{array}{cccc} 3 & 2 & 4 & 1 \end{array}$, $\begin{array}{cccc} 1 & 2 & 3 & 4 \end{array}$... 3 Edit Delete
17969 $\text{Total volume of atoms present in a face centred cubic unit cell of a metal is -}$ $\text{(r is atomic radius)}$ 2 215 Recommended Questions $\frac{20}{3} \pi r^3$, $\frac{24}{3} \pi r^3$... 4 Edit Delete
17968 $\text{In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion (Ca}^{2+}\text{) and fluoride ion (F}^-\text{) are:}$ $1.\ 4\ \text{and}\ 2$ $2.\ 6\ \text{and}\ 6$ $3.\ 8\ \text{and}\ 4$ $4.\ 4\ \text{and}\ 8$ 2 215 Recommended Questions $4\ \text{and}\ 2$, $6\ \text{and}\ 6$... 3 Edit Delete
17967 $\text{The ionic radii of A}^+ \text{ and B}^- \text{ ions are } 0.98 \times 10^{-10} \text{ m and } 1.81 \times 10^{-10} \text{ m. The coordination number of each ion in AB is:}$ 2 215 Recommended Questions $8$, $2$... 3 Edit Delete
17966 $\text{A ferric oxide crystallizes in a hexagonal close-packed array of oxide ions with two out of every three octahedral holes occupied by ferric ions. The formula of the ferric oxide is-}$ 2 215 Recommended Questions $\text{FeO}$, $\text{Fe}_2\text{O}_3$... 2 Edit Delete
17965 $\text{A cubic solid is made of two elements P and Q. Atoms of Q occupy the corners of the cube and P occupy the body centre. The formula of this compound and the coordination number of Q are respectively -}$ 2 215 Recommended Questions $\text{PQ, 8}$, $\text{P}_2\text{Q, 8}$... 1 Edit Delete
17964 $\text{A compound is formed by two elements M and N. The element N forms ccp and atoms of M occupy } \frac{1}{3} \text{rd of tetrahedral voids. The formula of the compound would be -}$ 2 215 Recommended Questions $\text{MN}$, $\text{M}_3\text{N}_4$... 3 Edit Delete
17963 $\text{An element crystallizes in a structure having FCC unit cell of an edge length 200 pm. If 200 g of this element contains } 24 \times 10^{23} \text{ atoms, the density of the element is -}$ 2 215 Recommended Questions $50.3 \text{ g/cc}$, $63.4 \text{ g/cc}$... 3 Edit Delete
17962 $\text{Same coordination number for cations and anions is present in:}$ 2 215 Recommended Questions $\text{Cl}^- \text{ ions form Fcc lattice and Na}^+ \text{ ions occupy all octahedral voids of the unit cell.}$, $\text{Ca}^{2+} \text{ ions form Fcc lattice and F}^- \text{ ions occupy all the eight tetrahedral voids of the unit cell.}$... 1 Edit Delete
17961 $\text{Copper crystallizes in a face-centered cubic lattice with a unit cell length of } 361 \text{ pm. The radius of the copper atom is:}$ $1. \ 128 \text{ pm}$ $2. \ 157 \text{ pm}$ $3. \ 181 \text{ pm}$ $4. \ 108 \text{ pm}$ 2 215 Recommended Questions $128 \text{ pm}$, $157 \text{ pm}$... 1 Edit Delete
17960 $\text{In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is -}$ 2 215 Recommended Questions $\text{AB}_2$, $\text{A}_2\text{B}_3$... 3 Edit Delete
17959 $\text{If Xenon crystallizes in face center cubic lattice and the edge of the unit cell is } 620 \text{ pm, then the radius of the Xenon atom is-}$ 2 215 Recommended Questions $219.20 \text{ pm}$, $438.5 \text{ pm}$... 1 Edit Delete
17958 $\text{The edge lengths of the unit cells in terms of the radius of spheres constituting}$ $\text{fcc, bcc, and simple cubic unit cells are respectively -}$ 2 215 Recommended Questions $2\sqrt{2}r, \frac{4r}{\sqrt{3}}, 2r$, $\frac{4r}{\sqrt{3}}, 2\sqrt{2}r, 2r$... 1 Edit Delete
17957 $\text{The total number of tetrahedral voids in the face centered unit cell is -}$ 2 215 Recommended Questions $6$, $8$... 2 Edit Delete
17956 $\text{An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centers of the faces of the cube. The empirical formula for this compound would be:}$ 2 215 Recommended Questions $\text{AB}$, $\text{A}_2\text{B}$... 3 Edit Delete
17955 $\text{In a cubic unit cell, atom A is present at each corner, atom B at each face centre and atom C at the body centre. The simplest formula of the solid is:}$ 2 215 Recommended Questions $\text{AB}_2\text{C}$, $\text{A}_2\text{BC}$... 3 Edit Delete
17954 $\text{If 'a' stands for the edge length of the cubic systems: simple cubic, body-centered cubic, and face-centered cubic, then the ratio of radii of the spheres in these systems will be respectively:}$ 2 215 Recommended Questions $\frac{1}{2}a : \frac{\sqrt{3}}{4}a : \frac{1}{2\sqrt{2}}a$, $\frac{1}{2}a : \sqrt{3}a : \frac{1}{\sqrt{2}}a$... 1 Edit Delete
17953 $\text{The density of KCl is } 1.9893 \text{ g cm}^{-3} \text{ and the length of a side unit cell is } 6.29082 \text{ \AA as determined by X-ray diffraction. The value of Avogadro's number calculated from this data is:}$ 2 215 Recommended Questions $6.017 \times 10^{23}$, $6.023 \times 10^{22}$... 1 Edit Delete
17952 $\text{Oxygen atoms form fcc unit cells with 'A' atoms occupying all tetrahedral voids and 'B' atoms occupying all octahedral voids. If atoms are removed from two of the body diagonals then the formula of the resultant compound formed is:}$ 2 215 Recommended Questions $\text{A}_4\text{B}_4\text{O}_7$, $\text{A}_8\text{B}_6\text{O}_7$... 2 Edit Delete
17951 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): The packing efficiency is maximum for the fcc structure.}$ $\text{Reason (R): The coordination number is 12 in fcc structure.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
17950 $\text{Niobium crystallizes in body-centred cubic structure. If the density is } 8.55 \text{ g cm}^{-3}, \text{ the atomic radius of niobium (atomic mass 93 u) is -}$ 2 215 Recommended Questions $13.32 \text{ nm}$, $12.32 \text{ nm}$... 3 Edit Delete
17949 $\text{Copper crystallizes into an fcc lattice with an edge length of } 3.61 \times 10^{-8} \text{ cm.}$ $\text{The density of copper crystal will be -}$ 2 215 Recommended Questions $7.46 \text{ g cm}^{-3}$, $9.67 \text{ g cm}^{-3}$... 3 Edit Delete
17948 $\text{A metallic element exists as a cubic lattice. Each edge of the unit cell is } 2.88 \, \text{Å}. \text{ The density of the metal is } 7.20 \, \text{g cm}^{-3}. \text{ The number of unit cells, that will be present in } 100 \, \text{gm of the metal is:}$ 2 215 Recommended Questions $5.82 \times 10^{23}$, $16.33 \times 10^{23}$... 1 Edit Delete
17947 $\text{Iron exhibits bcc structure at room temperature. Above } 900 \, ^\circ \text{C, it transforms to fcc structure. The ratio of density of iron at room temperature to that at } 900 \, ^\circ \text{C is:}$ $\text{(Molar mass and atomic radii of iron remain constant with temperature)}$ 2 215 Recommended Questions $\frac{\sqrt{3}}{\sqrt{2}}$, $\frac{4\sqrt{3}}{3\sqrt{2}}$... 3 Edit Delete
17946 $\text{Lithium borohydride (LiBH}_4\text{), crystallizes in an orthorhombic system with 4 molecules per unit cell. The unit cell dimensions are:}$ $a = 6.81 \, \text{\AA}, \ b = 4.43 \, \text{\AA}, \ c = 7.17 \, \text{\AA}. \text{If the molar mass of LiBH}_4 \text{ is } 21.76 \, \text{g mol}^{-1}, \text{ then the density of the crystal is:}$ 2 215 Recommended Questions $0.67 \, \text{g cm}^{-3}$, $0.58 \, \text{g cm}^{-3}$... 1 Edit Delete
17945 $\text{Lithium has a bcc structure. Its density is } 530 \text{ kg m}^{-3} \text{ and its atomic mass is } 6.94 \text{ g mol}^{-1}. \text{ The edge length of a unit cell of lithium metal is: } (N_A = 6.02 \times 10^{23} \text{ mol}^{-1})$ 2 215 Recommended Questions $352 \text{ pm}$, $527 \text{ pm}$... 1 Edit Delete
17944 $\text{The incorrect statement among the following regarding hexagonal close packing is:}$ 2 215 Recommended Questions $\text{The coordination number is 12.}$, $\text{It has 74\% packing efficiency.}$... 4 Edit Delete
17943 $\text{If NaCl is doped with } 10^{-5} \text{ mol\% of } \text{SrCl}_2, \text{ the number of cation vacancies will be -}$ 2 215 Recommended Questions $6.02 \times 10^{16}$, $6.02 \times 10^{18}$... 1 Edit Delete
17942 $\text{Sodium has body-centered packing. The distance between the two nearest atoms is } 3.7 \, \text{Å. The lattice parameter is:}$ 2 215 Recommended Questions $6.8 \, \text{Å}$, $4.3 \, \text{Å}$... 2 Edit Delete
17941 $\text{A solid has a bcc structure. If the distance of closest approach between the two atoms is } 1.73 \, \text{Å, then the edge length of the cell is:}$ 2 215 Recommended Questions $200 \, \text{pm}$, $\frac{\sqrt{3}}{\sqrt{2}} \, \text{pm}$... 1 Edit Delete
17940 $\text{In a compound, atoms of element Y form ccp lattice, and those of element X occupy } \frac{2}{3} \text{rd of tetrahedral voids. The formula of the compound will be :-}$ 2 215 Recommended Questions $\text{X}_3\text{Y}_4$, $\text{X}_4\text{Y}_3$... 2 Edit Delete
17939 $\text{An element occurring in the bcc structure has } 12.08 \times 10^{23} \text{ unit cells.}$ $\text{The total number of atoms of the element in these cells will be:}$ 2 215 Recommended Questions $24.16 \times 10^{23}$, $36.18 \times 10^{23}$... 1 Edit Delete
17938 $\text{Ice crystallizes in a hexagonal lattice having the volume of the unit cell as } 132 \times 10^{-24} \text{ cm}^3. \text{ If the density is } 0.92 \text{ g/cm}^3 \text{ at a given temperature, then the number of } \text{H}_2\text{O} \text{ molecules per unit cell is:}$ 2 215 Recommended Questions $1$, $2$... 4 Edit Delete
17937 $\text{A metal crystallizes with a fcc lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is:}$ 2 215 Recommended Questions $288 \text{ pm}$, $408 \text{ pm}$... 1 Edit Delete
17936 $\text{Iron has a body centred cubic unit cell with the cell dimension of } 286.65 \text{ pm.}$ $\text{Density of iron is } 7.87 \text{ g cm}^{-3}. \text{ The value of Avogadro's number based on this data will be -}$ $\text{(Atomic mass of Fe = 56.0 u)}$ 2 215 Recommended Questions $6.04 \times 10^{23} \text{ mol}^{-1}$, $12.08 \times 10^{24} \text{ mol}^{-1}$... 1 Edit Delete
17935 $\text{The anions (A) form hexagonal closest packing and atoms (C) occupy only } \frac{2}{3} \text{ of octahedral voids in it. The general formula of the compound is-}$ 2 215 Recommended Questions $\text{CA}$, $\text{CA}_2$... 3 Edit Delete
17934 $\text{An element (atomic mass = 100 g/mole) having a BCC structure has a unit cell edge of 400 pm. The density of the element is:}$ 2 215 Recommended Questions $2.14 \text{ g/cm}^3$, $5.20 \text{ g/cm}^3$... 2 Edit Delete
17933 $\text{If the lattice parameter for a crystalline structure is } 3.6 \, \text{Å, then the atomic radius in fcc crystal is:}$ 2 215 Recommended Questions $1.81 \, \text{Å}$, $2.10 \, \text{Å}$... 4 Edit Delete
17932 $\text{A metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g cm}^{-3}\text{. The molar mass of the metal is:}$ $\left( N_A \text{ Avogadro's constant} = 6.02 \times 10^{23} \text{ mol}^{-1} \right)$ 2 215 Recommended Questions $30 \text{ g mol}^{-1}$, $27 \text{ g mol}^{-1}$... 2 Edit Delete
17931 $\text{The formula of nickel oxide with metal deficiency defect in its crystal is } \text{Ni}_{0.98}\text{O}. \text{ The crystal contains } \text{Ni}^{2+} \text{ and } \text{Ni}^{3+} \text{ ions. The fraction of nickel existing as } \text{Ni}^{2+} \text{ ions in the crystal is-}$ 2 215 Recommended Questions $0.96$, $0.04$... 1 Edit Delete
17930 $\text{An element with a molar mass of } 2.7 \times 10^{-2} \text{ kg mol}^{-1} \text{ and density } 2.7 \times 10^{3} \text{ kg m}^{-3} \text{ forms a unit cell with an edge length of } 405 \text{ pm. The type of unit cell is-}$ 2 215 Recommended Questions $\text{Simple cubic cell.}$, $\text{Face-centered cubic cell.}$... 2 Edit Delete
17929 $\text{A given metal crystallizes out with a cubic structure having an edge length of } 361 \text{ pm. If there are four metal atoms in one unit cell, the radius of one atom is:}$ 2 215 Recommended Questions $40 \text{ pm}$, $127 \text{ pm}$... 2 Edit Delete
17928 $\text{An element has a body-centered cubic (BCC) structure with a cell edge of } 288 \text{ pm. The atomic radius is:}$ 2 215 Recommended Questions $\frac{\sqrt{2}}{4} \times 288 \text{ pm}$, $\frac{4}{\sqrt{3}} \times 288 \text{ pm}$... 4 Edit Delete
17927 $\text{The fraction of total volume occupied by the atoms present in a simple cube is:}$ 2 215 Recommended Questions $\frac{\pi}{6}$, $\frac{\pi}{3\sqrt{2}}$... 1 Edit Delete
17926 $\text{Silver crystallizes in fcc lattice. If the edge length of the cell is } 4.07 \times 10^{-8} \text{ cm}$ $\text{and density is } 10.5 \text{ g cm}^{-3}, \text{ the atomic mass of silver is -}$ 2 215 Recommended Questions $120.31 \text{ g mol}^{-1}$, $107.9 \text{ g mol}^{-1}$... 2 Edit Delete
17925 $\text{The most efficient packing is present in -}$ 2 215 Recommended Questions $\text{HCP and BCC}$, $\text{HCP and CCP}$... 2 Edit Delete
17924 $\text{The relation between the atomic mass of unknown metal with density and the dimension of its unit cell is given by:}$ $\text{(Given: All the cell edge lengths are equal)}$ 2 215 Recommended Questions $m = \frac{\rho a^3 N_A}{Z}$, $m = \rho a^3 N_A Z$... 1 Edit Delete
17923 $\text{The packing efficiency of the face-centered cubic unit cell is:}$ $\text{(assuming that the atoms are touching each other)}$ 2 215 Recommended Questions $52.40 \%$, $68.04 \%$... 3 Edit Delete
17922 $\text{The correct order of the packing efficiency in different types of unit cells is-}$ 2 215 Recommended Questions $\text{Fcc} < \text{Bcc} < \text{Simple cubic}$, $\text{Fcc} > \text{Bcc} > \text{Simple cubic}$... 2 Edit Delete
17921 $\text{The percentage of free space in a body-centered cubic unit cell is:}$ 2 215 Recommended Questions $30\%$, $32\%$... 2 Edit Delete
17920 $\text{CsBr crystallises in a body-centered cubic lattice. The unit cell length is } 436.6 \text{ pm.}$ $\text{Given that the atomic mass of Cs = 133 amu and that of Br = 80 amu}$ $\text{and the Avogadro number being } 6.02 \times 10^{23} \text{ mol}^{-1}, \text{ the density of CsBr is:}$ 2 215 Recommended Questions $42.5 \text{ g/cm}^3$, $0.425 \text{ g/cm}^3$... 4 Edit Delete
17919 $\text{The number of lattice points in one unit cell of face-centred tetragonal lattice is -}$ 2 215 Recommended Questions $4$, $12$... 3 Edit Delete
17918 $\text{Aluminum crystallizes in a cubic close-packed structure. It's metallic radius is } 125 \text{ pm. The number of unit cells in } 1.00 \text{ cm}^3 \text{ of aluminum are:}$ 2 215 Recommended Questions $2.27 \times 10^{22}$, $3.54 \times 10^{22}$... 1 Edit Delete
17917 $\text{TiO}_2$ $\text{is a well-known example of:}$ 2 215 Recommended Questions $\text{Triclinic system.}$, $\text{Tetragonal system.}$... 2 Edit Delete
17916 $\text{Iodine crystals are classified as-}$ $1. \text{Metallic solids.}$ $2. \text{Ionic solids.}$ $3. \text{Molecular solids.}$ $4. \text{Covalent solids.}$ 2 215 Recommended Questions $\text{Metallic solids.}$, $\text{Ionic solids.}$... 3 Edit Delete
17915 $\text{The mass of a unit cell of CsCl corresponds to:}$ 2 215 Recommended Questions $8\text{Cs}^+ \text{ and Cl}^-$, $1\text{Cs}^+ \text{ and 6Cl}^-$... 3 Edit Delete
17914 $\text{If } a \text{ is the length of the side of a cube, the distance between the body-centered atom and one corner atom in the cube will be:}$ 2 215 Recommended Questions $\frac{2}{\sqrt{3}} a$, $\frac{4}{\sqrt{3}} a$... 4 Edit Delete
17913 $\text{AB crystallizes in a body-centred cubic lattice with edge length a equal to 387 pm.}$ $\text{The distance between two oppositely charged ions in the lattice will be:}$ 2 215 Recommended Questions $250 \text{ pm}$, $200 \text{ pm}$... 4 Edit Delete
17912 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Graphite is a good conductor of electricity. However, diamond belongs to the category of insulators.}$ $\text{Reason (R): Graphite is soft in nature whereas diamond is very hard and brittle.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
17911 13 2 215 Recommended Questions 1, 2... 1 Edit Delete
17910 $\text{The pair having only molecular solids among the following is -}$ 2 215 Recommended Questions $\text{Brass and SiC}$, $\text{Ammonium phosphate (NH}_4\text{)}_3\text{PO}_4$... 4 Edit Delete
17909 $\text{The similarity between metallic and ionic crystals is -}$ 2 215 Recommended Questions $\text{Both these crystal types are held by the electrostatic force of attraction.}$, $\text{Both these crystal types are held by the Van der Waal's forces of attraction.}$... 1 Edit Delete
17908 $\text{An example of amorphous solid among the following is -}$ 2 215 Recommended Questions $\text{Graphite (C)}$, $\text{Quartz glass (SiO}_2\text{)}$... 2 Edit Delete
17907 $\text{Incorrect statement among the following about amorphous solids is -}$ 2 215 Recommended Questions $\text{On heating they may become crystalline at a certain temperature.}$, $\text{They may become crystalline on keeping for a long time.}$... 4 Edit Delete
17906 $\text{The correct statement(s) among the above is -}$ $\text{a. The coordination number of a cation occupying a tetrahedral hole is 4.}$ $\text{b. The coordination number of a cation occupying an octahedral hole is 6.}$ $\text{c. In Schottky defect, the density of the lattice decreases.}$ 2 215 Recommended Questions $\text{a, b}$, $\text{b, c}$... 3 Edit Delete
17905 $\text{The coordination number of a square close-packed structure in two dimensions is -}$ 2 215 Recommended Questions $2$, $3$... 3 Edit Delete
17904 $\text{Network solid, among the following, is:}$ 2 215 Recommended Questions $\text{SO}_2(\text{solid})$, $\text{I}_2$... 3 Edit Delete
17903 $\text{The incorrect statement among the following regarding crystalline solid is -}$ 2 215 Recommended Questions $\text{Definite and characteristic heat of fusion.}$, $\text{Isotropic nature.}$... 2 Edit Delete
17902 $\text{Lithium metal crystallizes in a body-centered cubic crystal. If the length of the side of the unit cell of lithium is } 351 \text{ pm, the atomic radius of the lithium will be:}$ 2 215 Recommended Questions $240.8 \text{ pm}$, $151.8 \text{ pm}$... 2 Edit Delete
17901 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A):}$ \text{The stability of a crystal is reflected by the magnitude of its melting point.}$ $\text{Reason (R):}$ \text{Greater the intermolecular forces of attraction, the higher will be the stability and melting point of the substance.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
17900 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): The total number of atoms present in a simple cubic unit cell is one.}$ $\text{Reason (R): Simple cubic unit cell has atoms at its corners, each of which is shared between eight adjacent unit cells.}$ 2 215 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
17899 $\text{The unit cell dimensions of a cubic lattice (edges } a, b, c \text{ and the angles between them, } \alpha, \beta, \gamma \text{) are:}$ 2 215 Recommended Questions $a = b = c, \alpha = \beta = \gamma = 90^\circ$, $a = b \neq c, \alpha = \beta = \gamma = 90^\circ$... 1 Edit Delete
17898 $\text{The chemical that is an excellent ‘green’ solvent as well as a greenhouse gas is:}$ 2 214 Recommended Questions $\text{Methanol}$, $\text{CFCs}$... 4 Edit Delete
17897 $\text{The best alternative of tetrachloroethane for dry cleaning is-}$ 2 214 Recommended Questions $\text{Liquified CO}_2 \text{ along with suitable detergent.}$, $\text{Liquified CO}_2 \text{ along with suitable oil.}$... 1 Edit Delete
17896 $\text{The practice that does not come under green chemistry among the following is-}$ 2 214 Recommended Questions $\text{Making use of soap made of vegetable oils instead of using synthetic detergents.}$, $\text{Using } \text{H}_2\text{O}_2 \text{ for bleaching purposes instead of using chlorine-based bleaching agents.}$... 4 Edit Delete
17895 $\text{Green chemistry means such reactions that:}$ 2 214 Recommended Questions $\text{Produce colour during reactions}$, $\text{Reduce the use and production of hazardous chemicals.}$... 2 Edit Delete
17894 $\text{The correct statement(s) regarding green chemistry is/are:}$ 2 214 Recommended Questions $\text{It helps in decreasing environmental pollution.}$, $\text{It prevents or limits chemical pollutants from being introduced into the environment.}$... 4 Edit Delete
17893 $\text{Domestic waste will lead to:}$ 2 214 Recommended Questions $\text{Biodegradable pollution}$, $\text{Nondegradable pollution}$... 1 Edit Delete
17892 $\text{The major source(s) of soil pollution is/are:}$ 2 214 Recommended Questions $\text{Industrial waste.}$, $\text{Fertilizers and pesticides.}$... 4 Edit Delete
17891 $\text{The correct statement about domestic waste is:}$ 2 214 Recommended Questions $\text{Only biodegradable domestic waste can be used as manure.}$, $\text{Non-biodegradable waste should be sent to industries for recycling.}$... 4 Edit Delete
17890 $\text{The example(s) of pesticide is/are-}$ 2 214 Recommended Questions $\text{Aldrin}$, $\text{Sodium chlorate}$... 4 Edit Delete
17889 $\text{What is the process involved for a good produce in the treatment of bad odour, flies, and recycling of waste?}$ 2 214 Recommended Questions $\text{It should be kept covered.}$, $\text{The recyclable waste should not be dumped in the compost-producing pit.}$... 4 Edit Delete
17888 $\text{Soil erosion can be prevented by:}$ 2 214 Recommended Questions $\text{Overgrazing}$, $\text{Removal of vegetation}$... 3 Edit Delete
17887 $\text{The major contributor to water pollution among the following is-}$ 2 214 Recommended Questions $\text{Sound}$, $\text{SO}_2$... 4 Edit Delete
17886 $\text{Match the pollutant (s) in Column I with effect (s) in Column II.}$ $\text{Column I}$ $\text{A. Oxides of Sulphur}$ $\text{B. Nitrogen dioxide}$ $\text{C. Lead}$ $\text{D. Nitrate in drinking water}$ $\text{Column II}$ $\text{1. Red haze in traffic and congested areas}$ $\text{2. Damage to kidney}$ $\text{3. 'Blue baby' syndrome}$ $\text{4. Respiratory diseases}$ 2 214 Recommended Questions $\text{A. 2, B. 3, C. 4, D. 1}$, $\text{A. 1, B. 2, C. 3, D. 4}$... 4 Edit Delete
17885 $\text{If water pollution continues at its present rate, it will eventually:}$ $1. \text{ Stop the water cycle.}$ $2. \text{ Prevent precipitation.}$ $3. \text{ Make oxygen molecules unavailable to water plants.}$ $4. \text{ Make nitrate molecules unavailable to water plants.}$ 2 214 Recommended Questions $\text{Stop the water cycle.}$, $\text{Prevent precipitation.}$... 3 Edit Delete
17884 $\text{Mercury, aluminum, lead, copper, DDT, etc. are an example of:}$ 2 214 Recommended Questions $\text{Biodegradable Pollutant.}$, $\text{Non-biodegradable pollutant.}$... 2 Edit Delete
17883 $\text{If a lake is contaminated with DDT, its highest concentration would be found in:}$ $1.\ \text{Primary consumer}$ $2.\ \text{Secondary consumer}$ $3.\ \text{Tertiary consumer}$ $4.\ \text{None of the above.}$ 2 214 Recommended Questions $\text{Primary consumer}$, $\text{Secondary consumer}$... 3 Edit Delete
17882 $\text{A farmer was told that fishes were not fit for human consumption because a large amount of pesticides had accumulated in the tissues of fishes. This happens:}$ $\text{1. By the transfer of pesticides in the food chain.}$ $\text{2. By the degradation of pesticides.}$ $\text{3. By the reaction of pesticides with atmospheric oxygen.}$ $\text{4. By the reaction of pesticides with atmospheric carbon dioxide.}$ 2 214 Recommended Questions $\text{By the transfer of pesticides in the food chain.}$, $\text{By the degradation of pesticides.}$... 1 Edit Delete
17881 $\text{When a lake get covered with algae, a stinking smell comes out and its water becomes unpotable. The reason for such a condition of the lake is-}$ 2 214 Recommended Questions $\text{Eutrophication.}$, $\text{Excess of oxalate ions in water.}$... 1 Edit Delete
17880 $\text{The main factor of water pollution is:}$ 2 214 Recommended Questions $\text{Smoke}$, $\text{Industrial waste}$... 2 Edit Delete
17879 $\text{Pollution can be controlled by-}$ $1. \text{Sewage treatment.}$ $2. \text{Checking atomic blasts.}$ $3. \text{Manufacturing electrically operated vehicles.}$ $4. \text{All of the above.}$ 2 214 Recommended Questions $\text{Sewage treatment.}$, $\text{Checking atomic blasts.}$... 4 Edit Delete
17878 $\text{Phytoplanktons kill the fish because:}$ 2 214 Recommended Questions $\text{Phytoplanktons decrease the BOD level that causes the death of fish.}$, $\text{Phytoplanktons increase the BOD level that causes the death of fish.}$... 2 Edit Delete
17877 $\text{Biochemical oxygen Demand value less than 5 ppm indicates a water sample to be:}$ 2 214 Recommended Questions $\text{Highly polluted.}$, $\text{Poor in dissolved oxygen.}$... 3 Edit Delete
17876 $\text{Incorrect statement among the following is:}$ $1.\ \text{Oxides of sulphur, nitrogen, and carbon are the most widespread air pollutant.}$ $2.\ \text{pH of drinking water should be between 6.5 and 8.5.}$ $3.\ \text{Concentration of dissolved oxygen below 6 ppm is good for the growth of fish.}$ $4.\ \text{Clean water would have a BOD value of less than 5 ppm.}$ 2 214 Recommended Questions $\text{Oxides of sulphur, nitrogen, and carbon are the most widespread air pollutant.}$, $\text{pH of drinking water should be between 6.5 and 8.5.}$... 3 Edit Delete
17875 $\text{B.O.D is connected with-}$ $1. \text{Organic matter}$ $2. \text{Microbes}$ $3. \text{Both (1) and (2)}$ $4. \text{None of the above.}$ 2 214 Recommended Questions $\text{Organic matter}$, $\text{Microbes}$... 3 Edit Delete
17874 $\text{Biochemical Oxygen Demand (BOD) is-}$ 2 214 Recommended Questions $\text{Amount of oxygen required by bacteria to decompose organic matter in a certain volume of a sample of water.}$, $\text{Amount of CO}_2 \text{ required by bacteria to decompose organic matter in a certain volume of a sample of water.}$... 1 Edit Delete
17873 $\text{The major pollutant(s) of water pollution is/are:}$ 2 214 Recommended Questions $\text{Pathogens.}$, $\text{Organic waste.}$... 4 Edit Delete
17872 $\text{The best measure(s) to control water pollution is/are:}$ 2 214 Recommended Questions $\text{Compost should be preferred over chemical fertilizers.}$, $\text{The concentration of pollutants in the industrial plants should be checked regularly.}$... 4 Edit Delete
17871 $\text{A gas that has the greatest affinity for hemoglobin is:}$ 2 214 Recommended Questions $\text{CH}_4$, $\text{NO}$... 4 Edit Delete
17870 $\text{Gas that is not a pollutant is:}$ 2 214 Recommended Questions $\text{Carbon monoxide}$, $\text{Nitrogen peroxide}$... 3 Edit Delete
17869 $\text{`White lung cancer' is caused by:}$ 2 214 Recommended Questions $\text{Asbestos}$, $\text{Silica}$... 1 Edit Delete
17868 $\text{Air pollution from the leakage of methyl isocyanate gas from the union carbide}$ $\text{factory in Bhopal caused a major tragedy on:}$ 2 214 Recommended Questions $\text{Dec. 2, 1984}$, $\text{Dec 15, 1983}$... 1 Edit Delete
17867 $\text{The aromatic compound that is present as particulate among the following is:}$ 2 214 Recommended Questions $\text{Benzene}$, $\text{Toluene}$... 4 Edit Delete
17866 $\text{Photochemical smog formed in congested metropolitan cities mainly consists of:}$ 2 214 Recommended Questions $\text{Ozone, SO}_2, \text{ and hydrocarbons.}$, $\text{Ozone, PAN, and NO}_2$... 2 Edit Delete
17865 $\text{The most abundant hydrocarbon pollutant is:}$ $1. \text{Methane}$ $2. \text{Ethane}$ $3. \text{Propane}$ $4. \text{Butane}$ 2 214 Recommended Questions $\text{Methane}$, $\text{Ethane}$... 1 Edit Delete
17864 $\text{The main air pollutant among the following is:}$ 2 214 Recommended Questions $\text{CO}$, $\text{CO}_2$... 1 Edit Delete
17863 $\text{Among the following, the one that is not a greenhouse gas is:}$ $1.\ \text{Sulphur dioxide}$ $2.\ \text{Nitrous oxide}$ $3.\ \text{Methane}$ $4.\ \text{Ozone}$ 2 214 Recommended Questions $\text{Sulphur dioxide}$, $\text{Nitrous oxide}$... 1 Edit Delete
17862 $\text{Among the following gases, the one that is not a greenhouse gas is:}$ 2 214 Recommended Questions $\text{CO}$, $\text{O}_3$... 1 Edit Delete
17861 $\text{Tropospheric pollution arises due to the presence of:}$ 2 214 Recommended Questions $\text{SO}_2, \text{SO}_3, \text{and NO}_2, \text{in the lowest layer of the atmosphere.}$, $\text{SO}_2, \text{SO}_3, \text{and NO}_2, \text{in the uppermost layer of the atmosphere.}$... 1 Edit Delete
17860 $\text{In the absence of greenhouse gases -}$ 2 214 Recommended Questions $\text{Life on earth would be impossible.}$, $\text{Average temperature of the earth will decrease drastically.}$... 4 Edit Delete
17859 $\text{A non-greenhouse gas is:}$ 2 214 Recommended Questions $\text{CO}_2$, $\text{CH}_4$... 4 Edit Delete
17858 $\text{... is not a greenhouse gas :-}$ $1.\ \text{Hydrogen}$ $2.\ \text{Carbon dioxide}$ $3.\ \text{Methane}$ $4.\ \text{Nitrous oxide or } \text{N}_2\text{O}$ 2 214 Recommended Questions $\text{Hydrogen}$, $\text{Carbon dioxide}$... 1 Edit Delete
17857 $\text{Gases responsible for greenhouse effect are:}$ $1.\ \text{Carbon dioxide (CO}_2\text{)}$ $2.\ \text{Ozone (O}_3\text{)}$ $3.\ \text{Nitrous oxide (N}_2\text{O)}$ $4.\ \text{All of the above.}$ 2 214 Recommended Questions $\text{Carbon dioxide (CO}_2\text{)}$, $\text{Ozone (O}_3\text{)}$... 4 Edit Delete
17856 $\text{CO gas is more dangerous than CO}_2 \text{ gas because:}$ $1. \text{CO is capable of forming a complex with haemoglobin (carboxyhemoglobin), that is more stable than the oxygen-haemoglobin complex.}$ $2. \text{CO is capable of forming a complex with haemoglobin (carboxyhemoglobin), that is less stable than the oxygen-haemoglobin complex.}$ $3. \text{CO}_2 \text{ is capable of forming a complex with haemoglobin (carboxyhemoglobin), that is more stable than the oxygen-haemoglobin complex.}$ $4. \text{CO}_2 \text{ is capable of forming a complex with haemoglobin (carboxyhemoglobin), that is less stable than the oxygen-haemoglobin complex.}$ 2 214 Recommended Questions $\text{CO is capable of forming a complex with haemoglobin (carboxyhemoglobin), that is more stable than the oxygen-haemoglobin complex.}$, $\text{CO is capable of forming a complex with haemoglobin (carboxyhemoglobin), that is less stable than the oxygen-haemoglobin complex.}$... 1 Edit Delete
17855 $\text{The phenomenon in which atmospheric gases trap the heat radiations from the sun near the earth's surface and keeps it warm is known as-}$ 2 214 Recommended Questions $\text{Natural greenhouse effect}$, $\text{Tyndall effect}$... 1 Edit Delete
17854 $\text{The ozone layer of the upper atmosphere is being destroyed by:}$ 2 214 Recommended Questions $\text{Sulphur dioxide}$, $\text{Carbon dioxide}$... 3 Edit Delete
17853 $\text{The most harmful air pollutant produced by automobiles is-}$ 2 214 Recommended Questions $\text{HNO}_2$, $\text{NO}$... 4 Edit Delete
17852 $\text{The oxygen present today in the atmosphere-}$ 2 214 Recommended Questions $\text{Is a plant product.}$, $\text{Came from ozone.}$... 1 Edit Delete
17851 $\text{The most hazardous metal pollutant of automobile exhaust is:}$ 2 214 Recommended Questions $\text{Hg}$, $\text{Cd}$... 3 Edit Delete
17850 $\text{Green plants use carbon dioxide for photosynthesis and return oxygen to the atmosphere. Even then carbon dioxide is considered to be responsible for greenhouse effect:}$ $1. \text{ Due to an increase in atmospheric temperature.}$ $2. \text{ Due to ozone depletion.}$ $3. \text{ Due to decrease in atmospheric temperature.}$ $4. \text{ Due to an increase in chlorophyll concentration.}$ 2 214 Recommended Questions $\text{Due to an increase in atmospheric temperature.}$, $\text{Due to ozone depletion.}$... 1 Edit Delete
17849 $\text{Which, of the following, gases contributes nearly 50 \% to the green house}$ $\text{effect (which, in turn, causes global warming) ?}$ 2 214 Recommended Questions $\text{SO}_2$, $\text{SO}_3$... 3 Edit Delete
17848 $\text{An increase in } \text{CO}_2 \text{ concentration in the atmosphere will result in:}$ 2 214 Recommended Questions $\text{Adverse effects on natural vegetation.}$, $\text{Global warming.}$... 2 Edit Delete
17847 $\text{Statues and monuments in India are affected by acid rain because of the formation of:}$ 2 214 Recommended Questions $\text{CaSO}_4 \text{ on the reaction of acid rain with limestone.}$, $\text{CaCO}_3 \text{ on the reaction of acid rain with limestone.}$... 1 Edit Delete
17846 $\text{Major component of acid rain is:}$ 2 214 Recommended Questions $\text{HNO}_3$, $\text{H}_2\text{SO}_4$... 2 Edit Delete
17845 $\text{When rain is accompanied by a thunderstorm, the pH value of the collected rain water is:}$ $1. \text{ Dependent upon the amount of dust in the air.}$ $2. \text{ Slightly lower when rainwater is without a thunderstorm.}$ $3. \text{ Slightly higher when the thunderstorm is not there.}$ $4. \text{ Unaffected by the occurrence of thunderstorms.}$ 2 214 Recommended Questions $\text{Dependent upon the amount of dust in the air.}$, $\text{Slightly lower when rainwater is without a thunderstorm.}$... 2 Edit Delete
17844 $\text{Pollution that occurs in the lowest layer of the atmosphere is:}$ 2 214 Recommended Questions $\text{Stratosphere pollution.}$, $\text{Ozone layer pollution.}$... 4 Edit Delete
17843 $\text{Match the terms given in Column I with the compounds given in Column II.}$ $\text{Column I}$ \quad \text{Column II}$ $\text{A. Acid rain} \quad 1. \text{CHCl}_2 - \text{CHF}_2$ $\text{B. Photochemical smog} \quad 2. \text{CO}$ $\text{C. Combination with hemoglobin} \quad 3. \text{Unsaturated hydrocarbons}$ $\text{D. Depletion of the ozone layer} \quad 4. \text{SO}_2$ $\text{Codes}$ 2 214 Recommended Questions $1. \ 4 \ 2 \ 3 \ 1$, $2. \ 1 \ 2 \ 3 \ 4$... 3 Edit Delete
17842 $\text{An incorrect statement regarding acid rain is that:}$ $1. \text{ It is formed due to the reaction of } \text{SO}_2 \text{ and } \text{NO}_2 \text{ with rainwater.}$ $2. \text{ It causes no damage to monuments like the Taj Mahal.}$ $3. \text{ It is harmful to plants.}$ $4. \text{ Its pH is less than 5.6}$ 2 214 Recommended Questions $\text{It is formed due to the reaction of } \text{SO}_2 \text{ and } \text{NO}_2 \text{ with rainwater.}$, $\text{It causes no damage to monuments like the Taj Mahal.}$... 2 Edit Delete
17841 $\text{Acid rain occurs due to the presence of:}$ $1.\ \text{SO}_2\ \text{in the atmosphere}$ $2.\ \text{NH}_3\ \text{in the atmosphere}$ $3.\ \text{CO}_2\ \text{in the atmosphere}$ $4.\ \text{N}_2\text{O}\ \text{in the atmosphere}$ 2 214 Recommended Questions $\text{SO}_2\ \text{in the atmosphere}$, $\text{NH}_3\ \text{in the atmosphere}$... 1 Edit Delete
17840 $\text{Acid rain is due to an increase in the atmospheric concentration of:}$ 2 214 Recommended Questions $\text{Ozone, and dust}$, $\text{CO}_2, \text{ and CO}$... 4 Edit Delete
17839 $\text{Acid rain occurs due to the oxidation of:}$ $1.\ \text{Carbon, sulphur (unsaturated hydrocarbon) and nitrogen.}$ $2.\ \text{Ethanol.}$ $3.\ \text{Methanol.}$ $4.\ \text{Methane.}$ 2 214 Recommended Questions $\text{Carbon, sulphur (unsaturated hydrocarbon) and nitrogen.}$, $\text{Ethanol.}$... 1 Edit Delete
17838 $\text{Ozone depletion occurs in:}$ 2 214 Recommended Questions $\text{Tropospheric pollution.}$, $\text{Stratospheric pollution.}$... 2 Edit Delete
17837 $\text{The reaction(s) involved in ozone layer depletion in the stratosphere is/are:}$ 2 214 Recommended Questions $\text{CF}_2\text{Cl}_2 (g) \xrightarrow{\text{UV}} \cdot \text{Cl} (g) + \cdot \text{CF}_2\text{Cl} (g)$, $\cdot \text{Cl} (g) + \text{O}_3 (g) \rightarrow \text{ClO} (g) + \text{O}_2 (g)$... 4 Edit Delete
17836 $\text{Ozone is a very toxic gas and a strong oxidizing agent. It is still useful for life on earth:}$ 2 214 Recommended Questions $\text{because it traps harmful UV-rays.}$, $\text{because it balances global warming.}$... 1 Edit Delete
17835 $\text{The gas that damages the ozone layer is -}$ 2 214 Recommended Questions $\text{CFCs}$, $\text{CO}_2$... 1 Edit Delete
17834 $\text{Consequence(s) of ozone hole is/are:}$ 2 214 Recommended Questions $\text{They cause death of many phytoplanktons.}$, $\text{Excess exposure may even cause mutation in plants.}$... 4 Edit Delete
17833 $\text{A gas that is not a common component of photochemical smog is-}$ 2 214 Recommended Questions $\text{Ozone}$, $\text{Acrolein}$... 4 Edit Delete
17832 $\text{A factory was started near a village. Suddenly villagers started feeling the presence of irritating vapors in the village and cases of headache, chest pain, cough, dryness of throat, and breathing problems increased. Villagers blamed the emissions from the chimney of the factory for such problems. This is:}$ 2 214 Recommended Questions $\text{Due to the burning of fossil fuels such as gasoline, coal, natural gas, etc.}$, $\text{Due to the burning of toxic soil.}$... 1 Edit Delete
17831 $\text{The incorrect statement about carbon monoxide is-}$ $1.\ \text{It reduces the oxygen-carrying ability of blood.}$ $2.\ \text{The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.}$ $3.\ \text{It is produced due to incomplete combustion.}$ $4.\ \text{It forms carboxyhaemoglobin.}$ 2 214 Recommended Questions $\text{It reduces the oxygen-carrying ability of blood.}$, $\text{The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.}$... 2 Edit Delete
17830 $\text{The reaction/s involved during the formation of photochemical smog are:}$ $1. \text{NO}_2(g) \rightarrow \text{NO}(g) + \text{O}(g)$ $2. \text{O}(g) + \text{O}_2(g) \rightarrow \text{O}_3(g)$ $3. \text{O}_3(g) + \text{NO}(g) \rightarrow \text{NO}_2(g) + \text{O}_2(g)$ $4. \text{All of the above}$ 2 214 Recommended Questions $1 \ (5\%)$, $2 \ (3\%)$... 4 Edit Delete
17829 $\text{The correct statement(s) regarding photochemical smog is/are:}$ 2 214 Recommended Questions $\text{It occurs in a dry, sunny climate.}$, $\text{It is oxidizing in nature.}$... 4 Edit Delete
17828 2 2 214 Recommended Questions 1, 2... 3 Edit Delete
17827 $\text{Environmental chemistry is best defined as:}$ $1.\ \text{Study of chemical processes in nature.}$ $2.\ \text{Study of biochemical processes in nature.}$ $3.\ \text{Both (1) and (2)}$ $4.\ \text{None of the above.}$ 2 214 Recommended Questions $\text{Study of chemical processes in nature.}$, $\text{Study of biochemical processes in nature.}$... 3 Edit Delete
17709 117 2 213 Recommended Questions 1, 2... 2 Edit Delete
17708 116 2 213 Recommended Questions 1, 2... 2 Edit Delete
17707 115 2 213 Recommended Questions 1, 2... 1 Edit Delete
17706 114 2 213 Recommended Questions 1, 2... 2 Edit Delete
17705 113 2 213 Recommended Questions 1, 2... 3 Edit Delete
17704 112 2 213 Recommended Questions 1, 2... 3 Edit Delete
17703 111 2 213 Recommended Questions 1, 2... 3 Edit Delete
17702 110 2 213 Recommended Questions 1, 2... 1 Edit Delete
17701 109 2 213 Recommended Questions 1, 2... 3 Edit Delete
17700 108 2 213 Recommended Questions 1, 2... 2 Edit Delete
17699 107 2 213 Recommended Questions 1, 2... 3 Edit Delete
17698 106 2 213 Recommended Questions 1, 2... 1 Edit Delete
17697 105 2 213 Recommended Questions 1, 2... 1 Edit Delete
17696 104 2 213 Recommended Questions 1, 2... 1 Edit Delete
17695 103 2 213 Recommended Questions 1, 2... 2 Edit Delete
17694 102 2 213 Recommended Questions 1, 2... 4 Edit Delete
17693 101 2 213 Recommended Questions 1, 2... 2 Edit Delete
17692 100 2 213 Recommended Questions 1, 2... 1 Edit Delete
17691 99 2 213 Recommended Questions 1, 2... 4 Edit Delete
17690 98 2 213 Recommended Questions 1, 2... 4 Edit Delete
17689 97 2 213 Recommended Questions 1, 2... 4 Edit Delete
17688 96 2 213 Recommended Questions 1, 2... 3 Edit Delete
17687 95 2 213 Recommended Questions 1, 2... 4 Edit Delete
17686 94 2 213 Recommended Questions 1, 2... 3 Edit Delete
17685 93 2 213 Recommended Questions 1, 2... 3 Edit Delete
17684 92 2 213 Recommended Questions 1, 2... 2 Edit Delete
17683 91 2 213 Recommended Questions 1, 2... 4 Edit Delete
17682 90 2 213 Recommended Questions 1, 2... 2 Edit Delete
17681 89 2 213 Recommended Questions 1, 2... 3 Edit Delete
17680 $n\text{-Butylbenzene on oxidation with hot alkaline } \text{KMnO}_4 \text{ gives:}$ 2 213 Recommended Questions $\text{Benzoic acid}$, $\text{Butanoic acid}$... 1 Edit Delete
17679 $\text{The reactants used in Friedel-Craft's alkylation are:}$ $1.\ \text{C}_6\text{H}_6 + \text{NH}_2$ $2.\ \text{C}_6\text{H}_6 + \text{CH}_4$ $3.\ \text{C}_6\text{H}_6 + \text{CH}_3\text{Cl}$ $4.\ \text{C}_6\text{H}_6 + \text{CH}_3\text{OCl}$ 2 213 Recommended Questions $\text{C}_6\text{H}_6 + \text{NH}_2$, $\text{C}_6\text{H}_6 + \text{CH}_4$... 3 Edit Delete
17678 $\text{Benzene} + \text{CH}_3\text{Cl} \overset{\text{AlCl}_3}{\longrightarrow} \text{C}_6\text{H}_5\text{CH}_3$ $\text{The mechanism \& intermediate involved in the above reaction are:}$ 2 213 Recommended Questions $\text{Aromatic electrophilic substitution \& carbocation}$, $\text{Aromatic Nucleophilic substitution \& carbanion}$... 1 Edit Delete
17677 $\text{What is the role of AlCl}_3 \text{ in a Friedel-Crafts reaction?}$ 2 213 Recommended Questions $\text{Absorbs HCl}$, $\text{Releases HCl}$... 3 Edit Delete
17676 $\text{The major product obtained in the given reaction is:}$ $\text{C}_6\text{H}_6 + \text{C}_6\text{H}_{12} \xrightarrow{\text{H}_2\text{SO}_4} \text{(2 mole)}$ 2 213 Recommended Questions $\text{Option 1:}$, $\text{Option 2:}$... 2 Edit Delete
17675 $\text{Which of the following compounds is non-aromatic?}$ 2 213 Recommended Questions $\text{Compound 1}$, $\text{Compound 2}$... 2 Edit Delete
17674 $\text{The most stable conformation of the product of the following reaction is:}$ $\text{C} \equiv \text{CH} \xrightarrow{\text{HBr} / \text{R}_2\text{O}_2 \ (1 \text{ equivalent})} \xrightarrow{\text{HBr} / \text{dark}}$ 2 213 Recommended Questions $\text{Ph} \ \text{CH} \ \text{Br} \ \text{H}$, $\text{Ph} \ \text{H} \ \text{Br} \ \text{Br}$... 4 Edit Delete
17673 $\text{An alkene among the following that reacts fastest with } \text{H}_2 \text{ under catalytic conditions is -}$ 2 213 Recommended Questions $\text{Option 1: (structure with R groups and H)}$, $\text{Option 2: (structure with R groups and H)}$... 1 Edit Delete
17672 $\text{The dihedral angle of the least stable conformer of ethane is:}$ 2 213 Recommended Questions $60^\circ$, $0^\circ$... 2 Edit Delete
17671 $\text{An organic molecule necessarily shows optical activity if it:}$ $1. \text{Contains asymmetric carbon atoms}$ $2. \text{Is non-planar}$ $3. \text{Is non-superimposable on its mirror image}$ $4. \text{Is superimposable on its mirror image}$ 2 213 Recommended Questions $\text{Contains asymmetric carbon atoms}$, $\text{Is non-planar}$... 3 Edit Delete
17670 $\text{The compound that has least hindered rotation around carbon-carbon bond is-}$ 2 213 Recommended Questions $\text{Ethane}$, $\text{Ethylene}$... 1 Edit Delete
17669 $\text{A compound possessing optical isomerism provided it has the molecular formula } \text{C}_7\text{H}_{16}, \text{ would be:}$ 2 213 Recommended Questions $2,3\text{-Dimethyl pentane}$, $2,2\text{-Dimethyl butane}$... 1 Edit Delete
17668 $\text{The C – H bond and C – C bond in ethane are formed by overlapping of -}$ 2 213 Recommended Questions $\text{sp}^3 - \text{s and sp}^3 - \text{sp}^3$, $\text{sp}^2 - \text{s and sp}^2 - \text{sp}^2$... 1 Edit Delete
17667 $\text{The molecule among the following that has the hybridization}$ $\text{sp}^2, \text{sp}^2, \text{sp}, \text{and sp from left to right atoms is:}$ 2 213 Recommended Questions $\text{HC} \equiv \text{C} - \text{C} \equiv \text{H}$, $\text{CH}_2 = \text{CH} - \text{C} \equiv \text{CH}$... 2 Edit Delete
17666 $\text{In the given hydrocarbon,}$ $\text{CH}_3 - \text{CH} = \text{CH} - \text{CH}_2 - \text{C} \equiv \text{CH}$ $\text{The type/state of hybridization of carbons 1, 3, and 5 respectively are:}$ 2 213 Recommended Questions $\text{sp}^2, \text{sp}, \text{sp}^3$, $\text{sp}, \text{sp}^3, \text{sp}^2$... 2 Edit Delete
17665 $\text{The compound that will react most readily with gaseous bromine has the formula:}$ 2 213 Recommended Questions $\text{C}_3\text{H}_6$, $\text{C}_2\text{H}_2$... 1 Edit Delete
17664 $\text{Product (P) in the above-mentioned reaction is:}$ 2 213 Recommended Questions $\text{Cyclohexane}$, $\text{Cyclohexane with two D atoms on adjacent carbons}$... 2 Edit Delete
17663 $[A]$ $\text{and}$ $[B]$ $\text{in the mentioned reaction are respectively:}$ 2 213 Recommended Questions $\text{Alc. KOH and NaNH}_2$, $\text{NaNH}_2 \text{and Lindlar catalyst}$... 1 Edit Delete
17662 $\text{the correct relation of rate of reaction towards reduction using (H}_2/\text{Pt):}$ 2 213 Recommended Questions $a > b$, $a = b$... 1 Edit Delete
17661 $\text{The compound } \text{C}_7\text{H}_8 \text{ undergoes the following reactions}$ $\text{C}_7\text{H}_8 \xrightarrow{3 \text{Cl}_2 / \text{hv}} \text{A} \xrightarrow{\text{Br}_2 / \text{Fe}} \text{B} \xrightarrow{\text{Zn / HCl}} \text{C}$ $\text{The product 'C' is-}$ 2 213 Recommended Questions $\text{m-Bromotoluene}$, $\text{o-Bromotoluene}$... 1 Edit Delete
17660 68 2 213 Recommended Questions 1, 2... 1 Edit Delete
17659 67 2 213 Recommended Questions 1, 2... 1 Edit Delete
17658 66 2 213 Recommended Questions 1, 2... 1 Edit Delete
17657 65 2 213 Recommended Questions 1, 2... 4 Edit Delete
17656 64 2 213 Recommended Questions 1, 2... 2 Edit Delete
17655 63 2 213 Recommended Questions 1, 2... 2 Edit Delete
17654 62 2 213 Recommended Questions 1, 2... 1 Edit Delete
17653 61 2 213 Recommended Questions 1, 2... 3 Edit Delete
17652 60 2 213 Recommended Questions 1, 2... 4 Edit Delete
17651 59 2 213 Recommended Questions 1, 2... 3 Edit Delete
17650 58 2 213 Recommended Questions 1, 2... 2 Edit Delete
17649 57 2 213 Recommended Questions 1, 2... 4 Edit Delete
17648 56 2 213 Recommended Questions 1, 2... 4 Edit Delete
17647 55 2 213 Recommended Questions 1, 2... 2 Edit Delete
17646 54 2 213 Recommended Questions 1, 2... 1 Edit Delete
17645 53 2 213 Recommended Questions 1, 2... 2 Edit Delete
17644 52 2 213 Recommended Questions 1, 2... 1 Edit Delete
17643 51 2 213 Recommended Questions 1, 2... 4 Edit Delete
17642 50 2 213 Recommended Questions 1, 2... 4 Edit Delete
17641 49 2 213 Recommended Questions 1, 2... 1 Edit Delete
17640 $\text{Above mentioned single molecule is obtained from ozonolysis. The starting cyclic compound is:}$ 2 213 Recommended Questions $\text{Option 1: Cyclopentene with two methyl groups at 1,4 positions}$, $\text{Option 2: Cyclopentene with one methyl group at 1 position}$... 1 Edit Delete
17639 $\text{The correct order of acidity among the following is:}$ 2 213 Recommended Questions $\text{CH} \equiv \text{CH} > \text{CH}_3 - \text{C} \equiv \text{CH} > \text{CH}_2 = \text{CH}_2 > \text{CH}_3 - \text{CH}_3$, $\text{CH} \equiv \text{CH} > \text{CH}_2 = \text{CH}_2 > \text{CH}_3 - \text{CH}_3$... 1 Edit Delete
17638 $\text{The reaction of } \text{C}_6\text{H}_5\text{CH} = \text{CHCH}_3 \text{ with HBr produces:}$ 2 213 Recommended Questions $\text{C}_6\text{H}_5\text{CHCH}_2\text{CH}_3 \quad \begin{array}{c} \text{Br} \end{array}$, $\text{C}_6\text{H}_5\text{CH}_2\text{CHCH}_3 \quad \begin{array}{c} \text{Br} \end{array}$... 1 Edit Delete
17637 $\text{The type of radicals that can be formed as intermediates during}$ $\text{monochlorination of 2-methylpropane is-}$ 2 213 Recommended Questions $\text{Primary and tertiary radicals}$, $\text{Two types of primary radicals}$... 1 Edit Delete
17636 $\text{Which is the most suitable reagent among the following to distinguish compound (III) from rest of the compounds?}$ $\text{I. CH}_3 - \text{C} \equiv \text{C} - \text{CH}_3$ $\text{II. CH}_3 - \text{CH}_2 - \text{CH}_2 - \text{CH}_3$ $\text{III. CH}_3 - \text{CH}_2 - \text{C} \equiv \text{CH}$ $\text{IV. CH}_3 - \text{CH} = \text{CH}_2$ 2 213 Recommended Questions $\text{Br}_2/\text{CCl}_4$, $\text{Br}_2/\text{CH}_3\text{COOH}$... 4 Edit Delete
17635 $\text{The main product of the following reaction will be-}$ $\text{OH} \quad \text{CH-CH}_3 \xrightarrow{\text{conc. H}_2\text{SO}_4} \text{Product}$ 2 213 Recommended Questions $\text{H}_2\text{C}=\text{CH-CH}_3$, $\text{H}_2\text{C}=\text{CH}_2$... 1 Edit Delete
17634 $\text{Given below is a reaction sequence:}$ $\text{(a)} \quad \text{CH}_3 - \text{CH} - \text{CH} - \text{CH}_3 \xrightarrow{\text{H}^+/\text{Heat}} \text{A} + \text{B}$ $\text{(b)} \quad \text{HBr, dark} \quad \text{in absence of peroxide} \quad \text{C} + \text{D}$ $\text{The compounds A and C are respectively:}$ 2 213 Recommended Questions $\text{CH}_3 \vert \text{CH}_3 - \text{C} = \text{CH}_2 \quad \text{and} \quad \text{CH}_3 - \text{C} - \text{CH}_2 - \text{CH}_3 \vert \text{Br}$, $\text{CH}_3 \vert \text{CH}_3 - \text{C} = \text{CH}_2 \quad \text{and} \quad \text{CH}_3 - \text{CH} - \text{CH} - \text{CH}_3 \vert \text{Br}$... 1 Edit Delete
17633 $\text{The major product(s) in the below reaction is-}$ $\text{H}_3\text{C} - \text{CH} = \text{CH}_2 \xrightarrow{\text{HBr}}^{(\text{Ph} - \text{CO} - \text{O})_2} S$ 2 213 Recommended Questions $\text{H}_3\text{C} - \text{CH}_2 - \text{CH}_2\text{Br}$ $1-\text{Bromopropane}$, $\text{CH}_3 - \text{CH} - \text{CH}_3 \ | \ \text{Br}$ $2-\text{Bromopropane}$... 1 Edit Delete
17632 $\text{HCl with an alkene X reacts in accordance with Markovnikov's rule to give 1-Chloro-1-methylcyclohexane. The structure of alkene (X) is:}$ 2 213 Recommended Questions $\text{Option 1: CH}_2\text{=CH-CH}_2\text{-CH}_2\text{-CH}_2\text{-CH}_3$, $\text{Option 2: CH}_3\text{-CH=CH-CH}_2\text{-CH}_2\text{-CH}_3$... 3 Edit Delete
17631 $\text{Baeyer's reagent is:}$ $1.\ \text{Acidified permanganate solution}$ $2.\ \text{Alkaline permanganate solution}$ $3.\ \text{Neutral permanganate solution}$ $4.\ \text{Aqueous bromine solution}$ 2 213 Recommended Questions $\text{Acidified permanganate solution}$, $\text{Alkaline permanganate solution}$... 2 Edit Delete
17630 $\text{Which of the following compounds will react with ammoniacal silver nitrate } \text{AgNO}_3?$ 2 213 Recommended Questions $\text{CH}_3\overset{\text{CH}_3}{\underset{|}{\text{CH}}} - \text{CH}_2 - \text{C} \equiv \text{C} - \text{CH}_3$, $\text{CH}_3 - \text{CH} = \text{CH} - \text{C} \equiv \text{CH}$... 2 Edit Delete
17629 $\text{Consider the following reaction,}$ $\text{H}_3\text{C} - \overset{\text{H}}{\underset{\text{D}}{\text{C}}} - \overset{\text{C}}{\underset{\text{CH}_3}{\text{C}}} - \text{CH}_3 + \text{Br}_2 \rightarrow \text{X} + \text{HBr}$ $\text{The structure of the major reaction intermediate formed in the above reaction is-}$ 2 213 Recommended Questions $\text{H}_3\text{C} - \overset{\text{H}}{\underset{\text{D}}{\text{C}}} - \overset{\cdot}{\text{C}}\text{H} - \text{CH}_2$, $\text{H}_3\text{C} - \overset{\text{H}}{\underset{\text{D}}{\text{C}}} - \overset{\cdot}{\text{C}} - \text{CH}_3$... 2 Edit Delete
17628 $\text{Anti-Markovnikov's addition of HBr is not observed in-}$ 2 213 Recommended Questions $\text{Propene}$, $\text{But-1-ene}$... 3 Edit Delete
17627 $\text{Chlorination of methane takes place by:}$ 2 213 Recommended Questions $\text{Elimination}$, $\text{S}_\text{N}1$... 3 Edit Delete
17626 $\text{Compound A:}$ $\text{Compound A (1 mole)} \xrightarrow{(i) \text{O}_3} \xrightarrow{(ii) \text{Zn} + \text{H}_2\text{O}} \text{HCHO (1 mole)} + \text{CH}_3\text{CHO (1 mole)}$ $\text{Compound A is:}$ 2 213 Recommended Questions $\text{Option 1:}$, $\text{Option 2:}$... 4 Edit Delete
17625 $\text{Which compound is expected to decolorize a cold, basic KMnO}_4 \text{ solution?}$ 2 213 Recommended Questions $\text{CH}_3 - \text{CH}_3$, $\text{CH}_3\text{CH}_2\text{CH}$... 4 Edit Delete
17624 $\text{An alkene 'A' on ozonolysis gives a mixture of ethanol and pentan-3-one.}$ $\text{The IUPAC name of 'A' is:}$ 2 213 Recommended Questions $\text{3-Ethylpent-2-ene}$, $\text{3-Ethylpent-2-yne}$... 1 Edit Delete
17623 $\text{The reaction of HBr with}$ $\begin{array}{c} \text{CH}_3 \\ \text{CH}_3 - \text{C} = \text{CH}_2 \end{array}$ $\text{in the presence of peroxide will give:}$ 2 213 Recommended Questions $\begin{array}{c} \text{Br} \\ \text{CH}_3 - \text{C} - \text{CH}_3 \\ \text{CH}_3 \end{array}$, $\text{CH}_3 - \text{CH}_2 - \text{CH}_2 - \text{CH}_2 - \text{Br}$... 3 Edit Delete
17622 $\text{Decreasing order of acidic behavior of benzene, n-hexane, and ethyne is:}$ 2 213 Recommended Questions $\text{Hexane} > \text{Ethyne} > \text{Benzene}$, $\text{Benzene} > \text{Hexane} > \text{Ethyne}$... 3 Edit Delete
17621 $\text{The most acidic compound among the following is-}$ $1.\ \text{CH}_3 - \text{CH}_3$ $2.\ \text{CH}_3 - \text{C} \equiv \text{CH}$ $3.\ \text{CH}_2 = \text{CH}_2$ $4.\ \text{CH}_3\text{C} \equiv \text{C} - \text{CH}_3$ 2 213 Recommended Questions $\text{CH}_3 - \text{CH}_3$, $\text{CH}_3 - \text{C} \equiv \text{CH}$... 2 Edit Delete
17620 $\text{The major product in the above mentioned reaction is:}$ $\text{H}_3\text{C} - \text{C} \equiv \text{CH}_2 \xrightarrow{\text{H}_2\text{O}/\text{H}^+} \text{A} + \text{B}$ $\text{Major Product} \quad \text{Minor Product}$ 2 213 Recommended Questions $\text{H}_3\text{C} - \text{C} - \text{CH} - \text{CH}_3 \quad \text{CH}_3 \quad \text{OH}$, $\text{CH}_3 - \text{C} - \text{CH}_2 - \text{CH}_3 \quad \text{CH}_3 \quad \text{OH}$... 1 Edit Delete
17619 $\text{Which of the following alkenes will yield only ketones when treated with ozone?}$ 2 213 Recommended Questions $\text{Cyclopropane with a methyl group}$, $\text{2,3-Dimethyl-2-butene}$... 3 Edit Delete
17618 $\text{Acidic hydrogen present among the following compound is -}$ 2 213 Recommended Questions $\text{Ethyne}$, $\text{Ethene}$... 1 Edit Delete
17617 $\text{The products formed after ozonolysis of Pent-2-ene are:}$ 2 213 Recommended Questions $\text{Ethanol and Methanal}$, $\text{Ethanol and Propanal}$... 2 Edit Delete
17616 $\text{The reaction,}$ $\text{C}_6\text{H}_6 + \text{CH}_3\text{Cl} \xrightarrow{\text{Anhydrous } \text{AlCl}_3} \text{C}_6\text{H}_5\text{CH}_3 + \text{HCl}$ $\text{is an example of:}$ 2 213 Recommended Questions $\text{Friedel-Crafts reaction}$, $\text{Kolbe's synthesis}$... 1 Edit Delete
17615 $1,2\text{-dibromopropane on treatment with } X \text{ moles of } \text{NaNH}_2 \text{ followed by treatment with ethyl bromine gave a pent-2-yne. The value of } X \text{ is -}$ 2 213 Recommended Questions $1$, $2$... 3 Edit Delete
17614 $\text{The final product in the above sequence of reactions is-}$ 2 213 Recommended Questions $\text{CH}_3\text{COOH}$, $\text{CH}_3\text{CH}_2\text{COOH}$... 2 Edit Delete
17613 $\text{The major product in the above-mentioned reaction is:}$ 2 213 Recommended Questions $\text{Option 1: Cyclohexane with Br at primary carbon}$, $\text{Option 2: Cyclohexane with Br at secondary carbon}$... 4 Edit Delete
17612 $\text{The compound among the following that yield propyne on hydrolysis is:}$ 2 213 Recommended Questions $\text{Al}_4\text{C}_3$, $\text{Mg}_2\text{C}_3$... 2 Edit Delete
17611 $\text{Which of the following statement(s) is/are correct about the elimination reaction of 2-Bromopentane to form pent-2-ene:}$ $\text{(a) } \beta\text{-Elimination reaction}$ $\text{(b) Follows Zaitsev rule}$ $\text{(c) Dehydrohalogenation reaction}$ $\text{(d) Dehydration reaction}$ 2 213 Recommended Questions $\text{(a), (c), (d)}$, $\text{(b), (c), (d)}$... 4 Edit Delete
17610 $3\text{-Hexyne can be converted to trans-3-Hexene by the action of:}$ 2 213 Recommended Questions $\text{H}_2 \text{- Pd/ BaSO}_4$, $\text{Li-Liq. NH}_3$... 2 Edit Delete
17609 $\text{The main product A and B in the above mentioned reaction are respectively-}$ 2 213 Recommended Questions $\text{(A) } \text{Br-CH}_2\text{-CH=CH}_2 \quad \text{(B) } \text{Br-CH}_2\text{-CH}_2\text{-CH}_3$, $\text{(A) } \text{Br-CH}_2\text{-CH}_2\text{-CH}_3 \quad \text{(B) } \text{Br-CH}_2\text{-CH=CH}_2$... 3 Edit Delete
17608 $\text{CH}_3\text{Cl} \ \& \ \text{C}_2\text{H}_5\text{Cl} \ \text{undergoes Wurtz reaction to give-}$ 2 213 Recommended Questions $\text{Propane + Ethane}$, $\text{Propane}$... 3 Edit Delete
17607 $\text{Which of the following compounds will exhibit the lowest heat of hydrogenation?}$ 2 213 Recommended Questions $\text{H}_3\text{C} - \text{CH} = \text{CH} - \text{CH}_3$, $\text{H}_2\text{C} = \text{C} = \text{CH}_2$... 4 Edit Delete
17606 $\text{Among the two isomers given above, the reason behind higher boiling point of one isomer as compared to the order is:}$ 2 213 Recommended Questions $\text{Cis - less polar than trans}$, $\text{Trans - more polar than cis}$... 3 Edit Delete
17605 $\text{The linear molecules among the following is:}$ 2 213 Recommended Questions $\text{CH}_3 - \text{C} \equiv \text{C} - \text{CH}_3$, $\text{CH}_2 = \text{CH} - \text{CH}_2 - \text{C} \equiv \text{CH}$... 1 Edit Delete
17604 $\text{Which of the following Hydrocarbon has the highest octane number?}$ 2 213 Recommended Questions $\text{Methane}$, $\text{Ethane}$... 3 Edit Delete
17603 $\text{Which of the following compounds has the highest melting point?}$ 2 213 Recommended Questions $\text{C}_4\text{H}_{10}$, $\text{C}_5\text{H}_{12}$... 4 Edit Delete
17602 $\text{A compound having the highest boiling point among the following is -}$ 2 213 Recommended Questions $\text{Iso-octane}$, $\text{n-Octane}$... 2 Edit Delete
17601 $\text{A compound having the shortest carbon-carbon bond length among the following is:}$ $\text{1. Benzene}$ $\text{2. Ethene}$ $\text{3. Ethyne}$ $\text{4. Ethane}$ 2 213 Recommended Questions $\text{Benzene}$, $\text{Ethene}$... 3 Edit Delete
17600 $\text{If Compound A (C}_4\text{H}_8\text{) is treated with H}_2\text{O/H}_2\text{SO}_4\text{ and forms an optically inactive C}_4\text{H}_{10}\text{O, what is the structure of A?}$ 2 213 Recommended Questions $\text{CH}_3\text{CH}_2\text{CH} = \text{CH}_2$, $\text{CH}_3\text{CH} = \text{CHCH}_3$... 3 Edit Delete
17599 $\text{The isobutyl group among the following is:}$ 2 213 Recommended Questions $\text{CH}_3-\text{CH}-\text{CH}_2-\text{CH}_3$, $\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_2-$... 4 Edit Delete
17598 $\text{The incorrect IUPAC name among the following is:}$ 2 213 Recommended Questions $\text{Br} - \text{C} = \text{C} - \text{CH}_2 \newline \text{H} \quad \text{H} \newline \text{1-bromoprop-2-ene}$, $\text{CH}_3 \text{CH}_2 \text{C} - \text{C} - \text{C} - \text{CH}_3 \newline \text{H} \quad \text{Br} \quad \text{CH}_3 \newline \text{4-bromo-2, 4-dimethylhexane}$... 1 Edit Delete
17597 $\text{The correct IUPAC name of the given compound is:}$ 2 213 Recommended Questions $3\text{-Ethyl-4-ethenylheptane}$, $3\text{-Ethyl-4-propylhex-5-ene}$... 4 Edit Delete
17596 $\text{H}_3\text{C} - \text{C} = \text{C} - \text{CH}_2 \xrightarrow{\text{HBr} \text{ Peroxide}} \text{Y} \xrightarrow{\text{C}_2\text{H}_5\text{ONA}} \text{Z}$ $\text{Product Z in the above-mentioned reaction is:}$ 2 213 Recommended Questions $\text{CH}_3 - (\text{CH}_2)_3 - \text{O} - \text{CH}_2\text{CH}_3$, $(\text{CH}_3)_2\text{CH}_2 - \text{O} - \text{CH}_2\text{CH}_3$... 1 Edit Delete
17595 $\text{The most suitable reagent for the following conversion is-}$ $\text{H}_3\text{C} - \text{C} \equiv \text{C} - \text{CH}_3 \rightarrow \text{cis-but-2-ene}$ 2 213 Recommended Questions $\text{Hg}^{2+}/\text{H}^+, \text{H}_2\text{O}$, $\text{Na/liquid NH}_3$... 3 Edit Delete
17594 $\text{An unsaturated hydrocarbon 'A' reacts with two molecules of H}_2 \text{ and upon}$ $\text{reductive ozonolysis A gives butane-1,4-dial, ethanal, and propanone.}$ $\text{The IUPAC name of A is:}$ 2 213 Recommended Questions $\text{2-Methylocta-2,6-diene}$, $\text{2-Methylocta-1,5-diene}$... 1 Edit Delete
17593 $\text{The correct statement regarding the comparison of staggered and eclipsed}$ $\text{conformations of ethane is:}$ 2 213 Recommended Questions $\text{The eclipsed conformation of ethane is more stable than staggered}$ $\text{conformation because eclipsed conformation has no torsional strain.}$, $\text{The eclipsed conformation of ethane is more stable than staggered}$ $\text{conformation even though the eclipsed conformation has a torsional}$ $\text{strain.}$... 3 Edit Delete
17592 $\text{An astronomical telescope has angular magnification of } 20 \text{ in its normal adjustment. Focal length of eyepiece is } 4 \text{ cm. Distance between objective and eyepiece is:}$ 1 124 Recommended Questions $80 \text{ cm}$, $84 \text{ cm}$... 2 Edit Delete
17591 $\text{Focal length of objective lens and eyepiece of an astronomical telescope are } 200 \text{ cm and } 10 \text{ cm respectively. The length of telescope for maximum magnification is nearly:}$ 1 124 Recommended Questions $207 \text{ cm}$, $210 \text{ cm}$... 2 Edit Delete
17590 $\text{In an astronomical telescope in normal adjustment a straight black line of length } L \text{ is drawn on inside part of the objective lens. The eye-piece forms a real image of this line. The length of this image is } l. \text{ The magnification of the telescope is:}$ 1 124 Recommended Questions $\frac{L}{l} + 1$, $\frac{L}{l} - 1$... 4 Edit Delete
17589 $\text{The length of an astronomical telescope adjusted for parallel light is } 90 \text{ cm.}$ $\text{If the magnifying power of the telescope is } 17, \text{ then the focal length of eyepiece and objective are respectively:}$ 1 124 Recommended Questions $10 \text{ cm and } 80 \text{ cm}$, $85 \text{ cm and } 5 \text{ cm}$... 4 Edit Delete
17588 $\text{An astronomical telescope has an objective and an eyepiece of focal lengths } 40 \text{ cm and } 4 \text{ cm respectively. To view an object } 200 \text{ cm away from the objective, the lenses must be separated by a distance:}$ 1 124 Recommended Questions $46.0 \text{ cm}$, $50.0 \text{ cm}$... 3 Edit Delete
17587 $\text{The minimum magnifying power of an astronomical telescope is } 40. \text{ If the length of the telescope is } 205 \text{ cm, then the focal length of its field lens is:}$ 1 124 Recommended Questions $5 \text{ cm}$, $200 \text{ cm}$... 2 Edit Delete
17586 $\text{An astronomical telescope has angular magnification of } 40 \text{ in its normal adjustment. If focal length of eyepiece is } 5 \text{ cm, the length of the telescope is:}$ 1 124 Recommended Questions $190 \text{ cm}$, $200 \text{ cm}$... 3 Edit Delete
17585 $\text{In normal adjustment, the angular magnification of an astronomical telescope is } 39. \text{ If length of the tube is } 2 \text{ m, then focal length of the objective and eyepiece are respectively:}$ 1 124 Recommended Questions $195 \text{ cm, } 5 \text{ cm}$, $190 \text{ cm, } 10 \text{ cm}$... 1 Edit Delete
17584 $\text{To increase the magnifying power of a telescope:}$ 1 124 Recommended Questions $\text{The focal length of the eyepiece should be increased.}$, $\text{The focal length of the objective should be increased.}$... 2 Edit Delete
17583 $\text{The magnifying power of a telescope is } 9. \text{ When it is adjusted for parallel rays the distance between the objective and eyepiece is } 20 \text{ cm. The focal lengths of lenses are:}$ 1 124 Recommended Questions $10 \text{ cm, } 10 \text{ cm}$, $15 \text{ cm, } 5 \text{ cm}$... 3 Edit Delete
17582 $\text{In an astronomical telescope, the focal length of the objective lens is } 100 \text{ cm}$ $\text{and of the eyepiece is } 2 \text{ cm. The magnifying power of the telescope for the normal eye is:}$ 1 124 Recommended Questions $50$, $10$... 1 Edit Delete
17581 $\text{In a compound microscope, the magnification is } 95, \text{ the distance of the object from the objective lens is } \left( \frac{1}{3.8} \right) \text{ cm and the focal length of the objective is } \frac{1}{4} \text{ cm. What is the magnification of the eyepiece when the final image is formed at the least distance of distinct vision?}$ $1. \text{ } 5$ $2. \text{ } 10$ $3. \text{ } 100$ $4. \text{ none of the above}$ 1 124 Recommended Questions $5$, $10$... 1 Edit Delete
17580 $\text{The focal length of the objective lens and the eye lens is } 4 \text{ mm and } 25 \text{ mm}$ $\text{respectively in a compound microscope. The distance between the objective}$ $\text{and eyepiece lens is } 16 \text{ cm. Its magnifying power for relaxed eye position is:}$ 1 124 Recommended Questions $32.75$, $327.5$... 2 Edit Delete
17579 $\text{A microscope has an objective of focal length } 1.5 \text{ cm and an eyepiece of focal length } 2.5 \text{ cm.}$ $\text{If the distance between the objective and the eye-piece is } 25 \text{ cm,}$ $\text{what is the approximate value of magnification produced for the relaxed eye?}$ 1 124 Recommended Questions $75$, $110$... 3 Edit Delete
17578 $\text{If the focal length of the objective lens is increased, then magnifying power of:}$ 1 124 Recommended Questions $\text{microscope will increase but that of telescope decrease}$, $\text{microscope and telescope both will increase}$... 4 Edit Delete
17577 $\text{The magnification of a compound microscope for the final image at the least distance of distinct vision is } 90. \text{ The magnification of the objective lens is } 15. \text{ The value of the focal length of the eyepiece will be:}$ 1 124 Recommended Questions $5 \text{ cm}$, $6 \text{ cm}$... 1 Edit Delete
17576 $\text{The focal lengths of the objective and eyepiece of a compound microscope are } 2 \text{ cm and } 6.25 \text{ cm respectively. An object } AB \text{ is placed at a distance of } 2.5 \text{ cm from the objective which forms the image } A'B' \text{ as shown in the figure. The maximum magnifying power in this case, will be:}$ 1 124 Recommended Questions $10$, $20$... 2 Edit Delete
17575 $\text{The correct statement is:}$ 1 124 Recommended Questions $\text{The intermediate image in a compound microscope is real, erect and magnified}$, $\text{Intermediate image in a compound microscope is real, inverted, but diminished}$... 4 Edit Delete
17574 $\text{In the case of a compound microscope, the image formed by the objective lens is:}$ 1 124 Recommended Questions $\text{Virtual, erect, and diminished.}$, $\text{Real, erect, and magnified.}$... 4 Edit Delete
17573 $\text{A ray of light incident on an equilateral prism at grazing incidence emerges}$ $\text{from the prism at grazing emergence. The Refractive index of the prism is:}$ 1 124 Recommended Questions $1.5$, $1.8$... 4 Edit Delete
17572 $\text{If there is no emergent light through a prism of refracting angle } 60^\circ, \text{ whatever may be the angle of incidence, then the minimum value of the refractive index of the material of the prism is:}$ 1 124 Recommended Questions $2$, $\sqrt{2}$... 1 Edit Delete
17571 $\text{A ray of light incident on a prism of angle } A \text{ and refractive index } \mu \text{ will not emerge out of the prism for any angle of incidence, if:}$ $1. \ \mu > \sin \frac{A}{2}$ $2. \ \mu > \cos A$ $3. \ \mu < \frac{1}{\sin A}$ $4. \ \mu > \frac{1}{\sin \frac{A}{2}}$ 1 124 Recommended Questions $\mu > \sin \frac{A}{2}$, $\mu > \cos A$... 4 Edit Delete
17570 $\text{A ray of light is incident on an equilateral prism at an angle of incidence } i \text{ such that it is incident normally on other refracting faces. Find } i. \ [\text{Take } \mu_{\text{glass}} = 2]$ 1 124 Recommended Questions $30^\circ$, $45^\circ$... 4 Edit Delete
17569 $\text{For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index:}$ 1 124 Recommended Questions $\text{lies between } \sqrt{2} \text{ and } 1.$, $\text{lies between } 2 \text{ and } \sqrt{2}$... 2 Edit Delete
17568 $\text{A ray of light is incident at an angle of incidence, } i, \text{ on one face of a prism of angle } A \text{ (assumed to be small) and emerges normally from the opposite face.}$ $\text{If the refractive index of the prism is } \mu, \text{ the angle of incidence } i \text{ is nearly equal to:}$ 1 124 Recommended Questions $\mu A$, $\frac{\mu A}{2}$... 1 Edit Delete
17567 $\text{Given below are two statements:}$ $\text{Assertion (A): The angle of deviation depends on the angle of the prism.}$ $\text{Reason (R): For the thin prism, } \delta = (\mu - 1)A.$ 1 124 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
17566 $\text{The Refractive index of material of an equilateral prism is } \sqrt{2}. \text{ Angle of incidence for minimum deviation is:}$ $1.\ 60^\circ$ $2.\ 45^\circ$ $3.\ 30^\circ$ $4.\ 15^\circ$ 1 124 Recommended Questions $60^\circ$, $45^\circ$... 2 Edit Delete
17565 $\text{One of the refracting surfaces of a prism is silvered. A ray is incident at an angle } 60^\circ, \text{ such that it retraces its path. The angle of the prism is: } (\mu = \sqrt{3})$ 1 124 Recommended Questions $30^\circ$, $45^\circ$... 1 Edit Delete
17564 $\text{If a light ray is incident normally on face } AB \text{ of a prism, then for no emergent ray from second face } AC:$ $[\mu \rightarrow \text{ refractive index of glass of prism}]$ 1 124 Recommended Questions $\mu = \frac{2}{\sqrt{3}}$, $\mu > \frac{2}{\sqrt{3}}$... 2 Edit Delete
17563 $\text{A graph is plotted between the angle of deviation } \delta \text{ in a triangular prism and the angle of incidence as shown in the figure. Refracting angle of the prism is:}$ 1 124 Recommended Questions $28^\circ$, $48^\circ$... 3 Edit Delete
17562 $\text{The angle of incidence for a ray of light at a refracting surface of a prism is } 45^\circ . \text{ The angle of the prism is } 60^\circ . \text{ If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are:}$ 1 124 Recommended Questions $45^\circ, \sqrt{2}$, $30^\circ, \sqrt{2}$... 2 Edit Delete
17561 $\text{The angle of minimum deviation for a glass prism of refractive index } \mu = \sqrt{3} \text{ equals the refracting angle of the prism. The angle of the prism is:}$ 1 124 Recommended Questions $30^\circ$, $60^\circ$... 2 Edit Delete
17560 $\text{The refractive index of the material of a prism is } \sqrt{2} \text{ and its refracting angle is } 30^\circ. \text{ One of the refracting surfaces of the prism is made a mirror inwards.}$ $\text{A beam of monochromatic light entering the prism from the other face will retrace its path after reflection from the mirrored surface if its angle of incidence on the prism is:}$ 1 124 Recommended Questions $60^\circ$, $0^\circ$... 4 Edit Delete
17559 $\text{The refracting angle of a prism is } A, \text{ and refractive index of the material of the prism is } \cot\left(\frac{A}{2}\right). \text{ The angle of minimum deviation is:}$ 1 124 Recommended Questions $180^\circ - 3A$, $180^\circ - 2A$... 2 Edit Delete
17558 $\text{A ray of light is incident on an equilateral glass prism placed on a horizontal table as shown. For minimum deviation, a true statement is:}$ 1 124 Recommended Questions $PQ \text{ is horizontal}$, $QR \text{ is horizontal}$... 2 Edit Delete
17557 $\text{The angle of a prism is } A \text{ and one of its refracting surfaces is silvered. Light rays falling at an angle of incidence } 2A \text{ on the first surface return through the same path after suffering reflection at the second (silvered) surface. The refractive index of the material is:}$ 1 124 Recommended Questions $2 \sin A$, $2 \cos A$... 2 Edit Delete
17556 $\text{A ray of light falls on a prism } ABC \ (AB = BC) \text{ and travels as shown in figure. The refractive index of the prism material should be greater than:}$ 1 124 Recommended Questions $\frac{4}{3}$, $\sqrt{2}$... 2 Edit Delete
17555 $\text{The condition of minimum deviation is achieved in an equilateral prism kept on the prism table of a spectrometer. If the angle of incidence is } 50^\circ, \text{ the angle of deviation is:}$ 1 124 Recommended Questions $25^\circ$, $40^\circ$... 2 Edit Delete
17554 $\text{A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of a convex lens. If the distance between parallel walls is } d \text{ then the required focal length of the lens placed in between the walls is:}$ 1 124 Recommended Questions $\text{Only } \frac{d}{4}$, $\text{Only } \frac{d}{2}$... 4 Edit Delete
17553 $\text{Two point light sources are 24 cm apart. Where should a convex lens of focal length 9 cm be put in between them from one source so that the images of both the sources are formed at the same place?}$ 1 124 Recommended Questions $6 \text{ cm}$, $9 \text{ cm}$... 1 Edit Delete
17552 $\text{An object is placed at a point distance } x \text{ from the focus of a convex lens and its image is formed at } I \text{ as shown in the figure. The distances } x \text{ and } x' \text{ satisfy the relation:}$ 1 124 Recommended Questions $\frac{x + x'}{2} = f$, $f = xx'$... 4 Edit Delete
17551 $\text{On an optical bench a point object is placed at the mark of 10 cm, a convex lens of focal length 15 cm at the mark of 40 cm and a concave lens of focal length 15 cm placed at the mark of 60 cm. The final image is formed at the mark of: (point object and two lenses are coaxial)}$ 1 124 Recommended Questions $30 \text{ cm}$, $80 \text{ cm}$... 3 Edit Delete
17550 $\text{Three identical thin convex lenses are kept as shown in the figure. A ray passing through the lens is shown. The focal length of each lens is:}$ 1 124 Recommended Questions $5 \text{ cm}$, $10 \text{ cm}$... 1 Edit Delete
17549 $\text{A point object } O \text{ is placed at a distance } 20 \text{ cm from a biconvex lens of the radius of curvature } 20 \text{ cm and } \mu = 1.5. \text{ The final image produced by lens and mirror combination will be at:}$ 1 124 Recommended Questions $10 \text{ cm from the mirror}$, $20 \text{ cm from the lens}$... 3 Edit Delete
17548 $\text{A luminous object is placed at a distance of } 30 \text{ cm from the convex lens with a focal length of } 20 \text{ cm.}$ $\text{On the other side of the lens, at what distance from the lens, a convex mirror with a radius of curvature of } 10 \text{ cm be placed in order to have an upright image of the object coincident with it?}$ 1 124 Recommended Questions $12 \text{ cm}$, $30 \text{ cm}$... 3 Edit Delete
17547 $\text{A liquid of refractive index } 1.33 \text{ is placed between two identical plano-convex lenses, with refractive index } 1.50. \text{ Two possible arrangements, } P \text{ and } Q, \text{ are shown. The system is:}$ 1 124 Recommended Questions $\text{divergent in } P, \text{ convergent in } Q$, $\text{convergent in } P, \text{ divergent in } Q$... 3 Edit Delete
17546 $\text{When an object is placed at } 10 \text{ cm and } 30 \text{ cm from a convex lens, images obtained are of the same magnitude of magnification. The focal length of the lens may be:}$ 1 124 Recommended Questions $10 \text{ cm}$, $15 \text{ cm}$... 3 Edit Delete
17545 $\text{A lens having focal length } f \text{ and aperture of diameter } d \text{ forms an image of intensity } I. \text{ An aperture of diameter } \frac{d}{2} \text{ in central region of lens is covered by a black paper. The focal length of lens and intensity of the image now will be respectively:}$ 1 124 Recommended Questions $f \text{ and } \frac{I}{4}$, $\frac{3f}{4} \text{ and } \frac{I}{2}$... 3 Edit Delete
17544 $\text{A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length 10 cm. The diameter of the sun is } 1.39 \times 10^9 \text{ m and its mean distance from the earth is } 1.5 \times 10^{11} \text{ m. What is the diameter of the sun's image on the paper?}$ 1 124 Recommended Questions $9.2 \times 10^{-4} \text{ m}$, $6.5 \times 10^{-4} \text{ m}$... 1 Edit Delete
17543 $\text{A liquid of refractive index } \frac{4}{3} \text{ is placed between two identical plano-convex lenses touching each other at their spherical surfaces of radius } R. \text{ If the refractive index of the lens is } 1.50, \text{ then the lens behaves as:}$ 1 124 Recommended Questions $\text{a convergent with power } P = \frac{1}{3R}$, $\text{a convergent with power } P = \frac{1}{6R}$... 1 Edit Delete
17542 $\text{The distance between a convex lens and a plane mirror is } 10 \text{ cm. The parallel rays incident on the convex lens, after reflection from the mirror form image at the optical centre of the lens. Focal length of the lens will be:}$ 1 124 Recommended Questions $10 \text{ cm}$, $20 \text{ cm}$... 2 Edit Delete
17541 $\text{A concave lens forms the image of an object such that the distance between the object and image is 10 cm.}$ $\text{If magnification of the image is } \frac{1}{4}, \text{ the focal length of the lens is:}$ 1 124 Recommended Questions $-\frac{20}{3} \text{ cm}$, $\frac{20}{3} \text{ cm}$... 4 Edit Delete
17540 $\text{If the space between two convex lenses of glass in the combination shown in the figure below is filled with water, then:}$ 1 124 Recommended Questions $\text{the focal length of the system will decrease.}$, $\text{the focal length of the system will increase.}$... 2 Edit Delete
17539 $\text{A converging beam of rays is incident on a diverging lens. Having passed through the lens the rays intersect at a point } 15 \text{ cm from the lens on the opposite side. If the lens is removed the point where the rays meet will move } 5 \text{ cm closer to the lens. The focal length of the lens is:}$ 1 124 Recommended Questions $-10 \text{ cm}$, $20 \text{ cm}$... 3 Edit Delete
17538 $\text{Two convex lenses of focal length } X \text{ and } Y \text{ are placed parallel to each other.}$ $\text{An object at infinity from the first lens forms its image at infinity from the}$ $\text{second lens. The separation between the two lenses should be:}$ 1 124 Recommended Questions $X + Y$, $\frac{X + Y}{2}$... 1 Edit Delete
17537 $\text{A thin equiconvex lens of power } P \text{ is cut into three parts } A, B, \text{ and } C \text{ as shown in the figure. If } P_1, P_2 \text{ and } P_3 \text{ are powers of the three parts respectively, then:}$ 1 124 Recommended Questions $P_1 = P_2 = P_3$, $P_1 > P_2 = P_3$... 2 Edit Delete
17536 $\text{Two similar plano-convex lenses are combined together in three different ways as shown in the adjoining figure. The ratio of the focal lengths in three cases will be:}$ 1 124 Recommended Questions $1 : 2 : 2$, $1 : 1 : 1$... 2 Edit Delete
17535 $\text{In the diagram shown below, the image of the point object } O \text{ is formed at } I \text{ by the convex lens of focal length } 20 \text{ cm, where } F_1 \text{ and } F_2 \text{ are foci of the lens.}$ $\text{The value of } x' \text{ is:}$ 1 124 Recommended Questions $10 \text{ cm}$, $20 \text{ cm}$... 4 Edit Delete
17534 $\text{A lens forms an image of a point object placed at distance } 20 \text{ cm from it. The image is formed just in front of the object at a distance } 4 \text{ cm from the object (and towards the lens). The power of the lens is:}$ 1 124 Recommended Questions $-2.25 \text{ D}$, $1.75 \text{ D}$... 3 Edit Delete
17533 $\text{The power of an equi-convex lens is } P. \text{ After cutting it in different ways, the combination of lenses is listed in Column I, along with their effective powers in Column II. Match the items in the two columns.}$ $\text{Column I}$ $\text{(A)}$ $\text{(B)}$ $\text{(C)}$ $\text{(D)}$ $\text{Column II}$ $\text{(P) zero}$ $\text{(Q) } P$ $\text{(R) } 2P$ $\text{(S) } \frac{P}{2}$ 1 124 Recommended Questions $\text{A} \rightarrow \text{Q}, \text{B} \rightarrow \text{P}, \text{C} \rightarrow \text{S}, \text{D} \rightarrow \text{R}$, $\text{A} \rightarrow \text{S}, \text{B} \rightarrow \text{R}, \text{C} \rightarrow \text{Q}, \text{D} \rightarrow \text{P}$... 3 Edit Delete
17532 $\text{A biconvex lens is cut into two halves along (i) } XOX' \text{ and (ii) } YOY' \text{ as shown in the figure. Let } f, f', f'' \text{ be the focal lengths of the complete lens, of each half in case (i), and of each half in case (ii), respectively.}$ 1 124 Recommended Questions $f' = f, f'' = 2f$, $f' = 2f, f'' = f$... 1 Edit Delete
17531 $\text{A concave lens of focal length } 25 \text{ cm produces an image } \frac{1}{10} \text{th of the size of the object. The distance of the object from the lens is:}$ 1 124 Recommended Questions $225 \text{ cm}$, $250 \text{ cm}$... 1 Edit Delete
17530 $\text{The focal length of a convex lens is } 40 \text{ cm and the size of the inverted image formed is half of the object. The distance of the object is:}$ 1 124 Recommended Questions $60 \text{ cm}$, $120 \text{ cm}$... 2 Edit Delete
17529 $\text{Two convex lenses of focal lengths 10 cm and 30 cm are kept at a separation of 20 cm. Then the correct statement is:}$ 1 124 Recommended Questions $\text{the effective focal length is 15 cm.}$, $\text{the chromatic aberration is minimized.}$... 4 Edit Delete
17528 $\text{Two identical equiconvex thin lenses each of focal lengths } 20 \text{ cm, made of material of refractive index } 1.5 \text{ are placed coaxially in contact as shown. Now, the space between them is filled with a liquid with a refractive index of } 1.5. \text{ The equivalent power of this arrangement will be:}$ 1 124 Recommended Questions $+5 \text{ D}$, $\text{zero}$... 1 Edit Delete
17527 $\text{A plane convex lens } (\mu = 1.5) \text{ has a radius of curvature } 10 \text{ cm.}$ $\text{It is silvered on its plane surface.}$ $\text{The focal length of the lens after silvering is:}$ 1 124 Recommended Questions $10 \text{ cm}$, $20 \text{ cm}$... 1 Edit Delete
17526 $\text{A plane-convex lens fits exactly into a plano-concave lens. Their plane surfaces are parallel to each other. If lenses are made of different materials of refractive indices } \mu_1 \text{ and } \mu_2 \text{ and } R \text{ is the radius of curvature of the curved surface of the lenses, then the focal length of the combination is:}$ 1 124 Recommended Questions $\frac{R}{2(\mu_1 + \mu_2)}$, $\frac{R}{2(\mu_1 - \mu_2)}$... 3 Edit Delete
17525 $\text{The focal length of a glass } (\mu = 1.5) \text{ lens in air is } 20 \text{ cm. If it is dipped in water } (\mu = \frac{4}{3}) \text{ its focal length in water will be:}$ 1 124 Recommended Questions $80 \text{ cm}$, $40 \text{ cm}$... 1 Edit Delete
17524 $\text{A convex lens is dipped in a liquid whose refractive index is equal to the}$ $\text{refractive index of the lens. Then its focal length will:}$ 1 124 Recommended Questions $\text{become zero.}$, $\text{become infinite.}$... 2 Edit Delete
17523 $\text{A concave mirror of the focal length } f_1 \text{ is placed at a distance of } d \text{ from a convex lens of focal length } f_2. \text{ A beam of light coming from infinity and falling on this convex lens-concave mirror combination returns to infinity. The distance } d \text{ must be equal to:}$ 1 124 Recommended Questions $f_1 + f_2$, $-f_1 + f_2$... 4 Edit Delete
17522 $\text{A ray of light falls on a transparent sphere as shown in the figure. If the final ray emerges from the sphere parallel to the horizontal diameter, then calculate the refractive index of the sphere. Consider that the sphere is kept in the air.}$ 1 124 Recommended Questions $\sqrt{2}$, $\sqrt{3}$... 2 Edit Delete
17521 $\text{A spherical fishbowl of radius } 15 \text{ cm is filled with water of refractive index } \frac{4}{3}. \text{ A cat standing outside in the air at a distance of } 30 \text{ cm from the centre of the fishbowl is looking at the fish. At what distance from the centre would the cat appear to the fish situated at the centre?}$ 1 124 Recommended Questions $45 \text{ cm}$, $30 \text{ cm}$... 1 Edit Delete
17520 $\text{A mark on the surface of the sphere } \left( \mu = \frac{3}{2} \right) \text{ is viewed from a diametrically}$ $\text{opposite position. It appears to be at a distance } 15 \text{ cm from its actual}$ $\text{position. The radius of the sphere is:}$ $1. \ 15 \text{ cm}$ $2. \ 5 \text{ cm}$ $3. \ 7.5 \text{ cm}$ $4. \ 2.5 \text{ cm}$ 1 124 Recommended Questions $15 \text{ cm}$, $5 \text{ cm}$... 3 Edit Delete
17519 $\text{A glass sphere } \left( \mu = \frac{3}{2} \right) \text{ of radius } 12 \text{ cm has a small mark at a distance of } 3 \text{ cm from its centre. Where will this mark appear when it is viewed from the side nearest to the mark along the line joining the centre and the mark?}$ 1 124 Recommended Questions $8 \text{ cm inside the sphere}$, $12 \text{ cm inside the sphere}$... 1 Edit Delete
17518 $\text{In a glass } (\mu = 1.5) \text{ sphere with a radius of } 10 \text{ cm, there is an air bubble } B \text{ at a distance of } 5 \text{ cm from } C. \text{ The distance of the bubble from the surface of the sphere (i.e., point } A) \text{ as observed from the point } P \text{ in the air will be:}$ 1 124 Recommended Questions $4.5 \text{ cm}$, $20.0 \text{ cm}$... 2 Edit Delete
17517 $\text{The slab of a refractive index material equal to } 2 \text{ shown in the figure has a curved surface } APB \text{ of a radius of curvature of } 10 \text{ cm and a plane surface } CD. \text{ On the left of } APB \text{ is air and on the right of } CD \text{ is water with refractive indices as given in the figure. An object } O \text{ is placed at a distance of } 15 \text{ cm from the pole } P \text{ as shown. The distance of the final image of } O \text{ from } P \text{ as viewed from the left is:}$ 1 124 Recommended Questions $20 \text{ cm}$, $30 \text{ cm}$... 2 Edit Delete
17516 $\text{The following diagram shows a glass sphere of radius } 10 \text{ cm with a paraxial incident ray.}$ $\text{The refractive index of the material of the glass is:}$ 1 124 Recommended Questions $2$, $1.5$... 1 Edit Delete
17515 $\text{In the following diagram, what is the distance } x \text{ if the radius of curvature is } R = 15 \text{ cm?}$ 1 124 Recommended Questions $30 \text{ cm}$, $20 \text{ cm}$... 1 Edit Delete
17514 $\text{A glass slab is placed with the right-angled prism as shown in the figure. The possible value of } \theta \text{ such that light incident normally on the prism does not pass through the glass slab is:}$ 1 124 Recommended Questions $30^\circ$, $37^\circ$... 4 Edit Delete
17513 $\text{A plane mirror is placed horizontally inside water } \left( \mu = \frac{4}{3} \right).$ $\text{A ray falls normally on it. Then the mirror is rotated through an angle } \theta.$ $\text{The minimum value of } \theta \text{ for which the ray does not come out of the water surface is:}$ 1 124 Recommended Questions $\frac{\pi}{4}$, $\sin^{-1}\left(\frac{3}{4}\right)$... 3 Edit Delete
17512 $\text{A light ray from the air is incident (as shown in the figure) at one end of glass}$ $\text{fibre (refractive index } \mu = 1.5) \text{ making an incidence angle of } 60^\circ \text{ on the lateral}$ $\text{surface so that it undergoes a total internal reflection. How much time would it}$ $\text{take to traverse the straight fibre of a length of 1 km?}$ 1 124 Recommended Questions $3.33 \, \mu s$, $6.67 \, \mu s$... 3 Edit Delete
17511 $\text{To a diver inside water, the setting sun will appear at an angle (with the horizontal) of: } \left[ \mu_w = \frac{5}{4} \right]$ 1 124 Recommended Questions $53^\circ$, $37^\circ$... 2 Edit Delete
17510 $\text{A light ray is incident at an angle of } 30^\circ \text{ on a transparent surface separating two media.}$ $\text{If the angle of refraction is } 60^\circ, \text{ then the critical angle is:}$ 1 124 Recommended Questions $\sin^{-1}\left(\frac{1}{\sqrt{3}}\right)$, $\sin^{-1}\left(\sqrt{3}\right)$... 1 Edit Delete
17509 $\text{For the given incident ray as shown in the figure, in the condition of the total}$ $\text{internal reflection of this ray, the minimum refractive index of the prism will be:}$ 1 124 Recommended Questions $\frac{\sqrt{3} + 1}{2}$, $\frac{\sqrt{2} + 1}{2}$... 3 Edit Delete
17508 $\text{A rod of glass } (\mu = 1.5) \text{ and of the square cross-section is bent into the shape as shown.}$ $\text{A parallel beam of light falls on the plane's flat surface } A \text{ as shown in the figure.}$ $\text{If } d \text{ is the width of a side and } R \text{ is the radius of a circular arc}$ $\text{then for what maximum value of } \frac{d}{R}, \text{ light entering the glass slab through the surface } A \text{ will emerge from the glass through } B?$ 1 124 Recommended Questions $1.5$, $0.5$... 2 Edit Delete
17507 $\text{A small coin is resting on the bottom of a beaker filled with a liquid. A ray of light from the coin travels up, to the surface of the liquid and moves along its surface (see figure).}$ $\text{How fast is the light traveling in the liquid?}$ 1 124 Recommended Questions $1.8 \times 10^8 \text{ m/s}$, $2.4 \times 10^8 \text{ m/s}$... 1 Edit Delete
17506 $\text{A fish is a little away below the surface of a lake. If the critical angle is } 49^\circ, \text{ then the fish could see things above the water surface within an angular range of } \theta^\circ \text{ where:}$ 1 124 Recommended Questions $\theta = 49^\circ$, $\theta = 90^\circ$... 3 Edit Delete
17505 $\text{If } C_1, C_2 \text{ and } C_3 \text{ are the critical angle of glass-air interface for red, violet and yellow color, then:}$ 1 124 Recommended Questions $C_3 > C_2 > C_1$, $C_1 > C_2 > C_3$... 4 Edit Delete
17504 $\text{Given below are two statements:}$ $\text{Statement I:}$ $\text{In total internal reflection, the angle of incidence must be greater than a certain minimum angle which depends on the media involved.}$ $\text{Statement II:}$ $\text{Total internal reflection cannot occur when light is traveling from an optically rarer to an optically denser medium.}$ 1 124 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 2 Edit Delete
17503 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{Critical angle of light passing from angle to air is minimum for violet colour.}$ $\text{Reason (R):}$ \text{The wavelength of violet light is greater than the light of other colours.}$ 1 124 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
17502 $\text{In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be the angle of refraction?}$ 1 124 Recommended Questions $90^\circ$, $180^\circ$... 1 Edit Delete
17501 $\text{Light enters at an angle of incidence in a transparent rod of refractive index } n. \text{ For what value of the refractive index of the material of the rod, will the light, once entered into it, not leave it through its lateral face whatsoever be the value of the angle of incidence?}$ 1 124 Recommended Questions $n > \sqrt{2}$, $1.0$... 1 Edit Delete
17500 $\text{The ratio of the velocity of light in a medium to the velocity of light in a vacuum is } \frac{4}{5}. \text{ If the ray of light is emerging from this medium into the air, then the critical angle for this interface of medium and air will be:}$ 1 124 Recommended Questions $30^\circ$, $37^\circ$... 3 Edit Delete
17499 $\text{The speed of light in media } M_1 \text{ and } M_2 \text{ is } 1.5 \times 10^8 \text{ m/s and } 2.0 \times 10^8 \text{ m/s respectively. A ray of light enters from medium } M_1 \text{ to } M_2 \text{ at an incidence angle } i. \text{ If the ray suffers total internal reflection, the value of } i \text{ is:}$ 1 124 Recommended Questions $\text{equal to } \sin^{-1}\left(\frac{2}{3}\right)$, $\text{equal to or less than } \sin^{-1}\left(\frac{3}{5}\right)$... 3 Edit Delete
17498 $\text{A diverging beam of light from a point source } S \text{ having divergence angle } \alpha, \text{ falls symmetrically on a glass slab as shown.}$ $\text{The angles of incidence of the two extreme rays are equal.}$ $\text{If the thickness of the glass slab is } t \text{ and the refractive index } n, \text{ then the divergence angle of the emergent beam is:}$ 1 124 Recommended Questions $\text{zero}$, $\alpha$... 2 Edit Delete
17497 $\text{A beam of light composed of red and green rays is incident obliquely at a point on the face of a rectangular glass slab. When coming out on the opposite parallel face, the red and green rays emerge from:}$ 1 124 Recommended Questions $\text{Two points propagating in two different parallel directions}$, $\text{One point propagating in two different directions through the slab}$... 1 Edit Delete
17496 $\text{For a light incident from air on a slab of refractive index 2, the maximum possible angle of refraction is:}$ 1 124 Recommended Questions $30^\circ$, $45^\circ$... 1 Edit Delete
17495 $\text{A fish at a depth } y \text{ inside the water is seeing a bird.}$ $\text{The bird is at a height } x \text{ above the water level.}$ $\text{If the refractive index of water is } \mu, \text{ then the apparent distance of bird as seen by the fish is:}$ 1 124 Recommended Questions $x + \mu y$, $y + \mu x$... 2 Edit Delete
17494 $\text{Two slabs } P \text{ and } Q \text{ of transparent materials have a thickness in the ratio } 2 : 5. \text{ If a ray of light takes the same amount of time to move from } A \text{ to } B \text{ and } B \text{ to } C, \text{ then the refractive index of } Q \text{ with respect to } P \text{ will be:}$ 1 124 Recommended Questions $0.4$, $2.5$... 1 Edit Delete
17493 $\text{A plane mirror is placed at the bottom of a fish tank filled with water of refractive index } \frac{4}{3}. \text{ The fish is at a height 10 cm above the plane mirror. An observer } O \text{ is vertically above the fish outside the water. The apparent distance between the fish and its image is:}$ 1 124 Recommended Questions $15 \text{ cm}$, $30 \text{ cm}$... 1 Edit Delete
17492 $\text{An air bubble in a glass slab with refractive index } 1.5 \text{ (near-normal incidence) is } 5 \text{ cm deep when viewed from one surface and } 3 \text{ cm deep when viewed from the opposite face. The thickness (in cm) of the slab is:}$ 1 124 Recommended Questions $8$, $10$... 3 Edit Delete
17491 $\text{In the figure shown the angle made by the light ray with the normal in the medium of refractive index } \sqrt{2} \text{ is:}$ $n_1 = 1$ $n_2 = \sqrt{3}$ $n_3 = \sqrt{2}$ $n_4 = 2$ $n_5 = 1.6$ 1 124 Recommended Questions $30^\circ$, $60^\circ$... 1 Edit Delete
17490 $\text{When a ray of light falls on a given plate at an angle of incidence } 60^\circ, \text{ the reflected and refracted rays are found to be normal to each other. The refractive index of the material of the plate is:}$ 1 124 Recommended Questions $\frac{\sqrt{3}}{2}$, $1.5$... 3 Edit Delete
17489 $\text{A medium shows relation between } i \text{ and } r \text{ as shown. If the speed of light in the medium is } nc \text{ then the value of } n \text{ is:}$ $\sin r$ $\sin i$ 1 124 Recommended Questions 1.5, 2... 4 Edit Delete
17488 $\text{The graph between } u \text{ and } v \text{ for a convex mirror is:}$ 1 124 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
17487 $\text{A concave mirror of focal length } f \text{ produces an image } n \text{ times the size of the object. If the image is real, then the distance of the object from the mirror is:}$ 1 124 Recommended Questions $(n - 1)f$, $\frac{(n - 1)}{n}f$... 3 Edit Delete
17486 $\text{A point object is moving on the principal axis of a concave mirror of focal length } 24 \text{ cm towards the mirror.}$ $\text{When it is at a distance of } 60 \text{ cm from the mirror, its velocity is } 9 \text{ cm/sec.}$ $\text{What is the velocity of the image at that instant?}$ 1 124 Recommended Questions $5 \text{ cm/sec towards the mirror}$, $4 \text{ cm/sec towards the mirror}$... 3 Edit Delete
17485 $\text{A square of side } 3 \text{ cm is placed at a distance of } 25 \text{ cm from a concave mirror of focal length } 10 \text{ cm.}$ $\text{The centre of the square is at the axis of the mirror and the plane is normal to the axis.}$ $\text{The area enclosed by the image of the square is:}$ 1 124 Recommended Questions $4 \text{ cm}^2$, $6 \text{ cm}^2$... 1 Edit Delete
17484 $\text{The distance between the object and its real image formed by a concave mirror is minimum when the distance of the object from the center of curvature of the mirror is: (where } f \text{ is the focal length of the mirror)}$ 1 124 Recommended Questions $\text{zero}$, $\frac{f}{2}$... 1 Edit Delete
17483 $\text{A thin rod of length } \frac{f}{3} \text{ lies along the axis of a concave mirror of focal length } f.$ $\text{One end of its magnified, real image touches an end of the rod. The length of the image is:}$ 1 124 Recommended Questions $f$, $\frac{f}{2}$... 2 Edit Delete
17482 $\text{A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away from the mirror. The length of the image is:}$ 1 124 Recommended Questions $10 \text{ cm}$, $15 \text{ cm}$... 4 Edit Delete
17481 $\text{A convex mirror of focal length } f \text{ forms an image which is } \frac{1}{n} \text{ times the length of the object. The distance of the object from the mirror is:}$ 1 124 Recommended Questions $\left( n - 1 \right) f$, $\left( \frac{n - 1}{n} \right) f$... 1 Edit Delete
17480 $\text{A concave mirror gives an image three times as large as the object placed at a distance of } 20 \text{ cm from it. For the image to be real, the focal length should be:}$ 1 124 Recommended Questions $10 \text{ cm}$, $15 \text{ cm}$... 2 Edit Delete
17479 $\text{A } 4.5 \text{ cm needle is placed } 12 \text{ cm away from a convex mirror of focal length } 15 \text{ cm. What is the magnification?}$ $1.\ 0.5$ $2.\ 0.56$ $3.\ 0.45$ $4.\ 0.15$ 1 124 Recommended Questions $0.5$, $0.56$... 2 Edit Delete
17478 $\text{When a concave mirror of focal length } f \text{ is immersed in water, its focal length becomes } f', \text{ then:}$ 1 124 Recommended Questions $f' = f$, $f' < f$... 1 Edit Delete
17477 12 1 124 Recommended Questions 1, 2... 1 Edit Delete
17476 $\text{The diagram represents a concave mirror, where } F \text{ is the principal focus and } f \text{ is the focal length. The mirror is used to produce an image of an object.}$ $\text{Which of the following statements are correct? (assume the mirror is parabolic)}$ 1 124 Recommended Questions $(A) \text{ Incident rays traveling parallel to the principal axis always pass through } F \text{ after reflection.}$, $(B) \text{ Incident rays passing through } F \text{ always travel parallel to the principal axis after reflection.}$... 4 Edit Delete
17475 $\text{An object is at a distance of } 30 \text{ cm in front of a concave mirror of focal length } 10 \text{ cm. The image of the object will be:}$ 1 124 Recommended Questions $\text{smaller in size.}$, $\text{inverted.}$... 4 Edit Delete
17474 $\text{An object is placed } 20 \text{ cm in front of a concave mirror of a radius of curvature } 10 \text{ cm.}$ $\text{The position of the image from the pole of the mirror is:}$ 1 124 Recommended Questions $7.67 \text{ cm}$, $6.67 \text{ cm}$... 2 Edit Delete
17473 $\text{Image formed by a plane mirror is:}$ 1 124 Recommended Questions $\text{real}$, $\text{virtual}$... 3 Edit Delete
17472 $\text{A car is moving on a straight road at a speed of } 50 \text{ km/h and a truck is ahead of the car and has a large plane mirror fixed vertically on the back of the truck.}$ $\text{The truck is running at a speed of } 70 \text{ km/h.}$ $\text{For a stationary observer standing between the car and the truck, what is the speed of the image of the car in the mirror?}$ 1 124 Recommended Questions $40 \text{ km/h}$, $70 \text{ km/h}$... 4 Edit Delete
17471 $\text{A point source of light } B \text{ is placed at a distance } L \text{ in front of the centre of a mirror of width } d \text{ hung vertically on a wall. A man } (A) \text{ walks in front of the mirror along a line parallel to the mirror at a distance } 2L \text{ from it as shown. The greatest distance over which he can see the image of the light source in the mirror is:}$ 1 124 Recommended Questions $\frac{d}{2}$, $d$... 4 Edit Delete
17470 $\text{A plane mirror approaches a stationary person with acceleration of } 10 \text{ ms}^{-2}. \text{ The acceleration of his image as seen by the person, will be:}$ 1 124 Recommended Questions $10 \text{ m/s}^2$, $20 \text{ m/s}^2$... 2 Edit Delete
17469 $\text{Light of wavelength } 5000 \, \text{\AA} \text{ falls on a plane reflecting surface. For what angle of incidence is the reflected ray normal to the incident ray?}$ 1 124 Recommended Questions $37^\circ$, $45^\circ$... 2 Edit Delete
17468 $\text{Two plane mirrors, } A \text{ and } B \text{ are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of } 30^\circ \text{ at a point just inside one end of } A. \text{ The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflections (excluding the first one) before it emerges out is:}$ 1 124 Recommended Questions $28$, $30$... 2 Edit Delete
17467 $\text{The correct mirror image of the figure is:}$ 1 124 Recommended Questions $\text{Option 1}$, $\text{Option 2}$... 3 Edit Delete
17466 $\text{A tall man, of height 6 feet, wants to see his full image. The required minimum length of the mirror will be:}$ 1 124 Recommended Questions $12 \text{ feet}$, $3 \text{ feet}$... 2 Edit Delete
17465 $\text{The } \text{X-ray} \text{ beam can be deflected by:}$ 1 123 Recommended Questions $\text{Magnetic field}$, $\text{Electric field}$... 4 Edit Delete
17464 $\text{Which of the following has the minimum wavelength?}$ 1 123 Recommended Questions $\text{X-rays}$, $\text{Ultraviolet rays}$... 4 Edit Delete
17463 $\text{Which physical quantity does not change in a vacuum for } X\text{-rays?}$ $1. \text{ Speed of light}$ $2. \text{ Wavelength}$ $3. \text{ Frequency}$ $4. \text{ None of these}$ 1 123 Recommended Questions $\text{Speed of light}$, $\text{Wavelength}$... 1 Edit Delete
17462 $\text{Which of the following statements about electromagnetic waves is/are correct:}$ $\text{A. } \text{X-rays in a vacuum travel faster than light waves in a vacuum.}$ $\text{B. The energy of a } \text{X-ray photon is greater than that of a light photon.}$ $\text{C. Light can be polarised but } \text{X-rays cannot.}$ 1 123 Recommended Questions $\text{A and B only}$, $\text{B and C only}$... 4 Edit Delete
17461 $\text{The frequency } 1057 \text{ MHz of radiation arising due to electron transition between two close energy levels in hydrogen belongs to:}$ 1 123 Recommended Questions $\text{radio waves}$, $\text{infrared waves}$... 1 Edit Delete
17460 $\text{The energy of the EM wave is of the order of 15 KeV. To which part of the spectrum does it belong?}$ 1 123 Recommended Questions $\text{X-rays}$, $\text{Infrared rays}$... 1 Edit Delete
17459 $\text{What is the cause of "Greenhouse effect"?}$ 1 123 Recommended Questions $\text{Infra-red rays}$, $\text{Ultraviolet rays}$... 1 Edit Delete
17458 $\text{An electromagnetic radiation has an energy } 14.4 \text{ keV. To which region of the electromagnetic spectrum does it belong?}$ $1. \text{ Infrared region}$ $2. \text{ Visible region}$ $3. \text{ X-ray region}$ $4. \gamma\text{-ray region}$ 1 123 Recommended Questions $\text{Infrared region}$, $\text{Visible region}$... 3 Edit Delete
17457 $\text{Which of the following electromagnetic waves has minimum frequency?}$ 1 123 Recommended Questions $\text{Radio waves}$, $\text{Infrared waves}$... 1 Edit Delete
17456 $\text{The EM wave with the shortest wavelength among the following is:}$ 1 123 Recommended Questions $\text{Ultraviolet rays}$, $X\text{-rays}$... 3 Edit Delete
17455 $\text{Light is a kind of wave. The wavelength of visible light ranges from about } 4000 \, \text{\AA} \text{ to } 7000 \, \text{\AA}. \text{ Which of the following statements is false?}$ 1 123 Recommended Questions $\text{Ultraviolet light has a wavelength shorter than } 4000 \, \text{\AA}.$, $\text{Infrared light has a wavelength longer than } 7000 \, \text{\AA}.$... 4 Edit Delete
17454 $\text{Match List I with List II:}$ $\begin{array}{|c|c|} \hline \text{List I} & \text{List II} \\ \hline \text{(a) Ultraviolet rays} & \text{(i) Study crystal structure} \\ \text{(b) Microwaves} & \text{(ii) Greenhouse effect} \\ \text{(c) Infrared waves} & \text{(iii) Sterilizing surgical instrument} \\ \text{(d) X-rays} & \text{(iv) Radar system} \\ \hline \end{array}$ $\text{Choose the correct options from the given ones:}$ 1 123 Recommended Questions $(a) \rightarrow (iii), (b) \rightarrow (iv), (c) \rightarrow (ii), (d) \rightarrow (i)$, $(a) \rightarrow (iii), (b) \rightarrow (i), (c) \rightarrow (ii), (d) \rightarrow (iv)$... 1 Edit Delete
17453 $\text{The frequency order for } \gamma\text{-rays } (b), \text{ X-rays } (a), \text{ and } UV\text{-rays } (c) \text{ is:}$ 1 123 Recommended Questions $b > a > c$, $a > b > c$... 1 Edit Delete
17452 $\text{The decreasing order of the wavelength of infrared, microwave, ultraviolet and gamma rays is:}$ 1 123 Recommended Questions $\text{Gamma rays, ultraviolet, infrared, microwaves}$, $\text{Microwaves, gamma rays, infrared, ultraviolet}$... 4 Edit Delete
17451 $\text{The condition under which a microwave oven heats up a food item containing water molecules most efficiently is:}$ 1 123 Recommended Questions $\text{the frequency of the microwave must match the resonant frequency of the water molecules.}$, $\text{the frequency of the microwave has no relation to the natural frequency of water molecules.}$... 1 Edit Delete
17450 $\text{The most penetrating radiation out of the following is:}$ $1.\ \text{X-rays}$ $2.\ \beta\text{-rays}$ $3.\ \alpha\text{-rays}$ $4.\ \gamma\text{-rays}$ 1 123 Recommended Questions $\text{X-rays}$, $\beta\text{-rays}$... 4 Edit Delete
17449 $\text{Which of the following is not an electromagnetic wave?}$ 1 123 Recommended Questions $\text{Radio wave}$, $\text{Micro wave}$... 3 Edit Delete
17448 $\lambda_v$, $\lambda_x$, \text{and } \lambda_m$ \text{ represent the wavelengths of visible light, } x\text{-rays and microwaves respectively, then:} $1. \lambda_m > \lambda_x > \lambda_v$ $2. \lambda_v > \lambda_m > \lambda_x$ $3. \lambda_v > \lambda_x > \lambda_m$ $4. \lambda_m > \lambda_v > \lambda_x$ 1 123 Recommended Questions $\lambda_m > \lambda_x > \lambda_v$, $\lambda_v > \lambda_m > \lambda_x$... 4 Edit Delete
17447 $\text{Which statement is correct for X-rays and gamma rays?}$ 1 123 Recommended Questions $\text{X-rays are emitted from electronic transitions while gamma rays are emitted from nuclear transitions.}$, $\text{X-rays have less penetrating power in comparison to gamma rays, in general.}$... 4 Edit Delete
17446 $\text{Which colour of light has the longest wavelength?}$ 1 123 Recommended Questions $\text{violet}$, $\text{red}$... 2 Edit Delete
17445 $\text{Choose the correct option:}$ 1 123 Recommended Questions $\text{The radiation in increasing order of frequency are radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays.}$, $\text{The wavelength of colours in increasing order is violet, indigo, green, yellow, orange and red.}$... 4 Edit Delete
17444 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{Electromagnetic waves propagate through all media with a speed } c = \frac{1}{\sqrt{\varepsilon_0 \mu_0}}.$ $\text{Statement II:}$ \text{Electromagnetic waves can undergo reflection and refraction.}$ 1 123 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 1 Edit Delete
17443 $\text{In an electromagnetic wave:}$ 1 123 Recommended Questions $\text{power is transmitted along the magnetic field.}$, $\text{power is transmitted along the electric field.}$... 4 Edit Delete
17442 $\text{An electromagnetic wave going through the vacuum is described by}$ $E = E_0 \sin(kx - \omega t).$ $\text{Which is the following is/are independent of the wavelength?}$ 1 123 Recommended Questions $k$, $\frac{k}{\omega}$... 2 Edit Delete
17441 $\text{The electric field of an electromagnetic wave in free space is given by}$ $\vec{E} = 10 \cos(10^7 t + kx) \hat{j} \ \text{V/m, where} \ t \ \text{and} \ x \ \text{are in seconds and meters respectively. It can be inferred that:}$ $1. \ \text{The wavelength} \ \lambda \ \text{is} \ 188.4 \ \text{m.}$ $2. \ \text{The wave number} \ k \ \text{is} \ 0.33 \ \text{rad/m.}$ $3. \ \text{The wave amplitude is} \ 10 \ \text{V/m.}$ $4. \ \text{The wave is propagating along} \ +x \ \text{direction}$ $\text{Which one of the following pairs of statements is correct?}$ 1 123 Recommended Questions $(3) \ \text{and} \ (4)$, $(1) \ \text{and} \ (2)$... 4 Edit Delete
17440 $\text{The intensity of visible radiation at a distance of 1 m from a bulb of 100 W which converts only } 5\% \text{ of its power into light, is:}$ 1 123 Recommended Questions $0.4 \text{ W/m}^2$, $0.5 \text{ W/m}^2$... 1 Edit Delete
17439 $\text{A lamp radiates power } P_0 \text{ uniformly in all directions. The amplitude of electric field strength } E_0 \text{ at a distance } r \text{ from it is:}$ 1 123 Recommended Questions $E_0 = \frac{P_0}{2\pi \varepsilon_0 c r^2}$, $E_0 = \sqrt{\frac{P_0}{2\pi \varepsilon_0 c r^2}}$... 2 Edit Delete
17438 $\text{A lamp emits monochromatic green light uniformly in all directions. The lamp is } 3\% \text{ efficient in converting electrical power to electromagnetic waves and consumes } 100 \text{ W of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of } 5 \text{ m from the lamp will be:}$ 1 123 Recommended Questions $1.34 \text{ V/m}$, $2.68 \text{ V/m}$... 2 Edit Delete
17437 $\text{The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is:}$ $\text{(} c = \text{speed of electromagnetic waves)}$ 1 123 Recommended Questions $1 : 1$, $1 : c$... 1 Edit Delete
17436 $\text{In an electromagnetic wave, if the electric field oscillated sinusoidally with an amplitude of } 48 \, \text{Vm}^{-1}, \text{ then the RMS value of the oscillating magnetic field will be:}$ $1. \; 1.6 \times 10^{-8} \, \text{T}$ $2. \; 1.6 \times 10^{-9} \, \text{T}$ $3. \; 144 \times 10^{-8} \, \text{T}$ $4. \; 11.3 \times 10^{-8} \, \text{T}$ 1 123 Recommended Questions $1.6 \times 10^{-8} \, \text{T}$, $1.6 \times 10^{-9} \, \text{T}$... 4 Edit Delete
17435 $\text{Consider the following statements about electromagnetic waves and choose the correct ones:}$ $\text{S}_1: \text{Electromagnetic waves having wavelengths 1000 times smaller than light waves are called X-rays.}$ $\text{S}_2: \text{Ultraviolet waves are used in the treatment of swollen joints.}$ $\text{S}_3: \text{Alpha and gamma rays are not electromagnetic waves.}$ $\text{S}_4: \text{de-Broglie waves are not electromagnetic in nature.}$ $\text{S}_5: \text{Electromagnetic waves exhibit polarization while sound waves do not.}$ 1 123 Recommended Questions $\text{S}_1, \text{S}_4, \text{and S}_5$, $\text{S}_3, \text{S}_4, \text{and S}_5$... 1 Edit Delete
17434 $\text{If an electromagnetic wave going through a medium is given by;}$ $E = E_0 \sin(kx - \omega t) \text{ and } B = B_0 \sin(kx - \omega t), \text{ then:}$ 1 123 Recommended Questions $E_0k = B_0\omega$, $\text{If the electric field is in the } z\text{-direction then the magnetic field should be in the } -y\text{-direction}$... 3 Edit Delete
17433 $\text{In electromagnetic wave the phase difference between electric and magnetic field vectors } \vec{E} \text{ and } \vec{B} \text{ is:}$ 1 123 Recommended Questions $0$, $\frac{\pi}{2}$... 1 Edit Delete
17432 $\text{The speed of an electromagnetic wave in a medium of dielectric constant } 2.25$ $\text{ and relative permeability } 4 \text{ is approximately:}$ 1 123 Recommended Questions $1 \times 10^8 \text{ m/s}$, $2.5 \times 10^8 \text{ m/s}$... 1 Edit Delete
17431 $\text{In an electromagnetic wave in free space, the root mean square value of the electric field is } E_{\text{rms}} = 6 \text{ V/m. The peak value of the magnetic field is:}$ 1 123 Recommended Questions $2.83 \times 10^{-8} \text{ T}$, $0.70 \times 10^{-8} \text{ T}$... 1 Edit Delete
17430 $\text{For a transparent medium, relative permeability and permittivity, } \mu_r \text{ and } \varepsilon_r \text{ are } 1.0 \text{ and } 1.44 \text{ respectively. The velocity of light in this medium would be:}$ 1 123 Recommended Questions $2.5 \times 10^8 \text{ m/s}$, $3 \times 10^8 \text{ m/s}$... 1 Edit Delete
17429 $\text{If an electromagnetic wave of frequency } f = 3 \text{ MHz passes from vacuum into a dielectric medium with relative permittivity } K = 4.0, \text{ then:}$ 1 123 Recommended Questions $\text{wavelength is 2 times and frequency becomes half.}$, $\text{wavelength is half and frequency remains unchanged.}$... 2 Edit Delete
17428 $\text{In a plane EM wave, the electric field oscillates sinusoidally at a frequency of } 2.5 \times 10^{10} \text{ Hz and amplitude } 480 \text{ V/m.}$ $\text{The amplitude of the oscillating magnetic field will be:}$ 1 123 Recommended Questions $1.52 \times 10^{-8} \text{ Wb/m}^2$, $1.52 \times 10^{-7} \text{ Wb/m}^2$... 3 Edit Delete
17427 $\text{If } \varepsilon_0 \text{ and } \mu_0 \text{ represent the permittivity and permeability of vacuum and } \varepsilon \text{ and } \mu \text{ represent the permittivity and permeability of the medium, the refractive index of the medium is given by:}$ 1 123 Recommended Questions $\sqrt{\frac{\varepsilon_0 \mu_0}{\varepsilon \mu}}$, $\sqrt{\frac{\varepsilon \mu}{\varepsilon_0 \mu_0}}$... 2 Edit Delete
17426 $\text{The electric field part of an electromagnetic wave in a vacuum is;}$ $\vec{E} = (3.1 \text{ N/C}) \cos[(1.8 \text{ rad/m}) y + (5.4 \times 10^8 \text{ rad/s}) t] \hat{i}.$ $\text{What is the frequency of the wave?}$ 1 123 Recommended Questions $5.7 \times 10^7 \text{ Hz}$, $9.3 \times 10^7 \text{ Hz}$... 3 Edit Delete
17425 $\text{The electric field associated with an electromagnetic wave in vacuum is given by } E = 40 \cos(kz - 6 \times 10^8 t), \text{ where } E, z, \text{ and } t \text{ are in volt/m, meter, and second respectively. The value of the wave vector } k \text{ would be:}$ 1 123 Recommended Questions $2 \text{ m}^{-1}$, $0.5 \text{ m}^{-1}$... 1 Edit Delete
17424 $\text{The ratio of the amplitude of a magnetic field to the amplitude of an electric field for an electromagnetic wave propagating in a vacuum is equal to:}$ 1 123 Recommended Questions $\text{reciprocal of speed of light in vacuum.}$, $\text{the ratio of magnetic permeability to the electric susceptibility of vacuum.}$... 1 Edit Delete
17423 $\text{The electric field part of an electromagnetic wave in a medium is represented by:}$ $E_x = 0;$ $E_y = \left(2.5 \frac{\text{N}}{\text{C}}\right) \cos \left[ \left(2\pi \times 10^6 \frac{\text{rad}}{\text{s}}\right) t - \left(\pi \times 10^{-2} \frac{\text{rad}}{\text{m}}\right) x \right];$ $E_z = 0.$ $\text{The wave is:}$ 1 123 Recommended Questions $\text{Moving along } y\text{-direction with frequency } 2\pi \times 10^6 \text{ Hz and wavelength 200 m.}$, $\text{Moving along } +x\text{-direction with frequency } 10^6 \text{ Hz and wavelength 100 m.}$... 3 Edit Delete
17422 $\text{If an electromagnetic wave propagating through vacuum is described by}$ $E_y = E_0 \sin(kx - \omega t); \quad B_z = B_0 \sin(kx - \omega t), \text{ then:}$ 1 123 Recommended Questions $E_0 k = B_0 \omega$, $E_0 B_0 = \omega k$... 1 Edit Delete
17421 $\text{The energy density of the electromagnetic wave in vacuum is given by the relation:}$ 1 123 Recommended Questions $\frac{1}{2} \cdot \frac{E^2}{\varepsilon_0} + \frac{B^2}{2\mu_0}$, $\frac{1}{2} \varepsilon_0 E^2 + \frac{1}{2} \mu_0 B^2$... 4 Edit Delete
17420 $\text{The magnetic field in a plane electromagnetic wave is given by}$ $B_z = 2 \times 10^{-7} \sin(0.5 \times 10^3 x - 1.5 \times 10^{11} t) \text{ T.}$ $\text{The expression for the electric field will be:}$ 1 123 Recommended Questions $E_z = 30 \sqrt{2} \sin(0.5 \times 10^3 x - 1.5 \times 10^{11} t) \text{ V/m}$, $E_z = 60 \sin(0.5 \times 10^3 x - 1.5 \times 10^{11} t) \text{ V/m}$... 4 Edit Delete
17419 $\text{The sun delivers } 10^3 \text{ W/m}^2 \text{ of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions } 8 \text{ m} \times 20 \text{ m will be:}$ 1 123 Recommended Questions $2.56 \times 10^4 \text{ W}$, $6.4 \times 10^5 \text{ W}$... 4 Edit Delete
17418 $\text{An EM wave is propagating in a medium with a velocity } \vec{v} = v \hat{i}. \text{ The instantaneous oscillating electric field of this EM wave is along the } +y \text{ axis.}$ $\text{The direction of the oscillating magnetic field of the EM wave will be along:}$ 1 123 Recommended Questions $-z\text{-direction}$, $+z\text{-direction}$... 2 Edit Delete
17417 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{Light can travel in vacuum but sound cannot do so.}$ $\text{Reason (R):}$ $\text{Light is an electromagnetic wave and sound is a mechanical wave.}$ 1 123 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
17416 $\text{Consider an oscillator which has a charged particle oscillating about its mean position with a frequency of } 300 \text{ MHz. The wavelength of electromagnetic waves produced by this oscillator would be:}$ $1. \ 1 \text{ m}$ $2. \ 10 \text{ m}$ $3. \ 100 \text{ m}$ $4. \ 1000 \text{ m}$ 1 123 Recommended Questions $1 \text{ m}$, $10 \text{ m}$... 1 Edit Delete
17415 $\text{The magnetic field in a plane electromagnetic wave is given by:}$ $B_y = 2 \times 10^{-7} \sin(\pi \times 10^3 x + 3\pi \times 10^{11} t) \ \text{T}$ $\text{The wavelength is:}$ 1 123 Recommended Questions $\pi \times 10^3 \ \text{m}$, $2 \times 10^{-3} \ \text{m}$... 2 Edit Delete
17414 $\text{In an electromagnetic wave, energy density associated with a magnetic field will be:}$ 1 123 Recommended Questions $\frac{1}{2} LI^2$, $\frac{B^2}{2\mu_0}$... 2 Edit Delete
17413 $\text{The electric and magnetic fields of an electromagnetic wave are:}$ 1 123 Recommended Questions $\text{In phase and parallel to each other}$, $\text{In opposite phases and perpendicular to each other}$... 4 Edit Delete
17412 $\text{The electric and the magnetic field, associated with an electromagnetic wave,}$ $\text{propagating along the } +z\text{-axis, can be represented by:}$ 1 123 Recommended Questions $[E = E_0 \hat{k}, B = B_0 \hat{i}]$, $[E = E_0 \hat{i}, B = B_0 \hat{j}]$... 4 Edit Delete
17411 $\text{Which of the following statements is false regarding the properties of electromagnetic waves?}$ 1 123 Recommended Questions $\text{Both electric and magnetic field vectors attain the maxima and minima at the same place and the same time}$, $\text{The energy in an electromagnetic wave is divided equally between electric and magnetic vectors}$... 3 Edit Delete
17410 $\text{The velocity of electromagnetic wave is parallel to:}$ 1 123 Recommended Questions $\vec{B} \times \vec{E}$, $\vec{E} \times \vec{B}$... 2 Edit Delete
17409 $\text{Consider an electric charge oscillating with a frequency of } 10 \text{ MHz. The radiation emitted will have a wavelength equal to:}$ 1 123 Recommended Questions $20 \text{ m}$, $30 \text{ m}$... 2 Edit Delete
17408 $\text{Which statement is incorrect?}$ $1.\ \text{Speed of light in free space} = \frac{1}{\sqrt{\mu_0\varepsilon_0}}$ $2.\ \text{Speed of light in the medium} = \frac{1}{\sqrt{\mu\varepsilon}}$ $3.\ \frac{E_0}{B_0} = c$ $4.\ \frac{B_0}{E_0} = c$ 1 123 Recommended Questions $1\ (3\%)$, $2\ (4\%)$... 4 Edit Delete
17407 $\text{A plane electromagnetic wave travels in free space along } x\text{-axis. At a particular point in space, the electric field along } y\text{-axis is } 9.3 \ \text{Vm}^{-1}. \text{ The magnetic induction is:}$ 1 123 Recommended Questions $3.1 \times 10^{-8} \ \text{T}$, $3 \times 10^{-5} \ \text{T}$... 1 Edit Delete
17406 $\text{The magnetic field amplitude of an electromagnetic wave is } 2 \times 10^{-7} \text{ T.}$ $\text{Its electric field amplitude if the wave is travelling in free space is:}$ 1 123 Recommended Questions $6 \text{ Vm}^{-1}$, $60 \text{ Vm}^{-1}$... 2 Edit Delete
17405 $\text{The velocity of electromagnetic radiation in a medium of permittivity } \varepsilon_0 \text{ and}$ $\text{permeability } \mu_0 \text{ is given by:}$ 1 123 Recommended Questions $\sqrt{\frac{\varepsilon_0}{\mu_0}}$, $\sqrt{\mu_0 \varepsilon_0}$... 3 Edit Delete
17404 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{Electromagnetic waves are radiated when a charged particle undergoes SHM.}$ $\text{Statement II:}$ \text{Electromagnetic waves propagate energy in the direction of the electric field of the wave.}$ 1 123 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 4 Edit Delete
17403 $\text{Out of the following options which one can be used to produce a propagating electromagnetic wave?}$ 1 123 Recommended Questions $\text{a stationary charge.}$, $\text{a chargeless particle.}$... 3 Edit Delete
17402 $\text{If a source is transmitting an electromagnetic wave of frequency}$ $8.2 \times 10^6 \ \text{Hz, then the wavelength of the electromagnetic wave transmitted from the source will be:}$ 1 123 Recommended Questions $36.6 \ \text{m}$, $40.5 \ \text{m}$... 1 Edit Delete
17401 $\text{Which of the following is not Maxwell's equation?}$ $\left( \rho = \text{volume charge density}, \ J = \text{current density}, \ m = \text{pole strength}, \ V = \text{volume}, \ S = \text{a closed surface, and} \ C = \text{closed loop} \right)$ 1 123 Recommended Questions $\oint_S \vec{E} \cdot d\vec{S} = \frac{1}{\varepsilon_0} \int_V \rho dV$, $\oint_S \vec{B} \cdot d\vec{S} = \frac{m}{\mu_0}$... 4 Edit Delete
17400 $\text{The figure shows a parallel plate capacitor being charged by a battery. If } X \text{ and } Y \text{ are two closed curves then during charging, } \oint \vec{B} \cdot d\vec{l} \text{ is zero along the curve:}$ 1 123 Recommended Questions $X \text{ only}$, $Y \text{ only}$... 4 Edit Delete
17399 $\oint \vec{B} \cdot \vec{dl} = \mu_0 \left( i + \varepsilon_0 \cdot \frac{d(\phi)E}{dt} \right)$ $\text{is a statement of:}$ $1. \text{Faraday's law of induction}$ $2. \text{Modified Ampere's law}$ $3. \text{Gauss's law of electricity}$ $4. \text{Gauss's law of magnetism}$ 1 123 Recommended Questions $\text{Faraday's law of induction}$, $\text{Modified Ampere's law}$... 2 Edit Delete
17398 $\text{Maxwell's equation describes the fundamental laws of:}$ 1 123 Recommended Questions $\text{Electricity only}$, $\text{Magnetism only}$... 4 Edit Delete
17397 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{Displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor does not change}$ $\text{Reason (R):}$ \text{The displacement current arises in the region in which the electric field and hence the electric flux does not change with time.}$ 1 123 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
17396 $\text{Displacement current is the same as:}$ 1 123 Recommended Questions $\text{Conduction current due to the flow of free electrons}$, $\text{Conduction current due to the flow of positive ions}$... 4 Edit Delete
17395 $\text{A parallel plate capacitor consists of two circular plates each of radius } 12 \text{ cm and separated by } 5.0 \text{ mm. The capacitor is being charged by an external source. The charging current is constant and is equal to } 0.15 \text{ A. The rate of change of the potential difference between the plates will be:}$ 1 123 Recommended Questions $1.873 \times 10^7 \text{ V/s}$, $1.873 \times 10^8 \text{ V/s}$... 3 Edit Delete
17394 $\text{A larger parallel plate capacitor, whose plates have an area of } 1 \text{ m}^2, \text{ separated from each other by } 1 \text{ mm, is being charged at a rate of } 25.8 \text{ V/s. If the plates have a dielectric constant } 10, \text{ then the displacement current at this instant is:}$ $1. \ 25 \ \mu\text{A}$ $2. \ 11 \ \mu\text{A}$ $3. \ 2.2 \ \mu\text{A}$ $4. \ 1.1 \ \mu\text{A}$ 1 123 Recommended Questions $25 \ \mu\text{A}$, $11 \ \mu\text{A}$... 3 Edit Delete
17393 $\text{A capacitor is made of two circular plates each of radius 12 cm and separated by 5.0 cm. The capacitor being charged by an external source. The charging current is constant and equal to 0.15 A. The displacement current across the plates is:}$ $1.\ 0$ $2.\ 0.14\ \text{A}$ $3.\ 0.16\ \text{A}$ $4.\ 0.15\ \text{A}$ 1 123 Recommended Questions $0$, $0.14\ \text{A}$... 4 Edit Delete
17392 $\text{A parallel plate capacitor with plate area } A \text{ and separation between the plates } d, \text{ is charged by a source having current } i \text{ at some instant.}$ $\text{Consider a plane surface of area } \frac{A}{2} \text{ parallel to the plates and drawn symmetrically between the plates.}$ $\text{The displacement current through this area is:}$ 1 123 Recommended Questions $i$, $\frac{i}{2}$... 2 Edit Delete
17391 $\text{The charge of a parallel plate capacitor is varying as;} \; q = q_0 \sin \omega t. \; \text{The magnitude of displacement current through the capacitor is:}$ $\text{(the plate Area = } A, \text{ separation of plates = } d)$ 1 123 Recommended Questions $q_0 \cos(\omega t)$, $q_0 \omega \sin \omega t$... 3 Edit Delete
17390 $\text{A variable frequency AC source is connected to a capacitor. Then on increasing the frequency:}$ 1 123 Recommended Questions $\text{Both conduction current and displacement current will increase}$, $\text{Both conduction current and displacement current will decrease}$... 1 Edit Delete
17389 $\text{In an electric circuit, there is a capacitor of reactance } 100 \, \Omega \text{ connected across the source of } 220 \, \text{V. The rms value of displacement current will be:}$ 1 123 Recommended Questions $2.2 \, \text{A}$, $0.22 \, \text{A}$... 1 Edit Delete
17388 $\text{Instantaneous displacement current of } 2.0 \text{ A is set up in the space between two parallel plates of } 1 \ \mu\text{F capacitor. The rate of change in potential difference across the capacitor is:}$ 1 123 Recommended Questions $1.3 \times 10^6 \ \text{V/s}$, $4 \times 10^6 \ \text{V/s}$... 3 Edit Delete
17387 $\text{The S.I. unit of displacement current is:}$ $1.\ \text{Henry}$ $2.\ \text{Coulomb}$ $3.\ \text{Ampere}$ $4.\ \text{Farad}$ 1 123 Recommended Questions $\text{Henry}$, $\text{Coulomb}$... 3 Edit Delete
17386 $\text{A capacitor is having a capacity of } 2 \text{ pF.}$ $\text{The electric potential across the capacitor is changing with a value of } 10^{12} \text{ V/s.}$ $\text{The displacement current is:}$ 1 123 Recommended Questions $2 \text{ A}$, $3 \text{ A}$... 1 Edit Delete
17385 $\text{In AC (alternating current) generator, a coil of wire rotates in a magnetic field.}$ $\text{Which of the following would change the potential difference measured by the voltmeter in the system above?}$ $\text{(a) use more turns of wire in the coil.}$ $\text{(b) use thicker wire.}$ $\text{(c) change the speed of rotation.}$ $\text{Choose the correct option from the given ones:}$ 1 122 Recommended Questions $(c) \text{ only}$, $(a), (b) \text{ and } (c)$... 4 Edit Delete
17384 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{Large-scale transmission and distribution of electric energy over long distances are done by stepping the voltage up by a transformer.} $\text{Reason (R):}$ \text{This cuts down the loss of energy due to eddy currents.}$ 1 122 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
17383 $\text{In a step-up transformer, the turn ratio is } 1 : 2. \text{ A Leclanche cell (emf } 1.5 \text{ V) is connected across the primary coil. What would be the voltage developed in the secondary coil?}$ 1 122 Recommended Questions $3.0 \text{ V}$, $0.75 \text{ V}$... 4 Edit Delete
17382 $\text{A 220 V input is supplied to a transformer. The output circuit draws a current of 2.0 A at 440 V. What is the current drawn by the primary windings of the transformer if the efficiency of the transformer is 80\%?}$ 1 122 Recommended Questions $3.6 \text{ A}$, $2.8 \text{ A}$... 4 Edit Delete
17381 $\text{In a transformer, the number of turns in the primary and secondary coils is } 410 \text{ and } 1230 \text{ respectively. If the current in the primary is } 6 \text{ A, then what is the current in the secondary coil?}$ $1. \ 2 \ \text{A}$ $2. \ 18 \ \text{A}$ $3. \ 12 \ \text{A}$ $4. \ 1 \ \text{A}$ 1 122 Recommended Questions $2 \ \text{A}$, $18 \ \text{A}$... 1 Edit Delete
17380 $\text{A transformer has an efficiency of } 90\% \text{ when working on a } 200 \text{ V and } 3 \text{ kW power supply. If the current in the secondary coil is } 6 \text{ A, the voltage across the secondary coil and the current in the primary coil, respectively, are:}$ 1 122 Recommended Questions $300 \text{ V, } 15 \text{ A}$, $450 \text{ V, } 15 \text{ A}$... 2 Edit Delete
17379 $\text{In the transformer shown in the figure, the ratio of the number of turns of the primary to the secondary is } \frac{N_1}{N_2} = \frac{1}{50}. \text{ If a voltage source of } 10 \text{ V is connected across the primary, then the induced current through the load of } 10 \text{ k}\Omega \text{ in the secondary is:}$ 1 122 Recommended Questions $\frac{1}{20} \text{ A}$, $\text{zero}$... 1 Edit Delete
17378 $\text{When a step-down transformer is connected to a 2400 volt line, the output load receives 80 amps of current.}$ $\text{The ratio of the turns in the primary and secondary coils is } 20 : 1.$ $\text{If transformer efficiency is } 100\%, \text{ then the current flowing in the primary coil will be:}$ 1 122 Recommended Questions $1600 \text{ A}$, $20 \text{ A}$... 3 Edit Delete
17377 $\text{In a step-up transformer, the turn ratio is } 1 : 20. \text{ The resistance of } 100 \, \Omega \text{ connected across the secondary is drawing a current of } 2 \, \text{A. What are the primary voltage and current respectively?}$ 1 122 Recommended Questions $100 \, \text{V}, \, 0.5 \, \text{A}$, $200 \, \text{V}, \, 10 \, \text{A}$... 3 Edit Delete
17376 $\text{A step-down transformer transforms a supply line voltage of } 2200 \text{ volt into } 220 \text{ volt. The primary coil has } 5000 \text{ turns. The efficiency and power transmitted by the transformer are } 90\% \text{ and } 8 \text{ kilowatts respectively. How many turns are there in the secondary one?}$ 1 122 Recommended Questions $5000$, $50$... 3 Edit Delete
17375 $\text{The primary winding of a transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an AC supply of 20 V, 50 Hz. What will be the output of the secondary transformer?}$ 1 122 Recommended Questions $200 \text{ V, 50 Hz}$, $2 \text{ V, 50 Hz}$... 1 Edit Delete
17374 $\text{The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux } \phi \text{ linked with the primary coils is given by } \phi = \phi_0 + 4t, \text{ where } \phi \text{ is in webers, } t \text{ is time in seconds, and } \phi_0 \text{ is a constant, the output voltage across the secondary coil is:}$ 1 122 Recommended Questions $120 \text{ V}$, $220 \text{ V}$... 1 Edit Delete
17373 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{If the terminals of the primary of a transformer are connected across a battery then no emf is induced across the secondary in a steady state.}$ $\text{Reason (R):}$ $\text{The battery provides a steady current, so there is no change in flux linked with the secondary.}$ 1 122 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
17372 $\text{Turn ratio of a step-up transformer is } 1 : 25. \text{ If current in load coil is } 2 \text{ A, then the current in primary coil will be:}$ 1 122 Recommended Questions $25 \text{ A}$, $50 \text{ A}$... 2 Edit Delete
17371 $\text{The core of a transformer is laminated because:}$ 1 122 Recommended Questions $\text{Energy losses due to eddy currents may be minimized}$, $\text{The weight of the transformer may be reduced}$... 1 Edit Delete
17370 $\text{An inductor of } 20 \text{ mH, a capacitor of } 50 \ \mu\text{F, and a resistor of } 40 \, \Omega \text{ are connected in series across a source of emf } V = 10 \sin 340t. \text{ What will be the power loss in the AC circuit?}$ 1 122 Recommended Questions $0.67 \text{ W}$, $0.78 \text{ W}$... 4 Edit Delete
17369 $\text{The power factor of a good choke coil is:}$ 1 122 Recommended Questions $\text{Nearly zero}$, $\text{Exactly zero}$... 1 Edit Delete
17368 $\text{In an } L-R \text{ circuit, the inductive reactance is equal to the resistance } R \text{ of the circuit. An emf of } E = E_0 \cos(\omega t) \text{ is applied to the circuit. The power consumed by the circuit is:}$ 1 122 Recommended Questions $\frac{E_0^2}{\sqrt{2}R}$, $\frac{E_0^2}{4R}$... 2 Edit Delete
17367 $\text{An inductor of } 20 \text{ mH, a capacitor of } 100 \ \mu\text{F, and a resistor of } 50 \, \Omega \text{ are connected in series across a source of emf, } V = 10 \sin(314t). \text{ What is the power loss in this circuit?}$ 1 122 Recommended Questions $0.79 \text{ W}$, $0.43 \text{ W}$... 1 Edit Delete
17366 $\text{What is the instantaneous power of a resistor having resistance } R \text{ across an AC supply of } E = E_0 \sin(\omega t)?$ 1 122 Recommended Questions $\frac{E_0^2}{R} \sin^2 \omega t$, $\frac{E_0^2}{R} \cos^2 \omega t$... 1 Edit Delete
17365 $\text{A resistance } R \text{ draws power } P \text{ when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes } Z \text{ the power drawn will be:}$ 1 122 Recommended Questions $P \left( \frac{R}{Z} \right)^2$, $P \sqrt{\frac{R}{Z}}$... 1 Edit Delete
17364 $\text{If } R \text{ and } L \text{ are resistance and inductance of a choke coil and } f \text{ is the frequency of current through it, then the average power of the choke coil is proportional to:}$ $1. \ R$ $2. \ \frac{1}{f^2}$ $3. \ \frac{1}{L^2}$ $4. \ \text{All of these}$ 1 122 Recommended Questions $R$, $\frac{1}{f^2}$... 4 Edit Delete
17363 $\text{An } LCR \text{ series circuit with } 100 \, \Omega \text{ resistance is connected to an AC source of } 200 \, \text{V} \text{ and an angular frequency of } 300 \, \text{rad/s.}$ $\text{When only the capacitance is removed, the current lags behind the voltage by } 60^\circ.$ $\text{When only the inductance is removed, the current leads the voltage by } 60^\circ.$ $\text{Calculate the power dissipated in the } LCR \text{ circuit.}$ 1 122 Recommended Questions $200 \, \text{W}$, $400 \, \text{W}$... 2 Edit Delete
17362 $\text{An AC voltage source is connected to a series } LCR \text{ circuit. When } L \text{ is removed from the circuit, the phase difference between current and voltage is } \frac{\pi}{3}. \text{ If } C \text{ is instead removed from the circuit, the phase difference is again } \frac{\pi}{3} \text{ between current and voltage. The power factor of the circuit is:}$ 1 122 Recommended Questions $0.5$, $1.0$... 2 Edit Delete
17361 $\text{How much power is dissipated in an } LCR \text{ series circuit connected to an } AC \text{ source of emf } E?$ 1 122 Recommended Questions $\frac{\varepsilon^2 R}{R^2 + \left( L\omega - \frac{1}{C\omega} \right)^2}$, $\frac{\varepsilon^2 \sqrt{R^2 + \left( L\omega - \frac{1}{C\omega} \right)^2}}{R}$... 1 Edit Delete
17360 $\text{The instantaneous values of alternating current and voltages in a circuit are given as,}$ $i = \frac{1}{\sqrt{2}} \sin(100 \pi t) \text{ Ampere}$ $e = \frac{1}{\sqrt{2}} \sin(100 \pi t + \pi/3) \text{ Volt}$ $\text{What is the average power consumed by the circuit in watts?}$ 1 122 Recommended Questions $\frac{\sqrt{3}}{4}$, $\frac{1}{2}$... 3 Edit Delete
17359 $\text{A circuit consists of 3 ohms of resistance and 4 ohms of reactance. The power factor of the circuit is:}$ 1 122 Recommended Questions $0.4$, $0.6$... 2 Edit Delete
17358 $\text{What is the average power dissipated in the AC circuit if current}$ $i = 100 \sin(100t) \text{ A and } V = 100 \sin \left(100t + \frac{\pi}{3}\right) \text{ volts?}$ 1 122 Recommended Questions $2500 \text{ W}$, $250 \text{ W}$... 1 Edit Delete
17357 $\text{In a series } LCR \text{ circuit, the current through the AC source is } 2 \text{ A. If resistor } R \text{ has a resistance of } 10 \, \Omega, \text{ the average power dissipated in the circuit is:}$ 1 122 Recommended Questions $20 \, \text{W}$, $30 \, \text{W}$... 4 Edit Delete
17356 $\text{An inductor of inductance } L \text{ and resistor of resistance } R \text{ are joined in series}$ $\text{and connected by a source of frequency } \omega. \text{ The power dissipated in the circuit is:}$ 1 122 Recommended Questions $\frac{(R^2 + \omega^2 L^2)}{V}$, $\frac{V^2 R}{(R^2 + \omega^2 L^2)}$... 2 Edit Delete
17355 $\text{The potential differences across the resistance, capacitance and inductance are } 80 \text{ V, } 40 \text{ V and } 100 \text{ V respectively in an } LCR \text{ circuit. What is the power factor of this circuit?}$ $1.\ 0.4$ $2.\ 0.5$ $3.\ 0.8$ $4.\ 1.0$ 1 122 Recommended Questions $0.4$, $0.5$... 3 Edit Delete
17354 $\text{The power factor of a series } LCR \text{ circuit in resonance condition is:}$ 1 122 Recommended Questions $\text{zero}$, $\frac{1}{2}$... 4 Edit Delete
17353 $\text{The power factor of the given circuit is:}$ 1 122 Recommended Questions $\frac{1}{2}$, $\frac{1}{\sqrt{2}}$... 2 Edit Delete
17352 $\text{A coil of inductive reactance of } 31 \, \Omega \text{ has a resistance of } 8 \, \Omega. \text{ It is placed in series with a condenser of capacitive reactance } 25 \, \Omega. \text{ The combination is connected to an AC source of } 110 \, \text{V. The power factor of the circuit is:}$ 1 122 Recommended Questions $0.56$, $0.64$... 3 Edit Delete
17351 $\text{A } 100 \, \Omega \text{ resistor is connected to a } 220 \, \text{V, } 50 \, \text{Hz AC supply. The net power consumed over a full cycle is:}$ 1 122 Recommended Questions $484 \, \text{W}$, $848 \, \text{W}$... 1 Edit Delete
17350 $\text{In an AC circuit, the current is given by;} \; i = 5 \sin(100t - \frac{\pi}{2}) \; \text{and the AC potential is} \; V = 200 \sin(100t) \; \text{V. The power consumption is:}$ 1 122 Recommended Questions $20 \; \text{W}$, $40 \; \text{W}$... 4 Edit Delete
17349 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{If the frequency of the applied AC is doubled, then the power factor of a series } R-L \text{ circuit decreases.}$ $\text{Reason (R):}$ \text{Power factor of series } R-L \text{ circuit is given by } \cos \theta = \frac{2R}{\sqrt{R^2 + \omega^2 L^2}}.$ 1 122 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
17348 $\text{A capacitor and a resistor are connected in series across the AC supply. Which of the following phasor diagrams may be correct?}$ 1 122 Recommended Questions $\text{Diagram 1: } I \text{ leads } V \text{ by } \frac{\pi}{2}$, $\text{Diagram 2: } I \text{ and } V \text{ are in phase}$... 2 Edit Delete
17347 $\text{Which of the following plots may represent the reactance of a series of } LC \text{ combinations?}$ 1 122 Recommended Questions $a$, $b$... 4 Edit Delete
17346 $\text{A series } LCR \text{ circuit containing } 5.0 \text{ H inductor, } 80 \, \mu\text{F capacitor and } 40 \, \Omega \text{ resistor is connected to } 230 \, \text{V variable frequency AC source. The angular frequencies of the source at which power transferred to the circuit is half the power at the resonant angular frequency are likely to be:}$ 1 122 Recommended Questions $46 \, \text{rad/s and } 54 \, \text{rad/s}$, $42 \, \text{rad/s and } 58 \, \text{rad/s}$... 1 Edit Delete
17345 $\text{In the network shown below what is the reading of the AC voltmeter?}$ $V = 100 \sqrt{2} \sin \omega t$ $X_C = 50 \, \Omega$ $X_L = 50 \, \Omega$ 1 122 Recommended Questions $\text{Zero}$, $100 \, \text{V}$... 4 Edit Delete
17344 $\text{A capacitor of capacitance } 1 \, \mu\text{F is charged to a potential of } 1 \, \text{V. It is connected in parallel to an inductor of inductance } 10^{-3} \, \text{H. What is the value of the maximum current that will flow in the circuit?}$ 1 122 Recommended Questions $\sqrt{1000} \, \text{mA}$, $1 \, \text{mA}$... 1 Edit Delete
17343 $\text{One 10 V, 60 W bulb is to be connected to 100 V line. The required induction coil has a self-inductance of value:}$ $\left(f = 50 \text{ Hz}\right)$ 1 122 Recommended Questions $0.052 \text{ H}$, $2.42 \text{ H}$... 1 Edit Delete
17342 $\text{If } q \text{ is the capacitor's charge and } i \text{ is the current at time } t, \text{ the voltage } V \text{ will be:}$ 1 122 Recommended Questions $L \frac{di}{dt} + iR - \frac{q}{C} = V$, $L \frac{di}{dt} - iR + \frac{q}{C} = V$... 3 Edit Delete
17341 $\text{In the circuit shown below, the AC source has voltage } V = 20 \cos(\omega t) \text{ volts}$ $\text{with } \omega = 2000 \text{ rad/sec. The amplitude of the current is closest to:}$ 1 122 Recommended Questions $2 \text{ A}$, $3.3 \text{ A}$... 1 Edit Delete
17340 $\text{When an AC source of emf } e = E_0 \sin(100t) \text{ is connected across a circuit, the phase difference between the emf } e \text{ and the current } i \text{ in the circuit is observed to be } \frac{\pi}{4} \text{ as shown in the diagram. If the circuit consists only of } RC \text{ or } LC \text{ in series, then what is the relationship between the two elements?}$ 1 122 Recommended Questions $R = 1 \text{ k}\Omega, C = 10 \mu\text{F}$, $R = 1 \text{ k}\Omega, C = 1 \mu\text{F}$... 1 Edit Delete
17339 $\text{In a series } LCR \text{ circuit, which one of the following curves represents the variation of impedance } (Z) \text{ with frequency } (f)?$ 1 122 Recommended Questions $\text{Option 1: Decreasing curve}$, $\text{Option 2: Bell-shaped curve}$... 3 Edit Delete
17338 $\text{An inductor } (L) \text{ and resistance } (R) \text{ are connected in series with an AC source.}$ $\text{The phase difference between voltage } (V) \text{ and current } (i) \text{ is } 45^\circ. \text{ If the phase difference between } V \text{ and } i \text{ remains the same, then the capacitive reactance and impedance of the } LCR \text{ circuit will be:}$ 1 122 Recommended Questions $2R, R\sqrt{2}$, $R, R\sqrt{2}$... 1 Edit Delete
17337 $\text{The figure shows the variation of } R, X_L, \text{ and } X_C \text{ with frequency } f \text{ in a series of } L, C, \text{ and } R \text{ circuits.}$ $\text{For which frequency point is the circuit inductive?}$ 1 122 Recommended Questions $A$, $B$... 3 Edit Delete
17336 $\text{A bulb is rated at } 100 \text{ V, } 100 \text{ W, and is treated as a resistor. The inductance of an inductor (choke coil) that should be connected in series with the bulb to operate the bulb at its rated power with the help of an AC source of } 200 \text{ V and } 50 \text{ Hz is:}$ 1 122 Recommended Questions $\frac{\pi}{\sqrt{3}} \text{ H}$, $100 \text{ H}$... 4 Edit Delete
17335 $\text{A coil has a resistance of 30 ohm and inductive reactance of 20 ohm at a 50 Hz frequency. If an } AC \text{ source of 200 volts, 100 Hz is connected across the coil, the current in the coil will be:}$ 1 122 Recommended Questions $2.0 \text{ A}$, $4.0 \text{ A}$... 2 Edit Delete
17334 $\text{A constant voltage at different frequencies is applied across a capacitance } C$ $\text{as shown in the figure.}$ $\text{Which of the following graphs accurately illustrates how current varies with frequency?}$ 1 122 Recommended Questions $\text{Graph 1: Increasing curve of } I \text{ vs. } \omega$, $\text{Graph 2: Linear increase of } I \text{ vs. } \omega$... 2 Edit Delete
17333 $\text{The AC source in the circuit shown in the figure produces a voltage}$ $V = 20 \cos(2000t) \text{ volts. Neglecting source resistance, the voltmeter and ammeter readings will be (approximately):}$ 1 122 Recommended Questions $4 \text{ V, } 2.0 \text{ A}$, $0 \text{ V, } 2 \text{ A}$... 3 Edit Delete
17332 $\text{The diagram shows a capacitor } C \text{ and a resistor } R \text{ connected in series to an AC source. } V_1 \text{ and } V_2 \text{ are voltmeters and } A \text{ is an ammeter.}$ $\text{Consider now the following statements}$ $\text{I. Readings in } A \text{ and } V_2 \text{ are always in phase}$ $\text{II. Reading in } V_1 \text{ is ahead in phase with reading in } V_2$ $\text{III. Readings in } A \text{ and } V_1 \text{ are always in phase}$ $\text{Which of these statements is/are correct?}$ 1 122 Recommended Questions $\text{I only}$, $\text{II only}$... 1 Edit Delete
17331 $\text{In a circuit, } L, C \text{ and } R \text{ are connected in series with an alternating voltage source of frequency } f. \text{ The current leads the voltage by } 45^\circ. \text{ The value of } C \text{ will be:}$ 1 122 Recommended Questions $\frac{1}{2\pi f \left(2\pi f L + R\right)}$, $\frac{1}{\pi f \left(2\pi f L + R\right)}$... 1 Edit Delete
17330 $\text{The circuit is in a steady state when the key is at position 1.}$ $\text{If the switch is changed from position 1 to position 2, then the steady current in the circuit will be:}$ 1 122 Recommended Questions $\frac{E_0}{R}$, $\frac{E_0}{3R}$... 1 Edit Delete
17329 $\text{A 220 V, 50 Hz AC source is connected to an inductance of 0.2 H and a resistance of 20 ohms in series. How much current flows across the circuit?}$ 1 122 Recommended Questions $10 \text{ A}$, $5 \text{ A}$... 4 Edit Delete
17328 $\text{In a box } Z \text{ of unknown elements } (L \text{ or } R \text{ or any other combination}), \text{ an ac voltage } E = E_0 \sin(\omega t + \phi) \text{ is applied and the current in the circuit is found to be } I = I_0 \sin \left( \omega t + \phi + \frac{\pi}{4} \right). \text{ The unknown elements in the box could be:}$ 1 122 Recommended Questions $\text{Only the capacitor}$, $\text{Inductor and resistor both}$... 3 Edit Delete
17327 $\text{An ac source of angular frequency } \omega \text{ is fed across a resistor } r \text{ and a capacitor } C \text{ in series. } I \text{ is the current in the circuit. If the frequency of the source is changed to } \frac{\omega}{3} \text{ (but maintaining the same voltage), the current in the circuit is found to be halved. Calculate the ratio of reactance to resistance at the original frequency } \omega.$ 1 122 Recommended Questions $\sqrt{\frac{3}{5}}$, $\sqrt{\frac{2}{5}}$... 1 Edit Delete
17326 $\text{An alternating voltage source is connected to a series } RC \text{ circuit. Consider two situations:}$ $1. \text{When the capacitor is air-filled.}$ $2. \text{When the capacitor is mica filled.}$ $\text{If the current through the resistor is } I \text{ and the voltage across the capacitor is } V, \text{ then:}$ 1 122 Recommended Questions $V_a \leq V_b$, $V_a > V_b$... 2 Edit Delete
17325 $\text{When does the voltage in a series } LCR \text{ circuit lead the current? (Given that } \omega_0 = \text{ resonant angular frequency})$ 1 122 Recommended Questions $\omega < \omega_0$, $\omega = \omega_0$... 3 Edit Delete
17324 $\text{In the circuit shown, the value of RMS current is 11 A. The potential difference across the inductor is:}$ 1 122 Recommended Questions $220 \text{ V}$, $\text{zero}$... 4 Edit Delete
17323 $\text{A coil of self-inductance } L \text{ is connected in series with a bulb } B \text{ and an AC source. The brightness of the bulb decreases when:}$ 1 122 Recommended Questions $\text{Frequency of the AC source is decreased}$, $\text{The number of turns in the coil is reduced}$... 4 Edit Delete
17322 $\text{In a series } LC \text{ circuit, if } L = 10^{-3} \text{ H and } C = 3 \times 10^{-7} \text{ F is connected to a } (100 \text{ V, } 50 \text{ Hz}) \text{ AC source, the impedance of the circuit is:}$ 1 122 Recommended Questions $\frac{10^5}{3\pi} - 10\pi$, $0.1\pi - 3 \times 10^{-5}\pi$... 3 Edit Delete
17321 $\text{In an } LCR \text{ series AC circuit, the voltage across each of the components } L, C \text{ and } R \text{ is } 50 \text{ V. The voltage across the } LR \text{ combination will be:}$ 1 122 Recommended Questions $50 \text{ V}$, $50\sqrt{2} \text{ V}$... 2 Edit Delete
17320 $\text{In a series } LCR \text{ circuit, the phase difference between voltage across } L \text{ and voltage across } C \text{ is equal to:}$ 1 122 Recommended Questions $\text{Zero}$, $\pi$... 2 Edit Delete
17319 $\text{In an } LCR \text{ circuit having } L = 8.0 \text{ H}, C = 0.5 \ \mu\text{F and } R = 100 \ \Omega \text{ in series, what is the resonance frequency?}$ $1. \ 600 \ \text{radian/sec}$ $2. \ 600 \ \text{Hz}$ $3. \ 500 \ \text{radian/sec}$ $4. \ 500 \ \text{Hz}$ 1 122 Recommended Questions $600 \ \text{radian/sec}$, $600 \ \text{Hz}$... 3 Edit Delete
17318 $\text{The voltage reading on the voltmeter } V \text{ in the circuit shown below will be:}$ $\begin{array}{c} \text{(Circuit Diagram)} \\ 150 \, \text{V} \, \quad 150 \, \text{V} \\ 300 \, \text{V} \, 50 \, \text{Hz} \end{array}$ 1 122 Recommended Questions $\text{zero}$, $100 \, \text{V}$... 4 Edit Delete
17317 $\text{In a series } LCR \text{ circuit connected across } (220 \text{ V, } 50 \text{ Hz) ac supply. If the inductive reactance of the circuit is } 79.6 \, \Omega. \text{ If the power delivered in the circuit is maximum, then the capacitance of the circuit is:}$ $1. \ 40 \, \mu F$ $2. \ 30 \, \mu F$ $3. \ 20 \, \mu F$ $4. \ 50 \, \mu F$ 1 122 Recommended Questions $40 \, \mu F$, $30 \, \mu F$... 1 Edit Delete
17316 $A \ 50 \ \text{Hz} \ \text{AC source of} \ 20 \ \text{volts is connected across} \ R \ \text{and} \ C \ \text{as shown in the figure below. If the voltage across} \ R \ \text{is} \ 12 \ \text{volts, then the voltage across} \ C \ \text{will be:}$ 1 122 Recommended Questions $8 \ \text{V}$, $16 \ \text{V}$... 2 Edit Delete
17315 $\text{An } AC \text{ voltage is applied to a resistance } R \text{ and an inductor } L \text{ in series. If } R \text{ and the inductive reactance are both equal to } 3 \, \Omega, \text{ then the phase difference between the applied voltage and the current in the circuit will be:}$ 1 122 Recommended Questions $\pi/4$, $\pi/2$... 1 Edit Delete
17314 $\text{For a series } RLC \text{ circuit, } R = X_L = 2X_C. \text{ The impedance of the circuit and phase difference between } V \text{ and } i \text{ will be:}$ 1 122 Recommended Questions $\frac{\sqrt{5}R}{2}, \tan^{-1}(2)$, $\frac{\sqrt{5}R}{2}, \tan^{-1}\left(\frac{1}{2}\right)$... 2 Edit Delete
17313 $\text{A lamp is connected in series with a capacitor. AC and DC sources are connected to the circuit one by one, then mark the correct statement/s.}$ 1 122 Recommended Questions $\text{When the DC source is connected to the capacitor, the lamp will not glow in a steady-state condition.}$, $\text{When the AC source is connected to the capacitor and the capacitance of the capacitor is reduced, the lamp will glow less brightly.}$... 4 Edit Delete
17312 $\text{What is the value of inductance } L \text{ for which the current is a maximum in a series } LCR \text{ circuit with } C = 10 \, \mu\text{F and } \omega = 1000 \, \text{s}^{-1}?$ 1 122 Recommended Questions $10 \, \text{mH}$, $100 \, \text{mH}$... 2 Edit Delete
17311 $\text{An AC source of variable frequency } f \text{ is connected to an } LCR \text{ series circuit.}$ $\text{Which of the following graphs represents the variation of the current } I \text{ in the circuit with frequency } f?$ 1 122 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 4 Edit Delete
17310 $\text{Alternating voltage } V = V_0 \sin \omega t \text{ is applied to a circuit containing some elements in series.}$ $\text{Match the values of current in Column I with the possible elements connected in the circuit in Column II.}$ $\begin{array}{|c|c|} \hline \text{Column-I} & \text{Column-II} \\ \hline (A) \ I = I_0 \sin \omega t & (P) \ \text{only inductor circuit} \\ (B) \ I = -I_0 \cos \omega t & (Q) \ \text{may be } C-R \text{ circuit} \\ (C) \ I = I_0 \sin \left( \omega t + \frac{\pi}{4} \right) & (R) \ \text{may be } L-R \text{ circuit} \\ (D) \ I = I_0 \sin \left( \omega t - \frac{\pi}{4} \right) & (S) \ \text{only resistance circuit} \\ \hline \end{array}$ 1 122 Recommended Questions $A \rightarrow S, \ B \rightarrow Q, \ C \rightarrow P, \ D \rightarrow R$, $A \rightarrow P, \ B \rightarrow S, \ C \rightarrow R, \ D \rightarrow Q$... 3 Edit Delete
17309 $\text{For a } LCR \text{ series circuit with an AC source of angular frequency } \omega:$ $1. \text{ circuit will be capacitive if } \omega > \frac{1}{\sqrt{LC}}$ $2. \text{ circuit will be inductive if } \omega = \frac{1}{\sqrt{LC}}$ $3. \text{ power factor of circuit will be unity if capacitive reactance equals inductive reactance}$ $4. \text{ current will be leading voltage if } \omega > \frac{1}{\sqrt{LC}}$ 1 122 Recommended Questions $\text{circuit will be capacitive if } \omega > \frac{1}{\sqrt{LC}}$, $\text{circuit will be inductive if } \omega = \frac{1}{\sqrt{LC}}$... 3 Edit Delete
17308 $\text{A 44 mH inductor is connected to a 220 V, 50 Hz AC supply. The RMS value of the current in the circuit is:}$ 1 122 Recommended Questions $1.0 \text{ A}$, $15 \text{ A}$... 3 Edit Delete
17307 $\text{A sinusoidal supply of frequency } 10 \text{ Hz and rms voltage of } 12 \text{ V is connected to a } 2.1 \, \mu\text{F capacitor. What is the rms value of current?}$ 1 122 Recommended Questions $5.5 \, \text{mA}$, $20 \, \text{mA}$... 4 Edit Delete
17306 $\text{A resistance of } 300 \, \Omega \text{ and an inductance of } \frac{1}{\pi} \, \text{henry are connected in series to an AC voltage of 20 volts and a 200 Hz frequency. The phase angle between the voltage and current will be:}$ 1 122 Recommended Questions $\tan^{-1} \frac{4}{3}$, $\tan^{-1} \frac{3}{4}$... 1 Edit Delete
17305 $\text{In an ac circuit, a resistance of } R \text{ ohm is connected in series with an inductance } L. \text{ If the phase angle between voltage and current is } 45^\circ, \text{ the value of inductive reactance will be:}$ 1 122 Recommended Questions $\frac{R}{4}$, $\frac{R}{2}$... 3 Edit Delete
17304 $\text{Calculate the } Q\text{-value of a series } LCR \text{ circuit with } L = 2.0 \text{ H}, C = 32 \mu\text{F and } R = 10 \, \Omega.$ 1 122 Recommended Questions $35$, $20$... 4 Edit Delete
17303 $\text{It is found that the current through the } LCR \text{ series circuit is at its maximum.}$ $\text{If } V_R, V_C \text{ and } V_L \text{ are potential differences across resistance, capacitor, and}$ $\text{inductor respectively, then which of the following is correct?}$ 1 122 Recommended Questions $V_R = V_L > V_C$, $V_R \neq V_L = V_C$... 2 Edit Delete
17302 $\text{In a series } LCR \text{ circuit, resistance } R = 10 \, \Omega \text{ and the impedance } Z = 20 \, \Omega. \text{ The phase difference between the current and the voltage will be:}$ 1 122 Recommended Questions $30^\circ$, $45^\circ$... 3 Edit Delete
17301 $\text{An ideal resistance } R, \text{ ideal inductance } L, \text{ ideal capacitance } C, \text{ and AC voltmeters } V_1, V_2, V_3 \text{ and } V_4 \text{ are connected to an AC source as shown. At resonance:}$ 1 122 Recommended Questions $\text{reading in } V_3 = \text{reading in } V_1$, $\text{reading in } V_1 = \text{reading in } V_2$... 4 Edit Delete
17300 $L$, $C$ \text{ and } $R$ \text{ represent physical quantities inductance, capacitance and resistance respectively. The combination representing the dimension of frequency will be:}$ $1. \ LC$ $2. \ (LC)^{-\frac{1}{2}}$ $3. \ \left(\frac{L}{C}\right)^{-\frac{1}{2}}$ $4. \ \frac{C}{L}$ 1 122 Recommended Questions $LC$, $(LC)^{-\frac{1}{2}}$... 2 Edit Delete
17299 $\text{Choose the correct statements regarding a series LCR circuit.}$ $1.\ \text{The voltage across the capacitor lags behind the current.}$ $2.\ \text{The voltage across the inductor leads the current.}$ $3.\ \text{The voltage across the resistance } R \text{ is in phase with the current.}$ $4.\ \text{All of the above.}$ 1 122 Recommended Questions $\text{The voltage across the capacitor lags behind the current.}$, $\text{The voltage across the inductor leads the current.}$... 4 Edit Delete
17298 $\text{In the circuit shown in the figure, neglecting source resistance, the voltmeter and ammeter reading respectively will be:}$ 1 122 Recommended Questions $0 \text{ V, } 3 \text{ A}$, $150 \text{ V, } 3 \text{ A}$... 4 Edit Delete
17297 $\text{A transistor-oscillator using a resonant circuit with an inductance } \mathcal{L} \text{ (of negligible resistance) and a capacitance } \mathcal{C} \text{ has a frequency } f. \text{ If } \mathcal{L} \text{ is doubled and } \mathcal{C} \text{ is changed to } 4\mathcal{C}, \text{ the frequency will be:}$ 1 122 Recommended Questions $\frac{f}{4}$, $8f$... 3 Edit Delete
17296 $\text{A series AC circuit has a resistance of } 4 \, \Omega \text{ and an inductor of reactance } 3 \, \Omega. \text{ The impedance of the circuit is } Z_1. \text{ Now when a capacitor of reactance } 6 \, \Omega \text{ is connected in series with the above combination, the impedance becomes } Z_2. \text{ Then } \frac{Z_1}{Z_2} \text{ will be:}$ 1 122 Recommended Questions $1 : 1$, $5 : 4$... 1 Edit Delete
17295 $\text{In an } LCR \text{ circuit, the potential difference between the terminals of the inductance is } 60 \text{ V, between the terminals of the capacitor is } 30 \text{ V and that between the terminals of the resistance is } 40 \text{ V. The supply voltage will be equal to:}$ 1 122 Recommended Questions $50 \text{ V}$, $70 \text{ V}$... 1 Edit Delete
17294 $\text{In an } LCR \text{ series network, } V_L = 40 \text{ V}, V_C = 20 \text{ V} \text{ and } V_R = 15 \text{ V. The supply voltage will be:}$ 1 122 Recommended Questions $25 \text{ V}$, $75 \text{ V}$... 1 Edit Delete
17293 $\text{In the circuit shown below, what will be the readings of the voltmeter and ammeter?}$ 1 122 Recommended Questions $800 \text{ V, } 2 \text{ A}$, $300 \text{ V, } 2 \text{ A}$... 3 Edit Delete
17292 $\text{An alternating current of frequency } f \text{ is flowing in a circuit containing a resistance } R \text{ and a choke } L \text{ in series. The impedance of this circuit will be:}$ 1 122 Recommended Questions $R + 2\pi f L$, $\sqrt{R^2 + 4\pi^2 f^2 L^2}$... 2 Edit Delete
17291 $\text{An alternating voltage (in volts) given by } V = 200\sqrt{2} \sin 100t \text{ is connected to a } 1 \, \mu F \text{ capacitor through an AC ammeter. The reading of the ammeter will be:}$ 1 122 Recommended Questions $10 \, \text{mA}$, $20 \, \text{mA}$... 2 Edit Delete
17290 $\text{In a series } RLC \text{ circuit, potential differences across } R, L \text{ and } C \text{ are } 30 \text{ V}, 60 \text{ V and } 100 \text{ V respectively, as shown in the figure. The emf of the source (in volts) will be:}$ 1 122 Recommended Questions $190$, $70$... 1 Edit Delete
17289 $\text{A resistance of } 20 \, \Omega \text{ is connected to a source of an alternating potential, } V = 220 \sin(100 \pi t).$ $\text{The time taken by the current to change from its peak value to its rms value will be:}$ 1 122 Recommended Questions $0.2 \, \text{sec}$, $0.25 \, \text{sec}$... 4 Edit Delete
17288 $\text{Match List I (expression for current) with List II (rms value of current) and select the correct answer.}$ $\text{List I}$ \begin{array}{ll} (a) & I = I_0 \sin \omega t \cos \omega t \\ (b) & I = I_0 \sin \left( \omega t + \frac{\pi}{3} \right) \\ (c) & I_0 (\sin \omega t + \cos \omega t) \\ (d) & I = I_0 (e) \end{array} \quad \text{List II} \begin{array}{ll} (i) & I_0 \\ (ii) & \frac{I_0}{\sqrt{2}} \\ (iii) & I_0 e \\ (iv) & \frac{I_0}{2\sqrt{2}} \end{array}$ 1 122 Recommended Questions $(iv) \ (ii) \ (i) \ (iii)$, $(iv) \ (i) \ (iii) \ (i)$... 1 Edit Delete
17287 $\text{In an AC circuit } I = 100 \sin(200\pi t).$ $\text{The time required for the current to reach its peak value will be:}$ 1 122 Recommended Questions $\frac{1}{100} \text{ sec}$, $\frac{1}{200} \text{ sec}$... 4 Edit Delete
17286 $\text{The output current versus time curve of a rectifier is shown in the figure. The average value of the output current in this case will be:}$ 1 122 Recommended Questions $0$, $\frac{I_0}{2}$... 3 Edit Delete
17285 $\text{Voltage and current in an AC circuit are given by } V = 5 \sin \left( 100 \pi t - \frac{\pi}{6} \right) \text{ V}$ $\text{and } I = 4 \sin \left( 100 \pi t + \frac{\pi}{6} \right) \text{ A.}$ $\text{Hence:}$ 1 122 Recommended Questions $\text{The voltage leads the current by } 30^\circ.$, $\text{The current leads the voltage by } 30^\circ.$... 3 Edit Delete
17284 $\text{The rms value of the potential difference } V \text{ shown in the figure is:}$ 1 122 Recommended Questions $\frac{V_0}{\sqrt{3}}$, $V_0$... 3 Edit Delete
17283 $\text{The time required for a } 50 \text{ Hz sinusoidal alternating current to change its value from zero to the rms value will be:}$ 1 122 Recommended Questions $1.5 \times 10^{-2} \text{ s}$, $2.5 \times 10^{-3} \text{ s}$... 2 Edit Delete
17282 $\text{When an alternating voltage is given as;} \ E = (6 \sin \omega t - 2 \cos \omega t) \ \text{V}, \ \text{what is its RMS value?}$ 1 122 Recommended Questions $4\sqrt{2} \ \text{V}$, $2\sqrt{5} \ \text{V}$... 2 Edit Delete
17281 $\text{The variation of the instantaneous current } (I) \text{ and the instantaneous emf } (E)$ $\text{in a circuit are shown in the figure. Which of the following statements is correct?}$ 1 122 Recommended Questions $\text{The voltage lags behind the current by } \frac{\pi}{2}.$, $\text{The voltage leads the current by } \frac{\pi}{2}.$... 2 Edit Delete
17280 $\text{The peak value of an alternating emf;} \ E = E_0 \sin \omega t \ \text{is} \ 10 \ \text{V and its frequency is} \ 50 \ \text{Hz. At a time} \ t = \frac{1}{600} \ \text{s, the instantaneous value of the emf will be:}$ $1. \ 1 \ \text{V}$ $2. \ 5\sqrt{3} \ \text{V}$ $3. \ 5 \ \text{V}$ $4. \ 10 \ \text{V}$ 1 122 Recommended Questions $1 \ \text{V}$, $5\sqrt{3} \ \text{V}$... 3 Edit Delete
17279 $\text{An alternating current is given as } i = i_1 \cos \omega t - i_2 \sin \omega t. \text{ The value of rms current is given by:}$ 1 122 Recommended Questions $\frac{1}{\sqrt{2}} (i_1 + i_2)$, $\frac{1}{\sqrt{2}} (i_1 + i_2)^2$... 3 Edit Delete
17278 $\text{A generator produces a voltage that is given by } V = 240 \sin(120t), \text{ where } t \text{ is in seconds. The frequency and rms voltage are:}$ 1 122 Recommended Questions $60 \text{ Hz and } 240 \text{ V}$, $19 \text{ Hz and } 120 \text{ V}$... 3 Edit Delete
17277 $\text{In a heating arrangement, an alternating current having a peak value of } 28 \text{ A is used.}$ $\text{To produce the same heat energy, if direct current is used to produce the same amount of heat, then its magnitude will be:}$ 1 122 Recommended Questions $\text{about } 14 \text{ A}$, $\text{about } 28 \text{ A}$... 3 Edit Delete
17276 $\text{Alternating current cannot be measured by a DC ammeter because:}$ 1 122 Recommended Questions $\text{AC cannot pass through DC Ammeter.}$, $\text{AC changes direction.}$... 3 Edit Delete
17275 $\text{An AC ammeter is used to measure the current in a circuit. When a given direct current passes through the circuit, the AC ammeter reads } 6 \text{ A.}$ $\text{When another alternating current passes through the circuit, the AC ammeter reads } 8 \text{ A.}$ $\text{Then the reading of this ammeter if DC and AC flow through the circuit simultaneously is:}$ 1 122 Recommended Questions $10\sqrt{2} \text{ A}$, $14 \text{ A}$... 3 Edit Delete
17274 $\text{In the diagram, two sinusoidal voltages of the same frequency are shown.}$ $\text{What is the frequency and the phase relationship between the voltages?}$ 1 122 Recommended Questions $0.4 \quad -\pi/4$, $2.5 \quad -\pi/2$... 2 Edit Delete
17273 $\text{The variation of EMF with time for four types of generators is shown in the figures. Which amongst them can be called AC voltage?}$ 1 122 Recommended Questions $(a) \text{ and } (d)$, $(a), (b), (c), \text{ and } (d)$... 2 Edit Delete
17046 $\text{In which of the following devices, the eddy current effect is not used?}$ 1 121 Recommended Questions $\text{Electric heater}$, $\text{Induction furnace}$... 1 Edit Delete
17045 $\text{Consider the following statements:}$ $\text{I: A small magnet takes a longer time in falling into a hollow metallic tube without touching the wall.}$ $\text{II: There is an opposition to motion due to the production of eddy currents in a metallic tube.}$ $\text{Choose the correct option for the above statements:}$ 1 121 Recommended Questions $\text{Both I and II are True and II is the correct explanation for I.}$, $\text{Both I and II are True and II is not the correct explanation for I.}$... 1 Edit Delete
17044 $\text{Eddy currents are induced when:}$ 1 121 Recommended Questions $\text{A metal block is kept in a changing magnetic field.}$, $\text{A metal block is kept in a uniform magnetic field.}$... 1 Edit Delete
17043 $\text{The slotting processes in a metallic sheet results in:}$ 1 121 Recommended Questions $\text{The increase of the resistance in the path for circulation of current.}$, $\text{Decrease in the strength of eddy current.}$... 4 Edit Delete
17042 $\text{Eddy currents are used in:}$ $1.\ \text{Induction furnace}$ $2.\ \text{Electromagnetic brakes}$ $3.\ \text{Speedometers}$ $4.\ \text{All of these}$ 1 121 Recommended Questions $\text{Induction furnace}$, $\text{Electromagnetic brakes}$... 4 Edit Delete
17041 $\text{An inductor is connected to a direct voltage source through a switch. Then:}$ 1 121 Recommended Questions $\text{a very large emf is induced in inductor when the switch is closed.}$, $\text{a large emf is induced when the switch is opened.}$... 2 Edit Delete
17040 $\text{Switch } S \text{ of the circuit shown in the figure is closed at } t = 0. \text{ If } e \text{ denotes the induced emf in } L \text{ and } i \text{ denotes the current flowing through the circuit at time } t, \text{ then which of the following graphs is correct?}$ 1 121 Recommended Questions $\text{Graph of } e \text{ vs. } t \text{ showing exponential increase}$, $\text{Graph of } i \text{ vs. } t \text{ showing constant current}$... 3 Edit Delete
17039 $\text{The resistance in the following circuit is increased at a particular instant. At this instant the value of resistance is } 10 \, \Omega. \text{ The current in the circuit will be:}$ 1 121 Recommended Questions $i = 0.5 \, \text{A}$, $i > 0.5 \, \text{A}$... 2 Edit Delete
17038 $\text{A series combination of inductance } (L) \text{ and resistance } (R) \text{ is connected to a battery of emf } E. \text{ The final value of current depends on:}$ 1 121 Recommended Questions $L \text{ and } R$, $E \text{ and } R$... 2 Edit Delete
17037 $\text{In the circuit diagram shown in figure, } R = 10 \, \Omega, L = 5 \, \text{H}, E = 20 \, \text{V} \text{ and } i = 2 \, \text{A.}$ $\text{This current is decreasing at a rate of } 1.0 \, \text{A/s. } V_{ab} \text{ at this instant will be:}$ 1 121 Recommended Questions $40 \, \text{V}$, $35 \, \text{V}$... 2 Edit Delete
17036 $\text{The network shown in figure is a part of a complete circuit. If at a certain instant, the current } i \text{ is } 10 \text{ A and is increasing at the rate of } 4 \times 10^3 \text{ A/sec, then } V_A - V_B \text{ is:}$ 1 121 Recommended Questions $6 \text{ V}$, $-6 \text{ V}$... 1 Edit Delete
17035 $\text{The figure shows three circuits with identical batteries, inductors, and resistors. Rank the circuits according to the current, in descending order, through the battery } (i) \text{ just after the switch is closed and } (ii) \text{ a long time later:}$ 1 121 Recommended Questions $(i) \ i_2 > i_3 > i_1 \ (i_1 = 0) \ \ (ii) \ i_2 > i_3 > i_1$, $(i) \ i_2 < i_3 < i_1 \ (i_1 \neq 0) \ \ (ii) \ i_2 < i_3 < i_1$... 1 Edit Delete
17034 $\text{When the current in the portion of the circuit shown in the figure is } 2 \text{ A and increases at the rate of } 1 \text{ A/s, the measured potential difference } V_{ab} = 8 \text{ V.}$ $\text{However, when the current is } 2 \text{ A and decreases at the rate of } 1 \text{ A/s, the measured potential difference } V_{ab} = 4 \text{ V. The value of } R \text{ and } L \text{ is:}$ 1 121 Recommended Questions $3 \, \Omega \text{ and } 2 \, \text{H respectively}$, $3 \, \Omega \text{ and } 3 \, \text{H respectively}$... 1 Edit Delete
17033 $\text{A solenoid of inductance } L \text{ and resistance } R \text{ is connected to a battery of emf } E. \text{ The maximum value of magnetic energy stored in the inductor is:}$ 1 121 Recommended Questions $\frac{E^2}{2R}$, $\frac{E^2L}{2R^2}$... 2 Edit Delete
17032 $\text{In the figure magnetic energy stored in the coil is:}$ $\begin{array}{c} \text{2 H} \\ \end{array}$ $\begin{array}{c} 10 \, \text{V} \\ \end{array}$ $\begin{array}{c} 2 \, \Omega \\ \end{array}$ 1 121 Recommended Questions $\text{Zero}$, $\text{Infinite}$... 3 Edit Delete
17031 $\text{A long solenoid of diameter } 0.1 \text{ m has } 2 \times 10^4 \text{ turns per meter. At the centre of the solenoid, a coil of } 100 \text{ turns and a radius of } 0.01 \text{ m is placed with its axis coinciding with the solenoid's axis. The current in the solenoid reduces at a constant rate from } 0 \text{ A to } 4 \text{ A in } 0.05 \text{ s. If the resistance of the coil is } 10\pi^2 \, \Omega, \text{ the total charge flowing through the coil during this time is:}$ 1 121 Recommended Questions $32\pi \, \mu\text{C}$, $16 \, \mu\text{C}$... 3 Edit Delete
17030 $\text{A straight solenoid has 50 turns per cm in primary coil and 200 turns in the secondary coil. The area of cross-section of the solenoid is 4 cm}^2. \text{ Calculate the mutual inductance.}$ 1 121 Recommended Questions $5.0 \text{ H}$, $5.0 \times 10^{-4} \text{ H}$... 2 Edit Delete
17029 $\text{A small square loop of wire of side } l \text{ is placed inside a large square loop of side } L \ (L \gg l).$ $\text{If the loops are coplanar and their centres coincide, the mutual inductance of the system is directly proportional to:}$ 1 121 Recommended Questions $\frac{L}{l}$, $\frac{l}{L}$... 4 Edit Delete
17028 $\text{Two coaxial coils are very close to each other and their mutual inductance is } 5 \text{ mH.}$ $\text{If a current } 50 \sin(500t) \text{ is passed in one of the coils, then the peak value}$ $\text{of induced emf in the secondary coil will be:}$ 1 121 Recommended Questions $5000 \text{ V}$, $500 \text{ V}$... 4 Edit Delete
17027 $\text{Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be:}$ 1 121 Recommended Questions $\text{maximum in the situation (A).}$, $\text{maximum in the situation (B).}$... 1 Edit Delete
17026 $\text{Two coils have a mutual inductance of } 5 \text{ mH.}$ $\text{The current changes in the first coil according to the equation } I = I_0 \cos \omega t,$ $\text{where } I_0 = 10 \text{ A and } \omega = 100\pi \text{ rad/s.}$ $\text{The maximum value of emf induced in the second coil is:}$ 1 121 Recommended Questions $5\pi \text{ V}$, $2\pi \text{ V}$... 1 Edit Delete
17025 $\text{Two coils of 10 turns each are arranged such that the mutual inductance between them is 150 mH. The magnetic flux linked through one coil when 2 amperes current will flow in another coil, will be:}$ $1. \ 1 \times 10^{-3} \ \text{Wb}$ $2. \ 10 \times 10^{-3} \ \text{Wb}$ $3. \ 20 \times 10^{-3} \ \text{Wb}$ $4. \ 30 \times 10^{-3} \ \text{Wb}$ 1 121 Recommended Questions $1 \times 10^{-3} \ \text{Wb}$, $10 \times 10^{-3} \ \text{Wb}$... 4 Edit Delete
17024 $\text{The coefficient of mutual inductance between two coils depends upon:}$ 1 121 Recommended Questions $\text{medium between coils}$, $\text{separation between coils}$... 4 Edit Delete
17023 $\text{With the decrease of current in the primary coil from } 2 \text{ A to zero in } 0.01 \text{ s, the emf generated in the secondary coil is } 1000 \text{ V. The mutual inductance of the two coils is:}$ 1 121 Recommended Questions $1.25 \text{ H}$, $2.50 \text{ H}$... 3 Edit Delete
17022 $\text{A pair of adjacent coils has a mutual inductance of } 1.5 \text{ H. If the current in one coil changes from } 0 \text{ to } 20 \text{ A in } 0.5 \text{ s, what is the change of flux linkage with the other coil?}$ 1 121 Recommended Questions $35 \text{ Wb}$, $25 \text{ Wb}$... 3 Edit Delete
17021 $\text{Two circuits have coefficient of mutual induction of } 0.09 \text{ henry.}$ $\text{Average emf induced in the secondary by a change of current from } 0 \text{ to } 20 \text{ ampere in } 0.006 \text{ second in the primary will be:}$ 1 121 Recommended Questions $120 \text{ V}$, $80 \text{ V}$... 4 Edit Delete
17020 $\text{A long solenoid has self-inductance } L. \text{ If its length is doubled keeping total number of turns constant, then its new self-inductance will be:}$ 1 121 Recommended Questions $\frac{L}{2}$, $2L$... 1 Edit Delete
17019 $\text{The magnetic energy stored in a long solenoid of an area of cross-section } A \text{ in a small region of length } L \text{ is:}$ 1 121 Recommended Questions $\frac{B^2 AL}{2\mu_0^2}$, $\frac{AL}{2\mu_0}$... 4 Edit Delete
17018 $\text{For a coil having } L = 2 \text{ mH, the current flow through it is } I = t^2 e^{-t}. \text{ The time at which emf becomes zero is:}$ $1.\ 2\ \text{s}$ $2.\ 1\ \text{s}$ $3.\ 4\ \text{s}$ $4.\ 3\ \text{s}$ 1 121 Recommended Questions $2\ \text{s}$, $1\ \text{s}$... 1 Edit Delete
17017 $\text{Work done in increasing the current through a solenoid from 0 to 2 A is 20 J.}$ $\text{Work done in increasing the current from 4 A to 6 A is:}$ 1 121 Recommended Questions $100 \text{ J}$, $60 \text{ J}$... 1 Edit Delete
17016 $\text{The dimensions of inductance are:}$ 1 121 Recommended Questions $[MLT^{-2}A^{-2}]$, $[ML^2T^{-2}A^2]$... 4 Edit Delete
17015 $\text{A coil of self-inductance } L \text{ is connected in series with a bulb } B \text{ and an AC source.}$ $\text{The brightness of the bulb decreases when:}$ 1 121 Recommended Questions $\text{number of turns in the coil is reduced.}$, $\text{a capacitance of reactance } X_C = X_L \text{ is included in the same circuit.}$... 3 Edit Delete
17014 $\text{Calculate the self-inductance of a solenoid having 1000 turns and length 1 m.}$ $\text{(The area of cross-section is } 7 \text{ cm}^2 \text{ and } \mu_r = 1000).$ 1 121 Recommended Questions $888 \text{ H}$, $0.88 \text{ H}$... 2 Edit Delete
17013 $\text{A coil is wound of a frame of rectangular cross-section. If the linear dimensions of the frame are doubled and the number of turns per unit length of the coil remains the same, then the self inductance increases by a factor of:}$ 1 121 Recommended Questions $6$, $12$... 3 Edit Delete
17012 $\text{A 10 H inductor carries a current of 20 A. How much ice at } 0^\circ \text{C could be melted by the energy stored in the magnetic field of the inductor?}$ $\text{Latent heat of ice is } 2.26 \times 10^3 \text{ J/kg.}$ 1 121 Recommended Questions $0.08 \text{ kg}$, $8.8 \text{ kg}$... 3 Edit Delete
17011 $\text{The number of turns in a coil of wire of fixed radius and length is } 600 \text{ and its self-inductance is } 108 \text{ mH.}$ $\text{The self-inductance of a coil of } 500 \text{ turns will be:}$ 1 121 Recommended Questions $74 \text{ mH}$, $75 \text{ mH}$... 2 Edit Delete
17010 $\text{The current } i \text{ in an inductance coil varies with time } t \text{ according to the graph shown in the figure. Which one of the following plots shows the variation of voltage in the coil with time?}$ 1 121 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 3 Edit Delete
17009 $\text{Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):}$ $\text{Assertion (A): Self-inductance is called the inertia of electricity.}$ $\text{Reason (R): It is on account of self-inductance that the coil opposes any change in current passing through it.}$ $\text{In the light of the above statements choose the correct answer from the options given below:}$ 1 121 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
17008 $\text{A coil of resistance } 20 \, \Omega \text{ and inductance } 5 \, \text{H has been connected to a } 200 \, \text{V battery. The maximum energy stored in the coil is:}$ 1 121 Recommended Questions $250 \, \text{J}$, $125 \, \text{J}$... 1 Edit Delete
17007 $\text{A long solenoid has 1000 turns. When a current of } 4 \text{ A flows through it, the magnetic flux linked with each turn of the solenoid is } 4 \times 10^{-3} \text{ Wb. The self-inductance of the solenoid is:}$ 1 121 Recommended Questions $3 \text{ H}$, $2 \text{ H}$... 3 Edit Delete
17006 $\text{The current through a choke coil increases from zero to } 6 \text{ A in } 0.3 \text{ seconds and an induced emf of } 30 \text{ V is produced. The inductance of the coil is:}$ 1 121 Recommended Questions $5 \text{ H}$, $2.5 \text{ H}$... 3 Edit Delete
17005 $\text{The back emf induced in a coil, when current changes from 1 ampere to zero in one milli-second, is 4 volts. The self-inductance of the coil is:}$ 1 121 Recommended Questions $1 \text{ H}$, $2 \text{ H}$... 4 Edit Delete
17004 $\text{Current in a circuit falls from } 5.0 \text{ A to } 0 \text{ A in } 0.1 \text{ s. If an average emf of } 200 \text{ V is induced, the self-inductance of the circuit is:}$ 1 121 Recommended Questions $4 \text{ H}$, $2 \text{ H}$... 1 Edit Delete
17003 $\text{Two identical conductors } P \text{ and } Q \text{ are placed on two frictionless (conducting) rails } R \text{ and } S \text{ in a uniform magnetic field directed into the plane. If } P \text{ is moved in the direction as shown in the figure with a constant speed, then rod } Q:$ 1 121 Recommended Questions $\text{will be attracted toward } P.$, $\text{will be repelled away from } P.$... 1 Edit Delete
17002 $\text{A cylindrical magnet is kept along the axis of a circular coil.}$ $\text{On rotating the magnet about its axis, the coil will have induced in it:}$ 1 121 Recommended Questions $\text{No current}$, $\text{A current}$... 1 Edit Delete
17001 $\text{A conducting rod } AC \text{ of length } 4l \text{ is rotated about point } O \text{ in a uniform magnetic field } \vec{B} \text{ directed into the paper.}$ $\text{If } AO = l \text{ and } OC = 3l, \text{ then:}$ 1 121 Recommended Questions $V_A - V_O = \frac{B \omega l^2}{2}$, $V_O - V_C = \frac{7}{2} B \omega l^2$... 3 Edit Delete
17000 $\text{A conducting square loop of side } L \text{ and resistance } R \text{ moves in its plane with a uniform velocity } v \text{ perpendicular to one of its sides.}$ $\text{A magnetic induction } B \text{ constant in time and space, pointing perpendicular and into the plane of the loop exists everywhere.}$ $\text{The current induced in the loop is:}$ 1 121 Recommended Questions $\frac{Blv}{R} \text{ clockwise}$, $\frac{Blv}{R} \text{ anticlockwise}$... 4 Edit Delete
16999 $\text{A rectangular loop with a sliding connector of length } l = 1.0 \text{ m is situated in a uniform magnetic field } B = 2\text{ T perpendicular to the plane of the loop.}$ $\text{Resistance of connector is } r = 2\, \Omega. \text{ Two resistances of } 6\, \Omega \text{ and } 3\, \Omega \text{ are connected as shown in the figure.}$ $\text{The external force required to keep the connector moving with a constant velocity } v = 2\, \text{m/s is:}$ 1 121 Recommended Questions $6\, \text{N}$, $4\, \text{N}$... 3 Edit Delete
16998 $\text{A square loop of side } 5 \text{ cm enters a magnetic field with } 1 \text{ cm s}^{-1}. \text{ If the front edge enters the magnetic field at } t = 0, \text{ then which graph best depicts emf?}$ 1 121 Recommended Questions $\begin{array}{c} V \\ 3 \times 10^{-4} \\ 0 \\ 5 \\ 15 \\ 20 \\ t (s) \end{array}$, $\begin{array}{c} V \\ 3 \times 10^{-4} \\ 0 \\ 5 \\ 15 \\ 20 \\ t (s) \end{array}$... 3 Edit Delete
16997 $\text{A conducting rod of length } 2l \text{ is rotating with constant angular speed } \omega \text{ about its perpendicular bisector.}$ $\text{A uniform magnetic field } \vec{B} \text{ exists parallel to the axis of rotation.}$ $\text{The emf induced between the two ends of the rod is:}$ 1 121 Recommended Questions $B \omega l^2$, $\frac{1}{2} B \omega l^2$... 4 Edit Delete
16996 $\text{A short magnet is allowed to fall along the axis of a horizontal metallic ring.}$ $\text{Starting from rest, the distance fallen by the magnet in one second may be:}$ 1 121 Recommended Questions $4 \text{ m}$, $5 \text{ m}$... 1 Edit Delete
16995 $\text{A copper rod of mass } m \text{ slides under gravity on two smooth parallel rails } l \text{ distance apart and set at an angle } \theta \text{ to the horizontal as shown in figure.}$ $\text{At the bottom, the rails are joined by a resistance } R. \text{ There is a uniform magnetic field perpendicular to the plane of the rails.}$ $\text{The terminal velocity of the rod is:}$ 1 121 Recommended Questions $\frac{mgR \cos \theta}{B^2 l^2}$, $\frac{mgR \sin \theta}{B^2 l^2}$... 2 Edit Delete
16994 $\text{A thin semicircular conducting ring of radius } R \text{ is falling with its plane vertical}$ $\text{in a horizontal magnetic induction } B. \text{ At the position } MNQ, \text{ the speed of the}$ $\text{ring is } v \text{ and the potential difference developed across the ring is:}$ 1 121 Recommended Questions $\text{Zero}$, $Bv\pi R^2 / 2 \text{ and } M \text{ is at the higher potential}$... 4 Edit Delete
16993 $\text{A rod } AB \text{ of length } l \text{ is moving with constant speed } v \text{ in a uniform magnetic field on a conducting } U\text{-shaped wire as shown.}$ $\text{If the rate of loss of heat energy across resistance } R \text{ is } Q, \text{ then the force needed parallel to velocity to keep rod moving with constant speed } v \text{ is:}$ 1 121 Recommended Questions $Qv$, $\frac{Q}{v}$... 2 Edit Delete
16992 $\text{A rod having length } l \text{ and resistance } R_0 \text{ is moving with a speed } v \text{ as shown in the figure. The current through the rod is:}$ 1 121 Recommended Questions $\frac{Blv}{\frac{R_1 R_2}{R_1 + R_2} + R_0}$, $\frac{Blv}{\left(\frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_0}\right)^2}$... 1 Edit Delete
16991 $\text{A conducting wire is moving towards the right in a magnetic field } B. \text{ The direction of the induced current in the wire is shown in the figure. The direction of the magnetic field will be:}$ 1 121 Recommended Questions $\text{In the plane of paper pointing towards the right.}$, $\text{In the plane of paper pointing towards the left.}$... 3 Edit Delete
16990 $\text{In a uniform magnetic field, a ring is rotating about its axis which is parallel to the magnetic field and the magnetic field is perpendicular to the plane of the ring. The induced electric field in the ring:}$ 1 121 Recommended Questions $\text{Is zero.}$, $\text{Depends on the radius of the ring.}$... 1 Edit Delete
16989 $\text{An electric potential difference will be induced between the ends of the conductor shown in the diagram when the conductor moves in the direction of:}$ 1 121 Recommended Questions $P$, $Q$... 4 Edit Delete
16988 $\text{A conducting square frame of side } a \text{ and a long straight wire carrying current } i \text{ are located in the same plane as shown in the figure. The frame moves to the right with a constant velocity } v. \text{ The emf induced in the frame will be proportional to:}$ 1 121 Recommended Questions $\frac{1}{x^2}$, $\frac{1}{(2x-a)^2}$... 4 Edit Delete
16987 $\text{When a conducting wire } XY \text{ is moved towards the right, a current flows in the anti-clockwise direction.}$ $\text{Direction of magnetic field at point } O \text{ is:}$ 1 121 Recommended Questions $\text{parallel to the motion of wire.}$, $\text{along with } XY.$... 3 Edit Delete
16986 $\text{A rectangular, a square, a circular, and an elliptical loop, all in the } (x-y) \text{ plane,}$ $\text{are moving out of a uniform magnetic field with a constant velocity, } \vec{v} = v \hat{i}. $ $\text{The magnetic field is directed along the negative } z\text{-axis direction.}$ $\text{The induced emf, during the passage of these loops out of the field region,}$ $\text{will not remain constant for:}$ 1 121 Recommended Questions $\text{the rectangular, circular, and elliptical loops.}$, $\text{the circular and the elliptical loops.}$... 2 Edit Delete
16985 $\text{Consider the situation shown in the figure. The wire } AB \text{ is sliding on the fixed rails with a constant velocity.}$ $\text{If the wire } AB \text{ is replaced by a semicircular wire, the magnitude of the induced current will:}$ 1 121 Recommended Questions $\text{increase.}$, $\text{remain the same.}$... 2 Edit Delete
16984 $\text{A conductor } ABOCD \text{ moves along its bisector with a velocity of } 1 \text{ m/s through a perpendicular magnetic field of } 1 \text{ wb/m}^2, \text{ as shown in fig. If all the four sides are of } 1 \text{ m length each, then the induced emf between points } A \text{ and } D \text{ is:}$ 1 121 Recommended Questions $0$, $1.41 \text{ volt}$... 2 Edit Delete
16983 $\text{A wire } cd \text{ of length } l \text{ and mass } m \text{ is sliding without friction on conducting rails } ax \text{ and } by \text{ as shown.}$ $\text{The vertical rails are connected to each other with a resistance } R \text{ between } a \text{ and } b.$ $\text{A uniform magnetic field } B \text{ is applied perpendicular to the plane } abcd \text{ such that } cd \text{ moves with a constant velocity of:}$ 1 121 Recommended Questions $\frac{mgR}{Bl}$, $\frac{mgR}{B^2l^2}$... 2 Edit Delete
16982 $A \ 1 \ \text{m} \ \text{long} \ \text{metallic} \ \text{rod} \ \text{is} \ \text{rotating} \ \text{with} \ \text{an} \ \text{angular} \ \text{frequency} \ \text{of} \ 400 \ \text{rad/s} \ \text{about} \ \text{an} \ \text{axis} \ \text{normal} \ \text{to} \ \text{the} \ \text{rod} \ \text{passing} \ \text{through} \ \text{its} \ \text{one} \ \text{end.}$ $\text{The} \ \text{other} \ \text{end} \ \text{of} \ \text{the} \ \text{rod} \ \text{is} \ \text{in} \ \text{contact} \ \text{with} \ \text{a} \ \text{circular} \ \text{metallic} \ \text{ring.}$ $\text{A} \ \text{constant} \ \text{and} \ \text{uniform} \ \text{magnetic} \ \text{field} \ \text{of} \ 0.5 \ \text{T} \ \text{parallel} \ \text{to} \ \text{the} \ \text{axis} \ \text{exists} \ \text{everywhere.}$ $\text{The} \ \text{emf} \ \text{induced} \ \text{between} \ \text{the} \ \text{centre} \ \text{and} \ \text{the} \ \text{ring} \ \text{is:}$ 1 121 Recommended Questions $200 \ \text{V}$, $100 \ \text{V}$... 2 Edit Delete
16981 $\text{A square metallic wire loop of side } 0.1 \text{ m and resistance of } 1 \, \Omega \text{ is moved with a constant velocity in a magnetic field of } 2 \, \text{wb/m}^2 \text{ as shown in the figure. The magnetic field is perpendicular to the plane of the loop and the loop is connected to a network of resistances. What should be the velocity of the loop so as to have a steady current of } 1 \, \text{mA in the loop?}$ 1 121 Recommended Questions $1 \, \text{cm/s}$, $2 \, \text{cm/s}$... 2 Edit Delete
16980 $\text{A magnetic rod is inside a coil of wire which is connected to an ammeter. If the rod is stationary, which of the following statements is true?}$ 1 121 Recommended Questions $\text{The rod induces a small current.}$, $\text{The rod loses its magnetic field.}$... 3 Edit Delete
16979 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{When a piece of non-metal and a metal are dropped from the same height near the surface of the earth, the non-metallic piece will reach the ground first.}$ $\text{Reason (R):}$ $\text{Induced current in metal will decrease the acceleration.}$ 1 121 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
16978 $\text{In the figure shown a square loop } P Q R S \text{ of side } a \text{ and resistance } r \text{ is placed near an infinitely long wire carrying a constant current } I. \text{ The sides } P Q \text{ and } R S \text{ are parallel to the wire. The wire and the loop are in the same plane. The loop is rotated by } 180^\circ \text{ about an axis parallel to the long wire and passing through the midpoints of the side } Q R \text{ and } P S. \text{ The total amount of charge which passes through any point of the loop during rotation is:}$ 1 121 Recommended Questions $\frac{\mu_0 I a}{2 \pi r} \ln(2)$, $\frac{\mu_0 I a}{\pi r} \ln(2)$... 2 Edit Delete
16977 $\text{A metallic ring connected to a rod oscillates freely like a pendulum. If now a magnetic field is applied in the horizontal direction so that the pendulum now swings through the field, the pendulum will:}$ 1 121 Recommended Questions $\text{Keep oscillating with the old-time period.}$, $\text{Keep oscillating with a smaller time period.}$... 4 Edit Delete
16976 $\text{A bar magnet is made to fall through a long surface copper tube. The speed } (v) \text{ of the magnet as a function of time } (t) \text{ is best represented by:}$ 1 121 Recommended Questions $a$, $b$... 4 Edit Delete
16975 $\text{Given below are two statements:}$ $\text{Statement I: A steady magnetic field can be produced by a steady current.}$ $\text{Statement II: A steady current can be produced in a circuit by a changing magnetic field.}$ 1 121 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 2 Edit Delete
16974 $\text{A square coil } ACDE \text{ with its plane vertical is released from rest in a horizontal uniform magnetic field } \vec{B} \text{ of length } 2L \text{ (figure). The acceleration of the coil is:}$ 1 121 Recommended Questions $\text{less than } g \text{ for all the time till the loop crosses the magnetic field completely.}$, $\text{less than } g \text{ when it enters the field and greater than } g \text{ when it comes out of the field.}$... 4 Edit Delete
16973 $\text{A uniform but time-varying magnetic field } B(t) \text{ exists in a circular region of radius } a \text{ and is directed into the plane of the paper, as shown. The magnitude of the induced electric field at point } P \text{ at a distance } r \text{ from the centre of the circular region:}$ 1 121 Recommended Questions $\text{is zero}$, $\text{decreases as } \frac{1}{r}$... 2 Edit Delete
16972 $\text{A coil of a mean area of } 500 \text{ cm}^2 \text{ and } 1000 \text{ turns is held perpendicular to a uniform field of } 0.4 \text{ Gauss.}$ $\text{The coil is turned through } 180^\circ \text{ in } \frac{1}{10} \text{ seconds.}$ $\text{The average induced emf is:}$ 1 121 Recommended Questions $0.04 \text{ V}$, $0.4 \text{ V}$... 1 Edit Delete
16971 $\text{A coil has } 1000 \text{ turns and } 500 \text{ cm}^2 \text{ as its area. The plane of the coil is placed at right angles to a magnetic field of } 2 \times 10^{-5} \text{ Wb/m}^2. \text{ The coil is rotated through } 180^\circ \text{ in } 0.2 \text{ seconds. The average emf induced in the coil, in milli-volts, is:}$ 1 121 Recommended Questions $5$, $10$... 2 Edit Delete
16970 $\text{A coil has } 1000 \text{ turns and } 500 \text{ cm}^2 \text{ as its area.}$ $\text{The plane of the coil is placed at right angles to a magnetic field of } 2 \times 10^{-5} \text{ Wb/m}^2.$ $\text{The coil is rotated through } 180^\circ \text{ in } 0.2 \text{ seconds.}$ $\text{The average emf induced in the coil, in milli-volts, is:}$ 1 121 Recommended Questions $5$, $10$... 2 Edit Delete
16969 $\text{A conducting wireframe is placed in a magnetic field that is directed into the paper.}$ $\text{The magnetic field is increasing at a constant rate.}$ $\text{The directions of induced current in wires } AB \text{ and } CD \text{ are:}$ 1 121 Recommended Questions $B \text{ to } A \text{ and } D \text{ to } C$, $A \text{ to } B \text{ and } C \text{ to } D$... 1 Edit Delete
16968 $\text{A rectangular loop of wire shown below is coplanar with a long wire carrying current, } I.$ $\text{The loop is pulled to the right as indicated. What are the directions of the induced current in the loop and the magnetic forces on the left and right sides of the loop?}$ 1 121 Recommended Questions $\text{counterclockwise, to the left, to the right}$, $\text{clockwise, to the left, to the right}$... 2 Edit Delete
16967 $\text{The graph gives the magnitude } B(t) \text{ of a uniform magnetic field that exists throughout a conducting loop, perpendicular to the plane of the loop. Rank the five regions of the graph according to the magnitude of the emf induced in the loop, greatest first:}$ 1 121 Recommended Questions $b > (d = e) < (a = c)$, $b > (d = e) > (a = c)$... 2 Edit Delete
16966 $\text{A metallic ring is attached to the wall of a room. When the north pole of a magnet is brought near to it, the induced current in the ring will be:}$ 1 121 Recommended Questions $\text{first clockwise and then anticlockwise.}$, $\text{in the clockwise direction.}$... 3 Edit Delete
16965 $\text{A coil has 500 turns and the flux through the coil is } \phi = 3t^2 + 4t + 9 \text{ milliweber.}$ $\text{The magnitude of induced emf between the ends of the coil at } t = 5 \text{ s is:}$ 1 121 Recommended Questions $34 \text{ millivolt}$, $17 \text{ volt}$... 2 Edit Delete
16964 $\text{Some magnetic flux is changed from a coil of resistance } 10 \, \Omega. \text{ As a result, an induced current is developed in it, which varies with time as shown in the figure. The magnitude of change in flux through the coil in Wb is:}$ $\begin{array}{c} i \, (\text{A}) \\ | \\ 4 \\ \end{array}$ $\begin{array}{c} \rightarrow \\ \end{array}$ $\begin{array}{c} 0.1 \, t \, (\text{s}) \\ \end{array}$ 1 121 Recommended Questions $2$, $4$... 1 Edit Delete
16963 $\text{The adjoining figure shows two different arrangements in which two square}$ $\text{wireframes are placed in a uniform magnetic field } B \text{ decreasing with time.}$ $\text{The direction of the induced current } I \text{ in the figure is:}$ 1 121 Recommended Questions $\text{From } a \text{ to } b \text{ and from } c \text{ to } d$, $\text{From } a \text{ to } b \text{ and from } f \text{ to } e$... 3 Edit Delete
16962 $\text{The magnetic flux through a coil varies with time } t \text{ as shown in the diagram.}$ $\text{Which graph best represents the variation of the emf } E \text{ induced in the coil with time } t?$ 1 121 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 3 Edit Delete
16961 $\text{A magnet is brought towards a coil first (i) speedily (ii) slowly.}$ $\text{It can be concluded that the induced e.m.f. and the induced charge in the two cases,}$ $\text{will be respectively:}$ 1 121 Recommended Questions $\text{More in the first case, more in the first case.}$, $\text{More in the first case, equal in both cases.}$... 2 Edit Delete
16960 $\text{As shown in the figure, a magnet is moved at a fast speed towards a coil at rest. Due to this induced electromotive force, induced current and induced charge in the coil is } E, I, \text{ and } Q \text{ respectively. If the speed of the magnet is doubled, the incorrect statement is:}$ 1 121 Recommended Questions $E \text{ increases}$, $I \text{ increases}$... 4 Edit Delete
16959 $\text{An electron moves on a straight-line path } XY \text{ as shown. The } abcd \text{ is a coil adjacent to the path of the electron. What will be the direction of the current, if any induced in the coil?}$ 1 121 Recommended Questions $abcd$, $adcb$... 3 Edit Delete
16958 $\text{A conducting circular loop is placed in a uniform magnetic field of } 0.04 \text{ T with its plane perpendicular to the magnetic field.}$ $\text{The radius of the loop starts shrinking at a rate of } 2 \text{ mm/s.}$ $\text{The induced emf in the loop when the radius is } 2 \text{ cm is:}$ 1 121 Recommended Questions $3.2 \pi \mu V$, $4.8 \pi \mu V$... 1 Edit Delete
16957 $\text{An aluminium ring } B \text{ faces an electromagnet } A. \text{ If the current } I \text{ through } A \text{ can be altered, then:}$ 1 121 Recommended Questions $\text{whether } I \text{ increases or decreases, } B \text{ will not experience any force.}$, $\text{if } I \text{ decreases, } A \text{ will repel } B.$... 4 Edit Delete
16956 $\text{In the given magnetic flux versus time graph, the magnitude of emf induced in the loop at } t = 3 \text{ s is:}$ $\phi_B \text{ (Wb)}$ 1 121 Recommended Questions $5 \text{ V}$, $4 \text{ V}$... 2 Edit Delete
16955 $\text{Given below are two statements:}$ $\text{Assertion (A): The bar magnet falling vertically along the axis of the horizontal coil will be having acceleration less than } g.$ $\text{Reason (R): Clockwise current induced in the coil.}$ 1 121 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
16954 $\text{A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is:}$ 1 121 Recommended Questions $\text{Twice per revolution}$, $\text{Four times per revolution}$... 1 Edit Delete
16953 $\text{A bar magnet is released along the vertical axis of the conducting coil. The acceleration of the bar magnet is:}$ 1 121 Recommended Questions $\text{greater than } g.$, $\text{less than } g.$... 2 Edit Delete
16952 $\text{A coil having an area } A_0 \text{ is placed in a magnetic field which changes from } B_0 \text{ to } 4B_0 \text{ in time interval } t. \text{ The average EMF induced in the coil will be:}$ 1 121 Recommended Questions $\frac{3A_0B_0}{t}$, $\frac{4A_0B_0}{t}$... 1 Edit Delete
16951 $\text{The current in a coil varies with time } t \text{ as } I = 3t^2 + 2t. \text{ If the inductance of coil be } 10 \text{ mH, the value of induced emf at } t = 2 \text{ s will be:}$ 1 121 Recommended Questions $0.14 \text{ V}$, $0.12 \text{ V}$... 1 Edit Delete
16950 $\text{In a circuit with a coil of resistance } 2 \, \Omega, \text{ the magnetic flux changes from } 2.0 \, \text{Wb to } 10.0 \, \text{Wb in } 0.2 \, \text{s. The charge that flows in the coil during this time is:}$ 1 121 Recommended Questions $5.0 \, \text{C}$, $4.0 \, \text{C}$... 2 Edit Delete
16949 $\text{A coil having number of turns } N \text{ and cross-sectional area } A \text{ is rotated in a uniform magnetic field } B \text{ with an angular velocity } \omega. \text{ The maximum value of the emf induced in it is:}$ 1 121 Recommended Questions $\frac{NBA}{\omega}$, $NBA\omega$... 2 Edit Delete
16948 $\text{The magnetic flux linked with a coil varies with time as } \phi = 2t^2 - 6t + 5,$ $\text{where } \phi \text{ is in Weber and } t \text{ is in seconds. The induced current is zero at:}$ 1 121 Recommended Questions $t = 0$, $t = 1.5 \text{ s}$... 2 Edit Delete
16947 $\text{A circular loop of radius } R \text{ carrying current } i \text{ lies in the } x-y \text{ plane.}$ $\text{If the centre of the loop coincides with the origin, then the total magnetic flux passing through the } x-y \text{ plane will be:}$ 1 121 Recommended Questions $\text{directly proportional to } i.$, $\text{directly proportional to } R.$... 4 Edit Delete
16946 $\text{A square loop with a side length of } 1 \text{ m and resistance of } 1 \, \Omega \text{ is placed in a uniform magnetic field of } 0.5 \, \text{T.}$ $\text{The plane of the loop is perpendicular to the direction of the magnetic field.}$ $\text{The magnetic flux through the loop is:}$ 1 121 Recommended Questions $\text{zero}$, $2 \, \text{Wb}$... 3 Edit Delete
16945 $\text{What is the dimensional formula of magnetic flux?}$ 1 121 Recommended Questions $[ML^2T^{-2}A^{-1}]$, $[MLT^{-1}A^{-2}]$... 1 Edit Delete
16944 $\text{A square of side } L \text{ meters lies in the } XY\text{-plane in a region where the magnetic field is given by } \vec{B} = B_0 \left( 2\hat{i} + 3\hat{j} + 4\hat{k} \right) \text{ T where } B_0 \text{ is constant. The magnitude of flux passing through the square will be:}$ 1 121 Recommended Questions $2B_0L^2 \text{ Wb}$, $3B_0L^2 \text{ Wb}$... 3 Edit Delete
16943 $\text{The radius of a loop as shown in the figure is } 10 \text{ cm.}$ $\text{If the magnetic field is uniform and has a value } 10^{-2} \text{ T, then the flux through the loop will be:}$ 1 121 Recommended Questions $2\pi \times 10^{-2} \text{ Wb}$, $3\pi \times 10^{-4} \text{ Wb}$... 3 Edit Delete
16942 $\text{If a current is passed through a circular loop of radius } R \text{ then magnetic flux through a coplanar square loop of side } l \text{ as shown in the figure } (l \ll R) \text{ is:}$ 1 121 Recommended Questions $\frac{\mu_0 I}{2} \frac{R^2}{l}$, $\frac{\mu_0 I l^2}{2R}$... 2 Edit Delete
16941 $\text{A circular disc of the radius } 0.2 \text{ m is placed in a uniform magnetic field of induction } \frac{1}{\pi} \left( \frac{\text{Wb}}{\text{m}^2} \right) \text{ in such a way that its axis makes an angle of } 60^\circ \text{ with } \vec{B}. \text{ The magnetic flux linked to the disc will be:}$ 1 121 Recommended Questions $0.02 \text{ Wb}$, $0.06 \text{ Wb}$... 1 Edit Delete
16940 $\text{The net magnetic flux through any closed surface, kept in uniform magnetic field is:}$ 1 121 Recommended Questions $\text{zero}$, $\frac{\mu_0}{4\pi}$... 1 Edit Delete
16939 $\text{The variation of magnetic susceptibility } (\chi) \text{ with temperature for a diamagnetic substance is best represented by:}$ 1 120 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
16938 $\text{Given below are two statements:}$ $\text{Assertion (A): Magnetic susceptibility is a pure number.}$ $\text{Reason (R): The value of magnetic susceptibility for vacuum is one.}$ 1 120 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
16937 $\text{For protecting a magnetic needle, it should be placed:}$ 1 120 Recommended Questions $\text{In an iron box.}$, $\text{In a wooden box.}$... 1 Edit Delete
16936 $\text{A ferromagnetic material is placed in an external magnetic field. The magnetic domains:}$ 1 120 Recommended Questions $\text{must increase in size.}$, $\text{must decrease in size.}$... 3 Edit Delete
16935 $\text{A thin diamagnetic rod is placed vertically between the poles of an electromagnet.}$ $\text{When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up,}$ $\text{out of the horizontal magnetic field. Hence the rod gains gravitational potential energy.}$ $\text{The work required to do this comes from:}$ 1 120 Recommended Questions $\text{the current source}$, $\text{the magnetic field}$... 4 Edit Delete
16934 $\text{When cooled below } 4.2 \text{ K, mercury becomes a superconductor, which means it has no electrical resistance. When a current is passed through mercury under these conditions, which one of the following effects will be present?}$ $\text{(a) thermal}$ $\text{(b) chemical}$ $\text{(c) magnetic}$ $\text{Choose the correct option from the given ones:}$ 1 120 Recommended Questions $\text{(a) and (c) only}$, $\text{(a), (b) and (c)}$... 4 Edit Delete
16933 $\text{A superconductor exhibits perfect:}$ $1.\ \text{Ferrimagnetism}$ $2.\ \text{Ferromagnetism}$ $3.\ \text{Paramagnetism}$ $4.\ \text{Diamagnetism}$ 1 120 Recommended Questions $\text{Ferrimagnetism}$, $\text{Ferromagnetism}$... 4 Edit Delete
16932 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{All paramagnetic substances become diamagnetic as their temperature is lowered.}$ $\text{Statement II:}$ \text{All ferromagnetic substances become paramagnetic when their temperature is lowered.}$ 1 120 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 3 Edit Delete
16931 $\text{The universal property of all substances is:}$ 1 120 Recommended Questions $\text{diamagnetism only}$, $\text{ferromagnetism only}$... 1 Edit Delete
16930 $\text{The magnetic moment of a diamagnetic atom is:}$ 1 120 Recommended Questions $\text{much greater than one.}$, $\text{one.}$... 4 Edit Delete
16929 $\text{A frog can be levitated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as:}$ 1 120 Recommended Questions $\text{Paramagnetic}$, $\text{Diamagnetic}$... 2 Edit Delete
16928 $\text{The variation of the intensity of magnetisation } (I) \text{ with respect to the}$ $\text{magnetising field } (H) \text{ in a diamagnetic substance is described by the graph:}$ 1 120 Recommended Questions $OD$, $OC$... 2 Edit Delete
16927 $\text{The magnetic susceptibility } \chi \text{ of a diamagnetic material depends on absolute temperature } T \text{ as:}$ 1 120 Recommended Questions $\chi \propto T$, $\chi \propto \frac{1}{T}$... 3 Edit Delete
16926 $\text{The possible value of magnetic susceptibility of a diamagnetic material can be:}$ 1 120 Recommended Questions $-2.45$, $0.75$... 3 Edit Delete
16925 $\text{Select the incorrect statement regarding magnetic material.}$ 1 120 Recommended Questions $\text{The magnetic dipole moment of each atom of para and ferromagnetic substance is zero and that of diamagnetic material is non-zero in the absence of external magnetizing force}$, $\text{When the diamagnetic substance is brought near the north or south pole of a bar magnet, it is repelled}$... 1 Edit Delete
16924 $\text{The material which is used to make permanent magnet has:}$ 1 120 Recommended Questions $\text{High retentivity, low coercivity}$, $\text{Low retentivity, low coercivity}$... 4 Edit Delete
16923 $\text{If the magnetic dipole moment of an atom of diamagnetic material,}$ $\text{paramagnetic material and ferromagnetic material are denoted by}$ $\mu_d, \mu_p, \text{ and } \mu_f \text{ respectively, then:}$ 1 120 Recommended Questions $\mu_p = 0 \text{ and } \mu_f \neq 0$, $\mu_d \neq 0 \text{ and } \mu_p = 0$... 4 Edit Delete
16922 $\text{Diamagnetic material in a magnetic field moves:}$ 1 120 Recommended Questions $\text{from stronger to the weaker parts of the field}$, $\text{from weaker to the stronger parts of the field}$... 1 Edit Delete
16921 $\text{The susceptibility of a paramagnetic material is } 99. \text{ The permeability of the material in Wb/A-m is:}$ $\text{(Permeability of free space, } \mu_0 = 4\pi \times 10^{-7} \text{ Wb/A-m )}$ 1 120 Recommended Questions $4\pi \times 10^{-7}$, $4\pi \times 10^{-4}$... 3 Edit Delete
16920 $\text{Needles } N_1, N_2 \text{ and } N_3 \text{ are made of ferromagnetic, paramagnetic, and diamagnetic substances respectively. A magnet, when brought close to them, will:}$ 1 120 Recommended Questions $\text{attract all three of them}$, $\text{attract } N_1 \text{ and } N_2 \text{ strongly but repel } N_3 \text{ weakly}$... 3 Edit Delete
16919 $\text{If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is:}$ 1 120 Recommended Questions $\text{repelled by both the poles}$, $\text{repelled by the north pole and attracted by the south pole}$... 1 Edit Delete
16918 $\text{There are four light-weight-rod samples } A, B, C, D \text{ separately suspended by threads. A bar magnet is slowly brought near each sample and the following observations are noted:}$ $\text{(i) } A \text{ is feebly repelled. (ii) } B \text{ is feebly attracted.}$ $\text{(iii) } C \text{ is strongly attracted. (iv) } D \text{ remains unaffected.}$ $\text{Which one of the following is true?}$ 1 120 Recommended Questions $C \text{ is of a diamagnetic material.}$, $D \text{ is of a ferromagnetic material.}$... 4 Edit Delete
16917 $\text{The magnetic susceptibility is negative for:}$ 1 120 Recommended Questions $\text{paramagnetic material only.}$, $\text{ferromagnetic material only.}$... 4 Edit Delete
16916 $\text{Which of the following is not dimensionless?}$ $\text{(where symbols stand for their usual meanings in magnetism)}$ 1 120 Recommended Questions $\frac{I}{H}$, $\frac{B}{\mu_0 H}$... 4 Edit Delete
16915 $\text{The magnetic dipoles in a diamagnetic material are represented, for three situations.}$ $\text{The three situations differ in magnitude if a magnetic field is applied to the material.}$ $\text{In which situation the magnetization of the material is the greatest:}$ 1 120 Recommended Questions $A$, $B$... 2 Edit Delete
16914 $\text{A bar magnet has coercivity } 4 \times 10^3 \text{ Am}^{-1}. \text{ It is desired to demagnetize it by inserting it inside a solenoid } 12 \text{ cm long and having } 60 \text{ turns. The current that should be sent through the solenoid is:}$ $1.\ 2 \text{ A}$ $2.\ 4 \text{ A}$ $3.\ 6 \text{ A}$ $4.\ 8 \text{ A}$ 1 120 Recommended Questions $2 \text{ A}$, $4 \text{ A}$... 4 Edit Delete
16913 $\text{S.I. unit of intensity of magnetization is:}$ 1 120 Recommended Questions $\text{Ampere-metre}$, $\text{Ampere-metre}^2$... 3 Edit Delete
16912 $\text{The relationship between permeability } \mu \text{ and the magnetising field } H \text{ for a sample of iron is given by: } \mu = \left( \frac{0.5}{H} + 8 \times 10^{-4} \right) \text{ henry per metre, where } H \text{ is measured in A/m. What value of } H \text{ is required to produce a magnetic induction of } 1.0 \text{ Wb/m}^2?$ 1 120 Recommended Questions $500 \text{ A/m}$, $0.625 \text{ A/m}$... 3 Edit Delete
16911 $\text{When a small ferromagnetic magnet is fully demagnetized, its coercivity is measured to be } 3 \times 10^3 \text{ Am}^{-1}. \text{ A solenoid of length } 10 \text{ cm, consisting of } 100 \text{ turns, is used to achieve this demagnetization. What should be the current flowing through the solenoid to completely demagnetize the magnet when placed inside it?}$ 1 120 Recommended Questions $6 \text{ A}$, $30 \text{ mA}$... 3 Edit Delete
16910 $\text{The magnetic moment of a magnet } (10 \text{ cm} \times 4 \text{ cm} \times 1 \text{ cm}) \text{ is } 4 \text{ Am}^2. \text{ Its intensity of magnetisation is:}$ 1 120 Recommended Questions $10^3 \text{ A/m}$, $10^2 \text{ A/m}$... 3 Edit Delete
16909 $\text{A uniform magnetic field, parallel to the plane of the paper existed in space initially directed from left to right. When a bar of soft iron is placed in the field parallel to it, the lines of force passing through it will be represented by:}$ 1 120 Recommended Questions $\text{Option 1}$, $\text{Option 2}$... 2 Edit Delete
16908 $\text{When a magnetic material is subjected to a very small magnetising force } H, \text{ the intensity of magnetisation is proportional to:}$ 1 120 Recommended Questions $\frac{1}{\sqrt{H}}$, $\sqrt{H}$... 3 Edit Delete
16907 $\text{There are two materials } A \text{ and } B. \text{ The material } B \text{ have high coercivity and } A \text{ have low coercivity. The hysteresis loop area of material } A \text{ is lesser than the material } B. \text{ Then:}$ 1 120 Recommended Questions $\text{material } A \text{ is preferred for making electromagnets.}$, $\text{material } B \text{ is preferred for making permanent magnets.}$... 4 Edit Delete
16906 $\text{The unit of magnetic moment is:}$ 1 120 Recommended Questions $\text{A/m}$, $\text{Am}$... 3 Edit Delete
16905 $\text{The magnetization of a piece of iron or steel:}$ 1 120 Recommended Questions $\text{depends on the strength of the magnetizing field.}$, $\text{depends on external conditions such as temperature.}$... 4 Edit Delete
16904 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{Susceptibility is defined as the ratio of intensity of magnetization } I \text{ to magnetic intensity } H.$ $\text{Reason (R):}$ $\text{Greater the value of susceptibility, the smaller the value of the intensity of magnetization } I.$ 1 120 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
16903 $\text{A current-carrying loop is placed in magnetic field as shown in figure. What is the time period of small oscillation about an axis passing through diameter of the coil?}$ $\text{(Mass of coil is } m, \text{ radius is } R)$ 1 120 Recommended Questions $2\pi \sqrt{\frac{m}{IB}}$, $\sqrt{\frac{2\pi m}{IB}}$... 2 Edit Delete
16902 $\text{A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field is } 2 \frac{5}{4} \text{ seconds. One of the magnets is removed and if the other magnet oscillates in the same field, then the time period in seconds is:}$ 1 120 Recommended Questions $2 \frac{1}{4}$, $2 \frac{1}{2}$... 3 Edit Delete
16901 $\text{Select the correct option based on the statements:}$ $\text{Statement I: The magnetic field of a circular loop at very far away point on the axial line varies with distance as like that of a magnetic dipole.}$ $\text{Statement II: The magnetic field due to magnetic dipole varies inversely with the square of the distance from the centre on the axial line.}$ 1 120 Recommended Questions $\text{Statement I is correct and Statement II is incorrect.}$, $\text{Statement I is incorrect and Statement II is correct.}$... 1 Edit Delete
16900 $\text{If a magnetic monopole were to exist, what would be appropriate units of its 'strength'?}$ 1 120 Recommended Questions $\text{Wb/T}$, $\text{T/m}^3$... 3 Edit Delete
16899 $\text{A thin rectangular magnet suspended freely has a period of oscillation equal to } T. \text{ Now it is broken into two equal halves (each having half of the original length) and one piece is made to oscillate freely in the same field. If its period of oscillation is } T', \text{ then ratio } \frac{T'}{T} \text{ is:}$ 1 120 Recommended Questions $\frac{1}{4}$, $\frac{1}{2\sqrt{2}}$... 3 Edit Delete
16898 $\text{Two bar magnets are held together tightly in a vibration magnetometer.}$ $\text{When their like poles are together, they make 20 oscillations per minute}$ $\text{and when their unlike poles are together, they make 8 oscillations per minute.}$ $\text{The ratio of the magnetic dipole moments of two bar magnets is:}$ 1 120 Recommended Questions $29 : 21$, $6 : 15$... 1 Edit Delete
16897 $\text{A current-carrying loop is placed in a uniform magnetic field in four different orientations, I, II, III \& IV. The decreasing order of potential energy is:}$ 1 120 Recommended Questions $\text{I} > \text{III} > \text{II} > \text{IV}$, $\text{I} > \text{II} > \text{III} > \text{IV}$... 3 Edit Delete
16896 $\text{Magnets } A \text{ and } B \text{ are geometrically similar but the magnetic moment of } A \text{ is twice that of } B. \text{ If } T_1 \text{ and } T_2 \text{ be the time periods of the oscillation when their like poles and unlike poles are kept together respectively, then } \frac{T_1}{T_2} \text{ will be:}$ 1 120 Recommended Questions $\frac{1}{3}$, $\frac{1}{2}$... 3 Edit Delete
16895 $\text{A magnet is parallel to a uniform magnetic field. If it is rotated by } 60^\circ, \text{ the work done is } 0.8 \text{ J. How much work is done in moving it } 30^\circ \text{ further?}$ 1 120 Recommended Questions $0.8 \times 10^7 \text{ ergs}$, $0.4 \text{ J}$... 1 Edit Delete
16894 $\text{If the work done in turning a magnet of magnetic moment } M \text{ by an angle of } 90^\circ \text{ from magnetic meridian is } n \text{ times the corresponding work done to turn it through an angle of } 60^\circ, \text{ then the value of } n \text{ is:}$ 1 120 Recommended Questions $\frac{1}{2}$, $2$... 2 Edit Delete
16893 $\text{A closely wound solenoid of } 2000 \text{ turns and area of cross-section } 1.5 \times 10^{-4} \text{ m}^2 \text{ carries a current of } 2.0 \text{ A.}$ $\text{It is suspended through its center and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field } 5 \times 10^{-2} \text{ tesla making an angle of } 30^\circ \text{ with the axis of the solenoid.}$ $\text{The torque on the solenoid will be:}$ 1 120 Recommended Questions $3 \times 10^{-3} \text{ Nm}$, $1.5 \times 10^{-3} \text{ Nm}$... 3 Edit Delete
16892 $\text{A short bar magnet of magnetic moment } 0.4 \text{ J/T is placed in a uniform magnetic field of } 0.16 \text{ T. The magnet is in stable equilibrium when the potential energy is:}$ $1. \ 0.064 \text{ J}$ $2. \ \text{zero}$ $3. \ -0.082 \text{ J}$ $4. \ -0.064 \text{ J}$ 1 120 Recommended Questions $0.064 \text{ J}$, $\text{zero}$... 4 Edit Delete
16891 $\text{The magnetic moment of a short dipole is } 100 \text{ A-m}^2. \text{ The magnetic induction in vacuum at } 1 \text{ m from the dipole on the axis of the dipole is:}$ 1 120 Recommended Questions $2 \times 10^{-5} \text{ T}$, $10^{-5} \text{ T}$... 1 Edit Delete
16890 $\text{A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in the equilibrium state. The energy required to rotate it by } 60^\circ \text{ is } W. \text{ Now the torque required to keep the magnet in this new position is:}$ 1 120 Recommended Questions $\frac{W}{\sqrt{3}}$, $\frac{\sqrt{3}W}{3}$... 2 Edit Delete
16889 $\text{The bar magnet } A \text{ of magnetic moment } M_A \text{ is found to oscillate at a frequency twice that of magnet } B \text{ of magnetic moment } M_B \text{ and the same moment of inertia when placed in a vibration magnetometer. We may say that:}$ 1 120 Recommended Questions $M_B = 8M_A$, $M_A = 4M_B$... 2 Edit Delete
16888 $\text{A short magnetic dipole is placed at the origin with its dipole movement directed along the } +x\text{-axis.}$ $\text{If magnetic field induction at a point } P(r, 0) \text{ is } B \hat{i},$ $\text{the magnetic field induction at point } Q(0, 2r) \text{ will be:}$ 1 120 Recommended Questions $-\frac{B}{16} \hat{i}$, $-\frac{B}{8} \hat{j}$... 1 Edit Delete
16887 $\text{Two short magnets of equal dipole moments } M \text{ are fastened perpendicularly at their centres (figure). The magnitude of the magnetic field at a distance } d \text{ from the centre on the bisector of the right angle is:}$ 1 120 Recommended Questions $\frac{\mu_0}{4\pi} \frac{M}{d^3}$, $\frac{\mu_0}{4\pi} \frac{M\sqrt{2}}{d^3}$... 3 Edit Delete
16886 $\text{Two magnets } A \text{ and } B \text{ are identical and these are arranged as shown in the figure. Their length is negligible in comparison to the separation between them. A magnetic needle is placed between the magnets at point } P \text{ which gets deflected through an angle } \theta \text{ under the influence of magnets. The ratio of distance } d_1 \text{ and } d_2 \text{ will be:}$ 1 120 Recommended Questions $(2 \tan \theta)^{\frac{1}{3}}$, $(2 \tan \theta)^{-\frac{1}{3}}$... 3 Edit Delete
16885 $\text{Given below are two statements:}$ $\text{Assertion (A): Magnetic flux linked with a closed surface is always zero.}$ $\text{Reason (R): Magnetic monopole does not exist.}$ 1 120 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
16884 $\text{Assume that the magnetic field of the earth is due to a small magnetic dipole,}$ $\text{placed at the centre of the earth (radius: } R).$ $\text{The magnetic field at the equator}$ $\text{is } B_e. \text{ The dipole moment of the dipole is:}$ 1 120 Recommended Questions $\frac{\pi}{\mu_0} \left( B_e R^3 \right)$, $\frac{2\pi}{\mu_0} \left( B_e R^3 \right)$... 3 Edit Delete
16883 $\text{The following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole. Which configuration has the highest net magnetic dipole moment?}$ 1 120 Recommended Questions $\text{Configuration 1}$, $\text{Configuration 2}$... 3 Edit Delete
16882 $\text{The magnetic field at a point } x \text{ on the axis of a small bar magnet is equal to the field at a point } y \text{ on the equator of the same magnet.}$ $\text{The ratio of the distances of } x \text{ and } y \text{ from the centre of the magnet is:}$ 1 120 Recommended Questions $2^{-3}$, $2^{-\frac{1}{3}}$... 4 Edit Delete
16881 $\text{A Gaussian surface is drawn enclosing the N-pole of a bar magnet. The net magnetic flux through the Gaussian surface will be:}$ $\text{(pole strength of N-pole is treated as positive and S-pole as negative)}$ 1 120 Recommended Questions $\text{positive.}$, $\text{negative.}$... 4 Edit Delete
16880 $\text{Two equal bar magnets are kept as shown in the figure. The direction of the resultant magnetic field, indicated by arrowhead at the point } P \text{ is: (approximately)}$ 1 120 Recommended Questions $\rightarrow$, $\nearrow$... 2 Edit Delete
16879 $\text{Two identical bar magnets are fixed with their centres at a distance } d \text{ apart.}$ $\text{A stationary charge } Q \text{ is placed at } P \text{ in between the gap of the two magnets}$ $\text{at a distance } D \text{ from the centre } O \text{ as shown in the figure.}$ 1 120 Recommended Questions $\text{zero.}$, $\text{directed along with } OP.$... 1 Edit Delete
16878 $\text{Two similar bar magnets } P \text{ and } Q, \text{ each of magnetic moment } M, \text{ are taken. If } P \text{ is cut along its axial line and } Q \text{ is cut along its equatorial line, all the four pieces obtained have:}$ 1 120 Recommended Questions $\text{equal pole strength}$, $\text{magnetic moment } \frac{M}{4}$... 3 Edit Delete
16877 $\text{Figure shows two small identical magnetic dipoles } a \text{ and } b \text{ of magnetic moments } M \text{ each, placed at a separation } 2d, \text{ with their axes perpendicular to each other. The magnetic field at the point } P \text{ midway between the dipoles is:}$ 1 120 Recommended Questions $\frac{2\mu_0 M}{4\pi d^3}$, $\frac{\mu_0 M}{4\pi d^3}$... 4 Edit Delete
16876 $\text{The unit of pole strength is:}$ 1 120 Recommended Questions $\text{Am}^2$, $\text{Am}$... 2 Edit Delete
16875 $\text{The magnetic moment of a bar magnet of length } L \text{ and area of cross-section } A \text{ is } M. \text{ If the magnet is cut into four identical parts each of length } L \text{ and area of cross-section } \frac{A}{4}, \text{ then the magnetic moment of each part is:}$ 1 120 Recommended Questions $\frac{M}{4}$, $\frac{M}{2}$... 1 Edit Delete
16874 $\text{A bar magnet of the magnetic moment } M \text{ is placed at right angles to a magnetic induction } B. \text{ If a force } F \text{ is experienced by each pole of the magnet, the length of the magnet will be:}$ 1 120 Recommended Questions $\frac{MB}{F}$, $\frac{BF}{M}$... 1 Edit Delete
16873 $\text{A long magnetic needle of length } 2L, \text{ magnetic moment } M \text{ and pole strength } m \text{ units is broken into two pieces at the middle. The magnetic moment and pole strength of each piece will be:}$ 1 120 Recommended Questions $\frac{M}{2}, \frac{m}{2}$, $M, \frac{m}{2}$... 3 Edit Delete
16872 $\text{Due to a small magnet, the intensity at a distance } x \text{ in the end-on position is } 9 \text{ gauss.}$ $\text{What will be the intensity at a distance } \frac{x}{2} \text{ on equatorial position?}$ 1 120 Recommended Questions $9 \text{ gauss}$, $4 \text{ gauss}$... 3 Edit Delete
16871 $\text{A bar magnet of length } l \text{ and magnetic dipole moment } M \text{ is bent in the form of an arc as shown in the figure. The new magnetic dipole moment will be:}$ 1 120 Recommended Questions $\frac{3M}{\pi}$, $\frac{2M}{l\pi}$... 1 Edit Delete
16870 $\text{A 100-turn coil of wire of size } 2 \text{ cm} \times 1.5 \text{ cm is suspended between the poles of a magnet producing a field of } 1 \text{ T, inside a galvanometer. Calculate the torque on the coil due to a current of } 0.1 \text{ A passing through the coil.}$ 1 120 Recommended Questions $3 \times 10^{-5} \text{ N-m}$, $30 \text{ N-m}$... 3 Edit Delete
16869 $\text{If a magnetic needle is made to vibrate in uniform field } H, \text{ then its time period is } T. \text{ If it vibrates in the field of intensity } 4H, \text{ its time period will be:}$ 1 120 Recommended Questions $2T$, $\frac{T}{2}$... 2 Edit Delete
16868 $\text{A bar magnet having a magnetic moment of } 2.0 \times 10^5 \text{ JT}^{-1} \text{ is placed along the direction of the uniform magnetic field of magnitude, } B = 14 \times 10^{-5} \text{ T.}$ $\text{The work done in rotating the magnet slowly through } 60^\circ \text{ from the direction of the field is:}$ 1 120 Recommended Questions $14 \text{ J}$, $8.4 \text{ J}$... 1 Edit Delete
16867 $\text{The unit of magnetic flux is:}$ $1.\ \text{Oersted}$ $2.\ \text{Gauss}$ $3.\ \text{Tesla}$ $4.\ \text{Maxwell}$ 1 120 Recommended Questions $\text{Oersted}$, $\text{Gauss}$... 4 Edit Delete
16866 $\text{Which one of the following is correct?}$ 1 120 Recommended Questions $\text{The magnetic field lines also represent the lines of force on a moving charged particle at every point.}$, $\text{The magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid.}$... 2 Edit Delete
16865 $\text{Two identical bar magnets are kept as shown in the figure. The direction of the resultant magnetic field, indicated by the arrowhead at the point } P \text{ is:}$ 1 120 Recommended Questions $\rightarrow$, $\nearrow$... 4 Edit Delete
16864 $\text{The magnetic lines of force inside a bar magnet are:}$ 1 120 Recommended Questions $\text{from the south to the north pole.}$, $\text{from the north to the south pole.}$... 1 Edit Delete
16863 $\text{Which of the following is the correct representation of magnetic field lines?}$ 1 120 Recommended Questions $(g), (c)$, $(d), (f)$... 4 Edit Delete
16862 $\text{The correct direction of the magnetic field in the given figures is shown by:}$ 1 120 Recommended Questions $1.$, $2.$... 4 Edit Delete
16861 $\text{A galvanometer of resistance, } G, \text{ is shunted by the resistance of } S \text{ ohm. How much resistance is to be put in series with the galvanometer to keep the main current in the circuit unchanged?}$ 1 119 Recommended Questions $\frac{G}{(S+G)}$, $\frac{S^2}{(S+G)}$... 4 Edit Delete
16860 $\text{If an ammeter } A \text{ reads } 2 \text{ A and the voltmeter } V \text{ reads } 20 \text{ V, what is the value of resistance } R? \text{ (Assuming finite resistances of ammeter and voltmeter)}$ 1 119 Recommended Questions $\text{Exactly } 10 \, \Omega$, $\text{Less than } 10 \, \Omega$... 3 Edit Delete
16859 $\text{In an ammeter, } 0.2\% \text{ of the main current passes through the galvanometer. If the resistance of the galvanometer is } G, \text{ the resistance of the ammeter will be:}$ 1 119 Recommended Questions $\frac{1}{499}G$, $\frac{499}{500}G$... 3 Edit Delete
16858 $\text{A galvanometer having a resistance of } 8 \text{ ohms is shunted by a wire of resistance of } 2 \text{ ohms. If the total current is } 1 \text{ A, the part of it passing through the shunt will be:}$ $1.\ 0.25\ \text{A}$ $2.\ 0.8\ \text{A}$ $3.\ 0.2\ \text{A}$ $4.\ 0.5\ \text{A}$ 1 119 Recommended Questions $0.25\ \text{A}$, $0.8\ \text{A}$... 2 Edit Delete
16857 $\text{On connecting a shunt of } 10 \, \Omega, \text{ the deflection in a moving coil galvanometer}$ $\text{falls from } 40 \text{ divisions to } 6 \text{ divisions. What is the resistance of the}$ $\text{galvanometer?}$ 1 119 Recommended Questions $\frac{120}{3} \, \Omega$, $\frac{30}{7} \, \Omega$... 3 Edit Delete
16856 $\text{When a } 12 \, \Omega \text{ resistor is connected in parallel with a moving coil galvanometer, its deflection reduces from } 50 \text{ divisions to } 10 \text{ divisions. What will be the resistance of the galvanometer?}$ $1. \, 24 \, \Omega$ $2. \, 36 \, \Omega$ $3. \, 48 \, \Omega$ $4. \, 60 \, \Omega$ 1 119 Recommended Questions $24 \, \Omega$, $36 \, \Omega$... 3 Edit Delete
16855 $\text{A galvanometer of resistance } 240 \, \Omega \text{ allows only } 4\% \text{ of the main current after connecting a shunt resistance. What is the value of shunt resistance?}$ 1 119 Recommended Questions $10 \, \Omega$, $20 \, \Omega$... 1 Edit Delete
16854 $\text{What properties will a galvanometer that is acting as a voltmeter have?}$ 1 119 Recommended Questions $\text{high resistance in series with its coil}$, $\text{low resistance in parallel with its coil}$... 1 Edit Delete
16853 $\text{A milliammeter of } 10 \text{ mA has a coil resistance of } 1 \, \Omega. \text{ To use it as an ammeter of range } 1 \, \text{A, the required shunt must have a resistance of:}$ 1 119 Recommended Questions $\frac{1}{101} \, \Omega$, $\frac{1}{100} \, \Omega$... 3 Edit Delete
16852 $\text{A galvanometer having a coil resistance of } 60 \, \Omega \text{ shows full-scale deflection when a current of } 1.0 \, \text{A passes through it. How can we convert it into an ammeter capable of reading currents up to } 5.0 \, \text{A?}$ 1 119 Recommended Questions $\text{putting in series resistance of } 240 \, \Omega.$, $\text{putting in parallel resistance of } 240 \, \Omega.$... 4 Edit Delete
16851 $\text{A galvanometer with a resistance of } 36 \, \Omega \text{ is changed into an ammeter by using a shunt of } 4 \, \Omega. \text{ The fraction } f_0 \text{ of total current passing through the galvanometer will be:}$ 1 119 Recommended Questions $\frac{1}{40}$, $\frac{1}{4}$... 4 Edit Delete
16850 $\text{The galvanometer of resistance } 80 \, \Omega \text{ deflects a full scale for a potential of } 20 \, \text{mV.}$ $\text{How much resistance is required for a voltmeter to deflect a full scale of } 5 \, \text{V to be made using this galvanometer?}$ 1 119 Recommended Questions $\text{resistance of } 19.92 \, \text{k} \Omega \text{ parallel to the galvanometer}$, $\text{resistance of } 19.92 \, \text{k} \Omega \text{ in series with the galvanometer}$... 2 Edit Delete
16849 $\text{A galvanometer has a coil resistance of } 100 \, \Omega \text{ and gives a full-scale deflection for } 30 \, \text{mA of current. If it is to work as a voltmeter in the } 30 \, \text{V range, how much resistance does it require to be added?}$ 1 119 Recommended Questions $900 \, \Omega$, $1800 \, \Omega$... 1 Edit Delete
16848 $\text{The current sensitivity of a galvanometer can be increased by:}$ $\text{A. decreasing the number of turns.}$ $\text{B. increasing the magnetic field.}$ $\text{C. decreasing the area of the coil.}$ $\text{D. decreasing the torsional constant of the spring.}$ $\text{Choose the most appropriate answer from the options given below:}$ 1 119 Recommended Questions $(\text{B}) \text{ and } (\text{C}) \text{ only}$, $(\text{C}) \text{ and } (\text{D}) \text{ only}$... 4 Edit Delete
16847 $\text{What is the relation between voltage sensitivity } (\sigma_v) \text{ and current sensitivity } (\sigma_i) \text{ of a moving coil galvanometer? (Resistance of Galvanometer } = G)$ 1 119 Recommended Questions $\frac{\sigma_i}{G} = \sigma_v$, $\frac{\sigma_v}{G} = \sigma_i$... 1 Edit Delete
16846 $\text{What happens when the number of turns in a galvanometer is doubled?}$ 1 119 Recommended Questions $\text{The voltage sensitivity becomes double.}$, $\text{The current sensitivity becomes double.}$... 2 Edit Delete
16845 $\text{The current sensitivity of a moving coil galvanometer is } 5 \text{ div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is } 20 \text{ div/V. How much is the resistance of the galvanometer?}$ 1 119 Recommended Questions $40 \, \Omega$, $25 \, \Omega$... 3 Edit Delete
16844 $\text{By which relation is the deflection of the coil } \theta \text{ related to the electrical current } i \text{ in a moving coil galvanometer?}$ 1 119 Recommended Questions $i \propto \tan \theta$, $i \propto \theta$... 2 Edit Delete
16843 $\text{Which among the following options needs to be decreased to increase the sensitivity of a moving coil galvanometer?}$ 1 119 Recommended Questions $\text{the number of turns in the coil.}$, $\text{the area of the coil.}$... 4 Edit Delete
16842 $\text{When will the current sensitivity of a moving coil galvanometer be high?}$ $\left( N = \text{number of turns}, B = \text{magnetic field}, A = \text{area of coil, and } C = \text{Torsional constant of spring} \right)$ 1 119 Recommended Questions $N \text{ is small}$, $B \text{ is small}$... 4 Edit Delete
16841 $\text{A square loop with a side } l \text{ is held in a uniform magnetic field } B, \text{ such that its plane making an angle } \alpha \text{ with } B. \text{ A current } i \text{ flows through the loop. What will be the torque experienced by the loop in this position?}$ 1 119 Recommended Questions $Bil^2$, $Bil^2 \sin \alpha$... 3 Edit Delete
16840 $\text{A current } I \text{ is carried by an elastic circular wire of length } L. \text{ It is placed in a uniform magnetic field } B \text{ (out of paper) with its plane perpendicular to } B\text{'s direction. What will happen to the wire?}$ 1 119 Recommended Questions $\text{No force}$, $\text{A stretching force}$... 2 Edit Delete
16839 $\text{Two insulated rings, one of a slightly smaller diameter than the other, are suspended along their common diameter as shown. Initially, the planes of the rings are mutually perpendicular. What happens when a steady current is set up in each of them?}$ 1 119 Recommended Questions $\text{the two rings rotate into a common plane.}$, $\text{the inner ring oscillates about its initial position.}$... 1 Edit Delete
16838 $\text{A closed-loop (of any shape) carrying current lies in the } x-y \text{ plane.}$ $\text{What happens when a uniform magnetic field } B \text{ is present in the region such that the loop experiences zero force?}$ 1 119 Recommended Questions $B \text{ acts along the } x\text{-axis}$, $B \text{ acts along the } y\text{-axis}$... 4 Edit Delete
16837 $\text{If a square loop } ABCD \text{ carrying a current } i \text{ is placed near and coplanar with a long straight conductor } XY \text{ carrying a current } I, \text{ what will be the net force on the loop?}$ 1 119 Recommended Questions $\frac{\mu_0 I i}{2 \pi}$, $\frac{2 \mu_0 I i L}{3 \pi}$... 4 Edit Delete
16836 $\text{A magnetic dipole is under the influence of two magnetic fields. The angle between the field directions is } 60^\circ, \text{ and one of the fields has a magnitude of } 1.2 \times 10^{-2} \text{ T. If the dipole comes to stable equilibrium at an angle of } 15^\circ \text{ with this field, what is the magnitude of the other field?}$ $\text{[Given: } \sin 15^\circ = 0.26]$ 1 119 Recommended Questions $7.29 \times 10^{-3} \text{ T}$, $4.39 \times 10^{-3} \text{ T}$... 2 Edit Delete
16835 $\text{A coil in the shape of an equilateral triangle of side } l \text{ is suspended between the pole pieces of a permanent magnet such that } \vec{B} \text{ is in the plane of the coil. If due to a current } i \text{ in the triangle, a torque } \tau \text{ acts on it, the side } l \text{ of the triangle will be:}$ 1 119 Recommended Questions $\frac{2}{\sqrt{3}} \left( \frac{\tau}{Bi} \right)$, $\frac{1}{\sqrt{3}} \frac{\tau}{Bi}$... 3 Edit Delete
16834 $\text{A circular loop with a radius of } 20 \text{ cm is placed in a uniform magnetic field } B = 2 \text{ T in the } XY \text{ plane as shown in the figure. If the loop carries a current of } i = 1 \text{ A, then the magnitude of torque acting on the loop will be:}$ 1 119 Recommended Questions $0.25 \text{ N-m}$, $5.2 \text{ N-m}$... 1 Edit Delete
16833 $\text{A current-carrying closed loop in the form of a right isosceles triangle } ABC \text{ is placed in a uniform magnetic field acting along with } AB. \text{ If the magnetic force on the arm } BC \text{ is } F, \text{ then what is the force on the arm } AC?$ 1 119 Recommended Questions $-F$, $F$... 1 Edit Delete
16832 $\text{A closely wound solenoid of } 2000 \text{ turns and an area of cross-section of } 1.5 \times 10^{-4} \text{ m}^2 \text{ carries a current of } 2.0 \text{ A.}$ $\text{It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field of } 5 \times 10^{-2} \text{ Tesla, making an angle of } 30^\circ \text{ with the axis of the solenoid.}$ $\text{What will be the torque on the solenoid?}$ 1 119 Recommended Questions $1.5 \times 10^{-3} \text{ Nm}$, $1.5 \times 10^{-2} \text{ Nm}$... 2 Edit Delete
16831 $\text{A closed-loop } PQRS \text{ carrying a current is placed in a uniform magnetic field.}$ $\text{If the magnetic forces on segments } PS, SR, \text{ and } RQ \text{ are } F_1, F_2 \text{ and } F_3$ $\text{respectively, and are in the plane of the paper and along the directions shown,}$ $\text{then which of the following forces acts on the segment } QP?$ 1 119 Recommended Questions $F_3 - F_1 - F_2$, $\sqrt{(F_3 - F_1)^2 + F_2^2}$... 2 Edit Delete
16830 $\text{A square current-carrying loop is suspended in a uniform magnetic field acting in the plane of the loop. If the force on one arm of the loop is } \vec{F}, \text{ what will be the net force on the remaining three arms of the loop?}$ 1 119 Recommended Questions $3\vec{F}$, $-\vec{F}$... 2 Edit Delete
16829 $\text{What is the magnetic dipole moment of the given loop?}$ 1 119 Recommended Questions $\frac{5}{2} \pi R^2 I$, $3 \pi R^2 I$... 1 Edit Delete
16828 $\text{A wire of length } l \text{ carrying current } i \text{ is folded to form a circular coil of } N \text{ turns.}$ $\text{What should be the value of } N \text{ to have the maximum value of the magnetic}$ $\text{moment in the coil?}$ 1 119 Recommended Questions $1$, $4$... 1 Edit Delete
16827 $\text{The ratio of the radii of two circular coils is } 1 : 2. \text{ The ratio of currents in the respective coils such that the same magnetic moment is produced at the centre of each coil is:}$ 1 119 Recommended Questions $4 : 1$, $2 : 1$... 1 Edit Delete
16826 $\text{In a hydrogen atom, the electron makes } 6.6 \times 10^{15} \text{ rev/sec around the nucleus in an orbit of radius } 0.528 \, \text{\AA}. \text{ What will (A-m}^2\text{) its magnetic moment be?}$ 1 119 Recommended Questions $1 \times 10^{-15}$, $1 \times 10^{-10}$... 3 Edit Delete
16825 $\text{The two parts of the loop are circles of radii } 2a \text{ and } a, \text{ respectively, and carry the same current } i \text{ as shown in the given figure. What is the magnitude of the dipole moment of the current loop?}$ 1 119 Recommended Questions $5\pi a^2 \hat{i}$, $4\pi a^2 \hat{i}$... 3 Edit Delete
16824 $\text{What is the magnetic moment of the following current loop?}$ $\begin{array}{c} \text{3 m} \\ \text{90}^\circ \\ \end{array}$ $\begin{array}{c} \text{2 A} \\ \text{4 m} \\ \end{array}$ 1 119 Recommended Questions $24 \ \text{Am}^2$, $12 \ \text{Am}^2$... 2 Edit Delete
16823 $\text{A wire of length } L \text{ meters carrying a current of } I \text{ ampere is bent in the form of a circle. What is its magnetic moment?}$ 1 119 Recommended Questions $\frac{IL^2}{4} \text{ A-m}^2$, $\frac{I \times \pi L^2}{4} \text{ A-m}^2$... 4 Edit Delete
16822 $\text{If a charged particle (charge } q \text{) is moving in a circle of radius } R \text{ at a uniform speed } v, \text{ then the value of its associated magnetic moment } \mu \text{ will be:}$ 1 119 Recommended Questions $\frac{qvR}{2}$, $qvR^2$... 1 Edit Delete
16821 $\text{Two particles each of mass } m \text{ and charge } q \text{ are attached to the two ends of a light rigid rod of length } 2R. \text{ The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. What is the ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod?}$ 1 119 Recommended Questions $\frac{q}{2m}$, $\frac{q}{m}$... 1 Edit Delete
16820 $\text{A charge } Q \text{ is uniformly distributed on a ring of radius } R \text{ made of an insulating material.}$ $\text{If the ring rotates about the axis passing through its centre and normal to the plane of the ring with constant angular speed } \omega,$ $\text{then what will be the magnitude of the magnetic moment of the ring?}$ 1 119 Recommended Questions $Q \omega R^2$, $\frac{1}{2} Q \omega R^2$... 2 Edit Delete
16819 $\text{If the planes of two identical concentric coils are perpendicular and the magnetic moment of each coil is } M, \text{ then the resultant magnetic moment of the two-coil system will be:}$ 1 119 Recommended Questions $M$, $\sqrt{2}M$... 2 Edit Delete
16818 $\text{Three long, straight, and parallel wires carrying currents of } 30 \text{ A, } 10 \text{ A, and } 20 \text{ A}$ $\text{in } P, Q, \text{ and } R, \text{ respectively, are arranged as shown in the figure.}$ $\text{What is the force experienced by a } 10 \text{ cm length of wire } Q?$ 1 119 Recommended Questions $1.4 \times 10^{-4} \text{ N towards the right}$, $1.4 \times 10^{-4} \text{ N towards the left}$... 1 Edit Delete
16817 $\text{An arrangement of three parallel straight wires placed perpendicular to the plane of paper carrying the same current in the same direction is shown in the figure. The magnitude of force per unit length on the middle wire } B \text{ is given by:}$ 1 119 Recommended Questions $\frac{\mu_0 i^2}{2 \pi d}$, $\frac{2 \mu_0 i^2}{\pi d}$... 4 Edit Delete
16816 $\text{As indicated, a long, straight conductor } XY \text{ carrying a current } i_1 \text{ is placed antiparallel to a conductor } AB \text{ of length } l \text{ carrying a current } i_2. \text{ How much of a force is acting on } AB?$ 1 119 Recommended Questions $\frac{\mu_0 i_1 i_2}{\mu_0 i_1 i_2}$, $\frac{\pi}{\mu_0 i_1 i_2}$... 2 Edit Delete
16815 $\text{A long wire } A \text{ carries a current of } 10 \text{ A. Another long wire } B, \text{ which is parallel to } A \text{ and separated by } 0.1 \text{ m from } A, \text{ carries a current of } 5 \text{ A, in the opposite direction to that in } A. \text{ What is the magnitude and nature of the force experienced per unit length of } B?$ $\left( \mu_0 = 4\pi \times 10^{-7} \text{ weber/(amp-m)} \right)$ 1 119 Recommended Questions $\text{Repulsive force of } 10^{-4} \text{ N/m}$, $\text{Attractive force of } 10^{-4} \text{ N/m}$... 1 Edit Delete
16814 $\text{A rectangular loop carrying a current } I_1, \text{ is situated near a long straight wire carrying a steady current } I_2. \text{ If the wire is parallel to one of the sides of the loop and is in the plane of the loop as shown in the figure, then the current loop will:}$ 1 119 Recommended Questions $\text{move away from the wire.}$, $\text{move towards the wire.}$... 2 Edit Delete
16813 $\text{What will happen if two thin, long parallel wires separated by a distance } d \text{ carry current } i \text{ in the same direction?}$ 1 119 Recommended Questions $\text{attract each other with a force per unit length of } \frac{\mu_0 i^2}{2 \pi d^2}.$, $\text{repel each other with a force per unit length of } \frac{\mu_0 i^2}{2 \pi d^2}.$... 3 Edit Delete
16812 $\text{Two long parallel copper wires carry currents of } 5 \text{ A each in opposite directions. If the wires are separated by a distance of } 0.5 \text{ m, then the force between the two wires will be:}$ 1 119 Recommended Questions $10^{-5} \text{ N, attractive}$, $10^{-5} \text{ N, repulsive}$... 2 Edit Delete
16811 $\text{The figure depicts a cross-section of a large metal sheet with an electric current flowing along its surface. The current in a } dl\text{-width strip is } (K dl), \text{ where } K \text{ is a constant. What is the magnetic field at a point } P \text{ and at a distance } x \text{ from the metal strips?}$ 1 119 Recommended Questions $\frac{1}{2} \mu_0 K x$, $\mu_0 K$... 3 Edit Delete
16810 $\text{Two identical current-carrying coaxial loops carry current } I \text{ in an opposite sense. A simple amperian loop passes through both of them once. Calling the loop as } C,$ $\begin{array}{ll} (a) & \oint \mathbf{B} \cdot d\mathbf{l} = \pm 2\mu_0 I \\ (b) & \text{the value of } \oint \mathbf{B} \cdot d\mathbf{l} \text{ is independent of the sense of } C. \\ (c) & \text{there may be a point on } C \text{ where } \mathbf{B} \text{ and } d\mathbf{l} \text{ are perpendicular.} \\ (d) & \mathbf{B} \text{ vanishes everywhere on } C. \end{array}$ $\text{Which of the above statements is correct?}$ 1 119 Recommended Questions $(a) \text{ and } (b)$, $(a) \text{ and } (c)$... 3 Edit Delete
16809 $\text{Three infinitely long conductors carrying currents } I_1, I_2 \text{ and } I_3 \text{ lie perpendicular to the plane of the paper as shown below.}$ $\text{If the value of the integral } \oint \vec{B} \cdot \vec{dl} \text{ for the loops } C_1, C_2, \text{ and } C_3 \text{ are } 2\mu_0, 4\mu_0 \text{ and } \mu_0 \text{ in the units of N/A, respectively, then:}$ 1 119 Recommended Questions $I_1 = 3\text{A into the paper}$, $I_2 = 3\text{A out of the paper}$... 1 Edit Delete
16808 $\text{Consider six wires with the same current flowing through them as they enter or exit the page.}$ $\text{Rank the magnetic field's line integral counterclockwise around each loop,}$ $\text{going from most positive to most negative.}$ 1 119 Recommended Questions $B > C > D > A$, $B > C = D > A$... 3 Edit Delete
16807 $\text{A long straight wire of radius } a \text{ carries a steady current } I. \text{ The current is uniformly distributed over its cross-section. The ratio of the magnetic fields } B \text{ and } B' \text{ at radial distances } \frac{a}{2} \text{ and } 2a \text{ respectively, from the axis of the wire, is:}$ 1 119 Recommended Questions $\frac{1}{2}$, $1$... 2 Edit Delete
16806 $\text{A long solenoid has 800 turns per metre of the length of the solenoid. A current of } 1.6 \text{ A flows through it. What is the magnetic induction at the end of the solenoid on its axis?}$ 1 119 Recommended Questions $16 \times 10^{-4} \text{ T}$, $8 \times 10^{-4} \text{ T}$... 2 Edit Delete
16805 $\text{What is a representation of the magnetic field caused by a straight conductor}$ $\text{with a uniform cross-section and a steady current of radius } a?$ 1 119 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
16804 $\text{If a long hollow copper pipe carries a direct current along its length, then the magnetic field associated with the current will be:}$ 1 119 Recommended Questions $\text{only inside the pipe}$, $\text{only outside the pipe}$... 2 Edit Delete
16803 $\text{If an } i \text{ A current flows through an infinitely long, straight, thin-walled tube, what will be the magnetic induction at any point within the tube?}$ 1 119 Recommended Questions $\text{infinite}$, $\text{zero}$... 2 Edit Delete
16802 $\text{Magnetic field at the outer surface of long hollow cylindrical shells of radius } R$ $\text{and carrying current } I \text{ is } B. \text{ What is the magnetic field at a distance of } \frac{3R}{2}$ $\text{ from the axis of the cylindrical shell?}$ 1 119 Recommended Questions $\frac{B}{2}$, $2B$... 4 Edit Delete
16801 $\text{In a current-carrying long solenoid, the field produced does not depend upon:}$ 1 119 Recommended Questions $\text{Number of turns per unit length}$, $\text{Current flowing}$... 3 Edit Delete
16800 $\text{A long solenoid carrying a current produces a magnetic field } B \text{ along its axis.}$ $\text{If the current is doubled and the number of turns per cm is halved, what will be the new value of the magnetic field?}$ 1 119 Recommended Questions $\frac{B}{2}$, $B$... 2 Edit Delete
16799 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{If a proton and an } \alpha\text{-particle enters a uniform magnetic field perpendicularly with the same speed, then the time period of revolution of the } \alpha\text{-particle is double that of a proton.}$ $\text{Reason (R):}$ $\text{In a magnetic field, the time period of revolution of a charged particle is directly proportional to mass.}$ 1 119 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
16798 $\text{A charged particle is projected in a uniform magnetic field at an angle of } 45^\circ \text{ to the magnetic field.}$ $\text{If the circumference of the helical path followed by it is } 2 \text{ cm, then the pitch of the helix will be:}$ 1 119 Recommended Questions $1 \text{ cm}$, $\sqrt{2} \text{ cm}$... 3 Edit Delete
16797 $\text{Perpendicularly, an electron and a proton enter a magnetic field. Both have the same amount of kinetic energy. Which of the following statements is correct?}$ 1 119 Recommended Questions $\text{Trajectory of electron is less curved}$, $\text{Trajectory of proton is less curved}$... 2 Edit Delete
16796 $\text{When a positively charged particle moves in an } x-y \text{ plane, its path abruptly changes due to the presence of electric and/or magnetic fields beyond } P. \text{ The curved path is depicted in the } x-y \text{ plane and is discovered to be noncircular. Which of the following combinations is true?}$ 1 119 Recommended Questions $\vec{E} = 0; \ \vec{B} = b\hat{i} + c\hat{k}$, $\vec{E} = a\hat{i}; \ \vec{B} = c\hat{k} + a\hat{i}$... 2 Edit Delete
16795 $\text{When a proton is released from rest in a room, it starts with an initial acceleration } a_0 \text{ towards the east.}$ $\text{When it is projected towards the north with a speed of } v_0, \text{ it moves with an initial acceleration of } 3a_0 \text{ towards the east.}$ $\text{What are the electric and magnetic fields in the room?}$ 1 119 Recommended Questions $\frac{M a_0}{e} \text{ west, } \frac{M a_0}{e v_0} \text{ up}$, $\frac{M a_0}{e} \text{ west, } \frac{2M a_0}{e v_0} \text{ down}$... 3 Edit Delete
16794 $\text{If charge } -Q \text{ is moving vertically upwards, then what will be the force on the charged particle if it enters a magnetic field that is pointed towards the south?}$ $1. \text{ North}$ $2. \text{ South}$ $3. \text{ East}$ $4. \text{ West}$ 1 119 Recommended Questions $\text{North}$, $\text{South}$... 4 Edit Delete
16793 $\text{In a mass spectrometer used for measuring the masses of ions, the ions are initially accelerated by an electric potential } V \text{ and then made to describe semi-circular paths of radius } R \text{ using a magnetic field } B. \text{ If } V \text{ and } B \text{ are kept constant, the ratio of } \left( \frac{\text{Charge on the ion}}{\text{Mass of the ion}} \right) \text{ will be proportional to:}$ 1 119 Recommended Questions $\frac{1}{R}$, $\frac{1}{R^2}$... 2 Edit Delete
16792 $\text{A proton and an } \alpha\text{-particle enter a uniform magnetic field perpendicularly at the same speed. If a proton takes } 25 \, \mu s \text{ to make } 5 \text{ revolutions, then the periodic time for the } \alpha\text{-particle will be:}$ $1. \, 50 \, \mu s$ $2. \, 25 \, \mu s$ $3. \, 10 \, \mu s$ $4. \, 5 \, \mu s$ 1 119 Recommended Questions $50 \, \mu s$, $25 \, \mu s$... 3 Edit Delete
16791 $\text{A particle having a mass of } 10^{-2} \text{ kg carries a charge of } 5 \times 10^{-8} \text{ C.}$ $\text{The particle is given an initial horizontal velocity of } 10^5 \text{ ms}^{-1} \text{ in the presence of an}$ $\text{electric field } \vec{E} \text{ and magnetic field } \vec{B}. \text{ How can we keep the particles moving in a horizontal direction?}$ 1 119 Recommended Questions $\vec{B} \text{ should be perpendicular to the direction of velocity and } \vec{E} \text{ should be along the direction of velocity.}$, $\text{Both } \vec{B} \text{ and } \vec{E} \text{ should be along the direction of velocity.}$... 3 Edit Delete
16790 $\text{If an electron of velocity } 2\hat{i} + 3\hat{j} \text{ is subjected to a magnetic field of } 4\hat{k}:$ 1 119 Recommended Questions $\text{the speed will change.}$, $\text{the direction will change.}$... 2 Edit Delete
16789 $\text{A metallic rod of mass per unit length of } 0.5 \text{ kgm}^{-1} \text{ is lying horizontally on a smooth inclined plane which makes an angle of } 30^\circ \text{ with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction of } 0.25 \text{ T is acting on it in the vertical direction. What is the current flowing through the rod to keep it stationary?}$ 1 119 Recommended Questions $7.14 \text{ A}$, $5.98 \text{ A}$... 4 Edit Delete
16788 $\text{A particle of charge } q \text{ and mass } m \text{ is moving along the } x\text{-axis with a velocity of } v \text{ and enters a region of electric field } E \text{ and magnetic field } B \text{ as shown in the figure below. For which figure is the net force on the charge zero?}$ 1 119 Recommended Questions $1.$, $2.$... 2 Edit Delete
16787 $\text{A charged particle is projected through a region in a gravity-free space. If it passes through the region with constant speed, then the region may have:}$ $1. \vec{E} = 0, \vec{B} \neq 0$ $2. \vec{E} \neq 0, \vec{B} \neq 0$ $3. \vec{E} \neq 0, \vec{B} = 0$ $4. \text{Both (1) \& (2)}$ 1 119 Recommended Questions $\vec{E} = 0, \vec{B} \neq 0$, $\vec{E} \neq 0, \vec{B} \neq 0$... 4 Edit Delete
16786 $\text{The dots in the figure depict a magnetic field that is perpendicular to the plane of the paper and emanates from it.}$ $\text{The trajectory of a particle in the plane of the paper is depicted by the curve } ABC.\text{ What exactly is the particle?}$ 1 119 Recommended Questions $\text{Proton.}$, $\text{Electron.}$... 1 Edit Delete
16785 $\text{A neutron, a proton, an electron and an } \alpha\text{-particle enter a region of the uniform magnetic field with the same velocity.}$ $\text{The magnetic field is perpendicular and directed into the plane of the paper.}$ $\text{The tracks of the particles are labelled in the figure.}$ $\text{Which track will the } \alpha\text{-particle follow?}$ 1 119 Recommended Questions $A$, $B$... 3 Edit Delete
16784 $\text{Ionized hydrogen atoms and } \alpha\text{-particles with the same momenta enter perpendicular to a constant magnetic field, } B. \text{ The ratio of their path radii } r_H : r_\alpha \text{ will be:}$ 1 119 Recommended Questions $1 : 4$, $2 : 1$... 2 Edit Delete
16783 $\text{A particle with charge } q, \text{ moving with a momentum } p, \text{ enters a uniform magnetic field normally.}$ $\text{The magnetic field has magnitude } B \text{ and is confined to a region of width } d, \text{ where } d < \frac{p}{Bq}. \text{ The particle is deflected by an angle } \theta \text{ in crossing the field, then:}$ 1 119 Recommended Questions $\sin \theta = \frac{Bqd}{p}$, $\sin \theta = \frac{p}{Bqd}$... 1 Edit Delete
16782 $\text{When a charged particle with velocity } \vec{v} \text{ is subjected to an induction magnetic field } \vec{B}, \text{ the force on it is non-zero. What does this imply?}$ 1 119 Recommended Questions $\text{Angle between } \vec{v} \text{ and } \vec{B} \text{ is necessarily } 90^\circ.$, $\text{Angle between } \vec{v} \text{ and } \vec{B} \text{ can have any value other than } 90^\circ.$... 3 Edit Delete
16781 $\text{Given below are two statements:}$ $\text{Statement I:}$ \text{The electric force changes the speed of the charged particle and hence changes its kinetic energy: whereas the magnetic force does not change the kinetic energy of the charged particle.}$ $\text{Statement II:}$ \text{The electric force accelerates the positively charged particle perpendicular to the direction of the electric field. The magnetic force accelerates the moving charged particle along the direction of the magnetic field.}$ 1 119 Recommended Questions $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... 3 Edit Delete
16780 $\text{An electron is moving in a circular path under the influence of a transverse magnetic field of } 3.57 \times 10^{-2} \text{ T.}$ $\text{If the value of } \frac{e}{m} \text{ is } 1.76 \times 10^{11} \text{ C/kg,}$ $\text{what will be the frequency of revolution of the electron?}$ 1 119 Recommended Questions $1 \text{ GHz}$, $100 \text{ MHz}$... 1 Edit Delete
16779 $\text{A current-carrying wire is placed in a uniform magnetic field in the shape of the curve } y = \alpha \sin\left(\frac{\pi x}{L}\right), 0 \leq x \leq 2L. \text{ What will be the force acting on the wire?}$ 1 119 Recommended Questions $\frac{iBL}{\pi}$, $iBL\pi$... 3 Edit Delete
16778 $\text{The magnetic force acting on a charged particle of charge } -2 \, \mu\text{C} \text{ in a magnetic field of } 2 \, \text{T acting in the } y\text{-direction, when the particle velocity is } (2\hat{i} + 3\hat{j}) \times 10^6 \, \text{ms}^{-1} \text{ is:}$ 1 119 Recommended Questions $8 \, \text{N in } -z\text{-direction.}$, $4 \, \text{N in the } z\text{-direction.}$... 1 Edit Delete
16777 $\text{A beam of electrons passes un-deflected through mutually perpendicular electric and magnetic fields. Where do the electrons move if the electric field is switched off and the same magnetic field is maintained?}$ 1 119 Recommended Questions $\text{in an elliptical orbit.}$, $\text{in a circular orbit.}$... 2 Edit Delete
16776 $\text{Moving perpendicular to field } B, \text{ a proton and an alpha particle both enter an area of uniform magnetic field } B. \text{ If the kinetic energy of the proton is } 1 \text{ MeV and the radius of the circular orbits for both particles is equal, the energy of the alpha particle will be:}$ 1 119 Recommended Questions $4 \text{ MeV}$, $0.5 \text{ MeV}$... 4 Edit Delete
16775 $\text{A charged particle enters perpendicular to a uniform magnetic field. Which of the following statements is true for the charged particle?}$ 1 119 Recommended Questions $\text{kinetic energy changes}$, $\text{kinetic energy remains constant}$... 2 Edit Delete
16774 $\text{A particle of charge } +q \text{ and mass } m \text{ moving under the influence of a uniform electric field } \vec{E}\hat{i} \text{ and a uniform magnetic field } B\hat{k} \text{ follows a trajectory from } P \text{ to } Q \text{ as shown in the figure.}$ $\text{The velocities at } P \text{ and } Q \text{ are } v\hat{i} \text{ and } -2v\hat{j} \text{ respectively.}$ $\text{Which of the following statement(s) is/are correct?}$ 1 119 Recommended Questions $E = \frac{3}{4} \frac{mv^2}{qa}.$, $\text{Rate of work done by electric field at } P \text{ is } \frac{3}{4} \frac{mv^3}{a}.$... 4 Edit Delete
16773 $\text{What is the result of an electric charge in uniform motion?}$ 1 119 Recommended Questions $\text{an electric field only.}$, $\text{a magnetic field only.}$... 3 Edit Delete
16772 $\text{A particle of mass } m, \text{ charge } Q, \text{ and kinetic energy } T \text{ enters a transverse uniform magnetic field of induction } \vec{B}. \text{ What will be the kinetic energy of the particle after seconds?}$ 1 119 Recommended Questions $3T$, $2T$... 3 Edit Delete
16771 $\text{Given below are two statements:}$ $\text{Assertion (A): Magnetic field due to an infinite straight conductor varies inversely as the distance from it.}$ $\text{Reason (R): The magnetic field at the center of the circular coil is zero.}$ 1 119 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
16770 $\text{A cell is connected between the points } A \text{ and } C \text{ of a circular conductor } ABCD \text{ of centre } O \text{ with an angle of } AOC = 60^\circ.$ $\text{If } B_1 \text{ and } B_2 \text{ are the magnitudes of the magnetic fields at } O \text{ due to the currents in } ABC \text{ and } ADC \text{ respectively, the ratio } B_1 : B_2 \text{ will be:}$ 1 119 Recommended Questions $0.2$, $6$... 3 Edit Delete
16769 $\text{Two straight horizontal parallel wires carry the same current in the same direction, and } d \text{ is the distance between them. You are given a small magnetic needle that is freely suspended. Which of the following positions will have the needle's orientation independent of the magnitude of the current in the wires?}$ 1 119 Recommended Questions $\text{At a distance } \frac{d}{2} \text{ from any of the wires in any plane.}$, $\text{At a distance } \frac{d}{3} \text{ from any of the wires in the horizontal plane.}$... 4 Edit Delete
16768 $\text{An electron and a proton are revolving around a common centre } O \text{ in two coplanar circular paths as shown in the figure with a time period of rotation of 1 s and 2 s, respectively. What will be the net magnetic field at } O?$ 1 119 Recommended Questions $\frac{\mu_0 e}{\pi} \text{ tesla}$, $\frac{\mu_0 e}{2} \text{ tesla}$... 2 Edit Delete
16767 $\text{Two circular coils 1 and 2 are made from the same wire but the radius of the 1}^{\text{st}} \text{ coil is twice that of the 2}^{\text{nd}} \text{ coil. What is the ratio of the potential difference applied across them so that the magnetic field at their centres is the same?}$ $1.\ 3$ $2.\ 4$ $3.\ 6$ $4.\ 2$ 1 119 Recommended Questions $3$, $4$... 2 Edit Delete
16766 $\text{If the current is flowing in the south direction along a power line, then what will be the direction of the magnetic field above the power line (neglecting the earth's field)?}$ 1 119 Recommended Questions $\text{South}$, $\text{East}$... 4 Edit Delete
16765 $\text{An infinitely long straight conductor is bent into the shape as shown in the figure. It carries a current of } i \text{ amperes and the radius of the circular loop is } r \text{ metres. What will be the magnetic induction at its centre?}$ 1 119 Recommended Questions $\frac{\mu_0}{4\pi} \frac{2i}{r} (\pi + 1)$, $\frac{\mu_0}{4\pi} \frac{2i}{r} (\pi - 1)$... 2 Edit Delete
16764 $\text{A current loop consists of two identical semicircular parts each of radius } R, \text{ one lying in the } x-y \text{ plane, and the other in the } x-z \text{ plane. If the current in the loop is } i, \text{ what will be the resultant magnetic field due to the two semicircular parts at their common centre?}$ 1 119 Recommended Questions $\frac{\mu_0 i}{2\sqrt{2}R}$, $\frac{\mu_0 i}{2R}$... 1 Edit Delete
16763 $\text{If a wire in the form of a square with a side } a \text{ carries a current } i, \text{ then the magnetic induction at the centre of the square wire will be:}$ $\text{(Magnetic permeability of free space } = \mu_0)$ 1 119 Recommended Questions $\frac{\mu_0 i}{2 \pi a}$, $\frac{\mu_0 i \sqrt{2}}{\pi a}$... 3 Edit Delete
16762 $\text{A circular coil is in the } y-z \text{ plane with its centre at the origin. The coil carries a constant current. Assuming the direction of the magnetic field at } x = -25 \text{ cm to be positive, which of the following graphs shows the variation of the magnetic field along the } x\text{-axis?}$ 1 119 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
16761 $\text{A ring of radius } R \text{ carries a linear charge density } \lambda. \text{ It is rotating with angular}$ $\text{speed } \omega \text{ about an axis passing through the centre and perpendicular to the}$ $\text{plane. What is the magnetic field at its centre?}$ 1 119 Recommended Questions $\frac{3\mu_0\lambda\omega}{2}$, $\frac{\mu_0\lambda\omega}{2}$... 2 Edit Delete
16760 $\text{If the magnetic field at the centre of the circular coil is } B_0, \text{ then what is the distance on its axis from the centre of the coil where } B_x = \frac{B_0}{8}?$ $\left(R = \text{radius of the coil}\right)$ 1 119 Recommended Questions $\frac{R}{3}$, $\sqrt{3}R$... 2 Edit Delete
16759 $\text{Two identical long conducting wires } (AOB) \text{ and } (COD) \text{ are placed at a right angle to each other, with one above the other such that } 'O' \text{ is the common point for the two. The wires carry } I_1 \text{ and } I_2 \text{ currents, respectively. The point } 'P' \text{ is lying at a distance } 'd' \text{ from } 'O' \text{ along a direction perpendicular to the plane containing the wires. What will be the magnetic field at the point } P?$ 1 119 Recommended Questions $\frac{\mu_0}{2\pi d} \left( \frac{I_1}{I_2} \right)$, $\frac{\mu_0}{2\pi d} [I_1 + I_2]$... 4 Edit Delete
16758 $\text{In the figure shown below there are two semicircles of radius } r_1 \text{ and } r_2 \text{ in which a current } i \text{ is flowing. The magnetic induction at the centre of } O \text{ will be:}$ 1 119 Recommended Questions $\frac{\mu_0 i}{r \left( r_1 + r_2 \right)}$, $\frac{\mu_0 i}{4} \left[ \frac{r_1 + r_2}{r_1 r_2} \right]$... 2 Edit Delete
16757 $\text{What is the magnetic field at point } O \text{ in the figure?}$ 1 119 Recommended Questions $\frac{\mu_0 I}{4 \pi r}$, $\frac{\mu_0 I}{4 \pi r} + \frac{\mu_0 I}{2 \pi r}$... 3 Edit Delete
16756 $\text{Two similar coils of radius } R \text{ are lying concentrically with their planes at right angles to each other. The currents flowing in them are } I \text{ and } 2I, \text{ respectively. What will be the resultant magnetic field induction at the centre?}$ 1 119 Recommended Questions $\frac{\sqrt{5} \mu_0 I}{2R}$, $\frac{3 \mu_0 I}{2R}$... 1 Edit Delete
16755 $\text{Which of the following graphs correctly represents the variation of magnetic field induction with distance due to a thin wire carrying current?}$ 1 119 Recommended Questions $\text{Graph 1: Linear increase}$, $\text{Graph 2: Parabolic increase}$... 4 Edit Delete
16754 $\text{The magnetic induction at point } P, \text{ which is } 4 \text{ cm from a long current-carrying wire is } 10^{-8} \text{ Tesla.}$ $\text{What would be the field of induction at a distance of } 12 \text{ cm from the same current?}$ 1 119 Recommended Questions $3.33 \times 10^{-9} \text{ Tesla}$, $1.11 \times 10^{-4} \text{ Tesla}$... 1 Edit Delete
16753 $\text{The resistances of three parts of a circular loop are as shown in the figure.}$ $\text{What will be the magnetic field at the centre of } O \text{ (current enters at } A \text{ and leaves at } B \text{ and } C \text{ as shown)?}$ 1 119 Recommended Questions $\frac{\mu_0 I}{6a}$, $\frac{\mu_0 I}{3a}$... 4 Edit Delete
16752 $\text{A long wire carrying a steady current is bent into a circular loop of one turn.}$ $\text{The magnetic field at the centre of the loop is } B. \text{ It is then bent into a circular coil of } n \text{ turns.}$ $\text{What will the magnetic field be at the centre of this } n\text{-turn coil?}$ 1 119 Recommended Questions $nB$, $n^2B$... 2 Edit Delete
16751 $\text{Which one of the following expressions represents Biot-Savart's law? Symbols have their usual meanings.}$ 1 119 Recommended Questions $\vec{dB} = \frac{\mu_0 I (d\vec{l} \times \hat{r})}{4\pi |\vec{r}|^3}$, $\vec{dB} = \frac{\mu_0 I (d\vec{l} \times \hat{r})}{4\pi |\vec{r}|^2}$... 3 Edit Delete
16750 $\text{A straight wire carrying a current of } 12 \text{ A is bent into a semi-circular arc of radius } 2.0 \text{ cm as shown in the figure. Considering the magnetic field } B \text{ at the centre of the arc, what will be the magnetic field due to the straight segments?}$ 1 119 Recommended Questions $0$, $1.2 \times 10^{-4} \text{ T}$... 1 Edit Delete
16749 $\text{An element } \Delta l = \Delta x \hat{i} \text{ is placed at the origin and carries a large current of } I = 10 \text{ A (as shown in the figure). What is the magnetic field on the } y\text{-axis at a distance of } 0.5 \text{ m?}$ $\text{(Given } \Delta x = 1 \text{ cm)}$ 1 119 Recommended Questions $6 \times 10^{-8} \text{ T}$, $4 \times 10^{-8} \text{ T}$... 2 Edit Delete
16748 $\text{To maximise the magnetic field caused by a small element of a current-carrying conductor at a point, the angle between the element and the line connecting the element to the point } P \text{ must be:}$ 1 119 Recommended Questions $0^\circ$, $90^\circ$... 2 Edit Delete
16747 $\text{Which one of the following gives the value of the magnetic field according to Biot-Savart's law?}$ 1 119 Recommended Questions $\frac{i \Delta l \sin(\theta)}{r^2}$, $\frac{\mu_0}{4\pi} \frac{i \Delta l \sin(\theta)}{r}$... 3 Edit Delete
16746 $\text{When two resistances } X \text{ and } Y \text{ are put in the left hand and right hand gaps in}$ $\text{a Wheatstone meter bridge, the null point is at } 60 \text{ cm. If } X \text{ is shunted by a}$ $\text{resistance equal to half of itself, then the shift in the null point will be:}$ 1 118 Recommended Questions $26.7 \text{ cm}$, $33.4 \text{ cm}$... 1 Edit Delete
16745 $\text{A meter bridge is set up to determine unknown resistance } x \text{ using a standard } 10 \, \Omega \text{ resistor.}$ $\text{The galvanometer shows the null point when the tapping key is at a } 52 \, \text{cm mark.}$ $\text{End corrections are } 1 \, \text{cm and } 2 \, \text{cm respectively for end } A \text{ and } B. \text{ Then the value of } x \text{ is:}$ 1 118 Recommended Questions $10.2 \, \Omega$, $10.6 \, \Omega$... 2 Edit Delete
16744 $\text{The metre bridge shown is in a balanced position with } \frac{P}{Q} = \frac{l_1}{l_2}. \text{ If we now interchange the position of the galvanometer and the cell, will the bridge work? If yes, what will be the balanced condition?}$ 1 118 Recommended Questions $\text{Yes, } \frac{P}{Q} = \frac{l_1 - l_2}{l_1 + l_2}$, $\text{No, no null point}$... 4 Edit Delete
16743 $\text{The figure given below shows a circuit when resistances in the two arms of the meter bridge are } 5 \, \Omega \text{ and } R, \text{ respectively.}$ $\text{When the resistance } R \text{ is shunted with equal resistance, the new balance point is at } 1.6l_1. \text{ The resistance } R \text{ is:}$ 1 118 Recommended Questions $10 \, \Omega$, $15 \, \Omega$... 2 Edit Delete
16742 $\text{The Wheatstone bridge shown in the figure below is balanced when the uniform slide wire } AB \text{ is divided as shown. Value of the resistance } X \text{ is:}$ 1 118 Recommended Questions $3 \, \Omega$, $4 \, \Omega$... 3 Edit Delete
16741 $\text{Five equal resistances each of resistance } R \text{ are connected as shown in the figure below. A battery of } V \text{ volts is connected between } A \text{ and } B. \text{ The current flowing in } AFCEDB \text{ will be:}$ 1 118 Recommended Questions $\frac{V}{R}$, $\frac{V}{2R}$... 2 Edit Delete
16740 $\text{In the Wheatstone's bridge (shown in the figure below)}$ $X = Y \text{ and } A > B.$ $\text{The direction of the current between } a \text{ and } b \text{ will be:}$ 1 118 Recommended Questions $\text{from } a \text{ to } b.$, $\text{from } b \text{ to } a.$... 2 Edit Delete
16739 $\text{For the network shown in the figure below, the value of the current } i \text{ is:}$ 1 118 Recommended Questions $\frac{18V}{5}$, $\frac{5V}{9}$... 4 Edit Delete
16738 $\text{In the figure shown, each resistor has resistance } R.$ $\text{Match Column-I and Column-II.}$ $\begin{array}{|c|c|} \hline \text{Column-I} & \text{Column-II} \\ \hline \text{(A) Equivalent resistance between } a \text{ and } b & \text{(P) } \frac{R}{2} \\ \text{(B) Equivalent resistance between } a \text{ and } c & \text{(Q) } \frac{5R}{8} \\ \text{(C) Equivalent resistance between } b \text{ and } d & \text{(R) } R \\ \hline \end{array}$ 1 118 Recommended Questions (A) \rightarrow (P), (B) \rightarrow (Q), (C) \rightarrow (R), (A) \rightarrow (Q), (B) \rightarrow (P), (C) \rightarrow (R)... 2 Edit Delete
16737 $\text{The resistances of the four arms } P, Q, R \text{ and } S \text{ in a Wheatstone's bridge are } 10 \, \Omega, 30 \, \Omega, 30 \, \Omega \text{ and } 90 \, \Omega \text{ respectively.}$ $\text{The emf and internal resistance of the cell are } 7 \, \text{V} \text{ and } 5 \, \Omega \text{ respectively.}$ $\text{If the galvanometer resistance is } 50 \, \Omega \text{ the current drawn from the cell will be:}$ 1 118 Recommended Questions $0.2 \, \text{A}$, $0.1 \, \text{A}$... 1 Edit Delete
16736 $\text{Figure (a) below shows a Wheatstone bridge in which } P, Q, R, S \text{ are fixed resistances, } G \text{ is a galvanometer, and } B \text{ is a battery.}$ $\text{For this particular case, the galvanometer shows zero deflection.}$ $\text{Now, only the positions of } B \text{ and } G \text{ are interchanged, as shown in the figure (b).}$ $\text{The new deflection of the galvanometer:}$ 1 118 Recommended Questions $\text{is to the left}$, $\text{is to the right}$... 3 Edit Delete
16735 $\text{Three resistances } P, Q, \text{ and } R, \text{ each of } 2 \, \Omega \text{ and an unknown resistance } S \text{ form the four arms of a Wheatstone bridge circuit.}$ $\text{When the resistance of } 6 \, \Omega \text{ is connected in parallel to } S, \text{ the bridge gets balanced.}$ $\text{What is the value of } S?$ 1 118 Recommended Questions $2 \, \Omega$, $3 \, \Omega$... 2 Edit Delete
16734 $\text{In the circuit shown in the figure below, if the potential difference between } B \text{ and } D \text{ is zero, then value of the unknown resistance } X \text{ is:}$ 1 118 Recommended Questions $4 \, \Omega$, $2 \, \Omega$... 2 Edit Delete
16733 $\text{In a Wheatstone bridge, all four arms have equal resistance } R. \text{ If the resistance of the galvanometer arm is also } R, \text{ the equivalent resistance of the combination is:}$ 1 118 Recommended Questions $\frac{R}{4}$, $\frac{R}{2}$... 3 Edit Delete
16732 $\text{In the circuit shown in the figure below, the current supplied by the battery is:}$ 1 118 Recommended Questions $2 \text{ A}$, $1 \text{ A}$... 2 Edit Delete
16731 $\text{What is the equivalent resistance between points } a \text{ and } b, \text{ if the value of each resistance is } R?$ 1 118 Recommended Questions $7R$, $5R$... 4 Edit Delete
16730 $\text{The net resistance of the circuit between } A \text{ and } B \text{ is:}$ 1 118 Recommended Questions $\frac{8}{3} \, \Omega$, $\frac{14}{3} \, \Omega$... 2 Edit Delete
16729 $\text{A capacitor } C \text{ is charged with the help of a resistance } R \text{ as shown in the figure, Variation of } (V_R + V_C) \text{ with time } t \text{ is correctly shown in which of the options?}$ $\text{(} V_R \text{ and } V_C \text{ are instantaneous potential drops across } R \text{ and } C \text{ respectively).}$ 1 118 Recommended Questions $V_0 \text{ decreasing with } t$, $V_0 \text{ increasing with } t$... 3 Edit Delete
16728 $\text{In the circuit given below, the emf of the cell is 2 volt and the internal resistance is negligible. The resistance of the voltmeter is 80 ohm. The reading of the voltmeter will be:}$ 1 118 Recommended Questions $0.80 \text{ volt}$, $1.60 \text{ volt}$... 3 Edit Delete
16727 $\text{In the circuit shown below, if a conducting wire is connected between points } A \text{ and } B, \text{ the current in this wire will: (All resistances are given in ohms)}$ 1 118 Recommended Questions $\text{flow from } A \text{ to } B$, $\text{flow in the direction which will be decided by the value of } V$... 4 Edit Delete
16726 $\text{The current in } 8 \, \Omega \text{ resistance is (in the figure below):}$ 1 118 Recommended Questions $0.69 \, \text{A}$, $0.92 \, \text{A}$... 1 Edit Delete
16725 $\text{In circuit shown below, the resistances are given in ohms and the battery is assumed ideal with emf equal to 3 volt. The voltage across the resistance } R_4 \text{ is:}$ 1 118 Recommended Questions $0.4 \text{ V}$, $0.6 \text{ V}$... 1 Edit Delete
16724 $\text{In the circuit shown in the figure below, if the potential at point } A \text{ is taken to be zero, the potential at point } B \text{ will be:}$ 1 118 Recommended Questions $+1 \text{ V}$, $-1 \text{ V}$... 1 Edit Delete
16723 $\text{The potential difference across } 8 \, \Omega \text{ resistance is } 48 \, \text{V as shown in the figure below.}$ $\text{The value of potential difference across } X \text{ and } Y \text{ points will be:}$ 1 118 Recommended Questions $160 \, \text{V}$, $128 \, \text{V}$... 1 Edit Delete
16722 $\text{What is the ratio of currents flowing in the resistors } x \text{ and } y \text{ of resistance } 10 \, \Omega \text{ each?}$ 1 118 Recommended Questions $1$, $0.5$... 1 Edit Delete
16721 $A,\ B\ \text{and}\ C\ \text{are voltmeters of resistance}\ R,\ 1.5R\ \text{and}\ 3R\ \text{respectively as shown in the figure above.}$ $\text{When some potential difference is applied between}\ X\ \text{and}\ Y,\ \text{the voltmeter readings are}\ V_A,\ V_B\ \text{and}\ V_C\ \text{respectively. Then:}$ 1 118 Recommended Questions $V_A = V_B = V_C$, $V_A \neq V_B = V_C$... 1 Edit Delete
16720 $\text{Consider the circuit shown in the figure below. The current } I_3 \text{ is equal to:}$ 1 118 Recommended Questions $5 \text{ A}$, $3 \text{ A}$... 4 Edit Delete
16719 $\text{A battery of emf } 10 \text{ V is connected to resistance as shown in the figure below.}$ $\text{The potential difference } V_A - V_B \text{ between the points } A \text{ and } B \text{ is:}$ 1 118 Recommended Questions $-2 \text{ V}$, $2 \text{ V}$... 2 Edit Delete
16718 $\text{For the circuit given below, Kirchhoff's loop rule for the loop } BCDEB \text{ is given by the equation:}$ 1 118 Recommended Questions $-i_2R_2 + E_2 - E_3 + i_3R_1 = 0$, $i_2R_2 + E_2 - E_3 - i_3R_1 = 0$... 2 Edit Delete
16717 $\text{The current through the } 5 \, \Omega \text{ resistor is:}$ 1 118 Recommended Questions $3.2 \, \text{A}$, $2.8 \, \text{A}$... 2 Edit Delete
16716 $\text{See the electrical circuit shown in this figure. Which of the following is a correct equation for it?}$ 1 118 Recommended Questions $\varepsilon_1 - (i_1 + i_2)R - i_1r_1 = 0$, $\varepsilon_2 - i_2r_2 - \varepsilon_1 - i_1r_1 = 0$... 1 Edit Delete
16715 $\text{Twelve wires of equal resistance } R \text{ are connected to form a cube.}$ $\text{The effective resistance between two diagonal ends } A \text{ and } E \text{ will be:}$ 1 118 Recommended Questions $\frac{5R}{6}$, $\frac{6R}{5}$... 1 Edit Delete
16714 $\text{In the following circuit, the battery } E_1 \text{ has an emf of } 12 \text{ volts and zero internal resistance while the battery } E \text{ has an emf of } 2 \text{ volts.}$ $\text{If the galvanometer } G \text{ reads zero, then the value of the resistance } X \text{ in ohms is:}$ 1 118 Recommended Questions $10$, $100$... 2 Edit Delete
16713 $\text{The potential difference } V_A - V_B \text{ between the points } A \text{ and } B \text{ in the given figure is:}$ $\begin{array}{c} V_A \xrightarrow{I=2\,\text{A}} 2\,\Omega \quad 3\,\text{V} \quad 1\,\Omega \xrightarrow{} V_B \end{array}$ 1 118 Recommended Questions $-3\,\text{V}$, $+3\,\text{V}$... 4 Edit Delete
16712 $\text{Kirchhoff's second law is based on the principle of conservation of:}$ 1 118 Recommended Questions $\text{charge}$, $\text{energy}$... 2 Edit Delete
16711 $\text{In the given figure, the value of } V_0 \text{ will be:}$ 1 118 Recommended Questions $2 \text{ V}$, $4 \text{ V}$... 2 Edit Delete
16710 $\text{Given below two statements:}$ $\text{Statement I: Kirchhoff's junction law follows the conservation of charge.}$ $\text{Statement II: Kirchhoff's loop law follows the conservation of energy.}$ 1 118 Recommended Questions $\text{Both Statement I and Statement II are incorrect.}$, $\text{Statement I is correct but Statement II is incorrect.}$... 4 Edit Delete
16709 $\text{Kirchhoff's junction rule is a reflection of:}$ $\text{(a) conservation of the current density vector.}$ $\text{(b) conservation of charge.}$ $\text{(c) the fact that the momentum with which a charged particle approaches a junction is unchanged (as a vector) as the charged particle leaves the junction.}$ $\text{(d) the fact that there is no accumulation of charges at a junction.}$ $\text{Which of the above statements are correct?}$ 1 118 Recommended Questions $(\text{b) and (c)})$, $(\text{a) and (c)})$... 3 Edit Delete
16708 $\text{What is the value of current } I \text{ in the network shown below?}$ 1 118 Recommended Questions $2 \text{ A}$, $3 \text{ A}$... 4 Edit Delete
16707 $\text{The figure below shows a network of currents. The current } i \text{ will be:}$ 1 118 Recommended Questions $3 \text{ A}$, $13 \text{ A}$... 3 Edit Delete
16706 $\text{The current in the arm } CD \text{ of the circuit will be:}$ 1 118 Recommended Questions $i_1 + i_2$, $i_2 + i_3$... 2 Edit Delete
16705 $\text{The figure below shows currents in a part of the electric circuit. The current } i \text{ is:}$ 1 118 Recommended Questions $1.7 \text{ A}$, $3.7 \text{ A}$... 1 Edit Delete
16704 $12$ $\text{cells each having the same emf are connected in series with some cells wrongly connected. The arrangement is connected in series with an ammeter and two similar cells which are in series. Current is } 3 \text{ A when cells and battery aid each other and is } 2 \text{ A when cells and battery oppose each other. The number of cells wrongly connected is/are:}$ 1 118 Recommended Questions $4$, $1$... 2 Edit Delete
16703 $\text{In the circuit shown below, } E_1 = 4.0 \text{ V}, R_1 = 2 \, \Omega, E_2 = 6.0 \text{ V}, R_2 = 4 \, \Omega \text{ and } R_3 = 2 \, \Omega. \text{ The current } I_1 \text{ is:}$ 1 118 Recommended Questions $1.6 \text{ A}$, $1.8 \text{ A}$... 2 Edit Delete
16702 $\text{Two cells of emf } E \text{ and internal resistance } r_1 \text{ and } r_2 \text{ are connected in series through an external resistance } R. \text{ The value of } R \text{ for which the potential difference across one of the cells becomes zero will be:}$ 1 118 Recommended Questions $\frac{r_1 r_2}{r_1 + r_2}$, $r_1 + r_2$... 3 Edit Delete
16701 $\text{Eels are able to generate current with biological cells called electroplaques.}$ $\text{The electroplaques in an eel are arranged in 100 rows, each row stretching}$ $\text{horizontally along the body of the fish containing 5000 electroplaques.}$ $\text{The arrangement is suggestively shown below. Each electroplaque has an emf of}$ $0.15 \text{ V and internal resistance of } 0.25 \ \Omega.$ $\text{The water surrounding the eel completes a circuit between the head and its}$ $\text{tail. If the water surrounding it has a resistance of } 500 \ \Omega, \text{ the current an eel}$ $\text{can produce in water is about:}$ 1 118 Recommended Questions $1.5 \text{ A}$, $3.0 \text{ A}$... 1 Edit Delete
16700 $\text{A battery consists of a variable number } 'n' \text{ of identical cells having internal resistances connected in series. The terminals of battery are short circuited and the current } i \text{ is measured. The graph below that shows the relationship between } i \text{ and } n \text{ is:}$ 1 118 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 4 Edit Delete
16699 $\text{Two batteries, one of emf } 18 \text{ volts and internal resistance } 2 \, \Omega \text{ and the other of emf } 12 \, \text{V and internal resistance } 1 \, \Omega, \text{ are connected as shown. The voltmeter } V \text{ will record a reading of:}$ 1 118 Recommended Questions $18 \, \text{V}$, $30 \, \text{V}$... 3 Edit Delete
16698 $\text{A current of } 2 \text{ A is to be sent through a resistor of } 5 \, \Omega. \text{ Number of cells required in series, if each has emf } 2 \text{ V and internal resistance } 0.5 \, \Omega, \text{ are:}$ 1 118 Recommended Questions $40$, $30$... 4 Edit Delete
16697 $\text{Current through the } 2 \, \Omega \text{ resistance in the electrical network shown is:}$ $\begin{array}{c} 2 \, \text{V} \\ \begin{array}{ccc} & 10 \, \Omega & \\ 2 \, \Omega & & 20 \, \Omega \\ & & \\ \end{array} \\ 12 \, \text{V} \end{array}$ 1 118 Recommended Questions $\text{zero}$, $1 \, \text{A}$... 1 Edit Delete
16696 $\text{Two batteries, one of emf } 18 \text{ V and internal resistance } 2 \ \Omega \text{ and the other of emf } 12 \text{ V and internal resistance } 1 \ \Omega, \text{ are connected as shown. Reading of the voltmeter is:}$ $\text{(if a voltmeter is ideal)}$ 1 118 Recommended Questions $14 \text{ V}$, $15 \text{ V}$... 1 Edit Delete
16695 $\text{For the circuit shown in the figure, the current } I \text{ will be:}$ 1 118 Recommended Questions $0.75 \text{ A}$, $1 \text{ A}$... 2 Edit Delete
16694 $\text{Given below are two statements:}$ $\text{Assertion (A): Terminal voltage of a cell is greater than emf of a cell during charging of the cell.}$ $\text{Reason (R): The emf of a cell is always greater than its terminal voltage.}$ 1 118 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
16693 $\text{The terminal potential difference of a cell is greater than its emf when:}$ 1 118 Recommended Questions $\text{A battery of less emf is connected in its series.}$, $\text{A battery of higher emf is connected in its series.}$... 3 Edit Delete
16692 $\text{The value of } E \text{ (emf of the cell) in the circuit given below is:}$ 1 118 Recommended Questions $24 \text{ V}$, $32 \text{ V}$... 2 Edit Delete
16691 $\text{A car battery of emf } 12 \text{ V and internal resistance } 5 \times 10^{-2} \, \Omega \text{ receives a current of } 60 \, \text{A from an external source. The terminal voltage of the battery is:}$ 1 118 Recommended Questions $12 \, \text{V}$, $9 \, \text{V}$... 3 Edit Delete
16690 $\text{A cell having an emf } \varepsilon \text{ and internal resistance } r \text{ is connected across a variable external resistance } R. \text{ As the resistance } R \text{ is increased, the plot of potential difference } V \text{ across } R \text{ is given by:}$ 1 118 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
16689 $\text{For a cell, the graph between the potential difference } (V) \text{ across the terminals of the cell and the current } (I) \text{ drawn from the cell is shown in the figure below.}$ $\text{The emf and the internal resistance of the cell are, respectively:}$ 1 118 Recommended Questions $2 \text{ V}, 0.5 \, \Omega$, $2 \text{ V}, 0.4 \, \Omega$... 2 Edit Delete
16688 $\text{A battery of emf } E \text{ and internal resistance } r \text{ is connected to a variable resistor } R \text{ as shown below. Which one of the following is true?}$ 1 118 Recommended Questions $\text{The potential difference across the terminals of the battery is maximum when } R = r.$, $\text{The power delivered to the resistor is maximum when } R = r.$... 2 Edit Delete
16687 $\text{A battery is charged at a potential of } 15 \text{ V for } 8 \text{ hours when the current flowing is } 10 \text{ A.}$ $\text{The battery on discharge supplies a current of } 5 \text{ A for } 15 \text{ hours.}$ $\text{The mean terminal voltage during discharges is } 14 \text{ V.}$ $\text{The "Watt hour" efficiency of the battery is:}$ 1 118 Recommended Questions $80\%$, $90\%$... 3 Edit Delete
16686 $\text{A battery has emf } 4 \text{ V and internal resistance } r. \text{ When this battery is connected to an external resistance of } 2 \ \Omega, \text{ a current of } 1 \text{ ampere flows in the circuit. How much current will flow if the terminals of the battery are connected directly?}$ 1 118 Recommended Questions $1 \text{ A}$, $2 \text{ A}$... 2 Edit Delete
16685 $\text{A student measures the terminal potential difference } V \text{ of a cell (of emf } E \text{ and internal resistance } R) \text{ as a function of the current } I \text{ flowing through it.}$ $\text{The slope and intercept of the graph between } V \text{ and } I, \text{ respectively, is equal to:}$ 1 118 Recommended Questions $E \text{ and } -r$, $-r \text{ and } E$... 2 Edit Delete
16684 $\text{For a cell, the terminal potential difference is } 2.2 \text{ V when the circuit is open and reduces to } 1.8 \text{ V when the cell is connected to the resistance of } R = 5 \, \Omega. \text{ The internal resistance of cell } (r) \text{ is:}$ 1 118 Recommended Questions $\frac{10}{9} \, \Omega$, $\frac{9}{10} \, \Omega$... 1 Edit Delete
16683 $\text{A set of } 'n' \text{ equal resistors, of value } 'R' \text{ each, are connected in series to a battery of emf } 'E' \text{ and internal resistance } 'R'. \text{ The current drawn is } I. \text{ Now, if } 'n' \text{ resistors are connected in parallel to the same battery, then the current drawn becomes } 10I. \text{ The value of } 'n' \text{ is:}$ 1 118 Recommended Questions $10$, $11$... 1 Edit Delete
16682 $\text{A current of } 2 \text{ A flows through a } 2 \ \Omega \text{ resistor when connected across a battery.}$ $\text{The same battery supplies a current of } 0.5 \text{ A when connected across a } 9 \ \Omega \text{ resistor.}$ $\text{The internal resistance of the battery is:}$ 1 118 Recommended Questions $\frac{1}{3} \ \Omega$, $\frac{1}{4} \ \Omega$... 1 Edit Delete
16681 $\text{A voltmeter of resistance } 660 \, \Omega \text{ reads the voltage of a very old cell to be } 1.32 \, \text{V while a potentiometer reads its voltage to be } 1.44 \, \text{V. The internal resistance of the cell is:}$ 1 118 Recommended Questions $30 \, \Omega$, $60 \, \Omega$... 2 Edit Delete
16680 $\text{A battery of internal resistance } r, \text{ when connected across } 2 \, \Omega \text{ resistor supplies a current of } 4 \, \text{A.}$ $\text{When the battery is connected across a } 5 \, \Omega \text{ resistor, it supplies a current of } 2 \, \text{A.}$ $\text{The value of } r \text{ is:}$ 1 118 Recommended Questions $2 \, \Omega$, $1 \, \Omega$... 2 Edit Delete
16679 $\text{The internal resistance of a } 2.1 \text{ V cell which gives a current of } 0.2 \text{ A through a resistance of } 10 \ \Omega \text{ is:}$ 1 118 Recommended Questions $0.5 \ \Omega$, $0.8 \ \Omega$... 1 Edit Delete
16678 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{A } 60 \text{ W } - 220 \text{ V bulb glows more than a } 100 \text{ W } - 220 \text{ V bulb when they are connected in series across a potential difference.}$ $\text{Reason (R):}$ \text{When they are connected in series, the resistance of the } 100 \text{ W bulb will be more.}$ 1 118 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
16677 $\text{A 50 kW dc generator produces a potential difference of 250 V. If the resistance of the transmission line is 1 } \Omega, \text{ what percentage of the original power is lost during transmission?}$ $1. \ 80\%$ $2. \ 40\%$ $3. \ 20\%$ $4. \ 10\%$ 1 118 Recommended Questions 80\%, 40\%... 1 Edit Delete
16676 $\text{In the given circuit diagram, 3 identical bulbs are connected. If bulb } B_3 \text{ get fused suddenly, how will the brightness of bulbs } B_1 \text{ and } B_2 \text{ change?}$ 1 118 Recommended Questions $\text{Brightness of bulb } B_1 \text{ will increase whereas brightness of bulb } B_2 \text{ will decrease}$, $\text{Brightness of bulb } B_2 \text{ will increase whereas brightness of bulb } B_1 \text{ will decrease}$... 2 Edit Delete
16675 $\text{A torch bulb rated } 4.5 \text{ W, } 1.5 \text{ V is connected as shown in the figure below. The emf of the cell needed to make the bulb glow at full intensity is:}$ 1 118 Recommended Questions $4.5 \text{ V}$, $1.5 \text{ V}$... 4 Edit Delete
16674 $\text{An electric kettle takes } 4 \text{ A current at } 220 \text{ V. How much time will it take to boil } 1 \text{ kg of water at a temperature of } 20^\circ\text{C? The temperature of boiling water is } 100^\circ\text{C.}$ 1 118 Recommended Questions $6.3 \text{ min}$, $8.4 \text{ min}$... 1 Edit Delete
16673 $\text{A constant voltage is applied between the two ends of a uniform metallic wire.}$ $\text{Some heat is developed in it. The heat developed doubles if:}$ 1 118 Recommended Questions $\text{both the length and the radius of the wire are halved.}$, $\text{both the length and the radius of the wire are doubled.}$... 2 Edit Delete
16672 $\text{The charge flowing through a resistance } R \text{ varies with time } t \text{ as}$ $Q = at - bt^2, \text{ where } a \text{ and } b \text{ are positive constants. The total heat produced in } R \text{ is:}$ 1 118 Recommended Questions $\frac{a^3 R}{3b}$, $\frac{a^3 R}{2b}$... 4 Edit Delete
16671 $\text{Four identical bulbs } A, B, C \text{ and } D \text{ are connected in a circuit as shown in the figure.}$ $\text{Now whenever any bulb fails, then it cannot conduct current through it.}$ $\text{Then which of the following statement(s) is/are true?}$ 1 118 Recommended Questions $(i) \text{ only}$, $(ii) \text{ only}$... 3 Edit Delete
16670 $\text{A coil heating a bucket full of water raises the temperature by } 5^\circ \text{C in 2 min. If the current in the coil is doubled, what will be the change in the temperature of water in 1 min? (Assume no loss of heat to the surroundings)}$ 1 118 Recommended Questions $10^\circ \text{C}$, $5^\circ \text{C}$... 1 Edit Delete
16669 $\text{An electric heater consists of a nichrome coil and operates under } 220 \text{ V, consuming } 1 \text{ kW of power. Part of its coil burned out and was reconnected after removing the burnt portion. The power it will consume now is:}$ 1 118 Recommended Questions $\text{more than } 1 \text{ kW}$, $\text{less than } 1 \text{ kW but not zero}$... 1 Edit Delete
16668 $\text{Six similar bulbs are connected as shown in the figure with a DC source of emf } E \text{ and zero internal resistance.}$ $\text{The ratio of power consumption by the bulbs when (i) all are glowing and (ii) in the situation when two from section } A \text{ and one from section } B \text{ are glowing, will be:}$ 1 118 Recommended Questions $2 : 1$, $4 : 9$... 3 Edit Delete
16667 $\text{For the given circuit, the value of the resistance in which the maximum heat is produced is:}$ 1 118 Recommended Questions $2 \, \Omega$, $6 \, \Omega$... 1 Edit Delete
16666 $\text{When a } 100 \text{ W, } 240 \text{ V bulb is operated at } 200 \text{ volt, the current in it is:}$ $1.\ 0.35\ \text{A}$ $2.\ 0.42\ \text{A}$ $3.\ 0.50\ \text{A}$ $4.\ 0.58\ \text{A}$ 1 118 Recommended Questions $0.35\ \text{A}$, $0.42\ \text{A}$... 1 Edit Delete
16665 $\text{Two resistors of resistance, } 100 \, \Omega \text{ and } 200 \, \Omega \text{ are connected in parallel in an electrical circuit.}$ $\text{The ratio of the thermal energy developed in } 100 \, \Omega \text{ resistor to that in } 200 \, \Omega \text{ resistor in a given time is:}$ 1 118 Recommended Questions $4 : 1$, $1 : 2$... 3 Edit Delete
16664 $\text{When three identical bulbs are connected in series, the consumed power is } 10 \text{ W. If they are now connected in parallel then the consumed power will be:}$ 1 118 Recommended Questions $30 \text{ W}$, $90 \text{ W}$... 2 Edit Delete
16663 60 1 118 Recommended Questions 1, 2... 4 Edit Delete
16662 $\text{Power consumed in the given circuit is } P_1. \text{ On interchanging the position of } 3 \, \Omega \text{ and } 12 \, \Omega \text{ resistances, the new power consumption is } P_2. \text{ The ratio of } \frac{P_2}{P_1} \text{ is:}$ 1 118 Recommended Questions $2$, $\frac{1}{2}$... 1 Edit Delete
16661 $\text{If the voltage across a bulb rated (220 V-100 W) drops by 2.5\% of its rated value, the percentage of the rated value by which the power would decrease is:}$ $1.\ 20\%$ $2.\ 2.5\%$ $3.\ 5\%$ $4.\ 10\%$ 1 118 Recommended Questions $20\%$, $2.5\%$... 3 Edit Delete
16660 $\text{If power dissipated in the } 9 \, \Omega \text{ resistor in the circuit shown is } 36 \, \text{W, the potential difference across the } 2 \, \Omega \text{ resistor will be:}$ 1 118 Recommended Questions $8 \, \text{V}$, $10 \, \text{V}$... 2 Edit Delete
16659 $\text{A current of } 3 \text{ A flows through the } 2 \, \Omega \text{ resistor shown in the circuit. The power dissipated in the } 5 \, \Omega \text{ resistor is:}$ 1 118 Recommended Questions $4 \, \text{W}$, $2 \, \text{W}$... 4 Edit Delete
16658 $\text{Two cities are } 150 \text{ km apart. The electric power is sent from one city to another city through copper wires. The fall of potential per km is } 8 \text{ volts and the average resistance per km is } 0.5 \text{ ohm. The power loss in the wire is:}$ 1 118 Recommended Questions $19.2 \text{ W}$, $19.2 \text{ kW}$... 2 Edit Delete
16657 $A \ 5 \ \text{A} \ \text{fuse wire can withstand a maximum power of} \ 1 \ \text{W in a circuit. The resistance of the fuse wire is:}$ 1 118 Recommended Questions $5 \ \Omega$, $0.04 \ \Omega$... 2 Edit Delete
16656 $\text{The total power dissipated in watts in the circuit shown below is:}$ 1 118 Recommended Questions $16 \text{ W}$, $40 \text{ W}$... 3 Edit Delete
16655 $\text{If there are two bulbs of } (40 \text{ W, } 200 \text{ V}), \text{ and } (100 \text{ W, } 200 \text{ V}), \text{ then the correct relation for their resistance is:}$ $1. \ R_{40} < R_{100}$ $2. \ R_{40} > R_{100}$ $3. \ R_{40} = R_{100}$ $4. \ \text{no relation can be predicted}$ 1 118 Recommended Questions $R_{40} < R_{100}$, $R_{40} > R_{100}$... 2 Edit Delete
16654 $\text{Three voltmeters are connected as shown.}$ $\text{A potential difference is applied between } A \text{ and } B. \text{ On closing the switch } S,$ $\text{readings of voltmeter(s):}$ 1 118 Recommended Questions $V_1 \text{ increases.}$, $V_2 \text{ increases.}$... 3 Edit Delete
16653 $\text{A ring is made of a wire having a resistance of } R_0 = 12 \, \Omega. \text{ Find points } A \text{ and } B, \text{ as shown in the figure, at which a current-carrying conductor should be connected so that the resistance } R \text{ of the subcircuit between these points equals } \frac{8}{3} \, \Omega?$ 1 118 Recommended Questions $\frac{l_1}{l_2} = \frac{5}{8}$, $\frac{l_1}{l_2} = \frac{1}{3}$... 4 Edit Delete
16652 $\text{In the figure, the value of resistors to be connected between } C \text{ and } D \text{ so that}$ $\text{the resistance of the entire circuit between } A \text{ and } B \text{ does not change with the}$ $\text{number of elementary sets used is:}$ 1 118 Recommended Questions $R$, $R(\sqrt{3} - 1)$... 2 Edit Delete
16651 $\text{What is the equivalent resistance between terminals } A \text{ and } B \text{ of the network?}$ 1 118 Recommended Questions $\frac{57}{7} \, \Omega$, $8 \, \Omega$... 2 Edit Delete
16650 $\text{If each resistance in the figure is } 9 \, \Omega, \text{ then the reading of the ammeter is:}$ 1 118 Recommended Questions $5 \, \text{A}$, $8 \, \text{A}$... 1 Edit Delete
16649 $\text{The current } I \text{ as shown in the circuit will be:}$ 1 118 Recommended Questions $10 \text{ A}$, $\frac{20}{3} \text{ A}$... 4 Edit Delete
16648 $\text{A wire of resistance } R \text{ is divided into 10 equal parts. These parts are connected in parallel, the equivalent resistance of such connection will be:}$ 1 118 Recommended Questions $0.01R$, $0.1R$... 1 Edit Delete
16647 $\text{The total current supplied to the circuit by the battery is:}$ 1 118 Recommended Questions $1 \text{ A}$, $2 \text{ A}$... 3 Edit Delete
16646 $\text{A wire of resistance } 12 \, \Omega \text{m}^{-1} \text{ is bent to form a complete circle of radius } 10 \, \text{cm.}$ $\text{The resistance between its two diametrically opposite points, } A \text{ and } B \text{ as shown in the figure, is:}$ 1 118 Recommended Questions $0.6\pi \, \Omega$, $3\pi \, \Omega$... 1 Edit Delete
16645 $\text{The resistance between terminals } A \text{ and } B \text{ is:}$ 1 118 Recommended Questions $5 \, \Omega$, $15 \, \Omega$... 3 Edit Delete
16644 $\text{What is the reading of the voltmeter of resistance } 1200 \, \Omega \text{ connected in the following circuit diagram?}$ 1 118 Recommended Questions $2.5 \, \text{V}$, $5.0 \, \text{V}$... 2 Edit Delete
16643 $\text{In the circuit shown, the value of each of the resistances is } r. \text{ The equivalent resistance of the circuit between terminals } A \text{ and } B \text{ will be:}$ 1 118 Recommended Questions $\frac{4r}{3}$, $\frac{3r}{2}$... 4 Edit Delete
16642 $\text{What is the equivalent resistance of the circuit?}$ 1 118 Recommended Questions $6 \, \Omega$, $7 \, \Omega$... 3 Edit Delete
16641 $\text{What is total resistance across terminals } A \text{ and } B \text{ in the following network?}$ 1 118 Recommended Questions $R$, $2R$... 4 Edit Delete
16640 $\text{Equivalent resistance across terminals } A \text{ and } B \text{ will be:}$ 1 118 Recommended Questions $1 \, \Omega$, $2 \, \Omega$... 1 Edit Delete
16639 $\text{The equivalent resistance between } A \text{ and } B \text{ is:}$ 1 118 Recommended Questions $3 \, \Omega$, $6 \, \Omega$... 2 Edit Delete
16638 $\text{The resistance between points } A \text{ and } B \text{ in the circuit shown in the following figure is:}$ 1 118 Recommended Questions $10 \, \Omega$, $20 \, \Omega$... 3 Edit Delete
16637 $\text{The effective resistance between points } P \text{ and } Q \text{ of the electrical circuit shown in the figure is:}$ 1 118 Recommended Questions $\frac{2Rr}{(R+r)}$, $\frac{8R(R+r)}{(3R+r)}$... 1 Edit Delete
16636 $\text{In the circuit shown in the figure, the effective resistance between } A \text{ and } B \text{ is:}$ 1 118 Recommended Questions $2 \, \Omega$, $4 \, \Omega$... 1 Edit Delete
16635 $\text{A potential divider is used to give outputs of } 2 \text{ V and } 3 \text{ V from a } 5 \text{ V source, as shown in the figure.}$ $\text{Which combination of resistances, from the ones given below, } R_1, R_2, \text{ and } R_3 \text{ give the correct voltages?}$ 1 118 Recommended Questions $R_1 = 1 \text{ k}\Omega, R_2 = 1 \text{ k}\Omega, R_3 = 2 \text{ k}\Omega$, $R_1 = 2 \text{ k}\Omega, R_2 = 1 \text{ k}\Omega, R_3 = 2 \text{ k}\Omega$... 2 Edit Delete
16634 $\text{What is the equivalent resistance between } A \text{ and } B \text{ in the figure below if } R = 3 \, \Omega?$ 1 118 Recommended Questions $9 \, \Omega$, $12 \, \Omega$... 4 Edit Delete
16633 $\text{The equivalent resistance between points } A \text{ and } B \text{ in the circuit shown in the figure is:}$ 1 118 Recommended Questions $6R$, $4R$... 4 Edit Delete
16632 $\text{The equivalent resistance between } A \text{ and } B \text{ for the mesh shown in the figure is:}$ 1 118 Recommended Questions $7.2 \, \Omega$, $16 \, \Omega$... 2 Edit Delete
16631 $\text{A circuit consists of five identical conductors as shown in the figure. The two similar conductors are added as indicated by the dotted lines. The ratio of resistances before and after the addition will be:}$ 1 118 Recommended Questions $\frac{7}{5}$, $\frac{3}{5}$... 3 Edit Delete
16630 $\text{A student has three } 6.0 \, \Omega \text{ resistors that can be connected together in any configuration.}$ $\text{What are the maximum and minimum resistances that can be obtained by using one or more of these three resistors?}$ $\text{(Assume the connections between the resistors have negligible resistance, the temperature of the resistors is constant, and the resistors are used in a d.c. circuit and none of the resistors are short circuited.)}$ 1 118 Recommended Questions $\text{maximum resistance: } 12 \, \Omega; \text{ minimum resistance: } 0.50 \, \Omega$, $\text{maximum resistance: } 6.0 \, \Omega; \text{ minimum resistance: } 0.50 \, \Omega$... 4 Edit Delete
16629 $\text{Three resistors are connected to a } 20 \text{ V battery with a constant voltage supply.}$ $\text{One of the resistors is a variable resistor. The resistance of the variable}$ $\text{resistor is gradually increased from } 0 \, \Omega \text{ to } 5 \, \Omega.$ $\text{Which graph correctly represents how the current drawn from the battery}$ $\text{varies with the resistance } (R) \text{ of the variable resistor?}$ 1 118 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 4 Edit Delete
16628 $\text{Variation of current passing through a conductor with the voltage applied across its ends varies is shown in the diagram below. If the resistance } (R) \text{ is determined at points } A, B, C \text{ and } D, \text{ we will find that:}$ 1 118 Recommended Questions $R_C = R_D$, $R_B > R_A$... 4 Edit Delete
16627 $\text{Consider a thin rectangular sheet of side } L, \text{ width } b \text{ and thickness } t, \text{ made of a material of resistivity } \rho. \text{ The resistance between two opposite faces, shown by the shaded areas in the figure is:}$ 1 118 Recommended Questions $\text{directly proportional to } b$, $\text{inversely proportional to } t$... 2 Edit Delete
16626 $\text{Two metal wires of identical dimensions are connected in series. If } \sigma_1 \text{ and } \sigma_2 \text{ are the conductivities of the metal wires respectively, the effective conductivity of the combination is:}$ 1 118 Recommended Questions $\frac{2 \sigma_1 \sigma_2}{\sigma_1 + \sigma_2}$, $\frac{\sigma_1 + \sigma_2}{2 \sigma_1 \sigma_2}$... 1 Edit Delete
16625 $\text{The dependence of resistivity } (\rho) \text{ on the temperature } (T) \text{ of a semiconductor is, roughly, represented by:}$ 1 118 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 3 Edit Delete
16624 $\text{The current-voltage graph for a given metallic conductor at two different temperatures } T_1 \text{ and } T_2 \text{ is as shown in the figure. Then:}$ $1. \ T_1 = T_2$ $2. \ T_2 > T_1$ $3. \ T_1 > T_2$ $4. \ \text{Insufficient information to conclude.}$ 1 118 Recommended Questions $T_1 = T_2$, $T_2 > T_1$... 2 Edit Delete
16623 $\text{The plot of current } I \,(A) \text{ flowing through a metallic conductor versus the applied voltage } V \,(\text{volt}) \text{ across the ends of a conductor is:}$ 1 118 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
16622 $\text{The specific resistance of a conductor increases with:}$ 1 118 Recommended Questions $\text{increase in temperature.}$, $\text{increase in cross-section area.}$... 1 Edit Delete
16621 $\text{A wire of resistance } 4 \, \Omega \text{ is stretched to twice its original length. The resistance of a stretched wire would be:}$ 1 118 Recommended Questions $4 \, \Omega$, $8 \, \Omega$... 3 Edit Delete
16620 $\text{Two solid conductors are made up of the same material and have the same length and the same resistance.}$ $\text{One of them has a circular cross-section of area } A_1 \text{ and the other one has a square cross-section of area } A_2.}$ $\text{The ratio of } A_1/A_2 \text{ is:}$ 1 118 Recommended Questions $1.5$, $1$... 2 Edit Delete
16619 $\text{A wire made of a metal of uniform resistivity } 1.0 \times 10^{-6} \, \Omega\text{-m is } 2.0 \, \text{m long}$ $\text{and has a diameter of } 2.0 \times 10^{-3} \, \text{m. What is the electrical resistance of this}$ $\text{length of the wire?}$ 1 118 Recommended Questions $\frac{2.0 \times 10^{-3}}{\pi} \, \Omega$, $5.0 \times 10^{-13} \pi \, \Omega$... 4 Edit Delete
16618 $\text{The resistance of a wire is } R \text{ ohm. If it is melted and stretched to } n \text{ times its original length, its new resistance will be:}$ 1 118 Recommended Questions $nR$, $\frac{R}{n}$... 3 Edit Delete
16617 $\text{Given below are two statements:}$ $\text{Assertion (A): Insulators do not allow flow of current through themselves.}$ $\text{Reason (R): They have no free charge carriers.}$ 1 118 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
16616 $\text{Given below are two statements:}$ $\text{Assertion (A): Though a large number of free electrons are present in the metal. Yet there is no current in the absence of an electric field.}$ $\text{Reason (R): In the absence of an electric field, electrons move randomly in all directions.}$ 1 118 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
16615 Which of the following graph correctly represents the variation of mobility $(\mu)$ of electrons with applied electric field $(E)$ in a metallic conductor? 1 118 Recommended Questions $\mu$ vs $E$ (linear increasing), $\mu$ vs $E$ (decreasing curve)... 3 Edit Delete
16614 $\text{If a metallic block has no potential difference applied across it, then the mean}$ $\text{velocity of free electron is:}$ $(T = \text{absolute temperature of the block})$ 1 118 Recommended Questions $\text{proportional to } T.$, $\text{proportional to } \sqrt{T}$... 3 Edit Delete
16613 $\text{A current passes through a wire of variable cross-section in steady-state as shown. Then incorrect statement is:}$ 1 118 Recommended Questions $\text{Current density increases in the direction of the current.}$, $\text{Potential increases in the direction of the current.}$... 2 Edit Delete
16612 $\text{Across a metallic conductor of non-uniform cross-section, a constant potential difference is applied. The quantity which remains constant along the conductor is:}$ 1 118 Recommended Questions $\text{current density}$, $\text{current}$... 2 Edit Delete
16611 $\text{A copper wire of length } 10 \text{ m and radius } \left(10^{-2}/\sqrt{\pi}\right) \text{ m has an electrical resistance of } 10 \, \Omega. \text{ The current density in the wire for an electric field strength of } 10 \, (\text{V/m}) \text{ is:}$ 1 118 Recommended Questions $10^5 \, \text{A/m}^2$, $10^4 \, \text{A/m}^2$... 1 Edit Delete
16610 $\text{When the potential difference applied in a conductor is doubled and also the length of the conductor is halved, the drift speed of electrons in the conductor will:}$ 1 118 Recommended Questions $\text{not change}$, $\text{be halved}$... 3 Edit Delete
16609 $\text{The drift velocity of free electrons in a conductor is } v \text{ when a current } i \text{ is flowing in it. If both the radius and current are doubled, then the drift velocity will be:}$ 1 118 Recommended Questions $v$, $\frac{v}{2}$... 2 Edit Delete
16608 $\text{Drift velocity } v_d \text{ varies with the intensity of the electric field as per the relation:}$ $1. \ v_d \propto E$ $2. \ v_d \propto \frac{1}{E}$ $3. \ v_d = \text{constant}$ $4. \ v_d \propto E^2$ 1 118 Recommended Questions $v_d \propto E$, $v_d \propto \frac{1}{E}$... 1 Edit Delete
16607 $\text{A charged particle having drift velocity of } 7.5 \times 10^{-4} \text{ ms}^{-1} \text{ in an electric field of } 3 \times 10^{-10} \text{ Vm}^{-1}, \text{ has mobility of:}$ 1 118 Recommended Questions $2.5 \times 10^{6} \text{ m}^2\text{V}^{-1}\text{s}^{-1}$, $2.5 \times 10^{-6} \text{ m}^2\text{V}^{-1}\text{s}^{-1}$... 1 Edit Delete
16606 $\text{The current in a wire varies with time according to the equation } I = (4 + 2t), \text{ where } I \text{ is in ampere and } t \text{ is in seconds. The quantity of charge which has passed through a cross-section of the wire during the time } t = 2 \text{ s to } t = 6 \text{ s will be:}$ 1 118 Recommended Questions $60 \text{ C}$, $24 \text{ C}$... 3 Edit Delete
16605 $\text{The current in a wire varies with time according to the relation } i = (3 + 2t) \text{ A.}$ $\text{The amount of charge passing a cross section of the wire in the time interval } t = 0 \text{ to } t = 4.0 \text{ s would be: (where } t \text{ is time in seconds)}$ 1 118 Recommended Questions $28 \text{ C}$, $30.5 \text{ C}$... 1 Edit Delete
16604 $\text{If the potential difference across ends of a metallic wire is doubled, the drift velocity of charge carriers will become:}$ 1 118 Recommended Questions $\text{double}$, $\text{half}$... 1 Edit Delete
16603 $\text{The equivalent capacitance of the following arrangement is:}$ $\begin{array}{c} 3\ \mu\text{F} \quad 3\ \mu\text{F} \\ 45\ \mu\text{F} \quad 6\ \mu\text{F} \\ 6\ \mu\text{F} \quad 63\ \mu\text{F} \\ 9\ \mu\text{F} \quad 9\ \mu\text{F} \end{array}$ 1 117 Recommended Questions $18\ \mu\text{F}$, $9\ \mu\text{F}$... 2 Edit Delete
16602 $\text{A bullet of mass } 2 \text{ gm has a charge of } 2 \, \mu\text{C. Through what potential difference must it be accelerated, starting from rest, to acquire a speed of } 10 \, \text{m/s?}$ 1 117 Recommended Questions $50 \, \text{kV}$, $5 \, \text{V}$... 1 Edit Delete
16601 $\text{Four point charges } -Q, -q, 2q \text{ and } 2Q \text{ are placed, one at each corner of the square.}$ $\text{The relation between } Q \text{ and } q \text{ for which the potential at the center of the square is zero, is:}$ 1 117 Recommended Questions $Q = -q$, $Q = -\frac{1}{q}$... 1 Edit Delete
16600 $\text{How much kinetic energy will be gained by an } \alpha\text{-particle in going from a point at } 70 \text{ V to another point at } 50 \text{ V?}$ 1 117 Recommended Questions $40 \text{ eV}$, $40 \text{ keV}$... 1 Edit Delete
16599 $\text{Three charges, each } +q, \text{ are placed at the corners of an equilateral triangle } ABC \text{ of sides } BC, AC, \text{ and } AB. D \text{ and } E \text{ are the mid-points of } BC \text{ and } CA. \text{ The work done in taking a charge } Q \text{ from } D \text{ to } E \text{ is:}$ 1 117 Recommended Questions $\frac{3qQ}{4\pi\varepsilon_0 a}$, $\frac{3qQ}{8\pi\varepsilon_0 a}$... 4 Edit Delete
16598 $\text{A parallel plate capacitor of capacitance } C \text{ is connected to a battery and is charged to a potential difference } V. \text{ Another capacitor of capacitance } 2C \text{ is connected to another battery and is charged to potential difference } 2V. \text{ The charging batteries are now disconnected and the capacitors are connected in parallel to each other in such a way that the positive terminal of one is connected to the negative terminal of the other. The final energy of the configuration is?}$ 1 117 Recommended Questions $\text{zero}$, $\frac{25CV^2}{6}$... 3 Edit Delete
16597 $100$ capacitors each having a capacity of $10 \, \mu \text{F}$ are connected in parallel and are charged by a potential difference of $100 \, \text{kV}$. The energy stored in the capacitors and the cost of charging them, if electrical energy costs $108$ paise per kWh, will be? 1 117 Recommended Questions $10^7 \text{ joule and } 300 \text{ paise}$, $5 \times 10^6 \text{ joule and } 300 \text{ paise}$... 3 Edit Delete
16596 $\text{Maximum charge stored on a metal sphere of radius 15 cm may be } 7.5 \, \mu\text{C} . \text{ The potential energy of the sphere in this case is:}$ 1 117 Recommended Questions $9.67 \, \text{J}$, $0.25 \, \text{J}$... 4 Edit Delete
16595 $\text{A metallic sphere of capacitance } C_1, \text{ charged to electric potential } V_1 \text{ is connected by a metal wire to another metallic sphere of capacitance } C_2 \text{ charged to electric potential } V_2. \text{ The amount of heat produced in connecting the wire during the process is:}$ 1 117 Recommended Questions $\frac{C_1C_2}{2(C_1+C_2)}(V_1+V_2)^2$, $\frac{C_1C_2}{2(C_1+C_2)}(V_1-V_2)^2$... 2 Edit Delete
16594 $\text{A capacitor of } 2 \, \mu\text{F is charged as shown in the figure. When the switch } S \text{ is turned to position 2, the percentage of its stored energy dissipated is:}$ 1 117 Recommended Questions $20\%$, $75\%$... 3 Edit Delete
16593 $\text{In the circuit shown in the figure, the energy stored in } 6 \, \mu\text{F capacitor will be:}$ 1 117 Recommended Questions $48 \times 10^{-6} \, \text{J}$, $32 \times 10^{-6} \, \text{J}$... 1 Edit Delete
16592 $\text{Two condensers of capacity } 0.3 \, \mu\text{F} \text{ and } 0.6 \, \mu\text{F} \text{ are connected in series.}$ $\text{The combination is connected across a potential of } 6 \, \text{V.}$ $\text{The ratio of energies stored by the condensers will be:}$ 1 117 Recommended Questions $\frac{1}{2}$, $2$... 2 Edit Delete
16591 $\text{A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of the resulting system:}$ 1 117 Recommended Questions $\text{increases by a factor of 4.}$, $\text{decreases by a factor of 2.}$... 2 Edit Delete
16590 $\text{A parallel plate air capacitor of capacitance } C \text{ is connected to a cell of emf } V \text{ and then disconnected from it. A dielectric slab of dielectric constant } K, \text{ which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?}$ 1 117 Recommended Questions $\text{The potential difference between the plates decreases } K \text{ times}$, $\text{The energy stored in the capacitor decreases } K \text{ times}$... 4 Edit Delete
16589 $\text{A series combination of } n_1 \text{ capacitors, each of value } C_1, \text{ is charged by a source of potential difference } 4 \text{ V.}$ $\text{When another parallel combination of } n_2 \text{ capacitors, each of value } C_2, \text{ is charged by a source of potential difference } V, \text{ it has the same (total) energy stored in it as the first combination has.}$ $\text{The value of } C_2 \text{ in terms of } C_1 \text{ is:}$ 1 117 Recommended Questions $\frac{2C_1}{n_1n_2}$, $16 \frac{n_2}{n_1} C_1$... 4 Edit Delete
16588 $\text{Five equal capacitors connected in series have a resultant capacitance of } 4 \, \mu\text{F.}$ $\text{The total energy stored in these when these are connected in parallel and charged to } 400 \, \text{V is:}$ 1 117 Recommended Questions $1 \, \text{J}$, $8 \, \text{J}$... 2 Edit Delete
16587 $\text{The energy and capacity of a charged parallel plate capacitor are } E \text{ and } C \text{ respectively. If a dielectric slab of } E_r = 6 \text{ is inserted in it, then the energy and capacity become:}$ $\text{(Assuming the charge on plates remains constant)}$ 1 117 Recommended Questions $6E, 6C$, $E, C$... 3 Edit Delete
16586 $\text{Surface charge density on the positive plate of a charged parallel plate capacitor is } \sigma. \text{ Energy density in the electric field of the capacitor is:}$ 1 117 Recommended Questions $\frac{\sigma^2}{2\varepsilon_0}$, $\frac{\sigma^2}{2\varepsilon_0}$... 2 Edit Delete
16585 $\text{A parallel plate condenser has a uniform electric field } E (\text{V/m}) \text{ in the space between the plates. If the distance between the plates is } d (\text{m}) \text{ and area of each plate is } A (\text{m}^2), \text{ the energy (joule) stored in the condenser is:}$ 1 117 Recommended Questions $\frac{1}{2} \varepsilon_0 E^2$, $\varepsilon_0 E A d$... 3 Edit Delete
16584 $\text{Two condensers, one of capacity } C \text{ and the other of capacity } \frac{C}{2} \text{ are connected to a } V \text{ volt battery, as shown in the figure.}$ $\text{The energy stored in the capacitors when both condensers are fully charged will be:}$ 1 117 Recommended Questions $2CV^2$, $\frac{1}{4}CV^2$... 3 Edit Delete
16583 $\text{Given below are two statements:}$ $\text{Assertion (A): Charge on an isolated capacitor does not change by introducing dielectric between the plates of the capacitor.}$ $\text{Reason (R): Charge on an isolated system is conserved.}$ 1 117 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
16582 $\text{An air capacitor of capacity } C = 10 \, \mu\text{F is connected to a constant voltage battery of } 12 \, \text{V.}$ $\text{Now the space between the plates is filled with a liquid of dielectric constant } 5.$ $\text{The charge that flows now from battery to the capacitor is:}$ 1 117 Recommended Questions $120 \, \mu\text{C}$, $699 \, \mu\text{C}$... 3 Edit Delete
16581 $\text{Two identical parallel plate capacitors are placed in series and connected to a constant voltage source of } V_0 \text{ volt.}$ $\text{If one of the capacitors is completely immersed in a liquid with dielectric constant } K, \text{ the potential difference between the plates of the other capacitor will change to:}$ 1 117 Recommended Questions $\frac{K+1}{K} V_0$, $\frac{K}{K+1} V_0$... 2 Edit Delete
16580 $\text{If the dielectric constant and dielectric strength be denoted by } k \text{ and } x \text{ respectively, then a material suitable for use as a dielectric in a capacitor must have:}$ $1. \text{ high } k \text{ and high } x.$ $2. \text{ high } k \text{ and low } x.$ $3. \text{ low } k \text{ and low } x.$ $4. \text{ low } k \text{ and high } x.$ 1 117 Recommended Questions $\text{high } k \text{ and high } x.$, $\text{high } k \text{ and low } x.$... 1 Edit Delete
16579 $\text{The capacitance of a parallel plate capacitor with air as a medium is } 6 \, \mu\text{F.}$ $\text{With the introduction of a dielectric medium, the capacitance becomes } 30 \, \mu\text{F.}$ $\text{The permittivity of the medium is:}$ $\left( \varepsilon_0 = 8.85 \times 10^{-12} \, \text{C}^2\text{N}^{-1}\text{m}^{-2} \right)$ 1 117 Recommended Questions $1.77 \times 10^{-12} \, \text{C}^2\text{N}^{-1}\text{m}^{-2}$, $0.44 \times 10^{-10} \, \text{C}^2\text{N}^{-1}\text{m}^{-2}$... 2 Edit Delete
16578 $\text{A parallel plate condenser is filled with two dielectrics as shown. Area of each plate is } A \text{ metre}^2 \text{ and the separation is } t \text{ metre. The dielectric constants are } k_1 \text{ and } k_2 \text{ respectively. Its capacitance in farad will be:}$ 1 117 Recommended Questions $\frac{\varepsilon_0 A}{t} \left( k_1 + k_2 \right)$, $\frac{\varepsilon_0 A}{t} \frac{\left( k_1 + k_2 \right)}{2}$... 2 Edit Delete
16577 $\text{A parallel plate capacitor is made of two dielectric blocks in series. One of the blocks has thickness } d_1 \text{ and dielectric constant } K_1 \text{ and the other has thickness } d_2 \text{ and dielectric constant } K_2, \text{ as shown in the figure. This arrangement can be thought of as a dielectric slab of thickness } d = d_1 + d_2 \text{ and effective dielectric constant } K. \text{ The } K \text{ is:}$ 1 117 Recommended Questions $\frac{K_1 d_1 + K_2 d_2}{d_1 + d_1}$, $\frac{K_1 d_1 + K_2 d_2}{K_1 + K_2}$... 3 Edit Delete
16576 $\text{The insulation property of air breaks down at } E = 3 \times 10^6 \text{ V/m.}$ $\text{The maximum charge that can be given to a sphere of diameter } 5 \text{ m is approximately:}$ 1 117 Recommended Questions $2 \times 10^{-5} \text{ C}$, $2.2 \times 10^{-4} \text{ C}$... 3 Edit Delete
16575 $\text{The dielectric constant of pure water is } 81. \text{ Its permittivity will be: (in MKS units)}$ 1 117 Recommended Questions $1.02 \times 10^{-13}$, $8.86 \times 10^{-12}$... 3 Edit Delete
16574 $\text{A parallel plate capacitor has capacitance } C. \text{ If it is equally filled with parallel layers of materials of dielectric constants } K_1 \text{ and } K_2, \text{ its capacity becomes } C_1. \text{ The ratio of } C_1 \text{ to } C \text{ is:}$ 1 117 Recommended Questions $K_1 + K_2$, $\frac{K_1 K_2}{K_1 - K_2}$... 4 Edit Delete
16573 $\text{A parallel plate capacitor with cross-sectional area } A \text{ and separation } d \text{ has air between the plates. An insulating slab of the same area but the thickness of } \frac{d}{2} \text{ is inserted between the plates as shown in the figure, having a dielectric constant, } K = 4. \text{ The ratio of the new capacitance to its original capacitance will be:}$ 1 117 Recommended Questions $2 : 1$, $8 : 5$... 2 Edit Delete
16572 $\text{Two thin dielectric slabs of dielectric constants } K_1 \text{ and } K_2 (K_1 < K_2) \text{ are inserted between plates of a parallel capacitor, as shown in the figure.}$ $\text{The variation of the electric field } E \text{ between the plates with distance } d \text{ as measured from the plate } P \text{ is correctly shown by:}$ 1 117 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 3 Edit Delete
16571 $\text{The capacitance of a parallel plate capacitor is } C. \text{ If a dielectric slab of thickness equal to one-fourth of the plate separation and dielectric constant } K \text{ is inserted between the plates, then the new capacitance will be:}$ 1 117 Recommended Questions $\frac{KC}{2(K+1)}$, $\frac{2KC}{K+1}$... 4 Edit Delete
16570 $\text{Two parallel metal plates having charges } +Q \text{ and } -Q, \text{ face each other at a certain distance between them. If the plates are now dipped in the kerosene oil tank, the electric field between the plates will:}$ $1. \text{ increase}$ $2. \text{ decrease}$ $3. \text{ remain the same}$ $4. \text{ become zero}$ 1 117 Recommended Questions $\text{increase}$, $\text{decrease}$... 2 Edit Delete
16569 $\text{A parallel plate condenser has a capacitance } 50 \, \mu\text{F} \text{ in air and } 110 \, \mu\text{F} \text{ when immersed in an oil. The dielectric constant } k \text{ of the oil is:}$ 1 117 Recommended Questions $0.45$, $0.55$... 4 Edit Delete
16568 $\text{In the circuit shown in the figure initially key } K_1 \text{ is closed and key } K_2 \text{ is open.}$ $\text{Then } K_1 \text{ is opened and } K_2 \text{ is closed (order is important).}$ $\text{[Take } Q_1 \text{ and } Q_2 \text{ as charges on } C_1 \text{ and } C_2 \text{ and } V_1 \text{ and } V_2 \text{ as voltage respectively.]}$ $\text{Then,}$ 1 117 Recommended Questions $\text{(a) charge on } C \text{ gets redistributed such that } V_1 = V_2$, $\text{(b) charge on } C \text{ gets redistributed such that } Q_1 = Q_2$... 1 Edit Delete
16567 $\text{A capacitor of } 1 \, \mu\text{F} \text{ withstands a maximum voltage of } 6 \text{ kilovolts while another capacitor of } 2 \, \mu\text{F} \text{ withstands a maximum voltage of } 4 \text{ kilovolts. If the two capacitors are connected in series, the system will withstand a maximum voltage of:}$ 1 117 Recommended Questions $2 \, \text{kV}$, $4 \, \text{kV}$... 4 Edit Delete
16566 $\text{A circuit has section } AB \text{ as shown in figure. The emf of the cell is } 10 \text{ V.}$ $\text{The potential difference } V_{AB} = 5 \text{ V. The charge on the capacitor } C_1 \text{ is:}$ 1 117 Recommended Questions $10 \, \mu\text{C}$, $5 \, \mu\text{C}$... 1 Edit Delete
16565 $\text{How many capacitors each of } 8 \, \mu\text{F and } 250 \, \text{V are required to form a composite capacitor of } 16 \, \mu\text{F and } 1 \, \text{kV?}$ 1 117 Recommended Questions $16$, $8$... 4 Edit Delete
16564 $\text{In the given circuit if point } C \text{ is connected to the earth and a potential of } +2000 \text{ V is given to the point } A, \text{ the potential at } B \text{ is:}$ 1 117 Recommended Questions $1500 \text{ V}$, $1000 \text{ V}$... 3 Edit Delete
16563 $\text{Three capacitors } A, B \text{ and } C \text{ are connected in a circuit as shown in Fig. What is the charge in } \mu\text{C on the capacitor } B:$ $\begin{array}{c} \text{7 V} \\ \end{array}$ $\begin{array}{c} A \\ \text{2 } \mu\text{F} \\ \end{array}$ $\begin{array}{c} B \\ \text{3 } \mu\text{F} \\ \end{array}$ $\begin{array}{c} C \\ \text{4 } \mu\text{F} \\ \end{array}$ $\begin{array}{c} \text{6 V} \\ \end{array}$ 1 117 Recommended Questions $\frac{1}{3}$, $\frac{2}{3}$... 2 Edit Delete
16562 $\text{In the circuit diagram shown all the capacitors are in } \mu F. \text{ The equivalent}$ $\text{capacitance between points, } A \text{ and } B \text{ is (in } \mu F):$ 1 117 Recommended Questions $\frac{14}{5}$, $7.5$... 1 Edit Delete
16561 $\text{Two capacitors of capacity } 2 \, \mu\text{F} \text{ and } 3 \, \mu\text{F} \text{ are charged to the same potential difference of } 6 \, \text{V.}$ $\text{Now they are connected with opposite polarity as shown.}$ $\text{After closing switches } S_1 \text{ and } S_2, \text{ their final potential difference becomes:}$ 1 117 Recommended Questions $\text{zero}$, $\frac{4}{3} \, \text{V}$... 4 Edit Delete
16560 $\text{Five identical plates each of area } A \text{ are joined as shown in the figure.}$ $\text{The distance between the plates is } d. \text{ The plates are connected to a potential}$ $\text{difference of } V \text{ volts. The charge on plates 1 and 4 will be:}$ 1 117 Recommended Questions $\frac{\varepsilon_0 A V}{d}, \frac{2 \varepsilon_0 A V}{d}$, $\frac{2 \varepsilon_0 A V}{d}, \frac{\varepsilon_0 A V}{d}$... 3 Edit Delete
16559 $\text{The equivalent capacitance between the points } A \text{ and } B \text{ in the given network is:}$ $\begin{array}{c} \includegraphics[width=0.5\textwidth]{circuit.png} \end{array}$ 1 117 Recommended Questions $25 \, \mu\text{F}$, $16 \, \mu\text{F}$... 3 Edit Delete
16558 $\text{Four capacitors each of capacity } 3 \mu F \text{ are connected as shown in the adjoining figure.}$ $\text{The ratio of equivalent capacitance between } A \text{ and } B \text{ and between } A \text{ and } C \text{ will be:}$ 1 117 Recommended Questions $4 : 3$, $3 : 4$... 1 Edit Delete
16557 $\text{The equivalent capacitance between } A \text{ and } B \text{ is:}$ 1 117 Recommended Questions $2 \, \mu\text{F}$, $3 \, \mu\text{F}$... 4 Edit Delete
16556 $\text{In the connections shown in the adjoining figure, the equivalent capacity between } A \text{ and } B \text{ will be:}$ 1 117 Recommended Questions $10.8 \, \mu\text{F}$, $69 \, \mu\text{F}$... 4 Edit Delete
16555 $\text{A network of four capacitors of capacity equal to}$ $C_1 = C, C_2 = 2C, C_3 = 3C \text{ and } C_4 = 4C$ $\text{are connected in a battery as shown in the figure.}$ $\text{The ratio of the charges on } C_2 \text{ and } C_4 \text{ is:}$ 1 117 Recommended Questions $\frac{22}{3}$, $\frac{3}{22}$... 2 Edit Delete
16554 $\text{A capacitor of capacity } C_1 \text{ is charged up to } V \text{ volt and then connected to an uncharged capacitor } C_2. \text{ Then final P.D. across each will be:}$ 1 117 Recommended Questions $\frac{C_2 V}{C_1 + C_2}$, $\frac{C_1 V}{C_1 + C_2}$... 2 Edit Delete
16553 $\text{The equivalent capacitance between points } a \text{ and } b \text{ in the network shown below is:}$ 1 117 Recommended Questions $5 \text{ C}$, $4 \text{ C}$... 4 Edit Delete
16552 $\text{The equivalent capacitance across } A \text{ and } B \text{ in the given figure is:}$ 1 117 Recommended Questions $\frac{3}{2}C$, $C$... 4 Edit Delete
16551 $\text{Three capacitors each of capacitance } C \text{ and of breakdown voltage } V \text{ are joined in series. The capacitance and breakdown voltage of the combination will be:}$ 1 117 Recommended Questions $\frac{C}{3}, \frac{V}{3}$, $3C, \frac{V}{3}$... 3 Edit Delete
16550 $\text{Two capacitors of capacitance } 6 \, \mu\text{F and } 3 \, \mu\text{F are connected in series with a battery of } 30 \, \text{V.}$ $\text{The charge on } 3 \, \mu\text{F capacitor is:}$ 1 117 Recommended Questions $3 \, \mu\text{C}$, $1.5 \, \mu\text{C}$... 3 Edit Delete
16549 $\text{Three capacitors of capacitances } 3 \, \mu\text{F}, 9 \, \mu\text{F} \text{ and } 18 \, \mu\text{F} \text{ are connected once in series and another time in parallel.}$ $\text{The ratio of equivalent capacitance in the two cases } \frac{C_s}{C_p} \text{ will be:}$ 1 117 Recommended Questions $1 : 15$, $15 : 1$... 1 Edit Delete
16548 $\text{Three capacitors each of capacity } 4 \, \mu\text{F are to be connected in such a way that the effective capacitance is } 6 \, \mu\text{F. This can be done by:}$ 1 117 Recommended Questions $\text{connecting all of them in a series.}$, $\text{connecting them in parallel.}$... 3 Edit Delete
16547 $\text{Three uncharged capacitors of capacities } C_1, C_2 \text{ and } C_3 \text{ are connected to one another as shown in the figure.}$ $\text{If points A, B, and D, are at potential } V_1, V_2 \text{ and } V_3 \text{ then the potential at O will be:}$ 1 117 Recommended Questions $\frac{V_1C_1 + V_2C_2 + V_3C_3}{C_1 + C_2 + C_3}$, $\frac{V_1 + V_2 + V_3}{C_1 + C_2 + C_3}$... 1 Edit Delete
16546 $\text{The effective capacity of the network between terminals } A \text{ and } B \text{ is:}$ 1 117 Recommended Questions $6 \, \mu\text{F}$, $20 \, \mu\text{F}$... 1 Edit Delete
16545 $\text{Choose the correct statements among the following:}$ $\text{A: Free electrons move always from a region of higher potential to a region of lower potential.}$ $\text{B: The capacitance of the capacitor does not depend upon the nature of the conducting material of the plates of the capacitor.}$ 1 117 Recommended Questions $\text{only A}$, $\text{only B}$... 2 Edit Delete
16544 $\text{The figure shows charge } (q) \text{ versus voltage } (V) \text{ graph for series and parallel}$ $\text{combination of two given capacitors. The capacitances are:}$ 1 117 Recommended Questions $50 \, \mu\text{F} \text{ and } 30 \, \mu\text{F}$, $20 \, \mu\text{F} \text{ and } 30 \, \mu\text{F}$... 4 Edit Delete
16543 $\text{A parallel plate capacitor is connected to a battery as shown in the figure.}$ $\text{Consider two situations.}$ $\text{A: Key } K \text{ is kept closed and plates of capacitors are moved apart using the insulating handle.}$ $\text{B: Key } K \text{ is opened and plates of capacitors are moved apart using the insulating handle.}$ $\text{Choose the correct option(s):}$ $\text{a. In A, } Q \text{ remains the same but } C \text{ changes.}$ $\text{b. In B, } V \text{ remains the same but } C \text{ changes.}$ $\text{c. In A, } V \text{ remains the same and hence } Q \text{ changes.}$ $\text{d. In B, } Q \text{ remains the same and hence } V \text{ changes.}$ 1 117 Recommended Questions $(a) \text{ and } (b)$, $(a) \text{ and } (d)$... 4 Edit Delete
16542 $\text{The electrostatic force between the metal plates of an isolated parallel plate}$ $\text{capacitor } C \text{ having a charge } Q \text{ and area } A \text{ is:}$ 1 117 Recommended Questions $\text{independent of the distance between the plates.}$, $\text{linearly proportional to the distance between the plates.}$... 1 Edit Delete
16541 $\text{In the given figure if } V = 4 \text{ volt each plate of the capacitor has a surface area of } 10^{-2} \text{ m}^2 \text{ and the plates are } 0.1 \times 10^{-3} \text{ m apart, then the number of excess electrons on the negative plate is:}$ 1 117 Recommended Questions $5.15 \times 10^9$, $2.21 \times 10^{10}$... 2 Edit Delete
16540 $\text{A parallel plate air capacitor has a capacity of } C, \text{ the distance of separation between plates is } d \text{ and potential difference } V \text{ is applied between the plates.}$ $\text{The force of attraction between the plates of the parallel plate air capacitor is:}$ 1 117 Recommended Questions $\frac{C^2V^2}{2d}$, $\frac{CV^2}{2d}$... 2 Edit Delete
16539 $\text{A parallel plate air capacitor is charged to potential difference } V. \text{ After disconnecting the battery, the distance between the plates of the capacitor is increased using an insulating handle. As a result the potential difference between the plates:}$ 1 117 Recommended Questions $\text{decreases.}$, $\text{increases.}$... 2 Edit Delete
16538 $\text{The electric potential difference between two parallel plates is } 2000 \text{ V. If the plates are separated by } 2 \text{ mm, what is the magnitude of the electrostatic force on a charge of } 4 \times 10^{-6} \text{ C located midway between the plates?}$ 1 117 Recommended Questions $4 \text{ N}$, $6 \text{ N}$... 1 Edit Delete
16537 $\text{What is the area of the plates of a } 2 \text{ F parallel plate capacitor, given that the separation between the plates is } 0.5 \text{ cm?}$ 1 117 Recommended Questions $1100 \text{ km}^2$, $1130 \text{ km}^2$... 2 Edit Delete
16536 $\text{Two concentric conducting spherical shells carry charge } Q \text{ each.}$ $\text{The inner shell is earthed.}$ $\text{The charge that flows into the earth is:}$ 1 117 Recommended Questions $Q$, $\frac{3Q}{2}$... 2 Edit Delete
16535 $\text{Two concentric metallic spherical shells } A \text{ and } B \text{ of radii } a \text{ and } b \text{ respectively } (b > a) \text{ are arranged such that outer shell is earthed and inner shell is charged to } Q. \text{ Charge on the outer surface of outer shell will be:}$ 1 117 Recommended Questions $-\frac{Qa}{b}$, $Q \left[ 1 - \frac{a}{b} \right]$... 4 Edit Delete
16534 $\text{Given below are two statements:}$ $\text{Assertion (A): A metallic shield in the form of a hollow shell may be built to block an electric field.}$ $\text{Reason (R): In a hollow spherical shield, the electric field inside it is zero at every point.}$ 1 117 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
16533 $\text{A conducting sphere of radius } R \text{ is given a charge } Q. \text{ The electric potential and field at the centre of the sphere respectively are:}$ 1 117 Recommended Questions $\text{Zero and } \frac{Q}{4\pi\varepsilon_0 R^2}$, $\frac{Q}{4\pi\varepsilon_0 R} \text{ and zero}$... 2 Edit Delete
16532 $\text{Which of the following statements is correct regarding the electrostatics of conductors?}$ 1 117 Recommended Questions $\text{The interior of the conductor with no cavity can have no excess charge in the static situation.}$, $\text{The electrostatic potential is constant throughout the volume of the conductor.}$... 4 Edit Delete
16531 $\text{An electric dipole with dipole moment } \vec{p} = \left(3\hat{i} + 4\hat{j}\right) \times 10^{-30} \text{ C-m is placed in an electric field } \vec{E} = 4000\hat{i} \text{ N/C. An external agent turns the dipole slowly until its electric dipole moment becomes } \left(-4\hat{i} + 3\hat{j}\right) \times 10^{-30} \text{ C-m.}$ $\text{The work done by the external agent is equal to:}$ 1 117 Recommended Questions $4 \times 10^{-28} \text{ J}$, $-4 \times 10^{-28} \text{ J}$... 3 Edit Delete
16530 $\text{A short electric dipole has a dipole moment of } 16 \times 10^{-9} \text{ C-m. The electric potential due to the dipole at a point at a distance of } 0.6 \text{ m from the centre of the dipole situated on a line making an angle of } 60^\circ \text{ with the dipole axis is:}$ $\left( \frac{1}{4\pi\varepsilon_0} = 9 \times 10^9 \text{ N-m}^2/\text{C}^2 \right)$ 1 117 Recommended Questions $200 \text{ V}$, $400 \text{ V}$... 1 Edit Delete
16529 $\text{An electric dipole has the magnitude of its charges as } q \text{ and its dipole moment is } p. \text{ It is placed in a uniform electric field } \mathbf{E}. \text{ If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively:}$ 1 117 Recommended Questions $q \cdot E \text{ and } p \cdot E$, $\text{zero and minimum}$... 2 Edit Delete
16528 $\text{An electric dipole of moment } \vec{p} \text{ is lying along a uniform electric field } \vec{E}. \text{ The work done in rotating the dipole by } 90^\circ \text{ is:}$ 1 117 Recommended Questions $\sqrt{2}pE$, $\frac{pE}{2}$... 4 Edit Delete
16527 $\text{An electric dipole of moment } p \text{ is placed in an electric field of intensity } E. \text{ The dipole acquires a position such that the axis of the dipole makes an angle } \theta \text{ with the direction of the field. Assuming that the potential energy of the dipole to be zero when } \theta = 90^\circ, \text{ the torque and the potential energy of the dipole will respectively be:}$ 1 117 Recommended Questions $pE \sin \theta, -pE \cos \theta$, $pE \sin \theta, -2pE \cos \theta$... 1 Edit Delete
16526 $\text{The potential field of an electric field } E = y\hat{i} + x\hat{j} \text{ is:}$ 1 117 Recommended Questions $V = -x + y + \text{constant}$, $V = \text{constant}$... 4 Edit Delete
16525 $\text{Consider two points 1 and 2 in a region outside a charged sphere. Two points are not very far away from the sphere. If } \mathbf{E} \text{ and } V \text{ represent the electric field vector and the electric potential, which of the following is not possible?}$ 1 117 Recommended Questions $|\mathbf{E}_1| = |\mathbf{E}_2|, V_1 = V_2$, $\mathbf{E}_1 \neq \mathbf{E}_2, V_1 \neq V_2$... 4 Edit Delete
16524 $\text{An electric field } \vec{E} = 10x\hat{i} \text{ exists in a certain region of space. Then the potential difference } V = V_0 - V_A, \text{ where } V_0 \text{ is the potential at the origin and } V_A \text{ is the potential at } x = 2 \text{ m is:}$ 1 117 Recommended Questions $10 \text{ V}$, $-20 \text{ V}$... 3 Edit Delete
16523 $\text{The variation of potential with distance } x \text{ from a fixed point is shown in the figure. The electric field at } x = 13 \text{ m is:}$ 1 117 Recommended Questions $7.5 \text{ V/m}$, $-7.5 \text{ V/m}$... 3 Edit Delete
16522 $\text{Work done to carry a negatively charged body in direction of the electric field:}$ $\text{(assuming no other force is acting on the body)}$ 1 117 Recommended Questions $\text{is always negative.}$, $\text{maybe negative.}$... 3 Edit Delete
16521 $\text{In a region of constant potential:}$ $\begin{array}{ll} (a): & \text{the electric field is uniform} \\ (b): & \text{the electric field is zero} \\ (c): & \text{there can be no charge inside the region} \\ (d): & \text{the electric field shall necessarily change if a charge is placed outside the region} \end{array}$ $\text{Choose the correct statement(s):}$ 1 117 Recommended Questions $(b) \text{ and } (c)$, $(a) \text{ and } (c)$... 1 Edit Delete
16520 $\text{When a negative charge is released and moves in the electric field, it moves towards a position of:}$ 1 117 Recommended Questions $\text{lower electric potential and lower potential energy.}$, $\text{lower electric potential and higher potential energy.}$... 3 Edit Delete
16519 $\text{The figure shows some of the equipotential surfaces. The magnitude and direction of the electric field are given by:}$ 1 117 Recommended Questions $200 \text{ V/m, making an angle } 120^\circ \text{ with the } x\text{-axis}$, $100 \text{ V/m, pointing towards the negative } x\text{-axis}$... 1 Edit Delete
16518 $\text{The electric field intensity and the electric potential at a point are } E \text{ and } V \text{ respectively. Which of the following is correct?}$ 1 117 Recommended Questions $\text{If } E \neq 0, V \text{ cannot be zero}$, $\text{If } V \neq 0, E \text{ cannot be zero}$... 3 Edit Delete
16517 $\text{The electric potential at a point in free space due to a charge } Q \text{ coulomb is } Q \times 10^{11} \text{ V. The electric field at that point is:}$ 1 117 Recommended Questions $4\pi\varepsilon_0 Q \times 10^{22} \text{ V/m}$, $12\pi\varepsilon_0 Q \times 10^{20} \text{ V/m}$... 1 Edit Delete
16516 $\text{In a certain region of space with volume } 0.2 \text{ m}^3, \text{ the electric potential is found to be } 5 \text{ V throughout. The magnitude of the electric field in this region is:}$ 1 117 Recommended Questions $0.5 \text{ N/C}$, $1 \text{ N/C}$... 4 Edit Delete
16515 $\text{The electric potential } V \text{ at any point } (x, y, z), \text{ all in meters in space is given by } V = 4x^2 \text{ volt.}$ $\text{The electric field at the point } (1, 0, 2) \text{ is:}$ 1 117 Recommended Questions $8 \, \text{V/m}, \text{ along the negative } x\text{-axis}$, $8 \, \text{V/m}, \text{ along the positive } x\text{-axis}$... 1 Edit Delete
16514 $A, B \text{ and } C \text{ are three points in a uniform electric field. The electric potential is:}$ 1 117 Recommended Questions $\text{maximum at } A$, $\text{maximum at } B$... 2 Edit Delete
16513 $\text{In a certain charge distribution, all points having zero potential can be joined by a circle } S. \text{ The points inside } S \text{ have positive potential, and points outside } S \text{ have a negative potential. A positive charge, which is free to move, is placed inside } S. \text{ What is the correct statement about } S:$ 1 117 Recommended Questions $\text{It will remain in equilibrium}$, $\text{It can move inside } S, \text{ but it cannot cross } S$... 3 Edit Delete
16512 $\text{Equipotential at a great distance from a collection of charges whose total sum is not zero are approximately:}$ 1 117 Recommended Questions $\text{spheres}$, $\text{planes}$... 1 Edit Delete
16511 $\text{Equipotential surfaces:}$ $\text{a. are closer in regions of large electric fields compared}$ \text{ to regions of lower electric fields.}$ $\text{b. will be more crowded near the sharp edges of a conductor.}$ $\text{c. will be more crowded near regions of large charge densities.}$ $\text{d. will always be equally spaced.}$ $\text{Choose the correct statement(s):}$ 1 117 Recommended Questions $(\text{a}), (\text{b}) \text{ and } (\text{c})$, $(\text{a}), (\text{c}) \text{ and } (\text{d})$... 1 Edit Delete
16510 $\text{The electric potential in a certain region of space is given by } V = -8x^2 + 4x, \text{ where } V \text{ is in volt and } x \text{ is in metre. In this region, the equipotential surface is:}$ 1 117 Recommended Questions $\text{plane parallel to } yz \text{ plane}$, $\text{plane parallel to the } x\text{-axis}$... 1 Edit Delete
16509 $\text{Some equipotential surfaces are shown in the figure. The electric field at points } A, B \text{ and } C \text{ are respectively:}$ 1 117 Recommended Questions $1 \text{ V/cm}, \frac{1}{2} \text{ V/cm}, 2 \text{ V/cm (all along +ve X-axis)}$, $1 \text{ V/cm}, \frac{1}{2} \text{ V/cm}, 2 \text{ V/cm (all along -ve X-axis)}$... 3 Edit Delete
16508 $\text{Consider a uniform electric field in the } z\text{-direction. The potential is constant:}$ $\text{a. in all space}$ $\text{b. for any } x \text{ for a given } z$ $\text{c. for any } y \text{ for a given } z$ $\text{d. on the } x-y \text{ plane for a given } z$ 1 117 Recommended Questions $\text{(a), (b), (c)}$, $\text{(a), (c), (d)}$... 3 Edit Delete
16507 $\text{A cube of a metal is given a positive charge } Q. \text{ For the above system, which of the following statements is true?}$ 1 117 Recommended Questions $\text{The electric potential at the surface of the cube is zero.}$, $\text{The electric potential within the cube is zero.}$... 3 Edit Delete
16506 $\text{The angle between equipotential surface and electric lines of force is:}$ 1 117 Recommended Questions $\text{zero}$, $180^\circ$... 3 Edit Delete
16505 $\text{The diagrams below show regions of equipotentials.}$ $\text{A positive charge is moved from A to B in each diagram. Then:}$ 1 117 Recommended Questions $\text{the maximum work is required to move } q \text{ in figure (iii).}$, $\text{in all four cases, the work done is the same.}$... 2 Edit Delete
16504 $\text{The work done to move a charge along an equipotential from } A \text{ to } B:$ 1 117 Recommended Questions $\text{can not be defined as } - \int_{A}^{B} \vec{E} \cdot \vec{dl}$, $\text{must be defined as } - \int_{A}^{B} \vec{E} \cdot \vec{dl}$... 3 Edit Delete
16503 $\text{On rotating a point charge having a charge } q \text{ around a charge } Q \text{ in a circle of radius } r, \text{ the work done will be:}$ 1 117 Recommended Questions $q \times 2\pi r$, $\frac{q \times 2\pi Q}{r}$... 3 Edit Delete
16502 $\text{A charge } +q \text{ is fixed at each of the points } x = x_0, x = 3x_0, x = 5x_0 \ldots \text{ infinite, on the x-axis, and a charge } -q \text{ is fixed at each of the points } x = 2x_0, x = 4x_0, x = 6x_0, \ldots \text{ infinite. Here } x_0 \text{ is a positive constant. Take the electric potential at a point due to a charge } Q \text{ at a distance } r \text{ from it to be } \frac{Q}{4\pi\varepsilon_0 r}. \text{ Then, the potential at the origin due to the above system of charges is:}$ 1 117 Recommended Questions $0$, $\frac{q}{8\pi\varepsilon_0 x_0 \ln 2}$... 4 Edit Delete
16501 $\text{Three concentric spherical shells have radii } a, b, \text{ and } c \,(a < b < c) \text{ and have surface charge densities } \sigma, -\sigma, \text{ and } \sigma \text{ respectively.}$ $\text{If } V_A, V_B \text{ and } V_C \text{ denote the potential of the three shells, and } c = a + b, \text{ it can be concluded that:}$ 1 117 Recommended Questions $V_C = V_A \neq V_B$, $V_C = V_B \neq V_A$... 1 Edit Delete
16500 $\text{When a proton at rest is accelerated by a potential difference } V, \text{ its speed is found to be } v. \text{ The speed of an } \alpha\text{-particle when accelerated by the same potential difference from rest will be:}$ 1 117 Recommended Questions $v$, $\frac{v}{\sqrt{2}}$... 2 Edit Delete
16499 $\text{A positive charge } q \text{ and a negative charge } -q \text{ are placed at } x = -a \text{ and } x = +a \text{ respectively. The variation of } V \text{ along } x\text{-axis is represented by the graph:}$ 1 117 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
16498 $\text{A thin spherical conducting shell of radius } R \text{ has a charge } q. \text{ Another charge } Q \text{ is placed at the centre of the shell. The electrostatic potential at a point } P \text{ which is at a distance } \frac{R}{2} \text{ from the centre of the shell is:}$ 1 117 Recommended Questions $\frac{(q+Q)}{4\pi\varepsilon_0} \frac{2}{R}$, $\frac{2Q}{4\pi\varepsilon_0 R}$... 4 Edit Delete
16497 $\text{A conductor with a positive charge:}$ 1 117 Recommended Questions $\text{is always at +ve potential.}$, $\text{is always at zero potential.}$... 4 Edit Delete
16496 $\text{Two metallic spheres of radii 1 cm and 3 cm are given charges of}$ $-1 \times 10^{-2} \text{ C and } 5 \times 10^{-2} \text{ C, respectively.}$ $\text{If these are connected by a conducting wire, the final charge on the bigger sphere is:}$ 1 117 Recommended Questions $2 \times 10^{-2} \text{ C}$, $3 \times 10^{-2} \text{ C}$... 2 Edit Delete
16495 $\text{A hollow conducting sphere is placed in an electric field produced by a point charge placed at } P \text{ as shown in the figure. Let } V_A, V_B, V_C \text{ be the potentials at points } A, B \text{ and } C \text{ respectively. Then:}$ 1 117 Recommended Questions $V_A < V_B < V_C$, $V_A > V_B > V_C$... 4 Edit Delete
16494 $\text{A ball of mass } 1 \text{ g and charge } 10^{-7} \text{ C moves from a point } A \text{ whose potential is } 500 \text{ V to a point } B \text{ whose potential is zero.}$ $\text{If the speed of the ball at } A \text{ is } 0.51 \text{ m/s, its speed at point } B \text{ will be:}$ 1 117 Recommended Questions $0.6 \text{ m/s}$, $6 \text{ m/s}$... 1 Edit Delete
16493 $\text{The variation of electrostatic potential with radial distance } r \text{ from the centre of a positively charged metallic thin shell of radius } R \text{ is given by the graph:}$ 1 117 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 2 Edit Delete
16492 $\text{Two equal charges } q \text{ of opposite sign separated by a distance } 2a \text{ constitute an}$ $\text{electric dipole of dipole moment } p. \text{ If } P \text{ is a point at a distance } r \text{ from the}$ $\text{centre of the dipole and the line joining the centre of the dipole to this point}$ $\text{makes an angle } \theta \text{ with the axis of the dipole, then the potential at } P \text{ is given}$ $\text{by: } \left( r \gg 2a \right) , \text{ where } p = 2qa$ 1 117 Recommended Questions $V = \frac{p \cos \theta}{4 \pi \varepsilon_0 r^2}$, $V = \frac{p \cos \theta}{4 \pi \varepsilon_0 r}$... 1 Edit Delete
16491 $\text{In the figure the charge } Q \text{ is at the centre of the circle. Work done by the conservative force is maximum when another charge is taken from point } P \text{ to:}$ 1 117 Recommended Questions $K$, $L$... 1 Edit Delete
16490 $\text{Eight equally charged tiny drops are combined to form a big drop.}$ $\text{If the potential on each drop is } 10 \text{ V, then the potential of the big drop will be:}$ 1 117 Recommended Questions $40 \text{ V}$, $10 \text{ V}$... 1 Edit Delete
16489 $\text{Four electric charges } +q, +q, -q \text{ and } -q \text{ are placed at the corners of a square of side } 2L \text{ (see figure). The electric potential at the point } A, \text{ mid-way between the two charges } +q \text{ and } +q \text{ is:}$ 1 117 Recommended Questions $\frac{1}{4\pi\varepsilon_0} \frac{2q}{L} \left( 1 + \frac{1}{\sqrt{5}} \right)$, $\frac{1}{4\pi\varepsilon_0} \frac{2q}{L} \left( 1 - \frac{1}{\sqrt{5}} \right)$... 2 Edit Delete
16488 $\text{The increasing order of the electrostatic potential energies for the given system of charges is given by:}$ $\text{Q} \quad -\text{Q} \quad -\text{Q} \quad -\text{Q} \quad 2\text{Q} \quad \text{Q} \quad 2\text{Q}$ $\text{r} \quad \text{r} \quad \text{r} \quad 2\text{Q} \quad 2\text{r}$ 1 117 Recommended Questions $\text{a = d < b < c}$, $\text{b = d < c < a}$... 1 Edit Delete
16487 $\text{Ten electrons are equally spaced and fixed around a circle of radius } R. \text{ Relative to } V = 0 \text{ at infinity, the electrostatic potential } V \text{ and the electric field } \mathbf{E} \text{ at the centre } C \text{ are:}$ 1 117 Recommended Questions $V \neq 0 \text{ and } \mathbf{E} \neq 0$, $V \neq 0 \text{ and } \mathbf{E} = 0$... 2 Edit Delete
16486 $\text{In a circuit, } 5 \text{ C of charge is passed through a battery in a given time. The plates of the battery are maintained at a potential difference of } 12 \text{ V. The work done by the battery is:}$ 1 117 Recommended Questions $120 \text{ J}$, $60 \text{ J}$... 2 Edit Delete
16485 $\text{If 50 J of work must be done to move an electric charge of 2 C from a point where the potential is } -10 \text{ volts to another point where the potential is V volts, then the value of V is:}$ $1.\ 5 \text{ volts}$ $2.\ -15 \text{ volts}$ $3.\ +15 \text{ volts}$ $4.\ +10 \text{ volts}$ 1 117 Recommended Questions $5 \text{ volts}$, $-15 \text{ volts}$... 3 Edit Delete
16484 $\text{Three charges } -Q, q, \text{ and } -2Q \text{ are placed along a line as shown in the figure.}$ $\text{The system of charges will have a positive potential energy configuration when } q \text{ is placed at the midpoint of line joining } -Q \text{ and } -2Q \text{ if:}$ 1 117 Recommended Questions $q > \frac{Q}{3}$, $q < \frac{Q}{3}$... 2 Edit Delete
16483 $\text{Figure shows a ball having a charge } q \text{ fixed at a point } A. \text{ Two identical balls having charges } +q \text{ and } -q \text{ and mass } 'm' \text{ each are attached to the ends of a light rod of length } 2a. \text{ The rod is free to rotate about a fixed axis perpendicular to the plane of the paper and passing through the mid-point of the rod. The system is released from the situation as shown in the figure. The angular velocity of the rod when the rod becomes horizontal will be:}$ 1 117 Recommended Questions $\frac{\sqrt{2}q}{3\pi \varepsilon_0 ma^3}$, $\frac{q}{\sqrt{3\pi \varepsilon_0 ma^3}}$... 3 Edit Delete
16482 $\text{A charge of } 10 \text{ e.s.u. is placed at a distance of } 2 \text{ cm from a charge of } 40 \text{ e.s.u.}$ $\text{and } 4 \text{ cm from another charge of } 20 \text{ e.s.u.}$ $\text{The potential energy of the charge } 10 \text{ e.s.u. is: (in ergs)}$ 1 117 Recommended Questions $87.5$, $112.5$... 4 Edit Delete
16481 $\text{Four equal charges } Q \text{ are placed at the four corners of a square of each side } a. \text{ Work done in removing a charge } -Q \text{ from its centre to infinity is:}$ 1 117 Recommended Questions $0$, $\frac{\sqrt{2}Q^2}{4\pi\varepsilon_0 a}$... 3 Edit Delete
16480 $\text{When a particle with charge } +q \text{ is thrown with an initial velocity } v \text{ towards another stationary charge } +Q, \text{ it is repelled back after reaching the nearest distance } r \text{ from } +Q. \text{ The closest distance that it can reach if it is thrown with an initial velocity } 2v, \text{ is:}$ 1 117 Recommended Questions $\frac{r}{4}$, $\frac{r}{2}$... 1 Edit Delete
16479 $\text{An elementary particle of mass } m \text{ and charge } +e \text{ is projected with velocity } v$ $\text{at a much more massive particle of charge } Ze, \text{ where } Z > 0.$ $\text{What is the closest possible approach of the incident particle?}$ 1 117 Recommended Questions $\frac{Ze^2}{2\pi\varepsilon_0 mv^2}$, $\frac{Ze}{4\pi\varepsilon_0 mv^2}$... 1 Edit Delete
16478 $\text{In a hydrogen atom, the electron and proton are bound at a distance of about } 0.53 \, \text{\AA}. \text{ The potential energy of the system in eV is:}$ $\text{(taking the zero of the potential energy at an infinite separation of the electron from the proton.)}$ 1 117 Recommended Questions $-23.1 \, \text{eV}$, $27.0 \, \text{eV}$... 3 Edit Delete
16477 $\text{Two charges } q_1 \text{ and } q_2 \text{ are placed } 30 \text{ cm apart, as shown in the figure. A third charge } q_3 \text{ is moved along the arc of a circle of radius } 40 \text{ cm from } C \text{ to } D. \text{ The change in the potential energy of the system is } \frac{q_3}{4\pi\varepsilon_0} k, \text{ where } k \text{ is:}$ 1 117 Recommended Questions $8q_2$, $8q_1$... 1 Edit Delete
16476 $\text{A charge } q_1 = 5 \times 10^{-8} \text{ C is kept at } 3 \text{ cm from a charge } q_2 = -2 \times 10^{-8} \text{ C.}$ $\text{The potential energy of the system relative to the potential energy at infinite separation is:}$ 1 117 Recommended Questions $3 \times 10^{-4} \text{ J}$, $-3 \times 10^{-4} \text{ J}$... 2 Edit Delete
16475 $\text{Three charges } Q, +q \text{ and } +q \text{ are placed at the vertices of an equilateral triangle of side } l \text{ as shown in the figure. If the net electrostatic energy of the system is zero, then } Q \text{ is equal to:}$ 1 117 Recommended Questions $-\frac{q}{2}$, $-q$... 1 Edit Delete
16474 $\text{What is the potential energy of two equal positive point charges of } 1 \, \mu\text{C each held } 1 \, \text{m apart in the air?}$ 1 117 Recommended Questions $9 \times 10^{-3} \, \text{J}$, $9 \times 10^{-3} \, \text{eV}$... 1 Edit Delete
16473 $\text{Given below are two statements:}$ $\text{Statement I:}$ $\text{Gauss's law for electric fields is a consequence of the conservation of energy.}$ $\text{Statement II:}$ $\text{Coulomb's law for electric charges leads to a conservative electric field.}$ 1 116 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 1 Edit Delete
16472 $\text{Consider a region inside where there are various types of charges but the total charge is zero. At points outside the region:}$ $\text{(a) the electric field is necessarily zero.}$ $\text{(b) the electric field is due to the dipole moment of the charge distribution only.}$ $\text{(c) the dominant electric field is } \propto \frac{1}{r^3}, \text{ for large } r, \text{ where } r \text{ is the distance from the origin in this region.}$ $\text{(d) the work done to move a charged particle along a closed path, away from the region, will be zero.}$ $\text{Which of the above statements are true?}$ 1 116 Recommended Questions $\text{(b) and (d)}$, $\text{(a) and (c)}$... 4 Edit Delete
16471 $\text{Given below are two statements:}$ $\text{Statement I: Electrostatic field lines never form closed loops.}$ $\text{Statement II: Gauss's law is particularly useful for calculating the}$ $\text{electrostatic field in systems that lack symmetry.}$ 1 116 Recommended Questions $\text{Statement I is correct while Statement II is incorrect.}$, $\text{Statement II is correct while Statement I is incorrect.}$... 1 Edit Delete
16470 $X$ and $Y$ are large, parallel conducting plates close to each other. Each face has an area $A$. $X$ is given a charge $Q$. $Y$ is without any charge. Points $A$, $B$, and $C$ are as shown in the figure. The incorrect option is: 1 116 Recommended Questions the field at $B$ is $\frac{Q}{2\varepsilon_0 A}$, the field at $B$ is $\frac{Q}{\varepsilon_0 A}$... 2 Edit Delete
16469 $\text{A point charge } q \text{ is placed at a distance } \frac{a}{2} \text{ directly above the centre of a square of side } a. \text{ The electric flux through the square (i.e., one face) is:}$ 1 116 Recommended Questions $\frac{q}{\varepsilon_0}$, $\frac{q}{\pi \varepsilon_0}$... 4 Edit Delete
16468 $\text{Two parallel infinite line charges with linear charge densities } +\lambda \text{ C/m and } +\lambda \text{ C/m are placed at a distance } R. \text{ The electric field mid-way between the two line charges is:}$ 1 116 Recommended Questions $\frac{\lambda}{2\pi\varepsilon_0 R} \text{ N/C}$, $\text{zero}$... 2 Edit Delete
16467 $\text{Consider the charge configuration and spherical Gaussian surface as shown in the figure.}$ $\text{When calculating the flux of the electric field over the spherical surface,}$ $\text{the electric field will be due to:}$ 1 116 Recommended Questions $q_2.$, $\text{only the positive charges.}$... 3 Edit Delete
16466 $\text{An isolated sphere of radius } R \text{ contains a uniform volume distribution of positive charge.}$ $\text{Which of the curve on the graph below correctly illustrates the dependence of the magnitude of the electric field of the sphere as a function of the distance } r \text{ from its centre?}$ 1 116 Recommended Questions $\text{A}$, $\text{B}$... 3 Edit Delete
16465 $\text{The electric field in a certain region is acting radially outward and is given by } E = Aa. \text{ A charge contained in a sphere of radius } a \text{ centered at the origin of the field will be given by:}$ 1 116 Recommended Questions $4\pi \varepsilon_0 Aa^2$, $\varepsilon_0 Aa^2$... 3 Edit Delete
16464 $\text{The electric flux from a cube of edge } l \text{ is } \phi. \text{ What will be its value if the edge of the cube is made } 2l \text{ and the charge enclosed is halved?}$ 1 116 Recommended Questions $\frac{1}{2} \phi$, $2 \phi$... 1 Edit Delete
16463 $\text{Three infinitely long charge sheets are placed as shown in the figure. The electric field at point } P \text{ is:}$ 1 116 Recommended Questions $\frac{2\sigma}{\varepsilon_0} \hat{k}$, $\frac{2\sigma}{\varepsilon_0} \hat{k}$... 2 Edit Delete
16462 $\text{If there were only one type of charge in the universe, then:}$ $\text{(a)} \oint_{s} \mathbf{E} \cdot d\mathbf{S} \neq 0 \text{ on any surface}$ $\text{(b)} \oint_{s} \mathbf{E} \cdot d\mathbf{S} = 0 \text{ if the charge is outside the surface.}$ $\text{(c)} \oint_{s} \mathbf{E} \cdot d\mathbf{S} \text{ could not be defined.}$ $\text{(d)} \oint_{s} \mathbf{E} \cdot d\mathbf{S} = \frac{q}{\varepsilon_0} \text{ if charges of magnitude } q \text{ were inside the surface.}$ $\text{Choose the correct statement(s):}$ 1 116 Recommended Questions $\text{(a) and (d)}$, $\text{(a) and (c)}$... 3 Edit Delete
16461 $\text{Refer to the arrangement of charges in the figure and a Gaussian surface of a radius } R \text{ with } Q \text{ at the centre. Then:}$ $\text{(a) total flux through the surface of the sphere is } \frac{-Q}{\varepsilon_0}. $ $\text{(b) field on the surface of the sphere is } \frac{-Q}{4\pi\varepsilon_0 R^2}. $ $\text{(c) flux through the surface of the sphere due to } 5Q \text{ is zero.}$ $\text{(d) field on the surface of the sphere due to } -2Q \text{ is the same everywhere.}$ $\text{Choose the correct statement(s):}$ 1 116 Recommended Questions $\text{(a) and (d)}$, $\text{(a) and (c)}$... 2 Edit Delete
16460 $\text{A point charge } q \text{ is placed at the center of the open face of a hemispherical}$ $\text{surface as shown in the figure. The flux linked with the surface is:}$ 1 116 Recommended Questions $\text{zero}$, $\frac{q}{2\varepsilon_0}$... 2 Edit Delete
16459 $\text{A hollow cylinder has a charge } q \text{ coulomb within it (at the geometrical centre).}$ $\text{If } \phi \text{ is the electric flux in units of Volt-meter associated with the curved surface } B, \text{ the flux linked with the plane surface } A \text{ in units of volt-meter will be:}$ 1 116 Recommended Questions $\frac{1}{2} \left( \frac{q}{\varepsilon_0} - \phi \right)$, $\frac{q}{2\varepsilon_0}$... 1 Edit Delete
16458 $\text{A square surface of a side } L \text{ (m) is in the plane of the paper. A uniform electric field } \vec{E} \text{ (V/m), also in the plane of the paper, is limited only to the lower half of the square surface, (see figure). The electric flux in SI units associated with the surface is:}$ 1 116 Recommended Questions $\frac{EL^2}{2\varepsilon_0}$, $\frac{EL^2}{2}$... 3 Edit Delete
16457 $\text{A point charge is placed at the center of the spherical Gaussian surface.}$ $\text{The electric flux through the surface is changed if the:}$ 1 116 Recommended Questions $\text{sphere is replaced by a cube of the same volume.}$, $\text{sphere is replaced by a cube of half volume.}$... 4 Edit Delete
16456 $\text{A hollow metal sphere of radius } R \text{ is uniformly charged. The electric field due to the sphere at a distance } r \text{ from the centre:}$ 1 116 Recommended Questions $\text{decreases as } r \text{ increases for } r < R \text{ and for } r > R.$, $\text{increases as } r \text{ increases for } r < R \text{ and for } r > R.$... 3 Edit Delete
16455 $\text{Given below are two statements:}$ $\text{Assertion (A): A charge } q \text{ is placed in a cube of side } b. \text{ The flux associated}$ $\text{with the cube is independent of side length.}$ $\text{Reason (R): Gauss's law is independent of the size of the Gaussian}$ $\text{surface.}$ 1 116 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
16454 $\text{Which of the following graphs shows the variation of electric field } E \text{ due to a hollow spherical conductor of radius } R \text{ as a function of distance from the centre of the sphere?}$ 1 116 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
16453 $\text{The electric field at a distance } \frac{3R}{2} \text{ from the centre of a charged conducting spherical shell of radius } R \text{ is } E. \text{ The electric field at a distance } \frac{R}{2} \text{ from the centre of the sphere is:}$ 1 116 Recommended Questions $E$, $\frac{E}{2}$... 4 Edit Delete
16452 $\text{A charge } Q \text{ is enclosed by a Gaussian spherical surface of radius } R. \text{ If the radius is doubled, then the outward electric flux will:}$ 1 116 Recommended Questions $\text{be reduced to half}$, $\text{remain the same}$... 2 Edit Delete
16451 $\text{What is the flux through a cube of side } a, \text{ if a point charge of } q \text{ is placed at one of its corners?}$ 1 116 Recommended Questions $\frac{2q}{\varepsilon_0}$, $\frac{q}{8\varepsilon_0}$... 2 Edit Delete
16450 $\text{The ratio of the electric flux linked with shell } A \text{ and shell } B \text{ in the diagram shown below is:}$ 1 116 Recommended Questions $1 : 1$, $1 : 2$... 1 Edit Delete
16449 $\text{Two-point charges, } +q \text{ and } -q \text{ are held fixed at } (-d, 0) \text{ and } (d, 0) \text{ respectively of an } (x, y) \text{ coordinate system. Then:}$ 1 116 Recommended Questions $E \text{ at all points on the } y\text{-axis is along } \hat{i}.$, $\text{The electric field } \vec{E} \text{ at all points on the } x\text{-axis has the same direction.}$... 1 Edit Delete
16448 $\text{Two point dipoles of dipole moment } \vec{p}_1 \text{ and } \vec{p}_2 \text{ are at a distance } x \text{ from each other and } \vec{p}_1 \parallel \vec{p}_2. \text{ The force between the dipole is:}$ 1 116 Recommended Questions $\frac{1}{4\pi\varepsilon_0} \frac{4p_1p_2}{x^4}$, $\frac{1}{4\pi\varepsilon_0} \frac{3p_1p_2}{x^3}$... 3 Edit Delete
16447 $\text{The figure shows electric field lines in which an electric dipole } p \text{ is placed as shown in the figure. Which of the following statements is correct?}$ 1 116 Recommended Questions $\text{The dipole will not experience any force.}$, $\text{The dipole will experience a force towards the right.}$... 3 Edit Delete
16446 $\text{An electric dipole is kept at the origin as shown in the diagram. The point } A, B, C \text{ are on a circular arc with the centre of curvature at the origin. If the electric fields at } A, B \text{ and } C \text{ respectively are } \vec{E}_1, \vec{E}_2, \vec{E}_3, \text{ then which of the following is incorrect? } (d \gg l)$ 1 116 Recommended Questions $\vec{E}_1 = -\vec{E}_3$, $\vec{E}_1 = -2\vec{E}_2$... 1 Edit Delete
16445 $\text{The electric field at a point on the equatorial plane at a distance } r \text{ from the}$ $\text{centre of a dipole having dipole moment } \vec{P} \text{ is given by:}$ $(r \gg \text{ separation of two charges forming the dipole,}$ $\varepsilon_0 \text{ = permittivity of free space})$ 1 116 Recommended Questions $\vec{E} = \frac{\vec{P}}{4\pi\varepsilon_0 r^3}$, $\vec{E} = \frac{2\vec{P}}{\pi\varepsilon_0 r^3}$... 4 Edit Delete
16444 $\text{An electric dipole is kept in a uniform electric field such that the dipole moment is not collinear with the electric field. It experiences:}$ 1 116 Recommended Questions $\text{a force and torque.}$, $\text{a force but no torque.}$... 3 Edit Delete
16443 $\text{The electric field at the equator of a dipole is } E. \text{ If the strength of the dipole and distance are now doubled, then the electric field will be:}$ 1 116 Recommended Questions $\frac{E}{2}$, $\frac{E}{8}$... 3 Edit Delete
16442 $\text{In a certain region of space, the electric field is along the } z\text{-direction throughout. The magnitude of the electric field is, however, not constant but increases uniformly along the positive } z\text{-direction, at the rate of } 10^5 \text{ NC}^{-1} \text{ per meter. What is the torque experienced by a system having a total dipole moment equal to } 10^{-7} \text{ C-m in the negative } z\text{-direction?}$ 1 116 Recommended Questions $10^{-2} \text{ N-m}$, $0$... 2 Edit Delete
16441 $\text{Two point charges } -q \text{ and } +q \text{ are placed at a distance of } L, \text{ as shown in the figure.}$ $\text{The magnitude of electric field intensity at a distance } R \,(R \gg L) \text{ varies as:}$ 1 116 Recommended Questions $\frac{1}{R^6}$, $\frac{1}{R^2}$... 3 Edit Delete
16440 $\text{An electric dipole is placed at the centre of a sphere. Which of the following statements is correct?}$ 1 116 Recommended Questions $\text{The electric flux through the sphere is zero.}$, $\text{The electric field is zero at every point on the sphere.}$... 1 Edit Delete
16439 $\text{The net dipole moment of the system is of the magnitude:}$ 1 116 Recommended Questions $q \times 2a$, $2q \times 2a$... 1 Edit Delete
16438 $\text{Three-point charges } +q, -2q \text{ and } +q \text{ are placed at points}$ $\text{(} x = 0, y = a, z = 0 \text{)}, \text{(} x = 0, y = 0, z = 0 \text{)} \text{ and } \text{(} x = a, y = 0, z = 0 \text{)},$ $\text{respectively. The magnitude and direction of the electric dipole moment vector}$ $\text{of this charge assembly are:}$ 1 116 Recommended Questions $\sqrt{2}qa \text{ along } +y \text{ direction}$, $\sqrt{2}qa \text{ along the line joining points } (x = 0, y = 0, z = 0) \text{ and }$ $\text{(} x = a, y = a, z = 0 \text{)}$... 2 Edit Delete
16437 $\text{An electric dipole is placed at an angle of } 30^\circ \text{ with an electric field intensity } 2 \times 10^5 \text{ N/C.}$ $\text{It experiences a torque equal to } 4 \text{ N-m.}$ $\text{The charge on the dipole, if the dipole length is } 2 \text{ cm, is:}$ 1 116 Recommended Questions $8 \text{ mC}$, $2 \text{ mC}$... 2 Edit Delete
16436 $\text{In the Millikan oil drop experiment, a charged drop falls with a terminal velocity } v. \text{ If an electric field } E \text{ is applied vertically upwards it moves with terminal velocity } 2v \text{ in the upward direction. If the electric field reduces to } \frac{E}{2} \text{ then its terminal velocity will be:}$ 1 116 Recommended Questions $\frac{v}{2}$, $v$... 1 Edit Delete
16435 $\text{Consider two charges, } +q \text{ and } -q \ (q > 0) \text{ placed at a distance } 2a \text{ from each other.}$ $\text{At the point } M \text{ (see figure below), the electric field makes an angle } \phi$ $\text{from the } x\text{-axis. The correct value of } \phi \text{ is:}$ 1 116 Recommended Questions $0^\circ$, $90^\circ$... 1 Edit Delete
16434 $\text{An infinite number of electric charges each equal to } 5 \text{ nC (magnitude) are placed along the } x\text{-axis at } x = 1 \text{ cm, } x = 2 \text{ cm, } x = 4 \text{ cm, } x = 8 \text{ cm} \ldots \ldots \text{ and so on. In the setup if the consecutive charges have opposite sign, then the electric field in Newton/Coulomb at } x = 0 \text{ is: } \left( \frac{1}{4\pi\varepsilon_0} = 9 \times 10^9 \text{ N-m}^2/\text{C}^2 \right)$ 1 116 Recommended Questions $12 \times 10^4$, $24 \times 10^4$... 3 Edit Delete
16433 $\text{An electron enters an electric field with its velocity in the direction of the electric lines of force. Then:}$ 1 116 Recommended Questions $\text{the path of the electron will be a circle.}$, $\text{the path of the electron will be a parabola.}$... 3 Edit Delete
16432 $\text{The electric field at a point is:}$ $\text{(a) always continuous.}$ $\text{(b) continuous if there is no charge at that point.}$ $\text{(c) discontinuous only if there is a negative charge at that point.}$ $\text{(d) discontinuous if there is a charge at that point.}$ $\text{Choose the correct option:}$ 1 116 Recommended Questions $\text{(a), (b)}$, $\text{(b), (d)}$... 2 Edit Delete
16431 $\text{An electron falls from rest through a vertical distance } h \text{ in a uniform and vertically upward-directed electric field } E. \text{ The direction of the electric field is now reversed, keeping its magnitude the same. A proton is allowed to fall from rest through the same vertical distance } h. \text{ The fall time of the electron in comparison to the fall time of the proton is:}$ 1 116 Recommended Questions $\text{smaller}$, $\text{5 times greater}$... 1 Edit Delete
16430 $\text{In the following four situations, charged particles are at an equal distance from the origin.}$ $\text{Arrange the magnitude of the net electric field at origin, starting with the highest.}$ 1 116 Recommended Questions $(i) > (ii) > (iii) > (iv)$, $(ii) > (i) > (iii) > (iv)$... 3 Edit Delete
16429 $\text{Twelve point charges each of charge } q \text{ C are placed at the circumference of a circle of radius } r \text{ m with equal angular spacing.}$ $\text{If one of the charges is removed, the net electric field (in } \text{N/C}) \text{ at the centre of the circle is:}$ $\left(\varepsilon_0\text{-permittivity of free space}\right)$ 1 116 Recommended Questions $\frac{13q}{4\pi\varepsilon_0 r^2}$, $\text{zero}$... 3 Edit Delete
16428 $\text{A charged ball } B \text{ hangs from a silk thread } S, \text{ which makes an angle } \theta \text{ with a large charged conducting sheet } P, \text{ as shown in the figure. The surface charge density } \sigma \text{ of the sheet is proportional to:}$ 1 116 Recommended Questions $\sin \theta$, $\tan \theta$... 2 Edit Delete
16427 $\text{A toy car with charge } q \text{ moves on a frictionless horizontal plane surface under the influence of a uniform electric field } \vec{E}. \text{ Due to the force } q\vec{E}, \text{ its velocity increases from } 0 \text{ to } 6 \text{ m/s in a one-second duration. At that instant, the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between } 0 \text{ to } 3 \text{ seconds are respectively:}$ 1 116 Recommended Questions $2 \text{ m/s, } 4 \text{ m/s}$, $1 \text{ m/s, } 3 \text{ m/s}$... 2 Edit Delete
16426 $\text{A spherical conductor of radius } 10 \text{ cm has a charge of } 3.2 \times 10^{-7} \text{ C}$ $\text{distributed uniformly. What is the magnitude of the electric field at a point } 15 \text{ cm from the centre of the sphere?}$ $\left( \frac{1}{4\pi\varepsilon_0} = 9 \times 10^9 \text{ N-m}^2/\text{C}^2 \right)$ 1 116 Recommended Questions $1.28 \times 10^5 \text{ N/C}$, $1.28 \times 10^6 \text{ N/C}$... 1 Edit Delete
16425 $\text{Three positive charges of equal value } q \text{ are placed at the vertices of an equilateral triangle. The resulting lines of force should be sketched as in:}$ 1 116 Recommended Questions $\text{Option 1}$, $\text{Option 2}$... 3 Edit Delete
16424 $\text{Two-point charges } +8q \text{ and } -2q \text{ are located at } x = 0 \text{ and } x = L \text{ respectively. The location of a point on the } x\text{-axis at which the net electric field due to these two point charges is zero is:}$ 1 116 Recommended Questions $8L$, $4L$... 3 Edit Delete
16423 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{The number of field lines drawn from a charge is proportional to the magnitude of the charge.}$ $\text{Reason (R):}$ \text{The electric field at any point is proportional to the magnitude of the source charge.}$ 1 116 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
16422 $\text{The electrostatic field due to a charged conductor just outside the conductor is:}$ 1 116 Recommended Questions $\text{zero and parallel to the surface at every point inside the conductor.}$, $\text{zero and is normal to the surface at every point inside the conductor.}$... 4 Edit Delete
16421 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{Work done in moving a charge between any two points in a}$ $\text{uniform electric field is independent of the path followed by}$ $\text{the charge between these points.}$ $\text{Reason (R):}$ $\text{Electrostatic forces are non-conservative.}$ 1 116 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
16420 $\text{A charged particle } q \text{ of mass } m \text{ is released on the } y\text{-axis at } y = a \text{ in an}$ $\text{electric field } \vec{E} = -4y\hat{j}. \text{ The speed of the particle on reaching the origin will be:}$ 1 116 Recommended Questions $\sqrt{\frac{2a}{mq}}$, $\sqrt{\frac{a}{mq}}$... 3 Edit Delete
16419 $\text{A charge } q \text{ is placed in a uniform electric field } E. \text{ If it is released, then the kinetic energy of the charge after travelling distance } y \text{ will be:}$ 1 116 Recommended Questions $qEy$, $2qEy$... 1 Edit Delete
16418 $\text{A thin conducting ring of the radius } R \text{ is given a charge } +Q. \text{ The electric field at the centre } O \text{ of the ring due to the charge on the part } AKB \text{ of the ring is } E. \text{ The electric field at the centre due to the charge on the part } ACDB \text{ of the ring is:}$ 1 116 Recommended Questions $3E \text{ along } KO$, $E \text{ along } OK$... 2 Edit Delete
16417 $\text{A metallic solid sphere is placed in a uniform electric field. The lines of force, as shown in the figure, follow the path(s):}$ 1 116 Recommended Questions $1$, $2$... 4 Edit Delete
16416 $\text{Three identical positive point charges, as shown are placed at the vertices of an isosceles right-angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point } M \text{ of the hypotenuse?}$ 1 116 Recommended Questions 1, 2... 2 Edit Delete
16415 $\text{The figure shows the electric lines of force emerging from a charged body. If the electric field at } A \text{ and } B \text{ are } E_A \text{ and } E_B \text{ respectively and if the displacement between } A \text{ and } B \text{ is } r, \text{ then:}$ 1 116 Recommended Questions $E_A > E_B$, $E_A < E_B$... 1 Edit Delete
16414 $\text{Point charges } +4q, -q \text{ and } +4q \text{ are kept on the x-axis at points } x = 0, x = a \text{ and } x = 2a \text{ respectively, then:}$ 1 116 Recommended Questions $\text{Only } -q \text{ is in stable equilibrium.}$, $\text{None of the charges are in equilibrium.}$... 3 Edit Delete
16413 $\text{Two equal negative charges of charge } -q \text{ are fixed at the points } (0, a) \text{ and } (0, -a) \text{ on the } Y\text{-axis.}$ $\text{A positive charge } Q \text{ is released from rest at the point } (2a, 0) \text{ on the } X\text{-axis.}$ $\text{The charge } Q \text{ will:}$ 1 116 Recommended Questions $\text{execute simple harmonic motion about the origin.}$, $\text{move to the origin and remain at rest.}$... 4 Edit Delete
16412 $\text{The ratio of Coulomb's electrostatic force to the gravitational force between an}$ $\text{electron and a proton separated by some distance is } 2.4 \times 10^{39}. \text{ The ratio of}$ $\text{the proportionality constant, } k = \frac{1}{4\pi\varepsilon_0} \text{ to the gravitational constant } G \text{ is}$ $\text{nearly:}$ $\text{(Given that the charge of the proton and electron each } = 1.6 \times 10^{-19}, \text{ the}$ $\text{mass of the electron } = 9.11 \times 10^{-31} \text{ kg, the mass of the proton } = 1.67 \times 10^{-27} \text{ kg):}$ 1 116 Recommended Questions $10^{20}$, $10^{30}$... 1 Edit Delete
16411 $\text{An electron is moving around the nucleus of a hydrogen atom in a circular orbit of radius } r. \text{ The Coulomb force } \vec{F} \text{ on the electron is: (Where } K = \frac{1}{4\pi\varepsilon_0})$ 1 116 Recommended Questions $-K \frac{e^2}{r^3} \hat{r}$, $K \frac{e^2}{r^3} \vec{r}$... 3 Edit Delete
16410 $\text{When 2 point charges } +q \text{ and } +3q, \text{ held at a distance } r \text{ from each other are released, they have an acceleration of } a \text{ and } 2a \text{ respectively.}$ $\text{When we distribute the total charge equally between them, keep them at the same distance as the original and release them, their accelerations now would be:}$ 1 116 Recommended Questions $2a \text{ and } 4a$, $\frac{4a}{3} \text{ and } \frac{8a}{3}$... 2 Edit Delete
16409 $\text{If a soap bubble is given some charge, then its radius:}$ 1 116 Recommended Questions $\text{increases.}$, $\text{decreases.}$... 1 Edit Delete
16408 $\text{Two spherical conductors } B \text{ and } C \text{ having equal radii and carrying equal charges in them repel each other with a force } F \text{ when kept apart at some distance. A third spherical conductor having same radius as that of } B \text{ but uncharged is brought in contact with } B, \text{ then brought in contact with } C \text{ and finally removed away from both. The new force of repulsion between } B \text{ and } C \text{ is:}$ 1 116 Recommended Questions $\frac{F}{4}$, $\frac{3F}{4}$... 4 Edit Delete
16407 $\text{Four charges are arranged at the corners of a square } ABCD, \text{ as shown in the adjoining figure. The force on the positive charge } Q \text{ kept at the centre } O \text{ is:}$ 1 116 Recommended Questions $\text{Zero}$, $\text{Along the diagonal } AC$... 3 Edit Delete
16406 $\text{Suppose the charge of a proton and an electron differ slightly. One of them is } -e, \text{ the other is } (e + \Delta e).$ $\text{If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance } d \text{ (much greater than atomic size) apart is zero, then } \Delta e \text{ is of the order of?}$ $\text{(Given the mass of hydrogen } m_h = 1.67 \times 10^{-27} \text{ kg)}$ 1 116 Recommended Questions $10^{-23} \text{ C}$, $10^{-37} \text{ C}$... 2 Edit Delete
16405 $\text{An infinite number of charges, each of charge } 1 \, \mu\text{C}, \text{ are placed on the } x\text{-axis}$ $\text{with co-ordinates } x = 1, 2, 4, 8, \ldots \infty. \text{ If a charge of } 1 \, \text{C is kept at the}$ $\text{origin, then what is the net force acting on } 1 \, \text{C charge?}$ 1 116 Recommended Questions $9000 \, \text{N}$, $12000 \, \text{N}$... 2 Edit Delete
16404 $\text{Three charges are placed at the vertices of an equilateral triangle of side } a \text{ as shown in the following figure. The force experienced by the charge placed at the vertex } A \text{ in a direction normal to } BC \text{ is:}$ 1 116 Recommended Questions $\frac{Q^2}{4 \pi \epsilon_0 a^2}$, $-\frac{Q^2}{4 \pi \epsilon_0 a^2}$... 3 Edit Delete
16403 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ \text{If electrons in an atom were stationary, then they would fall into the nucleus.} $\text{Reason (R):}$ \text{Electrostatic force of attraction acts between negatively charged electrons and positive nucleus.}$ 1 116 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
16402 $\text{A particle of mass } m \text{ carrying charge } -q_1 \text{ is moving around a charge } +q_2$ $\text{along a circular path of radius } r. \text{ The period of revolution of the charge } -q_1 \text{ is:}$ 1 116 Recommended Questions $\sqrt{\frac{16\pi^3 \varepsilon_0 m r^3}{q_1 q_2}}$, $\sqrt{\frac{8\pi^3 \varepsilon_0 m r^3}{q_1 q_2}}$... 1 Edit Delete
16401 $\text{The force between two charges } 0.06 \text{ m apart is } 5 \text{ N. If each charge is moved}$ $\text{towards the other by } 0.01 \text{ m, then the force between them will become:}$ 1 116 Recommended Questions $7.20 \text{ N}$, $11.25 \text{ N}$... 2 Edit Delete
16400 $\text{Two charged particles } P \text{ and } Q \text{ are } 0.10 \text{ m apart. The charge on } P \text{ is } 1.50 \times 10^{-7} \text{ C and the charge on } Q \text{ is } 1.50 \times 10^{-7} \text{ C.}$ $\text{Particle } P \text{ experiences an electrostatic force of magnitude } F \text{ because it is near to the charge on particle } Q.$ $\text{The distance between the two particles is increased to } 0.20 \text{ m.}$ $\text{The charge on } P \text{ increases to } 4.50 \times 10^{-7} \text{ C and the charge on } Q \text{ increases to } 6.00 \times 10^{-7} \text{ C.}$ $\text{What is the magnitude of the force that particle } P \text{ experiences now?}$ 1 116 Recommended Questions $\frac{F}{4}$, $12F$... 4 Edit Delete
16399 $\text{Four charges are arranged at the corners of a square } ABCD \text{ as shown in the figure.}$ $\text{The force on a positive charge kept at the center of the square is:}$ 1 116 Recommended Questions $\text{zero}$, $\text{along diagonal } AC$... 4 Edit Delete
16398 $\text{Two small spheres each having the charge } +Q \text{ are suspended by insulating threads of length } L \text{ from a hook. If this arrangement is taken in space where there is no gravitational effect, then the angle between the two suspensions and the tension in each will be:}$ 1 116 Recommended Questions $180^\circ, \frac{1}{4\pi\varepsilon_0} \frac{Q^2}{(2L)^2}$, $90^\circ, \frac{1}{4\pi\varepsilon_0} \frac{Q^2}{(L)^2}$... 1 Edit Delete
16397 $\text{The unit of permittivity of free space } \varepsilon_0 \text{ is:}$ 1 116 Recommended Questions $\text{Newton metre}^2 / \text{Coulomb}^2$, $\text{Coulomb}^2 / \text{Newton metre}^2$... 2 Edit Delete
16396 $\text{Two point charges } A \text{ and } B, \text{ having charges } +Q \text{ and } -Q \text{ respectively, are placed at a certain distance apart and the force acting between them is } F. \text{ If } 25\% \text{ charge of } A \text{ is transferred to } B, \text{ then the force between the charges becomes:}$ 1 116 Recommended Questions $\frac{4F}{3}$, $F$... 3 Edit Delete
16395 $\text{The acceleration of an electron due to the mutual attraction between the electron and a proton when they are } 1.6 \, \text{\AA} \text{ apart is:}$ $\left( \frac{1}{4\pi\varepsilon_0} \right) = 9 \times 10^9 \, \text{Nm}^2\text{C}^{-2}$ 1 116 Recommended Questions $10^{24} \, \text{m/s}^2$, $10^{23} \, \text{m/s}^2$... 3 Edit Delete
16394 $\text{Two positive ions, each carrying a charge } q, \text{ are separated by a distance } d. \text{ If } F \text{ is the force of repulsion between the ions, the number of electrons missing from each ion will be:}$ $\text{(} e \text{ is the charge on an electron)}$ 1 116 Recommended Questions $\frac{4\pi \varepsilon_0 Fd^2}{e^2}$, $\sqrt{\frac{4\pi \varepsilon_0 Fe^2}{d^2}}$... 3 Edit Delete
16393 $\text{Two charges } 2 \, \mu\text{C and } 8 \, \mu\text{C are separated by } 6 \, \text{cm. The neutral point is at:}$ 1 116 Recommended Questions $4 \, \text{cm from } 2 \, \mu\text{C.}$, $2 \, \text{cm from } 2 \, \mu\text{C.}$... 2 Edit Delete
16392 $\text{Two charges } +2 \text{ C and } +6 \text{ C are repelling each other with a force of } 12 \text{ N.}$ $\text{If each charge is given } -2 \text{ C of charge, then the value of the force will be:}$ 1 116 Recommended Questions $4 \text{ N (attractive)}$, $4 \text{ N (repulsive)}$... 4 Edit Delete
16391 $\text{A total charge } Q \text{ is broken in two parts } Q_1 \text{ and } Q_2 \text{ and they are placed at a distance } R \text{ from each other. The maximum force of repulsion between them will occur, when:}$ 1 116 Recommended Questions $Q_2 = \frac{Q}{R}, Q_1 = Q - \frac{Q}{R}$, $Q_2 = \frac{Q}{4}, Q_1 = Q - \frac{2Q}{3}$... 4 Edit Delete
16390 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{When charges are shared between any two bodies, no charge is really lost but some loss of energy does occur.}$ $\text{Reason (R):}$ $\text{Some energy disappears in the form of heat, sparking, etc.}$ 1 116 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
16389 $10^9$ $\text{electrons move out of a body to another body every second, how much time approximately is required to get a total charge of } 1 \text{ C on the other body?}$ 1 116 Recommended Questions $200 \text{ years}$, $100 \text{ years}$... 1 Edit Delete
16388 $\text{A polythene piece rubbed with wool is found to have a negative charge of } 3 \times 10^{-7} \text{ C. Transfer of mass from wool to polythene is:}$ 1 116 Recommended Questions $0.7 \times 10^{-18} \text{ kg}$, $1.7 \times 10^{-17} \text{ kg}$... 4 Edit Delete
16387 $\text{The charge on 500 cc of water due to protons will be:}$ 1 116 Recommended Questions $6.0 \times 10^{27} \text{ C}$, $2.67 \times 10^{7} \text{ C}$... 2 Edit Delete
16386 $\text{When } 10^{19} \text{ electrons are removed from a neutral metal plate, the electric charge on it is?}$ 1 116 Recommended Questions $-1.6 \text{ C}$, $+1.6 \text{ C}$... 2 Edit Delete
16385 What is true regarding A, B and C in the given diagrammatic representation of rDNA technology? 6 615 Recommended Questions I and II only, I and III only... 4 Edit Delete
16384 Following enzymes/techniques are used in the process of recombinant DNA technology a. EcoRI to cut the isolated genome b. DNA ligase c. Protease and ribonuclease for removal of proteins and RNA from DNA d. Production of recombinant hosts e. Lysozyme for isolation of the genetic material (DNA) f. Gel electrophoresis for separation and isolation of DNA fragments Mark the correct sequence of their use 6 615 Recommended Questions c, e, b, f, a, d, e, c, a, b, f, d... 3 Edit Delete
16383 Given below are the three basic steps in genetically modifying an organism a. Introduction of the identified DNA into the host. b. Maintenance of introduced DNA in the host and transfer of the DNA to its progeny. c. Identification of DNA with desirable genes. Choose the option with respect to correct sequence of the given steps 6 615 Recommended Questions a → c → b, c → b → a... 3 Edit Delete
16382 Consider the following statements: I: Exonucleases remove nucleotides from the ends of DNA whereas, endonucleases make cuts at specific positions within DNA. II: To visualize pure DNA fragments, it is stained with ethidium bromide and seen in UV light. III: Plasmids and phage DNA are used as vectors in genetic engineering as they are extrachromosomal DNA molecules. Which of the above statements are true? 6 615 Recommended Questions I and II only, I and III only... 4 Edit Delete
16381 The introduction of genes into plant cells often makes use of 6 615 Recommended Questions Disarmed Agrobacterium vectors, disarmed retroviral vectors... 3 Edit Delete
16380 The technique not used for transformation of plant cells in recombinant procedures is: 6 615 Recommended Questions Biolistics, Agrobacterium mediation... 4 Edit Delete
16379 Arrange the following steps in order: 1) Restriction Digestion 2) Running Agarose gel 3) Elution of bands 4) Purification of DNA 5) ligation 6) transformation 7) Cloning 6 615 Recommended Questions 1-2-3-4-5-6-7, 1-5-6-7-2-3-4... 1 Edit Delete
16378 Which of the following is not a direct method of gene transfer? 6 615 Recommended Questions Microinjection, Biolistic... 4 Edit Delete
16377 The plasmid pBR322 does not contain: 6 615 Recommended Questions An origin of replication site, A gene that encodes for restrictor of plasmid copy number... 3 Edit Delete
16376 In 1960's two enzymes were discovered in bacteria that were responsible for providing immunity against bacteriophages. One was Restriction Endonuclease and the other was 6 615 Recommended Questions Methylase, Exonuclease... 1 Edit Delete
16375 If Pvu I restriction endonuclease is used for cleaving pBR322 cloning vector for inserting foreign DNA, which of the following can be expected in recombinants? 6 615 Recommended Questions They remain resistant to tetracycline but not to ampicillin, They would die in tetracycline containing medium but remain alive in ampicillin containing medium... 1 Edit Delete
16374 Which of the following does not have the ability to replicate within bacterial cells independent of the control of chromosomal DNA? 6 615 Recommended Questions Plastid, Bacteriophages... 1 Edit Delete
16373 Microinjection is suitable for: 6 615 Recommended Questions Injecting an ovum into the sperm in IVF, Transforming animal cells... 2 Edit Delete
16372 Which of the following statement is not true: 6 615 Recommended Questions Transformation is a procedure through which a piece of DNA is introduced in a host bacterium, Normally, the genes encoding resistance to antibiotics are considered useful selectable markers for E.coli... 4 Edit Delete
16371 The names associated with construction of first Recombinant DNA are 6 615 Recommended Questions Arber, Nathans, Smith, Annie Chang, Boyer, Berg, Cohen... 2 Edit Delete
16370 Identify a character that is not desirable in a cloning vector: 6 615 Recommended Questions an inactive promoter, an origin of replication site... 1 Edit Delete
16369 When we ligate a foreign DNA at the sal I site of tetracycline resistance gene in a vector pBR 322, the ___a___ plasmid will lose tetracycline resistance due to insertion of foreign DNA but can still be selected out from ___b___ ones by plating the ___c___ on ampicillin containing medium 6 615 Recommended Questions Non-recombinant, Recombinant, Transformant, Recombinant, Non-recombinant, Transformant... 2 Edit Delete
16368 Which statement regarding restriction endonucleases is NOT correct? 6 615 Recommended Questions They recognize a specific base sequence in the DNA., They are produced by bacterial cells as a primitive immune system.... 3 Edit Delete
16367 What is the source of EcoRI? 6 615 Recommended Questions Escherichia coli R 1, Escherichia coli R I 13... 3 Edit Delete
16366 Which of the following is a cloning vector? 6 615 Recommended Questions DNA of Salmonella typhimurium, Ti plasmid... 2 Edit Delete
16365 If the gene of interest is cloned at EcoRI in pBR322, the recombinant E-coli after transformation are 6 615 Recommended Questions Susceptible to ampicillin and tetracycline., Sensitive to tetracycline.... 4 Edit Delete
16364 Mark the correct statement for pBR322 as a plasmid vector I. Contains relaxed origin of replication. II. Two genes coding for resistance to antibiotics have been introduced. III. There are single recognition sites for a number of restriction enzymes at various points. IV. Insertional inactivation is a useful selection method for identifying recombinant vectors with insert. 6 615 Recommended Questions I, II, III & IV, I, II only... 1 Edit Delete
16363 The restriction endonuclease breaks bonds between: 6 615 Recommended Questions DNA-RNA hybrid, Introns... 3 Edit Delete
16362 Which one of the following is used as vector for cloning genes into higher organisms? 6 615 Recommended Questions Baculovirus, Salmonella typhimurium... 4 Edit Delete
16361 For the multiplication of any alien piece of DNA in an organism: 6 615 Recommended Questions It must be devoid of any introns in it, It must be a part of a chromosome with an ori... 2 Edit Delete
16360 Consider the following statements: I: Ori is responsible for the copy number of the linked DNA. II: Transformation is a process through which a piece of DNA is introduced into a host bacterium. III: Bacteriophages have very high copy numbers of their genome within the bacterial cell. Which of the above statements are true? 6 615 Recommended Questions I and II only, I and III only... 4 Edit Delete
16359 Which of the following is not a characteristic of pBR322 vector? 6 615 Recommended Questions It is the first artificial cloning vector constructed in 1977 by Boliver and Rodriguez., It is the most widely used, versatile and easily manipulated vector.... 4 Edit Delete
16358 Plasmids are good vectors for genetic engineering because 6 615 Recommended Questions They self replicate within bacterial cells, Replicate freely outside bacterial cells... 1 Edit Delete
16357 Biolistic (gene gun) is suitable for 6 615 Recommended Questions disarming pathogen vectors, transformation of plant cell... 2 Edit Delete
16356 The following palindrome is recognized by the restriction enzyme: GAATTC CTTAAG 6 615 Recommended Questions BamHI, EcoRI... 2 Edit Delete
16355 How does a bacterial cell protect its own DNA from restriction enzymes? 6 615 Recommended Questions By adding methyl groups to adenine and cytosines., By reinforcing bacterial DNA structure with covalent phosphodiester bonds.... 1 Edit Delete
16354 Similarity between microinjection and biolistic gene gun method is 6 615 Recommended Questions Used to transform the plant host cells., Used to transform the animal host cells.... 3 Edit Delete
16353 Which of the following DNA sequences qualifies to be designated as a palindrome? 6 615 Recommended Questions 5 - GACCAG - 3 in one strand, 3 - GACCAG - 5 in one strand... 4 Edit Delete
16352 The DNA molecule to which the gene of interest is integrated for cloning is called: 6 615 Recommended Questions Transformer, Vector... 2 Edit Delete
16351 Plasmid vector in DNA recombinant technology means 6 615 Recommended Questions a virus that transfers gene to bacteria, extra-chromosomal autonomously replicating circular DNA... 2 Edit Delete
16350 The first type II restriction endonuclease whose functioning depended on a specific DNA nucleotide sequence was: 6 615 Recommended Questions EcoRI, HindII... 2 Edit Delete
16349 Which of the following restriction sites is located within the gene for tetracycline resistance in the plasmid pBR322? 6 615 Recommended Questions BamHI, PstI... 1 Edit Delete
16348 A tumor inducing plasmid widely used in the production of transgenic plants is that of 6 615 Recommended Questions Escherichia coli, Bacillus thuringiensis... 4 Edit Delete
16347 A gene has been inserted into a vector for the purpose of cloning the sequence only. This vector is called 6 615 Recommended Questions Suppression vector, Expression vector... 3 Edit Delete
16346 There is a restriction endonuclease called Eco RI. What does 'co' part in it stand for? 6 615 Recommended Questions Coelom, Coenzyme... 3 Edit Delete
16345 To be useful in genetic engineering a vector must have 6 615 Recommended Questions An origin for replication, Low copy number... 1 Edit Delete
16344 Which of the following is not a method of introducing alien DNA into host cells? 6 615 Recommended Questions Microinjection, Heat shock method... 4 Edit Delete
16343 Match the following enzymes with their functions: Column-I: (a) Restriction endonuclease, (b) Exonuclease, (c) DNA ligase, (d) Tag polymerase. Column-II: (i) joins the DNA fragments, (ii) extends primers on genomic DNA template, (iii) cuts DNA at a specific position, (iv) removes nucleotides from the ends of DNA. 6 615 Recommended Questions (iii) (i) (iv) (ii), (iii) (iv) (i) (ii)... 2 Edit Delete
16342 Which one of the following represents a palindromic sequence in DNA? 6 615 Recommended Questions 5' - GAATTC - 3' 3' - CTTAAG - 5', 5' - CCAATG - 3' 3' - GAATCC - 5'... 1 Edit Delete
16341 Which one of the following is commonly used in transfer of foreign DNA into crop plants? 6 615 Recommended Questions Trichoderma harzianum, Meloidogyne incognita... 3 Edit Delete
16340 Which one of the following palindromic base sequences in DNA can be easily cut at about the middle by some particular restriction enzyme? 6 615 Recommended Questions 5'—CGTTCG—3' 3'—ATGGTA—5', 5'—GATATG—3' 3'—CTACTA—5'... 3 Edit Delete
16339 The cutting of DNA at specific locations became possible with the discovery of 6 615 Recommended Questions restriction enzymes, probes... 1 Edit Delete
16338 Which of these are most widely used in genetic engineering? 6 615 Recommended Questions Plastid, Plasmid... 2 Edit Delete
16337 _____ is a thermophilic bacterium that can survive temperatures up to 95°C. Select the option which fills the blank correctly. 6 615 Recommended Questions Thermus aquaticus, Salmonella typhi... 1 Edit Delete
16336 For transformation, microparticles coated with DNA to be bombarded with gene gun are made up of 6 615 Recommended Questions silver or platinum, platinum or zinc... 4 Edit Delete
16335 Given below is a sample of portion of DNA strand giving the base sequence on the opposite strands. What is so, special shown in it? 5'__GAATTC_₃' 3'__CTTAAG_₅' 6 615 Recommended Questions Deletion mutation, Start codon at the 5' end... 3 Edit Delete
16334 Biolistic method makes use of microparticles coated with DNA bombarded at cells to be transformed. These particles are made up of 6 615 Recommended Questions Zinc or tungsten, Silicon or gold... 3 Edit Delete
16333 Two bacteria found to be very useful in genetic engineering are 6 615 Recommended Questions Diplococcus and Streptomyces, Rhizobium and Xanthomonas... 4 Edit Delete
16332 The colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of 6 615 Recommended Questions Non-recombinant bacteria containing beta-galactosidase, Insertional inactivation of alpha-galactosidase in non-recombinant bacteria... 3 Edit Delete
16331 A cloning vector has two antibiotic resistance genes- for tetracycline and ampicillin. A foreign DNA was inserted into the tetracycline gene. Non-recombinants would survive on the medium containing: 6 615 Recommended Questions ampicillin but not tetracycline, tetracycline but not ampicillin... 3 Edit Delete
16330 Why is a marker gene useful? 6 615 Recommended Questions It shows you whether the gene being added, has been taken up or not., It's a way of labelling which gene you want to modify.... 1 Edit Delete
16329 In the screening process during rDNA experiments, clones that metabolize beta-gal turn: 6 615 Recommended Questions Colorless, Blue... 2 Edit Delete
16328 Insertional inactivation of the lac Z gene forms- 6 615 Recommended Questions Blue recombinant colonies, Colourless recombinant colonies... 2 Edit Delete
16327 Which of the following would you choose as the safest and least cumbersome selectable marker? 6 615 Recommended Questions Ampicillin resistance gene, Tetracyclin resistance gene... 4 Edit Delete
16326 Insertional inactivation of a gene helps in 6 615 Recommended Questions Identification of recombinant clones, Identification of deletion mutants... 3 Edit Delete
16325 In genetic engineering, the antibiotic-resistance gene is used: 6 615 Recommended Questions To select healthy vectors, As sequences from where replication starts... 4 Edit Delete
16324 How are transformants selected from nontransformants? 6 615 Recommended Questions Presence of more than one recognition site in the vector DNA., Presence of alien DNA into the vector DNA results into insertional inactivation of selectable marker.... 4 Edit Delete
16323 A selectable marker is used to: 6 615 Recommended Questions help in eliminating the non-transformants so that the transformants can be regenerated., identify the gene for the desired trait in an alien organism.... 1 Edit Delete
16322 Bacterial colonies that have a foreign DNA fragment inserted into the plasmid will appear white because- 6 615 Recommended Questions X-gal can be cleaved by beta-galactosidase, Lac-Z gene shows insertional inactivation due to insertion of foreign DNA... 2 Edit Delete
16321 A gene, whose expression helps to identify transformed cells is known as 6 615 Recommended Questions selectable marker, vector... 1 Edit Delete
16320 The two antibiotic resistance genes on vector pBR 322 are for: 6 615 Recommended Questions Ampicillin and Tetracycline, Ampicillin and Chloramphenicol... 1 Edit Delete
16319 The primers designed according to (Answer according to very basic PCR) 6 615 Recommended Questions Terminal ends of vector, Terminal ends of gene of interest... 2 Edit Delete
16318 For the synthesis of 4 copies of DNA, how many sets of primers are needed in PCR 6 615 Recommended Questions 2 sets, 8 sets... 1 Edit Delete
16317 The Agitation system of bioreactor has 6 615 Recommended Questions Flat bladed impeller, Sharp impellers... 1 Edit Delete
16316 The synthesis of DNA in PCR will be in 6 615 Recommended Questions 5'-3', 3'-5'... 1 Edit Delete
16315 What is true about the steps of PCR shown in the diagram given below? 6 615 Recommended Questions I and II only, I and III only... 4 Edit Delete
16314 Increased surface area for oxygen transfer is a feature found specifically in 6 615 Recommended Questions Simple stirred tank bioreactor, Sparged stirred-tank bioreactor... 2 Edit Delete
16313 Which one is a true statement regarding DNA polymerase used in PCR? 6 615 Recommended Questions It is used to ligate introduced DNA in recipient cells, It serves as a selectable marker... 4 Edit Delete
16312 Continuous culture leads to 6 615 Recommended Questions Smaller biomass, Higher yields of desired proteins... 2 Edit Delete
16311 The bioreactor shown in the diagram is: 6 615 Recommended Questions Sparged stirred tank type, Airlift type... 3 Edit Delete
16310 Which of the following is not a component of downstream processing? 6 615 Recommended Questions Separation, Purification... 4 Edit Delete
16309 Stirred-tank bioreactors have been designed for: 6 615 Recommended Questions purification of product, addition of preservatives to the product... 3 Edit Delete
16308 During gel electrophoresis for separation of DNA fragment: 6 615 Recommended Questions Smallest fragment will move to the farthest point towards cathode, Smallest fragment will move to the farthest point towards anode... 2 Edit Delete
16307 Separation and purification by filtration, centrifugation of desired compound produced in bioreactor is a part of 6 615 Recommended Questions Downstream processing only, Scaling up and downstream processing... 1 Edit Delete
16306 Taq polymerase is used in the polymerase chain reaction because: 6 615 Recommended Questions It replicates DNA faster than other enzymes, It is the only enzyme that can replicate DNA invitro... 4 Edit Delete
16305 Which of the following equipment is essentially required for growing microbes on a large scale for the industrial production of enzymes? 6 615 Recommended Questions Bioreactor, BOD incubator... 1 Edit Delete
16304 What is true about the DNA polymerase used in PCR? 6 615 Recommended Questions Isolated from a virus, Stable at high temperatures... 2 Edit Delete
16303 The product has to be subjected through a series of processes before it is ready for marketing as a finished product called down stream processing. It includes 6 615 Recommended Questions Separation, Purification... 4 Edit Delete
16302 The process of separation and purification of expressed protein before marketing is called 6 615 Recommended Questions upstream processing, downstream processing... 2 Edit Delete
16301 The source of taq polymerase used in PCR is a 6 615 Recommended Questions thermophilic fungus, mesophilic fungus... 3 Edit Delete
16300 If you transform a cell with an alien piece of DNA only, what is the possibility? 6 615 Recommended Questions This alien piece becomes a part of the host genome., It doesn't become a part of the host's genome but keeps on replicating.... 1 Edit Delete
16299 Cohen and Boyer are known for which of the following discoveries? 6 615 Recommended Questions Antibiotic resistance gene, Recombinant DNA... 2 Edit Delete
16298 What limitation of traditional hybridization used for plant and animal breeding has been overcome by the use of rDNA techniques? 6 615 Recommended Questions High cost, Insertion of undesirable genes... 2 Edit Delete
16297 Introduction of foreign genes for improving genotype is 6 615 Recommended Questions biotechnology, vernalization... 4 Edit Delete
16296 Modern biotechnology consist:- 6 615 Recommended Questions Microbiology, Tissue culture... 4 Edit Delete
16295 The definition of biotechnology given by EFB encompasses 6 615 Recommended Questions Traditional view, Modern molecular biotechnology... 3 Edit Delete
16294 Select the two core techniques that enabled the birth of modern biotechnology: 6 615 Recommended Questions Genetic engineering and bioprocess engineering, Genetic engineering and biolistics... 1 Edit Delete
16293 Which of the following step is first one in order to separate DNA fragments? 6 615 Recommended Questions Running of gel, Staining of gel... 4 Edit Delete
16292 Which of the following enzyme is involved in the isolation of genetic material like DNA from a plant cell? I. Cellulase II. Lysozyme III. Ribonuclease IV. Protease 6 615 Recommended Questions I, II, III and IV, I and II only... 4 Edit Delete
16291 DNA from Agrobacterium tumefaciens can be extracted through use of enzyme 6 615 Recommended Questions Chitinase, Cellulase... 3 Edit Delete
16290 When isolating the pure DNA from a bacterial cell, the cell should not be treated with: 6 615 Recommended Questions lysozyme, proteases... 4 Edit Delete
16289 Elution is: 6 615 Recommended Questions Separating the restricted DNA fragments on agarose gel., Staining the separate DNA fragments with ethidium bromide... 3 Edit Delete
16288 The process of competent cell formation include 6 615 Recommended Questions CaCl2 treatment- ice incubation with r-DNA, heat shock at 42 degree Celsius, ice incubation, Ice incubation - CaCl2 treatment - Heat shock-Ice incubation with r-DNA... 1 Edit Delete
16287 A host cell normally does not take up a foreign DNA until it has been made competent to do so. This is because: 6 615 Recommended Questions DNA is a hydrophilic molecule, DNA is a very large molecule... 1 Edit Delete
16286 Consider the following statements: I: Biolistics or gene gun can be used to introduce genes in both plant and animal cells. II: Agrobacterium tumefaciens does not naturally infect Monocots. III: Liposomes are used in gene therapy for cystic fibrosis. Which of the above statements are true? 6 615 Recommended Questions I and II only, I and III only... 3 Edit Delete
16285 What does cloning mean? 6 615 Recommended Questions The ability to multiply the desired gene in the host, The ability to multiply the vector in the host... 1 Edit Delete
16284 Which of the following step is last for isolating the desired DNA fragment? 6 615 Recommended Questions Running of gel, Elution... 2 Edit Delete
16283 In order to make the host cell competent, divalent cations such as calcium are used- 6 615 Recommended Questions The divalent ions have to be in a specific concentration, They cause the DNA uptake by the cell... 4 Edit Delete
16282 Which of the following is not correctly matched for the organism and its cell wall degrading enzyme? 6 615 Recommended Questions Bacteria — Lysozyme, Plant cells — Cellulase... 3 Edit Delete
16281 E. coli is a commonly used host for gene cloning because 6 615 Recommended Questions It is free from elements that interfere with replication and recombination of DNA, It is easy to transform... 4 Edit Delete
16280 Restriction enzymes are synthesized by: 6 615 Recommended Questions Bacteria only, Yeast and bacteria only... 1 Edit Delete
16279 Read the following statements Statement-A: Restriction enzymes are obtained only from eukaryotes. Statement-B: The first discovered restriction endonuclease was EcoRI. Choose the correct option. 6 615 Recommended Questions Both statements are correct, Both statements are incorrect... 2 Edit Delete
16278 Today we know more than........ restriction enzymes that have been isolated from over........strains 6 615 Recommended Questions 700; 350, 900; 230... 2 Edit Delete
16277 If a foreign gene is inserted into pBR322 by using restriction enzyme BamHI, the selection process, for identifying recombinants requires plating on all except 6 615 Recommended Questions Ampicillin rich medium, Tetracycline rich medium... 3 Edit Delete
16276 When recombinant DNA is inserted within the coding sequence of an enzyme beta-galactosidase. This results in the following except 6 615 Recommended Questions Insertional inactivation, Recombinant colonies do not produce any color... 4 Edit Delete
16275 Selection of recombinants is based on all except one. Find out the exception 6 615 Recommended Questions Expression and non-expression of genes encoding for tetracycline-resistant compound, Expression and non-expression of genes encoding for insulin-resistant compound... 2 Edit Delete
16274 Insertional inactivation is used for 6 615 Recommended Questions Selection of recombinants, Producing pest resistant crops... 1 Edit Delete
16273 Which of the following options is correct about Agrobacterium tumefaciens? 6 615 Recommended Questions It is a pathogen of angiosperms, It is able to deliver a piece of DNA known as T-DNA to transform bacterial cell and direct the cell to produce chemicals required by the pathogen... 4 Edit Delete
16272 A and B in pBR322, shown in the diagram given below, respectively represent recognition sequences of: 6 615 Recommended Questions BamH I and Sma I, Hind II and Sma I... 3 Edit Delete
16271 In genetic engineering, a DNA segment (gene) of interest is transferred to the host cell through a vector. Consider the following four agents (A-D) in this regard and select the correct option about which one or more of these can be used as a vector/vectors: A. a bacterium B. plasmid C. plasmodium D. bacteriophage 6 615 Recommended Questions (A) only, (A) and (C) only... 3 Edit Delete
16270 rop segment codes for pBR322? 6 615 Recommended Questions Resistance protein, Protein for replication... 2 Edit Delete
16269 Part of a plasmid such as pBR322 responsible for controlling the copy number of the linked alien DNA is 6 615 Recommended Questions Ori, rop... 1 Edit Delete
16268 The vector used to transfer gene to produce pest resistant tobacco plant is 6 615 Recommended Questions pBR 322, pUC 18... 3 Edit Delete
16267 Which of the following are used in gene cloning: 6 615 Recommended Questions Lomasomes, Mesosomes... 3 Edit Delete
16266 Which of the following is/are not indirect method/s of gene transfer? 6 615 Recommended Questions a & b, b & c... 3 Edit Delete
16265 To transform a bacterial cell with recombinant DNA, which of the following is required? 6 615 Recommended Questions 90°C temperature, Divalent calcium ions... 2 Edit Delete
16264 Following are vectorless gene transfer except one. Mark the except one 6 615 Recommended Questions Micro injection, Electroporation... 3 Edit Delete
16263 All the following are transformation procedures except 6 615 Recommended Questions Microinjection, Biolistics... 3 Edit Delete
16262 Method of gene transfer that involves use of electrical impulses of high field strength to increase permeability of membrane by creating transient pores in it, is 6 615 Recommended Questions Microinjection, Electroporation... 2 Edit Delete
16261 Genetically engineered plants are generated in laboratory by altering their genetic makeup. This is done by adding one or more genes to a plant's genome by 6 615 Recommended Questions Biolistic method or Agrobacterium tumefaciens mediated transformation, DNA injection or heat shock method... 1 Edit Delete
16260 During the process of gel electrophoresis, DNA moves towards the _A_ of the electrophoretic chamber as the charge of DNA is _B_. Choose the option that fills the blanks correctly. 6 615 Recommended Questions Cathode Positive, Cathode Negative... 4 Edit Delete
16259 DNA fragments separated by gel electrophoresis are shown. Mark the correct statement: 6 615 Recommended Questions Band 3 contains more positively charged DNA molecules than band 1., Band 3 indicates more charge density than bands 1 and 2.... 3 Edit Delete
16258 In the above diagram showing a typical agarose gel electrophoresis 1. Lane 1 shows undigested DNA fragment 2. Lane 4 shows largest DNA particles towards 'y' 3. The procedure helps to form clones of DNA 4. The procedure takes place as the DNA fragments are double stranded 6 615 Recommended Questions Lane 1 shows undigested DNA fragment, Lane 4 shows largest DNA particles towards 'y'... 1 Edit Delete
16257 Which of the following carries a natural plasmid that can most effectively and exclusively be used in transforming plant cell only? 6 615 Recommended Questions Meloidogyne incognita, Bacillus thuringiensis... 3 Edit Delete
16256 In rDNA technology or genetic engineering elution means:- 6 615 Recommended Questions Remove the DNA from centrifuge tube after centrifugation, Separation of the recombinant protein from recombinant cell... 4 Edit Delete
16255 Gel electrophoresis is used for 6 615 Recommended Questions cutting of DNA into fragments, separation of DNA fragments according to their size... 2 Edit Delete
16254 Select the correct statement. 6 615 Recommended Questions A restriction exonuclease cuts both strands of foreign DNA as well as vector DNA at specific palindromic sequences, A restriction endonuclease is named on the basis of scientific name and strain of bacteria from which it is isolated... 2 Edit Delete
16253 The first recombinant DNA was constructed by linking an antibiotic resistant gene with the native plasmid of 6 615 Recommended Questions Escherichia coli, Salmonella typhimurium... 2 Edit Delete
16252 If a DNA fragment is cut by EcoRI at a specific recognition site then 6 615 Recommended Questions Blunt-end cannot be obtained, Sticky-ends cannot be obtained... 1 Edit Delete
16251 Following are the steps in the formation of recombinant DNA by action of a restriction endonuclease. Which one of the given option incorrectly identifies the steps, components labelled as A, B, C, and D? 6 615 Recommended Questions A - Exonuclease cuts the DNA between bases G and A only when the sequence GAATTC is present in the DNA, B - Sticky ends are formed.... 1 Edit Delete
16250 The enzyme known as molecular scissors in genetic engineering is 6 615 Recommended Questions DNA ligase, Transferases... 4 Edit Delete
16249 Which one is considered as molecular glue in recombinant DNA technology? 6 615 Recommended Questions Endonuclease, DNA ligase... 2 Edit Delete
16248 Downstream processing does not involve 6 615 Recommended Questions Biosynthesis, Separation... 1 Edit Delete
16247 Select the incorrect statement. 6 615 Recommended Questions Separation of DNA fragments occurs based on their size in agarose gel., Blue-white selection involves insertional inactivation of beta-galactosidase.... 4 Edit Delete
16246 The figure below shows three steps (A, B, C) of polymerase chain reaction (PCR). Select the correct identification together with what it represents 6 615 Recommended Questions B - Denaturation at a temperature of about 98°C separating the two DNA strands, A - Denaturation at a temperature of about 60°C... 3 Edit Delete
16245 Which of the following statements is incorrect with respect to polymerase chain reaction? 6 615 Recommended Questions Repeated amplification is achieved by the use of thermostable DNA polymerase, Thermostable DNA polymerase is isolated from a bacterium, Thermus aquaticus... 3 Edit Delete
16244 The Taq polymerase enzyme is obtained from 6 615 Recommended Questions Thiobacillus ferroxidans, Bacillus subtilis... 4 Edit Delete
16243 Given below are four statements pertaining to the separation of DNA fragments using gel electrophoresis. Identify the incorrect statements: 6 615 Recommended Questions (a), (c) and (d), (a), (b) and (c)... 4 Edit Delete
16242 The visualization of the DNA bands on the gel can be done with the help of 6 615 Recommended Questions UV rays, Ethidium bromide... 4 Edit Delete
16241 In a DNA gel the fragment of 2kb and 3kb will be 6 615 Recommended Questions 2kb nearer to cathode while 3kb nearer to anode, 2kb closer to wells while 3kb towards the opposite ends... 3 Edit Delete
16240 The enzyme that seals 5' PO4 and 3' OH polynucleotide ends while creating a recombinant DNA molecule is 6 615 Recommended Questions Alkaline phosphatase, DNA ligase... 2 Edit Delete
16239 Consider the following statements: I: Asexual reproduction preserves genetic information while sexual reproduction permits variations. II: Traditional hybridization often leads to the inclusion and multiplication of undesirable genes along with the desired genes. III: rDNA technology allows us to isolate and introduce only one or a set of desirable genes without introducing undesirable genes in the target organism. Which of the above statements are true? 6 615 Recommended Questions I and II only, I and III only... 4 Edit Delete
16238 If any protein-encoding gene is expressed in a heterologous host, it is termed as 6 615 Recommended Questions Recombinant protein, Single-cell protein... 1 Edit Delete
16237 DNA fragments generated by the restriction endonucleases in a chemical reaction can be separated by 6 615 Recommended Questions centrifugation, polymerase chain reaction... 3 Edit Delete
16236 What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis? 6 615 Recommended Questions The larger the fragment size, the farther it moves, The smaller the fragment size, the farther it moves... 2 Edit Delete
16235 Agarose extracted from sea weeds finds use in 6 615 Recommended Questions tissue culture, PCR... 3 Edit Delete
16234 The DNA fragments separated on an agarose gel can be visualised after staining with 6 615 Recommended Questions bromophenol blue, acetocarmine... 4 Edit Delete
16233 The construction of the first recombinant DNA by linking antibiotic resistance gene with a native plasmid of Salmonella typhimurium was done by 6 615 Recommended Questions Arber and Nathans, Kary Mullis... 3 Edit Delete
16232 Which one of the following techniques made it possible to genetically engineer living organisms? 6 615 Recommended Questions Hybridization, Recombinant DNA techniques... 2 Edit Delete
16231 Which one of the following is the correct statement regarding the particular psychotropic drug specified? 6 614 Recommended Questions Hashish causes altered thought perceptions and hallucinations, Opium stimulates the nervous system and causes hallucinations... 1 Edit Delete
16230 Choose the correct option regarding the drug, its source, and its effect on the body 6 614 Recommended Questions Coke - Erythroxylum coca - CNS depressant, Heroin - Papaver somniferum - Stimulant... 3 Edit Delete
16229 Which of the following drugs has a potent stimulating action of central nervous system? 6 614 Recommended Questions Morphine, Cocaine... 2 Edit Delete
16228 Which of the following drugs acts by interfering with the transport of the neurotransmitter Dopamine? 6 614 Recommended Questions Morphine, Hashish... 3 Edit Delete
16227 The skeletal structure shown in the given diagram shows the structure of: 6 614 Recommended Questions Morphine, Diacetyl morphine... 3 Edit Delete
16226 Identify the molecules (a) and (b) shown below and select the right option giving their source and use. 6 614 Recommended Questions (II) Heroin, Cannabis sativa, Depressant and slows down body functions, (II) Cannabinoid, Atropa belladonna, Produces hallucination... 3 Edit Delete
16225 What is incorrect regarding opioids? 6 614 Recommended Questions Their receptors are in CNS and CVS, They are generally taken by snorting and injection... 1 Edit Delete
16224 Select the incorrect match 6 614 Recommended Questions Biological response – α-interferon modifiers, Insomnia – Benzodiazepines... 3 Edit Delete
16223 Which is the particular type of drug that is obtained from the plants whose one flowering branch is shown below? 6 614 Recommended Questions Hallucinogen, Depressant... 1 Edit Delete
16222 The receptors for the drug shown below are located in: 6 614 Recommended Questions CNS and CVS, CVS and GIT... 3 Edit Delete
16221 Coca alkaloid or cocaine is obtained from: 6 614 Recommended Questions Papaver somniferum, Atropa belladonna... 3 Edit Delete
16220 Crack or coke interferes predominantly with the transport of 6 614 Recommended Questions Glycine, Dopamine... 2 Edit Delete
16219 Which of the following is very effective sedative and pain killer? 6 614 Recommended Questions Cocaine., Heroin.... 3 Edit Delete
16218 Which of the following drugs is not obtained from plants: 6 614 Recommended Questions Cocaine, Ganja... 4 Edit Delete
16217 Select the correct statement from the ones given below: 6 614 Recommended Questions Barbiturates when given to criminals make them tell the truth, Morphine is often given to persons who have undergone surgery as a painkiller... 2 Edit Delete
16216 Cirrhosis of liver is caused by the chronic intake of 6 614 Recommended Questions opium, alcohol... 2 Edit Delete
16215 Consider the following statements: I: Cancer is essentially a genetic disease caused by multiple mutational events. II: Cancerous cells are rapidly dividing cells that exhibit contact inhibition. III: Metastasis is the most feared complication of any cancer. Which of the above statements are true? 6 614 Recommended Questions I and II only, I and III only... 2 Edit Delete
16214 Choose the odd one with respect to physical carcinogens 6 614 Recommended Questions Tobacco smoke, Gamma rays... 1 Edit Delete
16213 Cancer is more common in older because: 6 614 Recommended Questions Their immune systems have degenerated, Secretion of certain hormones is decreased... 4 Edit Delete
16212 Cellular oncogenes can be best explained as 6 614 Recommended Questions Mutated gene., Present in normal cells.... 2 Edit Delete
16211 Cancer cells show the following feature(s) except 6 614 Recommended Questions Metastasis, Apoptosis... 4 Edit Delete
16210 DNA damage leading to neoplastic transformation can be brought about by ionizing radiations like: 6 614 Recommended Questions UV rays, Gamma rays... 2 Edit Delete
16209 Read the following statements about cancer and mark the incorrect ones: (i) Ionising radiations like x-rays and UV rays and non-ionizing radiations like gamma rays cause DNA damage leading to neoplastic transformation. (ii) CT scan uses non-ionizing radiations to accurately detect pathological and physiological changes in the living tissue. (iii) Antibodies against cancer-specific antigens are also used for detection of certain cancers. (iv) Some of the chemotherapeutic drugs are specific for certain cancers. 6 614 Recommended Questions (i), (ii) and (iii), (i) and (ii)... 2 Edit Delete
16208 A normal gene that codes for proteins that help to regulate cell growth and differentiation and can, due to mutations or increased expression, lead to neoplastic transformation of cells, is called as: 6 614 Recommended Questions Oncogene, Proto-oncogene... 2 Edit Delete
16207 Proto-oncogenes are seen in: 6 614 Recommended Questions Normal cells, Malignant cells... 1 Edit Delete
16206 Select the correct statement 6 614 Recommended Questions Cells in a malignant tumor do not show contact inhibition, Computed tomography scans use non-ionising radiations to study cancer of internal organs.... 1 Edit Delete
16205 Which one of the following statements is correct? 6 614 Recommended Questions Patients, who have undergone surgery are given cannabinoids to relieve pain, Benign tumours show the property of metastasis... 4 Edit Delete
16204 Cancer cells differ from normal cells by the 6 614 Recommended Questions Breakdown of regulatory mechanism, Loss of the property of contact inhibition... 4 Edit Delete
16203 The cells of the malignant tumors exhibit 6 614 Recommended Questions Metastasis, Contact inhibition... 1 Edit Delete
16202 Which one of the following is not a property of cancerous cells, whereas the remaining three are? 6 614 Recommended Questions They compete with normal cells for vital nutrients, They do not remain confined in the area of formation... 4 Edit Delete
16201 Which of the following statements is incorrect? 6 614 Recommended Questions MALT constitutes about 50% of the lymphoid tissue in human body, The envelope of AIDS virus encloses RNA genome... 3 Edit Delete
16200 A cell: I. Loses the property of contact inhibition II. Shows uncontrolled proliferation III. Invades the neighboring tissues This cell is probably: 6 614 Recommended Questions Mutated, Cancerous... 2 Edit Delete
16199 Consider the following statements: I: HIV is a retrovirus. II: It infects and destroys the CD4 T-lymphocytes. III: The newer antiretroviral drugs are a cure for HIV infection. Which of the above statements are true? 6 614 Recommended Questions I and II only, I and III only... 1 Edit Delete
16198 Select the correct pair representing the diagnostic test for AIDS and its treatment 6 614 Recommended Questions ELISA/Anti-retroviral drugs, Widal test/ antibiotics... 1 Edit Delete
16197 Which of the following about AIDS virus is incorrect? 6 614 Recommended Questions AIDS virus is RNA virus, The major cell infected by HIV is Helper T lymphocyte that bears CD₄ receptor sites... 3 Edit Delete
16196 Study the diagram given and choose the correct statement: 6 614 Recommended Questions A: Retrovirus replicates outside the cell, B: Viral DNA is produced by the host's enzyme - reverse transcriptase... 3 Edit Delete
16195 The immune-deficiency becomes marked once the HIV starts destroying 6 614 Recommended Questions Macrophages, T helper cells... 2 Edit Delete
16194 Mark the incorrect statement with respect to AIDS: 6 614 Recommended Questions AIDS is not spread by mere touch., Time lag between infection and the appearance of AIDS symptoms is just 5-6 months only.... 2 Edit Delete
16193 Opportunistic infections appear in AIDS patients when the HIV has destroyed: 6 614 Recommended Questions Macrophages, T cytotoxic cells... 3 Edit Delete
16192 Which of the following diseases is related with the statement "Don't die of ignorance"? 6 614 Recommended Questions Cancer, AIDS... 2 Edit Delete
16191 The early screening test for HIV infection is: 6 614 Recommended Questions ELISA, Western Blot... 1 Edit Delete
16190 HIV that causes AIDS first starts destroying: 6 614 Recommended Questions B-lymphocytes, leucocytes... 4 Edit Delete
16189 At which stage of HIV infection does one usually show symptoms of AIDS? 6 614 Recommended Questions When viral DNA is produced by reverse transcriptase., When HIV replicates rapidly in helper T-lymphocytes and damages a large number of these.... 2 Edit Delete
16188 The letter T, in T-lymphocyte refers to: 6 614 Recommended Questions thyroid, thalamus... 4 Edit Delete
16187 A certain patient, X, is suspected to be suffering from acquired immune deficiency syndrome. Which diagnostic technique will you recommend for its detection? 6 614 Recommended Questions MRI, Ultra Sound... 4 Edit Delete
16186 Complete the analogy by choosing the correct option. Typhoid: Widal test:: HIV: ______ 6 614 Recommended Questions VDRL test, Schick test... 3 Edit Delete
16185 AIDS is caused by HIV, among the following, which one is not a mode of transmission of HIV? 6 614 Recommended Questions Transfusion of contaminated blood, Sharing the infected needles... 3 Edit Delete
16184 In the human body, cell-mediated immunity is carried out by 6 614 Recommended Questions T-lymphocytes, B-lymphocytes... 1 Edit Delete
16183 (i) Thymus (ii) Spleen (iii) Appendix (iv) MALT (v) Bone marrow How many of the above are secondary lymphoid organs except? 6 614 Recommended Questions ii, iii, iv only, i, v only... 2 Edit Delete
16182 In the given diagram, A and B respectively represent: 6 614 Recommended Questions The N and the C terminus of the polypeptide, The C and the N terminus of the polypeptide... 1 Edit Delete
16181 The major histocompatibility complex is a: 6 614 Recommended Questions Series of complement-enhanced reactions to antigens, Group of antigens, coded by a family of genes, on the surface of body cells... 2 Edit Delete
16180 Mark the correct statement 6 614 Recommended Questions a & b are correct, c & d are correct... 3 Edit Delete
16179 ___A___ and ___B___ provide micro-environments for the development and maturation of T-lymphocytes. Here A and B is:- 6 614 Recommended Questions Spleen and thymus gland., Thymus gland and MALT.... 3 Edit Delete
16178 In which one of the following options the two examples are correctly matched with their particular type of immunity? 6 614 Recommended Questions Polymorphonuclear leukocytes and monocytes - Cellular barriers, Anti-tetanus and anti-snake bite injection - Active immunity... 1 Edit Delete
16177 In which of the following organ immature lymphocytes differentiate into antigen sensitive lymphocytes? 6 614 Recommended Questions Thymus, Spleen... 1 Edit Delete
16176 Which of the following cannot be included under the secondary lymphoid organ? 6 614 Recommended Questions Thymus, MALT... 1 Edit Delete
16175 The cell-mediated immunity inside the human body is carried out by: 6 614 Recommended Questions B-lymphocytes, Thrombocytes... 4 Edit Delete
16174 Which of the following is a secondary lymphoid organ? 6 614 Recommended Questions Thymus, Kidney... 4 Edit Delete
16173 A 25 year old female develops a runny nose after exposure to dust due to development of allergy. Which of the following antibodies is most likely to rise first in this condition? 6 614 Recommended Questions IgG, IgM... 3 Edit Delete
16172 MALT (Mucosa-associated lymphoid tissue) constitutes: 6 614 Recommended Questions 25 percent of the lymphoid tissue in the human body, 50 percent of the lymphoid tissue in the human body... 2 Edit Delete
16171 During an allergic reaction, the binding of antigens to IgE antibodies initiates a response, in which chemicals cause the dilation of blood vessels and a host of other physiological changes. Such chemicals are 6 614 Recommended Questions interferons, hormones... 3 Edit Delete
16170 Mark the correct statement 6 614 Recommended Questions MALT constitutes less than 25 percent of the Lymphoid tissue in the human body, In case of snake bites, the injection which is given to the victim contains preformed antibodies against the snake venom... 2 Edit Delete
16169 Antibodies present in colostrum 6 614 Recommended Questions IgG, IgA... 2 Edit Delete
16168 MALT constitutes about _____ percent of the lymphoid tissue in human body 6 614 Recommended Questions 50%, 20%... 1 Edit Delete
16167 Which of the following drugs are used in the treatment of allergy and quickly reduce the symptoms of allergy? 6 614 Recommended Questions A only, A & B... 3 Edit Delete
16166 Which of the following statements is not correct about allergies? 6 614 Recommended Questions Allergic tendency can be genetically passed on from parent to child, It is characterised by presence of large titre of IgE antibodies... 4 Edit Delete
16165 Asthma may be attributed to: 6 614 Recommended Questions accumulation of fluid in the lungs, bacterial infection of the lungs... 3 Edit Delete
16164 The cause of autoimmunity can be 6 614 Recommended Questions Physical appearance, Genetic reasons... 4 Edit Delete
16163 Consider the following four statements (1-4) regarding kidney transplant and select the two correct ones out of these. (1) Even if a kidney transplant is proper the recipient may need to take immuno-suppressants for a long time (2) The cell-mediated immune response is responsible for the graft rejection (3) The B-lymphocytes are responsible for rejection of the graft (4) The acceptance of rejection of a kidney transplant depends on specific interferons The two correct statements are 6 614 Recommended Questions (2) and (3), (3) and (4)... 4 Edit Delete
16162 In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self-cells, then it leads to 6 614 Recommended Questions graft rejection, auto-immune disease... 2 Edit Delete
16161 Read the following statements: (i) The main antibody produced as a result of allergic reaction is IgA. (ii) Modern-day lifestyle has resulted in lowering immunity and more sensitivity to allergens. (iii) Recombinant DNA technology has allowed the production of antigenic polypeptides of pathogens in bacteria or yeasts. (iv) Allergy is suppressed due to the release of histamine and serotonin. (v) The drugs like anti-histamines, adrenaline, and steroids quickly reduce the symptoms of allergy. Which of the above statements are incorrect? 6 614 Recommended Questions (ii), (iii), (v), (i), (iv)... 2 Edit Delete
16160 The class of antibodies involved in the allergic reaction is: 6 614 Recommended Questions Ig A, Ig D... 3 Edit Delete
16159 Increased asthmatic attacks in certain seasons are related to: 6 614 Recommended Questions hot and humid environment, eating fruits preserved in tin containers... 3 Edit Delete
16158 Allergies could be because of 6 614 Recommended Questions Protected environment provided in early life, Modern day lifestyle... 4 Edit Delete
16157 Mast cells secrete: 6 614 Recommended Questions hippurin, myoglobin... 3 Edit Delete
16156 Select the correct statement with respect to disease and immunisation: 6 614 Recommended Questions Injection of snake antivenom against snake bite is an example of active immunisation., If due to some reason, B-and T-lymphocytes are damaged, the body will not produce antibodies against a pathogen.... 2 Edit Delete
16155 Recombinant DNA technology has allowed the production of __A__ of pathogen in bacteria or yeast. Here A is:- 6 614 Recommended Questions Pro-toxin., Anti-bodies.... 3 Edit Delete
16154 Vaccines are available for the disease like I. Polio. II. Diptheria. III. Pneumonia. IV. Tetanus. 6 614 Recommended Questions I, II, III & IV, I and IV only... 1 Edit Delete
16153 Antitoxin consists of 6 614 Recommended Questions Antibodies, Toxoid... 1 Edit Delete
16152 Which of the following statements is not true regarding active acquired immunity:- 6 614 Recommended Questions It is species non specific, It is antigen specific... 1 Edit Delete
16151 Which of the following is used in the production of the recombinant Hepatitis B vaccine? 6 614 Recommended Questions Yeast, Microsporum... 1 Edit Delete
16150 The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies which provides infant with 6 614 Recommended Questions Naturally acquired active immunity, Artificially acquired active immunity... 3 Edit Delete
16149 A person is injected with gamma-globulin against Snake venom. This is 6 614 Recommended Questions Artificially acquired active immunity, Artificially acquired passive immunity... 2 Edit Delete
16148 Which one of the following statements is correct with respect to immunity? 6 614 Recommended Questions The antibodies against smallpox pathogens are produced by T-lymphocytes, Antibodies are protein molecules each of which has four light chains... 4 Edit Delete
16147 A person who met with a road accident is likely to develop tetanus, can be immunised by administering 6 614 Recommended Questions Weakened germs, Dead germs... 3 Edit Delete
16146 When a quick immune response is required, we can 6 614 Recommended Questions Directly inject weakened pathogen at time of emergency., Directly inject preformed antigens.... 3 Edit Delete
16145 Foetus receive some antibodies from the mother through placenta during pregnancy. This is an example of 6 614 Recommended Questions Naturally acquired active immunity, Artificially acquired passive immunity... 3 Edit Delete
16144 Consider the following statements: I: Innate immunity is a non-specific type of defense that is present at the time of birth. II: Acquired immunity is pathogen-specific and is characterized by memory. III: Memory-based acquired immunity developed in higher vertebrates based on the ability to distinguish self from non-self. Which of the above statements are true? 6 614 Recommended Questions I and II only, I and III only... 4 Edit Delete
16143 Cells involved in specific immune mechanism are 6 614 Recommended Questions Erythrocytes, Lymphocytes... 2 Edit Delete
16142 Alpha-interferons can 6 614 Recommended Questions Supress the immune system, Activate the immune system... 4 Edit Delete
16141 In the structure of an antibody; which terminal has antigen-binding site? 6 614 Recommended Questions N, C... 1 Edit Delete
16140 The main function of the white blood cell in the human intestine system is to 6 614 Recommended Questions Combat and destroy antigenic particles, produce antigens to combat antibodies... 1 Edit Delete
16139 IgM is pentamerous and weight of heavy chain is 100000 Da and that of light chain is approximately half of the heavy chain, then find the weight of IgM. 6 614 Recommended Questions More than 1500kDa, 150kDa... 1 Edit Delete
16138 Primary lymphatic organs serve as the site for: 6 614 Recommended Questions antibody formation, lymph formation... 4 Edit Delete
16137 Cells of immune system that do not provide innate immunity are 6 614 Recommended Questions T-lymphocytes, Neutrophils... 1 Edit Delete
16136 Antigen binding site in an antibody is found between 6 614 Recommended Questions two light chains, two heavy chains... 3 Edit Delete
16135 The secretion of antibodies by B lymphocytes provides: 6 614 Recommended Questions Passive immunity, Humoral immunity... 2 Edit Delete
16134 Maturation of lymphocytes takes place in 6 614 Recommended Questions thymus, Bone marrow... 4 Edit Delete
16133 Interferon is a glycoprotein which is: 6 614 Recommended Questions Antibacterial, Antifungal... 3 Edit Delete
16132 Anamnestic Response is generated by 6 614 Recommended Questions First interaction of the pathogen with the body, Second interaction of the pathogen with the body... 2 Edit Delete
16131 The type of immunity responsible for graft rejection by a recipient body is 6 614 Recommended Questions Innate immunity, Humoral immunity... 3 Edit Delete
16130 Interferons are secreted by: 6 614 Recommended Questions Liver, Spleen... 3 Edit Delete
16129 When plants/animals are infected with virus, they may produce an anti-viral substance that is capable of inhibiting the multiplication of that virus. Identify the correct name of this substance. 6 614 Recommended Questions Virion, Antiviron... 4 Edit Delete
16128 The B lymphocytes produce an army of proteins in response to pathogens into our body to fight with them and T lymphocytes help B lymphocytes to produce that army. And such proteins are known as 6 614 Recommended Questions Cytokines, Interferons... 3 Edit Delete
16127 As the housefly is related with Entamoeba histolytica, Aedes mosquito is related with 6 614 Recommended Questions Filariasis, Dengue... 2 Edit Delete
16126 The pathogen Microsporum responsible for ringworm disease in humans belongs to the same Kingdom of organisms at that of: 6 614 Recommended Questions Ascaris, a roundworm, Taenia, a tapeworm... 4 Edit Delete
16125 Not all the infections occurring in the body result in disease because of 6 614 Recommended Questions All infections are not strong enough to cause disease, Body fights and is able to defend from few foreign agents... 3 Edit Delete
16124 Mucus coating of the epithelium lining the respiratory, gastrointestinal and urogenital tracts, helps in trapping microbes entering our body. This is included in which of the following barriers? 6 614 Recommended Questions Physical barriers, Physiological barriers... 1 Edit Delete
16123 Which cells are the first to phagocytize foreign particles in the tissues such as bacteria in a wound? 6 614 Recommended Questions fibroblasts, white blood cells... 3 Edit Delete
16122 Fill in the blanks in the different columns of the table given below Disease Common cold B Pneumonia Filariasis Causal organism and Part it inputs A Trichophyton Skin, nails and scalp C Wuchereria Lymphatic vessels Medium of transfer Droplets from sneezing of infected persons Using towels of infected individuals Droplets/aerosols Released by an infected person, sharing utensils D In which one of the following options all the blanks A, B, C and D are correctly filled. 6 614 Recommended Questions A- Rhinovirus. Nose and respiratory passage not lungs B - Ringworm C - Haemophilus influenzae. Alveoli of lungs D - Contaminated food and water, A- Coryza virus. Alveoli of lungs B - Ringworm C - Streptococcus pneumoniae. Nose and respiratory passage D - Culex mosquito... 4 Edit Delete
16121 Which of the following Fungi is not capable of causing ringworm infection in a man? 6 614 Recommended Questions Microsporum, Trichophyton... 4 Edit Delete
16120 Refer to the given figure and choose the organism not related to the condition shown here. 6 614 Recommended Questions Microsporum, Trichophyton... 3 Edit Delete
16119 Ringworms are characterized by 6 614 Recommended Questions Dry leisons on skin, nails, and scalp, Dry and scaly leisons on skin and nails... 4 Edit Delete
16118 Odd one out? 6 614 Recommended Questions PMNL - neutrophils, Monocytes... 4 Edit Delete
16117 Virus-infected cells secrete proteins called interferon which protect non-infected cells from further viral infection. This comes under 6 614 Recommended Questions Physical barrier, Physiological barrier... 4 Edit Delete
16116 Ringworm in humans can be caused by infection with all the following except: 6 614 Recommended Questions Microsporum, Taenia... 2 Edit Delete
16115 Ringworms occur due to 6 614 Recommended Questions Fungal infections which are supported by dryness or cold ambiance, Fungal infections which are supported by heat and moisture... 2 Edit Delete
16114 Which of the following statements is correct? A. Common cold - Droplet Infection. B. Typhoid - Contaminated food & water. C. AIDS - Shaking hands. D. Ringworm - Using infected towels. 6 614 Recommended Questions A and B, C and D... 4 Edit Delete
16113 Acid in stomach, saliva in the mouth, tears from eyes, all prevent microbial growth belong to which of the following barriers? 6 614 Recommended Questions Physical barrier, Physiological barrier... 2 Edit Delete
16112 Select the correct match: 6 614 Recommended Questions Dengue, chikungunya, filariasis - Vector borne disease, Acid, saliva, mucus in GIT - Physiological barriers... 1 Edit Delete
16111 Internal bleeding, muscular pain, fever, anaemia and blockage of the intestinal passage are the common symptoms of 6 614 Recommended Questions Amoebiasis, Elephantiasis... 3 Edit Delete
16110 Ingestion of food and water contaminated with infective eggs is the primary route of infection for 6 614 Recommended Questions Taenia solium, Wuchereria bancrofti... 4 Edit Delete
16109 The pathogens responsible for causing elephantiasis are transmitted to a healthy person through: 6 614 Recommended Questions Droplet, Female mosquito vector... 2 Edit Delete
16108 Given below are pairs of pathogens, diseases caused by them and their classification. Which of these is incorrectly matched? 6 614 Recommended Questions Pneumonia - Haemophilus influenzae - Bacteria, Typhoid - Salmonella - Bacteria... 3 Edit Delete
16107 Which of the following is a pathogenic helminth? 6 614 Recommended Questions Ascaris, Microsporum... 1 Edit Delete
16106 Infection of Ascaris usually occurs by: 6 614 Recommended Questions Eating imperfectly cooked pork., Tse - tse fly.... 4 Edit Delete
16105 The slowly developing chronic inflammation of the organs in which they live for many years. Here they refer to 6 614 Recommended Questions Filarial worms, Roundworms... 1 Edit Delete
16104 Adults of Wuchereria bancrofti attacks 6 614 Recommended Questions exeretory system, nervous system... 4 Edit Delete
16103 The genital organs are affected resulting in gross deformities. This symptom is associated with 6 614 Recommended Questions AIDS, Cancer... 3 Edit Delete
16102 Which of the following cannot be the parasites of intestine? 6 614 Recommended Questions Tapeworm, Pinworm... 3 Edit Delete
16101 Refer to the given figure depicting a diseased condition in humans and name the worm causing this disease. 6 614 Recommended Questions Epidermophyton floccosum, Ascaris lumbricoides... 3 Edit Delete
16100 Match the following columns and select the correct option: Column I (i) Typhoid (ii) Malaria (iii) Pneumonia (iv) Filariasis Column II (a) Haemophilus influenzae (b) Wuchereria bancrofti (c) Plasmodium vivax (d) Salmonella typhi 6 614 Recommended Questions (i)-d, (ii)-c, (iii)-a, (iv)-b, (i)-c, (ii)-d, (iii)-b, (iv)-a... 1 Edit Delete
16099 Elephantiasis in man is caused by 6 614 Recommended Questions Ancylostoma duodenale, Ascaris lumbricoides... 4 Edit Delete
16098 In Filariasis; 6 614 Recommended Questions The lymphatic vessels of the upper limbs are affected, The blood vessels of the upper limbs are affected... 3 Edit Delete
16097 Amoebiasis or amoebic dysentery is caused by 6 614 Recommended Questions Entamoeba histolytica, a protozoan parasite in the small intestine, Escherichia coli, a protozoan parasite in the small intestine... 3 Edit Delete
16096 Choose the incorrect match with respect to disease, pathogen and its symptoms 6 614 Recommended Questions Amoebiasis Entamoeba coli Internal bleeding Blockage of intestinal passage, Filariasis Wuchereria bancrofti Swelling of lymphatic vessels of lower limbs... 1 Edit Delete
16095 Which of the following protozoan disease is spread by housefly transmitting parasite from faeces of infected person to food and food products? 6 614 Recommended Questions Amoebiasis, Ascariasis... 1 Edit Delete
16094 Entamoeba histolytica is transmitted through 6 614 Recommended Questions Insect bite, Bird droppings... 4 Edit Delete
16093 The following symptoms: constipation, abdominal pain, cramps, stools with excess mucous and blood clots; belong to which category? 6 614 Recommended Questions Amoebiasis, Malaria... 1 Edit Delete
16092 Consider the following statements: I: Plasmodium falciparum causes malignant tertian malaria. II: Release of hemosiderin from burst RBCs is responsible for paroxysms of malarial attacks. III: Sporozoites are the infectious forms of Plasmodium. Which of the above statements are true? 6 614 Recommended Questions I and II only, I and III only... 2 Edit Delete
16091 Which of following stage of plasmodium is formed in mosquito: 6 614 Recommended Questions Sporozoite, Gametes... 3 Edit Delete
16090 Take a glance of a part of the life cycle of plasmodium given below as events A, B, C and D along with their description. How many of the above events are correctly described? 6 614 Recommended Questions One, Two... 3 Edit Delete
16089 Consider the given stages in the life cycle of Plasmodium and choose the correctly matched pair: 6 614 Recommended Questions A Merozoites infect humans when mosquito bites, B The parasite reproduces sexually in liver cells... 3 Edit Delete
16088 If an infected person is bitten by a female Anopheles mosquito, what will it take up with its blood meal to become another infected mosquito for the spread of disease? 6 614 Recommended Questions Gametocytes of plasmodium, Sporophyte of plasmodium... 1 Edit Delete
16087 Mark out the incorrect statement regarding infection of Entamoeba histolytica 6 614 Recommended Questions It is a type of monogenetic parasite, Stools characterised with excess mucous and blood clots... 3 Edit Delete
16086 Motile zygote of Plasmodium occurs in: 6 614 Recommended Questions Gut of female Anopheles, Salivary glands of Anopheles... 1 Edit Delete
16085 Which of the following statement is not correct regarding malarial infection? 6 614 Recommended Questions Plasmodium enters the human body as sporozoites through the bite of freshly moulted female Anopheles mosquito, High fever recurring every three to four days... 1 Edit Delete
16084 Which of the following is mismatched with respect to the following events which occur in the life cycle? 6 614 Recommended Questions Erythrocytic schizogony: The rupture of RBCs is associated with the release of a toxic substance hemozoin, which is responsible for the chill and high fever, Gametocytes: Sexual stages develop in intestine of mosquito... 2 Edit Delete
16083 Select correct sequence about life cycle of Plasmodium: 6 614 Recommended Questions Sporozoites (human)→RBCs→Liver cells→Gametocytes in blood→Blood meal (female mosquito)→Multiply (female mosquito)→Sporozoites (female mosquito), Sporozoites (human)→Liver cells→RBCs→Gametocytes in blood→Blood meal (female mosquito)→multiply (female mosquito)→Sporozoites (female mosquito)... 2 Edit Delete
16082 In which parts of the body of the host do the following events in the life cycle of Plasmodium take place? For this, match the items given in column I with column II. Column I a. Fertilization b. Development of gametocytes c. Release of sporozoites d. Asexual reproduction Column II i. Liver cells/RBC of hosts human beings ii. Body cavity of mosquito iii. Stomach of mosquito/vector iv. RBC of human beings 6 614 Recommended Questions a(iv), b(iii), c(ii), d(i), a(iv), b(iii), c(i), d(ii)... 3 Edit Delete
16081 A person suffering from a disease caused by Plasmodium, experiences chill and fever at the time when? 6 614 Recommended Questions The sporozoites released from RBCs are being rapidly killed and broken down inside spleen, The trophozoites reach maximum growth and give out certain toxins... 3 Edit Delete
16080 Sexual reproduction of parasite (plasmodium) occurs in 6 614 Recommended Questions Liver, RBC... 3 Edit Delete
16079 The sporozoites that cause infection when a female Anopheles mosquito bites a human being are found in 6 614 Recommended Questions Hepatocytes of human, RBCs of mosquito... 4 Edit Delete
16078 Gambusia is a..... introduced to feed on..... 6 614 Recommended Questions Mosquito, larvae, Fish, mosquito-larvae... 2 Edit Delete
16077 Release of which of the following is responsible for recurrent malarial symptoms? 6 614 Recommended Questions Sporozoites, Haemozoin... 2 Edit Delete
16076 Which of the following statements is incorrect with respect to malaria? 6 614 Recommended Questions Malaria is a disease caused by a protozoan, Malignant malaria is caused by Plasmodium falciparum... 3 Edit Delete
16075 In malaria infection the rupture of RBCs is associated with release of a toxic substance called 6 614 Recommended Questions Hypnotoxin, Haemozoin... 2 Edit Delete
16074 In malaria; the female Anopheles mosquito is 6 614 Recommended Questions Host, Vector... 3 Edit Delete
16073 Common cold differs from pneumonia in, that: 6 614 Recommended Questions Pneumonia is a communicable disease, whereas common cold is a nutritional deficiency disease, Pneumonia can be prevented by a live attenuated bacterial vaccine, whereas the common cold has no effective vaccine... 4 Edit Delete
16072 The most infectious human ailment caused by a virus is 6 614 Recommended Questions Common cold, AIDS... 1 Edit Delete
16071 Which of the following is not an intestinal parasite? 6 614 Recommended Questions Entamoeba histolytica, Ascaris... 4 Edit Delete
16070 The means of spread of which two infectious diseases is common? 6 614 Recommended Questions Malaria and Filariasis, Pneumonia and the common cold... 2 Edit Delete
16069 Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature, and correctly described? 6 614 Recommended Questions Plasmodium falciparum - a protozoan pathogen causing the most serious type of malaria, Felis tigris - The Indian tiger, well protected in Gir forests.... 1 Edit Delete
16068 Common cold is not cured by antibiotics because it is 6 614 Recommended Questions caused by a Gram-negative bacterium, not an infectious disease... 3 Edit Delete
16067 The common cold is characterized by nasal congestion and discharge, sore throat, hoarseness, cough, headache tiredness, etc. which usually lasts for 3-7 days. Infection may occur through 6 614 Recommended Questions Contaminated food and water, Hypodermic needles... 3 Edit Delete
16066 Infection of alveoli of lungs by Streptococcus pneumoniae and Haemophilus influenzae leads to alveoli becoming fluid-filled and leads to severe problems in respiration is an example of 6 614 Recommended Questions A bacterial disease, A viral disease... 1 Edit Delete
16065 Infection with Hemophilus influenza, especially in children, can cause: 6 614 Recommended Questions Diptheria, SARS... 3 Edit Delete
16064 Each of the following statements concerning pneumonia are correct, except 6 614 Recommended Questions It is caused by Streptococcus pneumoniae and Hemophilus influenzae, Pneumonia bacteria grow better at 33°C than at 37°C, hence they tend to cause the disease in upper respiratory tract rather than the lower respiratory tract... 2 Edit Delete
16063 Out of the following diseases which are caused due to bacterial infection? 6 614 Recommended Questions a & b only, b & c only... 3 Edit Delete
16062 By inhaling aerosols released by an infected person causes the spread of which disease certainly? 6 614 Recommended Questions Malaria, Pneumonia... 2 Edit Delete
16061 Salmonella typhi causes: 6 614 Recommended Questions An acute infection of intestine that causes high fever and weakness, Enlargement of spleen and pain in stomach... 4 Edit Delete
16060 Which of the following pathogens is not transmitted by vector? 6 614 Recommended Questions Salmonella typhi, Alpha virus... 1 Edit Delete
16059 Typhoid is 6 614 Recommended Questions Caused by a bacterium which infects only the small intestine by means of food and water that is contaminated, Caused by protozoan which infects small intestine by means of contaminated water and food and then migrates to other organs through blood... 3 Edit Delete
16058 A cook, carrier of a disease, and spread the disease for many years by the food she prepared. This information is associated with a classic case on medicine, that of 6 614 Recommended Questions Mary Melon nicknamed Typhoid Mary, Typhoid Mary nicknamed Mary Mallon... 3 Edit Delete
16057 Intestinal perforation is the ultimate symptom of the extreme stage of which disorder? 6 614 Recommended Questions Malaria, Filariasis... 3 Edit Delete
16056 Which of the following sets represents diseases communicated through contaminated food and water? 6 614 Recommended Questions Typhoid and Tuberculosis, Typhoid and Cholera... 2 Edit Delete
16055 Widal test is carried out to test 6 614 Recommended Questions malaria, diabetes mellitus... 4 Edit Delete
16054 Widal test is carried out to test 6 614 Recommended Questions malaria, diabetes mellitus... 4 Edit Delete
16053 Select the option that completes the given analogy Pneumonia: Streptococcus pneumoniae:: Typhoid: _______ 6 614 Recommended Questions Plasmodium falciparum, Haemophilus influenzae... 3 Edit Delete
16052 Pathogens are not 6 614 Recommended Questions Most of the parasites, Result in morphological and functional damage... 4 Edit Delete
16051 What is necessary for achieving good health? 6 614 Recommended Questions Vaccination against genetic disorders, Awareness about diseases and control of vectors, Vaccination, awareness about diseases and proper disposal of waste... 2 Edit Delete
16050 Which of the following won't affect health? 6 614 Recommended Questions Genetic disorders And infections, Mind and mental state with blackbile... 2 Edit Delete
16049 The earlier concept of Health was 6 614 Recommended Questions A state of body and mind, Where there was a balance of certain humors... 4 Edit Delete
16048 The assertion by Hippocrates about health was 6 614 Recommended Questions Same as that of Indian Ayurveda system, Different from Indian Ayurveda System... 4 Edit Delete
16047 Select the option where all columns are correctly matched: 6 614 Recommended Questions Malignant malaria - Plasmodium ovale - Cerebral involvement, Typhoid - Salmonella typhi - Confirmed by the VDRL test... 4 Edit Delete
16046 The person with Blackbile were considered to be 6 614 Recommended Questions Belonged to black pigmentation group, Belonged to hot personality... 3 Edit Delete
16045 Good humour hypothesis of health was disproved by 6 614 Recommended Questions The discovery of blood circulation by William Harvey using experimental methods, Demonstration of normal body temperature in people with blackbile using thermometer... 3 Edit Delete
16044 Yoga does not contribute in which form of health 6 614 Recommended Questions Physical, Mental... 3 Edit Delete
16043 What is the present concept of health? 6 614 Recommended Questions Mind influences directly our immune system, Mind influences our immune system by means of neural system... 4 Edit Delete
16042 Which of the following statements is false? 6 614 Recommended Questions When people are healthy they are more efficient at work., Regular exercise is very important to maintain good health.... 3 Edit Delete
16041 What is not that important to maintain good health as other options are? 6 614 Recommended Questions Balanced Diet, Personal hygiene... 4 Edit Delete
16040 114 1 114 Recommended Questions 1, 2... 3 Edit Delete
16039 $\text{Three sound waves of equal amplitudes have frequencies of } (n - 1), n, \text{ and } (n + 1).$ $\text{They superimpose to give beats. The number of beats produced per second will be:}$ 1 114 Recommended Questions $1$, $4$... 4 Edit Delete
16038 $\text{Two identical piano wires kept under the same tension } T \text{ have a fundamental frequency of } 600 \text{ Hz. The fractional increase in the tension of one of the wires which will lead to the occurrence of } 6 \text{ beats/s when both the wires oscillate together would be:}$ 1 114 Recommended Questions $0.02$, $0.03$... 1 Edit Delete
16037 $\text{Two vibrating tuning forks produce progressive waves given by}$ $Y_1 = 4 \sin 500\pi t \text{ and } Y_2 = 2 \sin 506\pi t.$ $\text{The number of beats produced per minute is:}$ 1 114 Recommended Questions $3$, $360$... 3 Edit Delete
16036 $\text{Each of the two strings of lengths } 51.6 \text{ cm and } 49.1 \text{ cm is tensioned separately by } 20 \text{ N of force.}$ $\text{The mass per unit length of both strings is the same and equals } 1 \text{ g/m.}$ $\text{When both the strings vibrate simultaneously, the number of beats is:}$ 1 114 Recommended Questions $5$, $7$... 2 Edit Delete
16035 $\text{Eleven tuning forks are arranged in increasing order of frequency in such a way that any two consecutive tuning forks produce 4 beats per second. The highest frequency is twice that of the lowest. The highest and the lowest frequencies (in Hz) are, respectively:}$ 1 114 Recommended Questions $100 \text{ and } 50$, $44 \text{ and } 22$... 3 Edit Delete
16034 $\text{Two identical wires are stretched by the same tension of } 100 \text{ N and each emits a note of } 200 \text{ Hz.}$ $\text{If tension in one wire is increased by } 1 \text{ N, the number of beats heard per second when the wires are plucked will be:}$ 1 114 Recommended Questions $1$, $2$... 2 Edit Delete
16033 $\text{A tuning fork of frequency } 512 \text{ Hz makes } 4 \text{ beats/s with the vibrating strings of a piano.}$ $\text{The beat frequency decreases to } 2 \text{ beats/s when the tension in the piano strings is slightly increased.}$ $\text{The frequency of the piano string before increasing the tension was:}$ 1 114 Recommended Questions $510 \text{ Hz}$, $514 \text{ Hz}$... 4 Edit Delete
16032 $\text{Two tuning forks, } A \text{ and } B, \text{ vibrating simultaneously produce } 5 \text{ beats. The frequency of } B \text{ is } 512 \text{ Hz. It is seen that if one arm of } A \text{ is filed a little, then the number of beats increases. The frequency of } A \text{ in Hz will be:}$ 1 114 Recommended Questions $502$, $507$... 3 Edit Delete
16031 $\text{Tuning fork } F_1 \text{ has a frequency of } 256 \text{ Hz and it is observed to produce } 6 \text{ beats/second with another tuning fork } F_2. \text{ When } F_2 \text{ is loaded with wax, it still produces } 6 \text{ beats/second with } F_1. \text{ The frequency of } F_2 \text{ before loading was:}$ 1 114 Recommended Questions $253 \text{ Hz}$, $262 \text{ Hz}$... 2 Edit Delete
16030 101 1 114 Recommended Questions 1, 2... 4 Edit Delete
16029 $\text{Two wires, } A \text{ and } B, \text{ of a musical instrument 'Sitar' produce } 3 \text{ beats per second. If the tension of } B \text{ is raised, the number of beats becomes } 1 \text{ beat per second. If the frequency of } A \text{ is } 450 \text{ Hz, then the original frequency of } B \text{ will be:}$ $1. \ 447 \ \text{Hz}$ $2. \ 453 \ \text{Hz}$ $3. \ 449 \ \text{Hz}$ $4. \ 451 \ \text{Hz}$ 1 114 Recommended Questions $447 \ \text{Hz}$, $453 \ \text{Hz}$... 1 Edit Delete
16028 $\text{A student tunes his guitar by striking a } 120 \text{ Hz with a tuning fork and playing the } 4^{\text{th}} \text{ string at the same time. By keen observation, he hears the amplitude of the combined sound oscillating thrice per second. Which of the following frequencies is most likely the frequency of the } 4^{\text{th}} \text{ string on his guitar?}$ 1 114 Recommended Questions $130$, $117$... 2 Edit Delete
16027 $\text{A source of unknown frequency gives 4 beats/s when sounded with a source of known frequency of } 250 \ \text{Hz.}$ $\text{The second harmonic of the source of unknown frequency gives five beats per second when sounded with a source of frequency of } 513 \ \text{Hz.}$ $\text{The unknown frequency will be:}$ 1 114 Recommended Questions $246 \ \text{Hz}$, $240 \ \text{Hz}$... 4 Edit Delete
16026 $\text{Two sound waves given by the equations } y = A \sin 122\pi t \text{ and } y = A \sin 128\pi t \text{ pass through a point simultaneously. The number of beats per second is:}$ 1 114 Recommended Questions $6$, $5$... 4 Edit Delete
16025 $\text{Two organ pipes closed at one end produce } 5 \text{ beats per second in fundamental mode. If the ratio of their lengths is } 10 : 11, \text{ then their frequencies (in Hz) are:}$ 1 114 Recommended Questions $55, 50$, $105, 100$... 1 Edit Delete
16024 $\text{A set of 20 tuning forks is arranged in a series of increasing frequencies. If each fork gives 4 beats with respect to the preceding fork and the frequency of the last fork is twice the frequency of the first, then the frequency of the last fork is:}$ $1.\ 152\ \text{Hz}$ $2.\ 234\ \text{Hz}$ $3.\ 134\ \text{Hz}$ $4.\ 144\ \text{Hz}$ 1 114 Recommended Questions $152\ \text{Hz}$, $234\ \text{Hz}$... 1 Edit Delete
16023 $\text{Two sitar strings, } A \text{ and } B, \text{ playing the note Ga, are slightly out of tune and produce } 6 \text{ Hz beats. The tension in the string } A \text{ is slightly reduced, and the beat frequency is found to be reduced to } 3 \text{ Hz. If the original frequency of } A \text{ is } 324 \text{ Hz, what is the frequency of } B?$ 1 114 Recommended Questions $316 \text{ Hz}$, $318 \text{ Hz}$... 2 Edit Delete
16022 $\text{A source of sound gives 5 beats per second when sounded with another source of frequency 100 per second.}$ $\text{The second harmonic of the source, together with a source of frequency 205 per second, gives 5 beats per second.}$ $\text{What is the frequency of the source?}$ 1 114 Recommended Questions $95 \ \text{Hz}$, $100 \ \text{Hz}$... 3 Edit Delete
16021 $\text{Given below are two statements:}$ $\text{Assertion (A): In a stationary wave, there is no transfer of energy.}$ $\text{Reason (R): The ratio of kinetic energy to potential energy is independent of the position.}$ 1 114 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
16020 $\text{Two waves are propagating to the point } P \text{ along a straight line produced by two sources, } A \text{ and } B, \text{ of simple harmonic and equal frequency. The amplitude of every wave at } P \text{ is } a \text{ and the phase of } A \text{ is ahead by } \frac{\pi}{3} \text{ than that of } B, \text{ and the distance } AP \text{ is greater than } BP \text{ by } 50 \text{ cm. If the wavelength is } 1 \text{ m, then the resultant amplitude at point } P \text{ will be:}$ 1 114 Recommended Questions $2a$, $a\sqrt{3}$... 4 Edit Delete
16019 $\text{A cylindrical tube } (L = 125 \text{ cm}) \text{ is resonant with a tuning fork at a frequency of } 330 \text{ Hz.}$ $\text{If it is filled with water, then to get the resonance again, the minimum length of the water column will be: } (v_{\text{air}} = 330 \text{ m/s})$ 1 114 Recommended Questions $50 \text{ cm}$, $60 \text{ cm}$... 1 Edit Delete
16018 $\text{In a stationary wave along a string, the strain is:}$ $1.\ \text{zero at the antinodes}$ $2.\ \text{maximum at the antinodes}$ $3.\ \text{zero at the nodes}$ $4.\ \text{maximum at the nodes}$ 1 114 Recommended Questions $\text{zero at the antinodes}$, $\text{maximum at the antinodes}$... 4 Edit Delete
16017 $\text{The equation of a standing wave in a string is}$ $y = (200 \text{ m}) \sin\left(\frac{2\pi}{50} x\right) \cos\left(\frac{2\pi}{0.01} t\right)$ $\text{where } x \text{ is in metres and } t \text{ is in seconds.}$ $\text{At the position of antinode, how many times does the distance of a string particle become 200 m from its mean position in one second?}$ 1 114 Recommended Questions $100 \text{ times}$, $50 \text{ times}$... 3 Edit Delete
16016 $\text{If the transverse displacement of a string clamped at both ends is given by } y(x, t) = (12 \text{ cm}) \sin(6.28x) \cos(3.14t), \text{ where } x \text{ is in cm and } t \text{ is in seconds, then which of the following is not true?}$ 1 114 Recommended Questions $\text{The velocity of the component wave is } 0.5 \text{ cm/s.}$, $\text{The amplitude of one of the component waves is } 6 \text{ cm.}$... 4 Edit Delete
16015 $\text{A sufficiently long-closed organ pipe has a small hole at its bottom. Initially, the pipe is empty. Water is poured into the pipe at a constant rate. The fundamental frequency of the air column in the pipe:}$ 1 114 Recommended Questions $\text{Constantly increases.}$, $\text{Increases at first, then becomes constant.}$... 2 Edit Delete
16014 $\text{If we study the vibration of a pipe open at both ends, then which of the following statements is not true:}$ 1 114 Recommended Questions $\text{Odd harmonics of the fundamental frequency will be generated.}$, $\text{All harmonics of the fundamental frequency will be generated.}$... 3 Edit Delete
16013 $\text{Stationary waves can be obtained in an air column even if interfering waves have different:}$ $1. \text{ Amplitude}$ $2. \text{ Wavelength}$ $3. \text{ Velocity}$ $4. \text{ Frequency}$ 1 114 Recommended Questions $\text{Amplitude}$, $\text{Wavelength}$... 1 Edit Delete
16012 $\text{A vibrating tuning fork of frequency } n \text{ is placed near the open end of a long cylindrical tube.}$ $\text{The tube has a side opening and is also fitted with a movable reflecting piston.}$ $\text{As the piston is moved through } 8.75 \text{ cm, the intensity of sound changes from}$ $\text{a maximum to a minimum. If the speed of sound is } 350 \text{ metre per second,}$ $\text{then } n \text{ is:}$ 1 114 Recommended Questions $500 \text{ Hz}$, $1000 \text{ Hz}$... 2 Edit Delete
16011 $\text{Three waves of equal frequency having amplitudes of } 10 \, \mu m, 4 \, \mu m \text{ and } 7 \, \mu m \text{ arrive at a given point with a successive phase difference of } \frac{\pi}{2}. \text{ The amplitude of the resulting wave (in } \mu m\text{) is given by:}$ 1 114 Recommended Questions $7$, $6$... 3 Edit Delete
16010 $\text{An organ pipe that is closed at one end has a fundamental frequency of } 1500 \text{ Hz. The maximum number of overtones generated by this pipe that a normal person can hear is:}$ 1 114 Recommended Questions $14$, $13$... 3 Edit Delete
16009 $\text{Consecutive frequencies emitted from an organ pipe are } 75 \text{ Hz}, 125 \text{ Hz}, 175 \text{ Hz. The frequency of the tenth overtone will be:}$ 1 114 Recommended Questions $275 \text{ Hz}$, $175 \text{ Hz}$... 3 Edit Delete
16008 $\text{The number of possible natural oscillations of the air column in a pipe closed at one end of a length of } 85 \text{ cm whose frequencies lie below } 1250 \text{ Hz is:}$ $\text{(velocity of sound } 340 \text{ ms}^{-1})$ 1 114 Recommended Questions $4$, $5$... 4 Edit Delete
16007 $\text{The two nearest harmonics of a tube close at one end and open at the other end are } 220 \text{ Hz and } 260 \text{ Hz. What is the fundamental frequency of the system?}$ 1 114 Recommended Questions $10 \text{ Hz}$, $20 \text{ Hz}$... 2 Edit Delete
16006 $\text{A pipe closed at one end produces a fundamental note of } 412 \text{ Hz. It is cut into two pieces of equal length. The fundamental nodes produced by the two pieces are:}$ $1.\ 206 \text{ Hz, } 412 \text{ Hz}$ $2.\ 412 \text{ Hz, } 824 \text{ Hz}$ $3.\ 206 \text{ Hz, } 824 \text{ Hz}$ $4.\ 824 \text{ Hz, } 1648 \text{ Hz}$ 1 114 Recommended Questions $206 \text{ Hz, } 412 \text{ Hz}$, $412 \text{ Hz, } 824 \text{ Hz}$... 4 Edit Delete
16005 $\text{Stationary waves are formed on a stretched string. If the wavelength is } \lambda, \text{ then the distance between two points having the maximum displacement can be:}$ 1 114 Recommended Questions $\frac{3\lambda}{2}$, $4\lambda$... 4 Edit Delete
16004 $A \ 1 \ \text{m, long tube open at one end with a movable piston at the other end}$ $\text{shows resonance with a fixed frequency source (a tuning fork of frequency}$ $340 \ \text{Hz}) \ \text{when the minimum tube length is} \ 25.5 \ \text{cm. The speed of sound in air}$ $\text{at the temperature of the experiment is:}$ $(\text{The edge effects may be neglected.})$ 1 114 Recommended Questions $324.16 \ \text{m/s}$, $320 \ \text{m/s}$... 4 Edit Delete
16003 $\text{A 100 cm wire of mass 40 g is fixed at both ends. A tuning fork, vibrating at a frequency of 50 Hz, sets the wire into resonance in its fundamental mode. Then, the tension in the wire is:}$ 1 114 Recommended Questions $400 \text{ N}$, $100 \text{ N}$... 1 Edit Delete
16002 $\text{A cylindrical tube open at both ends has a fundamental frequency } f_0 \text{ in the air.}$ $\text{The tube is dipped vertically in water such that half its length is inside water.}$ $\text{The fundamental frequency of the air column now will be:}$ 1 114 Recommended Questions $\frac{3f_0}{4}$, $f_0$... 2 Edit Delete
16001 $\text{The third overtone of a closed pipe is observed to be in unison with the second overtone of an open pipe. The ratio of the lengths of the pipes is:}$ 1 114 Recommended Questions $\frac{3}{2}$, $\frac{5}{3}$... 4 Edit Delete
16000 $\text{The maximum possible wavelength in an open organ pipe of length } l \text{ is:}$ 1 114 Recommended Questions $l$, $2l$... 2 Edit Delete
15999 $\text{A closed pipe and an open pipe have their first overtones identical in frequency. Their lengths are in the ratio:}$ 1 114 Recommended Questions $1 : 2$, $2 : 3$... 3 Edit Delete
15998 $\text{A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of } 27^\circ \text{C, two successive resonances are produced at } 20 \text{ cm and } 73 \text{ cm column length. If the frequency of the tuning fork is } 320 \text{ Hz, the velocity of sound in air at } 27^\circ \text{C is:}$ 1 114 Recommended Questions $330 \text{ m/s}$, $339 \text{ m/s}$... 2 Edit Delete
15997 $\text{A tuning fork with a frequency of } 800 \text{ Hz produces resonance in a resonance column tube with the upper end open and the lower end closed by the water surface. Successive resonances are observed at lengths of } 9.75 \text{ cm, } 31.25 \text{ cm, and } 52.75 \text{ cm. The speed of the sound in the air is:}$ 1 114 Recommended Questions $500 \text{ m/s}$, $156 \text{ m/s}$... 3 Edit Delete
15996 $\text{In an experiment with a sonometer, a tuning fork of frequency } 256 \text{ Hz}$ $\text{resonates with a length of } 25 \text{ cm and another tuning fork resonates with a}$ $\text{length of } 16 \text{ cm. If the tension of the string remains constant, then the}$ $\text{frequency of the second tuning fork will be:}$ 1 114 Recommended Questions $163.84 \text{ Hz}$, $400 \text{ Hz}$... 2 Edit Delete
15995 $\text{A string is stretched between fixed points separated by } 75.0 \text{ cm. It is observed to have resonant frequencies of } 420 \text{ Hz and } 315 \text{ Hz. There are no other resonant frequencies between these two. The lowest resonant frequency for these strings is:}$ 1 114 Recommended Questions $155 \text{ Hz}$, $205 \text{ Hz}$... 4 Edit Delete
15994 $\text{The fundamental frequency of a closed organ pipe of a length } 20 \text{ cm is equal to the second overtone of an organ pipe open at both ends. The length of the organ pipe open at both ends will be:}$ 1 114 Recommended Questions $80 \text{ cm}$, $100 \text{ cm}$... 3 Edit Delete
15993 $\text{A string of length } 3 \text{ m and a linear mass density of } 0.0025 \text{ kg/m is fixed at both ends.}$ $\text{One of its resonance frequencies is } 252 \text{ Hz.}$ $\text{The next higher resonance frequency is } 336 \text{ Hz.}$ $\text{Then the fundamental frequency will be:}$ 1 114 Recommended Questions $84 \text{ Hz}$, $63 \text{ Hz}$... 1 Edit Delete
15992 $\text{If a standing wave having 3 nodes and 2 antinodes is formed within } 1.21 \, \text{\AA} \text{ distance, then the wavelength of the standing wave will be:}$ 1 114 Recommended Questions $1.21 \, \text{\AA}$, $2.42 \, \text{\AA}$... 1 Edit Delete
15991 $\text{The equation of a stationary wave is } y = 0.8 \cos\left(\frac{\pi x}{20}\right) \sin 200(\pi t), \text{ where } x \text{ is in cm and } t \text{ is in sec. The separation between consecutive nodes will be:}$ 1 114 Recommended Questions $20 \text{ cm}$, $10 \text{ cm}$... 1 Edit Delete
15990 $\text{An air column, closed at one end and open at the other, resonates with a tuning fork when the smallest length of the column is } 50 \text{ cm.}$ $\text{The next larger length of the column resonating with the same tuning fork will be:}$ 1 114 Recommended Questions $100 \text{ cm}$, $150 \text{ cm}$... 2 Edit Delete
15989 $\text{The fundamental frequency of an open organ pipe is } 200 \text{ Hz. If one end of the pipe is closed, its fundamental frequency becomes:}$ 1 114 Recommended Questions $100 \text{ Hz}$, $200 \text{ Hz}$... 1 Edit Delete
15988 $\text{The length of the string of a musical instrument is } 90 \text{ cm and has a fundamental frequency of } 120 \text{ Hz. Where should it be pressed to produce a fundamental frequency of } 180 \text{ Hz?}$ 1 114 Recommended Questions $75 \text{ cm}$, $60 \text{ cm}$... 2 Edit Delete
15987 $\text{A string of length } l \text{ is fixed at one end and free at the other. If it resonates in different modes, then the ratio of frequencies is:}$ $1.\ 1 : 2 : 3 : \ldots$ $2.\ 1 : 3 : 5 : 7 : \ldots$ $3.\ 1 : 2 : 4 : 8 : \ldots$ $4.\ 1 : 3 : 9 : \ldots$ 1 114 Recommended Questions $1 : 2 : 3 : \ldots$, $1 : 3 : 5 : 7 : \ldots$... 2 Edit Delete
15986 $\text{A string is cut into three parts, having fundamental frequencies } n_1, n_2, \text{ and } n_3 \text{ respectively. The original fundamental frequency } n \text{ is related by the expression:}$ $\frac{1}{n} = \frac{1}{n_1} + \frac{1}{n_2} + \frac{1}{n_3}$ 1 114 Recommended Questions $\frac{1}{n} = \frac{1}{n_1} + \frac{1}{n_2} + \frac{1}{n_3}$, $n = n_1 \times n_2 \times n_3$... 1 Edit Delete
15985 $\text{A standing wave is represented by } y = A \sin(100t) \cos(0.01x) \text{ where } y \text{ and } A \text{ are in millimetres, } t \text{ is in seconds and } x \text{ is in metres. The velocity of the wave is:}$ 1 114 Recommended Questions $10^4 \text{ m/s}$, $1 \text{ m/s}$... 1 Edit Delete
15984 $\text{The equation of vibration of a taut string, fixed at both ends, is given by:}$ $y = (3 \ \text{mm}) \cos\left(\frac{\pi x}{10 \ \text{cm}}\right) \sin(800\pi \ \text{s}^{-1} \ t)$ $\text{The speed of waves on the string is:}$ 1 114 Recommended Questions $20 \ \text{m/s}$, $40 \ \text{m/s}$... 3 Edit Delete
15983 $\text{The equation of a stationary wave is given as } y = A \sin(0.5\pi t) \cos(0.2\pi x) \text{ where } t \text{ is in seconds and } x \text{ in centimetres. Which of the following is correct?}$ 1 114 Recommended Questions $\text{Wavelength of the component waves is } 10 \text{ cm.}$, $\text{The separation between a node and the nearest antinode is } 2.5 \text{ cm.}$... 4 Edit Delete
15982 $\text{Two waves represented by the following equations are travelling in the same medium } y_1 = 5 \sin 2\pi (75t - 0.25x), y_2 = 10 \sin 2\pi (150t - 0.50x).$ $\text{The intensity ratio } \frac{I_1}{I_2} \text{ of the two waves will be:}$ 1 114 Recommended Questions $1 : 2$, $1 : 4$... 4 Edit Delete
15981 $\text{The rate of energy transfer in a wave depends:}$ 1 114 Recommended Questions $\text{directly on the square of the wave amplitude and square of the wave frequency.}$, $\text{directly on the square of the wave amplitude and square root of the wave frequency.}$... 1 Edit Delete
15980 $\text{A point source emits sound equally in all directions in a non-absorbing medium. Two points, } P \text{ and } Q, \text{ are at distances of } 2 \text{ m and } 3 \text{ m, respectively, from the source. The ratio of the intensities of the waves at } P \text{ and } Q \text{ is:}$ $1.\ 3 : 2$ $2.\ 2 : 3$ $3.\ 9 : 4$ $4.\ 4 : 9$ 1 114 Recommended Questions $3 : 2$, $2 : 3$... 3 Edit Delete
15979 $\text{Given below are two statements:}$ $\text{Statement I: Sound waves travelling from air into water, incident obliquely, bend towards the normal.}$ $\text{Statement II: Sound waves travel more slowly in water than in air.}$ 1 114 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 3 Edit Delete
15978 $4.0 \text{ gm of gas occupies } 22.4 \text{ litres at NTP. The specific heat capacity of the gas at a constant volume is } 5.0 \text{ JK}^{-1}\text{mol}^{-1}. \text{ If the speed of sound in the gas at NTP is } 952 \text{ ms}^{-1}, \text{ then the molar heat capacity at constant pressure will be: } (R = 8.31 \text{ JK}^{-1}\text{mol}^{-1})$ 1 114 Recommended Questions $8.0 \text{ JK}^{-1}\text{mol}^{-1}$, $7.5 \text{ JK}^{-1}\text{mol}^{-1}$... 1 Edit Delete
15977 $\text{The speed of sound in nitrogen gas compared to that in helium gas at } 300 \text{ K is:}$ 1 114 Recommended Questions $\sqrt{\frac{2}{7}}$, $\sqrt{\frac{1}{7}}$... 3 Edit Delete
15976 $\text{Given below are two statements:}$ $\text{Assertion (A): The change in air pressure affects the speed of sound.}$ $\text{Reason (R): The speed of sound in gases is proportional to the square of pressure.}$ 1 114 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
15975 $\text{When height increases, the velocity of sound decreases:}$ 1 114 Recommended Questions $\text{due to the decrease in pressure.}$, $\text{due to a decrease in temperature.}$... 2 Edit Delete
15974 $\text{The velocity of sound in air is:}$ 1 114 Recommended Questions $\text{faster in dry air than in moist air.}$, $\text{directly proportional to the pressure.}$... 4 Edit Delete
15973 $\text{The speed of sound at a constant temperature depends on:}$ 1 114 Recommended Questions $\text{Pressure}$, $\text{Density of gas}$... 4 Edit Delete
15972 $\text{A bat emits an ultrasonic sound of frequency } 1000 \text{ kHz in the air. If the sound meets a water surface, what is the wavelength of the reflected sound? (The speed of sound in air is } 340 \text{ m/sec and in water is } 1486 \text{ m/sec)}$ 1 114 Recommended Questions $3.4 \times 10^{-4} \text{ m}$, $1.49 \times 10^{-3} \text{ m}$... 1 Edit Delete
15971 $\text{A person standing between two parallel hills fires a gun and hears the first echo after } t_1 \text{ sec and the second echo after } t_2 \text{ sec. The distance between the two hills is: [Given: Speed of sound } = v]$ 1 114 Recommended Questions $\frac{v(t_1 - t_2)}{2}$, $\frac{v(t_1 t_2)}{2(t_1 + t_2)}$... 4 Edit Delete
15970 $\text{If the absolute temperature increases by } 1\%, \text{ the frequency of an organ pipe will:}$ 1 114 Recommended Questions $\text{increase by } 1\%$, $\text{decrease by } 1\%$... 3 Edit Delete
15969 $\text{A sound wave is passed through a chamber. If the rms speed of molecules in a gas is } v_1 \text{ and the speed of sound is } v_2 \text{ in the gas, then:}$ $1.\ v_1 = v_2$ $2.\ v_1 > v_2$ $3.\ v_1 < v_2$ $4.\ v_1 \leq v_2$ 1 114 Recommended Questions $v_1 = v_2$, $v_1 > v_2$... 2 Edit Delete
15968 $\text{Given below are two statements:}$ $\text{Statement I: The speed of sound waves in a medium depends on the elastic modulus and the density of the medium.}$ $\text{Statement II: The speed of sound in a gas is independent of its temperature.}$ 1 114 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... 4 Edit Delete
15967 $\text{Sound waves travel at } 350 \text{ m/s through warm air and at } 3500 \text{ m/s through brass.}$ $\text{The wavelength of a } 700 \text{ Hz acoustic wave as it enters brass from warm air:}$ 1 114 Recommended Questions $\text{increase by a factor of 20.}$, $\text{increase by a factor of 10.}$... 2 Edit Delete
15966 $\text{The speed of sound in a medium is } v. \text{ If the density of the medium is doubled at constant pressure, what will be the new speed of sound?}$ 1 114 Recommended Questions $\sqrt{2}v$, $v$... 3 Edit Delete
15965 $\text{A transverse wave moves from a medium } A \text{ to a medium } B. \text{ In medium } A, \text{ the velocity of the transverse wave is } 500 \text{ ms}^{-1} \text{ and the wavelength is } 5 \text{ m.}$ $\text{The frequency and the wavelength of the wave in medium } B \text{ when its velocity is } 600 \text{ ms}^{-1}, \text{ respectively are:}$ 1 114 Recommended Questions $120 \text{ Hz and } 5 \text{ m}$, $100 \text{ Hz and } 5 \text{ m}$... 4 Edit Delete
15964 35 1 114 Recommended Questions 1, 2... 2 Edit Delete
15963 34 1 114 Recommended Questions 1, 2... 4 Edit Delete
15962 33 1 114 Recommended Questions 1, 2... 1 Edit Delete
15961 32 1 114 Recommended Questions 1, 2... 1 Edit Delete
15960 31 1 114 Recommended Questions 1, 2... 3 Edit Delete
15959 $\text{A steel wire has a length of } 12.0 \text{ m and a mass of } 2.10 \text{ kg. What should be the tension in the wire so that the speed of a transverse wave on the wire equals the speed of sound in dry air, at } 20^\circ\text{C (which is } 343 \text{ m/s)?}$ 1 114 Recommended Questions $4.3 \times 10^3 \text{ N}$, $3.2 \times 10^4 \text{ N}$... 3 Edit Delete
15958 $y = (0.02 \text{ m}) \sin \left[ 2\pi \left( \frac{t}{0.04 \text{ (s)}} - \frac{x}{0.50 \text{ (m)}} \right) \right]$. $\text{The tension in the string will be:}$ 1 114 Recommended Questions $4.0 \text{ N}$, $12.5 \text{ N}$... 4 Edit Delete
15957 $\text{The percentage increase in the speed of transverse waves produced in a stretched string if the tension is increased by } 4\%, \text{ will be:}$ $1. \ 1\%$ $2. \ 2\%$ $3. \ 3\%$ $4. \ 4\%$ 1 114 Recommended Questions $1\%$, $2\%$... 2 Edit Delete
15956 $\text{Which one of the following graphs represents correctly the given wave equation at the origin?}$ $y = 2\sqrt{3} \sin \left( 2\pi x - 3\pi t + \frac{\pi}{3} \right)$ 1 114 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... 1 Edit Delete
15955 $y-x$ \text{ graph of a travelling wave along } +x \text{ direction is shown at any instant } t. \text{ (Symbols have their usual meanings). The velocity of a particle at:}$ 1 114 Recommended Questions $x_1 \text{ is downward}$, $x_2 \text{ is downward}$... 2 Edit Delete
15954 $\text{The phase difference between two waves, represented by}$ $y_1 = 10^{-6} \sin \left\{ 100t + \left( \frac{x}{50} \right) + 0.5 \right\} \text{ m}$ $y_2 = 10^{-6} \cos \left\{ 100t + \left( \frac{x}{50} \right) \right\} \text{ m}$ $\text{where } x \text{ is expressed in metres and } t \text{ is expressed in seconds, is approximate:}$ 1 114 Recommended Questions $2.07 \text{ radians}$, $0.5 \text{ radians}$... 4 Edit Delete
15953 $\text{A triangular transverse wave is propagating in the positive } x\text{-direction. The velocity of } P \text{ at this instant will be:}$ 1 114 Recommended Questions $\text{vertically upward.}$, $\text{vertically downward.}$... 1 Edit Delete
15952 $\text{Two waves are represented by the equations } y_1 = a \sin(\omega t + kx + 0.57) \text{ m}$ $\text{and } y_2 = a \cos(\omega t + kx) \text{ m, where } x \text{ is in meters and } t \text{ in seconds. The phase difference between them is:}$ 1 114 Recommended Questions $1.25 \text{ rad}$, $1.57 \text{ rad}$... 4 Edit Delete
15951 $\text{For the travelling harmonic wave,}$ $y(x, t) = 2.0 \cos 2\pi (10t - 0.0080x + 0.35)$ $\text{where } x \text{ and } y \text{ are in cm and } t \text{ is in seconds.}$ $\text{The phase difference between the oscillatory motion of two}$ $\text{points separated by a distance of } 4 \text{ m will be:}$ 1 114 Recommended Questions $0.8\pi \text{ rad}$, $\pi \text{ rad}$... 3 Edit Delete
15950 $\text{A transverse harmonic wave on a string is described by,}$ $y(x, t) = 3.0 \sin\left(36t + 0.018x + \frac{\pi}{4}\right)$ $\text{where } x \text{ and } y \text{ are in cm and } t \text{ in sec.}$ $\text{The positive direction of } x \text{ is from left to right.}$ $\text{What is the shortest distance between two successive crests in the wave?}$ 1 114 Recommended Questions $1.3 \text{ m}$, $3.0 \text{ m}$... 4 Edit Delete
15949 $\text{The equation of a travelling wave is given as } y = A \sin(40\pi t - 0.2\pi x),$ $\text{where } t \text{ is in seconds and } x \text{ in metres.}$ $\text{The minimum distance between two particles oscillating in the same phase is:}$ 1 114 Recommended Questions $10 \text{ m}$, $5 \text{ m}$... 1 Edit Delete
15948 $\text{A wave in a string has an amplitude of } 2 \text{ cm. The wave travels in the positive direction of the } x\text{-axis with a speed of } 128 \text{ m/s and it is noted that } 5 \text{ complete waves fit in the } 4 \text{ m length of the string. The equation describing the wave is:}$ 1 114 Recommended Questions $y = (0.02 \text{ m}) \sin(7.85x + 1005t)$, $y = (0.02 \text{ m}) \sin(15.7x - 2010t)$... 4 Edit Delete
15947 $\text{The mathematical forms for three sinusoidal traveling waves are given by:}$ $\text{Wave 1: } y(x, t) = (2 \text{ cm}) \sin(3x - 6t)$ $\text{Wave 2: } y(x, t) = (3 \text{ cm}) \sin(4x - 12t)$ $\text{Wave 3: } y(x, t) = (4 \text{ cm}) \sin(5x - 11t)$ $\text{where } x \text{ is in meters and } t \text{ is in seconds. Of these waves:}$ 1 114 Recommended Questions $\text{Wave 1 has the highest wave speed as well as the maximum transverse string speed.}$, $\text{Wave 2 has the highest wave speed, while Wave 1 has the maximum transverse string speed.}$... 4 Edit Delete
15946 $\text{Two SHMs have equations:}$ $x_1 = a \sin(\omega t + \phi_1)$ $\text{and}$ $x_2 = a \sin(\omega t + \phi_2).$ $\text{If the amplitude of the resultant SHM is equal to amplitude of superimposing SHM(s), the phase difference between them is:}$ 1 114 Recommended Questions $\frac{\pi}{6}$, $\frac{2\pi}{3}$... 2 Edit Delete
15945 $\text{Two progressive waves are represented by, } y_1 = 5 \sin(200t - 3.14x) \text{ and } y_2 = 10 \sin\left(200t - 3.14x + \frac{\pi}{3}\right) \text{ (} x \text{ is in metres, and } t \text{ is in seconds). Path difference between the two waves is:}$ 1 114 Recommended Questions $\frac{100}{\pi} \text{ m}$, $\frac{1}{3} \text{ m}$... 2 Edit Delete
15944 $\text{The wave equations of two particles are given by}$ $y_1 = a \sin(\omega t - kx), \; y_2 = a \sin(kx + \omega t), \; \text{then:}$ 1 114 Recommended Questions $\text{they are moving in the opposite direction.}$, $\text{the phase between them is } 90^\circ.$... 1 Edit Delete
15943 $\text{A transverse wave propagating along the } x\text{-axis is represented by:}$ $y(x, t) = 8.0 \sin\left(0.5\pi x - 4\pi t - \frac{\pi}{4}\right), \text{ where } x \text{ is in meters and } t \text{ in seconds. The speed of the wave is:}$ 1 114 Recommended Questions $4\pi \text{ m/s}$, $0.5 \text{ m/s}$... 4 Edit Delete
15942 $\text{A transverse wave is represented by } y = 2 \sin(\omega t - kx) \text{ cm.}$ $\text{The value of wavelength (in cm) for which the wave velocity becomes equal to the maximum particle velocity, will be:}$ 1 114 Recommended Questions $4\pi$, $2\pi$... 1 Edit Delete
15941 $\text{Three progressive waves } A, B \text{ and } C \text{ are shown below. With respect to wave } A:$ 1 114 Recommended Questions $\text{Wave } C \text{ lags behind in phase by } \pi/2 \text{ and wave } B \text{ leads by } \pi/2.$, $\text{Wave } C \text{ leads in phase by } \pi \text{ and wave } B \text{ lags behind by } \pi.$... 1 Edit Delete
15940 $\text{Given the equation for a wave on the string, } y = 0.5 \sin(5x - 3t) \text{ where } y \text{ and } x \text{ are in metres and } t \text{ in seconds, the ratio of the maximum speed of particle to the speed of wave is:}$ 1 114 Recommended Questions $1 : 1$, $5 : 2$... 2 Edit Delete
15939 $\text{The wave described by } y = 0.25 \sin(10\pi x - 2\pi t), \text{ where } x \text{ and } y \text{ are in metres and } t \text{ in seconds, is a wave traveling along the:}$ 1 114 Recommended Questions $-\ve x \text{ direction with frequency 1 Hz.}$, $+\ve x \text{ direction with frequency } \pi \text{ Hz and wavelength } \lambda = 0.2 \text{ m.}$... 3 Edit Delete
15938 $\text{If a wave is travelling in a positive } x\text{-direction with } A = 0.2 \text{ m,}$ $v = 360 \text{ m/s, and } \lambda = 60 \text{ m, then the correct expression for the wave will be:}$ 1 114 Recommended Questions $y = 0.2 \sin \left[ 2\pi \left( 6t + \frac{x}{60} \right) \right]$, $y = 0.2 \sin \left[ \pi \left( 6t + \frac{x}{60} \right) \right]$... 3 Edit Delete
15937 $\text{A wave traveling in the } +ve \ x\text{-direction having maximum displacement along } y\text{-direction as } 1 \ \text{m, wavelength } 2\pi \ \text{m and frequency of } \frac{1}{\pi} \ \text{Hz, is represented by:}$ 1 114 Recommended Questions $y = \sin(2\pi x - 2\pi t)$, $y = \sin(10\pi x - 20\pi t)$... 4 Edit Delete
15936 $\text{The equation of a progressive wave is given by } y = 4 \sin \left\{ \pi \left( \frac{t}{5} - \frac{x}{9} \right) + \frac{\pi}{6} \right\}$ $\text{, where } x \text{ and } y \text{ are in metres and } t \text{ in seconds.}$ $\text{Which of the following is correct?}$ 1 114 Recommended Questions $v = 5 \text{ m/s}$, $\lambda = 18 \text{ m}$... 2 Edit Delete
15935 $\text{If a travelling wave pulse is given by } y = \frac{20}{4+(x+4t)^2} \text{ m, then:}$ 1 114 Recommended Questions $\text{the pulse is traveling along the negative } x\text{-axis.}$, $\text{the speed of the pulse is } 4 \text{ m/s.}$... 4 Edit Delete
15934 $\text{The equation } y(x, t) = 0.005 \cos(\alpha x - \beta t) \text{ describes a wave traveling along the } x\text{-axis. If the wavelength and the time period of the wave are } 0.08 \text{ m and } 2.0 \text{ s, respectively, then } \alpha \text{ and } \beta \text{ in appropriate units are:}$ $1. \ \alpha = 25.00\pi, \ \beta = \pi$ $2. \ \alpha = \frac{0.08}{\pi}, \ \beta = \frac{2.0}{\pi}$ $3. \ \alpha = \frac{\pi}{0.04}, \ \beta = \frac{\pi}{1.0}$ $4. \ \alpha = 12.50\pi, \ \beta = \frac{\pi}{2.0}$ 1 114 Recommended Questions $\alpha = 25.00\pi, \ \beta = \pi$, $\alpha = \frac{0.08}{\pi}, \ \beta = \frac{2.0}{\pi}$... 1 Edit Delete
15933 $\text{A tuning fork makes } 256 \text{ vibrations per second in air. When the velocity of sound is } 330 \text{ m/s, then the wavelength of the tone emitted is:}$ 1 114 Recommended Questions $0.56 \text{ m}$, $0.89 \text{ m}$... 4 Edit Delete
15932 $\text{The displacement of a particle is given by } y = 5 \times 10^{-4} \sin(100t - 50x),$ $\text{where } x \text{ is in metres and } t \text{ is in seconds. The velocity of the wave is:}$ 1 114 Recommended Questions $5000 \text{ m/s}$, $2 \text{ m/s}$... 2 Edit Delete
15931 $\text{Given below are two statements:}$ $\text{Assertion (A): Ocean waves hitting a beach are always found to be nearly normal to the shore.}$ $\text{Reason (R): Ocean waves are longitudinal waves.}$ 1 114 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
15930 $\text{Which one of the following statements is true?}$ 1 114 Recommended Questions $\text{Both light and sound waves in the air are transverse.}$, $\text{The sound waves in the air are longitudinal while the light waves are transverse.}$... 2 Edit Delete
15929 Biochemical similarities performing a given function among diverse organisms give clues for 6 613 Recommended Questions Common ancestry, Diverse ancestry... 1 Edit Delete
15928 Genetic drift is change of 6 613 Recommended Questions gene frequency in same generation, appearance of recessive genes... 3 Edit Delete
15927 'Founder effect' is related to - 6 613 Recommended Questions Gene recombination and Natural selection, Genetic drift and origin of new species... 2 Edit Delete
15926 Oparin of...... and Haldane of..... proposed that the first form of life could have come from pre existing........... 6 613 Recommended Questions Russia, England, non-living inorganic molecules, England, Russia, living organic matter... 3 Edit Delete
15925 The mechanism of non cellular aggregates of giant macromolecules to cell with membranous envelop is 6 613 Recommended Questions Natural selection, Not known... 2 Edit Delete
15924 The first form of life were not 6 613 Recommended Questions Single cells, in water environment only... 3 Edit Delete
15923 In present times, the origin of life is not possible from inorganic compounds due to: 1. Non-availability of raw material 2. High concentration of O₂ in the atmosphere 3. Decrease in temperature 4. Excess of pollution 6 613 Recommended Questions Non-availability of raw material, High concentration of O₂ in the atmosphere... 2 Edit Delete
15922 Which of the following is true regarding early earth? 6 613 Recommended Questions Earth was supposed to have been formed about 4.5 billion years back., The atmosphere of early earth was full of water vapour.... 1 Edit Delete
15921 Evolution by 'a' in a true sense would have started when cellular forms of life with differences in metabolic capability originated on earth. Here 'a' is 6 613 Recommended Questions Mutation, Natural selection... 2 Edit Delete
15920 For the stability of the organic compounds, Oparin opined that probably: 6 613 Recommended Questions UV radiation never reached the surface of the primeval Earth, the primitive Earth was in a molten state... 3 Edit Delete
15919 Which was absent in the atmosphere at the time of origin of life? 6 613 Recommended Questions NH₃, H₂... 3 Edit Delete
15918 Hardy-Weinberg equilibrium can be disrupted by presence of all except 6 613 Recommended Questions Genetic drift, Random mating... 2 Edit Delete
15917 Which one of the following would cause the Hardy-Weinberg principle to be inaccurate? 6 613 Recommended Questions The size of the population is very large., Individuals mate with one another at random.... 3 Edit Delete
15916 Which of the following would lead to deviation from Hardy-Weinberg equilibrium? 6 613 Recommended Questions Random mating, Lack of mutations... 4 Edit Delete
15915 What will be the frequency of homozygote dominant in a population of triploid organisms. 6 613 Recommended Questions p×p×p, AA... 1 Edit Delete
15914 Hardy-Weinberg equation is used to check 6 613 Recommended Questions Size of population, Whether evolution is occurring in a population or not... 2 Edit Delete
15913 According to Hardy-Weinberg principle, the frequency of homozygous recessive (aa) individuals in a population is denoted by 6 613 Recommended Questions p², 2pq... 3 Edit Delete
15912 In a population, homozygous and heterozygous individuals are in a certain proportion. This proportion can't be changed by 6 613 Recommended Questions Natural Selection, Mutation... 4 Edit Delete
15911 If frequency of 'A' allele is 0.4 than, find out the frequency of 'B' allele and heterozygous genotype in a random mating population at equilibria. 6 613 Recommended Questions 0.6 an 0.24, 0.6 and 0.96... 3 Edit Delete
15910 In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by 6 613 Recommended Questions p², 2pq... 2 Edit Delete
15909 Identify the correct statement: 6 613 Recommended Questions Dryopithecus was more man like than Ramapithecus, Homo Habilis probably did not eat meat... 2 Edit Delete
15908 The extinct human who lives 100000 to 40000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was 6 613 Recommended Questions Homo habilis, Neanderthal human... 2 Edit Delete
15907 Which of the following feature is not of Ramapithecus? 6 613 Recommended Questions Hairy, walked like gorillas and chimpanzees, Existed 15mya... 4 Edit Delete
15906 Identify the incorrectly matched pair: 6 613 Recommended Questions Ramapithecus - More man like ape like, Homo habilis - First human like being, the hominid... 3 Edit Delete
15905 Which of the following is incorrect with respect to different hominids, their cranial capacities and characteristics? 6 613 Recommended Questions Homo habilis: 650-800 cc, Herbivorous, tool-maker, Homo erectus: 900 cc, Discovered fire, ate meat... 4 Edit Delete
15904 Which of the following does not hold true for Australopithecus? 6 613 Recommended Questions Existed 2 mya, Probably lived in East African grasslands... 4 Edit Delete
15903 Among the human ancestors the brain size was more than 1000 cc in: 6 613 Recommended Questions Homo neanderthalensis, Homo erectus... 1 Edit Delete
15902 Proper burial of dead bodies for the first time started in which pre-historic man's period? 6 613 Recommended Questions Peking man, Java man... 3 Edit Delete
15901 Which among the following had the largest cranial capacity? 6 613 Recommended Questions Java man, Taung child... 3 Edit Delete
15900 Adaptive radiation refers to 6 613 Recommended Questions adaptations due to geographical isolation, evolution of different species from a common ancestor... 2 Edit Delete
15899 The presence of the monotremes and marsupials in the Australian continent can be explained by: 6 613 Recommended Questions Convergent evolution, Adaptive radiation... 2 Edit Delete
15898 The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge is called: 6 613 Recommended Questions Convergent evolution, Non-random evolution... 1 Edit Delete
15897 An important evidence in favour of organic evolution is the occurrence of: 6 613 Recommended Questions homologous and vestigial organs, analogous and vestigial organs... 1 Edit Delete
15896 Distantly related organisms with similar traits have experienced: 6 613 Recommended Questions Coevolution, Convergent evolution... 2 Edit Delete
15895 Evolutionary convergence is the development of 6 613 Recommended Questions common set of characters in the group of different ancestry, dissimilar characters in closely related groups... 1 Edit Delete
15894 Which of the following is not an example of analogous structure? 6 613 Recommended Questions Eye of Octopus and mammal, Flippers of penguins and dolphin... 4 Edit Delete
15893 Choose the incorrect match 6 613 Recommended Questions Flippers of penguins and dolphins - Convergent evolution, Marsupials of Australia - Adaptive radiation... 4 Edit Delete
15892 Among the following sets of examples for divergent evolution, select the incorrect option. 6 613 Recommended Questions Brain of bat, man and cheetah, Heart of bat, man and cheetah... 4 Edit Delete
15891 Biologists discover about 1000 species in an Island which is descended from a single ancestor species. What is the reason behind the such large speciation? 6 613 Recommended Questions Mutation, Adaptive radiation... 2 Edit Delete
15890 The homologous organs are those that show similarity in 6 613 Recommended Questions size, origin... 2 Edit Delete
15889 Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements. Statements: (A) Wings of butterflies and birds look alike and are the results of _(i)_ evolution (B) Miller showed that CH₄, H₂, NH₃, and _(i)_, when exposed to electric discharge in a flask resulted in the formation of _(ii)_. (C) Vermiform appendix is a _(i)_ organ and an _(ii)_ evidence of evolution. (D) According to Darwin evolution took place due to _(i)_ and _(ii)_ of the fittest. 6 613 Recommended Questions (A) - (i) convergent, (B) - (i) oxygen, (ii) nucleosides, (B) - (i) water vapour, (ii) amino acids, (C) - (i) rudimentary (ii) anatomical... 4 Edit Delete
15888 When two species of different geneology come to resemble each other as a result of adaptation, the phenomenon is termed 6 613 Recommended Questions divergent evolution, micro-evolution... 4 Edit Delete
15887 Which one of the following options gives one correct example each of convergent evolution and divergent evolution? 6 613 Recommended Questions Eyes of Octopus and mammals, Bones of forelimbs of vertebrates, Thorns of Bougainvillea and tendrils of Cucurbita, Wings of butterflies and birds... 1 Edit Delete
15886 Adaptive radiation can be observed in all cases except 6 613 Recommended Questions marsupial radiation, Variety of beaks in Darwin's finches... 4 Edit Delete
15885 The finches of Galapagos islands provide an evidence in favour of 6 613 Recommended Questions special creation, evolution due to mutation... 4 Edit Delete
15884 Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of: 6 613 Recommended Questions Analogous organs, Adaptive radiation... 3 Edit Delete
15883 Which of the following is not a result of convergent evolution? 6 613 Recommended Questions Potato and sweet potato, Flippers of penguins and dolphins... 4 Edit Delete
15882 The eye of the octopus and the eye of the cat show different patterns of structure, yet they perform a similar function. This is an example of: 6 613 Recommended Questions Homologous organs that have evolved due to divergent evolution., Analogous organs that have evolved due to convergent evolution.... 2 Edit Delete
15881 Structures given in the figure below represent the example of 6 613 Recommended Questions Adaptive convergence, Convergent evolution... 4 Edit Delete
15880 Which of the following is an example of homologous organs? 6 613 Recommended Questions Wings of butterfly and of birds, Eye of the Octopus and of mammals... 4 Edit Delete
15879 The evolutionary process giving rise to new species adapted to new habitats and ways of life is called adaptive radiation. For example, 1. Darwin's finches in Galapagos Islands. 2. Australian marsupials that radiated to form new species. 3. Wolf and Tasmanian wolf. 4. Both (a) and (b) 6 613 Recommended Questions Darwin's finches in Galapagos Islands., Australian marsupials that radiated to form new species.... 4 Edit Delete
15878 In human evolution, the development of the brain and language is an example of: 6 613 Recommended Questions Convergent evolution, Divergent evolution... 3 Edit Delete
15877 Which of the following statements is correct about the origin and evolution of men? 6 613 Recommended Questions Agriculture came around 50,000 years back., The Dryopithecus and Ramapithecus primates existing 15 million years ago, walked like men.... 4 Edit Delete
15876 Agriculture and human settlement started about 6 613 Recommended Questions 75000 years ago, 18000 years ago... 3 Edit Delete
15875 The primate which arose during ice age between 75,000 to 10,000 years ago is 6 613 Recommended Questions Dryopithecus, Ramapithecus... 3 Edit Delete
15874 In the following figures, there are three skulls. Which statement is correct about these skulls? 6 613 Recommended Questions A – Skull of a baby chimpanzee B – Skull of a man C – Skull of adult human, A – Skull of an adult chimpanzee B – Skull of a baby chimpanzee C – Skull of adult human... 3 Edit Delete
15873 Match column I and column II with respect to cranial capacity Column I a. Homo erectus b. Homo sapiens c. Cro-Magnon man d. Homo habilis Column II i. 650 - 800 cc ii. 1650 cc iii. 1400 cc iv. 900 cc Choose the correct option 6 613 Recommended Questions a(i), b(ii), c(iii), d(iv), a(ii), b(iii), c(iv), d(i)... 3 Edit Delete
15872 What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors? 6 613 Recommended Questions Shortening of jaws, Binocular vision... 3 Edit Delete
15871 The correct sequence of stages in the evolution of modern man (Homo sapiens), is 6 613 Recommended Questions Homo erectus, Australopithecus, neanderthal man, cro-magnon man, modern man, Australopithecus, Homo erectus, neanderthal man, cro-magnon man, modern man... 2 Edit Delete
15870 The first human – like being or hominid was: 6 613 Recommended Questions Dryopithecus, Australopithecus... 3 Edit Delete
15869 Who made huts, used skin of animals and barks of trees as clothes and started burial ceremony for the first time? 6 613 Recommended Questions Homohabilis, Java man... 3 Edit Delete
15868 Which of the following primate existed about 15 mya and had a hairy body and walked like Gorillas and chimpanzees? 6 613 Recommended Questions Ramapithecus, Australopithecus... 1 Edit Delete
15867 The chronological order of human evolution from early to the recent is 6 613 Recommended Questions Australopithecus → Ramapithecus → Homo habilis → Homo erectus, Ramapithecus → Australopithecus → Homo habilis → Homo erectus... 2 Edit Delete
15866 The man like primates walked in eastern Africa around 3-4 mya. This belief was supported by 6 613 Recommended Questions Hominid features of bones discovered in Ethiopia and Tanzania., Hominid features of bones discovered in Whole Africa... 1 Edit Delete
15865 Consider the following statements: I: The first organisms that invaded land were the plants. II: Lobefins evolved into the first amphibians. III: Ramapithecus was more ape-like and Dryopithecus was more man-like. Which of the above statements are true? 6 613 Recommended Questions I and II only, I and III only... 1 Edit Delete
15864 Choose the incorrect match 6 613 Recommended Questions First noncellular form of life – 3 bya, First cellular form of life – 2 bya... 4 Edit Delete
15863 According to fossils that have been discovered till now, the origin and evolution of man started from which country? 6 613 Recommended Questions France, Java... 3 Edit Delete
15862 The selecting agent in industrial melanism was: 6 613 Recommended Questions humans, toxins from smoke... 3 Edit Delete
15861 Which of the following conclusions is from industrial melanism? 6 613 Recommended Questions Camouflage causes the white moths to get caught by predators more even in rural areas during industrialisation., During industrialisation, white variant of moths got wiped out completely in urban areas.... 4 Edit Delete
15860 Industrial melanism is a phenomenon that is best demonstrated as 6 613 Recommended Questions Directional selection, Pollution generated mutation... 1 Edit Delete
15859 The occurrence of endemic species in South America and Australia is due to 6 613 Recommended Questions Extinction of these species from other regions, Continental separation... 2 Edit Delete
15858 Evolution of DDT resistant mosquito is best explained by which category of natural selection? 6 613 Recommended Questions Peak gets higher and narrower, Peak shifts in one direction... 2 Edit Delete
15857 There are five factors known to affect Hardy-Weinberg equilibrium, which of the following cannot be included in the five factors? 6 613 Recommended Questions Gene flow and genetic drift, Genetic recombination and natural selection... 4 Edit Delete
15856 Match column I and column II and choose the correct option. Column-I a. Natural selection b. Thomas Malthus c. Gene flow d. Hardy-Weinberg law Column-II (i) p² + 2pq + q² = 1 (ii) Migrations change allele frequency (iii) Essay on population (iv) Reproductive fitness 6 613 Recommended Questions a(iv), b(iii), c(ii), d(i), a(i), b(ii), c(iii), d(iv)... 1 Edit Delete
15855 Change of frequencies of alleles in a population or any deviation from Hardy-Weinberg equilibrium is interpreted as: 6 613 Recommended Questions Organic evolution, Genetic drift... 2 Edit Delete
15854 The factor that leads to Founder effect in a population is: 6 613 Recommended Questions Mutation, Genetic drift... 2 Edit Delete
15853 What is genetic equilibrium? 6 613 Recommended Questions When all the alleles of a gene are present in a population in equal frequencies, When the number of heterozygotes in a population are equal to the number of either of the homozygote... 4 Edit Delete
15852 Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as: 6 613 Recommended Questions Genetic drift, Random mating... 1 Edit Delete
15851 Industrial melanism cannot be explained by 6 613 Recommended Questions A, C, D and E, A and D only... 3 Edit Delete
15850 Karn & Penrose showed that birth weight follows a normal distribution, that mortality for newborns is greater for those either under- or over-weight, and that the mean birth weight (7 lbs) coincides with that showing minimum mortality. The type of natural selection operating here is shown by the graph: 6 613 Recommended Questions (a), (b)... 1 Edit Delete
15849 In a species, the weight of a newborn ranges from 2 to 5 kg. 97% of the newborns with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 kg to 5 kg die. Which type of selection process is taking place? 6 613 Recommended Questions Cyclical selection, Directional selection... 3 Edit Delete
15848 ............... operates to eliminate intermediate phenotypes. 6 613 Recommended Questions Directional selection, Disruptive selection... 2 Edit Delete
15847 Industrial melanism is an example of: 6 613 Recommended Questions Drug resistance, Darkening of the skin due to smoke from industries... 3 Edit Delete
15846 Directional selection favours: 6 613 Recommended Questions Both extremes of a trait, Intermediate form of a trait... 4 Edit Delete
15845 Natural selection is best defined as occurring when the environment causes: 6 613 Recommended Questions differential success in reproduction, differential mortality... 1 Edit Delete
15844 A location with luxuriant growth of lichens on the trees indicates that the: 6 613 Recommended Questions trees are very healthy, trees are heavily infested... 4 Edit Delete
15843 Which one of the following populations would most quickly lead to two groups with few shared traits? 6 613 Recommended Questions a population with disruptive selection, a population with directional selection... 1 Edit Delete
15842 If more individuals acquire peripheral character value at both the ends of the distribution curve; in such case natural selection has resulted in 6 613 Recommended Questions Stabilization, Directional... 3 Edit Delete
15841 A type of natural selection in which more individuals acquire peripheral character value at both ends of distribution curve is 6 613 Recommended Questions Directional selection, Disruptive selection... 2 Edit Delete
15840 In the case of peppered moth (Biston betularia), the black-coloured form became dominant over the light-coloured form in England during the industrial revolution. This is an example of: 6 613 Recommended Questions natural selection, whereby the darker forms were selected, appearance of the darker coloured individuals due to very poor sunlight... 1 Edit Delete
15839 Those who are better fit in an environment, leave more progeny than others. The evolutionary mechanism that operates for such a change is 6 613 Recommended Questions Natural selection, Genetic drift... 1 Edit Delete
15838 The following statements concerned with genetic drift are incorrect except one. Select the exception 6 613 Recommended Questions Genetic drift maintains Hardy Weinberg equilibrium, Gene frequency in a small population change due to natural selections only... 3 Edit Delete
15837 Which of the following factor will not affect Hardy-Weinberg equilibrium? 6 613 Recommended Questions Natural selection, Genetic drift... 4 Edit Delete
15836 Which of the following is not true for a species: 6 613 Recommended Questions Members of a species can interbreed, Variations occur among members of a species... 3 Edit Delete
15835 Given below is the representative evolutionary history of vertebrates through geological periods. A, B, C, and D, respectively, are: 6 613 Recommended Questions Dinosaurs, Thecodonts, Therapsids, and Pelycosaurs, Dinosaurs, Therapsids, Thecodonts, and Pelycosaurs... 2 Edit Delete
15834 Examples of phenomenon named adaptive radiation is not seen in/amongst 6 613 Recommended Questions Marsupials in Australia, Finches on Galapagos islands... 3 Edit Delete
15833 Evolution is a 6 613 Recommended Questions Stochastic process, Discontinuous process... 1 Edit Delete
15832 In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner? 6 613 Recommended Questions Mutations, Random drift... 2 Edit Delete
15831 Variations caused by mutation, as proposed by Hugo de Vries, are: 6 613 Recommended Questions small and directionless, random and directional... 3 Edit Delete
15830 The idea of mutations was brought forth by: 6 613 Recommended Questions Gregor Mendel, who worked on Pisum sativum, Hardy Weinberg, who worked on allele frequencies in a population... 4 Edit Delete
15829 Single step large mutation leading to speciation is also called 6 613 Recommended Questions Founder's effect, saltation... 2 Edit Delete
15828 Theory of 'Saltations' was given by 6 613 Recommended Questions G Mendel, Hugo de Vries... 2 Edit Delete
15827 Sudden heritable changes are called 6 613 Recommended Questions Linkages, Mutations... 2 Edit Delete
15826 The excess use of herbicides and pesticides etc. has resulted in selection of resistant varieties in a much lesser time. Hence, resistant organisms/cells are appearing in a time span of months or years and not centuries. This statement is: 6 613 Recommended Questions In favour of evolution by anthropogenic action, Against the natural selection theory... 1 Edit Delete
15825 Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution - 6 613 Recommended Questions production of 'Dolly', the sheep by cloning, Development of organs from 'stem' cells for organ transplantation... 4 Edit Delete
15824 Mark the correct statement with respect to industrial melanism: 6 613 Recommended Questions Lichens can be used as an industrial pollution indicator., Low count of melanic moths are found in rural areas where industrialisation did not occur.... 4 Edit Delete
15823 Select the correct statement from the following: 6 613 Recommended Questions Darwin variations are small and directionless, Fitness is the end result of the ability to adapt and gets selected by nature... 2 Edit Delete
15822 The finches of the Galapagos islands provide evidence in favour of: 6 613 Recommended Questions special creation, evolution due to mutation... 4 Edit Delete
15821 In Galapagos island, Darwin found different varieties of finches, originated from a common ancestor. The original variety of these finches was: 6 613 Recommended Questions Insectivorous, Vegetarian... 3 Edit Delete
15820 Consider the following statements: I: Nature selects for fitness. II: Fitness is based on characteristics that are inherited. III: Fitness is the end result of the ability to adapt and get selected by nature. Which of the above statements are true? 6 613 Recommended Questions I and II only, I and III only... 4 Edit Delete
15819 Which one of the following sequences was proposed by Darwin and Wallace for organic evolution? 6 613 Recommended Questions Overproduction, variations, constancy of population size, natural selection, Variations, constancy of population size, overproduction, natural selection... 3 Edit Delete
15818 Mark the incorrect statement? 6 613 Recommended Questions Force of natural selection started with cellular form of life, According to natural selection rate of appearance of new forms is linked to life cycle or the life span... 4 Edit Delete
15817 The rate of appearance of new forms is linked with: 6 613 Recommended Questions Mutation, Life span... 2 Edit Delete
15816 The correct statement about the nature of evolution and natural selection is 6 613 Recommended Questions Evolution is a process while natural selection is the end result of a process which is unknown., Natural selection is a process while evolution is the end result of a process which is unknown.... 4 Edit Delete
15815 The best description of natural selection is 6 613 Recommended Questions the survival of the fittest, the struggle for existence... 3 Edit Delete
15814 Theory of natural selection dwells on 6 613 Recommended Questions role of environment in evolution, natural selection acting on favourable variations... 2 Edit Delete
15813 Darwin believed that certain parts of the body get larger and more complex through the generations because they: 6 613 Recommended Questions are used more extensively than other parts, contribute to greater reproductive success... 2 Edit Delete
15812 Both Charles Darwin and A.R. Wallace were influenced by the: 6 613 Recommended Questions writings of J.B.S. Haldane on the origin of life, findings of Urey and Miller experiments... 4 Edit Delete
15811 In replica-plate experiment some bacteria able to grow in penicillin containing medium due to 6 613 Recommended Questions Natural selection, Reproductive isolation... 1 Edit Delete
15810 Diversification in plant life appeared: 6 613 Recommended Questions Due to abrupt mutations, Suddenly on earth... 4 Edit Delete
15809 Natural selection is the survival of fittest, which of the following most precisely describe the survival of fittest? 6 613 Recommended Questions The physical strength of organism., How many fertile offspring is produced by an organism.... 2 Edit Delete
15808 Who concluded that existing living forms share similarities to varying degrees not only among themselves but also with life forms that existed millions of years ago? 6 613 Recommended Questions Charles Lyell, Charles Darwin... 2 Edit Delete
15807 The two key concepts of Darwinian theory of evolution are 6 613 Recommended Questions Branching descent and natural selection, Saltation and Founder effect... 1 Edit Delete
15806 A population of a species invades a new area. Which of the following condition will lead to Adaptive Radiation? 6 613 Recommended Questions Area with a large number of habitats having very low food supply, Area with a single type of vacant habitat... 3 Edit Delete
15805 In Australia, marsupials and placental mammals have evolved to share many similar characteristics. This type of evolution may be referred to as: 6 613 Recommended Questions Adaptive Radiation, Divergent Evolution... 4 Edit Delete
15804 The "Use and Disuse" principal or "Theory of Inheritance of Acquired Characters" of evolution was proposed by 6 613 Recommended Questions Hugo de Vries, Weismann... 3 Edit Delete
15803 Mark the correct character of the following figure 6 613 Recommended Questions Tetrapedal and having bony plates on back, Tetrapedal and having collar on neck... 3 Edit Delete
15802 Which evidence of evolution related to Darwin's finches: 6 613 Recommended Questions Evidence from biogeographical distribution, Evidence from comparative anatomy... 1 Edit Delete
15801 Which of the following is distantly related among each other? 6 613 Recommended Questions Crocodiles, Snakes... 2 Edit Delete
15800 Which of the following statements is not true if we consider postulates of Darwinian theory of evolution? 6 613 Recommended Questions Evolution by natural selection would have started when cellular forms of life with similarities in metabolic capabilities originated on Earth, The rate of appearance of new forms is linked to the life cycle or the life span.... 1 Edit Delete
15799 The now extinct reptile group that evolved into mammals was: 6 613 Recommended Questions Therapsids, Dinosaurs... 1 Edit Delete
15798 Which of the following is not true? 6 613 Recommended Questions Small sized reptiles of dinosaurs of that era still exist today., Tyrannosaurs rex was about 20 feet in height and had hugesome dagger like teeth.... 4 Edit Delete
15797 Flowering plants, angiosperm appeared in which of the following period? 6 613 Recommended Questions Permian, Triassic... 4 Edit Delete
15796 The flourishing period of progymnosperm is 6 613 Recommended Questions Devonian, Silurian... 1 Edit Delete
15795 Which of the following is from the same lineage as that of Triceratops? 6 613 Recommended Questions Stegosaurus, Tyrannosaurus... 1 Edit Delete
15794 Tyrannosaurs was not present with which of the following Dinosaurs? 6 613 Recommended Questions Triceratops, Archaeopteryx... 4 Edit Delete
15793 Bryophytes evolved from 6 613 Recommended Questions Psilophyton, Rhynia type plants... 4 Edit Delete
15792 Fish with stout and strong fins could move on land and go back to water. This was happened about: 6 613 Recommended Questions 300 million years ago, 320 million years ago... 4 Edit Delete
15791 The flourishing period of seed ferns is 6 613 Recommended Questions Jurassic, Devonian... 3 Edit Delete
15790 Arrange the following in the order of their existence during the history of life forms: a)Stegosaurus, b)Brachiosaurus, c)Triceratops, d)Tyrannosaurus, e)Pteranodon, f)Crocodilian, g)Archaeopteryx. 6 613 Recommended Questions b)-a)-g)-f)-e)-d)-c), e)-b)-g)-a)-f)-c)-d)... 1 Edit Delete
15789 On Galapagos island, Darwin observed variation in beaks of birds (Darwin's finches) and he concluded: 6 613 Recommended Questions Inter species variation, Intraspecies variation... 3 Edit Delete
15788 Zosterophyllum evolved from 6 613 Recommended Questions Psilophyton, Rhynia type plants... 3 Edit Delete
15787 Gnetales evolved from 6 613 Recommended Questions Psilophyton, Rhynia type plants... 1 Edit Delete
15786 Correct order is [1991] 6 613 Recommended Questions Palaeozoic → Archaeozoic → Coenozoic, Archaeozoic → Palaeozoic → Proterozoic... 3 Edit Delete
15785 Sauropsids gave rise to 6 613 Recommended Questions Turtles, Mammals... 1 Edit Delete
15784 Which of the following could evolve by the time of 500 mya? 6 613 Recommended Questions Jawless fishes, Invertebrates... 2 Edit Delete
15783 Which of the following conclusions is of paleontological evidences for evolution? 6 613 Recommended Questions A study of fossils in different sedimentary layers indicates the geological period in which they existed, The new life forms have arisen at same time in the history of Earth... 1 Edit Delete
15782 Similarities in organisms with different genotypes indicate: 6 613 Recommended Questions Microevolution, Macroevolution... 3 Edit Delete
15781 How many years ago dinosaurs suddenly disappeared from the earth? 6 613 Recommended Questions About 200 million years ago, About 65 million years ago... 2 Edit Delete
15780 During course of evolution, the land reptiles which went back into water to evolve into fish-like reptiles, about 200 mya would refer to 6 613 Recommended Questions Ichthyosaurs, Tyrannosaurus... 1 Edit Delete
15779 Most fossils are found in: 6 613 Recommended Questions Granite, Sedimentary rocks... 2 Edit Delete
15778 Embryological support for evolution was proposed by 6 613 Recommended Questions Ernst Heckel, Karl Ernst von Baer... 1 Edit Delete
15777 The embryological support for evolution was disproved by whose keen observations? 6 613 Recommended Questions Karl Ernst Von Baer, Ernst Heckel... 1 Edit Delete
15776 The early-stage human embryo distinctly possesses 6 613 Recommended Questions gills, gill slits... 2 Edit Delete
15775 Which one of the following describes correctly the homologous structures? 6 613 Recommended Questions Organs appearing only in embryonic stage and disappearing later in the adult, Organs with anatomical similarities, but performing different functions... 2 Edit Delete
15774 If there were no melanic forms in the pre-industrialisation era, what would be the end result of industrialization? 6 613 Recommended Questions Peppered moths would have increased in number, Peppered moths would have become black due to the deposition of soot... 3 Edit Delete
15773 An example of process of evolution of different species in a given geographical area starting from a common point and radiating to other areas of geography can be 6 613 Recommended Questions Origin of Numbat, Phascolarctos, Flying phalanger, Tasmanian wolf, Spotted cuscus from a primitive metatherian, Origin of Eohippus, Mesohippus, Parahippus and Pliohippus... 1 Edit Delete
15772 In England before industrialisation set in, it was observed that there were more white winged moths on trees than dark-winged or melanised moths. After industrialisation, there was more dark winged moths in the same area. The explanation put forth for this observation is a. White winged moths changed into melanised form in polluted environment due to deposition of soot b. The tree trunks became dark due to industrial smoke and soots. Under this condition the white winged moth did not survive due to predator c. Dark winged or melanised moth survived as they could hide in the background d. Black winged moth are recessive mutants of the same gene How many of the above statements are correct? 6 613 Recommended Questions One, Two... 2 Edit Delete
15771 Adaptive radiation does not follow which of the following statements? 6 613 Recommended Questions Blackbird on Galapagos islands observed by Darwin is an amazing example of Adaptive Radiation., All the varieties of Finches evolved on the same island from original seed feeding finches to insectivorous and vegetarian finches.... 3 Edit Delete
15770 Identify the correct statement amongst the following: 6 613 Recommended Questions Monocots evolved later than dicots., Mammals evolved from extinct reptiles called thecodonts.... 1 Edit Delete
15769 Which of the following will not show convergent evolution? 6 613 Recommended Questions Eye of Octopus and mammal, Flippers of Penguins and Dolphins... 4 Edit Delete
15768 Which of the following is placental mammal? 6 613 Recommended Questions Bandicoot, Numbat... 4 Edit Delete
15767 The sugar glider and flying squirrel belong to two different groups of mammals, but they have both evolved bushy tails and flaps of skin that help them exploit their forest environments more efficiently. This pattern of evolution is an example of: 6 613 Recommended Questions Character displacement, Adaptive radiation... 3 Edit Delete
15766 Select the incorrect match with respect to placental mammals and Australian marsupials. 6 613 Recommended Questions Lemur: Spotted cuscus, Bobcat: Tasmanian tiger... 4 Edit Delete
15765 According to Oparin, which one of the following was not present in the primitive atmosphere of the earth? 6 613 Recommended Questions Oxygen, Hydrogen... 1 Edit Delete
15764 Theory of spontaneous generation was rejected because: 6 613 Recommended Questions It explained origin of first life from non-living or inanimate matter and lacked experimental evidence., It was based on the biogenesis concept.... 1 Edit Delete
15763 The theory of spontaneous generation says that 6 613 Recommended Questions Life originated from the decaying and rotting matter like straw, mud etc, Life came on the earth from outerspace... 1 Edit Delete
15762 According to theory of special creation which one is wrong? 6 613 Recommended Questions All living organisms were created as such, Diversity was same since the creation.... 3 Edit Delete
15761 Theory of spontaneous generation of life was conclusively disproved by: 6 613 Recommended Questions Francesco Redi, Oparin and Haldane... 3 Edit Delete
15760 The diagram shown below represents Miller's experiment with certain labelled parts. Find out the correct set of labelling: 6 613 Recommended Questions A - CH₄, NH₃, H₂O, vapour, CO₂; B - Vacuum pump; C - Alanine, glycine, aspartic acid, C - Alanine, glycine, glutamic acid; D - Vacuum pump; F - Electrodes... 3 Edit Delete
15759 Which of the following statements is true? 6 613 Recommended Questions A British scientist created the conditions proposed by Oparin and Haldane in a closed flask with temperature of 800 degree Celsius in electric discharge along with gases methane, hydrogen, ammonia and water vapour and observed formation of amino acid., Some similar experimental setups were also prepared by other scientists and formation of sugar, nitrogenous bases, Pigments and Fats was recorded.... 2 Edit Delete
15758 In the apparatus of the Urey and Miller experiment, the gases [G] contained in the flask are: 6 613 Recommended Questions Methane, Carbon dioxide, Ammonia, and Water vapour, Methane, Hydrogen cyanide, Ammonia, and Water vapour... 3 Edit Delete
15757 Which one of the following was obtained by S. Miller in his experiments on the origin of life before 1953: 6 613 Recommended Questions Simple sugars, Amino acids... 2 Edit Delete
15756 In Miller's experiment, he used a mixture of CH₄, NH₃, H₂ and water vapour in a closed flask to mimic early earth conditions. What was the temperature at which this flask was kept? 6 613 Recommended Questions 800 °C, 1200 °C... 1 Edit Delete
15755 Which of the following statements is TRUE? 6 613 Recommended Questions Prokaryotes evolved before eukaryotes., Eukaryotes evolved before prokaryotes.... 1 Edit Delete
15754 The concept of chemical evolution is based on 6 613 Recommended Questions crystallization of chemicals, interaction of water, air, and clay under intense heat... 4 Edit Delete
15753 Which of the following options is not correct regarding the early atmosphere? (A) Oxygen was totally absent (B) Atmosphere was reducing (C) Temperature was high (D) Presence of free H₂ molecules (E) Presence of molecules like CH₄, NH₃, H₂O vapours 6 613 Recommended Questions A, D and E, A and D... 4 Edit Delete
15752 Which of the following is not true about Big Bang theory? 6 613 Recommended Questions A singular huge explosion, Universe expanded and temperature came down... 3 Edit Delete
15751 After about how many years of the formation of the earth, life appeared on this planet? 6 613 Recommended Questions 500 billion years, 50 million years... 3 Edit Delete
15750 Which of the following statements are not true? 6 613 Recommended Questions The origin of life is considered a unique event in the history of universe., Earth is just a speck.... 3 Edit Delete
15749 Why does it is said that looking at stars on a clear night sky means looking back in time? 6 613 Recommended Questions What we are seeing at that time is actually has stated its journey millions of years back, What we are seeing at that time is actually has stated its journey trillions of days back... 1 Edit Delete
15748 Mark the incorrect statement with respect to evolution 6 613 Recommended Questions When we see objects in our immediate surroundings we see them instantly and hence in the present time, When we look at stars on a clear night sky we are, looking back in time... 3 Edit Delete
15747 In a assisted reproductive technology where gametes have been fertilized invitro, which of the following is practicable for embryo transplantation in fallopian tube? 6 612 Recommended Questions Only embryo (up to 8 blastomeres if zygote is not transplanted), Only zygote is transplanted not embryo... 3 Edit Delete
15746 A lady is diagnosed to have both her fallopian tubes blocked. What ART can help her to conceive a child? 6 612 Recommended Questions GIFT, ZIFT... 3 Edit Delete
15745 Match the following: Column-I I. Zygote Inter-Fallopian Transfer II. Gamete Intra Fallopian Transfer III. Zygote Intra Fallopian Transfer IV. Inter Cytoplasmic Sperm Injection V. Intra Cytoplasmic Sperm Injection Column-II A. ZIFT B. ICSI C. GIFT 1. I - A, II - C, V - B 2. I - C, III - A, IV - B 3. I - A, II - C, IV - B 4. II - C, III - A, V - B 6 612 Recommended Questions I - A, II - C, V - B, I - C, III - A, IV - B... 4 Edit Delete
15744 Given below are some assisted reproductive technologies (ARTs), in which many technologies involve(s) invitro fertilization? GIFT, ZIFT, ICSI, IUT, IUI 6 612 Recommended Questions Four, Three... 2 Edit Delete
15743 In vitro fertilization is a technique that involves transfer of which one of the following into the fallopian tube? 6 612 Recommended Questions Embryo only, up to 8 cell stage, Either zygote or early embryo up to 8 cell stage... 2 Edit Delete
15742 What is false for ZIFT? 6 612 Recommended Questions ZIFT - Zygote Intra Fallopian Transfer, It follows IVF... 4 Edit Delete
15741 Which of the following statements is incorrect regarding test-tube baby? 6 612 Recommended Questions Early embryo (with up to 8 blastomeres) is transferred into the fallopian tube, Embryo with more than 8 blastomeres is transferred into the uterus... 4 Edit Delete
15740 In case of a couple, where the male is having a very low sperm count, which technique will be suitable for fertilisation? 6 612 Recommended Questions Intrauterine Transfer, Gamete intracytoplasmic fallopian transfer... 3 Edit Delete
15739 Artificial insemination means 6 612 Recommended Questions transfer of sperms of a healthy donor to a test-tube containing ova, transfer of sperms of husband to a test-tube containing ova... 3 Edit Delete
15738 In 'test-tube baby' procedure: 6 612 Recommended Questions Fertilization is in-vitro but embryo development is in-vivo, Fertilization is in-vivo but embryo development is in-vitro... 1 Edit Delete
15737 Which of the following is the incorrect match with respect to ART? 6 612 Recommended Questions ZIFT: Zygote or early embryo up to eight blastomeres is transferred into the fallopian tubes., IUT: Embryo with more than eight blastomeres is transferred into the uterus... 3 Edit Delete
15736 What is false for GIFT? 6 612 Recommended Questions It is Gamete Intra-Fallopian Transfer, Ovum from a donor is transferred into the oviduct of the recipient... 3 Edit Delete
15735 ART [used to help infertile couples] stands for: 6 612 Recommended Questions Assisted Reproductive Technologies, Artificial Reproductive Technologies... 1 Edit Delete
15734 Match the Column-A with the Column-B: Column-I I. IUT II. Birth control III. Spermicides IV. STD Column-II A. Copper T B. Agent to kill spermatozoa C. VDRL D. To help infertile couple 6 612 Recommended Questions I → D, II → C, III → A, IV → B, I → D, II → C, III → B, IV → A... 4 Edit Delete
15733 An ART, in which embryo with more than 8 blastomeres could be transferred into the uterus is 6 612 Recommended Questions ZIFT, IUI... 3 Edit Delete
15732 Match the ARTs with their description I. Collected gametes are made to form the zygote in the laboratory. II. Zygote or early embryo with up to 8 blastomeres is transferred into the oviduct. III. Zygote with more than 8 blastomeres is transferred into the uterus. IV. Fusion of gametes within the female. V. Transfer of ovum from a donor to the oviduct of the recipient. VI. Sperm is injected into the ovum in-vitro. 6 612 Recommended Questions I - G, II - B, III - F, IV - H, V - A, VI - D, I - F, II - B, III - A, IV - H, V - A, VI - G... 3 Edit Delete
15731 Embryo with more than 16 blastomeres formed due to in vitro fertilisation is transferred into? 6 612 Recommended Questions uterus, fallopian tube... 1 Edit Delete
15730 Which of the following complication is/are not related with STDs? a. Pelvic inflammatory diseases b. Still births c. Ectopic pregnancies d. Erythroblastosis foetalis 6 612 Recommended Questions a & b, a, b & c... 3 Edit Delete
15729 Which of the sets of diseases are completely curable if detected early? 6 612 Recommended Questions Hepatitis - B, Gonorrhoea, Syphilis, Genital herpes, Chlamydiasis, Syphilis... 4 Edit Delete
15728 Choose the correct option: I. RTI- Reproductive Tract Infections II. VD-Venereal Diseases III. STD - Sexually Transmitted Diseases IV. IVF - Intra Vaginal Transfer 6 612 Recommended Questions All of the above, I, II, III... 2 Edit Delete
15727 Which of the following is not a sexually transmitted disease? 6 612 Recommended Questions Syphilis, Acquired Immuno-Deficiency Syndrome (AIDS)... 4 Edit Delete
15726 Identify the true statements from the below statements: I. There are many side effects of tubectomy and vasectomy. II. Purpose of tubectomy is to prevent egg formation. III. The most important component of the oral contraceptive pills is progesterone. IV. Contraceptive oral pills help in birth control by preventing ovulation. V. Genital warts is a sexually transmitted disease caused by herpes virus. VI. In India, there is rapid decline in infant mortality rate and MMR. 6 612 Recommended Questions I, II and III, I, II and V... 3 Edit Delete
15725 To avoid transmission of STDs: I. Avoid sex with multiple partners. II. Always have unprotected sex. III. Use condoms during coitus. IV. Avoid sex with unknown partners V. Avoid sharing of needles 6 612 Recommended Questions All of the above, I, III, IV, V... 2 Edit Delete
15724 Which of the following is/are related to STDs? 6 612 Recommended Questions Infertility, Still birth... 4 Edit Delete
15723 Which of the given below sexually transmitted disease is completely curable? 6 612 Recommended Questions Trichomoniasis, Genital herpes... 1 Edit Delete
15722 Which of the following diseases is/are not completely curable? 6 612 Recommended Questions Genital herpes, HIV infection... 3 Edit Delete
15721 STDs lead to: 6 612 Recommended Questions Itching, fluid discharge, slight pain, swellings, etc., Pelvic Inflammatory Diseases (PID), ectopic pregnancies, still births, infertility, abortions, etc.... 3 Edit Delete
15720 People especially vulnerable to STDs are in the age group: 6 612 Recommended Questions 15 - 24, 25 - 40... 1 Edit Delete
15719 Prevention of transmission of STDs is possible by 6 612 Recommended Questions Avoiding sex with unknown persons/multiple persons, Using condoms during coitus... 4 Edit Delete
15718 MTP is practised mainly to: 6 612 Recommended Questions Get rid of unwanted female child legally, Get rid of unwanted pregnancies due to failure of contraception or rapes... 2 Edit Delete
15717 The reason to legalise conditional MTPs by the government of India is 6 612 Recommended Questions To decrease the population growth rate, To check indiscriminate and illegal male foeticide... 3 Edit Delete
15716 Opinion of how many registered medical practitioners is required for MTP, if the pregnancy has lasted more than 12 weeks, but fewer than 24 weeks? 6 612 Recommended Questions One, Two... 2 Edit Delete
15715 Intentional or voluntary termination of pregnancy before full term is called: 6 612 Recommended Questions Contraception, Spontaneous abortion... 3 Edit Delete
15714 Following statements are given regarding MTP. Choose the correct options given below: I. MTPs are generally advised during first trimester II. MTPs are used as a contraceptive method III. MTPs are always surgical IV. MTPs require the assistance of qualified medical personnel 6 612 Recommended Questions I and III, II and III... 3 Edit Delete
15713 MTP is: 6 612 Recommended Questions Medical Termination of Pregnancy, Also called induced abortion... 3 Edit Delete
15712 MTP was legalised in India in: 6 612 Recommended Questions 1971, 1951... 1 Edit Delete
15711 Consider the statements given below regarding contraception and answer as directed thereafter A. Medical Termination of Pregnancy (MTP) during first trimester is generally safe B. Generally, chances of conception are nil until mother breast-feeds the infants up to two years C. Intrauterine devices like copper-T are effective contraceptives D. Contraception pills may be taken up to one week after coitus to prevent conception Which two of the above statements are correct? 6 612 Recommended Questions B, C, C, D... 3 Edit Delete
15710 Select the option which correctly fills up the blanks in the following statements. A. Destruction of embryo or foetus in the uterus is called ____________. B. Government of India legalized MTP in the year ____________. C. Natural family planning method is also called ____________. D. ____________ is a method in which the male partner withdraws his penis from vagina just before ejaculation. E. ____________ is the copper releasing and is a hormone releasing intra uterine devices. 6 612 Recommended Questions A - Foeticide, B - 1961, C - Rhythm method, D - Coitus interruptus, E - Multiload 375, LNG-20, A - Foeticide, B - 1971, C - Rhythm method, D - Coitus interruptus, E - Multiload 375, LNG-20... 2 Edit Delete
15709 All the following are uses of amniocentesis, but one is misuse. Which one is misuse? 6 612 Recommended Questions This technique has been developed for detecting foetal abnormalities by analyzing chromosomal defects, The centers for genetic counselling offer amniocentesis on request of women to know: will our baby be normal... 3 Edit Delete
15708 MTPs are considered relatively safe during the ______ trimester; ______ trimester abortions are riskier: 6 612 Recommended Questions First, second, Second, first... 1 Edit Delete
15707 Match column I and column II with respect to contraceptive methods and their mode of actions. 6 612 Recommended Questions a(i), b(ii), c(iii), d(iv), a(iv), b(i), c(iii), d(ii)... 2 Edit Delete
15706 Consider the following statements: I: The male barrier contraceptives provide protection against STDs. II: Oral contraceptive pills (OCPs) are the contraceptive method used more commonly by urban women in India. III: The second-generation IUDs release copper and the third-generation IUDs release hormones. Which of the above statements are true? 6 612 Recommended Questions I and II only, I and III only... 4 Edit Delete
15705 Birth control pills contain synthetic estrogen and progesterone. How might these hormones prevent pregnancy? 6 612 Recommended Questions They cause the corpus luteum to degenerate., They keep the pituitary from secreting FSH and LH, so ovulation does not occur.... 2 Edit Delete
15704 Progesterone alone or in combination with estrogen can also be used as contraceptives by females as injections or implants under their skin. When used in this manner, they: 6 612 Recommended Questions do not affect the release of the ovum, induce a foreign body reaction leading to rejection of the implanted blastocyst... 4 Edit Delete
15703 Which of the following is/are correct statement regarding contraception? (1) Insertion of IUD could be effective contraceptive within 3 days of unprotected sex (2) Morning after pills are used as emergency contraceptives (3) IUDs prevent STDs. (4) Lactational amenorrhea is due to hyperprolactinemia 6 612 Recommended Questions (1) only, (1), (2) & (4) only... 2 Edit Delete
15702 Oral contraceptives do not work by 6 612 Recommended Questions Inhibition of ovulation, Changing the consistency of cervical mucus... 4 Edit Delete
15701 Which of the following contraceptive methods do involve a role of hormone? 6 612 Recommended Questions Pills, Emergency contraceptives, barrier methods, Lactational amenorrhea, Pills, Emergency contraceptives... 2 Edit Delete
15700 What is true about 'Saheli'? 6 612 Recommended Questions I, II, III, V, VI, I, III, V, VI... 2 Edit Delete
15699 The combination pill is taken by a female: 6 612 Recommended Questions Daily for a period of 21 days beginning within first 5 days of the menstrual cycle, On alternate days for a period of 21 days beginning within first 5 days of the menstrual cycle... 1 Edit Delete
15698 Identify the incorrect statement regarding surgical birth control methods: 6 612 Recommended Questions They are also called as "sterilization" procedures, In males, vasectomy and in females, tubectomy is advised... 4 Edit Delete
15697 Surgical methods of contraception prevent: 6 612 Recommended Questions Gamete formation, Gamete motility... 2 Edit Delete
15696 Oral contraceptive pills are composed of: 6 612 Recommended Questions Progestogens only, Progestogen - estrogen combinations... 4 Edit Delete
15695 Which of the following approaches does not give the defined action of contraceptive? 6 612 Recommended Questions Intra uterine devices Increase phagocytosis of sperms, suppress sperm motility and fertilising capacity of sperms, Hormonal contraceptives Prevent/ retard entry of sperms, prevent ovulation and fertilisation... 3 Edit Delete
15694 Regular oral contraceptive pills contain 6 612 Recommended Questions Progestogen only., Progestogen - estrogen combination.... 4 Edit Delete
15693 What is true for surgical methods? I. Also called sterilization II. Terminal method of contraception III. Block gamete transport IV. Called vasectomy in females and tubectomy in males V. High reversibility and contraceptive efficiency 6 612 Recommended Questions I, II, III, IV, I, II, III, V... 4 Edit Delete
15692 Which of the following is incorrect regarding vasectomy? 6 612 Recommended Questions No sperm occurs in seminal fluid, No sperm occurs in epididymis... 2 Edit Delete
15691 Match the following: Column-I A. Coitus Interruptus B. LNG - 20 C. Diaphragms D. Multiload 375 E. Saheli F. Nirodh G. Sterilization H. Vasectomy I. CuT Column-II I. Natural methods II. IUDs III. Barrier methods IV. Surgical methods V. Oral contraceptives 6 612 Recommended Questions I - A; II - D, I; III - C, F; IV - G, H; V - E, B, I - A; II - B, D, I; III - C, F; IV - G, H; V - E... 2 Edit Delete
15690 Emergency contraceptive methods must be employed within: 6 612 Recommended Questions 72 hours of ovulation, 72 hours of onset of menstrual flow... 3 Edit Delete
15689 The main drawback of the surgical methods for birth control is: 6 612 Recommended Questions They are poorly reversible, They are very expensive... 1 Edit Delete
15688 Match the following birth control methods with their corresponding images. 6 612 Recommended Questions A - VI, B - V, C - III, D - II, E - I, A - III, B - V, C - IV, D - I, E - II... 3 Edit Delete
15687 Consider the two surgical procedures given below and choose the correct statement: 6 612 Recommended Questions A is a more difficult procedure than B., The reversibility of A is good but that of B is very poor.... 4 Edit Delete
15686 Select the mismatch with respect to function of contraceptives. 6 612 Recommended Questions Oral contraceptive pills - Prevent ovulation, Barrier methods - Prevent physical meeting of gametes.... 3 Edit Delete
15685 The accompanying diagram shows the uterine tubes of four women (P, Q, R and S): In which two women is fertilization impossible at present? 6 612 Recommended Questions P and Q, Q and R... 3 Edit Delete
15684 Given below are four methods (A-D) and their modes of action (1-4) in achieving contraception. Select their correct matching from the four options that follow: Method A. The pill 1. Prevents sperms from reaching cervix B. Condom 2. Prevents implantation C. Vasectomy 3. Prevents ovulation D. Copper-T 4. Semen contains no sperms 6 612 Recommended Questions A-3 B-1 C-4 D-2, A-4 B-1 C-2 D-3... 1 Edit Delete
15683 Which of the following is/are correct? 6 612 Recommended Questions Pill prevents ovulation, Vasectomy causes semen having no sperms... 4 Edit Delete
15682 Tubectomy is a method of sterilisation in which 6 612 Recommended Questions Small part of the Fallopian tube is removed or ties up, Ovaries are removed surgically... 1 Edit Delete
15681 Which of the following have been found to be very effective as emergency contraceptive as they could be used to avoid possible pregnancy due to rape if given within 72 hours? A. Cervical caps B. Progestogen-estrogen combination C. Vaults 6 612 Recommended Questions A only, A and B only... 4 Edit Delete
15680 Pills, implants and IUDs are very effective if taken within ________ of coitus. 6 612 Recommended Questions 5 days, 72 hours... 2 Edit Delete
15679 "Saheli" is a(n) 6 612 Recommended Questions NGO working for female child rights, Mid-wife working in villages to help in child immunization... 4 Edit Delete
15678 Read the below-given statements. A. Hormone containing intrauterine contraceptive devices are not very effective contraceptive methods in comparison to the barrier methods. B. IUCDs don't prevent the entry of sperms into the uterus. Choose the correct option. 6 612 Recommended Questions Statement A is correct and B is the correct explanation of statement A, Both the statements are correct... 3 Edit Delete
15677 Which of the following is not an application of IUDs? 6 612 Recommended Questions Create a sterile inflammatory response by producing a tissue injury of a minor degree., Changing the intra-uterine environment and making it spermicidal.... 4 Edit Delete
15676 Which of the following contraceptive devices make uterus unsuitable for implantation? 6 612 Recommended Questions Progestasert, CuT... 1 Edit Delete
15675 IUDs: I. Increase phagocytosis of sperms II. Release Cu ions that suppress sperm motility and fertilising capacity of sperms III. Make the uterus unsuitable for implantation IV. Make the cervix hostile to sperms V. Prevent semen from entering the female reproductive tract. 6 612 Recommended Questions I, II, III, IV, V, I, II, III, IV... 2 Edit Delete
15674 The ideal contraceptive for females who want to delay pregnancy and/or space children is: 6 612 Recommended Questions Barrier contraceptive, Periodic abstinence... 3 Edit Delete
15673 Odd one with respect to barrier methods of contraception is 6 612 Recommended Questions Nirodh, Diaphragms... 3 Edit Delete
15672 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I I. Norplant II. LNG-20 III. DMPA IV. RU-486 Column II 1. IUD 2. Subcutaneous implant 3. Abortion pill 4. Injectable Codes: I II III IV 6 612 Recommended Questions 1 2 3 4, 2 1 4 3... 2 Edit Delete
15671 Mark the hormone-releasing IUDs which suppress endometrial changes in cervical mucus, cause anovulation and insufficient luteal activity. 6 612 Recommended Questions Lippes Loop, Multiload 375... 3 Edit Delete
15670 Diaphragms, cervical caps and vaults are: 6 612 Recommended Questions Reusable, Non-reusable... 1 Edit Delete
15669 Column-I: A. Lippes loop B. Multiload 375 C. CuT D. Cu7 E. LNG-20 F. Progestasert Column-II: I. Non-medicated IUDs II. Hormone releasing IUDs III. Copper releasing IUDs The correct match is: 6 612 Recommended Questions I → A; II → B, F; III → C, D, E, I → A; II → E, F; III → B, C, D... 2 Edit Delete
15668 Cu released by CuTs plays a role in: 6 612 Recommended Questions Increasing phagocytosis of sperms, Suppressing sperm motility... 4 Edit Delete
15667 Odd one out in given barrier method of contraception 6 612 Recommended Questions Nirodh, Diaphragm... 1 Edit Delete
15666 What is true for IUDs? I. They are self-inserted II. They are inserted by expert nurses III. They may be non-medicated IUDs, copper releasing IUDs or hormone releasing IUDs. IV. They are the one of the most widely accepted contraceptives in India. V. They are inter-uterine devices 6 612 Recommended Questions All of the above, II; III, IV... 2 Edit Delete
15665 Diaphragms, cervical caps and vaults prevent conception by 6 612 Recommended Questions Increasing phagocytosis of sperms within uterus., Suppressing sperm motility.... 4 Edit Delete
15664 Condoms are barriers that cover: 6 612 Recommended Questions Penis in male and ovary in female, Penis in male and cervix and vagina in female... 2 Edit Delete
15663 Using which contraceptive also provides protection from contracting STDs and AIDs? 6 612 Recommended Questions Diaphragms, Spermicidal foams... 3 Edit Delete
15662 Multiload 375 is responsible for 6 612 Recommended Questions Stimulation of ovulation, Stimulation of gametogenesis... 3 Edit Delete
15661 In lactational amenorrhoea, there is no ovulation or menstruation during the period of intense lactation following parturition, due to high level of prolactin, which? 6 612 Recommended Questions Inhibits the release of gonadotropins, Inhibits the release of estrogen and progesterone... 1 Edit Delete
15660 Lactational amenorrhea method of contraception is based on the fact that: 6 612 Recommended Questions Ovulation and menstrual flow does not occur post conception during intense lactation, The cervix mucus becomes hostile to sperms after parturition during intense lactation... 3 Edit Delete
15659 State which is true: I. Abortions could happen spontaneously too. II. Infertility is the inability to produce viable offspring due to defects in the female partner only III. Complete lactation could help in contraception IV. Creating awareness can help create a reproductively healthy society 6 612 Recommended Questions I, III, IV, I, II, III... 1 Edit Delete
15658 Natural methods for contraception work on the principle of: 6 612 Recommended Questions Preventing fertilization, Preventing implantation... 1 Edit Delete
15657 Periodic abstinence is a natural method of contraception where the couples avoid or abstain from coitus during the period of the menstrual cycle when: 6 612 Recommended Questions There is menstrual flow, The ovulation is most likely to occur... 2 Edit Delete
15656 In periodic abstinence, the couple must avoid the coitus/sexual contact from day ______ of the menstrual cycle 6 612 Recommended Questions 14 to 21, 18 to 21... 4 Edit Delete
15655 Lactational amenorrhea is effective up to maximum period of: 6 612 Recommended Questions 3 months, 6 months... 2 Edit Delete
15654 Amenorrhea 6 612 Recommended Questions will cause overdevelopment of the secondary sex characteristics, is never normal... 4 Edit Delete
15653 In case of natural method of contraception, like Lactational Amenorrhoea, it serves for a maximum period of 6 612 Recommended Questions One week, One month... 4 Edit Delete
15652 Natural methods of birth control include? 6 612 Recommended Questions Abstinence, Coitus interruptus... 4 Edit Delete
15651 Which of the following is not a cause for the rapid increase of Indian population today? 6 612 Recommended Questions A rapid decline in death rate, An increase in the number of people in reproducible age... 3 Edit Delete
15650 Which one of the following is tested by the technique of amniocentesis? 6 612 Recommended Questions Biochemical abnormalities in the foetus, Errors of metabolism in the foetus... 3 Edit Delete
15649 In context of amniocentesis, which of the following statements is incorrect? 6 612 Recommended Questions It is used for prenatal sex-determination, It can be used for detection of Down syndrome... 3 Edit Delete
15648 Choose the correct statements: I. According to the WHO, reproductive health is total well-being in the physical, social, emotional, behavioural aspects of reproduction II. According to the WHO, reproductive health is total well being only in the social and emotional aspects of reproduction. III. A reproductively healthy society has people with physically and functionally normal reproductive organs IV. Reproductively healthy societies have abnormal sex-related emotional and behavioural interactions 6 612 Recommended Questions I, II, III, II, IV... 3 Edit Delete
15647 Which of the following is not a factor that has led to a population explosion in India? 6 612 Recommended Questions Decline in death rate, Decline in maternal mortality rate... 4 Edit Delete
15646 What is the approximate Indian population according to the recent census (May 2000)? 6 612 Recommended Questions About 1 billion, About 1 million... 1 Edit Delete
15645 The permissible use of the technique amniocentesis is for 6 612 Recommended Questions detecting sex of the unborn foetus, artificial insemination... 4 Edit Delete
15644 Which of the following cannot be detected in a developing foetus by amniocentesis? 6 612 Recommended Questions Klinefelter's syndrome, Sex of the foetus... 4 Edit Delete
15643 Statutory ban on amniocentesis in India was necessary because: 6 612 Recommended Questions It is a very expensive, It can tell about chromosomal aberrations... 4 Edit Delete
15642 What does RCH stand for? 6 612 Recommended Questions Reproductive and Complete Health, Regional and Central Healthcare... 3 Edit Delete
15641 Select the statement(s) that relate to reproductive health: 6 612 Recommended Questions Healthy reproductive organs with normal functions, Emotional aspects of reproduction... 4 Edit Delete
15640 Mainly which hormones control the menstrual cycle in human beings: 6 611 Recommended Questions FSH, LH... 3 Edit Delete
15639 If mammalian ovum fails to get fertilized, which one of the following is unlikely - 6 611 Recommended Questions Estrogen secretion further decreases, Progesterone secretion rapidly declines... 4 Edit Delete
15638 Which one of the following events is correctly matched with the time period in a normal menstrual cycle? 6 611 Recommended Questions Release of egg: 5th day, Endometrium regenerates: 5 - 10 days... 2 Edit Delete
15637 In which phase of menstrual cycle three peaks are observed at once? 6 611 Recommended Questions Secretory phase, Follicular phase... 2 Edit Delete
15636 Which of the following hormones show two peaks during a standard menstrual cycle? 6 611 Recommended Questions Estrogen, Progesterone... 1 Edit Delete
15635 Menstrual bleeding is the result of: 6 611 Recommended Questions low levels of ovarian hormones, high levels of ovarian hormones... 1 Edit Delete
15634 On first day of standard cycle, which pituitary hormone is more in amount? 6 611 Recommended Questions FSH, LH... 1 Edit Delete
15633 The correct sequence of the various phases of a typical menstrual cycle is: 6 611 Recommended Questions Menstrual → Follicular → secretory → Ovulatory, Menstrual → Follicular → Ovulatory → secretory... 2 Edit Delete
15632 Which event is incorrectly matched with the time of its occurrence [with respect to a 28 days menstrual cycle]? 6 611 Recommended Questions Beginning of the menstrual flow - Day 1, Ovulation - Day 14... 4 Edit Delete
15631 Which of the following events is not associated with ovulation in human female? 6 611 Recommended Questions Decrease in oestradiol, Full development of Graafian follicle... 1 Edit Delete
15630 The menstrual cycle begins with the casting off of 6 611 Recommended Questions Placenta, Blood... 3 Edit Delete
15629 The following graph of relative concentrations of the four hormones present in the blood plasma of a woman during menstrual cycle. Identify the hormones: 6 611 Recommended Questions FSH, Progesterone, LH, Oestrogen, LH, Progesterone, FSH, Oestrogen... 3 Edit Delete
15628 Match the items given in Column I with those in Column II and select the correct option given below: 6 611 Recommended Questions (iii) (ii) (i), (i) (iii) (ii)... 3 Edit Delete
15627 In the given diagram, identify A, B, C and D respectively: 6 611 Recommended Questions LH, FSH, Progesterone and Estrogen, FSH, LH, Estrogen and Progesterone... 2 Edit Delete
15626 Match the following: Column-I: (i) Relaxin, (ii) Prolactin, (iii) Progesterone, (iv) LH. Column-II: (a) Maternity hormone, (b) Ovulation, (c) Parturition, (d) Pregnancy hormone. 6 611 Recommended Questions (i) → (a), (ii) → (c), (iii) → (b), (iv) → (d), (i) → (c), (ii) → (d), (iii) → (b), (iv) → (a)... 4 Edit Delete
15625 Hormones for the menstrual cycle are produced by 6 611 Recommended Questions ovaries only, uterus only... 4 Edit Delete
15624 Menstrual flow occurs due to shedding off 6 611 Recommended Questions Endometrium, Myometrium... 1 Edit Delete
15623 Morula stage is generally observed in 6 611 Recommended Questions Infundibulum region, Ampulla region... 3 Edit Delete
15622 Mark the wrong statement for uterus? 6 611 Recommended Questions The shape of it like an inverted pear., It is supported by a ligament attached to the pelvic wall.... 3 Edit Delete
15621 What structure gets implanted on the wall of the uterus during embryonic development? 6 611 Recommended Questions Option 1, Option 2... 4 Edit Delete
15620 Morula stage is related to: 6 611 Recommended Questions 8 -16 celled, After the fertilization stage... 4 Edit Delete
15619 Cleavage starts 6 611 Recommended Questions When zygote moves from ampulla towards womb, When zygote comes in womb... 1 Edit Delete
15618 At the time of implantation, cells attached to the endometrium of the uterus are 6 611 Recommended Questions Inner cell mass, Trophoblast... 2 Edit Delete
15617 Which event surely leads to pregnancy 6 611 Recommended Questions Unprotected coitus, Fertilization... 3 Edit Delete
15616 A change in ovum after penetration of sperm is 6 611 Recommended Questions Formation of first polar body, Second meiosis starts... 4 Edit Delete
15615 The second maturation division of the mammalian ovum occurs 6 611 Recommended Questions shortly after ovulation before the ovum makes entry into the Fallopian tube, until after the ovum has been penetrated by a sperm... 2 Edit Delete
15614 Extrusion of the second polar body from the egg nucleus occurs: 6 611 Recommended Questions simultaneously with the first cleavage, after entry of sperm but before fertilization... 2 Edit Delete
15613 What ensures that only one sperm can fertilize the ovum? 6 611 Recommended Questions Corona radiata, Ground substance around ovum... 3 Edit Delete
15612 Sex of the baby is determined at 6 611 Recommended Questions Insemination, Zygote formation... 2 Edit Delete
15611 During fertilization spermatozoa does not pass through 6 611 Recommended Questions Birth canal., Uterine tube.... 3 Edit Delete
15610 Fertilization membrane is formed to 6 611 Recommended Questions Facilitate entry of sperm into egg., Provide stability to egg.... 4 Edit Delete
15609 What induces the completion of the meiotic division of the secondary oocyte? 6 611 Recommended Questions Contact of the sperm with the zona pellucida layer of ovum, Entry of the sperm into the cytoplasm of the ovum through the zona pellucida and the plasma membrane... 2 Edit Delete
15608 At the end of the second meiotic division, the human female germ cells differentiate to form 6 611 Recommended Questions Oogonia, First polar body... 3 Edit Delete
15607 What is the order of layers or space from outside to inside? 6 611 Recommended Questions Zona pellucida-Perivitelline space- plasma membrane, Perivitelline space- Plasma Membrane- Zona Pellucida... 1 Edit Delete
15606 Consider the following two statements: I. Not all copulations lead to fertilization and pregnancy II. Fertilization can occur if the ovum and the sperms are simultaneously transported to the fallopian tubes. 6 611 Recommended Questions Both I and II are correct and II correctly explains I, Both I and II are correct but II does not explain I... 1 Edit Delete
15605 One of the following is haploid cell 6 611 Recommended Questions Primordial germ cell, Oogonium... 4 Edit Delete
15604 Choose the incorrect match 6 611 Recommended Questions Morula – 8 to 16 blastomeres, Blastocyst – Implantation in Endometrium... 3 Edit Delete
15603 In human females, meiosis-II is not completed until 6 611 Recommended Questions Puberty, fertilization... 2 Edit Delete
15602 Fertilisation in humans is practically feasible only if 6 611 Recommended Questions the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the fallopian tube, the ovum and sperms are transported simultaneously to ampullary-isthmic junction of the cervix... 1 Edit Delete
15601 Sperm has several components out of which the function of the acrosome is to: 6 611 Recommended Questions Produce base to neutralize the acidic environment of the female reproductive system, Propel the sperm as they swim through the fluid of the female reproductive tract... 3 Edit Delete
15600 What happens during fertilisation in humans after many sperms reach close to the ovum? 6 611 Recommended Questions Only two sperms nearest the ovum penetrate zona pellucida, Secretions of acrosome help one sperm enter the cytoplasm of the ovum through zona pellucida... 2 Edit Delete
15599 Absence of acrosome will affect which activity in a normal sperm? 6 611 Recommended Questions Maturation of sperm, Energy utilization for movement... 4 Edit Delete
15598 The........ is folds of fleshy tissue which extends down from...... and surrounds the vaginal opening. 6 611 Recommended Questions Labia minora, Labia majora, Labia minora, Mons pubis... 3 Edit Delete
15597 Which of the following structures is not a part of female external genitalia? 6 611 Recommended Questions Mons pubis, Hymen... 3 Edit Delete
15596 Consider the following two statements: I. The hymen is often torn during the first coitus. II. The presence or absence of hymen is a reliable indicator of virginity. Of the two statements: 6 611 Recommended Questions Both I and II are correct and II explains I., Both I and II are correct and II does not explain I.... 3 Edit Delete
15595 Which statement is incorrect regarding female external genitalia? 6 611 Recommended Questions Mons pubis is a cushion of fatty tissue covered by skin and pubic hairs, The clitoris lies at the upper junction of labia minora below the urethral opening... 2 Edit Delete
15594 Which of the following is a paired structure? 6 611 Recommended Questions Mons Pubis, Clitoris... 4 Edit Delete
15593 Which of the following is not a part of female external genitalia? 6 611 Recommended Questions Birth canal, Hymen... 1 Edit Delete
15592 A cushion of fatty tissue is 6 611 Recommended Questions Mons pubis, Labia minora... 1 Edit Delete
15591 In the figure shown below, which of the following group of markings includes external genitalia only? 6 611 Recommended Questions W, L, M, X, Y, Z... 1 Edit Delete
15590 Find the odd one out regarding external genitalia located in pelvic region 6 611 Recommended Questions Mons pubis, Clitoris... 4 Edit Delete
15589 The female accessory duct does not include- 6 611 Recommended Questions Fallopian tube, Uterus... 3 Edit Delete
15588 Female reproductive system supports which of the following processes? 6 611 Recommended Questions Child care, Insemination... 2 Edit Delete
15587 The figure given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of A-F have been correctly identified? 6 611 Recommended Questions C-Infundibulum, D-Fimbriae, E-Cervix, D-Oviducal funnel, E-Uterus, F-Cervix... 1 Edit Delete
15586 Female reproductive system doesn't include 6 611 Recommended Questions Ovaries, External Genitalia... 4 Edit Delete
15585 Which of the following is a paired structure of female reproductive system? 6 611 Recommended Questions Womb, Ampulla... 2 Edit Delete
15584 What do A, B, C and D represent? 6 611 Recommended Questions A: Infundibulum, B: Fertilization, C: Myometrium, D: Morula, A: Infundibulum, B: Fertilization, C: Endometrium, D: Blastocyst... 2 Edit Delete
15583 Which of the following has a cavity forming canal? 6 611 Recommended Questions Cervix, Fallopian tube... 1 Edit Delete
15582 Ovary is not 6 611 Recommended Questions Covered by thick epithelium to enclose stroma, Having stroma with outer part cortex and inner part Medulla... 1 Edit Delete
15581 The wider part of the fallopian tube is 6 611 Recommended Questions Infundibulum, Isthmus... 3 Edit Delete
15580 The ligaments help ovaries to be in place 6 611 Recommended Questions To form connection with pelvic wall and uterine wall, To form connection with pelvic wall... 1 Edit Delete
15579 Choose the incorrect match 6 611 Recommended Questions Testicular lobules in each testis → 250, Number of primary follicles in each ovary at puberty → 6000 to 8000... 2 Edit Delete
15578 The primary female sex organs are located 6 611 Recommended Questions One on each side of upper abdomen, At a time only one side of upper abdomen... 3 Edit Delete
15577 In the female reproductive system, the funnel-shaped part of the fallopian tube closest to the ovary is 6 611 Recommended Questions Isthmus, Infundibulum... 2 Edit Delete
15576 Which of the following structures helps in collection of ovum after ovulation? 6 611 Recommended Questions Internal os, Fimbriae... 2 Edit Delete
15575 Which of the following is not associated with the secretion of milk in mammary glands? 6 611 Recommended Questions Mammary duct, Mammary lobes... 4 Edit Delete
15574 Mammary lobe has not 6 611 Recommended Questions Alveoli, Mammary tubules... 4 Edit Delete
15573 Milk produced by alveoli is stored in 6 611 Recommended Questions Lobes, Lumen... 2 Edit Delete
15572 Which of the following sequences is correct? 6 611 Recommended Questions Lobes- Mammary Duct- Ampulla- Lactiferous Duct, Alveoli- tubules-Lactiferous Duct-Mammary Ducts... 1 Edit Delete
15571 Which of the following statements is not true with respect to mammary glands? 6 611 Recommended Questions Contain glandular tissue and variable amount of fat tissues, Contain 15-20 mammary lobes containing clusters of cells called alveoli where cells of alveoli secrete milk... 3 Edit Delete
15570 In a functional mammary gland, the cells of _______ secrete milk, which is stored in the cavities of alveoli. Choose the option that fills the blank correctly. 6 611 Recommended Questions Alveoli, Lactiferous duct... 1 Edit Delete
15569 Mammary glands are not 6 611 Recommended Questions Paired structure, Having glandular tissue... 3 Edit Delete
15568 Colostrum is 6 611 Recommended Questions Milk of first day, Milk of initial few hours... 3 Edit Delete
15567 Lactation starts at 6 611 Recommended Questions At the end of pregnancy, At the end of first trimester... 1 Edit Delete
15566 Colostrum has 6 611 Recommended Questions Only one antibody, Several antibodies... 2 Edit Delete
15565 The correct sequence of mammalian mammary gland ducts beginning from alveoli would be: 6 611 Recommended Questions Mammary tubules → Mammary ducts → Mammary ampulla → Lactiferous ducts, Lactiferous ducts → Mammary ducts → Mammary ampulla → Mammary tubules... 1 Edit Delete
15564 The glandular tissue of each breast is divided into 6 611 Recommended Questions 10-12 mammary lobes, 15-20 mammary lobes... 2 Edit Delete
15563 Milk is produced by which cells? 6 611 Recommended Questions Alveoli, Lobes... 1 Edit Delete
15562 The milk produced during the initial few days of lactation, called colostrum, is essential for the new born as colostrums contains: 6 611 Recommended Questions Large amount of glucose, Anti-infective antibodies... 2 Edit Delete
15561 Breast feeding during initial period 6 611 Recommended Questions Good for healthy baby, Recommended by doctors... 4 Edit Delete
15560 After placenta formation in humans, the maternal tissue which is in contact with chorion of foetus is 6 611 Recommended Questions Uterine epithelium, Maternal connective tissue... 4 Edit Delete
15559 All of the following structures are derived from mesoderm except the ___. 6 611 Recommended Questions pancreas, dermis of skin... 1 Edit Delete
15558 The limbs and digits are formed 6 611 Recommended Questions At the ending of second month, At the ending of 8 weeks... 4 Edit Delete
15557 The mammary glands of female undergo differentiation 6 611 Recommended Questions Just after parturition, During Gestation... 2 Edit Delete
15556 Foetal ejection reflex 6 611 Recommended Questions Causes release of oxytocin from maternal pituitary, Itself is a result of release of oxytocin from maternal pituitary... 4 Edit Delete
15555 Which of the following hormones is not a secretion product of human placenta? 6 611 Recommended Questions Prolactin, Oestrogen... 1 Edit Delete
15554 Oxytocin acts on 6 611 Recommended Questions Foetus, Placenta... 3 Edit Delete
15553 Which one is correct with respect to path of removal of waste? 6 611 Recommended Questions Mother- placenta- growing Foetus, Baby- umbilical cord-mother... 3 Edit Delete
15552 Which of the following hormones are secreted by placenta? 6 611 Recommended Questions A only, A & B... 4 Edit Delete
15551 Eyelashes in foetus are formed 6 611 Recommended Questions By the end of 12 weeks, By the end of 20 weeks... 3 Edit Delete
15550 The first movements of the fetus and the appearance of hair on the head are usually observed during: 6 611 Recommended Questions 2nd month, 3rd month... 3 Edit Delete
15549 Which of the following male and female structures are least alike in function? 6 611 Recommended Questions Vas deferens — oviduct., Interstitial cells — Follicle cells.... 4 Edit Delete
15548 During pregnancy the levels of thyroxin: 6 611 Recommended Questions Increase several folds in maternal blood, Increases several folds in fetal blood... 1 Edit Delete
15547 The fetal body is covered with fine hair, eyelashes separate, and eyelashes are formed by the end of: 6 611 Recommended Questions 20 weeks, 24 weeks... 2 Edit Delete
15546 Foetal ejection reflex in human female is induced by 6 611 Recommended Questions pressure exerted by amniotic fluid, release of oxytocin from pituitary... 3 Edit Delete
15545 What does a doctor inject to induce delivery? 6 611 Recommended Questions Oxytocin, Estrogen... 1 Edit Delete
15544 During parturition, the fetal ejection reflex triggers the release of: 6 611 Recommended Questions An increasing amount of estrogen and a decreasing amount of progesterone from the placenta, A decreasing amount of estrogen and an increasing amount of progesterone from the placenta... 3 Edit Delete
15543 Choose the correct statement. 6 611 Recommended Questions hPL plays a major role in parturition, Foetus shows movements first time in the 7th month of pregnancy... 3 Edit Delete
15542 Match the column and choose the correct answer. Column-I: a. Hypothalamus b. Acrosome c. Graffian follicle d. Leydig cells e. Parturition Column-II: (i) Sperm lysin (ii) Estrogen (iii) Relaxin (iv) GnRH (v) Testosterone 6 611 Recommended Questions a(iv), b(i), c(ii), d(iii), e(v), a(ii), b(i), c(iv), d(iii), e(v)... 4 Edit Delete
15541 Which of the following is the last step in the process of embryogenesis? 6 611 Recommended Questions Attachment of spermatozoa on the surface of the corona radiate., Conversion of the primary oocyte into the secondary oocyte.... 4 Edit Delete
15540 Extra embryonic membranes of mammalian embryo are derived from: 6 611 Recommended Questions Inner cell mass, Formative cells... 3 Edit Delete
15539 Select the mismatch. 6 611 Recommended Questions Liquor folliculi – Fluid filled in antrum, Follicular atresia – Regression of follicles in ovary... 4 Edit Delete
15538 Chorionic Villi will appear after implantation over 6 611 Recommended Questions Trophoblast, Uterine tissue... 1 Edit Delete
15537 Which of the following event does not occur after implantation? (a) Appearance of germinal layers (b) Formation of chorionic villi (c) Secretion of HCG (d) Formation of trophoblast and inner cell mass 6 611 Recommended Questions a, d, c,d... 3 Edit Delete
15536 The stem cells which have potency to give rise to all tissues and organs are formed from 6 611 Recommended Questions Trophoblast, Umbilical cord... 3 Edit Delete
15535 The amount of which hormone increases in Pregnancy? 6 611 Recommended Questions Cortisol, Insulin... 1 Edit Delete
15534 Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the right option for the two together: 6 611 Recommended Questions Blastula - End part of fallopian tube, Blastocyst - Uterine wall... 2 Edit Delete
15533 In a human female, the blastocyst: 6 611 Recommended Questions gets implanted into uterus three days after ovulation, gets nutrition from uterine endometrial secretion only after implantation... 3 Edit Delete
15532 Stem cells that are capable of giving rise to all the tissues and organs are present in: 6 611 Recommended Questions Cumulus oophorus of the Graafian follicle, Lutein cells of the corpus luteum... 4 Edit Delete
15531 Which of the following groups of hormones produced in women only during pregnancy? 6 611 Recommended Questions hCG, hPL, relaxin, Estrogen, progesterone, hCG... 1 Edit Delete
15530 Cleavage is: 6 611 Recommended Questions Dissolution of the zona pellucida, A specialized mitotic division in late fetus... 4 Edit Delete
15529 Morula is a solid ball of cells during early embryonic development and consists of: 6 611 Recommended Questions 4 – 8 cells, 8 – 16 cells... 2 Edit Delete
15528 Which set is similar: 6 611 Recommended Questions Corpus luteum – Graafian follicles, Sebum-sweat... 1 Edit Delete
15527 Which of the following statement is incorrect about menstrual cycle? 1. LH Surge causes ovulation at the mid of the menstrual cycle 2. Corpus luteum is formed by graafian follicle on the next day of ovulation under the influence of progesterone 3. Abrupt fall in progesterone is the instant cause of menstruation 4. Corpus luteum remains active about 10-12 days in a normal menstruating female 6 611 Recommended Questions LH Surge causes ovulation at the mid of the menstrual cycle, Corpus luteum is formed by graafian follicle on the next day of ovulation under the influence of progesterone... 2 Edit Delete
15526 Which peak of Estrogen is wider and blunt during a standard menstrual cycle? 6 611 Recommended Questions ovulatory peak, Pre ovulatory peak... 3 Edit Delete
15525 Identify the hormones that are secreted in large amount prior to ovulation: 6 611 Recommended Questions A only, A & B only... 3 Edit Delete
15524 Which of the following is secreted only during the luteal phase of a menstrual cycle? 6 611 Recommended Questions LH, FSH... 4 Edit Delete
15523 Which of the following is true for luteal phase? 6 611 Recommended Questions FSH stimulates follicular growth, LH causes cells of ruptured follicle to form corpus luteum... 2 Edit Delete
15522 In each of the boxes shown in the figure write the name of the hormone, or hormones controlling the stage in the human menstrual cycle. 6 611 Recommended Questions (i) FSH, (ii) LH, (iii) LH, (iv) Estrogen, (v) Progesterone, (i) LH, (ii) FSH, (iii) LH, (iv) Estrogen, (v) Progesterone... 1 Edit Delete
15521 Which is a true statement about luteinizing hormone in the female reproductive system? 6 611 Recommended Questions It inhibits ovulation., It causes mitosis of the primary oocyte.... 4 Edit Delete
15520 No new follicles develop in the luteal phase of the menstrual cycle because: 6 611 Recommended Questions Follicles do not remain in the ovary after ovulation, FSH levels are high in the luteal phase... 4 Edit Delete
15519 Which of the following statements is correct regarding menstrual cycle? 6 611 Recommended Questions LH induces rupturing of Graafian follicle., Proliferative phase is characterised by the increased production of progesterone.... 1 Edit Delete
15518 Menstruation is triggered by an abrupt decline in the amount of: 6 611 Recommended Questions Estrogen, Progesterone... 2 Edit Delete
15517 Which of the following hormones show peak solely in post ovulatory phase? 6 611 Recommended Questions Progesterone, Estrogen... 1 Edit Delete
15516 In the absence of fertilization, corpus luteum: 6 611 Recommended Questions Stops secreting progesterone but increases the secretion of estrogen, Stops secreting estrogen but increases the secretion of progesterone... 4 Edit Delete
15515 Identify the incorrectly matched pair: 6 611 Recommended Questions Ovulation - LH surge, Follicular phase of menstrual cycle - Regeneration of endometrium... 3 Edit Delete
15514 Which one of the following statements is incorrect about menstrual cycle? 6 611 Recommended Questions The first menstruation begins at puberty and is called menarche, Lack of menstruation may also occur due to some environmental factors like stress, poor health... 4 Edit Delete
15513 Which one of the following statements is incorrect about menstrual cycle? 6 611 Recommended Questions The first menstruation begins at puberty and is called menarche, Lack of menstruation may also occur due to some environmental factors like stress, poor health... 4 Edit Delete
15512 During pregnancy: 6 611 Recommended Questions All events of menstrual cycle stop and there is no menstruation, Events of menstrual cycle continue but there is no menstruation... 1 Edit Delete
15511 The main cause of the disintegration of the endometrial lining 6 611 Recommended Questions LH surge, Degeneration of corpus luteum... 2 Edit Delete
15510 Withdrawal of which of the following hormones is the immediate cause of menstruation? 6 611 Recommended Questions Estrogen, FSH... 4 Edit Delete
15509 The main function of mammalian corpus luteum is to produce 6 611 Recommended Questions estrogen only, progesterone... 2 Edit Delete
15508 Which of the following is very close to the time of ovulation? 6 611 Recommended Questions Peak of progesterone., Minimum level of estrogen.... 3 Edit Delete
15507 Which of the following pituitary hormones will have more amount on 29th day of standard menstrual cycle? 6 611 Recommended Questions LH, FSH... 2 Edit Delete
15506 Which hormone is mainly secreted by the developing follicles during the proliferative phase of the menstrual cycle? 6 611 Recommended Questions LH, FSH... 4 Edit Delete
15505 An oocyte is released from the ovary under the influence of LH 6 611 Recommended Questions After completing meiosis and before polar body are released, After completing meiosis I and before release of polar body... 4 Edit Delete
15504 How many of the following statements are true regarding follicle stimulating hormone? (i) FSH secreted by anterior pituitary cells, is called gonadotropin (ii) Its target organs are the ovaries and testes (iii) In the ovaries, it stimulates the secretion of ovarian hormones (iv) In the testes, it stimulates the production of sperm 6 611 Recommended Questions Only (i), (ii), (iii), Only (ii), (iii), (iv)... 3 Edit Delete
15503 The primary oocyte completes the first meiotic division at the stage of: 6 611 Recommended Questions Primordial follicle, Primary follicle... 4 Edit Delete
15502 Ovulation in the human female normally takes place during which phase of the menstrual cycle: 6 611 Recommended Questions Just before the end of the secretory cycle., At the beginning of the proliferative phase.... 3 Edit Delete
15501 Which of the following occur during pre ovulatory phase? 6 611 Recommended Questions d & e only, a, b & c only... 1 Edit Delete
15500 The shedding of endometrium during menstruation occurs due to decline in concentration of 6 611 Recommended Questions Estrogen, Progesterone... 2 Edit Delete
15499 The secretory phase in the human menstrual cycle is also called 6 611 Recommended Questions Luteal phase and lasts for about 13 days., Follicular phase and lasts for about 13 days.... 1 Edit Delete
15498 During menstrual phase, the sanitary napkins should be changed (if flow amount is according to standard cycle) 6 611 Recommended Questions 4-5 hrs, 7-8 hrs... 1 Edit Delete
15497 What happens to the majority of the follicles during the phase from birth to puberty? 6 611 Recommended Questions They get invested by multiple layers of granulosa cells, They enlarge in size and then get dormant... 3 Edit Delete
15496 The menstrual flow results due to the breakdown of the glandular layer that lines the uterine cavity. This inner layer is 6 611 Recommended Questions Perimetrium, Endometrium... 2 Edit Delete
15495 In human females menstrual cycle is repeated is after around 6 611 Recommended Questions 28/29 days, 30 days... 1 Edit Delete
15494 In the process of oogenesis, a polar body: I. is formed before fertilization. II. is formed after fertilization. III. normally receives most of the cytoplasm of the cell. 6 611 Recommended Questions Only I is correct, Only II is correct... 1 Edit Delete
15493 Oogenesis starts at 6 611 Recommended Questions Embryonic Development stage, At the time, when four million oogonia are formed in female foetus... 1 Edit Delete
15492 What is released at ovulation? 6 611 Recommended Questions Primary oocyte arrested at meiosis I, Primary oocyte arrested at meiosis II... 4 Edit Delete
15491 Secondary oocyte is formed 6 611 Recommended Questions At puberty, At the time of birth... 1 Edit Delete
15490 Arrested stage called Primary oocyte is formed 6 611 Recommended Questions During foetal Growth, At the time of birth... 1 Edit Delete
15489 Mark the incorrect match 6 611 Recommended Questions Fimbriae - Collection of ovum after ovulation., Endometrium - Undergoes cyclic changes during menstrual cycle.... 4 Edit Delete
15488 Which of the following takes maximum duration for its completion? 6 611 Recommended Questions Meiosis I in primary oocyte., Formation of haploid spermatozoa.... 1 Edit Delete
15487 Fluid filled cavity is a characteristic feature of 6 611 Recommended Questions Graafian Follicle, Tertiary Follicle... 2 Edit Delete
15486 Primary follicles are formed 6 611 Recommended Questions During foetal Growth, At the time of birth... 1 Edit Delete
15485 The result of meiosis I in females for oogenesis will be 6 611 Recommended Questions Secondary Oocyte, Ovum... 1 Edit Delete
15484 Identify the incorrect statement regarding female reproductive system? 6 611 Recommended Questions The first meiotic division of a primary oocyte forms two secondary oocytes that remain in this stage unless fertilization occurs., Uterine tube, fallopian tube, and oviduct are terms used to refer to the same organ.... 1 Edit Delete
15483 Which statement about human reproduction is false? 6 611 Recommended Questions Fertilization occurs in the oviduct, An oocyte completes meiosis after a sperm penetrates it... 4 Edit Delete
15482 In oogenesis, when a diploid cell undergoes meiosis, how many ova result? 6 611 Recommended Questions 1, 2... 1 Edit Delete
15481 Ootid is formed along with 6 611 Recommended Questions Ovum, Second polar body... 2 Edit Delete
15480 The division of primary oocyte results in: 6 611 Recommended Questions unequal cells a smaller haploid secondary oocyte and a larger diploid polar body, unequal cells a larger haploid secondary oocyte and a smaller haploid polar body... 2 Edit Delete
15479 Each Ovary is connected to the pelvic wall and the uterus by: 6 611 Recommended Questions Peritoneum, Adipose tissue... 3 Edit Delete
15478 Refer to the given figure and choose the correct option regarding its parts labelled as A-F. 6 611 Recommended Questions B-Graafian follicle, F-Corpus luteum, C-Graafian follicle, A-Ovum... 3 Edit Delete
15477 Oogenesis differs from spermatogenesis in a number of aspects. One of the following is however a similarity between the two 6 611 Recommended Questions Growth phase is prolonged in both of them and starts before birth, Both give rise to non-motile gametes... 4 Edit Delete
15476 Oogenesis differs from spermatogenesis in a number of aspects. One of the following is however a similarity between the two 6 611 Recommended Questions Growth phase is prolonged in both of them and starts before birth, Both give rise to non-motile gametes... 4 Edit Delete
15475 At the birth of the female child, the follicles in her ovaries contain: 6 611 Recommended Questions Primary oocytes that have been arrested at the S phase of the cell cycle, Primary oocytes that have been arrested at the Prophase I of Meiosis I... 2 Edit Delete
15474 Ovaries are the primary sex organs in human females because they: I. Produce the female gamete II. Produce the hormone that regulates the development of secondary sexual characters 6 611 Recommended Questions Both I and II, Only I... 1 Edit Delete
15473 At puberty, how many primary follicles are there in each ovary in a female? 6 611 Recommended Questions 60000-80000, 120000-160000... 1 Edit Delete
15472 The figure below shows the development of follicles (A, B, C, D). Select the option giving correct identification together with its function? 6 611 Recommended Questions B-Secondary Follicle - secretes progesterone, D-Corpus Albicans - Secretes estrogen... 4 Edit Delete
15471 The human sperms are 6 611 Recommended Questions 200-300 million in number, Exact 60% with normal shape and size... 1 Edit Delete
15470 Suppose a man has 200 million sperms in an ejaculate and he is fertile. Opt a correct option. 6 611 Recommended Questions 125 million sperm with normal shape and size, 30 million with vigorous motility... 1 Edit Delete
15469 Mark the incorrect match (i) All spermatocytes have haploid structure. (ii) All of the spermatogonia changes into primary spermatocyte. (iii) FSH is required for the process of spermiogenesis. (iv) Seminal plasma is essential for maturation and motility of sperms. 6 611 Recommended Questions (i), (ii), (iii), (iv), (iii) and (iv) only... 3 Edit Delete
15468 During coitus the human male ejaculates about 6 611 Recommended Questions 200 to 400 million sperms, 100 to 200 million sperms... 1 Edit Delete
15467 For normal fertility what percent of the sperm in ejaculation must exhibit vigorous motility? 6 611 Recommended Questions 20, 30... 3 Edit Delete
15466 Seminal plasma is rich in: 6 611 Recommended Questions Sucrose, calcium and certain enzyme, Glucose, sodium and certain enzymes... 3 Edit Delete
15465 Seminal plasma of humans is rich in 6 611 Recommended Questions Fructose and certain enzymes, poor in Ca²⁺., Fructose, Ca²⁺ and certain enzymes.... 2 Edit Delete
15464 Which of the following duct is present outside the testis? (i) Rete testis (ii) Vasa efferentia (iii) Vas deferens (iv) Epididymis 6 611 Recommended Questions (i), (ii), (iii), (iv), (iii) and (iv) only... 2 Edit Delete
15463 Which human male accessory reproductive duct receives a duct from the seminal vesicle? 6 611 Recommended Questions Rete testis, Vas deferens... 2 Edit Delete
15462 Secretions of ………… seminal vesicle and prostate are essential for maturation and motility of sperm. 6 611 Recommended Questions Epididymis, Vas deferens... 3 Edit Delete
15461 Vasa efferentia are the ductules leading from 6 611 Recommended Questions testicular lobules to rete testis, rete testis to vas deferens... 2 Edit Delete
15460 If for some reason, the vasa efferentia in the human reproductive system get blocked, the gametes will not be transported from: 6 611 Recommended Questions epididymis to vas deferens, ovary to uterus... 4 Edit Delete
15459 The functions of male sex accessory ducts and glands are maintained by: 6 611 Recommended Questions Hypothalamic releasing hormone, Pituitary gonadotropins... 4 Edit Delete
15458 Which of the following ascends to abdomen? 6 611 Recommended Questions Epididymis, Vas Deferens... 2 Edit Delete
15457 Which of the following structures loop over urinary bladder? 6 611 Recommended Questions Epididymis, Vas Deferens... 2 Edit Delete
15456 Which of the structures shown in the following diagram contributes to the source of nutrition for the sperms ejaculated in the semen? 6 611 Recommended Questions A, B... 1 Edit Delete
15455 If vas deferens in human male reproductive system is blocked, then transport of sperms will be blocked from 6 611 Recommended Questions Rete testis to epididymis, Vasa efferentia to epididymis... 4 Edit Delete
15454 Select the correct sequence for the transport of sperm cells in the male reproductive system: 6 611 Recommended Questions Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → Urethral meatus, Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra... 3 Edit Delete
15453 The seminiferous tubules of the testis open into Vasa efferentia through....... 6 611 Recommended Questions Rete Testis, Vas Deferens... 1 Edit Delete
15452 The male sex accessory ducts do not include- 6 611 Recommended Questions Rete testis, Vasa efferentia... 4 Edit Delete
15451 Secretions from which one of the following are rich in fructose, calcium and some enzymes: 6 611 Recommended Questions Liver, Pancreas... 4 Edit Delete
15450 Sperm motility is facilitated by 6 611 Recommended Questions Middle piece, Neck... 3 Edit Delete
15449 How many sperms are formed from a secondary spermatocyte? 6 611 Recommended Questions 4, 8... 3 Edit Delete
15448 Which one of the following statements about human sperm is correct? 6 611 Recommended Questions Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilization, The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilization... 2 Edit Delete
15447 Mark the incorrect match that is not related? 6 611 Recommended Questions Sertoli cell - Spermiation, Spermatid - Spermiogenesis... 3 Edit Delete
15446 The functions of male sex accessory ducts and glands are maintained by 6 611 Recommended Questions GnRH, LH... 4 Edit Delete
15445 In humans, at the end of the first meiotic division, the male germ cells differentiate into the: 6 611 Recommended Questions primary spermatocytes, secondary spermatocytes... 2 Edit Delete
15444 The spermatids are transformed into spermatozoa by the process called: 6 611 Recommended Questions Spermiation, Spermatocytogenesis... 3 Edit Delete
15443 The difference between spermiogenesis and spermiation is? 6 611 Recommended Questions In spermiogenesis, spermatids are formed, while in spermiation, spermatozoa are formed., In spermiogenesis, spermatozoa are formed, while in spermiation, spermatids are formed.... 4 Edit Delete
15442 Spermiation is 6 611 Recommended Questions Release of sperms from seminiferous tubules, Release of secondary spermatocyte from seminiferous tubules... 1 Edit Delete
15441 The final release of sperms from the seminiferous tubules is called: 6 611 Recommended Questions Spermiation, Emission... 1 Edit Delete
15440 Which of the following depicts the correct pathway of transport of sperms? 6 611 Recommended Questions Rete testis → Efferent ductules → Epididymis → vas deferens, Rete testis → Epididymis → Efferent ductules → vas deference... 1 Edit Delete
15439 Which of the following does not have 46 chromosomes? 6 611 Recommended Questions Spermatogonia, Primary Spermatocyte... 3 Edit Delete
15438 The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is 6 611 Recommended Questions spermatocyte - spermatogonia - spermatid - sperms, spermatogonia - spermatocyte - spermatid - sperms... 2 Edit Delete
15437 Which of the following cell will undergo meiosis? 6 611 Recommended Questions Sertoli cells, Spermatogonia... 2 Edit Delete
15436 Acrosome is 6 611 Recommended Questions Part of sperm head, Caps the anterior portion of haploid nucleus... 4 Edit Delete
15435 Given below is the structure of sperm of the human male. Identify the structure 'X' and choose the option representing the correct description/function of X. 6 611 Recommended Questions Contains chromosomal material, Provides energy source for swimming... 2 Edit Delete
15434 The structure of testis of a mammal can be identified by the presence of 6 611 Recommended Questions Spermatogonia, Spermatocytes... 3 Edit Delete
15433 Each seminiferous tubule is lined on its inside by: 6 611 Recommended Questions Spermatogonia, Primary spermatocytes... 4 Edit Delete
15432 The level of which hormone gets increased first and stimulate spermatogenesis at puberty? 6 611 Recommended Questions GnRH, Testosterone... 1 Edit Delete
15431 Leydig cells: 6 611 Recommended Questions Are present in seminiferous tubules and secrete androgens, Are present in seminiferous tubules and help in maturation of sperms... 3 Edit Delete
15430 Which of the following cell completes the first meiotic division leading to the formation of two equal, haploid cells? 6 611 Recommended Questions Spermatogonium, Primary spermatocytes... 2 Edit Delete
15429 Which of the following cells during gametogenesis is normally diploid? 6 611 Recommended Questions Primary polar body, Spermatid... 3 Edit Delete
15428 Which of the following is wrong? 6 611 Recommended Questions Spermatogonia and leydig cells are present in seminiferous tubules, Small blood vessels are present along with Leydig cells... 1 Edit Delete
15427 Arrange the following process starting from the germ cells of seminiferous tubule? (i) Meiotic division in secondary spermatocytes. (ii) Spermiation. (iii) Spermiogenesis. (iv) Capacitation. 6 611 Recommended Questions (i), (ii), (iii), (iv), (i), (iii), (ii), (iv)... 2 Edit Delete
15426 FSH: 6 611 Recommended Questions Acts on Sertoli cells and stimulates secretion of some factors that help in spermiogenesis, Acts on Sertoli cells and inhibits secretion of some factors that help in spermiogenesis... 1 Edit Delete
15425 In the vertebrates testes, for nourishment during spermiogenesis, the spermatids get attached to 6 611 Recommended Questions Interstitial cells, Sperm-mother cells... 4 Edit Delete
15424 Sertoli cells are found in 6 611 Recommended Questions ovaries and secrete progesterone, adrenal cortex and secrete adrenalin... 3 Edit Delete
15423 How many seminiferous tubules will be there per testicular lobule? 6 611 Recommended Questions 1 to 3, 500... 1 Edit Delete
15422 Leydig cells are present in 6 611 Recommended Questions Seminiferous tubules, Outside seminiferous tubules... 2 Edit Delete
15421 Find the incorrect statement 6 611 Recommended Questions scrotum helps in maintaining low temperature of the testes 2-2.5 degrees C less than normal, necessary for spermatogenesis, Each testis has about 250 testicular lobules... 4 Edit Delete
15420 Each testis in humans is covered by a dense connective tissue covering and has about _____ compartments 6 611 Recommended Questions 2, 25... 3 Edit Delete
15419 It is a diagrammatic sectional view of male reproductive system, in which identify the ejaculatory duct: 6 611 Recommended Questions A, B... 2 Edit Delete
15418 Epididymis is located in....of testis. 6 611 Recommended Questions Anterior surface, Posterior surface... 2 Edit Delete
15417 Male reproductive system of humans has not 6 611 Recommended Questions A testis only, Accessory Ducts... 1 Edit Delete
15416 Given below is a diagrammatic sketch of a portion of human male reproductive system. Select the correct set of the names of the parts labelled A, B, C, D: 6 611 Recommended Questions Ureter Prostate Seminal vesicle Bulbourethral gland, Vas deferens Seminal vesicle Prostate Bulbourethral gland... 2 Edit Delete
15415 What is not correct with respect to testis in adults? 6 611 Recommended Questions Spherical in shape, 4-5 cm in length and width of 2-3 cm... 1 Edit Delete
15414 Testes of humans are located in 6 611 Recommended Questions Inside abdominal cavity, Within a tunnel like structure... 3 Edit Delete
15413 Which of the following is not a part of male external genitalia? 6 611 Recommended Questions Glans Penis, Foreskin... 4 Edit Delete
15412 Suppose the internal temperature of body is 36.5 degree celsius now what will be the temperature required for human spermatogenesis? 6 611 Recommended Questions 34.2 degree Celsius, 33 degree Celsius... 1 Edit Delete
15411 The testes are situated outside the abdominal cavity within a pouch called scrotum. This is necessary as: 6 611 Recommended Questions The scrotum can contain lengthy ducts for the transfer of sperms, Scrotum helps in maintaining the low temperature of the testes necessary for spermatogenesis... 2 Edit Delete
15410 Scrotum helps in maintaining the temperature of the testes which is A lower than the normal body temperature. Each testis has about B compartments called testicular lobules. Select the option that fills the blanks correctly. 6 611 Recommended Questions 1-3°C 300, 2-2.5°C 250... 2 Edit Delete
15409 The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for 6 611 Recommended Questions escaping any possible compression by the visceral organs, providing more space for the growth of epididymis... 4 Edit Delete
15408 In the male human being, sperms contain autosomes and 6 611 Recommended Questions Only one Y-chromosome, Only one X-chromosome... 4 Edit Delete
15407 In humans, the sex of the baby is determined: 6 611 Recommended Questions At the time of fertilization and by the father, At the time of fertilization and by the mother... 1 Edit Delete
15406 Humans are 6 611 Recommended Questions Oviparous females, Sexually Reproducing... 2 Edit Delete
15405 Which of the following is not correct with respect to Human reproduction? 6 611 Recommended Questions There is remarkable similarity between the reproductive events of males and females, Continuation of sperm formation in old man... 1 Edit Delete
15404 Which of the following order is not correct for the events of human reproduction? 6 611 Recommended Questions Gametogenesis- Insemination- Fertilization, Fertilization-Insemination- Gametogenesis... 2 Edit Delete
15166 Which of the following is true about Pancreas 6 610 Recommended Questions Heterocrine gland, Composite gland... 4 Edit Delete
15165 Glucagon and insulin hormone can be distinguished based on 6 610 Recommended Questions Location of receptors i.e. intracellular or extracellular, Their source gland... 4 Edit Delete
15164 Which of the following acts on the endocrine part of the pancreas? 6 610 Recommended Questions Gastrin, Secretin... 4 Edit Delete
15163 Identify the hormone: I. It favors glycogenesis II. It favors fat synthesis and deposition III. It favors protein anabolism 6 610 Recommended Questions Cortisol, Insulin... 2 Edit Delete
15162 The condition of prolonged hyperglycemia leads to 6 610 Recommended Questions Diabetes Insipidus, Diabetes mellitus... 4 Edit Delete
15161 Which of the following hormone is responsible for hypoglycemia 6 610 Recommended Questions Insulin, Glucagon... 1 Edit Delete
15160 Match the following columns and select the correct option: Column I (a) Pituitary gland (b) Thyroid gland (c) Adrenal gland (d) Pancreas Column II (i) Grave's disease (ii) Diabetes mellitus (iii) Diabetes insipidus (iv) Addison's disease 6 610 Recommended Questions (iii) (ii) (i) (iv), (iii) (i) (iv) (ii)... 2 Edit Delete
15159 Which one of the following pairs is incorrectly matched? 6 610 Recommended Questions Glucagon - Beta cells (source), Somatostatin - Delta cells (source)... 1 Edit Delete
15158 Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilisation. 6 610 Recommended Questions Insulin, Glucagon... 1 Edit Delete
15157 Which of the following is true about Islet of Langerhans 6 610 Recommended Questions Known as exocrine pancreas, 1 to 2% of the pancreatic tissue... 2 Edit Delete
15156 Which of the following hormones is incorrectly paired with its action? 6 610 Recommended Questions oxytocin–stimulates uterine contractions during childbirth, thyroxine–stimulates metabolic processes... 3 Edit Delete
15155 Which of the following represents the action of insulin? 6 610 Recommended Questions Increases blood glucose level by stimulating glucagon production., Decreases blood glucose level by forming glycogen.... 2 Edit Delete
15154 Which of the following statements regarding glucagon is false? 1. It is secreted by alpha-cells of Langerhans. 2. It acts antagonistically to insulin. 3. It decreases blood sugar level. 4. The gland responsible for its secretion is heterocrine gland 6 610 Recommended Questions It is secreted by alpha-cells of Langerhans., It acts antagonistically to insulin.... 3 Edit Delete
15153 Which of the following is responsible for hyperglycemia 6 610 Recommended Questions Glucagon, Glucocorticoids... 4 Edit Delete
15152 Select the correct statement about hormones and their actions. 6 610 Recommended Questions Parathyroid hormone increases K⁺ absorption of the body., Insulin and glucagon helps to maintain blood sugar levels.... 2 Edit Delete
15151 Given ahead is an incomplete table about certain hormones, their source glands and one major effect of each on the body in humans. Identify the correct option for the three blanks A, B and C. 6 610 Recommended Questions Placenta Insulin Vasopressin, Ovary Insulin Calcitonin... 4 Edit Delete
15150 The glucose homeostasis in blood is maintained by 6 610 Recommended Questions Insulin, Glucagons... 3 Edit Delete
15149 How many of the following organised endocrine glands are present in males? Pancreas, Thymus, Adrenal, Testes, Kidney, GIT, Heart, Ovary, Pituitary, Thyroid 6 610 Recommended Questions 10, 7... 3 Edit Delete
15148 Which one of the following statements is correct? 6 610 Recommended Questions Neurons regulate endocrine activity, but not vice versa., Endocrine glands regulate neural activity, and nervous system regulates endocrine glands.... 2 Edit Delete
15147 Which of the following is true about Endocrine system 6 610 Recommended Questions It is not directly connected with organs, Response is slow... 4 Edit Delete
15146 The system which coordinate and regulate the physiological functions in the body is 6 610 Recommended Questions Nervous System and Excretory system, Endocrine System and Circulatory system... 3 Edit Delete
15145 Which of the following is true about Endocrine glands 6 610 Recommended Questions Ductless glands, Secretion is hormones... 4 Edit Delete
15144 Which of the following is true about neural system 6 610 Recommended Questions It provides point to point rapid coordination among organs, Coordination is fast and short lived... 4 Edit Delete
15143 Contraction in gall bladder is stimulated by: 6 610 Recommended Questions CCK, PZ... 1 Edit Delete
15142 Which of the following hormone is secreted from the intestinal mucosa and stimulates the release of enzymes in the pancreatic juice? 6 610 Recommended Questions Secretin, Cholecystokinin... 2 Edit Delete
15141 Match the following Column I (A) GIP (B) Secretin (C) Cholecystokinin (D) Duocrinin Column II (i) ↑ Crypts of Lieberkuhn (ii) ↑ HCO₃⁻ secretion in pancreatic juice (iii) ↑ Brunner's gland secretion (iv) ↑ Gastric juice secretion (v) ↓ Gastric juice secretion (vi) ↑ Contraction of gall bladder 6 610 Recommended Questions (v) (ii) (vi) (iii), (ii) (v) (iii) (vi)... 1 Edit Delete
15140 Find out the correct match from the following table: Column-I Column-II Column-III (i) Heart Atrial natriuretic factor Decreases blood pressure (ii) Kidney Erythropoietin Formation of RBC (iii) Gastro-intestinal tract Gastrin Induces gastric secretion 6 610 Recommended Questions (ii) and (iii), (i) and (iii)... 4 Edit Delete
15139 Which hormones do stimulate the production of pancreatic juice and bicarbonate? 6 610 Recommended Questions Angiotensin and epinephrine, Gastrin and insulin... 3 Edit Delete
15138 A peptide hormone which causes dilation of blood vessels and decreases blood pressure is 6 610 Recommended Questions Aldosterone, Adrenaline... 4 Edit Delete
15137 Diseases caused due to insufficiency of hormones include all except 6 610 Recommended Questions Cushing's disease, Addison's disease... 1 Edit Delete
15136 Which of the following hormone is secreted by the adrenal cortex? 6 610 Recommended Questions Adrenaline, Non- adrenaline... 4 Edit Delete
15135 Which of the following is incorrect about glucocorticoids 6 610 Recommended Questions stimulate cellular uptake and utilization of amino acids, suppresses the immune response... 1 Edit Delete
15134 Which of the following hormone stimulates Gluconeogenesis 6 610 Recommended Questions Glucagon, Glucocorticoids... 4 Edit Delete
15133 Which of the following is responsible for the growth of axial hair, facial hair during puberty in females? 6 610 Recommended Questions Androgens, Aldosterone... 1 Edit Delete
15132 Which of the following is the inner layer of the adrenal cortex? 6 610 Recommended Questions Zona glomerulosa, Zona reticularis... 2 Edit Delete
15131 Which of the following is incorrect about the adrenal gland 6 610 Recommended Questions Located on the posterior part of the kidney, located on anterior part of the kidney... 1 Edit Delete
15130 Which one influences the activity of the kidney? 6 610 Recommended Questions Vasopressin, Thyroxine... 3 Edit Delete
15129 Which of the following is the outermost layer of the adrenal cortex? 6 610 Recommended Questions Zona glomerulosa, Zona reticularis... 1 Edit Delete
15128 Which of the following is maintained by aldosterone 6 610 Recommended Questions Body fluid volume, Osmotic pressure... 4 Edit Delete
15127 Chemically hormones are: 6 610 Recommended Questions Proteins, steroids & biogenic amines, Proteins only... 1 Edit Delete
15126 How many of these hormones will interact with the membrane-bound receptor? Thyroxin, epinephrine, progesterone, relaxin, estrogen: 6 610 Recommended Questions Three, Two... 2 Edit Delete
15125 Extracellular receptors must be required for the action of: 6 610 Recommended Questions I, II, III & IV, I, IV only... 3 Edit Delete
15124 What is correct for the hormone whose mechanism of action is shown in the given diagram? 6 610 Recommended Questions This hormone will most likely be synthesized by the neural cells of the hypothalamus, This hormone cannot be thyroxin or triiodothyronine... 3 Edit Delete
15123 Some hormones can act on their target cells through second messengers. Identify the one that does not: 6 610 Recommended Questions cortisol, adrenaline... 1 Edit Delete
15122 The biomolecule that cannot act as a chemical messenger [hormone] is: 6 610 Recommended Questions Proteins, Steroids... 4 Edit Delete
15121 A hormone that has intracellular receptors would be 6 610 Recommended Questions ACTH, ADH... 4 Edit Delete
15120 Which of the following set of hormones can easily pass through the cell membrane of a target cell and bind to specific intracellular receptors? 6 610 Recommended Questions b&c, a,b&c... 4 Edit Delete
15119 How many of the following hormones don't enter the target cell? Cortisol, Iodothyronine, Testosterone, Estradiol, FSH, Insulin, Glucagon 6 610 Recommended Questions 4, 7... 3 Edit Delete
15118 Identify A, B and C in the diagrammatic representation of the mechanism of hormone action. 6 610 Recommended Questions A = Steroid Hormone; B = Hormone receptor Complex; C = Protein, A = Protein Hormone; B = Receptor; C = Cyclic AMP... 2 Edit Delete
15117 Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)? 6 610 Recommended Questions Insulin and glucagon, Thyroxin and insulin... 4 Edit Delete
15116 Which of the following is an incorrect statement 6 610 Recommended Questions Hormones bind to specific proteins located in the target tissues only., Receptors for hormones can only be present on the cell membrane... 2 Edit Delete
15115 Incorrect match with respect to hormone and its chemical nature is 6 610 Recommended Questions Cortisol – Steroidal, Thyroxine – Iodothyronine... 3 Edit Delete
15114 Besides cAMP, which one of the following molecules acts as a 'secondary messenger' in the biological system? 6 610 Recommended Questions Ca²⁺, ATP... 1 Edit Delete
15113 The binding of a hormone to its receptor leads to 6 610 Recommended Questions formation of the hormone-receptor complex, leads to biochemical changes in the target tissue... 4 Edit Delete
15112 Which set includes hormones that are involved in carbohydrate metabolism? 6 610 Recommended Questions Insulin, glucagon, epinephrine, calcitonin, Insulin, glucagon, epinephrine, cortisol... 2 Edit Delete
15111 Spermatogenesis takes place in 6 610 Recommended Questions Interstitial cells, Leydig cells... 4 Edit Delete
15110 Which of the following hormone induce ovulation and maintains corpus luteum? 6 610 Recommended Questions FSH, LH... 2 Edit Delete
15109 Androgens are secreted by 6 610 Recommended Questions Interstitial cells, Seminiferous tubules... 4 Edit Delete
15108 Which of the following hormone is called pregnancy hormone 6 610 Recommended Questions Estrogen, Progesterone... 2 Edit Delete
15107 The development of secondary sexual characters in females is primarily controlled by: 6 610 Recommended Questions Estrogen, Progesterone... 1 Edit Delete
15106 Which of the following is not true about testosterone 6 610 Recommended Questions stimulates spermatogenesis, influence libido... 3 Edit Delete
15105 Which of the following is true about progesterone 6 610 Recommended Questions Supports pregnancy, Stimulates the formation of alveoli in breast... 4 Edit Delete
15104 Which of the following is an ovarian hormone 6 610 Recommended Questions estrogen, Progesterone... 4 Edit Delete
15103 Which of the following is a temporary endocrine gland in the human body? 6 610 Recommended Questions pineal gland, corpus cardiacum... 3 Edit Delete
15102 Which of the following is true about testosterone 6 610 Recommended Questions regulate accessory sex organs development, stimulate muscular growth... 4 Edit Delete
15101 Which of the following is true about estrogen 6 610 Recommended Questions responsible for high pitch of voice, regulate female sexual behaviour... 4 Edit Delete
15100 Choose the incorrect statement 6 610 Recommended Questions Thyroxine deficiency in adults causes Myxedema, PTH and TCT are responsible for maintaining the blood calcium level... 4 Edit Delete
15099 Identify the incorrect match: 6 610 Recommended Questions Gastrin - Stomach - Stimulates gastric secretion, GIP - Duodenum - Inhibits gastric secretion... 3 Edit Delete
15098 The hormones from the heart, kidney, and gastrointestinal tract respectively are: 6 610 Recommended Questions ANF, Rennin, Trypsin, ADH, Renin, GIP... 3 Edit Delete
15097 Which of the following stimulates the secretion of HCl and pepsinogen? 6 610 Recommended Questions Gastrin, Secretin... 1 Edit Delete
15096 Which of the following inhibits gastric secretion? 6 610 Recommended Questions Gastrin, Secretin... 4 Edit Delete
15095 Select the true statement(s): A. Growth factors are hormones secreted by several non-endocrine tissues. B. Estradiol is synthesised and secreted mainly by growing ovarian follicles. C. Catecholamines stimulate the breakdown of glycogen. D. Adrenal cortex secretes androgen like hormone. 6 610 Recommended Questions B & C, A, C & D... 3 Edit Delete
15094 Consider the following four statements (a-d) and select the option which includes all the correct ones only. (a) Pineal gland is situated on the ventral side of forebrain. (b) Corpus luteum is formed after ovulation and its formation is induced by LH. (c) In female, oxytocin stimulates contraction of uterus at the time of childbirth and milk ejection from mammary body. (d) Pituitary gland is located in a bony cavity called sella turcica. 6 610 Recommended Questions Statements (a), (b) and (d), Statements (b) or (d)... 4 Edit Delete
15093 Which of the following is the effect of the hormone secreted by the Heart? 6 610 Recommended Questions Dilation of blood vessels, Decrease blood pressure... 3 Edit Delete
15092 The atrial wall of our heart secretes a very important peptide hormone called_____, which_____ because it causes dilation of the blood vessels. Choose the option which correctly fills the blank. 6 610 Recommended Questions Rennin, increases the blood pressure, Angiotensinogen, decreases the blood pressure... 4 Edit Delete
15091 Which one of the following four glands is correctly matched with the accompanying description? 6 610 Recommended Questions Thyroid - hyperactivity in young children causes cretinism, Thymus - starts undergoing atrophy after puberty... 2 Edit Delete
15090 Which of the following hormone is responsible for humoral immunity? 6 610 Recommended Questions Thyroxine, Antibodies... 3 Edit Delete
15089 Which of the following is incorrect about thymus gland 6 610 Recommended Questions lobular in structure, located on ventral side of heart and aorta... 2 Edit Delete
15088 The immune responses in older people are weak due to the degeneration of: 6 610 Recommended Questions Thyroid, Pineal... 4 Edit Delete
15087 Which of the following hormone is responsible for cell mediated immunity? 6 610 Recommended Questions Thyroxine, adrenaline... 3 Edit Delete
15086 A gland called 'Clock of ageing' that gradually reduces and degenerates in ageing is 6 610 Recommended Questions thyroid, thymus... 2 Edit Delete
15085 Poor immunity of old people is because of the absence of which gland 6 610 Recommended Questions Pineal gland, Thymus... 2 Edit Delete
15084 Artificial light, extended work-time and reduced sleep-time disrupt the activity of: 6 610 Recommended Questions Thymus gland, Pineal gland... 2 Edit Delete
15083 Which of the following endocrine gland secretes melatonin 6 610 Recommended Questions Pituitary gland, Pineal gland... 2 Edit Delete
15082 Which of the following is true about melatonin? 6 610 Recommended Questions It influences metabolism, It influences pigmentation... 4 Edit Delete
15081 Which of the following hormone regulates sleep-wake cycle? 6 610 Recommended Questions Melatonin, Thyroxine... 1 Edit Delete
15080 Identify the incorrectly matched pair: 6 610 Recommended Questions Growth hormone - Increases blood glucose level, Thyroxin - Supports erythropoiesis... 3 Edit Delete
15079 Sugar metabolisms, sex corticoids, salt retaining & stress management hormones releases from: 6 610 Recommended Questions Only A, Only B... 3 Edit Delete
15078 A person with Addison disease __________. 6 610 Recommended Questions is unable to replenish blood glucose levels under stressful conditions, develops dramatically more male features... 1 Edit Delete
15077 Glucocorticoids do not: 1. Stimulate gluconeogenesis 2. Cause lipolysis 3. Cause proteolysis 4. Stimulate cellular uptake and utilization of amino acids 6 610 Recommended Questions Stimulate gluconeogenesis, Cause lipolysis... 4 Edit Delete
15076 A corticoid which is responsible for the electrolyte balance in our body is 6 610 Recommended Questions Aldosterone, Adrenaline... 1 Edit Delete
15075 A steroid hormone which regulates glucose metabolism is: 6 610 Recommended Questions cortisol, corticosterone... 1 Edit Delete
15074 Which of the following is true about glucocorticoids 6 610 Recommended Questions Regulate Cardio-vascular and kidney functions, Anti-inflammatory agent... 4 Edit Delete
15073 Adrenaline has a direct effect on: 6 610 Recommended Questions S.A. Node, β-cells of Langerhans... 1 Edit Delete
15072 Which of the following is incorrect about catecholamines 6 610 Recommended Questions increase in glucose concentration blood, stimulate lipids and fats breakdown... 3 Edit Delete
15071 Which hormone causes dilation of blood vessels, increased oxygen consumption and gluco-genesis? 6 610 Recommended Questions ACTH, Insulin... 3 Edit Delete
15070 Injury to adrenal cortex is not likely to affect the secretion of which one of the following? 6 610 Recommended Questions Aldosterone, Both androstenedione and dehydroepiandrosterone... 3 Edit Delete
15069 Select the correct matching of a hormone, its source and its function: 6 610 Recommended Questions Norepinephrine - Adrenal medulla - Increases heartbeat, rate of respiration and alertness, Glucagon - Beta-cells of Islets of Langerhans - Stimulates glycogenolysis... 1 Edit Delete
15068 Catecholamine in a normal person induces 6 610 Recommended Questions intense salivation, alertness... 2 Edit Delete
15067 A rise in a heartbeat, increase in the cardiac output, blood pressure and blood sugar occurs during an emergency, by the hormone 6 610 Recommended Questions Aldosterone, Antidiuretic hormone... 3 Edit Delete
15066 The centrally located tissues of the adrenal gland are called 6 610 Recommended Questions adrenal cortex, Adrenal medulla... 2 Edit Delete
15065 Fight-or-flight reaction cause activation of: 6 610 Recommended Questions the parathyroid glands, leading to increased metabolic rate., the kidney, leading to suppression of the rennin angiotensin-aldosterone pathway.... 3 Edit Delete
15064 Feeling the tremor of an earthquake a scared resident of seventh floor of a multistoried building starts climbing down the stairs rapidly. Which hormone initiated this action? 6 610 Recommended Questions Thyroxine, Adrenaline... 2 Edit Delete
15063 Mary is about to face an interview. But during first five minutes before the interview, she experiences sweating, increased rate of heart beat, respiration etc. Which hormone is responsible for her restlessness? 6 610 Recommended Questions Prostaglandins and Vasopressin, Epinephrine and Cortisol... 3 Edit Delete
15062 Which of the following is true about catecholamines 6 610 Recommended Questions Increase heartbeat, cause goose bumps... 4 Edit Delete
15061 Which of the following is not true about parathyroid hormone? 6 610 Recommended Questions It is a peptide hormone, It stimulates resorption of bones... 3 Edit Delete
15060 Which of the following symptom can not be expected, if there is tumour like growth in parathyroid glands? 6 610 Recommended Questions Tetany of muscle., Increase in Ca⁺⁺ level deposition of bones.... 4 Edit Delete
15059 The blood calcium level is lowered by the deficiency of? 6 610 Recommended Questions parathormone, thyroxine... 1 Edit Delete
15058 Identify the incorrect statement: 1. In males FSH regulates spermatogenesis 2. Thyroid gland produces T3 and thyroxine (T4) hormones 3. ACTH stimulates secretion of glucocorticoids 4. PTH is a hyperglycemic hormone 6 610 Recommended Questions In males FSH regulates spermatogenesis, Thyroid gland produces T3 and thyroxine (T4) hormones... 4 Edit Delete
15057 Which of the following is incorrect with respect to parathyroid hormone (PTH)? 6 610 Recommended Questions Secretion of PTH is regulated by circulating levels of calcium ions., PTH acts on bones and stimulates the process of bone mineralisation.... 2 Edit Delete
15056 If insufficient PTH is produced, the blood calcium level drops, resulting in _____. 6 610 Recommended Questions reduced growth in childhood or parathyroid dwarfism, tetany, where the body shakes from continuous muscle contraction... 2 Edit Delete
15055 A hormone that is antagonist to the parathyroid hormone is secreted from: 6 610 Recommended Questions Thyroid, Adrenal cortex... 1 Edit Delete
15054 Parathyroid hormone works antagonistic with 6 610 Recommended Questions Thyrocalcitonin, Thyroxine... 1 Edit Delete
15053 In a child of 15 years age, plasma calcium level is diagnosed below optimum level. Which organ is malfunctioning? 6 610 Recommended Questions Thyroid gland, Liver... 3 Edit Delete
15052 Identify the gland (a) and (b) shown below and select right option giving their number & function 6 610 Recommended Questions a (i) Thyroid 1 pair Promotes the bone deformation, b (ii) Thyroid 2 pairs Promotes the stunted growth of growing baby... 4 Edit Delete
15051 Which hormone regulates the calcium level in our body? 6 610 Recommended Questions Thyrocalcitonin, Parathyroid hormone... 4 Edit Delete
15050 Select the incorrect match with respect to hormones and respective deficiency disease 6 610 Recommended Questions PTH – Diabetes insipidus, Growth hormone – Dwarfism... 1 Edit Delete
15049 Which of the following is true about parathyroid glands? 6 610 Recommended Questions They are 4 in number, Located on dorsal side of thyroid gland... 4 Edit Delete
15048 Function of thyrocalcitonin: 6 610 Recommended Questions To reduce the calcium level in blood, To increase the calcium level in blood... 1 Edit Delete
15047 Dwarfism, pot belly and deaf-mutism are seen in which disease? 6 610 Recommended Questions Myxoedema, Cretinism... 2 Edit Delete
15046 A man is having tumor in thyroid gland which adversely affects the body physiology, this is because of 6 610 Recommended Questions hyperthyroidism, hypothyroidism... 1 Edit Delete
15045 A man is having tumor in thyroid gland which adversely affects the body physiology, this is because of 6 610 Recommended Questions hyperthyroidism, hypothyroidism... 1 Edit Delete
15044 A person who has enlarged thyroid gland, protruded eye balls, increased BMR and weight loss is suffering from 6 610 Recommended Questions Exopthalmic goitre, Graves’ disease... 3 Edit Delete
15043 Graves disease is caused due to? 6 610 Recommended Questions hyposecretion of thyroid gland, hypersecretion of thyroid gland... 2 Edit Delete
15042 A child, with stunted growth, mental retardation, low IQ, and deaf-mutism, is having these conditions because of 6 610 Recommended Questions hyperthyroidism, hypothyroidism... 2 Edit Delete
15041 A pregnant female delivers a baby who suffers from stunted growth, mental retardation/low intelligence quotient and abnormal skin. This is the result of: 6 610 Recommended Questions Low secretion of growth hormone, Cancer of the thyroid gland... 4 Edit Delete
15040 Which of the following hormone regulates BMR of the body? 6 610 Recommended Questions Thyroxine, Thyrocalcitonin... 1 Edit Delete
15039 Which of the following is likely to develop goitre? 6 610 Recommended Questions Thyroid gland that is producing too much parathormone, Circulating levels of thyrotropin are too low... 3 Edit Delete
15038 Which of the following conditions is not linked to thyroid hormone? 6 610 Recommended Questions Cretinism, Goitre... 3 Edit Delete
15037 Thyroxine controls the metabolism of the following macromolecules except 6 610 Recommended Questions Carbohydrates, Fats... 4 Edit Delete
15036 Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/deficiency symptom: 6 610 Recommended Questions Posterior Pituitary, Growth Hormone (GH), Oversecretion stimulates abnormal growth, Thyroid gland, Thyroxine, Lack of iodine in diet results in goitre... 2 Edit Delete
15035 One of these pairs are not correctly matched 6 610 Recommended Questions Insulin – Raised blood sugar, Cretinism – Mental retardation... 1 Edit Delete
15034 Find out the correct match for the following table. Column-I Column-II Column-III (i) Pituitary gland Growth hormone Acromegaly (ii) Thyroid gland Thyroxine Exophthalmic goitre (iii) Pituitary gland ADH Diabetes mellitus 6 610 Recommended Questions (i) only, (i) and (ii)... 2 Edit Delete
15033 The thyroid gland is composed of 6 610 Recommended Questions Follicles, Stromal tissues... 4 Edit Delete
15032 Which of the following is true about thyroid gland? 6 610 Recommended Questions It has 2 lobes, It is present on either side of trachea... 4 Edit Delete
15031 The thyroid gland is composed of 6 610 Recommended Questions Follicles, Stromal tissues... 4 Edit Delete
15030 Select the incorrect match of a hormone, its source, and function 6 610 Recommended Questions Oxytocin - Hypothalamus - Milk ejection, Vasopressin - Posterior pituitary - Reabsorption of water from the nephric filtrate... 2 Edit Delete
15029 Which one of the following hormones is not involved in sugar metabolism? 6 610 Recommended Questions Cortisone, Aldosterone... 2 Edit Delete
15028 Oxytocin helps in 6 610 Recommended Questions Ovulation, Lactation but not childbirth... 4 Edit Delete
15027 Which of the following is a storage and release center for neurohormones? 6 610 Recommended Questions Anterior pituitary, Posterior pituitary... 2 Edit Delete
15026 A person passes a lot of dilute urine and drinks a lot of water but does not have glycosuria. He is most likely suffering from: 6 610 Recommended Questions Type 1 diabetes mellitus, Type 2 diabetes mellitus... 4 Edit Delete
15025 All the following are secreted by the anterior pituitary except: 6 610 Recommended Questions Prolactin, Somatotropin... 3 Edit Delete
15024 Which of the following hormones is responsible for both the milk ejection reflex and the foetal ejection reflex? 6 610 Recommended Questions Estrogen, Prolactin... 3 Edit Delete
15023 In human adult females, oxytocin 6 610 Recommended Questions is secreted by anterior pituitary, Stimulates growth of mammary glands... 4 Edit Delete
15022 How many of the following hormones are secreted by posterior pituitary? GH, PRL, TSH, ACTH, LH, FSH, MSH, Oxytocin and vasopressin 6 610 Recommended Questions 2, 4... 1 Edit Delete
15021 A hormonal disorder that develops when pituitary gland produces too much growth hormone during adulthood is known as: 6 610 Recommended Questions cretinism, gigantism... 4 Edit Delete
15020 Which of the following is caused because of the excess secretion of the GH? 6 610 Recommended Questions Gigantism, Acromegaly... 4 Edit Delete
15019 MSH is secreted by: 6 610 Recommended Questions Anteria lobe of the pituitary, Middle lobe of the pituitary... 2 Edit Delete
15018 How many hormones in the given list are not produced by the anterior pituitary? Prolactin(PRL), growth hormone(GH), Oxytocin, Thyroid stimulating hormone(TSH), vasopressin, somatostatin, and Gonadotrophin releasing hormone(GnRH). 6 610 Recommended Questions 6, 5... 3 Edit Delete
15017 Adenohypophysis is an endocrine gland that secretes all of the following except: 6 610 Recommended Questions corticotropin, luteinizing hormone... 3 Edit Delete
15016 How many of the following hormones are secreted by Anterior Pituitary? GH, PRL, TSH, ACTH, LH, FSH, Oxytocin and vasopressin 6 610 Recommended Questions 9, 8... 3 Edit Delete
15015 ACTH controls the secretion of: 6 610 Recommended Questions cortisol, aldosterone... 1 Edit Delete
15014 Which one of the following hormones though synthesised elsewhere, is stored and released by the master gland? 6 610 Recommended Questions Antidiuretic hormone, Luteinizing hormone... 1 Edit Delete
15013 Which of the following is not a correct combination of the hormone with its source organ and target organ? 6 610 Recommended Questions Somatostatin - Hypothalamus - Adenohypophysis, FSH - Ovary - Uterus... 2 Edit Delete
15012 Group of neurosecretory cells found in hypothalamus is known as 6 610 Recommended Questions ganglia, nuclei... 2 Edit Delete
15011 Adenohypophysis in humans consists of: 6 610 Recommended Questions Pars distalis and Pars nervosa, Pars intermedia and Pars distalis... 2 Edit Delete
15010 What is the effect of GnRH produced by hypothalamus? 6 610 Recommended Questions Stimulates the synthesis and secretion of androgens, Stimulates secretion of milk in mammary glands... 1 Edit Delete
15009 Which of the following hormone is formed in the hypothalamus? 6 610 Recommended Questions Adrenalin, Oxytocin... 2 Edit Delete
15008 GnRH, a hypothalamic hormone, needed in reproduction, acts on 6 610 Recommended Questions anterior pituitary gland and stimulates secretion of LH and oxytocin, anterior pituitary gland and stimulates secretion of LH and FSH... 2 Edit Delete
15007 Which of the following endocrine glands is under the direct neural regulation of the hypothalamus? 6 610 Recommended Questions Pineal, Thymus... 3 Edit Delete
15006 Which of the following hormones stimulates the synthesis and secretion of steroid hormones from adrenal cortex 6 610 Recommended Questions LH, FSH... 3 Edit Delete
15005 Which of the following types of hormones are released by Hypothalamus 6 610 Recommended Questions Releasing hormones, Inhibitory hormones... 3 Edit Delete
15004 Read the following statement: (a) The hypothalamus is the basal part of diencephalon (b) Hypothalamus contains group of neurosecretory cells called ganglia which regulate the synthesis and secretion of pituitary hormone (c) GnRH from hypothalamus stimulate the anterior pituitary to release gonadotrophins (d) The posterior pituitary is under direct chemical regulation of the hypothalamus How many of above statements are correct? 6 610 Recommended Questions 4, 3... 4 Edit Delete
15003 Sella Turcica is found 6 610 Recommended Questions in bones, in joints... 3 Edit Delete
15002 Oxytocin and vasopressin synthesised in hypothalamus and reach to posterior pituitary by way of 6 610 Recommended Questions Anterior pituitary gland, Portal circulation... 4 Edit Delete
15001 Select the correct matching of hormone its source of synthesis and function. 6 610 Recommended Questions Glucagon - b-cells of pancreas - Increase blood glucose levels, Vasopressin - Hypothalamus - Increase diuresis... 3 Edit Delete
15000 Which of the disease is likely to happen if an impairment affecting synthesis of ADH results in loss of water and dehydration 6 610 Recommended Questions Diabetes Insipidus, Diabetes Mellitus... 1 Edit Delete
14999 Which gland is under the direct neural regulation of hypothalamus? 6 610 Recommended Questions Pineal gland, Anterior pituitary gland... 3 Edit Delete
14998 The basal part of diencephalon is 6 610 Recommended Questions Hypothalamus, Epithalamus... 1 Edit Delete
14997 Neurohypophysis store and release hormones which are actually synthesised by the hypothalamus and are transported axonally here. Which of the following hormones belong to this category? 6 610 Recommended Questions Glucocorticoid gonadotropins, FSH, LH... 3 Edit Delete
14996 How many of the following are peptide hormones? Gastrin, Secretin, Cholecystokinin, Gastric inhibitory peptide, ANF, Erythropoietin 6 610 Recommended Questions 3, 4... 4 Edit Delete
14995 Which of the following is incorrect about hormones 6 610 Recommended Questions Highly specific in nature, released into blood... 3 Edit Delete
14994 Which of the following statement is correct in relation to the endocrine system? 6 610 Recommended Questions Adenohypophysis is under direct neural regulation of the hypothalamus, Organs in the body like gastrointestinal tract, heart, kidney and liver do not produce any hormones... 3 Edit Delete
14993 The amino acid derivative among the following hormone is:- 6 610 Recommended Questions Insulin, Epinephrine... 2 Edit Delete
14992 Which of the following is not true for cerebrum? 6 609 Recommended Questions Forms the major part of the human brain, A deep cleft divides transversely into two halves... 2 Edit Delete
14991 Which of the following is the outermost mean of protection for brain? 6 609 Recommended Questions Skull, Dura mater... 1 Edit Delete
14990 Read all statements carefully and identify the number of correct ones: (a) Neural system provides an organised network of point-to-point connections for quick coordination. (b) Impulse transmission across a chemical synapse is always faster than that across an electrical synapse. (c) Cerebral aqueduct passes through the midbrain. (d) The hypothalamus contains centers that control respiration and gastric secretions. 6 609 Recommended Questions One, Two... 2 Edit Delete
14989 Which of the following is the outermost cranial meninges? 6 609 Recommended Questions Pia mater, Dura mater... 2 Edit Delete
14988 Which of the following cranial meninges is in close contact of the brain tissue? 6 609 Recommended Questions Arachnoid, Pia mater... 2 Edit Delete
14987 Which of the following is the middle layer of cranial meninges? 6 609 Recommended Questions Arachnoid, Dura mater... 1 Edit Delete
14986 Mark the incorrect match: 6 609 Recommended Questions Cerebral aqueduct → A canal passes through the midbrain, connecting 3rd ventricle to 4th ventricle of brain., Corpus callosum → Thick band of nerve fibres that divides the cerebral cortex lobes into left and right hemispheres.... 2 Edit Delete
14985 The layer of cells which covers the cerebral hemisphere is called 6 609 Recommended Questions Cerebrum, Pia mater... 3 Edit Delete
14984 Which of the following areas does not belong to cerebral cortex? 6 609 Recommended Questions Motor areas, Sensory areas... 4 Edit Delete
14983 The grey color of cerebral cortex is due to 6 609 Recommended Questions Neuronal cell bodies, Neuronal axons... 1 Edit Delete
14982 Which part of the brain is responsible for thermoregulation? 6 609 Recommended Questions Medulla oblongata, Cerebrum... 3 Edit Delete
14981 The cerebral cortex is referred to 6 609 Recommended Questions White matter, Grey matter... 2 Edit Delete
14980 Cerebral cortex is thrown into 6 609 Recommended Questions Prominent folds, Prominent skull suture... 1 Edit Delete
14979 Select the answer with correct matching of the structure, its location and function: 6 609 Recommended Questions Cerebellum, Mid brain, Controls respiration and gastric secretions, Hypothalamus, Fore brain, Controls body temperature, urge for eating and drinking... 2 Edit Delete
14978 ______ integrates information received from semicircular canals of ear and ______ regulates emotional reactions with limbic system. 6 609 Recommended Questions Cerebral cortex, Midbrain, Cerebellum, Midbrain... 4 Edit Delete
14977 ___A___ is a major coordinating centre for sensory and motor signaling present in the forebrain of the central nervous system. Here 'A' is: 6 609 Recommended Questions Association area, Thalamus... 2 Edit Delete
14976 Which of the following structures or regions is incorrectly paired with its function? 6 609 Recommended Questions limbic system—screening of information between the spinal cord and the brain; regulates arousal and sleep, medulla oblongata—homeostatic control center... 1 Edit Delete
14975 Which of the following statements are true regarding association areas of brain? A. These are the largest areas of forebrain. B. These are involved in the regulation of sexual behaviour, expression of emotional reactions and motivation. C. These are responsible for complex functions like intersensory association, memory and communication. D. It is a part of cerebral cortex. 6 609 Recommended Questions A & B, A, B & C... 3 Edit Delete
14974 Hypothalamus does not contain centre for controlling 6 609 Recommended Questions Body temperature, Hunger... 3 Edit Delete
14973 Consider the characteristics of a certain part of the human brain: I. It contains neurosecretory cells. II. It is an important part of the limbic system. III. It is a part of the diencephalons. This part of the human brain is: 6 609 Recommended Questions Hypothalamus, Medulla oblongata... 1 Edit Delete
14972 Cerebral aqueduct passes through the: 6 609 Recommended Questions Mid brain, Diencephalon... 1 Edit Delete
14971 Injury localized to the hypothalamus would most likely disrupt: 6 609 Recommended Questions short-term memory, co-ordination during locomotion... 4 Edit Delete
14970 Limbic system is concerned with 6 609 Recommended Questions Components of cerebrum and diencephalon, Regulation of sexual behaviour... 4 Edit Delete
14969 Which of the following is not associated with midbrain? 6 609 Recommended Questions Located between thalamus of the forebrain and pons of the hindbrain, A canal called the cerebral aqueduct passes through the midbrain... 3 Edit Delete
14968 A canal called the cerebral aqueduct passes through the: 6 609 Recommended Questions Diencephalon, Midbrain... 2 Edit Delete
14967 Pons connects different regions of the brain by the means of 6 609 Recommended Questions Fibre Tracts, Cell bodies... 1 Edit Delete
14966 Which of the following is not regulated by Medulla? 6 609 Recommended Questions Respiration, Cardiovascular reflexes... 4 Edit Delete
14965 The brain stem does not include: 6 609 Recommended Questions medulla, pons... 4 Edit Delete
14964 Which of the following is not a part of forebrain? 6 609 Recommended Questions Cerebrum, Thalamus... 4 Edit Delete
14963 The reflex arc ends at: 6 609 Recommended Questions sensory neuron, motor neuron... 3 Edit Delete
14962 Consider the following statements. (a) Occurs involuntarily and without conscious effort. (b) At least no afferent and two efferent neuron required. (c) Only motor neuron is involved in the action. (d) Polysynaptic and conditional reflex. (e) Regulated by the spinal cord. Which of the above statements are correct for the reflex shown in the above figure? 6 609 Recommended Questions a and e, b, c and d... 1 Edit Delete
14961 Which of the following is a reflex action? 6 609 Recommended Questions Sudden withdrawal of body part, when it comes in contact of hot body, Knee jerk reflex... 4 Edit Delete
14960 The sensory neuron enters the spinal cord through: 6 609 Recommended Questions The dorsal root of the spinal nerve, The ventral root of the spinal nerve... 1 Edit Delete
14959 Reflex action does not involve 6 609 Recommended Questions Conscious thought, PNS... 1 Edit Delete
14958 The........ receive signals from........ and transmit it via........ nerve root 6 609 Recommended Questions Afferent neurons, sensory organs, dorsal, Afferent neurons, effector organs, ventral... 1 Edit Delete
14957 A major coordinating center for sensory and motor signaling in the human brain is shown in the given sagittal section by the letter: 6 609 Recommended Questions A, B... 2 Edit Delete
14956 Highly vascular and closely investing protective coat around the brain is known as 6 609 Recommended Questions Arachnoid, Pia mater... 2 Edit Delete
14955 Unmyelinated nerve fiber is: 6 609 Recommended Questions Not enclosed by a Schwann cell and hence not enclosed by a myelin sheath., Enclosed by a Schwann cell that does not form a myelin sheath.... 2 Edit Delete
14954 The limbic system is formed by 6 609 Recommended Questions The hypothalamus, epithalamus, amygdala and hippocampus, Hypothalamus, amygdala and hippocampus... 2 Edit Delete
14953 Which of the following neural system relays the impulse from CNS to skeletal muscles? 6 609 Recommended Questions Somatic neural system, Sympathetic neural system... 1 Edit Delete
14952 The somatic neural system of the peripheral nervous system 6 609 Recommended Questions Relays impulses from CNS to smooth muscles of body, Relays impulses from organs to the CNS... 4 Edit Delete
14951 Consider the following statements: I. Acetylcholine is released at the electric synapse. II. Electric synapses are faster. III. It is more difficult to regulate an electric synapse with respect to a chemical synapse. Which of the above statements are true? 6 609 Recommended Questions I and II only, I and III only... 3 Edit Delete
14950 Nerve impulse is transmitted from one neuron to another neuron by the means of 6 609 Recommended Questions Synapse, Junction... 3 Edit Delete
14949 In chemical synapse, postsynaptic membrane receptor binds with 6 609 Recommended Questions Excitatory neurotransmitter., Inhibitory neurotransmitter.... 4 Edit Delete
14948 Mark the correct statement: 6 609 Recommended Questions Electrical synapses are more common in our neural system than chemical synapses., The new potential in the post-synaptic neurons may be either excitatory or inhibitory.... 2 Edit Delete
14947 A diagram showing the axon terminal and synapse is given. Identify correctly at least two of A-D: 6 609 Recommended Questions B- Synaptic connection; D- K⁺, A- Neurotransmitter; B- Synaptic cleft... 4 Edit Delete
14946 Five events in the transmission of nerve impulse across the synapse are given– A. Opening of specific ion channels allows the entry of ions, a new action potential is generated in the post synaptic neuron. B. Neurotransmitter binds to the receptor on post synaptic membrane C. Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter releases into synaptic cleft D. Depolarization of pre-synaptic membrane E. Arrival of action potential at axon terminal. In which sequence do these events occur? 6 609 Recommended Questions E → D → C → B → A, A → B → C → D → E... 1 Edit Delete
14945 Synaptic cleft is not 6 609 Recommended Questions Separated by pre synaptic and post synaptic neurons, a fluid filled space... 4 Edit Delete
14944 Which of the following is not associated with electrical synapse? 6 609 Recommended Questions No synaptic cleft, Pre synaptic membranes and post synaptic membranes are in close association with each other... 4 Edit Delete
14943 Receptor sites for neurotransmitters are located on the: 6 609 Recommended Questions tips of axons, axon membranes in the regions of the nodes of Ranvier... 3 Edit Delete
14942 Which of the following is not associated with impulse transmission across an electrical synapse? 6 609 Recommended Questions Faster than chemical synapse, Rare in our system... 4 Edit Delete
14941 Which of the following has not to be there in a synapse? 6 609 Recommended Questions Pre synaptic neuron, Post synaptic neuron... 4 Edit Delete
14940 Which of the following is not associated with chemical synapse? 6 609 Recommended Questions Slower than electrical synapse, Synaptic cleft... 4 Edit Delete
14939 Consider the following statements: I: The resting axonal membrane is nearly impermeable to sodium ions. II: Depolarization of the axonal membrane is due to the influx of sodium ions. III: The size of the action potential, if produced, does not depend on the strength of the stimulus. Which of the above statements are true? 6 609 Recommended Questions I and II only, I and III only... 4 Edit Delete
14938 Restoration of resting potential of the membrane at the site of excitation is achieved by:- 6 609 Recommended Questions Diffusion of K⁺ outside the membrane, Diffusion of Na⁺ outside the membrane... 1 Edit Delete
14937 Which of the following minerals reduces the excitability of nerves and muscles? 6 609 Recommended Questions Potassium, Sodium... 1 Edit Delete
14936 Immediately after an action potential has peaked, which cellular gates open? 6 609 Recommended Questions Sodium, Chloride... 4 Edit Delete
14935 When neuron is resting, which of the following is false with respect to that 6 609 Recommended Questions It is not conducting any impulse, Axonal membrane is more permeable to potassium ions... 3 Edit Delete
14934 Read the following statements (A) Depolarization of an axonal membrane is caused due to rise in stimulus-induced permeability to Na+ and its rapid influx into axoplasm. (B) Diffusion of K+ outside the axonal membrane restores the resting potential of the membrane. (C) Sodium potassium pump maintains active transport of 2Na+ outwards for 3K+ into axoplasm across resting membrane Choose the option that represent correct statements only 6 609 Recommended Questions A only, A and B... 2 Edit Delete
14933 During the propagation of a nerve impulse, the action potential results from the movement of 6 609 Recommended Questions K⁺ ions from extracellular fluid to intracellular fluid, Na⁺ ions from intracellular fluid to extracellular fluid... 4 Edit Delete
14932 The depolarization of the axonal membrane is due to: 6 609 Recommended Questions Influx of sodium ions, Efflux of sodium ions... 1 Edit Delete
14931 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I I. Influx of sodium II. Efflux of potassium III. Na⁺/K⁺ pump IV. Ca⁺⁺ Column II 1. Original establishment of RMP 2. Repolarization 3. Depolarization 4. Plateau in cardiac muscles Codes: 6 609 Recommended Questions 3 2 4 1, 2 1 4 3... 4 Edit Delete
14930 The 'sodium-potassium pump' pumps _____. 6 609 Recommended Questions sodium ions out and potassium ions in, sodium ions in and potassium ions out... 1 Edit Delete
14929 Depolarization of axolemma during nerve conduction takes place because of: 6 609 Recommended Questions Equal amount of Na⁺ & K⁺ moves out across axolemma, Na⁺ ions move inside... 2 Edit Delete
14928 Which of the following event can be related to the repolarisation of nerve fiber? 6 609 Recommended Questions Opening up of K⁺ gated channel, Opening up of Cl⁻ gated channel... 4 Edit Delete
14927 Nerve impulse travelling through synapses cannot be 6 609 Recommended Questions Excitatory, Inhibitory... 4 Edit Delete
14926 During the process of impulse conduction, the depolarisation of axon takes place because 6 609 Recommended Questions Voltage gated K⁺ channels open, Equal amounts of Na⁺ and K⁺ are pumped out... 3 Edit Delete
14925 The resting axonal membrane of a neuron: 6 609 Recommended Questions is not polarized, has an excess of anions on the outside... 3 Edit Delete
14924 Sodium potassium pump in neuronal membranes is 6 609 Recommended Questions Responsible for transfer of 3 sodium outwards and two potassium inwards, Responsible for 2 sodium outwards and three potassium inwards... 1 Edit Delete
14923 When a stimulus is applied at a site over neuron membrane 6 609 Recommended Questions It becomes freely permeable to Sodium ions, It becomes freely permeable to potassium ions... 1 Edit Delete
14922 Ionic gradients across the resting membrane are maintained by 6 609 Recommended Questions Active transport of ions, RMP... 1 Edit Delete
14921 In a chemical synapse, when an impulse arrives at the axon terminal, it: 1. leads to the opening of the calcium channels at the post-synaptic membrane. 2. Stimulates the fusion of synaptic vesicles towards the pre-synaptic membrane. 3. causes the binding of the neurotransmitter of its receptors on the post-synaptic neuron. 4. activates the opening of the potassium channels in the axon terminal. 6 609 Recommended Questions leads to the opening of the calcium channels at the post-synaptic membrane., Stimulates the fusion of synaptic vesicles towards the pre-synaptic membrane.... 2 Edit Delete
14920 The rise in stimulus-induced permeability to a. Potassium ions b. Sodium ions c. Restoring RMP d. Diffusion of potassium ions Arrange them in order. 6 609 Recommended Questions b-a-c-d, a-b-c-d... 3 Edit Delete
14919 The........ difference across the resting membrane is called as Resting potential. 6 609 Recommended Questions Electrochemical potential, Electrical potential... 2 Edit Delete
14918 Which of the following conditions are not true across resting membrane? 6 609 Recommended Questions Axoplasm has more number of Potassium ions, Axoplasm has less number of sodium ions... 3 Edit Delete
14917 At Resting condition, the neuron membrane is 6 609 Recommended Questions Negative from outside, Negative from inside... 2 Edit Delete
14916 Neurons are excitable cells because 6 609 Recommended Questions Their membranes are in unpolarized state, There membranes are very light to create channels... 4 Edit Delete
14915 The membrane of neuron is polarized because 6 609 Recommended Questions Different kind of lipids are there over membrane, Different kinds of ion channels are there in membrane... 4 Edit Delete
14914 The polarity of the membrane at site A is reversed ie inside of the membrane becomes changed from negative to positive 6 609 Recommended Questions Called as depolarization, Called as repolarization... 1 Edit Delete
14913 Consider the following statements: I. Somatic neural system relays impulses from CNS to skeletal muscles. II. Autonomic neural system transmits impulses from CNS to involuntary organs and smooth muscles. III. Unmyelinated nerve fibres are commonly found in spinal and cranial nerves. Which of the above statements are true? 6 609 Recommended Questions I and II only, I and III only... 1 Edit Delete
14912 Node of Ranvier occurs where 6 609 Recommended Questions nerve is covered with myelin sheath, neurolemma is discontinuous... 4 Edit Delete
14911 Which of the following is/are controlled by the human brain? 6 609 Recommended Questions Only d, a and d... 4 Edit Delete
14910 Nissl's Granules are not found in 6 609 Recommended Questions Dendrites, Cell body... 3 Edit Delete
14909 The somatic neural system relays impulses 6 609 Recommended Questions From skeletal muscles to CNS, From CNS to skeletal muscles... 2 Edit Delete
14908 Select the incorrect statement: 6 609 Recommended Questions Na⁺/K⁺ ATPase is an electrogenic pump that helps to maintain an electrochemical ionic gradient across axolemma., At rest, axoplasm has lower Na⁺ ions concentration than K⁺ ion concentration.... 4 Edit Delete
14907 Unmyelinated nerve fibres are found in 6 609 Recommended Questions Autonomous, Somatic Neural systems... 3 Edit Delete
14906 Unipolar neuron means 6 609 Recommended Questions Cell body with one axon only, Cell body with dendrite only... 1 Edit Delete
14905 PNS does not belong to which of the following system? 6 609 Recommended Questions Somatic Neural System, Autonomic Neural System... 3 Edit Delete
14904 The neural system provides an organized network of ___A___ connections for a ___B___ coordination. Choose the correct option for A, B to complete the given statement. 6 609 Recommended Questions A – point to point, B – slow, A – chemical, B – fast... 3 Edit Delete
14903 PNS does not consist of 6 609 Recommended Questions Afferent Fibres, Efferent Fibres... 4 Edit Delete
14902 Multipolar neurons are 6 609 Recommended Questions One axon and two or more dendrites, One dendrites and two or more axon... 1 Edit Delete
14901 CNS is not 6 609 Recommended Questions Brain, Spinal cord... 4 Edit Delete
14900 Which of the following does not have a brain? 6 609 Recommended Questions Hydra, Insects... 1 Edit Delete
14899 Which of the following is not associated with ANS? 6 609 Recommended Questions Sympathetic neural system, Parasympathetic neural system... 3 Edit Delete
14898 Axon cannot have 6 609 Recommended Questions Synaptic knob with synaptic vesicles, Distal end is branched... 4 Edit Delete
14897 Myelinated nerve fibres are found in 6 609 Recommended Questions Cranial nerves, Spinal nerves... 3 Edit Delete
14896 Neuron cannot perform which of the following functions? 6 609 Recommended Questions Detection of stimuli, Receiving stimuli... 4 Edit Delete
14895 The gaps between two adjacent myelin sheath are called 6 609 Recommended Questions Nodes of Ranvier, Axon terminal... 1 Edit Delete
14894 Human neural system has 6 609 Recommended Questions CNS, PNS... 3 Edit Delete
14893 Consider the following statements: I. A motor neuron along with the muscle fibers connected to it constitute a motor unit II. The neurotransmitter released at the neuro-muscular junction is Acetylcholine. III. Myosin head has ATPase activity Which of the above statements are true? 6 609 Recommended Questions I and II only, I and III only... 4 Edit Delete
14892 164 6 608 Recommended Questions 1, 2... 1 Edit Delete
14891 Which one of the following is the correct description of a certain part of a normal human skeleton? 6 608 Recommended Questions First vertebra is axis that articulates with the occipital condyles, The 9th and 10th pairs of ribs are called the floating ribs... 4 Edit Delete
14890 Present in the ventral midline of thorax and is a flat bone; It can be 6 608 Recommended Questions Scapula, Sternum... 2 Edit Delete
14889 Human skull has how many occipital condyle? 6 608 Recommended Questions Two, Four... 1 Edit Delete
14888 The articulation of skull with the vertebral column is by 6 608 Recommended Questions Occipital condyles, Occipital bone... 1 Edit Delete
14887 Human skull is: 6 608 Recommended Questions Dicondylic, Monocondylic... 1 Edit Delete
14886 How many ear ossicles are there in humans? 6 608 Recommended Questions 6, 8... 1 Edit Delete
14885 Consider the following statements: I. Myasthenia gravis is an autoimmune disorder affecting the neuromuscular junction II. Muscular dystrophy is a progressive degeneration of skeletal muscles mostly due to a genetic disorder III. Tetany is rapid spasms in muscles due to high Ca²⁺ in body fluid. Which of the above statements are true? 6 608 Recommended Questions I and II only, I and III only... 1 Edit Delete
14884 Select the correct statement regarding the specific disorder of muscular or skeletal system 6 608 Recommended Questions Myasthenia gravis- Autoimmune disorder which inhibits sliding of myosin filaments, Gout-inflammation of joints due to extra deposition of calcium... 4 Edit Delete
14883 Which of the following is not a disorder of muscular and skeletal system? 6 608 Recommended Questions Gout, Myasthenia gravis... 4 Edit Delete
14882 Which one of the following disorder of bones is characterized by microarchitectural deterioration of the bone, increased fragility, and prone to fracture? 6 608 Recommended Questions Osteoarthritis, Gouty arthritis... 3 Edit Delete
14881 Match the columns: Column I: (a) Myasthenia gravis, (b) Tetany, (c) Muscular dystrophy, (d) Gout. Column II: (i) Wild contractions for prolonged period due to decreased Ca++ in blood, (ii) Affects neuromuscular junction and results in muscle paralysis, (iii) Increased uric acid levels in blood and joints, (iv) Degeneration of skeletal muscles. 6 608 Recommended Questions (ii) (i) (iv) (iii), (i) (ii) (iii) (iv)... 1 Edit Delete
14880 Arthritis is 6 608 Recommended Questions Inflammation of joints, Inflammation of forelimbs... 1 Edit Delete
14879 Identify the incorrectly matched pair: 6 608 Recommended Questions Proximal radio-ulnar joint - Pivot, Joint between the carpals - Gliding... 3 Edit Delete
14878 Which of the following is wrong? 6 608 Recommended Questions Force generated by muscle is used to carry out movement through joints, The movability of joints vary depending on different factors... 3 Edit Delete
14877 Consider the following statements: I. Proximal radioulnar joint is a type of ellipsoidal joint. II. The first carpo-metacarpal joint is a saddle joint. III. Gleno-humeral joint is a ball and socket joint. Which of the above statements are true? 6 608 Recommended Questions I and II only, I and III only... 3 Edit Delete
14876 Which of these pairs is mismatched? 6 608 Recommended Questions slightly movable joint–vertebrae, hinge joint–hip... 2 Edit Delete
14875 The characteristics and an example of a synovial joint in humans is 6 608 Recommended Questions Fluid cartilage between two bones, limited movements - Knee joints, Fluid filled between two joints, provides cushion - Skull bones... 3 Edit Delete
14874 Complete the analogy with respect to joints Saddle joint: Between carpal and metacarpal of thumb:: Hinge joint:_____ 6 608 Recommended Questions Between femur and acetabulum, Between femur and tibia... 2 Edit Delete
14873 Identify the incorrectly matched pair: 6 608 Recommended Questions Hinge - Knee, Pivot - Between atlas and axis vertebra... 3 Edit Delete
14872 Match the following: (i) Fibrous Joint (ii) Cartilaginous Joint (iii) Pivot Joint (iv) Ball and Socket Joint (a) Between two adjacent vertebrae. (b) Between humerus and pectoral girdle. (c) Sutures. (d) Between atlas and axis. 6 608 Recommended Questions iv → (d), iii → (b), i → (c), ii → (a), i → (a), ii → (c), iii → (d), iv → (b)... 3 Edit Delete
14871 Consider the characters of a particular type of joint: I. It is a type of synovial joint II. It enables the bone to move in a 360° angle. III. It is exemplified by joint between humerus and pectoral girdle What is this type of joint called? 6 608 Recommended Questions Hinge, Ball and socket... 2 Edit Delete
14870 The name of the joint between the ribs and sternum is: 6 608 Recommended Questions Cartilaginous joint, Angular joint... 1 Edit Delete
14869 Fibrous joints are not 6 608 Recommended Questions Do not allow any movement, Present between flat skull bones which fuse end to end... 4 Edit Delete
14868 Which of the following joints would allow no movement? 6 608 Recommended Questions Fibrous joint, Cartilaginous joint... 1 Edit Delete
14867 Joint between bones in the form of sutures of human skull is a: 6 608 Recommended Questions Hinge joint, Synovial joint... 4 Edit Delete
14866 The fusion of which set of bones forms the coxal bone of the pelvic girdle? 6 608 Recommended Questions Malleus, incus and stapes, Ilium, scapula and ischium... 3 Edit Delete
14865 Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair. 6 608 Recommended Questions Malleus and stapes - Ear ossicles, Sternum and Ribs - Axial skeleton... 3 Edit Delete
14864 In the given four statements (a-d), select the options, which includes all the correct ones only: (a) Fibula does not participate in knee joint formation. (b) Tarsal bones are much larger and stronger than carpal bones because they have to support and distribute body weight. (c) Scapula situated dorsally in thoracic region between 2nd and 7th rib. (d) Two half of the pelvis girdle meet dorsally to form the pubic symphysis containing fibrous cartilage. 6 608 Recommended Questions Statement (a), (b), (c), Statement (a), (c), (d)... 1 Edit Delete
14863 The clavicle is articulated with the: 6 608 Recommended Questions Xiphoid process of the sternum, Acromion of the scapula... 2 Edit Delete
14862 Select the mismatch 6 608 Recommended Questions Scapula - Situated in between 2nd to 7th ribs, Ball and socket joint - Humerus and pectoral girdle... 4 Edit Delete
14861 Mark the correct set for appendicular skeleton? 6 608 Recommended Questions Coxal bone, Clavicle, Hyoid bone., Patella, Coxal bone, Sacrum.... 3 Edit Delete
14860 Pick out the correct match 6 608 Recommended Questions Sternum - 14, Pelvis - 3... 2 Edit Delete
14859 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I I. Acetabulum II. Glenoid Cavity III. Vertebrosternal ribs IV. Vertebrochondral ribs Column II 1. Pectoral girdle 2. Pelvic girdle 3. 7 pairs 4. 3 pairs Codes I II III IV 6 608 Recommended Questions 1 2 3 4, 2 1 4 3... 3 Edit Delete
14858 An acromion process is characteristically found in the - 6 608 Recommended Questions Skull of frog, Sperm of mammals... 4 Edit Delete
14857 Acromion process is related to 6 608 Recommended Questions Scapula, Humerus... 1 Edit Delete
14856 What part of the scapula bone shown in the figure articulates with the head of the humerus? 6 608 Recommended Questions A, B... 3 Edit Delete
14855 Scapula is a large triangular flat bone situated in the dorsal part of the thorax between: 6 608 Recommended Questions the second and fifth ribs, the second and seventh ribs... 2 Edit Delete
14854 Identify the structure marked 'X' 6 608 Recommended Questions Humerus, Radius... 4 Edit Delete
14853 The depression on the coxa where the head of the femur articulates is the 6 608 Recommended Questions acetabulum., auricular surface.... 1 Edit Delete
14852 The longest bone of human body is not 6 608 Recommended Questions Femur, Two in number... 4 Edit Delete
14851 Match the following Column I a. Tarsal b. Phalanges c. Meta tarsal d. Femur Column II i. 14 ii. 1 iii. 7 iv. 5 6 608 Recommended Questions a (iii), b (i), c (iv), d (ii), a (i), b (ii), c (iii), d (iv)... 1 Edit Delete
14850 Ankle bones in human body are not 6 608 Recommended Questions 5 in number, Known as Tarsals... 1 Edit Delete
14849 Given diagram shows bone of the left human hindlimb as seen from front. It has certain mistakes in labeling. Two of the wrongly labelled bones are 6 608 Recommended Questions tibia and tarsals, femur and fibula... 3 Edit Delete
14848 In the given diagram of the lower limb bones of a human, a sesamoid bone is depicted by the letter: 6 608 Recommended Questions A, B... 2 Edit Delete
14847 Knee cap is not 6 608 Recommended Questions Known as patella, Covers knee ventrally... 4 Edit Delete
14846 Metacarpals are 6 608 Recommended Questions Palm bones, Human body has 10 metacarpals... 4 Edit Delete
14845 Number of bone in each upper limb is: 6 608 Recommended Questions 1, 1, 1, 1, 8, 5, 14... 4 Edit Delete
14844 Digits are not 6 608 Recommended Questions Found in forelimb, 15 in one hand... 2 Edit Delete
14843 Carpal is not 6 608 Recommended Questions Wrist bone, 8 carpals in each forelimb... 3 Edit Delete
14842 Limbs in humans are not used for 6 608 Recommended Questions Change in body postures, Locomotion... 3 Edit Delete
14841 Which of the following is not a forelimb bone? 6 608 Recommended Questions Fibula, Humerus... 1 Edit Delete
14840 Which of the following is not a bone of hindlimb? 6 608 Recommended Questions Femur, Tibia... 4 Edit Delete
14839 The total number of bones in the limb of a man is 6 608 Recommended Questions 24, 30... 2 Edit Delete
14838 The human ribs are termed as bicephalic because: 6 608 Recommended Questions They have two articulations surfaces on their ventral end., They have two articulations surfaces on their dorsal end.... 2 Edit Delete
14837 Which one of the following items gives its correct total number? 6 608 Recommended Questions Floating ribs in humans - 4, Amino acids found in proteins -16... 1 Edit Delete
14836 Floating ribs are not 6 608 Recommended Questions Four in number, Connected dorsally... 3 Edit Delete
14835 True ribs are 6 608 Recommended Questions First seven pairs, Dorsally attached to sternum... 1 Edit Delete
14834 Hyaline cartilage helps in the attachment of 6 608 Recommended Questions 8th, 9th and 10th pairs of ribs to the 7th pair of ribs, 7th pair of ribs to the vertebral Column... 1 Edit Delete
14833 Hyaline cartilage connects which of the following ribs pair directly to the sternum? 6 608 Recommended Questions 7th rib pair, 12th rib pair... 1 Edit Delete
14832 Which of the following ribs have direct attachment with the sternum? 6 608 Recommended Questions 6th pair, 9th pair... 1 Edit Delete
14831 Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation. 6 608 Recommended Questions X = 12, Y = 7 True ribs are attached, dorsally to vertebral column and ventrally to the sternum., X = 12, Y = 5 True ribs are attached dorsally to vertebral column and sternum on the two ends.... 1 Edit Delete
14830 Given below is a diagrammatic representation of vertebral column. Which of the labelled structure forms thoracic cage? 6 608 Recommended Questions A, B... 2 Edit Delete
14829 Which of the following is not a part of rib cage? 6 608 Recommended Questions Thoracic vertebrae, Ribs... 4 Edit Delete
14828 Which of the following can not be true? 6 608 Recommended Questions All mammals have seven cervical vertebrae, Vertebral Column protects the spinal cord, and supports the head.... 1 Edit Delete
14827 Identify the structure labelled as 'A' and choose the correct option with respect to its number in human body 6 608 Recommended Questions 7 in number (cervical vertebrae), 12 in number (lumbar vertebrae)... 4 Edit Delete
14826 Vertebral Column is not 6 608 Recommended Questions 26 serially arranged units called vertebrae, Dorsally placed... 3 Edit Delete
14825 Spinal cord passes through 6 608 Recommended Questions Neural canal, Central hollow portion of vertebra... 3 Edit Delete
14824 First vertebra, help in articulation of vertebral Column with the occipital condyle are the properties of 6 608 Recommended Questions Atlas, Coccyx... 1 Edit Delete
14823 Which of the following is correct formula for vertebral column bones? 6 608 Recommended Questions C7 T12 L5 S1- fused Co-1 fused, C8 T12 L5 S2- fused Co-1 fused... 1 Edit Delete
14822 Consider the diagram given below. Parts labelled as A, B, C, D, E and F respectively indicate. 6 608 Recommended Questions Sacrum, ilium, pubis, femur, tibia and fibula, Ilium, pubis, sacrum, femur, fibula and tibia... 4 Edit Delete
14821 Which of the following are involved in the formation of acetabulum? 6 608 Recommended Questions a & b only, b & c only... 4 Edit Delete
14820 Each limb has.... Bones and human body has...... 6 608 Recommended Questions 30, 120, 20, 80... 1 Edit Delete
14819 How many vertebrochondral ribs are found in humans? 6 608 Recommended Questions 12 pairs, 5 pairs... 3 Edit Delete
14818 The human skull has 22 bones with... cranial bones and... facial bones 6 608 Recommended Questions 10,12, 14,8... 4 Edit Delete
14817 Appendicular skeleton does not carry 6 608 Recommended Questions Bones of the limbs, Girdles... 4 Edit Delete
14816 Number of bones in human axial skeleton is: 6 608 Recommended Questions 80, 106... 1 Edit Delete
14815 The figure is of rib cage. Identify A, B and C respectively: 6 608 Recommended Questions Coccyx, ribs, vertebral column, Sternum, ribs, vertebral column... 2 Edit Delete
14814 How many bones make up the human skeleton? 6 608 Recommended Questions 948, 96... 4 Edit Delete
14813 The useful purpose served by lactate fermentation is: 6 608 Recommended Questions Make lactose available for gluconeogenesis, Production of additional ATP in anaerobic conditions... 3 Edit Delete
14812 Lack of relaxation between successive stimuli in sustained muscle contraction is known as 6 608 Recommended Questions fatigue, tetanus... 2 Edit Delete
14811 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I I. Influx of sodium II. Efflux of potassium III. Na⁺/K⁺ pump IV. Ca⁺⁺ Column II 1. Original establishment of RMP 2. Repolarization 3. Depolarization 4. Plateau in cardiac muscles Codes: 6 608 Recommended Questions 3 2 4 1, 2 1 4 3... 4 Edit Delete
14810 What is true about the white muscle fibers? 6 608 Recommended Questions Myoglobin content is high, They have a large number of mitochondria... 3 Edit Delete
14809 Identify the incorrectly matched pair: 6 608 Recommended Questions Myasthenia gravis - Antibodies against neuromuscular junction, Tetany - Hypocalcemia... 3 Edit Delete
14808 Arrange the following events involved in muscular contraction (i) Action potential enters muscle fibre through T-tubules (ii) Ca²⁺ binds with troponin-C (iii) Actomyosin cross bridge formation (iv) Sliding of thin myofilament along the thick myofilament (v) Exposure of active sites on actin filaments (vi) Release of Ca²⁺ from sarcoplasmic reticulum 6 608 Recommended Questions (i) → (ii) → (iii) → (iv) → (v) → (vi), (vi)→(v)→(iv)→(iii)→(ii)→(i)... 4 Edit Delete
14807 Hypocalcemia may lead to:- 6 608 Recommended Questions Kidney stones, Cholelithiasis... 4 Edit Delete
14806 Red muscle fibres differs from white muscle fibres in having 6 608 Recommended Questions More sarcoplasmic reticulum, Less myoglobin content... 3 Edit Delete
14805 If production of pyruvic acid by anaerobic metabolism in a muscle is faster than it can be utilized, the surplus is converted to: 6 608 Recommended Questions lactic acid, adenosine diphosphate... 1 Edit Delete
14804 Which of the following property cannot be attributed to white fibers? 6 608 Recommended Questions Fewer mitochondria, Anaerobic process for energy... 4 Edit Delete
14803 In a healthy person, the red muscle fibres appear red due to stored 6 608 Recommended Questions Carboxyhemoglobin, Carbaminohemoglobin... 3 Edit Delete
14802 Stimulation of a muscle fiber by a motor neuron occurs at: 6 608 Recommended Questions the neuromuscular junction, the transverse tubules... 1 Edit Delete
14801 Repeated activation of the muscles can lead to 6 608 Recommended Questions Accumulation of pyruvate due to anaerobic breakdown of glycogen, Accumulation of lactic acid due to anaerobic breakdown of glycogen... 4 Edit Delete
14800 The muscle can directly use which of the following as a source of energy? 6 608 Recommended Questions Creatine phosphate, Glucose... 3 Edit Delete
14799 Muscle fatigue occurs due to the accumulation of 6 608 Recommended Questions CO₂, Myosin ATPase... 3 Edit Delete
14798 Sliding filament theory can be best explained as 6 608 Recommended Questions when myofilaments slide pass each other actin filaments shorten while myosin filament do not shorten, actin and myosin filaments shorten and slide pass each other... 3 Edit Delete
14797 Read the following statements (A-D):- (A) A neural signal reaching the neural muscular junction releases adrenalin. (B) Many monomeric proteins called meromyosin constitute one thin filament. (C) A complex protein troponin is distributed at irregular intervals on the tropomyosin. (D) During shortening of muscle, the I-bands get reduced. How many of the above statements are true? 6 608 Recommended Questions Four, One... 2 Edit Delete
14796 The combination of a neuron and the muscle fiber it associates with is called a/an ______. 6 608 Recommended Questions fascicle, motor end plate... 3 Edit Delete
14795 Which of the following statements about cross-bridges is false? 6 608 Recommended Questions They are composed of myosin, They bind to ATP after they attach to actin... 2 Edit Delete
14794 Which of the following is required for the breaking of cross-bridge during muscle contraction? 6 608 Recommended Questions ATP and Ca++, ADP and Ca++... 4 Edit Delete
14793 Arrange the events during muscle contraction in correct order. a. Acto-myosin complex synthesis b. Release of neurotransmitter (acetylcholine) at the neuromuscular junction c. Pumping of Ca²⁺ into sarcoplasmic cisternae d. Sliding of actin filaments over myosin e. Release of Ca²⁺ into sarcoplasm 6 608 Recommended Questions b, c, e, a d, e, b, a, d, c... 3 Edit Delete
14792 When a skeletal muscle contracts 6 608 Recommended Questions H-zone increases in length, A band decreases in length... 3 Edit Delete
14791 The role of calcium in muscle contraction is 6 608 Recommended Questions to break the cross-bridges as a cofactor in the hydrolysis of ATP, to bind with troponin, changing its shape so that the actin filament is exposed... 2 Edit Delete
14790 The cross-bridge formation actually involves 6 608 Recommended Questions ATP hydrolysis, Binding of Myosin head to the exposed active sites for myosin... 3 Edit Delete
14789 What masks the active sites for myosin head present on the actin myofilaments? 6 608 Recommended Questions Light meromyosin, Heavy meromyosin... 4 Edit Delete
14788 Sliding Filament Theory states that 6 608 Recommended Questions Contraction of muscle fibre takes place by the sliding of thin filaments over the thick filaments, Contraction of muscle fibre takes place by the sliding of thick filament over thin Filaments... 1 Edit Delete
14787 During contraction of muscle fibers which of the following does not happen? 6 608 Recommended Questions The length of the A band gets reduced, The attached actin filaments are pulled towards the centre of A band... 1 Edit Delete
14786 Which of the following statements is incorrect? 6 608 Recommended Questions A new ATP binds and cross-bridge is broken with the next cycle of contraction, The process of contraction continues till the calcium ions are pumped back to the sarcoplasmic cisternae and resulting in the unmasking of actin filaments... 2 Edit Delete
14785 The binding of calcium to troponin actually indicates 6 608 Recommended Questions Unmasking of Myosin binding site over meromyosin, Unmasking of Myosin binding site over actin... 2 Edit Delete
14784 Contractile unit of muscle is part of myofibril between 6 608 Recommended Questions Z-line and I-band, Z-line and Z-line... 2 Edit Delete
14783 The binding of troponin on actin filaments actually unmasks the..... 6 608 Recommended Questions Active site for Tropomyosin, Active site for ATP... 3 Edit Delete
14782 The ATPase activity of the myosin head is dependent on: 6 608 Recommended Questions Magnesium ions, Manganese ions... 3 Edit Delete
14781 Put the following phrases in proper order to describe what occurs at the neuromuscular junction to trigger muscle contraction: 6 608 Recommended Questions II, IV, I, VI, VII, III, V, II, IV, VI, I, VII, III, V... 2 Edit Delete
14780 Neuromuscular junction or motor endplate is 6 608 Recommended Questions The junction between a motor neuron and the sarcolemma of the muscle fiber, The junction between a motor neuron and sensory neuron... 1 Edit Delete
14779 Consider the following statements: I. A motor neuron along with the muscle fibres connected to it constitute a motor unit II. The neurotransmitter released at the neuro-muscular junction is Acetylcholine. III. Myosin head has ATPase activity. Which of the above statements are true? 6 608 Recommended Questions I and II only, I and III only... 4 Edit Delete
14778 Ca²⁺ bind _______ in the skeletal muscles and leads to exposure of the binding site for _______ on the filament _______: 6 608 Recommended Questions Troponin, myosin, actin, Troponin, actin, relaxin... 1 Edit Delete
14777 Muscle Contraction is initiated by 6 608 Recommended Questions A signal sent by CNS via a motor neuron, A signal sent by PNS via a motor neuron... 1 Edit Delete
14776 A neural signal reaching this junction releases a neurotransmitter. Which generates an action potential in the... 6 608 Recommended Questions Acetyl choline, Sarcolemma, Inositol, Sarcolemma... 1 Edit Delete
14775 The H-Zone in the skeletal muscle fibre is due to 6 608 Recommended Questions the central gap between actin filaments extending through myosin filaments in the A-band, extension of myosin filaments in the central portion of the A-band... 1 Edit Delete
14774 Which of the following is not true regarding Z line? 6 608 Recommended Questions Made up of elastic fibres, Present in centre of each I band... 4 Edit Delete
14773 Which of the following is not true regarding M line? 6 608 Recommended Questions Thin membrane, Fibrous... 4 Edit Delete
14772 Which of the following is correct about the given figure? 6 608 Recommended Questions The length of the thick and thin myofilaments has changed., Length of both anisotropic and isotropic band has changed.... 3 Edit Delete
14771 Light bands (thin filaments) contain actin and are called: 6 608 Recommended Questions A-bands or Isotropic band, A-bands or Anisotropic bands... 3 Edit Delete
14770 Choose the letter from the figure that most appropriately corresponds to the structure: 6 608 Recommended Questions I - E, II - D, III - F, IV - G, V - B, VI - C, VII - A, I - E, II - D, III - C, IV - G, V - B, VI - A, VII - F... 1 Edit Delete
14769 Read the following A to D statements and select the option that contains both correct statements: A. Z-line is present in the centre of the light band. B. Thin filaments are firmly attached to the M-line C. The central part of thick filaments, not overlapped by thin filaments is called Z-band D. Light band contains only thin filaments 6 608 Recommended Questions A and D, B and C... 1 Edit Delete
14768 During muscular contraction, which of the following events occur? (i) H-zone disappears (ii) A band widens (iii) I band shortens (iv) Width of A band is unaffected (v) M line and Z line come closer 6 608 Recommended Questions (i),(iii),(iv) and (v), (i),(ii) and (v)... 1 Edit Delete
14767 Dark bands (thick filaments) contain myosin and are called: 6 608 Recommended Questions A-bands or Isotropic band, A-bands or Anisotropic bands... 2 Edit Delete
14766 Match Column-I with Column-II: Column-I A. Structural and functional unit of a myofibril B. Protein of thin filament C. Protein of thick filament D. The central part of thick filament not overlapped by thin filament Column-II I. H-zone II. Myosin III. Sarcomere IV. Actin 6 608 Recommended Questions A - I, B - II, C - III, D - IV, A - I, B - III, C - II, D - IV... 4 Edit Delete
14765 Unit of contraction in a muscle fiber is: 6 608 Recommended Questions Sarcomere, Muscle fiber... 1 Edit Delete
14764 Sarcomere is described as the part of myofibril between two 6 608 Recommended Questions M-lines, Z-lines... 2 Edit Delete
14763 Each myosin filament comprises all the following, except 6 608 Recommended Questions Each myosin filament is a polymerised protein, many monomeric proteins called meromyosins constitute one thick filament, Actin binding sites and ATP binding sites are present on the cross-arm which is part of HMM... 3 Edit Delete
14762 …………… projects outwards at regular ……… from each other from the surface of polymerized Myosin Filaments and is also known as ……… 6 608 Recommended Questions Head and short arm, angle, cross arm, Head and short arm, distance, cross arm... 3 Edit Delete
14761 Choose the correct statement. 6 608 Recommended Questions In a resting muscle fibre, a subunit of troponin masks the active binding sites on myosin for actin filaments, The myosin monomer called meromyosin has a globular head which has binding sites for ATP and active sites for actin... 2 Edit Delete
14760 The globular head of the myosin filament has active site/s for binding to: I. ATP II. the binding site for actin filament III. Calcium 6 608 Recommended Questions Only I, Only I and II... 2 Edit Delete
14759 In a myosin molecule HMM (heavy meromyosin) is present in (i) Globular head (ii) Short arm (iii) Myosin tail 6 608 Recommended Questions (i), (ii), (iii), (i) only... 3 Edit Delete
14758 Which one of the following pairs of chemical substances, is correctly categorised? 6 608 Recommended Questions Pepsin and prolactin - Two digestive enzymes secreted in the stomach, Troponin and myosin - Complex proteins in striated muscles... 2 Edit Delete
14757 Myosin filaments are:- 6 608 Recommended Questions thin filament, found only in I band... 4 Edit Delete
14756 Following is the figure of actin (thin) filaments. Identify A, B and C: 6 608 Recommended Questions A - Tropomyosin, B - Troponin, C - F-actin, A - Troponin, B - Myosin, C - Tropomyosin... 4 Edit Delete
14755 In the rest state, a subunit of Troponin masks 6 608 Recommended Questions Active binding sites for actin on the myosin filaments, Active binding sites for myosin on the myosin filaments... 3 Edit Delete
14754 Skeletal muscles appear striated due to the presence of two characteristic proteins in alternating dark and light bands. Which of the following is a correct match of the protein with its light refractive property and color? 6 608 Recommended Questions Myosin Light Anisotropic, Actin Dark Anisotropic... 4 Edit Delete
14753 The above figure is related with myosin monomer (meromyosin). Identify A to C: 6 608 Recommended Questions A - head, B - cross arm, C - GTP binding sites, A - head, B - cross arm, C - Ca²⁺ binding sites... 3 Edit Delete
14752 The head part of the HMM of muscle fiber is 6 608 Recommended Questions Globular, Triangular... 1 Edit Delete
14751 The globular head is/has 6 608 Recommended Questions An active ATPase enzyme, Binding sites for ATP... 4 Edit Delete
14750 Given below is a diagrammatic representation of anatomy of a muscle fibre. Choose the correct option with respect to the labelled structure. 6 608 Recommended Questions 'A' consists of actin protein only, 'B' consists of myosin protein only... 4 Edit Delete
14749 Cardiac muscles can be best defined as: 6 608 Recommended Questions Many cardiac muscle cells assemble in a branching pattern., Single cardiac muscle fibre enclosed by connective tissue layer.... 1 Edit Delete
14748 Myofibrils has not 6 608 Recommended Questions Alternate dark and light bands, Striated appearance because of distribution pattern of two important proteins- Actin and Myosin... 4 Edit Delete
14747 Skeletal muscle bundles [fascicles] are held together by a common connective tissue layer called: 6 608 Recommended Questions Perimysium, Endomysium... 3 Edit Delete
14746 The type of muscles present in our: 6 608 Recommended Questions upper arms are smooth muscle fibres fusiform in shape, heart is involuntary and unstriated smooth muscles... 4 Edit Delete
14745 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I I. Smooth muscle II. Skeletal muscle III. Cardiac muscle Column II 1. Striated, voluntary 2. Non-Striated, involuntary 3. Striated, Involuntary Codes: I II III 6 608 Recommended Questions 1 2 3, 3 1 2... 3 Edit Delete
14744 Which of the following is not a feature of Visceral muscles? 6 608 Recommended Questions Located in visceral organs of the body like the alimentary canal, No striations and smooth in appearance... 4 Edit Delete
14743 All the muscles have the following special properties, except 6 608 Recommended Questions Excitability, Extensibility... 3 Edit Delete
14742 Which of the following is not a feature of skeletal muscles? 6 608 Recommended Questions Are associated with skeletal components of the body, Striped appearance... 4 Edit Delete
14741 Based on location how many types of muscles are reported? 6 608 Recommended Questions Three, skeletal, visceral and cardiac, Two, smooth and skeletal... 1 Edit Delete
14740 Which of the following statements is wrong? 1. Movement is one of the significant features of living beings 2. Streaming of protoplasm in the unicellular organisms like Amoeba is a simple form of movement 3. Animals and plants exhibit a wide range of movements 4. Movement of cilia, flagella and tentacles is limited to lower organisms 6 608 Recommended Questions Movement is one of the significant features of living beings, Streaming of protoplasm in the unicellular organisms like Amoeba is a simple form of movement... 4 Edit Delete
14739 Cilia in paramecium do not help in 6 608 Recommended Questions Movement of food through cytopharynx, Locomotion... 3 Edit Delete
14738 Which of the following is not correct? 1. Cilia and flagella are the outgrowths of the cell membrane 2. Flagellar movements help in the swimming of spermatozoa, maintenance of water current in the canal system of sponges 3. Locomotion of Protozoan like Euglena is also carried by cilia 4. 40-50 percentage of body weight of a human adult is contributed by muscles 6 608 Recommended Questions Cilia and flagella are the outgrowths of the cell membrane, Flagellar movements help in the swimming of spermatozoa, maintenance of water current in the canal system of sponges... 3 Edit Delete
14737 Which of the following includes non-muscular movement? 6 608 Recommended Questions (a) and (b), (a), (c) and (d)... 3 Edit Delete
14736 Which of the following statements is not correct? 6 608 Recommended Questions All locomotions are movements., All movements are not locomotions... 4 Edit Delete
14735 Which of the following statements is not correct? 6 608 Recommended Questions All locomotions are movements., All movements are not locomotions... 4 Edit Delete
14734 Cells of Human body exhibit which type of movement: 6 608 Recommended Questions Amoeboid, Muscular... 4 Edit Delete
14733 Locomotion can be 6 608 Recommended Questions Movement of tongue, Movement of eyelids... 3 Edit Delete
14732 Based on location how many types of muscles are reported? 6 608 Recommended Questions Three, skeletal, visceral and, cardiac, Two, smooth and skeletal... 1 Edit Delete
14731 Passage of ova through the female reproductive tract is facilitated mainly by 6 608 Recommended Questions Amoeboid movement, Ciliary movement... 2 Edit Delete
14730 Which of the following is not true about ribs of human? 6 608 Recommended Questions 12 pairs of ribs, Thin flat bone, connected dorsally to the sternum and ventrally to the vertebral column... 2 Edit Delete
14729 The tentacles of Hydra do not help in 6 608 Recommended Questions Capturing prey, Locomotion... 3 Edit Delete
14728 136 6 607 Recommended Questions 1, 2... 1 Edit Delete
14727 Match each item in Column I with one in Column II and choose the correct option from the codes given below: Column I A. Filtration fraction B. Normal Blood Urea Level C. GFR Column II a. 19% b. 23% c. 70-100 mg % d. 15-40 mg % e. 180 ml/min f. 125 ml/min 6 607 Recommended Questions b d f, a d f... 2 Edit Delete
14726 Which of the following cannot be expected in the filtrate when it arrives to descending limb of Henle's loop? 6 607 Recommended Questions I, II, III & IV, I only... 4 Edit Delete
14725 Which of the following statements about the kidneys is incorrect? 6 607 Recommended Questions They consume over 20% of the oxygens used by the body at rest., Approximately 1200ml of fluid is filtrated by the kidneys each day.... 2 Edit Delete
14724 Due to insufficient filtration in the Bowman's capsule, all are likely to happen except: 6 607 Recommended Questions Accumulation of fluid in the body, Increase in blood pressure... 4 Edit Delete
14723 Which of the following layers comes first when we see from glomerular side? 6 607 Recommended Questions Endothelium, Epithelium of Bowman's capsule... 1 Edit Delete
14722 Read the following statements a. Glucose is partially absorbed in the PCT. b. ADH helps in diluting the urine by acting on DCT and collecting ducts c. In cortical nephrons, vasa recta are absent or highly reduced. d. In a healthy person, 180 litre glomerular filtrate is formed per day by the kidney. Which statements are incorrect with respect to a healthy adult human? 6 607 Recommended Questions c and d only, a and b only... 2 Edit Delete
14721 The name of the blood vessel delivering blood directly to the glomerulus is the 6 607 Recommended Questions renal artery, interlobar artery... 4 Edit Delete
14720 In 5 minutes how much blood is filtered by kidneys? 6 607 Recommended Questions 5700 mL, 4400 mL... 1 Edit Delete
14719 Which of the following is not correct with respect to urine formed by an adult human? 6 607 Recommended Questions Excretes an average 2 to 2.5 L of urine per day, Light yellow colored watery fluid... 1 Edit Delete
14718 Which one of the following correctly explains the function of a specific part of a human nephron? 6 607 Recommended Questions Henle's loop - most reabsorption of the major substances from the glomerular filtrated, Distal convoluted tubule - reabsorption of ions into the surrounding blood capillaries... 4 Edit Delete
14717 Podocytes are not 6 607 Recommended Questions Arranged in intricate manner, Left with some spaces called filtration slits... 4 Edit Delete
14716 What three physical barriers must filtrate cross within the renal corpuscle? 6 607 Recommended Questions podocytes, pedicels, and filtration slits, macula densa, vascular pole, and parietal layer of glomerular capsule... 3 Edit Delete
14715 Glomerular Filtration is not 6 607 Recommended Questions Ultra filtration, Occurs via three layers... 4 Edit Delete
14714 How much blood is pumped out by each ventricle of the heart in a minute goes to kidney? 6 607 Recommended Questions 1/5th, 1/3 rd... 1 Edit Delete
14713 70 to 80 percent of electrolytes and water are reabsorbed in 6 607 Recommended Questions Distal convoluted tubule, Proximal convoluted tubule... 2 Edit Delete
14712 During counter current mechanism, interstitial medullary concentration can be increased up to 4 times due to 6 607 Recommended Questions i, ii, iii & iv, i & ii... 2 Edit Delete
14711 Which of the following is not important for maintaining the increasing osmolarity in the medullary interstitium? 6 607 Recommended Questions The proximity between Henle's loop and vasa recta, Counter current flow in two limbs of tubule... 2 Edit Delete
14710 During the concentration of urine by the human kidneys, NaCl is returned to the medullary interstitium by the: 6 607 Recommended Questions Descending limb of the loop of Henle, Ascending limb of the loop of Henle... 4 Edit Delete
14709 In order to produce concentrated urine, large amounts of water can be reabsorbed from: 6 607 Recommended Questions Ascending limb of loop of Henle, Descending limb of loop of Henle... 4 Edit Delete
14708 What is used as an osmolyte in human beings to increase medullary interstitial osmolality during concentration of urine? 6 607 Recommended Questions TMAO, Urea... 2 Edit Delete
14707 Urea will enter the 6 607 Recommended Questions Thin segment of AL of LOH, Thick segment of AL of LOH... 1 Edit Delete
14706 Mark the incorrect statement with respect to counter current mechanism 6 607 Recommended Questions Osmolarity of filtrate increases while moving down the descending limb of loop of Henle, There will be no urine formation if loop of Henle is absent in mammalian nephrons... 2 Edit Delete
14705 Match the terms given in Column-I with their physiological processes given in column-II and choose the correct answer: Column-I (A) Proximal convoluted tubule (B) Distal convoluted tubule (C) Henle’s loop (D) Counter-current mechanism (E) Renal corpuscle Column-II (i) Formation of concentrated urine (ii) Filtration of blood (iii) Reabsorption of 70-80% of electrolytes (iv) Ionic balance (v) Maintainance of a concentration gradient in the medulla 6 607 Recommended Questions (A)-(iii); (B)-(v); (C)-(iii); (D)-(ii); (E)-(i), (A)-(iii); (B)-(iv); (C)-(i);(D)-(v);(E)-(ii)... 2 Edit Delete
14704 Choose the correct statement 6 607 Recommended Questions ADH deficiency leads to diabetes mellitus, Kidneys produce urine more concentrated than initial filtrate... 2 Edit Delete
14703 Which of the following is the correct way of writing the unit of osmolarity? 6 607 Recommended Questions Mosmo/L, mOsmol/L... 2 Edit Delete
14702 Which of the following organisms have the capacity to concentrate urine? 6 607 Recommended Questions Mammals, Fishes... 1 Edit Delete
14701 Which of the following is not a part of urine formation? 6 607 Recommended Questions Glomerular Filtration, Reabsorption... 4 Edit Delete
14700 How many times can human urine be concentrated in counter current mechanism? 6 607 Recommended Questions Four times, Five times... 1 Edit Delete
14699 The NaCl which is transported by the ascending limb of Henle's loop which is exchanged with the....... 6 607 Recommended Questions Ascending limb of vasa recta, Descending limb of vasa recta... 2 Edit Delete
14698 In the given diagram what would be the value of the osmolality of fluid at points A and B respectively? 6 607 Recommended Questions 1000 and 1000, 1200 and 1000... 4 Edit Delete
14697 Kidney matrix retains some amount of urea to 6 607 Recommended Questions Maintain a desired osmolarity, Maintain metabolism... 1 Edit Delete
14696 The osmotic concentration of glomerular filtrate is the highest at the bottom of the U-shaped Henle's loop. It is about __________ mOsmL⁻¹ 6 607 Recommended Questions 300, 600... 4 Edit Delete
14695 Ketonuria: Ketone bodies in urine:: Uremia: _______. Complete the analogy. 6 607 Recommended Questions Elevated urea in circulating blood, Excretion of urea in urine... 1 Edit Delete
14694 What is Glomerulonephritis? 6 607 Recommended Questions Accumulation of glomus at the level of roots in plants, Increasing Glomerular capillaries... 3 Edit Delete
14693 Sebaceous gland secretion mainly contains 6 607 Recommended Questions Amino acids and glucose, Sterols and lactic acid... 4 Edit Delete
14692 How much Carbon dioxide is removed by lungs? 6 607 Recommended Questions 200mL/second, 200mL/minute... 2 Edit Delete
14691 Which pair is correct: 6 607 Recommended Questions Sweat = temperature regulation, Saliva = sense of food taste... 1 Edit Delete
14690 The cleared blood is pumped back to the body through a....... after adding...... it 6 607 Recommended Questions Vein, Heparin, Vein, Anti-Heparin... 2 Edit Delete
14689 A person passes lot of dilute urine and drinks a lot of water but does not have glycosuria. He is most likely suffering from: 6 607 Recommended Questions Type 1 diabetes mellitus, Type 2 diabetes mellitus... 4 Edit Delete
14688 The blood drained from a convenient......... is pumped into a dialysing unit called......... 6 607 Recommended Questions Vein, artificial Kidney, Artery, artificial Kidney... 2 Edit Delete
14687 How much of urea is excreted out per day? 6 607 Recommended Questions 50g, 28g... 2 Edit Delete
14686 Haemodialysis 6 607 Recommended Questions A process for removal of extra blood, A process for removal of extra cellular fluid... 3 Edit Delete
14685 Which of the following is not associated with micturition reflex? 6 607 Recommended Questions Relaxation of urethral sphincter, Contraction of detrusor muscle... 3 Edit Delete
14684 Micturition reflex is 6 607 Recommended Questions Hormonal mechanism to control Micturition, Neural mechanism to control Micturition... 2 Edit Delete
14683 Analysis of urine helps in clinical diagnosis of many metabolic disorder as well as malfunctioning of kidney. Given below are some disorders a. Glycosuria b. Ketonuria c. Haematuria d. Proteinuria Choose the correct option which indicates disorders of diabetes mellitus if not controlled? 6 607 Recommended Questions a only, a & b only... 2 Edit Delete
14682 Micturition does not involve 6 607 Recommended Questions Relaxation of urethral sphincter, Contraction of urinary bladder... 4 Edit Delete
14681 For the ejection of urine the voluntary signal is given by 6 607 Recommended Questions ANS, CNS... 2 Edit Delete
14680 During the process of micturition: 6 607 Recommended Questions Urinary bladder Contracts, Urethral sphincter Contracts, Urinary bladder Contracts, Urethral sphincter Relaxes... 2 Edit Delete
14679 Substance 'X' which converts angiotensinogen to angiotensin I is secreted by 6 607 Recommended Questions Wall of heart, Adrenal cortex... 4 Edit Delete
14678 The amount of urine produced is generally increased when there is: 6 607 Recommended Questions increased ADH secretion, increased atrial natriuretic hormone secretion... 2 Edit Delete
14677 Regarding the control of water balance by the kidneys: 6 607 Recommended Questions The renal medulla has an osmotic gradient that decreases from the border with the cortex to the renal papilla., ADH is secreted by anterior pituitary in response to a decrease in the osmolality of the blood.... 4 Edit Delete
14676 Which of the following does not favor the formation of large quantities of dilute urine? 6 607 Recommended Questions Alcohol, Caffeine... 3 Edit Delete
14675 This hormone promotes loss of sodium and water in urine, thereby increasing urinary output. This hormone is released from 6 607 Recommended Questions JG cells, Liver... 4 Edit Delete
14674 Atrial natriuretic hormone (ANH) will promote a(n) _______ in the excretion of sodium and water; thus _______ blood volume and blood pressure. 6 607 Recommended Questions decrease, decreasing, decrease; increasing... 3 Edit Delete
14673 Which one of the following statements is correct with respect to kidney function regulation? 6 607 Recommended Questions Exposure to cold temperatures stimulates ADH release, An increase in glomerular blood flow stimulates the formation of angiotensin II... 4 Edit Delete
14672 Which of the following causes an increase in sodium reabsorption in distal convoluted tubule? 6 607 Recommended Questions Increase in aldosterone levels, Increase in antidiuretic hormone levels... 1 Edit Delete
14671 A fall in glomerular filtration rate (GFR) activates: 6 607 Recommended Questions Adrenal cortex to release aldosterone, Adrenal medulla to release adrenaline... 4 Edit Delete
14670 Which area actually secretes renin into the blood? 6 607 Recommended Questions macula densa, juxtaglomerular apparatus... 3 Edit Delete
14669 Juxtaglomerular apparatus is a special sensitive region formed by cellular modifications in the: 6 607 Recommended Questions DCT and Efferent arteriole at the point of their contact, DCT and the Afferent arteriole at the point of their contact... 2 Edit Delete
14668 Which of the following physiological changes is not associated with Renin-Angiotensin-Aldosterone system? 6 607 Recommended Questions Increase in GFR, Increase in blood pressure... 4 Edit Delete
14667 JGA is formed by 6 607 Recommended Questions Cellular modifications in the DCT and efferent arterioles' contact region, Cellular modifications in the PCT and efferent arterioles's contact region... 4 Edit Delete
14666 The targets of angiotensin II are blood vessels and: 6 607 Recommended Questions nerves, adrenal cortex... 2 Edit Delete
14665 An increase in the blood flow to the atria of the heart can cause the release of: 6 607 Recommended Questions Erythropoietin, Atrial natriuretic factor... 2 Edit Delete
14664 The greater the number of blood vessels dilated, the _______. 6 607 Recommended Questions higher the blood pressure, lower the blood pressure... 2 Edit Delete
14663 Within the renal tubule, two hormones play a role in determining the final volume and sodium concentration of the urine. The hormone ___ regulates sodium reabsorption, while _____ regulates water reabsorption. 6 607 Recommended Questions aldosterone; antidiuretic hormone (ADH), cortisol; atrial natriuretic peptide... 1 Edit Delete
14662 Concentration of urine depends upon which organ: 6 607 Recommended Questions Bowman's capsule, Length of Henle's loop... 2 Edit Delete
14661 If Henle's loop was absent from mammalian nephron, which of the following is to be expected: 6 607 Recommended Questions There will be no urine formation, There will be hardly any change in the quality and quantity of urine formed... 4 Edit Delete
14660 The concentrated filtrate gets diluted due to 6 607 Recommended Questions Passage of electrolytes to the medullary fluid, Passage of water to the inner side of tubules... 1 Edit Delete
14659 Excretion of dilute urine requires 6 607 Recommended Questions relative permeability of the distal tubule to water, transport of sodium and chloride ions out of the descending loop of Henle... 4 Edit Delete
14658 Describe urine in relationship to glomerular filtration tubular reabsorption and tubular secretion urine: 6 607 Recommended Questions glomerular filtration + tubular reabsorption + tubular secretion, glomerular filtration - tubular reabsorption -tubular secretion... 4 Edit Delete
14657 Complete the analogy with respect to reabsorption PCT: Glucose and amino acids:: DCT: _____ 6 607 Recommended Questions K⁺ and H⁺, H⁺ and HCO₃⁻... 3 Edit Delete
14656 The part of nephron involved in active reabsorption of sodium is 6 607 Recommended Questions distal convoluted tubule, proximal convoluted tubule... 2 Edit Delete
14655 Which is correctly matched? 1. Bowman's capsule - Ultrafiltration and secretion 2. Collecting duct - absorption of large amount of Urea 3. Ascending part of loop of Henle - Secretion of Glucose and amino acids 4. DCT - Reabsorption of HCO₃⁻ 6 607 Recommended Questions 1, 2... 4 Edit Delete
14654 Which of the following process of urine formation takes place all along the renal tubule and collecting duct? 6 607 Recommended Questions Ultrafiltration and tubular reabsorption, Ultrafiltration and tubular secretion... 3 Edit Delete
14653 Urinary excretion is equivalent to: GF = Glomerular filtration. TR = Tubular reabsorption. TS = Tubular secretion. 6 607 Recommended Questions GF + TR + TS, GF - (TR + TS)... 3 Edit Delete
14652 Which of the following statement is correct with respect to excretion? 6 607 Recommended Questions Our lungs remove large amount of CO₂ (180 litres/day) and also significant quantity of water everyday, The ascending limb is permeable to water and also allows transport of electrolytes actively or passively... 3 Edit Delete
14651 Reabsorption is minimum of which of the following segments of tubule? 6 607 Recommended Questions Ascending limb, PCT... 1 Edit Delete
14650 Which of the following substances are not reabsorbed by passive means of transport in tubules? 6 607 Recommended Questions Water, Nitrogenous waste... 3 Edit Delete
14649 The process of reabsorption occurs is verified by 6 607 Recommended Questions Comparison between urine released and Filtrate formed, Release of Renin... 1 Edit Delete
14648 Tubular secretion does not allow 6 607 Recommended Questions Ionic balance of body fluids, Acid base balance of body fluids... 3 Edit Delete
14647 Which one of the following is correct regarding the excretion? 6 607 Recommended Questions Large amount of water from renal filtrate is reabsorbed in DCT and a less amount is reabsorbed by PCT., The descending limb of loop of Henle is almost impermeable to salts.... 2 Edit Delete
14646 This segment allows passage of small amounts of urea into the medullary interstitium to keep up the osmolarity. Which segment does the statement suggest? 6 607 Recommended Questions Descending limb of Henle's loop., Ascending limb of Henle's loop.... 3 Edit Delete
14645 The process of reabsorption is carried by 6 607 Recommended Questions Tubular endothelial cells, Tubular epithelial cells... 2 Edit Delete
14644 Which of the following part of the nephron is not involved in tubular secretion? 6 607 Recommended Questions Bowman's capsule, PCT... 1 Edit Delete
14643 The proximal convoluted tubule is lined by the: 6 607 Recommended Questions Simple cuboidal epithelium, Simple columnar epithelium... 3 Edit Delete
14642 The majority of water and salt filtered into Bowman's capsule is reabsorbed by: 6 607 Recommended Questions the brush border of the transport epithelia of the proximal tubule, diffusion from the descending limb of the loop of Henle into the hypertonic interstitial fluid of the medulla... 1 Edit Delete
14641 Selective secretion of which of the following ions does not take place in PCT? 6 607 Recommended Questions Hydrogen ions, Ammonia... 4 Edit Delete
14640 On average, what amount of urea is excreted out per day by a healthy human being? 6 607 Recommended Questions 5-10 gm, 15-20 gm... 3 Edit Delete
14639 Which of the following statements is correct? 6 607 Recommended Questions The ascending limb of loop of Henle is impermeable to water, The descending limb of loop of Henle is impermeable to water... 1 Edit Delete
14638 Which one of the following statements in regard to excretion by the human kidneys is correct? 6 607 Recommended Questions Descending limb of loop of Henle is impermeable to water, Distal convoluted tubule is incapable of reabsorbing HCO₃... 3 Edit Delete
14637 Which of the following is not reabsorbed by PCT? 6 607 Recommended Questions Glucose, Amino acid... 3 Edit Delete
14636 Which of the following is almost completely reabsorbed by active reabsorption in the nephrons of a healthy person? 6 607 Recommended Questions Urea, Creatinine... 3 Edit Delete
14635 Which of the following substances are not reabsorbed by active means of transport? 6 607 Recommended Questions Glucose, Amino Acids... 3 Edit Delete
14634 Renin 6 607 Recommended Questions Stimulates the glomerular blood flow, Suppresses the GFR... 1 Edit Delete
14633 The process of reabsorption occurs by 6 607 Recommended Questions Active mechanism, Passive mechanism... 3 Edit Delete
14632 Vasa recta is 6 607 Recommended Questions A minute vessel, A minute artery... 1 Edit Delete
14631 Which section of the nephron follows the ascending limb of the loop of Henle? 6 607 Recommended Questions descending limb of the loop, proximal convoluted tubule... 3 Edit Delete
14630 In the accompanying diagram of a human nephron the functional parts are labelled as A, B, C, D, E. Study the diagram to answer the questions given: P: Active secretion of H+ and K+ into the filtrate occurs in which parts? Q: Conditional reabsorption of Na+ and water is a function of R: Reabsorption of water is minimum in which segment? Choose the correct option: 6 607 Recommended Questions B, D C E, A, B, C C E... 3 Edit Delete
14629 Which of the parts labeled A–D are correctly identified with their functions? 6 607 Recommended Questions A–Afferent arteriole – Carries the blood away from the glomerulus towards the renal vein, B–Brush border – Create minute spaces epithelium for the filtration of blood into the Bowman's capsule... 4 Edit Delete
14628 The concentrations of which plasma electrolyte is not regulated mainly by the kidneys? 6 607 Recommended Questions hydrogen, potassium... 3 Edit Delete
14627 The network of peritubular capillaries is formed by 6 607 Recommended Questions Efferent Arteriole, Afferent Arteriole... 1 Edit Delete
14626 Vasa recta in cortical nephrons: 6 607 Recommended Questions Arises from afferent arteriole rather than efferent arteriole, Does not get involved in counter current exchange with loop of Henle... 4 Edit Delete
14625 Our excretory system has 6 607 Recommended Questions Two million nephrons, One million nephrons... 1 Edit Delete
14624 Our excretory system has 6 607 Recommended Questions Two million nephrons, One million nephrons... 1 Edit Delete
14623 Which of the following is not a part of nephron? 6 607 Recommended Questions Glomerulus, PCT... 3 Edit Delete
14622 Which of the following is correct about juxtamedullary nephrons? 6 607 Recommended Questions They lack vasa recta, They are about 85% of the nephrons... 4 Edit Delete
14621 The parts of nephron situated in cortical region of kidney are 6 607 Recommended Questions Loop of Henle, PCT, and collecting duct, Collecting duct, PCT, and malpighian corpuscle... 4 Edit Delete
14620 The blood from the glomerulus is carried away by: 6 607 Recommended Questions Afferent arteriole, Efferent arteriole... 2 Edit Delete
14619 Nephron is 6 607 Recommended Questions a structural unit of the kidney, a functional unit of the kidney... 3 Edit Delete
14618 If one goes from inside to outside then which of the following parts comes first? 6 607 Recommended Questions Hilum, Calyces... 2 Edit Delete
14617 If one goes from the outer side to the inside, which of the following parts comes first? 6 607 Recommended Questions Hilum, Calyces... 1 Edit Delete
14616 The path of urine has which of the following part of kidney as the first organ to be encountered (other than nephron and collecting Duct)? 6 607 Recommended Questions Renal calyces, Medullary pyramids... 2 Edit Delete
14615 Column of Bertini is a part of 6 607 Recommended Questions Cortex, Medulla... 1 Edit Delete
14614 Which one of the following statements is incorrect? 6 607 Recommended Questions The medullary zone of the kidney is divided into a few conical masses called medullary pyramids projecting into calyces., Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis.... 2 Edit Delete
14613 Medullary pyramids project into 6 607 Recommended Questions Calyces, Medulla... 1 Edit Delete
14612 Which statement does not correctly describe the path of urine flow? 6 607 Recommended Questions ducts in each renal papilla drain into a minor calyx, the minor calyces merge to form a major calyx... 4 Edit Delete
14611 Match the items in Column - I with those in Column - II: Column I (a) Podocytes (b) Protonephridia (c) Nephridia (d) Renal calculi Column II (i) Crystallised oxalate (ii) Annelids (iii) Amphioxus (iv) Filtration slits Select the correct option from the following: 6 607 Recommended Questions (iii) (iv) (ii) (i), (iii) (ii) (iv) (i)... 3 Edit Delete
14610 Identify the parts labeled A, B, C, and D in the given diagram of the kidney. 6 607 Recommended Questions Medullary pyramid Renal Artery Renal capsule Papilla, Cortex Renal vein Glisson's capsule Calyx... 4 Edit Delete
14609 Glomerulus along with Bowman's Capsule is called as 6 607 Recommended Questions Malpighian body, Renal capsule... 1 Edit Delete
14608 Which of the following will take away blood from glomerulus? 6 607 Recommended Questions Renal artery, Renal vein... 3 Edit Delete
14607 The extensions of cortex between the medullary pyramids are called 6 607 Recommended Questions Renal columns of Bellini, Renal columns of Bertini... 2 Edit Delete
14606 Figure shows a human urinary system with structures labelled A to D. Select option which correctly identifies them and gives their characteristics and/or functions. 6 607 Recommended Questions B-pelvis - broad funnel-shaped space inner to the hilum, directly connected to loops of Henle., C- Medulla- inner zone of kidney and contains complex nephrons.... 4 Edit Delete
14605 Kidneys are situated in 6 607 Recommended Questions Between the last thoracic and 5th lumbar vertebra, Between the last thoracic and 3rd lumbar vertebra... 2 Edit Delete
14604 Afferent arteriole is a fine branch of 6 607 Recommended Questions Renal vein, Renal artery... 2 Edit Delete
14603 The measurements of human kidneys are not 6 607 Recommended Questions 10-12 cm in length, Kidneys weigh 240-340 g... 2 Edit Delete
14602 Which of the following has no role in the elimination of excretory wastes? 6 607 Recommended Questions Kidneys, Lungs... 4 Edit Delete
14601 Human excretory system does not involve 6 607 Recommended Questions Urethra, Vestibule... 2 Edit Delete
14600 Which of the following is not the primary function of protonephridia? 6 607 Recommended Questions Ionic volume regulation, Fluid volume regulation... 4 Edit Delete
14599 Which of the following has not the protonephridia as an excretory organ? 6 607 Recommended Questions Rotifers, Amphioxus... 4 Edit Delete
14598 The production of urea and uric acid is because of 6 607 Recommended Questions Conservation of water, Terrestrial adaptation... 3 Edit Delete
14597 Which one of the following characteristics is common in both humans and adult frogs? 6 607 Recommended Questions Internal fertilization, Nucleated RBCs... 3 Edit Delete
14596 Which is not correctly matched? 6 607 Recommended Questions Malpighian tubules - Cockroaches, Mosquito, Antennal glands - Planaria, Crab... 2 Edit Delete
14595 Consider the following statements: I. Many bony fishes, aquatic amphibians, and aquatic insects are ammonotelic. II. Mammals, many terrestrial amphibians, and cartilaginous fishes are ureotelic. III. Reptiles, birds, land snails, and insects are uricotelic. Which of the above statements are true? 6 607 Recommended Questions I and II only, I and III only... 4 Edit Delete
14594 Which of the following nitrogenous waste is least toxic and can be removed with minimum loss of water? 6 607 Recommended Questions Urea, Ammonia... 4 Edit Delete
14593 The principal nitrogenous excretory compound in humans is synthesised. 6 607 Recommended Questions in kidneys but eliminated mostly through liver, in kidneys as well as eliminated by kidneys... 4 Edit Delete
14592 170 6 606 Recommended Questions 1, 2... 1 Edit Delete
14591 Serum is- 6 606 Recommended Questions Blood – corpuscles, Blood – corpuscles – clotting factors... 4 Edit Delete
14590 Lymph differs from blood in possessing 6 606 Recommended Questions More proteins and less waste products, Less proteins and more waste products... 2 Edit Delete
14589 Which of the following are not correct: (i) Spleen is the graveyard for RBC (ii) All the mammals have biconcave RBCs (iii) Clotting factors present in plasma are in active form. (iv) All the substances released by platelets are involved in clotting only. 6 606 Recommended Questions (i), (iii), (iv), (ii), (iii), (iv)... 2 Edit Delete
14588 Which of the following sequence is correct in terms of abundance in blood? 6 606 Recommended Questions RBC > WBC > Platelets, WBC > RBC > Platelets... 3 Edit Delete
14587 In a mm³ of blood, the maximum number and minimum number of cells would be respectively 6 606 Recommended Questions WBCs, RBCs, RBCs, WBCs... 2 Edit Delete
14586 A decrease in plasma albumin levels is likely to affect: 6 606 Recommended Questions Clot formation, Oxygenation of hemoglobin... 3 Edit Delete
14585 Find out the false statement about blood? 6 606 Recommended Questions Special connective tissue, Fluid matrix... 4 Edit Delete
14584 How much percentage of water present in plasma? 6 606 Recommended Questions 6-8%, 90-92%... 2 Edit Delete
14583 Hemoglobin in healthy individual: 6 606 Recommended Questions 12–20 g/10 mL of blood, 12–14 g/100 mL of blood... 2 Edit Delete
14582 B and T forms, responsible for the immune response are the type of: 6 606 Recommended Questions Thrombocytes, Lymphocytes... 2 Edit Delete
14581 Serum differs from blood in 6 606 Recommended Questions lacking globulins, lacking albumins... 3 Edit Delete
14580 The number of RBC in a healthy individual are: 6 606 Recommended Questions 5 million to 5.5 million RBCs, 5 billion to 5.5 billion RBCs... 1 Edit Delete
14579 Oxygen carrier in human blood is 6 606 Recommended Questions Carbonic anhydrase, Haemoglobin... 2 Edit Delete
14578 The transport of respiratory gases is taken care by which blood component? 6 606 Recommended Questions RBC, WBC... 1 Edit Delete
14577 Haemoglobin is 6 606 Recommended Questions an oxygen carrier in human blood, a protein used as food supplement... 1 Edit Delete
14576 _______ is known as the graveyard of RBCs. 6 606 Recommended Questions Liver, Spleen... 2 Edit Delete
14575 The life span of the erythrocytes in humans is about 6 606 Recommended Questions 120 days, 150 days... 1 Edit Delete
14574 Medulla Oblangata regulates the Cardiac activity via 6 606 Recommended Questions CNS, ANS... 2 Edit Delete
14573 How do parasympathetic neural signals affect the working of the heart? 6 606 Recommended Questions Reduce both heart rate and cardiac output, Heart rate is increased without affecting the cardiac output... 1 Edit Delete
14572 The hormonal regulation of Cardiac output is 6 606 Recommended Questions mediated by adrenal cortex, mediated by adrenal medulla... 2 Edit Delete
14571 The sympathetic nerves give ______ neural signals to heart and increases the ______. 6 606 Recommended Questions stimulatory, ventricular contraction, inhibitory, stroke volume... 1 Edit Delete
14570 The neurocenter for the activity of the Heart is located in 6 606 Recommended Questions Pons, midbrain... 3 Edit Delete
14569 What is the effect of parasympathetic neural signals on Heart Activity? 6 606 Recommended Questions decreases the rate of heart beat, decreases the speed of conduction of action potential... 4 Edit Delete
14568 Read the following statements:- (1) Lymph is devoid of RBC (2) Exchange of nutrients, gasses etc, between blood and the tissue cell always occur through the lymph (3) Tissue fluid is also called as lymph. (4) Lymph is a colourless fluid containing all types of WBCs which are responsible for the immune response of the body. How many statements are correct? 6 606 Recommended Questions 2, 3... 2 Edit Delete
14567 Read the following: a. Lymph absorbs and transports fat from the intestine. b. Lymph nodes produce fibrinogen. c. Lymphatic capillaries present in the intestinal villi are known as lacteals. d. Lymph transports oxygen only. Which of these statements are true? 6 606 Recommended Questions a, c, b, d... 1 Edit Delete
14566 Match the following: p. Lymph q. Mixed Blood r. Fibrins s. Rh antigen e. Amphibians f. Tissue Fluid g. RBC h. Blood Clot 6 606 Recommended Questions p–g; q–h; r–e; s–f, p–f; q–e; r–h; s–g... 2 Edit Delete
14565 Arterial blood pressure in human beings is: 6 606 Recommended Questions 120 and 80 mm Hg, 150 and 100 mm Hg... 1 Edit Delete
14564 Which of the following is least likely to be caused by reduced blood/oxygen supply to heart muscles? 6 606 Recommended Questions Atherosclerosis, Myocardial ischaemia... 1 Edit Delete
14563 Congestion of the lungs is one of the main symptoms in: 6 606 Recommended Questions Hypotension, Coronary artery disease... 4 Edit Delete
14562 Heart disorder in which cardiac muscles are suddenly damaged by inadequate supply of blood is 6 606 Recommended Questions Heart failure, Cardiac arrest... 3 Edit Delete
14561 The normal blood pressure is ____ and if it gets increased, such disorder is called ____ 6 606 Recommended Questions 120/80; hypertension, 80/120; blood tension... 4 Edit Delete
14560 Congestion of _______ is the main symptom of _______. 6 606 Recommended Questions Blood vessels, Heart failure, Blood vessels, Cardiac Arrest... 3 Edit Delete
14559 Congestive Heart disease is another name for 6 606 Recommended Questions Heart failure, Cardiac Arrest... 1 Edit Delete
14558 Which one of the following statements is correct regarding blood pressure? 6 606 Recommended Questions 100/55 mmHg is considered an ideal blood pressure, 105/50 mmHg makes one very active... 3 Edit Delete
14557 Which one of the following match is wrong? 6 606 Recommended Questions Angina Pectoris – Acute chest pain, Heart Failure – Not enough blood supply to body... 4 Edit Delete
14556 Consider the following four statements (a-d) and select the option which includes all the correct information: (a) Coronary Artery disease, (CAD) often referred to as Atherosclerosis (b) Heart failure means when the heart muscle is suddenly damaged by an inadequate blood supply (c) High blood pressure leads to heart disease and also affects vital organs like brain and kidney (d) Angina occurs due to conditions that affect the blood flow 6 606 Recommended Questions Statements (b), (c) and (d), Statements (a), (b)... 4 Edit Delete
14555 Hypertension affects mainly organ: 6 606 Recommended Questions Intestine, Kidney... 2 Edit Delete
14554 The state of heart when it not pumping blood effective enough to meet the needs of the body is called 6 606 Recommended Questions CAD., Atherosclerosis.... 4 Edit Delete
14553 The resting pressure of healthy heart is 6 606 Recommended Questions 120 mmHg, 80 mmHg... 2 Edit Delete
14552 Which of the following disorders of circulatory system is not correctly stated? 6 606 Recommended Questions Hypertension – A sustained blood pressure of 140/90 or above, CAD – The lumen of coronary arteries become narrower due to deposits of calcium, fat, cholesterol and fibrous tissue... 3 Edit Delete
14551 Thickening of arteries due to cholesterol deposition is: 6 606 Recommended Questions atherosclerosis, rheumatic heart... 1 Edit Delete
14550 Complete stoppage of heart beat is termed as 6 606 Recommended Questions Heart attack, Heart block... 3 Edit Delete
14549 Choose the incorrect match (1) Cardiac arrest – Condition in which heart stops beating (2) T-wave – Represents depolarization of ventricles (3) SAN – Generates maximum number of action potentials (4) P-wave – Represents contraction of both atria 6 606 Recommended Questions Cardiac arrest – Condition in which heart stops beating, T-wave – Represents depolarization of ventricles... 2 Edit Delete
14548 In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart? 6 606 Recommended Questions P-depolarization of ventricles, R-repolarization of ventricles... 3 Edit Delete
14547 If one wants to analyse the detailed cardiac activity, the multiple leads are attached to– 6 606 Recommended Questions Wrist and arms, Abdomen... 3 Edit Delete
14546 The machine taking the reading of electrical activity of heart is known as 6 606 Recommended Questions Electrocardiogram, Electrocardiograph... 2 Edit Delete
14545 Given below is the ECG of a normal human. Which one of its components is correctly interpreted below? 6 606 Recommended Questions Peak P-Initiation of left atrial contraction only, Complex QRS-One complete pulse... 2 Edit Delete
14544 What does the T wave represent in ECG? 6 606 Recommended Questions Atrial Diastole, Atrial systole... 3 Edit Delete
14543 In ECG the ventricular contraction occurs 6 606 Recommended Questions Just after P wave and before Q wave., Just after Q wave but before T wave.... 2 Edit Delete
14542 By counting number of QRS complex, one may get which information? 6 606 Recommended Questions Rate of breathing, cardiac output... 3 Edit Delete
14541 Which of the following statements is not correct about ECG? 6 606 Recommended Questions P wave represents atrial depolarisation., QRS wave initiates ventricular contraction.... 4 Edit Delete
14540 The results of ECG are known as 6 606 Recommended Questions Electrocardiogram, Electrocardiograph... 1 Edit Delete
14539 The standard ECG is obtained by connecting the patient to the machine with how many leads? 6 606 Recommended Questions 4, 3... 2 Edit Delete
14538 The diagram given here is the standard ECG of a normal person. The P-wave represents the 6 606 Recommended Questions contraction of both the atria, initiation of the ventricular contraction... 1 Edit Delete
14537 Three lead configuration of ECG has arrangement? 6 606 Recommended Questions one to each wrist and one to right ankle., one to each ankle and one to right wrist.... 3 Edit Delete
14536 T-wave in electrocardiogram represents 6 606 Recommended Questions The return of ventricles from excited to normal state., Depolarisation of ventricles from normal to excited state.... 1 Edit Delete
14535 P wave and QRS complex in ECG respectively represent:- 6 606 Recommended Questions Atrial repolarization and Ventricular depolarization, Ventricular depolarization and Atrial repolarization... 3 Edit Delete
14534 The following is the diagrammatic representation of standard ECG. Identify the correct statement: 6 606 Recommended Questions P is caused by atrial repolarization., Q, when present, always shows myocardial ischemia.... 4 Edit Delete
14533 The deviation from the characteristic ECG indicates a possible abnormality; this information can be utilized in which field of Biology? 6 606 Recommended Questions Clinical Biology, Biotechnology... 1 Edit Delete
14532 In a surface ECG the QRS complex represents: 6 606 Recommended Questions Atrial depolarization, Atrial repolarization... 3 Edit Delete
14531 Coronary Artery Disease is also referred as 6 606 Recommended Questions Atherosclerosis, Angina... 1 Edit Delete
14530 The lumen of arteries gets _____ because _____ of _____ 6 606 Recommended Questions narrower, dissolution, fat, cholesterol and fibrous tissues., narrower, deposition, fat, cholesterol and fibrous tissues.... 2 Edit Delete
14529 During ECG of a healthy person, P-wave represents 6 606 Recommended Questions Ventricular depolarisation, Ventricular repolarisation... 4 Edit Delete
14528 Which of the following correctly explains a phase/event in cardiac cycle in a standard electrocardiogram? 6 606 Recommended Questions QRS complex indicates atrial contraction, QRS complex indicates ventricular contraction... 2 Edit Delete
14527 Angina is more common in– 6 606 Recommended Questions Young Men, Aged Women... 3 Edit Delete
14526 What does the QRS complex represent in ECG? 6 606 Recommended Questions Atrial Diastole, Atrial systole... 3 Edit Delete
14525 The action potential causes _____ and then the _____ to undergo _____ followed by _____. 6 606 Recommended Questions ventricles, atria, contraction, relaxation, atria, ventricles, contraction, relaxation... 2 Edit Delete
14524 Atrial systole 6 606 Recommended Questions Increases the flow of blood into the ventricles by 70 percent, Is due to the generation of the action potential in AVN... 3 Edit Delete
14523 The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of 6 606 Recommended Questions Atrioventricular bundle, Purkinje system... 3 Edit Delete
14522 Depolarisation and repolarisation actually initiate _________ in different chambers of heart? 6 606 Recommended Questions contraction and relaxation, relaxation and contraction... 1 Edit Delete
14521 Which of the following is known as the natural pacemaker of the heart? 6 606 Recommended Questions Sino atrial node, Atrioventricular node... 1 Edit Delete
14520 The action potential of ventricular side and to the entire ventricular musculature is conducted by– 6 606 Recommended Questions AVN, AV bundle and Bundle of His, SAN, AVN, AV bundle and Bundle of His... 1 Edit Delete
14519 Which one of the following is wrong with respect to nodal tissue. 6 606 Recommended Questions auto excitable, not localized to a single chamber.... 3 Edit Delete
14518 Normal activities of the human heart are regulated: 6 606 Recommended Questions Intrinsically, By the autonomic nervous system... 1 Edit Delete
14517 Which of the following sequences best represents the pathway of an action potential through the Heart's conduction system? (i) Sino-atrial (SA) node (ii) Purkinje fibres (iii) Bundle of His (iv) Atrio-ventricular (AV) node (v) Right and left bundle branches 6 606 Recommended Questions (i),(iv),(iii),(ii),(v), (iv),(i),(iii),(v),(ii)... 4 Edit Delete
14516 What does the depolarization of ventricles initiate? 6 606 Recommended Questions Atrial Diastole, Atrial systole... 3 Edit Delete
14515 SAN is responsible for 6 606 Recommended Questions initiating and maintaining a random contractile ability of heart, initiating and maintaining a rhythmic contractile ability of heart... 2 Edit Delete
14514 'Bundle of His' is a part of which one of the following organs in humans? 6 606 Recommended Questions Heart, Kidney... 1 Edit Delete
14513 The number of action potential generated by SAN: 6 606 Recommended Questions 70–75 times per minute., 50–72 times per minute.... 1 Edit Delete
14512 In the given section of the human heart which part ensures that atria contact prior to the ventricles? 6 606 Recommended Questions A, B... 1 Edit Delete
14511 Ventricular contraction is in command of: 6 606 Recommended Questions S.A. Node, A.V. Node... 1 Edit Delete
14510 During ventricular diastole, which of the following event take place earliest? 6 606 Recommended Questions Closure of semilunar valve, Opening of cuspid valve... 1 Edit Delete
14509 During a cardiac cycle: 1. About 70 ml of blood is pumped by the two ventricles 2. The left atrium and the left ventricle contract simultaneously 3. More blood is pumped into the systemic than in pulmonary circulation 4. The atria contract prior to the ventricles 6 606 Recommended Questions About 70 ml of blood is pumped by the two ventricles, The left atrium and the left ventricle contract simultaneously... 4 Edit Delete
14508 Arrange the following events in a proper sequence. (i) Increased ventricular pressure (ii) Attempted backflow of blood into the atria (iii) Ventricular systole (iv) Closure of AV valves 6 606 Recommended Questions (i) - (ii) - (iii) - (iv), (ii) - (i) - (iii) - (iv)... 3 Edit Delete
14507 Imagine, if the semilunar valves do not work, which of the following event won't happen surely? 6 606 Recommended Questions Atrial Contraction, Ventricular Contraction... 4 Edit Delete
14506 When the sinoatrial node generates an action potential which stimulates both the atria to undergo a simultaneous contraction, it is called atrial systole. This causes the flow of blood into the ventricles and is responsible for ________ filling of ventricles. 6 606 Recommended Questions 70 percent, 30 percent... 2 Edit Delete
14505 How much volume of blood each ventricle pumps out approximately during a cardiac cycle? 6 606 Recommended Questions 70 mL, 70 mL × 72... 1 Edit Delete
14504 The lub sound of heart is produced during which phase of cardiac cycle? 6 606 Recommended Questions ventricular systole, atrial diastole... 1 Edit Delete
14503 The value of beat volume is 6 606 Recommended Questions 5L, 70 mL... 2 Edit Delete
14502 Consider the following events during a cardiac cycle: I. Closure of the AV valves II. Opening of the semilunar valves These events occur during: 6 606 Recommended Questions Atrial diastole, Atrial systole... 4 Edit Delete
14501 The second heart sound during the cardiac cycle is produced by the: 6 606 Recommended Questions Simultaneous opening of the atrioventricular valves, Simultaneous closure of the atrioventricular valves... 4 Edit Delete
14500 The tricuspid and bicuspid valves are closed because of 6 606 Recommended Questions Atrial systole, Attempted backflow of blood into the atria... 2 Edit Delete
14499 If the strength of ventricular contraction increases then it will cause 6 606 Recommended Questions increase in Heart beat rate, increase in cardiac output... 4 Edit Delete
14498 When the heart beats, the familiar lub-dup sound occurs as the valves of the heart _____. 6 606 Recommended Questions open, close... 2 Edit Delete
14497 Which of the following statement is true? 6 606 Recommended Questions Cardiac output of an athlete is much lower than that of an ordinary man., In each minute a single cardiac cycle is performed.... 4 Edit Delete
14496 The pumping pressure of healthy heart is 6 606 Recommended Questions 120 mmHg, 80 mmHg... 1 Edit Delete
14495 Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when 6 606 Recommended Questions AV valves open up, Ventricular walls vibrate due to gushing in of blood from atria... 3 Edit Delete
14494 The pumping pressure is also known as _____ and the resting pressure is also known as _____ 6 606 Recommended Questions systolic pressure, diastolic pressure, diastolic pressure, systolic pressure... 1 Edit Delete
14493 The duration of cardiac cycle is– 6 606 Recommended Questions 0.8 second, 0.5 second... 1 Edit Delete
14492 Given below are four statements (a-d) regarding human blood circulatory system: (a) Arteries are thick-walled and have narrow lumen as compared to veins (b) Angina is acute chest pain when the blood circulation to the brain is reduced (c) Persons with blood group AB can donate blood to any person with any blood group under ABO system (d) Calcium ions play a very important role in blood clotting Which two of the above statements are correct? 6 606 Recommended Questions (a) and (b), (b) and (c)... 4 Edit Delete
14491 In open circulatory system, blood is pumped through 6 606 Recommended Questions Sinuses to large vessels, Large vessels to sinuses... 2 Edit Delete
14490 In single circulation, the heart pumps 6 606 Recommended Questions oxygenated blood, deoxygenated blood... 2 Edit Delete
14489 At which point, the pulmonary artery is different from the pulmonary vein: 6 606 Recommended Questions Its lumen is broad, Its wall is thick... 2 Edit Delete
14488 The pathway of single circulation is 6 606 Recommended Questions Heart – body – gills – Heart, Heart – gills – body – Heart... 2 Edit Delete
14487 Which system of blood vessels is present in our body exclusively for the circulation of blood to and from the cardiac musculature? 6 606 Recommended Questions Portal system, Shunting... 3 Edit Delete
14486 The hepatic portal vein drains blood to liver from 6 606 Recommended Questions heart, stomach... 4 Edit Delete
14485 What percentage of ventricular filling is achieved by atrial contraction? 6 606 Recommended Questions 30, 50... 1 Edit Delete
14484 The given figure shows schematic plan of blood circulation in humans with labels A to D. Identify the labels along with their functions and select the correct option. 6 606 Recommended Questions C - Vena Cava - takes blood from body parts to right atrium, PCO₂ = 45 mm Hg, D - Dorsal aorta - takes blood from heart to body parts, PO₂ = 95 mm Hg... 1 Edit Delete
14483 Find the odd statement 6 606 Recommended Questions SA node generates the maximum number of action potential per minute so it sets the pace of the activities of the heart, About 70ml of blood in pumped out by each ventricle during a cardiac cycle is stroke volume... 4 Edit Delete
14482 Hepatic portal system connect 6 606 Recommended Questions Liver and heart., Liver and Kidney.... 3 Edit Delete
14481 Which of the following order is correct? 6 606 Recommended Questions Veins – capillaries – arteries, Arteries – arterioles – capillaries – venules – veins... 2 Edit Delete
14480 Arteries have _______ layer of smooth muscles than _______ 6 606 Recommended Questions thicker, vein, thicker, aorta... 1 Edit Delete
14479 Which vessels bring blood to right atrium? 6 606 Recommended Questions Vena Cava and coronary sinus, Pulmonary veins... 1 Edit Delete
14478 The passage of blood from left atrium to body is 6 606 Recommended Questions left atrium – left ventricle – Aorta – Body, left atrium – right ventricle – Aorta – Body... 1 Edit Delete
14477 Incomplete double circulation occurs in 6 606 Recommended Questions Fishes, Amphibians... 4 Edit Delete
14476 The hepatic portal ______ carries blood from ______ to liver before it is delivered to the ______. 6 606 Recommended Questions vein, Pancreas, Pulmonary, artery, intestine, systemic... 3 Edit Delete
14475 The right atria of the human heart receive: 6 606 Recommended Questions Oxygenated blood, Deoxygenated blood... 2 Edit Delete
14474 The passage of blood from right atrium to body is 6 606 Recommended Questions right atrium–right ventricle–pulmonary vein–body, right atrium–right ventricle–pulmonary artery–lung... 2 Edit Delete
14473 Which of the following matches correctly? 6 606 Recommended Questions Inferior vena cava - Receives deoxygenated blood from the head and body, Superior vena cava - Receives deoxygenated blood from the lower body and organs... 3 Edit Delete
14472 All veins carry deoxygenated blood except 6 606 Recommended Questions pulmonary vein, hepatic vein... 1 Edit Delete
14471 Open circulatory system is present in 6 606 Recommended Questions Arthropods, Molluscs... 4 Edit Delete
14470 Match the vessels in Column-I with appropriate organs in Column-II: Column-I (A) Hepatic portal vein (B) Pulmonary trunk (C) Coronary circulation (D) Inferior vena cava Column-II (p) Heart's blood system (q) Returns blood to the heart from lower limbs (r) Carries blood to the liver (s) Leads to lungs 6 606 Recommended Questions (A)→(r), (B)→(s),(C)→(p),(D)→(q), (A)→(r),(B)→(q),(C)→(s),(D)→(p)... 1 Edit Delete
14469 What does systemic circulation provide to tissue? 6 606 Recommended Questions nutrient, oxygen... 4 Edit Delete
14468 Which one is incorrect in the following: 6 606 Recommended Questions Inter atrial septa – thin and muscular, Atrio– ventricular septa – thick and fibrous... 4 Edit Delete
14467 Consider the following statement with respect to heart: (i) It has the double walled membranous bag. (ii) Human heart has four chambers: two larger atria and two median ventricles. (iii) Human heart is mesodermal in origin and is situated in abdominal cavity. (iv) There is no clear separation between atria and ventricles. How many of the statements given above are correct? 6 606 Recommended Questions 2, 3... 3 Edit Delete
14466 Which of the following statements is not true for the human heart? 6 606 Recommended Questions Adrenal medullary hormones can increase the cardiac output, Neural signal through the sympathetic nerves can initiate the heart beat... 2 Edit Delete
14465 The sino-atrial node is the normal pacemaker of the human heart because: 6 606 Recommended Questions It is located in the right atrium., It is the only part of the conducting system that can generate impulse.... 3 Edit Delete
14464 The inter-atrial septum in the human heart can be best described as: 6 606 Recommended Questions A thin muscular wall, A thick muscular wall... 1 Edit Delete
14463 Semilunar valves are found between 6 606 Recommended Questions left ventricle and aorta, right ventricle and pulmonary artery... 4 Edit Delete
14462 SAN is present in ________ while AVN is present in ________. 6 606 Recommended Questions Right upper corner and left lower corner of both the atria., Right upper corner and left lower corner of right atrium.... 2 Edit Delete
14461 Match the following nodal tissues of heart with their correct location Column I (a) AV node (b) SA node (c) Bundle branch (d) Purkinje fibres Column II (i) Right upper corner of the right atrium (ii) Left upper corner of the right atrium (iii) Base of inter atrial septum tilted towards right (iv) Lower right corner of the right atrium (v) Interventricular septum (vi) Musculature of ventricles 6 606 Recommended Questions (iii) (ii) (vi) (v), (iii) (i) (v) (vi)... 2 Edit Delete
14460 The opening between the right atrium and the right ventricle is guarded by the valve named 6 606 Recommended Questions bicuspid valve, tricuspid valve... 2 Edit Delete
14459 A patch of nodal tissue responsible for initiating the rhythmic contractile activity of the heart is present in: 6 606 Recommended Questions Lower left corner of the left ventricle, Upper right corner of the right atrium... 2 Edit Delete
14458 Bicuspid valves are present between 6 606 Recommended Questions left atria and aorta, right atria and pulmonary artery... 3 Edit Delete
14457 Human Heart has SA node which makes it– 6 606 Recommended Questions myogenic heart, neurogenic heart... 1 Edit Delete
14456 Which of the following plasma protein helps in coagulation of blood? 6 606 Recommended Questions Fibrin, Prothrombin... 1 Edit Delete
14455 During the initiation of coagulation of blood, the platelets are activated by– 6 606 Recommended Questions Thrombin, Trauma... 2 Edit Delete
14454 Which of the following is correct regarding thrombin? 6 606 Recommended Questions It is a protein of primary structure, Converts soluble fibrinogen of plasma into insoluble fibrin... 2 Edit Delete
14453 Fibrins are formed by conversion of ______ in ______ by the enzyme ______ 6 606 Recommended Questions Fibrinogen, serum, Thrombokinase, prothrombin, plasma, thrombin... 3 Edit Delete
14452 Arrange the following component in the sequence of activation of blood clotting mechanism? 6 606 Recommended Questions (i), (ii), (iii), (iv), (v), (i), (iv), (v), (ii), (iii)... 2 Edit Delete
14451 Thrombokinase performs a specific function in human body. Choose the correct option 6 606 Recommended Questions Thrombin → Prothrombin, Fibrinogen → Fibrin... 4 Edit Delete
14450 If a person gets his blood count done from a lab and finds his platelets to be 20000 and then meets an accident on that day. Which of the following is correct? 6 606 Recommended Questions as the platelet count is normal, there will be no harm to him because of platelets., Clotting disorders... 4 Edit Delete
14449 Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body. 6 606 Recommended Questions Erythrocytes, Leucocytes... 4 Edit Delete
14448 Match the following: (i) Fibrinogen p. Defence (ii) Globulin q. Osmotic balance (iii) Albumin r. Clotting 6 606 Recommended Questions (i) → r, (ii) → p, (iii) → q, (i) → p, (ii) → r, (iii) → q... 1 Edit Delete
14447 Platelets are formed from– 6 606 Recommended Questions Megakaryoblast, Megakaryocyte... 2 Edit Delete
14446 Erythroblastosis foetalis occurs when a factor from mother passes into the foetus through the placenta. The factor is 6 606 Recommended Questions Rh antigen, Rh antibodies... 2 Edit Delete
14445 Erythroblastosis fetalis can be prevented during a second pregnancy in a Rh negative mother who is likely to carry a Rh positive fetus by: 6 606 Recommended Questions Administering anti – Rh antibodies to the mother just before the delivery of the second child, Administering Rh antigen to the mother just after the delivery of the first child... 4 Edit Delete
14444 A person can receive blood only from a donor of his/her blood group if the blood group of this person is: 6 606 Recommended Questions O, AB... 1 Edit Delete
14443 During 'Erythroblastosis fetalis' there is 6 606 Recommended Questions Foetal stem cells fails to form RBC., RBC fails to transport O₂ to foetal tissues.... 3 Edit Delete
14442 There is a possibility of exposure of the maternal blood [of Rh -ve mother] to small amounts of Rh +ve blood from the fetus during the: 6 606 Recommended Questions First trimester of any pregnancy, Third trimester of the second pregnancy only... 3 Edit Delete
14441 To avoid Erythroblastosis Foetalis– 6 606 Recommended Questions the mother is administered anti-Rh antibodies., the baby is administered Rh antibodies.... 1 Edit Delete
14440 Hemolytic disease of the newborn (HDN) may occur in the fetus of a second pregnancy if: 6 606 Recommended Questions The mother is Rh⁺ and the baby is Rh⁻, The mother is Rh⁺ and the baby is Rh⁺... 4 Edit Delete
14439 _____ population has Rh _____ on the surface of _____ present in their _____. 6 606 Recommended Questions 20%, antigen, platelets, plasma, 80%, antigen, RBC, blood... 2 Edit Delete
14438 A person with AB blood group: 6 606 Recommended Questions Has A and B antigens in his plasma, Lacks any antibodies on RBC surface... 3 Edit Delete
14437 ABO blood grouping is based on 6 606 Recommended Questions presence of two soluble antibodies, absence of two surface antigens... 4 Edit Delete
14436 Choose the incorrect match with respect to blood components 6 606 Recommended Questions Leucocytes – 6000 - 8000 mm⁻³, Globulins – Involved in defence mechanisms... 3 Edit Delete
14435 Person with blood group AB is considered as universal recipient because he has 6 606 Recommended Questions Both A and B antigens on RBC but no antibodies in the plasma, Both A and B antibodies in the plasma... 1 Edit Delete
14434 When the plasma of a person has both anti A and anti B antibodies the blood group of this person would be: 6 606 Recommended Questions A, B... 4 Edit Delete
14433 Different blood groups are due to: 6 606 Recommended Questions Specific antigens on the surface of WBCs, Specific antibodies on the surface of RBCs... 3 Edit Delete
14432 A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend? 6 606 Recommended Questions Type AB, Type O... 2 Edit Delete
14431 Which of the following cell will play a role in inflammatory reactions? 6 606 Recommended Questions Eosinophil, Basophil... 2 Edit Delete
14430 Identify the given figure and select the correct option 6 606 Recommended Questions Neutrophil - phagocytic cell which destroy foreign organisms entering the body, Eosinophil - their number increases during allergic infection... 1 Edit Delete
14429 Select the option having all the correct characteristics: 6 606 Recommended Questions 0.3-0.5, Phagocytic, 0.5-1.0, Secrete histamine... 2 Edit Delete
14428 Which of the following sequence is correct in terms of abundance? 6 606 Recommended Questions Neutrophils > Lymphocytes > Monocytes > Eosinophils > Basophils, Neutrophils > Lymphocytes < Monocytes > Eosinophils > Basophils... 1 Edit Delete
14427 Leucocytes are _____ and _____. 6 606 Recommended Questions colourless and enucleated, coloured and nucleated... 3 Edit Delete
14426 Which of the following cell/cells will play a role in immune responses? 6 606 Recommended Questions Ganulocytes, Neutrophils... 3 Edit Delete
14425 Which of the following cell/cells will play a role in phagocytosis? 6 606 Recommended Questions monocytes, Neutrophils... 4 Edit Delete
14424 Which blood cell can secrete and transport heparin, histamin and serotonin? 6 606 Recommended Questions Acidophil, Basophil... 2 Edit Delete
14423 Which of the following cell/cells are not Granulocytes? 6 606 Recommended Questions Eosinophil, Basophil... 3 Edit Delete
14422 144 6 605 Recommended Questions 1, 2... 1 Edit Delete
14421 The following statements refer to gas carriage by blood. Choose the correct statement: 6 605 Recommended Questions After leaving the lungs, each litre of blood contains about 20 ml of oxygen., Haemoglobin is half saturated with oxygen when the PO₂ is about 30 mm Hg.... 2 Edit Delete
14420 In the given diagram of the oxygen dissociation curve, under normal physiological conditions, the partial pressure of oxygen at the tissue level is represented by: 6 605 Recommended Questions A, B... 2 Edit Delete
14419 Which of the following does not shift the oxy-haemoglobin dissociation curve to the right? 6 605 Recommended Questions increased pH, increased carbon dioxide... 1 Edit Delete
14418 In the human body, CO₂ is primarily carried in blood as 6 605 Recommended Questions Dissolved in plasma, Carbaminohaemoglobin... 3 Edit Delete
14417 A curve obtained when percentage saturation of Hb with O₂ is plotted against the pO₂ is also called as 6 605 Recommended Questions Association curve, Dissociation Curve... 4 Edit Delete
14416 The partial pressure of oxygen is equal in 6 605 Recommended Questions Atmospheric air and Alveoli, Alveoli and Oxygenated blood... 4 Edit Delete
14415 Choose the incorrect statement 6 605 Recommended Questions Every 100 ml of deoxygenated blood delivers approximately 4 ml of CO₂ to the alveoli, Carbonic anhydrase is present in very high concentration in RBC... 4 Edit Delete
14414 In case of a decrease in the carbon dioxide concentration of blood, the Hb-O₂ saturation curve will shift towards: 6 605 Recommended Questions Right side, Left side... 2 Edit Delete
14413 Factors which can cause right shift in oxyhaemoglobin curve include all except 6 605 Recommended Questions Increase in pCO₂, Decrease in pO₂... 3 Edit Delete
14412 An increase from pH 7.2 to pH 7.4 around hemoglobin causes: 6 605 Recommended Questions Hemoglobin to release all bound oxygen molecules., An increase in the affinity of hemoglobin to bind oxygen molecules.... 2 Edit Delete
14411 What amount of carbon dioxide is delivered by every 100 ml of deoxygenated blood to the alveoli? 6 605 Recommended Questions 4 ml, 5 ml... 1 Edit Delete
14410 Oxygen binding to haemoglobin in blood is 6 605 Recommended Questions directly proportional to the concentration of CO₂ in the medium, inversely proportional to the concentration of CO₂ in the medium... 2 Edit Delete
14409 What is true about RBCs in humans? 6 605 Recommended Questions They carry about 20-25 per cent of CO₂, They transport 99.5 per cent of O₂... 1 Edit Delete
14408 Every 2000 mL of deoxygenated blood delivers approximately, how much mL CO₂ to alveoli? 6 605 Recommended Questions 4 mL, 4.2 mL... 4 Edit Delete
14407 Frogs respire through 6 605 Recommended Questions Skin, Lungs... 4 Edit Delete
14406 Oxygen binding to hemoglobin in blood is: 6 605 Recommended Questions directly proportional to the concentration of CO₂ in the medium., inversely proportional to the concentration of CO₂ in the medium.... 2 Edit Delete
14405 How many of the following factors are favourable for the shifting of Oxyhaemoglobin dissociation Curve to the left side: low pO₂, high pCO₂, more H⁺ Concentration, Higher temperature, High pO₂, Low pCO₂, less H⁺ Concentration, lower temperature. 6 605 Recommended Questions 3, 4... 2 Edit Delete
14404 Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs 6 605 Recommended Questions as bicarbonate ions, in the form of dissolved gas molecules... 1 Edit Delete
14403 Mark the incorrect statement regarding the transport of gas. 6 605 Recommended Questions About 97% of O₂ is transported by RBC., Nearly 20-25% of CO₂ is transported by RBC.... 4 Edit Delete
14402 Binding of Oxygen with Hb is primarily related to 6 605 Recommended Questions Partial pressure of O₂, Partial pressure of CO₂... 1 Edit Delete
14401 The solubility of carbon dioxide is about ____ times higher than that of oxygen across the respiratory membrane. 6 605 Recommended Questions 20-25, 25-50... 1 Edit Delete
14400 The formation of Carbonic acid from Carbon dioxide and water has catalyzed the enzyme 6 605 Recommended Questions Carbonic anhydrase, Carbonic anhydride... 1 Edit Delete
14399 Carbonic anhydrase plays an important role in the transport of carbon dioxide in 6 605 Recommended Questions Leucocytes, Thrombocytes... 3 Edit Delete
14398 The binding of Hb with Carbon dioxide forms 6 605 Recommended Questions Methamoglobin, Carbamino-haemoglobin... 2 Edit Delete
14397 The red coloured, Fe containing pigment present in the erythrocytes is 6 605 Recommended Questions Haemoglobin, Myoglobin... 1 Edit Delete
14396 Which of the following is true 6 605 Recommended Questions Gills are used by most of the aquatic animals, Lungs are used by most of the terrestrial animals... 4 Edit Delete
14395 Each Hb can carry a maximum of ___ oxygen molecules. 6 605 Recommended Questions 2, 4... 2 Edit Delete
14394 Which of the following match is correct? 6 605 Recommended Questions Emphysema: reduction of surface area of alveoli and bronchi, Pneumonia: occupational disease with asbestos... 1 Edit Delete
14393 Read the following four statements (a-d) and select the option which includes all correct ones only: (a) Exchange of O₂ and CO₂ at alveoli and tissue occur by active transport. (b) Long exposure to industrial dust leads to inflammation leading to fibrosis and thus causing serious lung damage. (c) EICM and IICM are muscles actively involved in normal and forced breathing respectively. (d) Spirometer is unable to find out the functional residual capacity and total lung capacity. 6 605 Recommended Questions b, c and d, b and d... 1 Edit Delete
14392 Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively? 6 605 Recommended Questions Inflammation of bronchioles; decreased respiratory surface, Increased number of bronchioles; increased respiratory surface... 1 Edit Delete
14391 In which of the following disorders there is difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles? 6 605 Recommended Questions Emphysema, Asthma... 2 Edit Delete
14390 In which of the following disorders alveolar walls are damaged, surface area for gaseous exchange is reduced and the air sacs remain filled with air even after expiration? 6 605 Recommended Questions Pneumonia, Coryza... 3 Edit Delete
14389 Name the chronic respiratory disorder caused mainly by cigarette smoking 6 605 Recommended Questions asthma, respiratory acidosis... 4 Edit Delete
14388 Emphysema is a chronic disorder, it leads to 6 605 Recommended Questions Loss of elasticity of walls of bronchioles and alveoli, Surface area of exchange of gases is increased... 1 Edit Delete
14387 Which of the following is not a symptom of asthma? 6 605 Recommended Questions Difficulty in breathing, Breathing noisily/wheezing... 3 Edit Delete
14386 Excessive cigarette smoking leading to damage of alveolar walls is associated with 6 605 Recommended Questions Asthma, Emphysema... 2 Edit Delete
14385 What is the primary function of the Pneumotaxic Center in the regulation of respiration in human beings? 6 605 Recommended Questions It increases the rate and depth of breathing, It decreases the rate of and depth of breathing... 3 Edit Delete
14384 A center that moderates the functions of the respiratory rhythm center is located in: 6 605 Recommended Questions Dorsal medulla oblongata, Ventral medulla oblongata... 3 Edit Delete
14383 How many of the following statements are correct? a. Normal exhalation during quiet breathing in an active process involving intensive muscle contraction. b. Air flow during breathing is due to pressure gradient between the lungs and atmospheric air. c. A specialised centre present in the medulla region of the brain called respiratory rhythm centre is primarily responsible for regulation of respiration. d. Respiratory rate decreases during fever. 6 605 Recommended Questions One, Two... 2 Edit Delete
14382 Respiration is under neural and chemical regulation. The receptors for chemical regulation are located in the: 6 605 Recommended Questions walls of the carotid and aortic arteries and in the medulla oblongata., walls of the carotid and aortic arteries only.... 1 Edit Delete
14381 Respiratory rhythm centre is present in the medulla and is primarily responsible for regulation of respiration as per demands of the body tissues. This centre is regulated by 6 605 Recommended Questions Pneumotaxic centre present pons region, Central chemoreceptor adjacent to rhythm centre... 4 Edit Delete
14380 'Chemosensitive Area' for regulation of respiration is present on? 6 605 Recommended Questions Medulla, Pons... 1 Edit Delete
14379 Pneumotaxic Centre is present in the 6 605 Recommended Questions forebrain, midbrain... 3 Edit Delete
14378 Aortic arch and carotid artery receptors cannot recognise changes in 6 605 Recommended Questions CO₂ Concentration, O₂ Concentration... 2 Edit Delete
14377 Human beings have a significant ability to maintain and moderate the respiratory rhythm. This is done by neural control. Which of the following is not related with respiration? 6 605 Recommended Questions Pneumotaxic centre, Respiratory rhythm centre... 3 Edit Delete
14376 Chemosensitive area of respiratory centre medulla is affected by 6 605 Recommended Questions less CO₂ and H⁺ ions, less O₂ and H⁺ ions... 3 Edit Delete
14375 Which substances when present in high level can activate the chemosensitive area present adjacent to rhythm centre? 6 605 Recommended Questions CO₂ and O₂, HCO₃⁻ ions and O₂... 3 Edit Delete
14374 Central chemoreceptors in the brain respond to changes in the 6 605 Recommended Questions Oxygen concentration in blood, Carbon dioxide concentration in CSF... 2 Edit Delete
14373 Pneumotaxic centre is located in: 6 605 Recommended Questions Pons, Cerebrum... 1 Edit Delete
14372 Match the following columns and select the correct option: Column I (a) Pneumotaxic Centre (b) O₂ Dissociation curve (c) Carbonic Anhydrase (d) Primary site of exchange of gases Column II (i) Alveoli (ii) Pons region of the brain (iii) Haemoglobin (iv) R.B.C. 6 605 Recommended Questions (i) (iii) (ii) (iv), (ii) (iii) (iv) (i)... 2 Edit Delete
14371 Consider the characters of a respiratory control center in humans: I. It is located in pons II. It moderates the functions of respiratory rhythm center III. Its absence results in an increase in depth of respiration The respiratory control center is: 6 605 Recommended Questions Pneumotaxic center, Apneustic center... 1 Edit Delete
14370 Respiration is controlled by 6 605 Recommended Questions medulla oblongata, cerebellum... 1 Edit Delete
14369 Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at: 6 605 Recommended Questions Pons region of brain, Thalamus... 1 Edit Delete
14368 Which of the following statements are correct with respect to transportation of gases? 6 605 Recommended Questions A. Blood transport CO₂ comparatively easily because of its higher solubility, B. CO₂ diffuses into blood, passes into RBCs and reacts with water to form H₂CO₃... 3 Edit Delete
14367 Carbon dioxide generated in the tissue is carried in venous blood primarily as 6 605 Recommended Questions Dissolved gas in plasma, Carbamino hemoglobin... 3 Edit Delete
14366 Which of the following statements is correct regarding CO₂ and O₂ transport in blood? 6 605 Recommended Questions 100 ml of oxygenated blood carries 53 ml of O₂, 100 ml of blood always transport equal amounts of O₂ and CO₂... 3 Edit Delete
14365 Which of the following statement is incorrect with respect to transport of carbon dioxide in blood? 6 605 Recommended Questions About 20-25 percent of carbon dioxide is carried by haemoglobin in the form of carbamino haemoglobin, 70 percent of CO₂ is carried in a dissolved states through plasma... 2 Edit Delete
14364 Carbonic anhydrase is present in 6 605 Recommended Questions R.B.C, Plasma... 3 Edit Delete
14363 At 40 mmHg of partial pressure of oxygen haemoglobin is _____ saturated 6 605 Recommended Questions 50 %, 75 %... 2 Edit Delete
14362 What percentage of haemoglobin is saturated with oxygen in the blood at pO₂ 30 mm Hg and pCO₂ 40 mm Hg? 6 605 Recommended Questions 50 %, 85 %... 1 Edit Delete
14361 Dissociation of oxygen from blood to tissue is facilitated by 6 605 Recommended Questions Low pO₂ at the level of tissue, Metabolic activities of the tissue... 4 Edit Delete
14360 The number of oxygen molecules (O₂) that can conjugate with one molecule of haemoglobin are 6 605 Recommended Questions 2, 4... 2 Edit Delete
14359 Oxygen haemoglobin dissociation curves are represented as A and B. Select the incorrect interpretation 6 605 Recommended Questions Curve B has increased ability to unload O₂ in tissues, with respect to curve A., The shift in a curve from B to A is associated with decreased P50 value.... 3 Edit Delete
14358 Why the partial pressure of CO₂ is high at tissue-site? 6 605 Recommended Questions Due to the saturation of O₂ with Hb, Release of H⁺ at the tissue site... 3 Edit Delete
14357 The partial pressure of carbon dioxide in the pulmonary artery is 6 605 Recommended Questions More than that in tissues, Equal to that in systemic arteries... 4 Edit Delete
14356 In the process of respiration how many times the process of diffusion takes place in respiration 6 605 Recommended Questions 4, 3... 3 Edit Delete
14355 At lungs carbon dioxide diffuses out of the pulmonary capillaries into the alveoli. As a result hemoglobin’s ability to bind to oxygen would: 6 605 Recommended Questions be unstable, stay the same... 4 Edit Delete
14354 The partial pressure of CO₂ is minimum in the 6 605 Recommended Questions atmospheric air, Alveoli... 1 Edit Delete
14353 The most important primary factor in determining the percent saturation of haemoglobin with oxygen is 6 605 Recommended Questions Partial pressure of oxygen, Acidity... 1 Edit Delete
14352 The pO₂ in systemic arteries and systemic veins is respectively 6 605 Recommended Questions 95, 40 mmHg, 95, 45 mmHg... 1 Edit Delete
14351 Given below a diagram of a section of an alveolus with a pulmonary capillary. Which of the following is a correct statement for diffusion of gases? 6 605 Recommended Questions Diffusion of O₂ and CO₂ from A to B or B to A takes place with the same rate., O₂ will diffuse faster from A to B than CO₂ from B to A... 2 Edit Delete
14350 At tissue sites, partial pressure of CO₂ is high due to ______ process. 6 605 Recommended Questions Anabolic, catabolic... 2 Edit Delete
14349 Partial pressure of CO₂ in alveoli of lungs: 6 605 Recommended Questions Is equal to that in the deoxygenated blood., Is more than that in the deoxygenated blood.... 3 Edit Delete
14348 Which of the following statements is not correct? 6 605 Recommended Questions Volume of air that will remain in the lungs after a normal expiration is about 2200 ml, Partial pressure of O₂ and CO₂ in alveoli is 40 mm Hg and 104 mm Hg respectively... 2 Edit Delete
14347 The partial pressure of O₂ and CO₂ in the arterial blood respectively is 6 605 Recommended Questions 40 mmHg and 45 mmHg, 100 mmHg and 45 mmHg... 3 Edit Delete
14346 The partial pressure of oxygen in the alveoli of the lungs is 6 605 Recommended Questions equal to that in the blood, more than that in the blood... 2 Edit Delete
14345 The figure given below shows a small part of the human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function? 6 605 Recommended Questions A - Alveolar cavity - main site of exchange of respiratory gases, D - Capillary wall - exchange of O₂ and CO₂ takes place here... 1 Edit Delete
14344 The amount of CO₂ that can diffuse through the diffusion membrane per unit difference in partial pressure is much higher as compared to that of O₂. This is because: 6 605 Recommended Questions Solubility coefficient of CO₂ is higher, Solubility coefficient of CO₂ is lesser... 1 Edit Delete
14343 Transport of gases in alveoli takes place by: 6 605 Recommended Questions Active transport, Passive transport... 3 Edit Delete
14342 pCO₂ is high and pO₂ is low can be found in 6 605 Recommended Questions alveoli, tissues... 2 Edit Delete
14341 More binding of CO₂ occurs when pCO₂ is ____ and pO₂ is ____ 6 605 Recommended Questions high, high, low, high... 3 Edit Delete
14340 In alveoli, 6 605 Recommended Questions pCO₂ is high and pO₂ is low, pCO₂ is low and pO₂ is high... 2 Edit Delete
14339 Given below are the partial pressures (in mmHg) of oxygen and carbon dioxide at different parts involved in diffusion in comparison to those in atmosphere. Respiratory gas O₂ CO₂ Atmospheric air 159 A Alveoli B 40 Body (deoxygenated) 40 C Blood (Oxygenated) D 40 Tissues 40 45 Choose the correct option with respect to the values of partial pressures (in mmHg) marked as A, B, C and D. 6 605 Recommended Questions A: 0.3, B: 104, C: 40, D: 52, A: 32, B: 116, C: 45, D: 45... 3 Edit Delete
14338 The diffusion membrane or respiratory membrane does not include 6 605 Recommended Questions Thin squamous epithelium, Pseudostratified ciliated epithelium... 2 Edit Delete
14337 Diffusion membrane consists of 6 605 Recommended Questions Squamous epithelium of alveoli, endothelium of alveolar capillaries... 4 Edit Delete
14336 Which of the following events happen when air expelled from lungs 6 605 Recommended Questions Ribs and sternum returned to original position, volume of thorax decreased... 4 Edit Delete
14335 Which of the following events happen when air enters lungs 1. Ribs and sternum raised 2. volume of thorax increased 3. Diaphragm contracted 4. All of the above 6 605 Recommended Questions Ribs and sternum raised, volume of thorax increased... 4 Edit Delete
14334 Vital capacity (VC) can be stated as 6 605 Recommended Questions TV + IRV, TV + FRC... 4 Edit Delete
14333 Given below are four statements A-D each with one or two blanks. Select the option which correctly fills up the blanks in two statements. A. Healthy man can inspire or expire approximately ___ ml of air per minute. B. Inspiratory reserve volume average ___ ml. C. Residual volume averages ___ ml. D. Volume of air accumulated in the lungs at the end of forced inspiration is ___. 6 605 Recommended Questions A - 500 ml, B - 2500 to 3000 ml, B - 2500 to 3000 ml, C - 1000 ml to 1100 ml... 4 Edit Delete
14332 A healthy man can inspire or expire approximately ____ of air per breath normally 6 605 Recommended Questions 500 ml, 1000 ml to 1100 ml... 1 Edit Delete
14331 The maximum amount of air that a person can breathe out after a forced inspiration, under normal physiological conditions, would be about: 6 605 Recommended Questions 1600 ml, 2300 ml... 3 Edit Delete
14330 Select the incorrectly matched pair 6 605 Recommended Questions Additional volume of air person can expire by a forceful expiration - Expiratory reserve volume, Maximum amount of air expelled forcefully from lungs after maximum forceful inspiration - Vital capacity... 4 Edit Delete
14329 Maximum volume of air a person can breathe after forceful expiration is termed as 6 605 Recommended Questions Inspiratory capacity, Vital capacity... 2 Edit Delete
14328 Total volume of air accommodated in the lungs at the end of maximum forceful inspiration includes 6 605 Recommended Questions ERV + RV, IRV + ERV... 4 Edit Delete
14327 The volume of air expired forcefully after forceful inspiration 6 605 Recommended Questions TV+IRV, TV+ERV+IRV... 2 Edit Delete
14326 What is vital capacity of our lungs? 6 605 Recommended Questions Inspiratory reserve volume plus tidal volume, Total lung capacity minus expiratory reserve volume... 4 Edit Delete
14325 The maximum volume of air a person can breathe in after a forced expiration is 6 605 Recommended Questions (A) only, (A) & (B) only... 3 Edit Delete
14324 The maximum volume of air a person can breathe in after a forced expiration includes 6 605 Recommended Questions ERV (Expiratory Reserve volume), TV (Tidal Volume)... 4 Edit Delete
14323 Total volume of air a person can expire after a normal inspiration is 6 605 Recommended Questions A only, B & C only... 2 Edit Delete
14322 Volume of air that will remain in the lungs after a normal expiration is 6 605 Recommended Questions Inspiratory capacity, Functional residual capacity... 2 Edit Delete
14321 The volume of air expired forcefully after normal inspiration 6 605 Recommended Questions TV+IRV, TV+ERV... 2 Edit Delete
14320 Match the items given in Column I with those in Column II and select the correct option given below: 6 605 Recommended Questions a-iii b-ii c-i d-iv, a-iii b-i c-ii d-iv... 2 Edit Delete
14319 The Total Lung Capacity (TLC) is the total volume of air accommodated in the lungs at the end of forced inspiration. This includes: 6 605 Recommended Questions RV; IC (Inspiratory Capacity); EC (Expiratory Capacity); and ERV, RV; ERV; IC and EC... 4 Edit Delete
14318 Vital capacity is 6 605 Recommended Questions RV + TV + IRV, ERV + RV... 4 Edit Delete
14317 The amount of air that enters the lungs during normal, restful breathing is called the______. 6 605 Recommended Questions Vital capacity, Tidal volume... 2 Edit Delete
14316 Mark the incorrect combination with respect to pulmonary capacities 6 605 Recommended Questions IC = TV + IRV, FRC = RV + ERV... 3 Edit Delete
14315 Match the items given in Column I with those in Column II and select the correct option given below. Column-I a. Inspiratory capacity b. Vital capacity c. Residual volume d. Functional residual capacity Column-II i. IRV + EC ii. TV + IRV iii. TLC – VC iv. TLC – IC 6 605 Recommended Questions a(i), b(ii), c(iv), d(iii), a(iii), b(i), c(ii), d(iv)... 4 Edit Delete
14314 Match the lung volumes given in column I with their respective values in column II. Column-I a. Tidal volume b. Residual volume c. Inspiratory reserve volume d. Expiratory reserve volume Column-II i. 1000 mL ii. 2500-3500 mL iii. 1200 mL iv. 500 mL 6 605 Recommended Questions a(i), b(ii), c(iii), d(iv), a(i), b(iv), c(ii), d(iii)... 4 Edit Delete
14313 Breathing is best described as 6 605 Recommended Questions Utilisation of O₂ by the cells for catabolic reaction., Transport of gases by the blood.... 3 Edit Delete
14312 Choose the correct sequence during expiration (i) Pressure increases in pulmonary cavity (ii) Volume of thoracic cavity decreases (iii) Expulsion of air from high pressure to low pressure (iv) Decrease in volume of pulmonary cavity 6 605 Recommended Questions i → ii → iii → iv, iv → i → iii → ii... 3 Edit Delete
14311 Read the following steps and arrange them in correct sequence for the process of inspiration: A. Increases thoracic volume B. Air moves into lungs C. The contraction in diaphragm and EICM D. Increases pulmonary volume E. Lungs expand F. Decreases the pulmonary pressure (IPP) 6 605 Recommended Questions A, B, C, D, E, F, C, D, A, E, F, B... 3 Edit Delete
14310 The diaphragm and external intercostal muscles are _______ when expiration occurs. 6 605 Recommended Questions contracted, relaxed... 2 Edit Delete
14309 On an average, a healthy human breathes _____ times/minute. 6 605 Recommended Questions 70-72, 20-25... 3 Edit Delete
14308 What happens to the volume of the pulmonary cavity when there is an increase in the volume of the thoracic chamber? 6 605 Recommended Questions It decreases, It increases... 2 Edit Delete
14307 By the contraction in radial muscle of diaphragm it become flattened in shape, so, volume of thoracic cavity increases in:- 6 605 Recommended Questions Anterior-posterior axis, Dorsal-ventral axis... 1 Edit Delete
14306 Select the correct statement: 6 605 Recommended Questions Expiration occurs due to external intercostal muscles., Intrapulmonary pressure is lower than atmospheric pressure during inspiration.... 2 Edit Delete
14305 In the given figure, identify the muscles involved in raising the rib cage 6 605 Recommended Questions External intercostals, Internal intercostals... 1 Edit Delete
14304 Contraction of diaphragm: 6 605 Recommended Questions Increases the volume of the thoracic chamber in the antero-posterior axis, Increases the volume of the thoracic chamber in the dorso-ventral axis... 1 Edit Delete
14303 The movement of air into the lungs occurs due to a pressure gradient between the lungs and the atmosphere. So, inspiration occurs when/due to 6 605 Recommended Questions Intra pulmonary is less than the atmospheric pressure, Increase in the volume of the thoracic chamber in the dorso-ventral axis... 4 Edit Delete
14302 During inspiration, the diaphragm 6 605 Recommended Questions Contracts, Expands... 1 Edit Delete
14301 During inspiration there is _______ pressure in the lungs with respect to atmospheric pressure. 6 605 Recommended Questions positive, negative... 2 Edit Delete
14300 Pressure gradient between the lungs and atmosphere is maintained by 6 605 Recommended Questions diaphragm, external intercostal muscles... 4 Edit Delete
14299 The mechanism of breathing depends on animal's 6 605 Recommended Questions habitat, level of organisation... 3 Edit Delete
14298 Inspiration occurs when intra-pulmonary pressure is 6 605 Recommended Questions Higher than atmospheric pressure, Lower than atmospheric pressure... 2 Edit Delete
14297 Inspiration can occur if A pressure is less than atmospheric pressure, i.e., there is B pressure in the lungs with respect to atmosphere pressure. Choose the option that fills the blanks correctly. 6 605 Recommended Questions Intra-pulmonary Positive, Intra-pulmonary Negative... 2 Edit Delete
14296 Which of the following is the part of the thoracic chamber? 6 605 Recommended Questions ribs and vertebral column, diaphragm... 4 Edit Delete
14295 Which of the following comprise the lungs 6 605 Recommended Questions tracheae along with network of bronchi, bronchioles and alveoli, network of bronchi, bronchioles and alveoli... 2 Edit Delete
14294 Choose the wrong statement 6 605 Recommended Questions CO₂ is the harmful molecule and released during catabolic reactions, respiration will always require O₂... 2 Edit Delete
14293 Nasopharynx opens through ________ of the larynx region into the trachea. 6 605 Recommended Questions glottis, gullet... 1 Edit Delete
14292 Which of the following constitute the conduction part of the respiratory system 6 605 Recommended Questions external nostrils to trachea, external nostrils to primary bronchioles... 4 Edit Delete
14291 The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option, which gives correct identification and main function and/or characteristic. 6 605 Recommended Questions A-trachea-long tube supported by complete cartilaginous rings for conducting inspired air, B-pleural membrane-surround ribs on both sides to provide cushion against rubbing... 3 Edit Delete
14290 The common passage for food and air is 6 605 Recommended Questions nasal passage, nasopharynx... 4 Edit Delete
14289 Which of the following constitute the exchanging part of the respiratory system? 6 605 Recommended Questions external nostrils to trachea, external nostrils to primary bronchioles... 3 Edit Delete
14288 Which of the following is true about pleural membranes except 6 605 Recommended Questions outer pleural membrane is in close contact with the thoracic lining, inner pleural membrane is in contact with the lung surface... 4 Edit Delete
14287 Which of the following is not supported by cartilaginous rings 6 605 Recommended Questions Primary bronchioles, tertiary bronchioles... 4 Edit Delete
14286 Trachea divides into two right and left primary bronchi at the level of: 6 605 Recommended Questions Seventh cervical vertebra, Third thoracic vertebra... 3 Edit Delete
14285 Which of the following is true about epiglottis 6 605 Recommended Questions thin elastic cartilaginous flap, prevent food entry into larynx... 4 Edit Delete
14284 How many external nostrils are present in human beings 6 605 Recommended Questions 1, 2... 2 Edit Delete
14283 Lungs are covered by a double layered membrane which is called 6 605 Recommended Questions Pleural membrane, Visceral membrane... 1 Edit Delete
14282 Trachea divides at the level of _____ thoracic vertebra into left and right primary bronchi 6 605 Recommended Questions 5th, 6th... 1 Edit Delete
14281 Which of the following is the function of the conducting part of the respiratory system? 6 605 Recommended Questions clears the foreign particle, humidifies air... 4 Edit Delete
14280 Which of the following is entirely made of cartilage? 6 605 Recommended Questions Nasal septum, Larynx... 2 Edit Delete
14279 The volume of air involved in breathing movements can be estimated by using 6 605 Recommended Questions ECG, Sphygmomanometer... 3 Edit Delete
14278 146 6 604 Recommended Questions 1, 2... 1 Edit Delete
14277 Carrier proteins facilitate the absorption of substance like 6 604 Recommended Questions amino acids and glucose, glucose and fatty acids... 1 Edit Delete
14276 Mark the incorrect statement 6 604 Recommended Questions Fructose, mannose and some amino acids are absorbed by facilitated diffusion, Various nutrients like amino acids, fatty acid, monosaccharides like glucose, electrolytes like Na⁺ are absorbed by active transport only... 2 Edit Delete
14275 Which of the following statements is NOT correct? 6 604 Recommended Questions Microvilli increase the surface area of the small intestine for the absorption of nutrients., Enzymes located on the brush border finish the digestion of chyme.... 4 Edit Delete
14274 Which statement is correct with reference to chylomicron? 6 604 Recommended Questions They are end products of fat digestion, The reconstructed triglycerides in the intestinal cells combine with phospholipids and cholesterol and are released into lymph in the form of protein-coated fat droplets called chylomicrons... 2 Edit Delete
14273 Most of the water is absorbed in 6 604 Recommended Questions Small intestine, Large intestine... 2 Edit Delete
14272 Which one of the following statement is false regarding digestion and absorption of food in humans? 6 604 Recommended Questions Oxyntic cells in our stomach secrete the proenzyme pepsinogen., Glucose and amino acids are absorbed with the help of carrier ions like Na⁺.... 1 Edit Delete
14271 Stomach is the site of absorption of 6 604 Recommended Questions Simple sugars, Water... 4 Edit Delete
14270 The irregular movement of bowel characterizes which digestive disorder? 6 604 Recommended Questions Constipation, Diarrhoea... 1 Edit Delete
14269 Which of the following is not observed in Diarrhoea? 6 604 Recommended Questions Abnormal frequency of bowel movement, Increased liquidity of fecal discharge... 4 Edit Delete
14268 Mark the condition where food is not properly digested leading to feeling of fullness. This can be caused due to inadequate secretion, food poisoning, over eating etc. 6 604 Recommended Questions Vomiting, Constipation... 3 Edit Delete
14267 Match column I with column II: Column I (a) Vomiting (b) Diarrhoea (c) Constipation (d) Indigestion Column II (i) Inadequate enzyme secretion (ii) Irregular bowel movement (iii) Increased liquidity of faecal discharge (iv) A feeling of nausea 6 604 Recommended Questions (i) (iii) (ii) (iv), (iv) (ii) (iii) (i)... 3 Edit Delete
14266 Vomiting is an emetic reflex which is regulated by 6 604 Recommended Questions Hypothalamus, Superior colliculi of midbrain... 3 Edit Delete
14265 What cannot be the cause of indigestion? 6 604 Recommended Questions Inadequate enzyme secretion, Anxiety and food poisoning... 4 Edit Delete
14264 When skin and eyes turn yellow, it is the symptom of 6 604 Recommended Questions Vomiting, Diarrhoea... 3 Edit Delete
14263 Match the following disorders with their characters Column I (a) Constipation (b) Indigestion (c) Vomiting (d) Diarrhoea Column II (i) Abnormal frequency of bowel movement and increased liquidity of the faecal discharge (ii) A reflex action (feeling of nausea) (iii) Faeces are retained within the rectum as the bowel movements occur irregularly (iv) Feeling of fullness due to anxiety, food poisoning and overeating 6 604 Recommended Questions a (iv), b (ii), c (iii), d (i), a (iii), b (iv), c (ii), d (i)... 2 Edit Delete
14262 Match the following columns and choose the correct answer from the options given below a. Indigestion (i) Ejection of stomach contents through the mouth b. Constipation (ii) It reduces the absorption of food c. Diarrhoea (iii) The faeces are retained in the rectum as the bowel movements becomes irregular d. Vomiting (iv) Food is not properly digested 6 604 Recommended Questions a-iv, b-i, c-ii, d-iii, a-iv, b-iii, c-i, d-ii... 4 Edit Delete
14261 Which of the following is not a characteristic feature regarding protein energy malnutrition, marasmus? 6 604 Recommended Questions It is produced by a simultaneous deficiency of proteins and calories, It is found in infant less than a year of age... 4 Edit Delete
14260 Which group of three of the following statements A to E contains all correct statements with respect to Kwashiorkor? A. Caused mainly by deficiency of proteins. B. Fat is not left under the skin. C. Extensive oedema and swelling of the body parts. D. Is found in a child more than one year of age. E. Extreme emaciation and thinning of limbs occur. 6 604 Recommended Questions A, C and E, A, C and D... 2 Edit Delete
14259 Emaciation of the body, thinning of limbs, skin becomes dry, thin and wrinkled. The above symptoms are associated with- 6 604 Recommended Questions Marasmus, Kwashiorkar... 1 Edit Delete
14258 Kwashiorkor disease is due to: 6 604 Recommended Questions simultaneous deficiency of proteins and fats, simultaneous deficiency of proteins and calories... 4 Edit Delete
14257 When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from 6 604 Recommended Questions marasmus, rickets... 1 Edit Delete
14256 Marasmus is not characterized by- 6 604 Recommended Questions Protein deficiency, Impaired growth... 4 Edit Delete
14255 All the following conditions are observed in Marasmus, except 6 604 Recommended Questions It is found in infants less than a year in age, if the mother's milk is replaced too early by other foods which are poor in both proteins and caloric value, The layer of fat beneath the skin disappears... 3 Edit Delete
14254 The common feature of Marasmus and Kawashiorkor are 6 604 Recommended Questions Wasting of muscles, Failure of growth and brain development... 4 Edit Delete
14253 The replacement of mother's milk by high calorie and low protein diet in a child results in 6 604 Recommended Questions Marasmus, Kawashiorkar... 2 Edit Delete
14252 Fats under the skin, Extensive oedema and swelling of body parts. These are related to 6 604 Recommended Questions Marasmus, Kwashiorkor... 2 Edit Delete
14251 Protein deficiency occurs in a child more than one year results in 6 604 Recommended Questions Marasmus, Kawashiorkar... 2 Edit Delete
14250 What prevents the backflow of fecal matter into the small intestine? 6 604 Recommended Questions Ileo-caecal valve, Sphincter of Boyden... 1 Edit Delete
14249 Which of the following is not the function of the large intestine? 6 604 Recommended Questions Absorption of some water, minerals and certain drugs, Nutrient absorption... 2 Edit Delete
14248 Mucosa forms many small finger like villi in the: 6 604 Recommended Questions Stomach, Colon... 4 Edit Delete
14247 Principal organ for the absorption of nutrients is 6 604 Recommended Questions Buccal cavity, Stomach... 3 Edit Delete
14246 Lacteals, lymph capillaries are found in: 6 604 Recommended Questions Spleen, Intestinal villi... 2 Edit Delete
14245 What are the tiny finger-like projections called that are inside the small intestine? These tiny finger-like projections absorb the nutrients from the food and send the vitamins, minerals, proteins, carbohydrates and fats into our bloodstream: 6 604 Recommended Questions Esophagus, Arteries... 3 Edit Delete
14244 How many of the following statements are wrong? a. The bile duct and the pancreatic duct open together into the duodenum as the common hepato-pancreatic duct which is guarded by sphincter of Boyden. b. The parotid, sub-maxillary and sub-lingual salivary glands are located just outside the buccal cavity. c. In duodenum, glands are only found in submucosa which are Brunner's glands, a type of simple branched tubular glands. d. There is no modification of the four layers namely serosa, muscularis, sub-mucosa and mucosa in different parts of alimentary canal. e. lipases are absent in the secretion of gastric glands. 6 604 Recommended Questions One, Two... 3 Edit Delete
14243 To make pancreatic enzyme in action, which of the following is required? (i) Enterokinase (ii) Bile (iii) Intrinsic factor (iv) HCl 6 604 Recommended Questions (i), (ii), (iii) (iv), (i), (ii) only... 2 Edit Delete
14242 Which of the following is not present in the mucosa of intestine? 6 604 Recommended Questions Crypts of Lieberkuhn, Brunner's gland... 2 Edit Delete
14241 Which of the following enzyme is not included in the secretions of the brush border cells of mucosa? 6 604 Recommended Questions Maltase, Dipeptidase... 4 Edit Delete
14240 Which of the following statements is incorrect? 6 604 Recommended Questions About 30% of starch is hydrolysed in the buccal cavity, Small amounts of lipases are also secreted by gastric glands... 4 Edit Delete
14239 The enzyme that is not present in succus entericus is 6 604 Recommended Questions maltase, nucleases... 2 Edit Delete
14238 Lipases can be activated by: 6 604 Recommended Questions Enterokinase, Enterogastrone... 4 Edit Delete
14237 Three secretions meeting the food in small intestine are: 6 604 Recommended Questions Bile, gastric juice and saliva, Bile, pancreatic juice and gastric juice... 4 Edit Delete
14236 Which of the following enzyme is not a disaccharidase? 6 604 Recommended Questions Sucrase, Lactase... 4 Edit Delete
14235 Succus entericus is the term used for which of the following? 6 604 Recommended Questions A junction present between ileum and large intestine, Foramen present in the heart... 4 Edit Delete
14234 Structure present in the submucosa of GIT is 6 604 Recommended Questions Gastric gland, Villi... 4 Edit Delete
14233 Structure present in the submucosa of GIT is 6 604 Recommended Questions Gastric gland, Villi... 4 Edit Delete
14232 The secretion of the brush border cells along with secretions of goblet cells of present in mucosa of small intestine constitutes: 6 604 Recommended Questions Chyme, Chyle... 3 Edit Delete
14231 Lactose is composed of 6 604 Recommended Questions glucose + fructose, glucose + glucose... 3 Edit Delete
14230 Which of the following is the physiologic calorific value of carbohydrates and proteins (kCal/g)? 6 604 Recommended Questions 4.1, 4.0... 2 Edit Delete
14229 Match the following structures with their respective location in organs: (a) Crypts of Lieberkuhn (i) Pancreas (b) Glisson's Capsule (ii) Duodenum (c) Islets of Langerhans (iii) Small intestine (d) Bruunner's Glands (iv) Liver Select the correct option from the following: 6 604 Recommended Questions iii ii i iv, iii i iv ii... 4 Edit Delete
14228 Which of the following is the physiologic calorific value of fats (kCal/g)? 6 604 Recommended Questions 4.1, 4.0... 4 Edit Delete
14227 Match the column I with column II Column I a. Bilirubin and biliverdin b. Hydrolysis of starch c. Digestion of proteins d. Salivary glands Column II i. Sub-lingual ii. Bile pigments iii. Trypsin iv. Amylase 6 604 Recommended Questions a(ii), b(iv), c(i), d(iii), a(iv), b(i), c(iii), d(ii)... 4 Edit Delete
14226 Brunner's glands occur in 6 604 Recommended Questions sub-mucosa of duodenum, sub-mucosa of stomach... 1 Edit Delete
14225 The intestinal mucosal epithelium has goblet cells which secretes: 6 604 Recommended Questions Digestive enzymes, Intestinal digestive enzymes... 3 Edit Delete
14224 Match the items given in Column - I with those in Column - II and choose the correct option: Column-I (a) Rennin (b) Enterokinase (c) Oxyntic cells (d) Fructose Column-II (i) Vitamin B₁₂ (ii) Facilitated transport (iii) Milk proteins (iv) Trypsinogen 6 604 Recommended Questions iii, iv, ii, i, iv, iii, i, ii... 4 Edit Delete
14223 Match Column-I with Column-II Column I (i) Brunner's gland (ii) Rugae (iii) Succus entericus (iv) Carbohydrate splitting enzyme Column II a. Salivary amylase b. Nucleosidase c. Mucosa layer d. Sub-mucosa Choose the correct option 6 604 Recommended Questions i-d, ii-a, iii-b, iv-c, i-c, ii-d, iii-b, iv-a... 4 Edit Delete
14222 Enterokinase / enteropeptidase takes part in conversion of: 6 604 Recommended Questions Pepsinogen to pepsin, Trypsinogen to trypsin... 2 Edit Delete
14221 How many enzymes in the list given below found in pancreatic juice? Enterokinase, Chymotrypsin, Aminopeptidase, Pepsin, Lactase, Rennin, Carboxypeptidase, Nuclease, Nucleotidase & Elastase: 6 604 Recommended Questions Six, Three... 4 Edit Delete
14220 Chymotrypsinogen and pro-carboxypeptidase of pancreatic juice are activated by 6 604 Recommended Questions Enterokinase, Exopeptidase... 3 Edit Delete
14219 Carbohydrates in the chyme are hydrolysed to disaccharide by amylase of 6 604 Recommended Questions Pancreatic juice, Gastric juice... 1 Edit Delete
14218 One of the constituents of the pancreatic juice while poured into the duodenum in humans is. 6 604 Recommended Questions Enterokinase, Trypsinogen... 2 Edit Delete
14217 Following are certain enzymatic reactions taking place in the human alimentary canal. Each reaction is depicted with suitable enzyme A, B, C and D. Find from the options the correct set of enzymes required to carry out these reactions Starch → Maltose Nucleosides → Sugars + Bases Di and monoglycerides → Fatty acids + Glycerol Trypsinogen → Trypsin 6 604 Recommended Questions A — Pancreatic amylase B — Nucleotidase C — Lipase D — Trypsin, A — Salivary amylase B — Nucleases C — Dipeptidases D — Enterokinase... 4 Edit Delete
14216 Which of the following do not belong to category of brush border enzymes? 6 604 Recommended Questions Lactase, nucleotidase, Aminopeptidase, sucrase... 3 Edit Delete
14215 Which of the following glandular secretions involved in digestion would be most likely released initially as inactive precursors? 6 604 Recommended Questions protein-digesting enzymes, fat-solubilizing bile salts... 1 Edit Delete
14214 Trypsinogen, chymotrypsinogen, procarboxypeptidase, amylase, lipase and nuclease enzymes are found in: 6 604 Recommended Questions Pancreatic juice, Succus entericus / intestinal juice... 1 Edit Delete
14213 Which enzymes are likely to act sequentially on egg white eaten by man as it moves down the alimentary canal? 6 604 Recommended Questions Trypsin → Pepsin → Carboxypeptidase, Pepsin → Trypsin → Carboxypeptidase... 2 Edit Delete
14212 In jaundice - what is not observed? 6 604 Recommended Questions Liver is affected, Skin and eyes turn yellow because of deposition of bile salts... 2 Edit Delete
14211 What will happen if bile duct gets blocked? 6 604 Recommended Questions Faces become dry, Acidic chyme will not be neutralised... 4 Edit Delete
14210 Liver secretes? 6 604 Recommended Questions No digestive enzymes, Many digestive enzymes... 1 Edit Delete
14209 Bile produced in the liver is associated with which of the following? 6 604 Recommended Questions Emulsification of fats into tiny globules (micelles) in the small intestine by bile salts, Digestive action of pancreatic amylase... 1 Edit Delete
14208 Digestion of fats starts in 6 604 Recommended Questions Mouth, Stomach... 3 Edit Delete
14207 Which type of cells are the part of tubular glands of the stomach epithelium? 6 604 Recommended Questions D only, A & D... 4 Edit Delete
14206 Gastric glands are found in 6 604 Recommended Questions Mucosa and submucosa, Crypts of Lierkuhn... 3 Edit Delete
14205 Gastric juice contains 6 604 Recommended Questions Trypsin, lipase, rennin, Pepsin, lipase, rennin... 2 Edit Delete
14204 Which of the following is not a correct match of the substrate, the enzyme acting upon it and the end product? 6 604 Recommended Questions Starch — Amylase — Maltose — Maltase — Glucose, Protein — Pepsin — Peptones/Proteoses... 4 Edit Delete
14203 Gastric juice does not contain: 6 604 Recommended Questions Lipase, Rennin... 4 Edit Delete
14202 Vitamin B12 is absorbed by the help of secretions of which cells of stomach? 6 604 Recommended Questions Goblet cells, Parietal cells... 2 Edit Delete
14201 Which of the following is true about digestion and absorption of food? 6 604 Recommended Questions Trypsin, chymotrypsin and carboxypeptidase are brush border enzymes, The chemical process of digestion is initiated in the oral cavity. About 60% Starch is hydrolysed here by salivary amylase to form maltose... 3 Edit Delete
14200 Mark the correct pair of food components in human which reach to stomach in undigested form 6 604 Recommended Questions Starch and fat, Starch and Protein... 4 Edit Delete
14199 HCl provides the pH which is about 6 604 Recommended Questions 1.8, 3.2... 1 Edit Delete
14198 The food in stomach is called 6 604 Recommended Questions Bolus, Chyme... 2 Edit Delete
14197 If for some reason the parietal cells of the gastric epithelium become partially non-functional, what is likely to happen? 6 604 Recommended Questions The pancreatic enzymes and specially the trypsin and lipase will not work efficiently, The pH of stomach will fall abruptly... 4 Edit Delete
14196 Which of the following gastric secretions is correctly matched with its source? 6 604 Recommended Questions Pepsin-Chief cells, Chymotrypsin-Parietal cells... 1 Edit Delete
14195 Which of the following gastric secretory cells is correctly matched with its secretion(s)? 6 604 Recommended Questions Chief cells - gastrin, parietal cells -- hydrochloric acid and intrinsic factor... 2 Edit Delete
14194 The initial step in the digestion of milk in infants is carried out by? 6 604 Recommended Questions Lipase, Trypsin... 3 Edit Delete
14193 The pH of stomach is 1.6, then which enzyme will digest protein? 6 604 Recommended Questions Trypsin, Pepsin... 2 Edit Delete
14192 What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor? 6 604 Recommended Questions Gastric juice will be deficient in chymosin, Gastric juice will be deficient in pepsinogen... 3 Edit Delete
14191 Pepsin converts: 6 604 Recommended Questions Protein into amino acid, Fat into fatty acid... 4 Edit Delete
14190 The parietal cells or the oxyntic cells located in the stomach's gastric pits mainly secrete:- 6 604 Recommended Questions HCl and Intrinsic factor, Pepsinogen and Gastric lipase... 1 Edit Delete
14189 Which of the following reactions is not catalysed by a brush border enzyme? 6 604 Recommended Questions Maltose → glucose + glucose, Lactose → glucose + glucose... 3 Edit Delete
14188 The saliva secreted by salivary glands does not 6 604 Recommended Questions Contain electrolytes like Na⁺, K⁺, Cl⁻ and HCO₃⁻, Give safety against dental carries... 3 Edit Delete
14187 Which of the following enzyme present in saliva acts as an antibacterial agent that prevents infection? 6 604 Recommended Questions Salivary amylase, Thiocyanate... 3 Edit Delete
14186 Match the following Column I a. Sphincter of boyden b. Sphincter of Oddi c. Cardiac sphincter d. Pyloric sphincter Column II i) Regulates openings of oesophagus into stomach (ii) Surrounds the opening of bile duct into pancreatic duct (iii) Regulates the opening of stomach into small intestine (iv) Surrounds ampulla of vater 6 604 Recommended Questions a(ii), b(iv), c(iii), d(i), a(iv), b(ii), c(i), d(iii)... 4 Edit Delete
14185 Small intestine is distinguishable into 3 parts, a 'C' shaped _______ a long coiled middle portion _______ and a highly coiled: 6 604 Recommended Questions Ileum, jejunum, duodenum, Duodenum, Jejunum, ilium... 3 Edit Delete
14184 To move into the intestinal mucosa, fatty acids and glycerol are first incorporated into: 6 604 Recommended Questions Chyle, Micelles... 2 Edit Delete
14183 The oesophagus and trachea (wind pipe) open into: 6 604 Recommended Questions Gullet, Glottis... 4 Edit Delete
14182 The opening of stomach into duodenum is guarded by: 6 604 Recommended Questions Cardiac sphincter, Sphincter of Boyden... 4 Edit Delete
14181 Which of the following structures prevents the back flow of faecal matter? 6 604 Recommended Questions Cardiac sphincter, Pyloric sphincter... 3 Edit Delete
14180 Choose the incorrect match 6 604 Recommended Questions Auerbach's plexus - Peristalsis, Meissner plexus - Secretion of digestive juices... 3 Edit Delete
14179 Which of the following statements is false? 6 604 Recommended Questions The breakdown of most of biomacromolecules occurs in duodenum, Simple substances (digested foods) are absorbed in the jejunum and ileum... 3 Edit Delete
14178 The portion of human stomach into which the oesophagus opens is the:- 6 604 Recommended Questions Cardiac, Fundus... 1 Edit Delete
14177 The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given. 6 604 Recommended Questions A = Amylase, B = Maltase, C = Lactase, D = Invertase, A = Amylase, B = Maltase, C = Invertase, D = Lactase... 4 Edit Delete
14176 The narrow distal part of stomach leading to the intestine is called: 6 604 Recommended Questions Cardiac, Pyloric... 2 Edit Delete
14175 What regulates the opening of oesophagus into the stomach? 6 604 Recommended Questions A membranous valve, A muscular sphincter... 2 Edit Delete
14174 Sphincter of Oddi will guard the opening of 6 604 Recommended Questions A, B... 4 Edit Delete
14173 Our stomach is: 6 604 Recommended Questions U-shaped, J-shaped... 2 Edit Delete
14172 In the given diagram showing anatomical regions of the human stomach, A, B and C respectively represent: 6 604 Recommended Questions Fundus, Cardia and Pylorus, Cardia, Pylorus and Fundus... 1 Edit Delete
14171 Caecum is small blind sac which hosts some symbiotic micro-organisms. From it a small finger like vestigial organ arises. This organ is called: 6 604 Recommended Questions Parotid gland, Vermis... 3 Edit Delete
14170 Common bile duct includes 6 604 Recommended Questions Right and left hepatic ducts and cystic duct, Common hepatic duct and cystic duct... 2 Edit Delete
14169 Read the following statements:- (a) Human liver is the largest endocrine gland of the body having two lobes. (b) Hepatic lobules are the structural and functional units of the liver and contain hepatocytes which are arranged in a chord-like manner. (c) Glisson’s capsule is covering of each lobule and is made up of connective tissue. (d) Bile juice is formed and secreted by hepatocytes and is stored in a liver sinusoid. Out of these which statements are correct and incorrect? 6 604 Recommended Questions Statements a and b are correct while c & d are incorrect., Statements a and d are correct while b & c are incorrect.... 3 Edit Delete
14168 Common bile duct is formed when: 6 604 Recommended Questions Right and left hepatic ducts are fused, Bile duct is fused with pancreatic duct... 4 Edit Delete
14167 Bile duct and pancreatic duct open together into the duodenum as the common hepato-pancreatic duct which is guarded by a sphincter called 6 604 Recommended Questions Sphincter of Boyden, Pyrolic sphincter... 3 Edit Delete
14166 Cystic duct arises from: 6 604 Recommended Questions Liver, Kidney... 4 Edit Delete
14165 Parotid glands are located below: 6 604 Recommended Questions Eye, Tongue... 4 Edit Delete
14164 The optimum pH for the enzyme salivary amylase is: 6 604 Recommended Questions 4.5, 6.8... 2 Edit Delete
14163 Function of gall bladder is: 6 604 Recommended Questions Storage of bile, Secretion of bile... 1 Edit Delete
14162 Which of the following is incorrect about pancreas? 6 604 Recommended Questions It is compound gland as it has both exocrine and endocrine part, Exocrine part secretes alkaline pancreatic juice having enzymes... 4 Edit Delete
14161 A mass peristaltic movement is responsible for:- 6 604 Recommended Questions Release of bile and pancreatic juice into the duodenum, Passage of chyme from stomach to duodenum... 4 Edit Delete
14160 Study the given diagram and choose the correct statements: I. A is involved in the absorption of fatty acids II. B is a gland 6 604 Recommended Questions Only I, Only II... 3 Edit Delete
14159 The intrinsic nervous system that is responsible for peristalsis is present in which part shown in the given transverse section of the human gut? 6 604 Recommended Questions A, B... 2 Edit Delete
14158 Select the incorrect option. 6 604 Recommended Questions Polysaccharides Amylase → pH 6.8 Amylase Disaccharides, Paneth cells in mucosa of gut secrete lysozyme that has antibacterial effects.... 3 Edit Delete
14157 Mark the incorrect match regarding the process involved in digestion and absorption? 6 604 Recommended Questions Muscular activities of different parts of the alimentary canal. - Hormonal control, Absorption and transport of water - Passive process and depends upon the osmotic gradient... 1 Edit Delete
14156 Peristalsis occurs 6 604 Recommended Questions from the mouth to the small intestine, from the beginning of the esophagus to the anus... 2 Edit Delete
14155 The mucosal layer in the stomach form irregular folds known as:- 6 604 Recommended Questions villi, lumen... 3 Edit Delete
14154 If for some reason our goblet cells are non-functional, this will adversely affect: 6 604 Recommended Questions production of somatostatin, secretion of sebum from the sebaceous glands... 4 Edit Delete
14153 Which of the following is a sub-mucosal gland? 6 604 Recommended Questions Oxyntic glands of stomach, Crypts of Lieberkuhn of small intestine... 3 Edit Delete
14152 Waves of muscle contraction that move the intestinal content are: 6 604 Recommended Questions Caused by contraction of skeletal muscle, Regulated by liver secretions... 3 Edit Delete
14151 Transverse section of gut shows four layers of the wall i.e serosa, muscularis, submucosa and mucosa. Which of the following statements is not correct regarding its arrangement and modification? 6 604 Recommended Questions Serosa is the outermost layer which is made of thin mesothelium, Oblique muscle layer is present in stomach... 4 Edit Delete
14150 Given below is a diagrammatic representation of transverse section of gut. Choose the option which is correct for the layers labelled as A, B, C, and E. 6 604 Recommended Questions A — Serosa, B — Longitudinal muscle layer, C — Circular muscle layer, D — Mucosa, E — Submucosa, A — Mucosa, B — Circular muscle layer, C — Longitudinal muscle layer, D — Submucosa, E — Serosa... 4 Edit Delete
14149 Muscularis layer of the wall of the alimentary canal is formed by:- 6 604 Recommended Questions Smooth muscle arranged into an inner longitudinal and an outer circular layer, Smooth muscle arranged into an inner circular and an outer longitudinal layer... 2 Edit Delete
14148 Mucosa forms irregular folds (rugae) in the: 6 604 Recommended Questions Ileum, Stomach... 2 Edit Delete
14147 Brunner's gland are characteristic feature of:- 6 604 Recommended Questions jejunum of small intestine, ileum... 3 Edit Delete
14146 Duodenal glands / Brunner's glands are present in: 6 604 Recommended Questions Submucosa, Mucosa... 1 Edit Delete
14145 The undigested substance (faeces) enter into the _______ of large intestine through _______ valve which prevents backflow of faecal matter: 6 604 Recommended Questions Caecum, ileo-caecal, Colon, ileo-colon valve... 1 Edit Delete
14144 When each tooth is embedded in a socket of jaw bone, then this type of attachment is called 6 604 Recommended Questions Thecodont, Lophodont... 1 Edit Delete
14143 Alimentary canal begins with:- 6 604 Recommended Questions An vertical slit, the mouth, An anterior opening, buccal cavity... 4 Edit Delete
14142 In mammals, the teeth are. I. only two sets, present throughout life. II. embedded in the socket of the jaw bones. III. different types. These conditions are respectively referred as 6 604 Recommended Questions diphyodont, heterodont and thecodont, diphyodont, thecodont and heterodont... 2 Edit Delete
14141 The hard chewing surface of teeth helping in mastication of food is called: 6 604 Recommended Questions Dentine, Frenulum... 4 Edit Delete
14140 Muscularis layer in the wall of the alimentary canal is formed by smooth muscles usually arranged into:- 6 604 Recommended Questions an inner circular and an outer longitudinal layer., an inner longitudinal and an outer circular layer.... 1 Edit Delete
14139 Process of conversion of complex food substances to simple absorbable form is called:- 6 604 Recommended Questions Assimilation, Deamination... 3 Edit Delete
14138 Which of the following cannot be the parasites of intestine? 6 604 Recommended Questions Tapeworm, Pinworm... 3 Edit Delete
14137 In addition to neural control, hormones also influence the: 6 604 Recommended Questions Gastric secretions, Intestinal secretions... 4 Edit Delete
14136 Frenulum is: 6 604 Recommended Questions Adenoid present on pharyngeal wall, Tonsils located on lateral wall of soft palate... 3 Edit Delete
14135 Which of the following components of our food are taken in small quantities? 6 604 Recommended Questions Carbohydrate and proteins, Proteins and minerals... 4 Edit Delete
14134 Populations subsisting primarily on corn would likely to suffer from: 6 604 Recommended Questions PEM, Pellagra... 2 Edit Delete
14133 Anxiety and eating spicy food together in an otherwise normal human, may lead to 6 604 Recommended Questions indigestion, jaundice... 1 Edit Delete
14132 231 6 603 Recommended Questions 1, 2... 1 Edit Delete
14131 230 6 603 Recommended Questions 1, 2... 1 Edit Delete
14130 229 6 603 Recommended Questions 1, 2... 1 Edit Delete
14129 228 6 603 Recommended Questions 1, 2... 1 Edit Delete
14128 227 6 603 Recommended Questions 1, 2... 1 Edit Delete
14127 226 6 603 Recommended Questions 1, 2... 1 Edit Delete
14126 225 6 603 Recommended Questions 1, 2... 1 Edit Delete
14125 224 6 603 Recommended Questions 1, 2... 1 Edit Delete
14124 223 6 603 Recommended Questions 1, 2... 1 Edit Delete
14123 222 6 603 Recommended Questions 1, 2... 1 Edit Delete
14122 221 6 603 Recommended Questions 1, 2... 1 Edit Delete
14121 220 6 603 Recommended Questions 1, 2... 1 Edit Delete
14120 219 6 603 Recommended Questions 1, 2... 1 Edit Delete
14119 218 6 603 Recommended Questions 1, 2... 1 Edit Delete
14118 217 6 603 Recommended Questions 1, 2... 1 Edit Delete
14117 216 6 603 Recommended Questions 1, 2... 1 Edit Delete
14116 215 6 603 Recommended Questions 1, 2... 1 Edit Delete
14115 214 6 603 Recommended Questions 1, 2... 1 Edit Delete
14114 213 6 603 Recommended Questions 1, 2... 1 Edit Delete
14113 212 6 603 Recommended Questions 1, 2... 1 Edit Delete
14112 211 6 603 Recommended Questions 1, 2... 1 Edit Delete
14111 210 6 603 Recommended Questions 1, 2... 1 Edit Delete
14110 209 6 603 Recommended Questions 1, 2... 1 Edit Delete
14109 208 6 603 Recommended Questions 1, 2... 1 Edit Delete
14108 207 6 603 Recommended Questions 1, 2... 1 Edit Delete
14107 206 6 603 Recommended Questions 1, 2... 1 Edit Delete
14106 205 6 603 Recommended Questions 1, 2... 1 Edit Delete
14105 204 6 603 Recommended Questions 1, 2... 1 Edit Delete
14104 203 6 603 Recommended Questions 1, 2... 1 Edit Delete
14103 202 6 603 Recommended Questions 1, 2... 1 Edit Delete
14102 201 6 603 Recommended Questions 1, 2... 1 Edit Delete
14101 200 6 603 Recommended Questions 1, 2... 1 Edit Delete
14100 199 6 603 Recommended Questions 1, 2... 1 Edit Delete
14099 198 6 603 Recommended Questions 1, 2... 1 Edit Delete
14098 197 6 603 Recommended Questions 1, 2... 1 Edit Delete
14097 196 6 603 Recommended Questions 1, 2... 1 Edit Delete
14096 195 6 603 Recommended Questions 1, 2... 1 Edit Delete
14095 194 6 603 Recommended Questions 1, 2... 1 Edit Delete
14094 193 6 603 Recommended Questions 1, 2... 1 Edit Delete
14093 192 6 603 Recommended Questions 1, 2... 1 Edit Delete
14092 191 6 603 Recommended Questions 1, 2... 1 Edit Delete
14091 190 6 603 Recommended Questions 1, 2... 1 Edit Delete
14090 189 6 603 Recommended Questions 1, 2... 1 Edit Delete
14089 188 6 603 Recommended Questions 1, 2... 1 Edit Delete
14088 187 6 603 Recommended Questions 1, 2... 1 Edit Delete
14087 186 6 603 Recommended Questions 1, 2... 1 Edit Delete
14086 185 6 603 Recommended Questions 1, 2... 1 Edit Delete
14085 184 6 603 Recommended Questions 1, 2... 1 Edit Delete
14084 183 6 603 Recommended Questions 1, 2... 1 Edit Delete
14083 182 6 603 Recommended Questions 1, 2... 1 Edit Delete
14082 181 6 603 Recommended Questions 1, 2... 1 Edit Delete
14081 180 6 603 Recommended Questions 1, 2... 1 Edit Delete
14080 179 6 603 Recommended Questions 1, 2... 1 Edit Delete
14079 178 6 603 Recommended Questions 1, 2... 1 Edit Delete
14078 177 6 603 Recommended Questions 1, 2... 1 Edit Delete
14077 176 6 603 Recommended Questions 1, 2... 1 Edit Delete
14076 175 6 603 Recommended Questions 1, 2... 1 Edit Delete
14075 174 6 603 Recommended Questions 1, 2... 1 Edit Delete
14074 173 6 603 Recommended Questions 1, 2... 1 Edit Delete
14073 172 6 603 Recommended Questions 1, 2... 1 Edit Delete
14072 171 6 603 Recommended Questions 1, 2... 1 Edit Delete
14071 170 6 603 Recommended Questions 1, 2... 1 Edit Delete
14070 Which of the following secondary metabolites is an anticancer drug? 6 603 Recommended Questions Vinblastin, Concanavalin A... 1 Edit Delete
14069 Carotenoids and anthocyanin pigments are examples of 6 603 Recommended Questions Primary metabolites, Secondary metabolites... 2 Edit Delete
14068 How many groups of the methane can be substituted to form an amino acid Glycine. 6 603 Recommended Questions 4, 3... 4 Edit Delete
14067 Which group of the amino acid contributes essentially to the chemical and physical properties of amino acids? 6 603 Recommended Questions Amino group, Carboxyl group... 4 Edit Delete
14066 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I (Amino Acid) Column II (Nature) I. Tryptophan 1. Sulfur-containing II. Cysteine 2. Aromatic III. Valine 3. Basic IV. Lysine 4. Neutral Codes: I II III IV 6 603 Recommended Questions 1 2 3 4, 2 1 4 3... 2 Edit Delete
14065 Identify the amino acid with hydroxymethyl as its R group: 6 603 Recommended Questions Glycine, Alanine... 3 Edit Delete
14064 How many types of proteinaceous amino acids are there? 6 603 Recommended Questions 20, more than 20... 1 Edit Delete
14063 The body meets the demand of essential amino acids through 6 603 Recommended Questions Food, Body synthesised on its own... 1 Edit Delete
14062 Following is the diagrammatic representation of three different amino acids labelled as 1, 2 and 3? Select the option which is correct identification of amino acids 1, 2 and 3. 6 603 Recommended Questions Glycine, Valine, Threonine, Glycine, Isoleucine, Aspartic acid... 3 Edit Delete
14061 Category of aromatic amino acids include all except 6 603 Recommended Questions Serine, Tyrosine... 1 Edit Delete
14060 The zwitterion is shown by: 6 603 Recommended Questions Only A, Only B... 2 Edit Delete
14059 Which of the following is the simplest amino acid? 6 603 Recommended Questions Alanine, Asparagine... 3 Edit Delete
14058 Lecithin is formed by 6 603 Recommended Questions Fatty acid (2) + Phosphoric acid (1) + Ethanolamine, Fatty acid (2) + Phosphoric acid (1) + Serine... 4 Edit Delete
14057 Which one of the following biomolecules is correctly characterized? 6 603 Recommended Questions Lecithin – a phosphorylated glyceride found in cell membrane, Palmitic acid – an unsaturated fatty acid with 18 carbon atoms... 1 Edit Delete
14056 Which of the following is diagrammatic representation of phospholipid (lecithin)? 6 603 Recommended Questions CH₂OH | CH₂OH | CH₂OH, O || R₂C-O-CH₂-C-O-R₁ | O || CH₂-C-O-R₃... 3 Edit Delete
14055 The molecule that provides stability to cell membrane is 6 603 Recommended Questions CH₂OH CH₂OH CH₂OH, HN C O CH NH... 3 Edit Delete
14054 Which of the following is true about Cholesterol? 6 603 Recommended Questions It contains four fused hydrocarbon rings, Organic molecule... 4 Edit Delete
14053 Which of the following is true about Lipids 6 603 Recommended Questions It is a polymer of Fatty acids and Glycerol, Water soluble... 4 Edit Delete
14052 Which one is false? 6 603 Recommended Questions Fatty acids may be unsaturated (with one or more C = C bonds) or saturated (without double bonds), Fatty acid(s) may be esterified with glycerol forming monoglyceride, diglyceride and then triglyceride... 3 Edit Delete
14051 Upon complete hydrolysis, one molecule of triglyceride will yield how many molecules of fatty acids? 6 603 Recommended Questions 1, 2... 3 Edit Delete
14050 Find the wrong statement 6 603 Recommended Questions Living state is non-equilibrium steady state to be able to perform work, There is no uncatalysed metabolic conversion in living systems... 4 Edit Delete
14049 Consider the following statements: I: There is no uncatalysed metabolic conversion in living systems. II: The living state is a non-equilibrium steady state to be able to perform work. III: The living state and metabolism are synonyms, without metabolism there cannot be a living state. Which of the above statements are true? 6 603 Recommended Questions I and II only, I and III only... 4 Edit Delete
14048 Which of the following elements is present in higher proportion [% weight of the total] in Earth's crust with respect to the average composition of a human body? 6 603 Recommended Questions Carbon, Nitrogen... 4 Edit Delete
14047 Which of the following elements is present in higher proportion [% weight of the total] in Earth's crust with respect to the average composition of a human body? 6 603 Recommended Questions Carbon, Nitrogen... 4 Edit Delete
14046 About 98% of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and: 6 603 Recommended Questions Phosphorous and sulphur, Sulphur and magnesium... 1 Edit Delete
14045 In a normal adult, ascending order of concentration of following molecules is 6 603 Recommended Questions K > Na > Fe > Cu, Na > K > Cu > Fe... 1 Edit Delete
14044 In an average composition of a cell, the maximum % of total cellular mass [after water and protein] is constituted by: 6 603 Recommended Questions Carbohydrates, Lipid... 3 Edit Delete
14043 In a 50 gm living tissue, what would be the amount of water? 6 603 Recommended Questions 15-25 gm, 25-30 gm... 3 Edit Delete
14042 There cannot be a living state without: 6 603 Recommended Questions Metabolism, Capability of reproduction... 1 Edit Delete
14041 Which of the following elements is present in very less quantity in the body? 6 603 Recommended Questions K, Ca... 4 Edit Delete
14040 The six most common atoms in organic molecules are: 6 603 Recommended Questions Carbon, Hydrogen, Oxygen, Helium, Calcium and Sulphur, Carbon, Hydrogen, Oxygen, Calcium, Magnesium and Sulphur... 4 Edit Delete
14039 Which of the following is true? 6 603 Recommended Questions All the elements present in a sample of earth's crust are also present in a sample of living tissue, Carbon and Hydrogen are present in more amount in any living organism than earth's crust.... 4 Edit Delete
14038 Which of the following secondary metabolites is a polymeric substance? 6 603 Recommended Questions Ricin, Monoterpenes... 4 Edit Delete
14037 Which of the following element is present in negligible amount in human body? 6 603 Recommended Questions Magnesium, Sulphur... 3 Edit Delete
14036 Which of the following is not strictly a biomacromolecule? 6 603 Recommended Questions Proteins, Lipids... 2 Edit Delete
14035 Which of the following is not a strict macromolecules? 6 603 Recommended Questions Carbohydrates, Nucleic acids... 4 Edit Delete
14034 Three of the following statements about enzymes are correct and one is wrong. Which one is wrong? 6 603 Recommended Questions Enzymes are denatured at high temperatures but in certain exceptional organisms they are effective even at temperatures 80° - 90°C, Enzymes are highly specific... 3 Edit Delete
14033 Which of the following statements about enzymes is true? 1. Enzymes do not alter the overall change in free energy for a reaction 2. Enzymes are proteins whose three dimensional shape is key to their functions 3. Enzymes speed up reactions by lowering activation energy 4. Enzyme are highly specific for reactions 5. An enzyme like any protein has the secondary and tertiary structure. 6. The energy input needed to start a chemical reaction is called activation energy 6 603 Recommended Questions All are correct, All except 5... 1 Edit Delete
14032 A non-proteinaceous enzyme is 6 603 Recommended Questions lysozyme, ribozyme... 2 Edit Delete
14031 CO₂ dissolving in water is a 6 603 Recommended Questions Physical process, Catalysed process in living system... 4 Edit Delete
14030 Which of the following describes the given graph correctly? 6 603 Recommended Questions Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme, Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme... 2 Edit Delete
14029 Which one is correct? 6 603 Recommended Questions Inorganic catalysts work efficiently at high temperature and high pressure while enzymes get damaged at high temperature (above 40°C), Thermophilic organisms living in hot vents and sulphur springs have enzymes that are stable and retain their catalytic power even at high temperature (80 - 90°C)... 4 Edit Delete
14028 Which of the following is true? 6 603 Recommended Questions The conversion of acetic acid to cholesterol is an anabolic process., The conversion of glucose to lactic acid is a catabolic process.... 4 Edit Delete
14027 Which of the following is true about carbonic anhydrase? 6 603 Recommended Questions It accelerates the rate of formation of carbonic acid by 10 million times., In its absence only 200 molecules of carbonic acid is formed in an hour.... 4 Edit Delete
14026 Find the correct statement 1. Catalysed reactions proceed at rates higher than that of uncatalysed ones. 2. In skeletal muscle under anaerobic conditions lactic acid is formed from pyruvic acid. 3. In yeast during fermentation ethanol is formed from pyruvic acid. 4. All of these 6 603 Recommended Questions Catalysed reactions proceed at rates higher than that of uncatalysed ones., In skeletal muscle under anaerobic conditions lactic acid is formed from pyruvic acid.... 4 Edit Delete
14025 The substrate has to go through a much higher energy state or transition state in case of: 6 603 Recommended Questions Exothermic reactions only, Endothermic reactions only... 3 Edit Delete
14024 Which of the following describes the graph correctly? 6 603 Recommended Questions Endothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme, Exothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme... 2 Edit Delete
14023 During catalytic cycle of an enzyme action the binding of the __a__ induces the __b__ to alter its shape. Here a and b is ________ 6 603 Recommended Questions Substrate, enzyme., Enzyme, substrate.... 1 Edit Delete
14022 Transition state structure of the substrate formed during an enzymatic reaction is 6 603 Recommended Questions Transient but stable, Permanent but unstable... 3 Edit Delete
14021 Activation energy: (1) Is the difference in the average energy content of 'S' from that of its transition state (2) Helps to change reactants into unstable transition state before they can be converted into products (3) Is minimum energy required from outside to overcome the energy barrier of reactant or to start a reaction (4) All are correct 6 603 Recommended Questions Is the difference in the average energy content of 'S' from that of its transition state, Helps to change reactants into unstable transition state before they can be converted into products... 4 Edit Delete
14020 A. Catalyses the transfer of a group (other than hydrogen). B. Catalyses removal group from substrates by mechanism other than hydrolysis leaving double bond C. Catalyzing the linking of 2 molecules by using energy into one molecule. Identify the classes of enzymes for above functions: 6 603 Recommended Questions Ligase Lyase Transferase, Transferase Lyase Ligase... 2 Edit Delete
14019 Which of the following is correct? 6 603 Recommended Questions The ES complex formation is a transient phenomenon, The structure of the substrate gets transformed into the structure of product.... 4 Edit Delete
14018 Which one of the following graphs show the relationship between the rate of an enzymatic activity and substrate conc. (S): 6 603 Recommended Questions Graph (a), Graph (b)... 4 Edit Delete
14017 Enzymes work at optimum temperature. Over a range of 0 to 40°C, what would happen to the rate of enzyme controlled reactions for every 10°C rise in temperature? 6 603 Recommended Questions The rate doubles itself, Decreases by half... 1 Edit Delete
14016 The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration) what do the two axis (X and Y) represent? 6 603 Recommended Questions X-axis: Temperature, Y-axis: Enzyme activity, X-axis: Substrate concentration, Y-axis: Enzyme activity... 1 Edit Delete
14015 Mark the Incorrect statement 6 603 Recommended Questions Co-enzymes are also organic compounds but their association with apoenzyme is only transient, Vmax (maximum velocity) represent that there are no substrate molecules to bind with free enzyme molecule... 2 Edit Delete
14014 Which one of the graphs show the effect of temperature on the velocity of a typical enzymatic reaction? 6 603 Recommended Questions Graph a, Graph b... 3 Edit Delete
14013 Which one of the graphs shows the effect of pH on the velocity of a typical enzymatic reaction (V)? 6 603 Recommended Questions Graph 1, Graph 2... 3 Edit Delete
14012 kₘ (Michaelis constant) value of enzyme is the substrate concentration at which velocity of reaction 6 603 Recommended Questions Vmax, one fourth of Vmax... 4 Edit Delete
14011 Which of the following is incorrect? 6 603 Recommended Questions Enzymatic activity is maximum at its optimum pH and temperature., Enzymatic activity declines both below and above the optimum value.... 3 Edit Delete
14010 Which of the following is true? 6 603 Recommended Questions Inorganic catalyst work efficiently at high temperatures and high pressures, Generally, enzymes get damaged at high temperatures... 4 Edit Delete
14009 Which of the following is true? 6 603 Recommended Questions Inorganic catalyst work efficiently at high temperatures and high pressures, Generally, enzymes get damaged at high temperatures... 4 Edit Delete
14008 Which of the following is correct? 6 603 Recommended Questions Physical change refers to change in shape without breaking the bonds, Change in state of matter also takes place in physical change... 4 Edit Delete
14007 In non-competitive inhibition: 1. the substrate and inhibitor cannot bind to the enzyme at the same time 2. the inhibitor binds only to the substrate-enzyme complex 3. the inhibitor can bind to the enzyme at the same time as the enzyme's substrate 4. the binding of the inhibitor to the enzyme reduces its activity but does not affect the binding of substrate 6 603 Recommended Questions the substrate and inhibitor cannot bind to the enzyme at the same time, the inhibitor binds only to the substrate-enzyme complex... 4 Edit Delete
14006 Given below is the graph showing the effect of substrate concentration on enzyme activity. In the presence of a competitive inhibitor, when the concentration of the substrate is progressively increased: 6 603 Recommended Questions The Km value increases but the reaction will not achieve Vmax, The Km value increases but the reaction can ultimately achieve Vmax... 2 Edit Delete
14005 Select the option which is not correct with respect to enzyme action. 6 603 Recommended Questions Substrate binds with enzyme as its active site, Addition of lot of succinate does not reverse the inhibition of succinic dehydrogenase by malonate.... 2 Edit Delete
14004 Which of the following class of enzyme catalyse removal of groups from substrates by mechanism other than hydrolysis leaving double bonds? 6 603 Recommended Questions Lyases, Ligases... 1 Edit Delete
14003 The adjoining graph shows change in conc. of substrate on enzyme activity. Identify A, B and C: 6 603 Recommended Questions A: Ki, B: Km, C: Vmax, A: Vmax/2, B: Km, C: Ki... 3 Edit Delete
14002 The inhibition of succinic dehydrogenase by malonate is an example of 6 603 Recommended Questions competitive inhibition, non-competitive inhibition... 1 Edit Delete
14001 In competitive inhibition: (1) Inhibitor resembles the substrate in molecular structure (2) Competition between substrates and inhibitors to occupy active sites (3) Binding the inhibitors to activities sites declines the enzyme action (4) All are correct 6 603 Recommended Questions Inhibitor resembles the substrate in molecular structure, Competition between substrates and inhibitors to occupy active sites... 4 Edit Delete
14000 In competitive inhibition: 6 603 Recommended Questions Inhibitor resembles the substrate in molecular structure, Competition between substrates and inhibitors to occupy active sites... 4 Edit Delete
13999 Which of the following set of coenzymes are nucleotides of vitamin niacin? 6 603 Recommended Questions NAD, NADP, FMN, FAD... 1 Edit Delete
13998 The competitive inhibitor of enzyme succinic dehydrogenase is 6 603 Recommended Questions succinate, malonate... 2 Edit Delete
13997 Study the reaction given below CO₂ + H₂O ⇌ H₂CO₃ In absence of any enzyme this reaction is very slow, with 200 molecules of H₂CO₃ formed in one hour. In presence of an enzyme the reaction speeds up dramatically with about 600,000 molecules formed every second. Name the enzyme which has accelerated up the reaction by 10 million times. 6 603 Recommended Questions Ribozyme, Carbonic anhydrase... 2 Edit Delete
13996 Which of the following statements regarding enzyme inhibition is correct? 6 603 Recommended Questions Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein, Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme... 2 Edit Delete
13995 Consider the following statements: (A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group (B) A complete catalytic enzyme with its bound prosthetic group is called apoenzyme 6 603 Recommended Questions (A) is False but (B) is True, Both (A) and (B) are True... 4 Edit Delete
13994 The vitamin Niacin functions as a coenzyme in: 6 603 Recommended Questions Nucleoprotein synthesis, Hydrogen transport... 1 Edit Delete
13993 When the co-factor is removed from the enzyme, the catalytic activity: 6 603 Recommended Questions is lost., is reduced.... 1 Edit Delete
13992 Which of the following organic compound association with the apoenzyme is only transient? 6 603 Recommended Questions Prosthetic group, Coenzymes... 2 Edit Delete
13991 The cofactor present in the enzyme peroxidase is 6 603 Recommended Questions NADP, NAD... 3 Edit Delete
13990 The non-protein constituent of the enzymes are called 6 603 Recommended Questions Apoenzyme, Holoenzyme... 3 Edit Delete
13989 The essential chemical components of many coenzymes are: 6 603 Recommended Questions Nucleic acid, Carbohydrates... 3 Edit Delete
13988 An organic substance bound to an enzyme and essential for its activity is called: 6 603 Recommended Questions coenzyme, holoenzyme... 1 Edit Delete
13987 Which of the following is an organic compound? 6 603 Recommended Questions Prosthetic group, Coenzymes... 4 Edit Delete
13986 I. Small organic molecules II. Difficult to remove without denaturing the enzyme III. Haem is an example The above characters are of which of the following co-factors of an enzyme? 6 603 Recommended Questions Metal ions, Prosthetic groups... 2 Edit Delete
13985 The protein constituent of the enzymes are called 6 603 Recommended Questions Apoenzyme, Prosthetic group... 1 Edit Delete
13984 Most enzymes consist of two parts i.e. 6 603 Recommended Questions Holoenzyme and prosthetic group, Enzyme and coenzyme... 4 Edit Delete
13983 Which of the following contain the vitamin niacin? 6 603 Recommended Questions NAD, NADP... 4 Edit Delete
13982 Which of the following cofactor is essential for the proteolytic enzyme carboxypeptidase? 6 603 Recommended Questions Zinc, Copper... 1 Edit Delete
13981 Which of the following are co-factors? 6 603 Recommended Questions Co-enzymes, Metal ions... 4 Edit Delete
13980 How many statements are false from given information? (a) Ribozymes are enzyme made up of protein. (b) In every chemical reaction transition state energy is always greater than activation energy. (c) Co-factors are always proteinous in nature (d) Enzyme inhibition can not be removed. (e) Enzyme action can be stopped at low temp. (f) Km value (Michaelis constant) is the specific concentration of substrate molecule. 6 603 Recommended Questions 2, 3... 2 Edit Delete
13979 Look at the graph given below. The reaction rate the reaction can be increased beyond point C by: 6 603 Recommended Questions increasing the amount of substrate, adding more water... 3 Edit Delete
13978 The following graphs show enzymatic activity for certain factors on x-axis and y-axis. Which of the following is correct in such regard? 6 603 Recommended Questions Figure (1); x-axis - Potential energy, y-axis- Progress of reaction, Figure (2); x-axis - Enzymatic activity, y-axis- Temperature... 4 Edit Delete
13977 Which of the following does not affect the activity of simple enzyme? 6 603 Recommended Questions Temperature, Presence of coenzymes... 2 Edit Delete
13976 Which of the following does not affect the activity of simple enzyme? 6 603 Recommended Questions Temperature, Presence of coenzymes... 2 Edit Delete
13975 The rate of enzyme action decreases at higher temperature [after a certain value] because the increased heat 6 603 Recommended Questions changes the pH of the system, alters the active site of the enzyme... 2 Edit Delete
13974 The Km value of an enzyme denotes the substrate concentration at which the enzyme catalyzed reaction: 6 603 Recommended Questions Reaches Vmax, Shows decline in the rate of reaction... 3 Edit Delete
13973 The Km value of an enzyme denotes the substrate concentration at which the enzyme catalyzed reaction: 6 603 Recommended Questions Reaches Vmax, Shows a decline in the rate of reaction... 3 Edit Delete
13972 Inhibition of succinate dehydrogenase by malonate is an example of: 6 603 Recommended Questions Non-competitive inhibition, Competitive inhibition... 2 Edit Delete
13971 During catalytic cycle of an enzyme– 6 603 Recommended Questions Enzyme alter its shape to fit the substrate molecule., Substrate alter its shape to get fit into the enzyme molecule.... 1 Edit Delete
13970 Transition state structure of the substrate formed during an enzymatic reaction is 6 603 Recommended Questions transient but stable, permanent but unstable... 3 Edit Delete
13969 The figure given below shows the conversions of a substrate into product by an enzyme. In which one of the four options (1-4), the components of the reaction labelled as A, B, C and D are identified correctly: 6 603 Recommended Questions A: Transition state, B: Potential energy, C: Activation energy without enzyme, D: Activation energy with enzyme, A: Potential energy, B: Transition state, C: Activation energy with enzyme, D: Activation energy without enzyme... 1 Edit Delete
13968 Which of the following is correct for enzyme catalysed reaction? 6 603 Recommended Questions Substrate is converted into Enzyme, Substrate is consumed in the reaction completely... 3 Edit Delete
13967 Enzymes catalyse biochemical reactions by 6 603 Recommended Questions Lowering the activation energy, Increasing the activation energy... 1 Edit Delete
13966 All enzymes are proteins except 6 603 Recommended Questions Trypsin, Pepsin... 4 Edit Delete
13965 The steps in catalytic cycle of an enzyme action are given in random order I. The enzyme releases the products. Now enzyme is free to bind another substrate II. The active sites, now in close proximity of substrate break the bond of substrate and E – P complex forms III. Binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate IV. The substrate binds to the active site of enzyme (i.e., fitting into the active site). The correct order is 6 603 Recommended Questions I, II, III, IV, IV, III, II, I... 2 Edit Delete
13964 Electron transferring enzymes belongs to which class of enzymes 6 603 Recommended Questions Transferases, Oxidoreductases... 2 Edit Delete
13963 Select the option which is incorrect for enzyme catalase. 6 603 Recommended Questions The cofactor present is inorganic and proteinaceous in nature, Haem is the prosthetic group required by the enzyme... 1 Edit Delete
13962 Which of the following class of enzyme catalyse the joining of C-O and hydrolysis of C-N bonds respectively? 6 603 Recommended Questions Lyases and Ligases, Ligases and Lyases... 3 Edit Delete
13961 The reaction, X—C—Y—C—C → X—Y + C=C is catalyzed by a/an 6 603 Recommended Questions Transferase, Hydrolase... 3 Edit Delete
13960 Which of the following class of enzyme is used for catalysing hydrolysis of ester, ether, peptide bonds? 6 603 Recommended Questions Lyases, Ligases... 3 Edit Delete
13959 Which of the following class of enzymes helps in catalysing a transfer of a group (other than hydrogen) between a pair of substrates? 6 603 Recommended Questions Ligases, Lyases... 3 Edit Delete
13958 Which of the following class of enzyme catalyse the linking together of 2 compounds? 6 603 Recommended Questions Lyases, Ligases... 2 Edit Delete
13957 Category of enzymes that includes all enzymes catalysing interconversion of optical, geometric or positional isomers are called 6 603 Recommended Questions Lyases, Ligases... 3 Edit Delete
13956 NAD and NADP are considered as 6 603 Recommended Questions Apoenzyme and cofactor respectively., Coenzyme and co-factor respectively.... 3 Edit Delete
13955 What level of protein organization structure explains the 3-D shape of an enzyme? 6 603 Recommended Questions primary structure, tertiary structure... 2 Edit Delete
13954 Prosthetic groups differ from co-enzymes, in which: 6 603 Recommended Questions they require metal ions for their activity., they (prosthetic groups) are tightly bound to apoenzymes.... 2 Edit Delete
13953 Which of the following statements is not correct? 6 603 Recommended Questions Carbonic anhydrase enzyme accelerate the rate of reaction CO₂ + H₂CO₃ by 10⁷ times, Functional aspect of enzymes is related to the tertiary structure of proteins... 3 Edit Delete
13952 Similarity between Inulin, Lecithin and Insulin is - 6 603 Recommended Questions All are polymeric compound., All are natural polypeptides.... 4 Edit Delete
13951 Which one of the following structural formulae of two organic compounds are correctly identified along with its related function? 6 603 Recommended Questions A- Triglyceride – a major source of energy, B- Uracil – a component of DNA... 3 Edit Delete
13950 Fats and oils are 6 603 Recommended Questions Glycolipids, Triglycerides... 2 Edit Delete
13949 The number of correct statements amongst the given statements is: I. Amino acids are substitute methanes. II. The R group in serine is hydroxyl-methyl. III. Arachidonic acid has 20 carbon atoms including the carboxyl carbon. IV. Glycerol is trihydroxypropane. V. Lecithin is a phospholipid. 6 603 Recommended Questions 2, 3... 4 Edit Delete
13948 In triglycerides, glycerol is linked to fatty acid with a/an 6 603 Recommended Questions Ether bond, Ester bond... 2 Edit Delete
13947 The given structure represents a 6 603 Recommended Questions Glycolipid, Steroid... 3 Edit Delete
13946 Which one of the following is False? 6 603 Recommended Questions Fatty acids and glycerol are soluble in water, phospholipids are found in the cell membrane... 1 Edit Delete
13945 Which of the following is true about Glycerol 6 603 Recommended Questions It is trihydroxy propane, Fatty acids are esterified with glycerol... 4 Edit Delete
13944 Which of the following is true about lipids? 6 603 Recommended Questions Small molecular weight compounds, Molecular do not exceed above 800 Da... 4 Edit Delete
13943 In the formation of a macromolecule, what type of reaction would join two subunits together? 6 603 Recommended Questions hydrophobic reaction, hydrolysis reaction... 3 Edit Delete
13942 An example of protein with quaternary structure is 6 603 Recommended Questions Myoglobin, Hemoglobin... 2 Edit Delete
13941 Read the following statement (A-D): (a) Each protein is a polymer of amino acids. (b) A protein is a hetero polymer and not a homopolymer. (c) Dietary proteins are the source of essential amino acid. (d) Collagen is the most abundant protein in whole of the biosphere. How many of the above statement are right? 6 603 Recommended Questions Three, One... 1 Edit Delete
13940 Biologists describe the protein structure at four levels. Which level described the sequence of amino acids, i.e., the positional information in a protein? 6 603 Recommended Questions Primary structure, Secondary structure... 1 Edit Delete
13939 The “primary structure” of a protein refers to: 6 603 Recommended Questions coiling due to hydrogen bonding between amino acids, the alpha helix or pleated sheets... 4 Edit Delete
13938 Which one is the most abundant protein in the animal world? 6 603 Recommended Questions Collagen, RUBISCO... 1 Edit Delete
13937 Which protein is found in the maximum amount: 6 603 Recommended Questions Catalase, Zinc carbonic anhydrase... 4 Edit Delete
13936 Zwitterions are ionized species of 6 603 Recommended Questions Acidic amino acids, Basic amino acids... 4 Edit Delete
13935 Non-essential amino acids 6 603 Recommended Questions Must be obtained from, Are synthesized in our body... 4 Edit Delete
13934 A basic amino acid among the following is 6 603 Recommended Questions Glutamate, Aspartate... 3 Edit Delete
13933 Nucleic acids exhibit 6 603 Recommended Questions Secondary structure, Tertiary structure... 1 Edit Delete
13932 Select the correct statement 6 603 Recommended Questions The base pairs in DNA are stacked 0.34 nm apart, The diameter of a right handed helical ds B-DNA molecules is 34 Å... 1 Edit Delete
13931 Give below is a diagrammatic representation which indicates the secondary structure of DNA. Choose the correct option for the structures labelled as A, B, C and D. 6 603 Recommended Questions A. Guanine B. Cytosine C. Adenine D. Thymine, A. Guanine B. Thymine C. Adenine D. Cytosine... 3 Edit Delete
13930 Backbone of DNA is formed by:- 6 603 Recommended Questions Sugar — Phosphate — Sugar, Nitrogen base — Phosphate — Sugar... 1 Edit Delete
13929 In which of the following energy is released? 6 603 Recommended Questions Conversion of glucose into pyruvate, Formation of proteins from amino acids... 4 Edit Delete
13928 In B-DNA, one full turn of the helical strand contains 6 603 Recommended Questions 11 base pairs, 8 base pairs... 3 Edit Delete
13927 If the sequence of bases in one of the DNA strand is A G G A G A G A A, then the sequence of bases in the other complementary strand of DNA would be 6 603 Recommended Questions C C T T C T T, T C T C T C C... 3 Edit Delete
13926 Nucleotide is made up of 6 603 Recommended Questions Heterocyclic compound, Monosaccharide, Phosphoric acid., Nitrogenous base, hexose sugar, phosphate.... 1 Edit Delete
13925 C' represents carbon of 6 603 Recommended Questions sugar of nucleotides, Nitrogenous bases of nucleotides... 1 Edit Delete
13924 Which of the following represents uridylic acid? 6 603 Recommended Questions Uracil + Ribose, Uridine + Phosphoric acid... 2 Edit Delete
13923 In nucleic acid the bond between the phosphate and hydroxyl group of sugar is 6 603 Recommended Questions Hydrogen bond, Glycosidic bond... 3 Edit Delete
13922 Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by - 6 603 Recommended Questions Base-sugar-OH, Base-sugar-phosphate... 2 Edit Delete
13921 The following diagram depicts the structure of a: 6 603 Recommended Questions Nucleoside, Nucleotide... 2 Edit Delete
13920 Identify the given compound: 6 603 Recommended Questions An amino acid, A purine base... 2 Edit Delete
13919 Which of the following is not a nucleoside? 6 603 Recommended Questions Uridine, Cytidylic acid CMP... 2 Edit Delete
13918 The compound shown below: 6 603 Recommended Questions is a component of the ATP molecule, is most commonly found in ori region of DNA... 1 Edit Delete
13917 The structure given below is of 6 603 Recommended Questions A purine base, Adenosine... 3 Edit Delete
13916 The molecule represented is:- 6 603 Recommended Questions uridine and it is pyrimidine, uridylic acid and it is nucleoside... 4 Edit Delete
13915 Choose the incorrect match. 6 603 Recommended Questions Arachidonic acid - 20C fatty acid including carboxyl carbon, Lecithin - Phospholipid found in cell membrane... 3 Edit Delete
13914 The following diagram shows the molecular structure of: 6 603 Recommended Questions A hexose sugar, An aromatic amino acid... 3 Edit Delete
13913 Which of the following monosaccharide is pentose sugar? 6 603 Recommended Questions Mannose, Ribose... 2 Edit Delete
13912 The elemental composition in human body in descending order is 6 603 Recommended Questions Oxygen - Carbon - Nitrogen - Calcium, Carbon - Oxygen - Nitrogen - Calcium... 1 Edit Delete
13911 When chemical analysis of living tissue was done using trichloroacetic acid, then the filtrate formed was 6 603 Recommended Questions acid insoluble fraction, acid soluble fraction... 2 Edit Delete
13910 Which of the following is incorrect match of the compounds shown? 6 603 Recommended Questions A steroid, deficiency of which causes hypersensitivity to a variety of stimuli and airway obstruction in the lungs of new born., It is found in animals only. It is precursor of hormones such as progesterone, testosterone, estradiol and cortisol.... 1 Edit Delete
13909 Which of the following is not a secondary metabolite? 6 603 Recommended Questions Antibiotics, Vitamins... 2 Edit Delete
13908 The most abundant chemical in living organisms is - 6 603 Recommended Questions Water., Protein.... 1 Edit Delete
13907 A secondary metabolite that is alkaloid in nature is 6 603 Recommended Questions codeine, Anthocyanin... 1 Edit Delete
13906 Which of the following statement is incorrect? 6 603 Recommended Questions The acid insoluble fraction, has only four types of organic compounds, proteins, polysaccharides nucleic acids and lipids, Chemical compounds found in living organisms are of two types, acid soluble and acid insoluble... 3 Edit Delete
13905 The four elements making 99% of living system are: 6 603 Recommended Questions CHOS, CHOP... 3 Edit Delete
13904 Lipids were found to be present in the acid insoluble pool because 6 603 Recommended Questions It forms vesicles on disruption, Vesicles are water insoluble... 4 Edit Delete
13903 Which element is present negligible in human body? 6 603 Recommended Questions O, C... 4 Edit Delete
13902 Which of the following is true about compounds present in acid soluble pool? 6 603 Recommended Questions They have molecular weight ranging from 18 to 800 Daltons, They are called as micromolecules... 4 Edit Delete
13901 256 6 602 Recommended Questions 1, 2... 1 Edit Delete
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13810 The first pair of wings of a cockroach arises from the: 6 602 Recommended Questions Prothorax, Mesothorax... 2 Edit Delete
13809 What is true regarding the morphology of Periplaneta americana? 6 602 Recommended Questions Head is formed by the fusion of 10 segments, Hypopharynx acts as the tongue... 2 Edit Delete
13808 The terga sterna and pleura of cockroach body are joined by 6 602 Recommended Questions cementing glue, muscular tissue... 3 Edit Delete
13807 The male and female cockroaches can be distinguished by their: 6 602 Recommended Questions size, wings... 3 Edit Delete
13806 Male cockroach and female cockroach can be differentiated by: 6 602 Recommended Questions Ocelli, Anal cerci... 3 Edit Delete
13805 Neuroglial cells are associated with: 6 602 Recommended Questions Heart, Kidney... 3 Edit Delete
13804 Which of the following is not a correct statement for neuroglial cell? 6 602 Recommended Questions Neuroglial cells make up more than one half the volume of neural tissue in our body, It protects and supports the neurons... 3 Edit Delete
13803 Nervous tissue is made up of neurons and neuroglial cells. Point out which of the following statement about these two cells is false: I. Neuroglia make up more than one-half the volume of neural tissue in our body II. Neuroglia protect and support neurons III. When a neuron is suitably stimulated, an electrical disturbance is generated which swiftly travels along its cytosol IV. This disturbance at the neuron endings triggers stimulation or inhibition of adjacent neurons or other cells 6 602 Recommended Questions Only I and IV, Only II and III... 3 Edit Delete
13802 Neuroglia makes more than _______ of the volume of neural tissue in our body. 6 602 Recommended Questions 10%, 50%... 2 Edit Delete
13801 Which type of animal tissue changes the diameter of a blood vessel? 6 602 Recommended Questions Epithelium, Connective... 3 Edit Delete
13800 Following is the diagram of different types of muscle tissue. Select the option which is correct identification of muscle tissue and its location. 6 602 Recommended Questions Cardiac muscle in heart, Smooth muscle in wall of blood vessels, Skeletal muscle in arm, Skeletal muscle in arm, Smooth muscle in thigh, Cardiac muscle in heart... 3 Edit Delete
13799 Intercalated disc are a type of 6 602 Recommended Questions Adherent junction., Desmosomes.... 3 Edit Delete
13798 Smooth muscles occur on 6 602 Recommended Questions viscera, internal organs... 4 Edit Delete
13797 Intercalated discs are associated with what type of tissues/muscles? 6 602 Recommended Questions dense regular connective tissue, dense irregular connective tissue... 3 Edit Delete
13796 Which type of tissue is correctly matched with its location? 6 602 Recommended Questions Areolar tissue - Tendons, Transitional epithelium - Tip of nose... 4 Edit Delete
13795 Choose the incorrect match 6 602 Recommended Questions Smooth muscle-intercalated disc, Fibroblast-secretes fibers... 1 Edit Delete
13794 Smooth muscles are 6 602 Recommended Questions involuntary, fusiform, non-striated, voluntary, multinucleate, cylindrical... 1 Edit Delete
13793 Which of the following is a true statement about cardiac muscle cells? 6 602 Recommended Questions They lack an orderly arrangement of actin and myosin filaments, They have less extensive sacroplasmic reticulum and thus contract more slowly than smooth muscle cells... 3 Edit Delete
13792 Intercalated discs are characteristic of muscles found in 6 602 Recommended Questions heart, thigh... 1 Edit Delete
13791 Which of the following is not a feature of Visceral muscles? 6 602 Recommended Questions Located in visceral organs of the body like the alimentary canal, No striations and smooth in appearance... 4 Edit Delete
13790 Which of the following is not a feature of cardiac muscles? 6 602 Recommended Questions Muscles of heart, Muscles assemble in a unbranched pattern... 2 Edit Delete
13789 Skeletal muscle fibres are 6 602 Recommended Questions Branched, spindle-shaped and uninucleated, Striped, multinucleated and unbranched... 2 Edit Delete
13788 What is wrong with respect to skeletal muscles? 6 602 Recommended Questions The striated skeletal muscle fibres are bundled together in a randomly fashion., A sheath of loose connective tissue encloses many bundles of muscle fibres.... 4 Edit Delete
13787 Each muscle is composed of many long, cylindrical fibres arranged in parallel arrays. These fibres are composed of numerous fine fibrils, called: 6 602 Recommended Questions Microfilament, Myofibrils... 2 Edit Delete
13786 The attachment of skeletal muscles to bones and that of one bone to another is due to: 6 602 Recommended Questions Ligaments and tendons, Tendons and ligaments... 2 Edit Delete
13785 Which of the following is not a feature of skeletal muscles? 6 602 Recommended Questions Are associated with skeletal components of the body, Striped appearance... 4 Edit Delete
13784 Which one of the following categories does adipose tissue belong? 6 602 Recommended Questions Epithelial, Connective... 2 Edit Delete
13783 Match the following. Column I A. Adipose tissue B. Stratified epithelium C. Hyaline cartilage D. Fluid connective tissue Column II 1. Nose 2. Blood 3. Skin 4. Fat storage Codes 6 602 Recommended Questions 1 2 3 4, 4 3 1 2... 2 Edit Delete
13782 Which one of the following is not a connective tissue? 6 602 Recommended Questions Bone, Cartilage... 4 Edit Delete
13781 A specialised connective tissue containing chondrocytes can be found at/in 6 602 Recommended Questions Myocardium, Blood vessels... 3 Edit Delete
13780 Cartilage is present A. In the tip of nose and middle ear joints B. Between adjacent bones of vertebral column C. Between adjacent bones of limbs and hands in adults 6 602 Recommended Questions A, B and C, A and B... 3 Edit Delete
13779 Blood is different from other connective tissue because (i) It is mesodermal in origin. (ii) Blood cells do not form the composition of blood plasma or matrix. (iii) It contains different kind of cells performing different function. (iv) It lack fibres. 6 602 Recommended Questions (i), (ii), (iii), (iv), (ii), (iv) only... 2 Edit Delete
13778 See the figures given below and select the mismatch with respect to identification or corresponding feature listed. 6 602 Recommended Questions Voluntary, striated fibres exhibiting structural syncytium., Cell body is rich in Nissl’s granules... 4 Edit Delete
13777 Following is the diagrammatic representation of dense connective tissue, with irregular arrangement of fibres. Mark the option in which this category does not exist? 6 602 Recommended Questions skin, Perichondrium... 3 Edit Delete
13776 Which among the following are incorrect with respect to connective tissue? 6 602 Recommended Questions Tendon is dense regular connective tissue., Bones are rich in collagen fibres.... 4 Edit Delete
13775 Which of the following is incorrect? 6 602 Recommended Questions White adipose tissue - Adipocytes with single large fat droplet, Areolar tissue - Loose connective tissue... 4 Edit Delete
13774 Dense irregular connective tissue with fibroblasts and many fibres (mostly collagen) that are oriented irregularly are found in 6 602 Recommended Questions Tendon, Ligament... 3 Edit Delete
13773 Dense irregular connective tissue has 6 602 Recommended Questions Oriented parallel, Has less fibres... 3 Edit Delete
13772 Given below is the diagrammatic sketch of a certain type of connective tissue. Identify the parts labeled A, B, C, and D and select the right option for them: 6 602 Recommended Questions Part-A: Mast cell, Part-B: Macrophage, Part-C: Fibroblast, Part-D: Collagen fibres, Part-A: Macrophage, Part-B: Collagen fibres, Part-C: Fibroblast, Part-D: Mast cell... 4 Edit Delete
13771 Which among the following has been mismatched? 6 602 Recommended Questions Smooth muscle tissue- wall of blood vessels, Areolar tissue- beneath the skin... 4 Edit Delete
13770 The most abundant and widely distributed tissue in the bodies of complex animals is: 6 602 Recommended Questions Epithelium, Connective... 2 Edit Delete
13769 Which of the following is mismatched? 6 602 Recommended Questions matrix - extracellular material in connective tissue, cardiac muscle cells - uninucleate... 4 Edit Delete
13768 Mark the connective tissue which is without fibres and matrix is not secreted by its cellular component 6 602 Recommended Questions Areolar tissue, Adipose tissue... 3 Edit Delete
13767 Which of the following is an example of loose connective tissues having cells and fibres loosely arranged in a semifluid ground substance and present beneath skin, often serving as support framework for epithelium? 6 602 Recommended Questions Fibrous connective tissue, Areolar connective tissue... 2 Edit Delete
13766 In the given diagram of areolar tissue, identify a phagocytic cell: 6 602 Recommended Questions A, B... 3 Edit Delete
13765 Areolar connective tissue contains (i) Semi-fluid ground substance containing modified polysaccharide. (ii) Fibroblast cells. (iii) Mast cells. (iv) Macrophages. 6 602 Recommended Questions (i), (ii), (iii), (iv), (ii), (iii), (iv) only... 1 Edit Delete
13764 Modified polysaccharides in between cells which act as matrix are secreted by: 6 602 Recommended Questions Blood cells, Elastin... 4 Edit Delete
13763 Areolar tissue contains secretory cells which secrete the fibres and other components of matrix. Such cells are 6 602 Recommended Questions Fibroblasts, Macrophages... 1 Edit Delete
13762 In __i__, the collagen fibres are present in rows between parallel bundles of fibres. It is an example of dense __ii__ connective tissue 6 602 Recommended Questions i-cartilage; ii-regular, i-cartilage; ii-irregular... 4 Edit Delete
13761 Choose the correct option, pairing the principal cell with the tissue 6 602 Recommended Questions Mast cell — Adipose tissue, Fibroblasts — Areolar tissue... 2 Edit Delete
13760 Which of the following structures or substances is incorrectly paired with a tissue? 6 602 Recommended Questions Haversian system—bone, platelets—blood... 3 Edit Delete
13759 Loose connective tissue has cells and fibres loosely arranged in a semifluid ground substance. Which of the following can be taken as an example of it? 6 602 Recommended Questions Areolar tissue, Cartilage... 4 Edit Delete
13758 Identify figure-I and II, structures A and B respectively? Figures are related with specialised connective tissues: 6 602 Recommended Questions Fig. I - Cartilage, Fig. II - Bone, A - Collagen, B - Chondrocyte, Fig. I - Cartilage, Fig. II - Bone, A - Collagen, B - Chondroclast... 1 Edit Delete
13757 Strength, elasticity and flexibility to tissues is provided by the fibres of: 6 602 Recommended Questions Elastin, Adipose tissue... 3 Edit Delete
13756 Select the incorrectly matched pair from the following: 6 602 Recommended Questions Chondrocytes - Smooth muscle cells, Neurons - Nerve cells... 1 Edit Delete
13755 Tendon and ligament are example of 6 602 Recommended Questions dense regular connective tissue, dense irregular connective tissue... 1 Edit Delete
13754 The excess of nutrients which are not used immediately are converted into fats and stored in 6 602 Recommended Questions Areolar tissue, Adipose tissue... 2 Edit Delete
13753 The supportive skeletal structures in the human external ears and in the nose tip are example of: 6 602 Recommended Questions Ligament, Areolar tissue... 4 Edit Delete
13752 Match the following and choose the correct option. Column-I a. Adipose tissue b. Cuboidal epithelium c. Hyaline cartilage d. Blood Column-II i. Fibreless matrix ii. Abundant fat cells iii. Thyroid follicles iv. Tracheal rings 6 602 Recommended Questions a(ii), b(i), c(iv), d(iii), a(ii), b(iii), c(iv), d(i)... 2 Edit Delete
13751 Select the odd one with respect to secretions of exocrine glands. 6 602 Recommended Questions Saliva, Mucus... 3 Edit Delete
13750 The four sketches (A, B, C, and D) given below, represent four different types of animal tissues. Which one of these is correctly identified in the options given, along with its correct location and function? 6 602 Recommended Questions Collagen fibres, Cartilage, Attach skeletal muscles to bones, Smooth muscle tissue, Heart, Heart contraction... 4 Edit Delete
13749 Which among the following statements are correct? (I) Saliva is secreted by exocrine glands. (II) Epithelial tissue rests on non-cellular basement membrane. (III) Muscular tissue possesses cell junctions. (IV) Mucus-secreting goblet cells are multicellular. 6 602 Recommended Questions I and II only, I and IV only... 3 Edit Delete
13748 Goblet cells are specialized cells of the 6 602 Recommended Questions stratified squamous epithelium, cuboidal epithelium... 3 Edit Delete
13747 Which of the following provides structural and functional link between the individual cells in epithelial tissues? 6 602 Recommended Questions Extracellular fluid which binds the various cells in the tissue together, Cell junctions... 2 Edit Delete
13746 Match the columns. Column 'A' (a) Tight junctions (b) Gap junctions (c) Inter digitations (d) Adhering junctions Column 'B' (i) Macula adherens (ii) Stop substances leaking in columnar epithelium (iii) Common in transitional epithelium (iv) Rapid transfer of ions and molecules 6 602 Recommended Questions a i, b ii, c iii, d iv, a ii, b iv, c iii, d i... 2 Edit Delete
13745 Cell junctions like tight, adhering, and gap junctions are mainly present between the neighbouring cells of: 6 602 Recommended Questions Neural tissue, Connective tissue... 4 Edit Delete
13744 Given below is a diagrammatic representation of a glandular tissue. Identify the structure labelled as 'A' and choose the correct option with respect to its example. 6 602 Recommended Questions Gastric gland, Goblet cells... 2 Edit Delete
13743 Endocrine and exocrine glands are formed from what type of tissue? 6 602 Recommended Questions connective, blood... 4 Edit Delete
13742 The function of the gap junction is to? 6 602 Recommended Questions Perform cementing to keep neighbouring cells together, Facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules... 2 Edit Delete
13741 Match the following cell structure with its characteristic feature: Column I (a) Tight junctions (b) Adhering junctions (c) Gap junctions (d) Synaptic junctions Column II (i) Cement neighboring cells together to form a sheet (ii) Transmit information through chemicals to another cell (iii) Establish a barrier to prevent leakage of fluid across epithelial cells (iv) Cytoplasmic channels to facilitate communication between adjacent cells 6 602 Recommended Questions (ii) (iv) (i) (iii), (iv) (ii) (i) (iii)... 3 Edit Delete
13740 Among the options given below, simple epithelium is not found at which location? 6 602 Recommended Questions Air sacs of lungs, PCT... 4 Edit Delete
13739 Mark the incorrect statement regarding compound epithelium: 6 602 Recommended Questions Made up of more than one layer of cells., Vital role in secretion and absorption.... 2 Edit Delete
13738 Which of the following epithelium covers the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and of pancreatic ducts? 6 602 Recommended Questions Pseudostratified epithelium, Simple cuboidal epithelium... 3 Edit Delete
13737 Observe the following figures: Figure A and B indicate glands while Figure C indicates specific type of tissues. Identify these figures: 6 602 Recommended Questions Unicellular gland, Multicellular gland, Compound epithelium, Unicellular gland, Multicellular gland, Pseudostratified epithelium... 1 Edit Delete
13736 Compound epithelium play major role in 6 602 Recommended Questions Secretion, Absorption... 3 Edit Delete
13735 Which of the following epithelium their main function is to provide protection against chemical and mechanical stresses? 6 602 Recommended Questions Simple epithelium., Compound epithelium.... 2 Edit Delete
13734 Compound epithelia is present in - 6 602 Recommended Questions Dry surface of the skin., Moist surface of buccal cavity.... 4 Edit Delete
13733 Columnar epithelium is characterised by the presence of polygonal columns of cells. It occurs in 6 602 Recommended Questions Inner lining of intestine, Inner lining of stomach... 4 Edit Delete
13732 The epithelium that covers the dry surface of skin, the moist surface of buccal cavity, pharynx, inner lining of large ducts of salivary glands and of pancreatic ducts is 6 602 Recommended Questions More stretchable, Involved in formation of a diffusion barrier... 4 Edit Delete
13731 Which one of the following types of cell is involved in making of the inner walls of large blood vessels? 6 602 Recommended Questions Cuboidal epithelium, Columnar epithelium... 3 Edit Delete
13730 Match the following. Column I A. Touch B. Smell C. Cranial nerves D. Medulla oblongata Column II 1. Nasal epithelium 2. Foramen magnum 3. Sensory papillae 4. Peripheral nervous system 6 602 Recommended Questions A-3, B-1, C-2, D-4, A-2, B-1, C-4, D-3... 4 Edit Delete
13729 Which of the following statements is not correct with respect to the epithelial tissue? 6 602 Recommended Questions It covers the external surface of the body and the internal surface of many organs., The neighbouring cells are held together by cell junctions and there is very little intercellular material.... 3 Edit Delete
13728 Which of the following statement is incorrect regarding the tissue lining organs and cavities? 6 602 Recommended Questions They play a role of separating two structures from each other., Cells are compactly packed with large intercellular space or matrix.... 2 Edit Delete
13727 The epithelium composed of single layer of tall and slender cells is found in: 6 602 Recommended Questions Stomach wall, Fallopian tubes... 4 Edit Delete
13726 Brush bordered cuboidal epithelium is present in 6 602 Recommended Questions Proximal convoluted tubules, Small intestine... 1 Edit Delete
13725 The cells of epithelial tissues are ______ packed with ______ intercellular matrix. 6 602 Recommended Questions Loosely, little, Loosely, large... 3 Edit Delete
13724 This epithelial tissue is found in ducts of glands and tubular parts of nephrons in kidneys. Its main functions are secretion and absorption. Choose the correct option 6 602 Recommended Questions simple epithelium, Simple cuboidal epithelium... 2 Edit Delete
13723 Match each item in Column I with one in Column II and select the correct answer from the codes given: 6 602 Recommended Questions A-P, B-Q, C-R, D-S, A-Q, B-P, C-S, D-R... 1 Edit Delete
13722 Which of the following is mismatched? 6 602 Recommended Questions Squamous epithelium: Walls of blood capillaries and alveoli of lungs, Cuboidal epithelium: Tubular part of nephrons... 4 Edit Delete
13721 Match the following Column - I a. Squamous epithelium b. Cuboidal epithelium c. Compound epithelium d. Ciliated epithelium Column - II i) Protection against chemical and mechanical stresses (ii) Movement of particle in a specific direction (iii) Formation of diffusion boundary (iv) Secretion and absorption 6 602 Recommended Questions a(i), b(iv), c(ii), d(iii), a(iii), b(iv), c(i), d(ii)... 2 Edit Delete
13720 Which of the following tissue is correctly matched to its location? 6 602 Recommended Questions Ciliated epithelium - Inner lining of salivary ducts, Glandular epithelium - Moist surface of buccal cavity... 3 Edit Delete
13719 Which of the following characteristics is not correct for squamous epithelium? 6 602 Recommended Questions Made up of a single thin layer of flattened cells., Cells with irregular boundaries.... 3 Edit Delete
13718 The kind of epithelium which forms the inner walls of blood vessels is 6 602 Recommended Questions cuboidal epithelium, columnar epithelium... 4 Edit Delete
13717 The epithelium shown in the following figure is __________. They are mainly present in the inner surface of hollow organs like __________ 6 602 Recommended Questions Ciliated cuboidal, neck of nephron, Ciliated columnar, trachea, loop of Henle... 3 Edit Delete
13716 The air sacs in the lungs are comprised of _____ cells. 6 602 Recommended Questions simple squamous, simple columnar... 1 Edit Delete
13715 The type of epithelial cells which line the inner surface of fallopian tubes, bronchioles and small bronchi are known as: 6 602 Recommended Questions Squamous epithelium, Columnar epithelium... 3 Edit Delete
13714 Select the incorrect statement 6 602 Recommended Questions The columnar epithelium is present in the stomach and intestine, Cilia move the particle in a specific direction... 4 Edit Delete
13713 Which among the following organs possess all the four types of tissue? 6 602 Recommended Questions Skin, Stomach... 3 Edit Delete
13712 According to which of the following properties, the structure of a particular cell varies inside a tissue: 6 602 Recommended Questions Origin of the cell, Nucleus of the cell... 3 Edit Delete
13711 Which of the following statement correctly defines a tissue? 6 602 Recommended Questions A group of cells having different anatomy can perform a specific function., An aggregate of similar cells forming a definite kind of structure performing a specific function.... 2 Edit Delete
13710 Coordination, homeostasis and response to stimuli is the function of 6 602 Recommended Questions Epithelial tissue, Muscular tissue... 4 Edit Delete
13709 What is the association of two or more organs interacting physically or chemically to perform a particular function called as: 6 602 Recommended Questions Tissue-organ system, Organ system... 2 Edit Delete
13708 The complex animals mainly consist of how many types of tissues? 6 602 Recommended Questions Four, Three... 1 Edit Delete
13707 In water, frogs respire through 6 602 Recommended Questions Skin, lungs... 1 Edit Delete
13706 Select the correct route for the passage of sperms in male frogs: 6 602 Recommended Questions Testes → Vasa efferentia → Kidney → Seminal Vesicle → Urinogenital duct → Cloaca, Testes → Vasa efferentia → Bidder's canal → Ureter → Cloaca... 3 Edit Delete
13705 Assertion (A) Bidder canal is associated with the conduction of sperms of frog. Reason (R) These canals are the part of frog’s reproduction system and connect to the cloaca of frog. 6 602 Recommended Questions Both Assertion and Reason are true and Reason is the correct explanation of Assertion, Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion... 3 Edit Delete
13704 Compared to those of humans, the erythrocytes in frogs are: 6 602 Recommended Questions Without nucleus but with haemoglobin, Nucleated and with haemoglobin... 2 Edit Delete
13703 Which of the following animal is correctly matched to their corresponding respiratory organ? 6 602 Recommended Questions Earthworm - Open circulatory system with haemoglobin, Cockroach - Three pairs of spiracles in each thorax... 4 Edit Delete
13702 An animal which contains three-chambered heart is ____________. 6 602 Recommended Questions man, rabbit... 4 Edit Delete
13701 Ventricle of frog contains: 6 602 Recommended Questions oxygenated blood, deoxygenated blood... 4 Edit Delete
13700 Assertion (A): Hibernation during winter and aestivation during summer is seen in frogs. Reason (R): Frogs are poikilotherms. 6 602 Recommended Questions Both A and R are true and R is the correct explanation for A., Both A and R are true both R is not the correct explanation for A.... 1 Edit Delete
13699 Frogs differ from humans in possessing 6 602 Recommended Questions paired cerebral hemispheres, hepatic portal system... 3 Edit Delete
13698 Which of the following statement is incorrect with respect to Rana tigrina? 6 602 Recommended Questions Muscular tongue is bilobed at tip and free from behind, Maxillary teeth are arranged along the margin of upper jaw and lower jaw is toothless... 3 Edit Delete
13697 Find the incorrect match 1. Bufo - Toad 2. Rana - Frog 3. Hyla - Tree frog 4. Rana - Common toad 6 602 Recommended Questions Bufo - Toad, Rana - Frog... 4 Edit Delete
13696 Which structure is not related with respiration in frog? 6 602 Recommended Questions Lungs, Skin... 4 Edit Delete
13695 Choose the correct statement for the digestive system of frog: 6 602 Recommended Questions Oesophagus is very long, Food is captured by the bilobed tongue... 4 Edit Delete
13694 Which of the following act(s) as a respiratory organ in a frog on land? 6 602 Recommended Questions Skin, Buccal cavity... 4 Edit Delete
13693 Forelimbs of frog have: 6 602 Recommended Questions Five digits, Four digits... 2 Edit Delete
13692 Bull frog of India is 6 602 Recommended Questions Rana tigerina, Rana sylvatica... 1 Edit Delete
13691 The outermost layer of the skin of the frog is made of: 6 602 Recommended Questions Stratified squamous keratinized epithelium, Stratified squamous non keratinized epithelium... 3 Edit Delete
13690 Regarding feeding habits: 6 602 Recommended Questions Tadpole is herbivorous and frog is carnivorous, Tadpole is carnivorous and frog is herbivorous... 1 Edit Delete
13689 Frogs are amphibians in the order 6 602 Recommended Questions Apoda, Urodela... 3 Edit Delete
13688 Regarding frog: I. They undergo aestivation and hibernation II. They are carnivorous III. They are poikilotherms 6 602 Recommended Questions I, II, III are correct, I and II are correct... 1 Edit Delete
13687 Regarding frog: I. They undergo aestivation and hibernation II. They are carnivorous III. They are poikilotherms 6 602 Recommended Questions I, II, III are correct, I and II are correct... 1 Edit Delete
13686 Gas exchange between the air and blood stream occurs in three locations in the frog: (1) the skin (2) the lining of the mouth (3) the lungs 6 602 Recommended Questions (1) and (2), (1) and (3)... 4 Edit Delete
13685 Regarding respiration in frogs: I. The skin of a frog is permeable to oxygen and carbon dioxide, as well as to water. II. When a frog is underwater, oxygen is transmitted through the skin directly into the bloodstream. III. On land, adult frogs use their lungs to breathe. The correct statements are: 6 602 Recommended Questions I, II, III, I and II... 1 Edit Delete
13684 In the given diagram of the heart of frog identify X: 6 602 Recommended Questions Conus arteriosus, Left atrium... 1 Edit Delete
13683 In frog: 6 602 Recommended Questions Hemoglobin is present in red blood corpuscles which are biconvex and nucleated., Hemoglobin is present in red blood corpuscles which are biconcave and nucleated.... 1 Edit Delete
13682 Male and female frogs are distinguishable externally only during breeding season when: 6 602 Recommended Questions the female develops nuptial pad in the thumb, the male develops nuptial pad in the thumb... 2 Edit Delete
13681 Regarding skin of the frog, incorrect statement is: 6 602 Recommended Questions It is made of the epidermis and the dermis, Mucous glands are present in the dermis and open at the surface... 4 Edit Delete
13680 In frogs: 6 602 Recommended Questions The dentition is homodont and the upper jaw is toothless., The dentition is heterodont and the upper jaw is toothless.... 3 Edit Delete
13679 There are _________ pairs of cranial nerves in frog. 6 602 Recommended Questions 8, 10... 2 Edit Delete
13678 Consider the following parts of the brain of frog: I. Olfactory lobes II. Optic lobes III. Cerebral hemispheres IV. Diencephalon Forebrain includes: 6 602 Recommended Questions I, II, III, IV, I, II, III... 3 Edit Delete
13677 The hindbrain of the frog consists of which of the following? 6 602 Recommended Questions Option 1, Option 2... 4 Edit Delete
13676 The skull of frog is: 6 602 Recommended Questions Acondylic, Monocondylic... 3 Edit Delete
13675 In frog, a thin walled urinary bladder is present ________ to the rectum and opens in the ________ 6 602 Recommended Questions Ventral, cloaca, Dorsal, cloaca... 1 Edit Delete
13674 Regarding reproductive system of a male frog: I. Testes are adhered to the upper part of the kidneys by a double fold of peritoneum called mesorchium. II. Vasa efferentia are 50 to 60 in number and enter kidneys on their side III. Vasa efferentia open into the bidder's canal which finally communicates with urogenital duct. 6 602 Recommended Questions I, II, III are correct, I and II are correct... 3 Edit Delete
13673 Identify the incorrect statement amongst the following: 6 602 Recommended Questions There is no functional connection of ovaries with kidneys in female frog., In male frog, the ureter arises as urogenital duct and opens into the cloaca.... 4 Edit Delete
13672 The following diagram shows the male reproductive system of a frog. A, B, C, D and E are respectively: 6 602 Recommended Questions Fat body, Testes, Kidney, Cloaca, Urinary bladder, Fat body, Testes, Kidney, Urinary bladder, Cloaca... 2 Edit Delete
13671 Given below is the diagram of female reproductive system of a frog marked with A, B, C, D, E and F. Ovary is represented by: 6 602 Recommended Questions A, B... 3 Edit Delete
13670 Mucus helps a frog in forming 6 602 Recommended Questions Thick skin, Dry skin... 4 Edit Delete
13669 Haemoglobin is dissolved in blood plasma of 6 602 Recommended Questions Frog, Rabbit... 1 Edit Delete
13668 The biological adaptation that allows frogs to obtain water for their survival during conditions of water scarcity is the 6 602 Recommended Questions presence of a modified tongue that acts like a sponge to suck water from damp soils., presence of water channels in the skin by which they absorb water from their surroundings.... 2 Edit Delete
13667 Bidder's canals is/are present in 6 602 Recommended Questions Male frog, Both male and female frog... 1 Edit Delete
13666 Internal fertilization is not seen in 6 602 Recommended Questions Birds, Reptiles... 3 Edit Delete
13665 Select the incorrect match with respect to animals and the type of nitrogenous waste excreted by them 6 602 Recommended Questions Rana - Uricotelic, Pheretima - Ureotelic... 1 Edit Delete
13664 In frogs, cloaca receives 6 602 Recommended Questions Faecal matter, Gametes... 4 Edit Delete
13663 In a frog, heart is enclosed within a two-layered sac called 6 602 Recommended Questions Mesorchium, Pericardium... 2 Edit Delete
13662 Frogs can protect itself from enemies by 6 602 Recommended Questions Clawed toes, Spiny skin... 3 Edit Delete
13661 Which of the following is incorrect statement about frog? 6 602 Recommended Questions Body is divisible into head and trunk, The skin is moist without scales... 4 Edit Delete
13660 In frog, oxygen dissolved in water can be taken by 6 602 Recommended Questions External nares, Spiracles... 4 Edit Delete
13659 A thin-walled, triangular chamber attached dorsally to heart of a frog is known as 6 602 Recommended Questions Truncus arteriosus, Sinus venosus... 2 Edit Delete
13658 Adult frog (Rana tigrina) cannot respire through 6 602 Recommended Questions Moist skin, Lungs... 3 Edit Delete
13657 Which of the following structure acts as urinogenital duct in male frogs? 6 602 Recommended Questions Urethra, Ureter... 2 Edit Delete
13656 A male frog can be distinguished externally from a female frog by all of the following features except 6 602 Recommended Questions a, b, c and d, a and b only... 4 Edit Delete
13655 On land, a frog respires by 6 602 Recommended Questions Skin only, Skin and buccal cavity only... 3 Edit Delete
13654 Which of the following statement is incorrect regarding a frog? 6 602 Recommended Questions Digestive system without salivary gland, Respiratory system without intercostal muscles... 4 Edit Delete
13653 Match each item in Column I with one in Column II and select the correct match from the codes given: Column I A. Copulatory pad in male frog B. In hibernation, frog respires C. Optic lobes in a frog are a part of D. Bidder’s canal Column II P. Present on 1st digit of forelimbs Q. Present on 1st digit of hind limbs R. Through skin S. Through lungs T. Fore brain U. Mid brain W. Present in female frog’s kidney for the passage of ova X. Present in male frog’s kidney for the passage of sperms 6 602 Recommended Questions P R X W, P R U X... 2 Edit Delete
13652 Regarding frogs: Statement I: They have the ability to change the colour to hide them from their enemies (camouflage). Statement II: They undergo summer sleep called as hibernation as well as winter sleep called as aestivation. 6 602 Recommended Questions Only Statement II is correct, Only Statement I is correct... 2 Edit Delete
13651 Assertion (A): The alimentary canal of a frog is short. Reason (R): Frog is carnivorous. 6 602 Recommended Questions Both (A) and (R) are true and (R) is the correct explanation of (A)., Both (A) and (R) are true but (R) is not the correct explanation of (A).... 1 Edit Delete
13650 Dry, cornified skin along with epidermal scales or scutes is found in 6 602 Recommended Questions Tortoise, Hyla... 1 Edit Delete
13649 The common name of Calotes versicolor is 6 602 Recommended Questions Garden lizard, Tree lizard... 1 Edit Delete
13648 The animal which is a poikilotherm is 6 602 Recommended Questions Aptenodytes, Pteropus... 3 Edit Delete
13647 Limbs are present in 6 602 Recommended Questions Osteichthyes, Chondrichthyes... 3 Edit Delete
13646 A poikilotherm having four-chambered heart is 6 602 Recommended Questions Columba, Chameleon... 3 Edit Delete
13645 In which of the following sets of organisms, does the external fertilization occur? 6 601 Recommended Questions Echinodermata and mosses, Hemichordata and ferns... 3 Edit Delete
13644 In which one of the following, the genus name, its two characters and its class/phylum are correctly matched? 6 601 Recommended Questions Salamandra: (i) A tympanum represents ear, (ii) Fertilization is external - Amphibia, Pteropus: (i) Skin possesses hair, (ii) Oviparous - Mammalia... 1 Edit Delete
13643 In Amphibia: I. Skin is moist without scales II. A tympanum represents the ear III. Fertilization is external 1. Only I and II are correct. 2. Only I and III are correct. 3. Only II and III are correct. 4. I, II, and III are correct. 6 601 Recommended Questions Only I and II are correct., Only I and III are correct.... 4 Edit Delete
13642 Which of the following represent the correct combination without any exception? 6 601 Recommended Questions Mammary gland; hair on body; pinnae; two pairs of limbs - Mammalia, Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord - Chondrichthyes... 2 Edit Delete
13641 Bony endoskeleton is present in (i) Pristis (ii) Hippocampus (iii) Ichthyophis (iv) Myxine 6 601 Recommended Questions (i), (ii), (iii), (iv), (ii), (iii) only... 2 Edit Delete
13640 What will you look to identify the sex of the following? 6 601 Recommended Questions Male frog – a copulatory pad on the first digit of the hind limb, Female cockroach – anal cerci... 3 Edit Delete
13639 Read the following statements: A. Mouth is located ventrally. B. Notochord is persistent throughout life. C. Gill slits are separate and with operculum. D. Air bladder are absent. How many of the above statements are correct for given figure: 6 601 Recommended Questions Four., Three.... 2 Edit Delete
13638 Match each item in Column I with one item in Column II and choose your answer from the codes given below. Column I I. Placoid Scales II. Ctenoid scales III. Ectoparasites IV. Proboscis gland Column II 1. Chondrichthyes 2. Osteichthyes 3. Hemichordata 4. Cyclostomata Codes: I II III IV 6 601 Recommended Questions 1 2 3 4, 2 1 4 3... 4 Edit Delete
13637 Buoyancy in a bony fish is maintained with the help of 6 601 Recommended Questions streamlined body, paired fins... 3 Edit Delete
13636 Select the correct option in respect of characteristics of each group: Cyclostomes (i) Marine (ii) Sucking mouth (iii) 6-15 Pairs of Gills (iv) Placoid scales Chondrichthyes (i) Marine, Fresh water (ii) Ventral mouth (iii) 5-7 Pairs of Gills (iv) Cycloid Scales Osteichthyes (i) Marine (ii) Terminal mouth (iii) 4 Pairs of Gills (iv) Ctenoid/Ganoid 6 601 Recommended Questions (i), (ii) are correct., (i), (iii), (iv) are correct.... 3 Edit Delete
13635 Consider the following characters: I. Air bladder II. Operculum III. Viviparity The characters present in bony fishes include: 6 601 Recommended Questions I, II and III, I and III only... 3 Edit Delete
13634 All cyclostomes are __________ on some fishes; paired fins are ________, cranium is _______ and circulation is ______ type. 6 601 Recommended Questions Ectoparasites, Absent, Cartilaginous, Open, Endoparasites, Present, Bony, Closed... 3 Edit Delete
13633 The feature lacking in bony fishes would be: 6 601 Recommended Questions Operculum, Swim bladder... 4 Edit Delete
13632 Which of the following is a fish? 6 601 Recommended Questions Flying fish, Jelly fish... 1 Edit Delete
13631 Operculum and an air bladder are present in: 6 601 Recommended Questions Clarias, Pristis... 1 Edit Delete
13630 A marine cartilaginous fish that can produce electric current is 6 601 Recommended Questions Pristis, Torpedo... 2 Edit Delete
13629 Which of the following characteristic features always holds true for the corresponding group of animals? 6 601 Recommended Questions Viviparous - Mammalia, Possess a mouth with an upper and a lower jaw - Chordata... 4 Edit Delete
13628 In males pelvic fins bear claspers in 6 601 Recommended Questions Carcharodon, Pterophyllum... 1 Edit Delete
13627 Which of the following statement/s about chondrichthyes are incorrect? 1) Notochord is persistent throughout life 2) Endoskeleton is made up of bones 3) Operculum present 4) Skin is covered by placoid scales 6 601 Recommended Questions All of the above, None of the above... 4 Edit Delete
13626 Choose the incorrect match with respect to animal, phylum and two features 6 601 Recommended Questions Clarias - Chordata - Placoid scales, Operculum, Antedon - Echinodermata - Water vascular system, Radial symmetry... 1 Edit Delete
13625 Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception? 6 601 Recommended Questions Chordata - possess a mouth provided with an upper and a lower jaw, Chondrichthyes - possess cartilaginous endoskeleton... 2 Edit Delete
13624 Select the incorrect option with respect to animal listed in column A and features exhibited in column B 6 601 Recommended Questions Psittacula - Homeothermy, Air sacs to supplement respiration, Panthera tigris - Viviparity, Thecodont dentition... 4 Edit Delete
13623 Match the following: (a) Exocoetus (i) Rohu (b) Pterophyllum (ii) Fighting fish (c) Betta (iii) flying fish (d) Labeo (iv) Angel fish 6 601 Recommended Questions (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv), (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)... 3 Edit Delete
13622 In which of these examples are the members exclusively chondrichthyes 6 601 Recommended Questions Scoliodon, Pristis, Labeo, Betta, Scoliodon, Pristis, Betta, Trygon... 3 Edit Delete
13621 Which of the following animal has a bony endoskeleton? 6 601 Recommended Questions Exocoetus, Clarias... 4 Edit Delete
13620 Match the organism in Column-I with its excretory structure in Column-II Column-I (A) Cockroach (B) Earthworm (C) Balanoglossus (D) Clarias Column-II (p) Nephridia (q) Proboscis gland (r) Kidney (s) Malpighian tubules 6 601 Recommended Questions (A)→(s),(B)→(p),(C)→(q),(D)→(r), (A)→(s),(B)→(p),(C)→(r),(D)→(q)... 1 Edit Delete
13619 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I Feature (a) Lateral line system (b) Water vascular system (c) Radula (d) Comb plates (e) Parapodia Column II Phylum (i) Ctenophora (ii) Mollusca (iii) Echinodermata (iv) Osteichthyes (v) Annelida 6 601 Recommended Questions (i) (ii) (iii) (iv) (v), (iv) (iii) (ii) (i) (v)... 2 Edit Delete
13618 A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is 6 601 Recommended Questions Eptatretus, Myxine... 4 Edit Delete
13617 Choose the correct statements. 6 601 Recommended Questions All mammals are viviparous, All cyclostomes do not possess jaws and paired fins... 2 Edit Delete
13616 Which of the following statement is incorrect with respect to vertebrates? 6 601 Recommended Questions Vertebrates possess notochord during the embryonic period, Notochord is replaced by a cartilaginous or bony vertebral column in the adult... 4 Edit Delete
13615 Which one of the following pairs of animal comprises 'jawless fishes'? 6 601 Recommended Questions Lampreys and eels, Mackerels and rohu... 3 Edit Delete
13614 Which of the following does not come under the Class Mammals? 6 601 Recommended Questions Flying fox, Hedgehog... 4 Edit Delete
13613 Consider the following statements: Chordates- I. Possess a solid, single and ventral nerve cord II. Have pharyngeal gill slits at some point during their development. III. Have post-anal tail Which of the above statements are true? 6 601 Recommended Questions I and II only, I and III only... 3 Edit Delete
13612 Identify the incorrectly matched pair: 6 601 Recommended Questions Balanoglossus and Pinctada - Open circulatory system, Branchiostoma and Ascidia - Persistent notochord... 2 Edit Delete
13611 Identify the chordates in which the notochord persists in the adult? 6 601 Recommended Questions Tunicates, Lancelets... 2 Edit Delete
13610 Similarity between protochordata and hemichordata is 6 601 Recommended Questions Presence of notochord., Exclusively marine.... 2 Edit Delete
13609 The presence of notochord in the larval tail is a characteristic of 6 601 Recommended Questions Doliolum, Branchiostoma... 1 Edit Delete
13608 False statement with respect to Ascidia is 6 601 Recommended Questions Present exclusively in marine water, It is a urochordate and notochord is present only in larval tail... 3 Edit Delete
13607 Identify the option where all the columns are not correctly matched: 6 601 Recommended Questions Pleurobrachia - Ctenophora - Comb plates, Only sexual reproduction, Loligo - Mollusca - Radula, Dioecious... 4 Edit Delete
13606 The character that gives the Phylum Chordata is shown by: 6 601 Recommended Questions A, B... 2 Edit Delete
13605 All vertebrates are chordates but all chordates are not vertebrates, why? 6 601 Recommended Questions Notochord is replaced by a vertebral column in the adults of some chordates., The ventral hollow nerve cord remains throughout life in some chordates.... 1 Edit Delete
13604 Which of the following would be a characteristic of the animal shown in the given diagram? 6 601 Recommended Questions Excretory organ is the proboscis gland., They migrate for spawning to fresh water.... 3 Edit Delete
13603 Which one of the following is correctly matched with its one characteristic and the taxon? 6 601 Recommended Questions Millipede - Ventral nerve cord - Arachnida, Duckbill platypus - Oviparous - Mammalia... 2 Edit Delete
13602 Which of the following is not an excretory structure found in invertebrates? 6 601 Recommended Questions Flame cells, Malpighian tubules... 4 Edit Delete
13601 Select the correct statement about class-Aves 6 601 Recommended Questions They are warm blooded (homoiothermous) animals and are able to maintain a constant body temperature, Respiration occurs through lungs and air sacs connected to lungs for supplement respiration... 4 Edit Delete
13600 Which of the following is not seen in hemichordates? 6 601 Recommended Questions A tripartite body organization, Stomochord... 3 Edit Delete
13599 In which of the following animals, the body is cylindrical and is composed of an anterior proboscis, a collar, and a long trunk? 6 601 Recommended Questions Hemichordates, Urochordates... 1 Edit Delete
13598 Which of the following set of animals belong the phylum hemichordate? 6 601 Recommended Questions Balanoglossus, Saccoglossus, Salpa, Doliolum... 1 Edit Delete
13597 Consider the following statements: I. Platyhelminths are acoelomates and use protonephridia as excretory structures. II. Aschelminthes are pseudocoelomates and have bilateral symmetry. III. Adult echinoderms show radial symmetry and exhibit deuterostome type embryonic development. Which of the above statements are true? 6 601 Recommended Questions I and II only, I and III only... 4 Edit Delete
13596 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I (animal) Column II (phylum) I. Loligo 1. Mollusca II. Ophiura 2. Echinodermata III. Beroe 3. Cnidaria IV. Adamsia 4. Ctenophora Codes: I II III IV 1. 1 2 3 4 2. 2 1 4 3 3. 2 1 3 4 4. 1 2 4 3 6 601 Recommended Questions 1 2 3 4, 2 1 4 3... 4 Edit Delete
13595 Match the column I with column II and choose the correct option. 6 601 Recommended Questions 2 3 5 4 1, 2 5 3 4 1... 3 Edit Delete
13594 Mark the correct match with the group and its characteristic? 1. Arthropoda → Compound eye and wings. 2. Mammalia → Viviparity. 3. Echinodermata → Calcareous endoskeleton. 4. Annelida → Fresh water and segmented body. 6 601 Recommended Questions Arthropoda → Compound eye and wings., Mammalia → Viviparity.... 3 Edit Delete
13593 Which of the following structure is associated with locomotion? (i) Parapodia. (ii) Water vascular system. (iii) Radula. (iv) Proboscis. 6 601 Recommended Questions (i), (ii), (iii), (iv), (i) only... 3 Edit Delete
13592 Echinoderms are not characterized by: 6 601 Recommended Questions An absence of excretory system, Bisexual animals... 2 Edit Delete
13591 How many of the characters given below are true for echinoderms? I. An endoskeleton of calcareous ossicles II. The adult echinoderms are radially symmetrical but larvae are bilaterally symmetrical. III. They are triploblastic and coelomate animals. IV. Digestive system is complete. V. Water vascular system VI. Sexual reproduction, internal fertilization, and direct development. 6 601 Recommended Questions 3, 4... 3 Edit Delete
13590 Which of the following phyla is not correctly matched to its general characters? 6 601 Recommended Questions Porifera - Primitive multicellular animals which have intracellular digestion, internal fertilization and indirect development, Ctenophora - Exclusively marine, radially symmetrical, diploblastic have comb plates and colloblast cells... 3 Edit Delete
13589 Select the group of animals belonging to different phyla? 6 601 Recommended Questions Hirudinaria, Limulus, Laccifer., Nereis, Dentalium, Aplysia.... 3 Edit Delete
13588 The most distinctive feature of echinoderms is the presence of a water vascular system which helps in (A) Locomotion (B) Excretion (C) Respiration (D) Reproduction 6 601 Recommended Questions (A) only, (B) & (C) only... 3 Edit Delete
13587 The most distinctive feature of echinoderms is the presence of a water vascular system which helps in (A) Locomotion (B) Excretion (C) Respiration (D) Reproduction 6 601 Recommended Questions (A) only, (B) & (C) only... 3 Edit Delete
13586 Vertebrates and seastars may seen as different as two animal groups can be, yet they share 1. The same type of body symmetry as adults. 2. A high degree of cephalization. 3. Certain developmental pattern, including the type of coelom formation. 4. The presence of endoskeleton that include cranium 6 601 Recommended Questions The same type of body symmetry as adults., A high degree of cephalization.... 3 Edit Delete
13585 Animals without excretory system, separate sexes, and calcareous endoskeleton are applicable for 6 601 Recommended Questions Chaetopeura, Ophiura... 2 Edit Delete
13584 Which of these is not a coelenterate? 6 601 Recommended Questions Sea pen, Sea fur... 4 Edit Delete
13583 Excretory system is absent, sexes are separate, fertilization is usually external this is correct for: 6 601 Recommended Questions Option 1, Option 2... 1 Edit Delete
13582 Find out the correct match from the following table: Column-I Column-II Column-III (i) Radula Rasping organ Pila (ii) Hooks and suckers Taenia Annelida (iii) Tube feet Asterias; Dentalium Echinodermata (iv) Comb plates Pleurobrachia; Aurelia Ctenophora 6 601 Recommended Questions (i) only, (i) and (ii)... 1 Edit Delete
13581 Which of the following is not an annelid? 6 601 Recommended Questions Leech, Earthworm... 4 Edit Delete
13580 Match column I and column II with respect to animal and its common name 6 601 Recommended Questions (i) → (a), (ii) → (b), (iii) → (c), (iv) → (d), (i) → (d), (ii) → (b), (iii) → (a), (iv) → (c)... 4 Edit Delete
13579 Endoskeleton of calcareous ossicles, external fertilization, adults shows radial symmetry, development indirect. The above-given feature is true for: 6 601 Recommended Questions Echinus, Asterias, Pila, ophiura... 1 Edit Delete
13578 In which of the following animals the adults have pentamerous radial symmetry while their larvae are bilaterally symmetrical? 6 601 Recommended Questions Arthropods, Molluscs... 3 Edit Delete
13577 A land snail, a clam, and an octopus all share 6 601 Recommended Questions a mantle, calcareous shell... 1 Edit Delete
13576 Which one of the following phyla is correctly matched with its two general characteristics? 6 601 Recommended Questions Arthropoda – Body divided into head, thorax and abdomen and respiration by mouth, Chordata – Notochord at early stage only and separate anal and urinary openings to the outside... 4 Edit Delete
13575 Which of the following option is correct? 6 601 Recommended Questions Fertilization is internal and development is indirect in Scypha, Pleurobrachia, Flame cells help in osmoregulation and alimentary canal present in Fasciola, Taenia... 4 Edit Delete
13574 Which one of the following is a matching set of a phylum and its three examples? 6 601 Recommended Questions Cnidaria – Bonellia, Physalia, Aurelia, Platyhelminthes – Planaria, Schistosoma, Enterobius... 3 Edit Delete
13573 Which one of the following pairs is mismatched? 6 601 Recommended Questions Pila globosa - pearl, Apis indica - honey... 1 Edit Delete
13572 In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct? 6 601 Recommended Questions Pila (i) Body segmented (ii) Mouth with Radula Mollusca, Asterias (i) Spiny skinned (ii) Water vascular system Echinodermata... 1 Edit Delete
13571 Consider the following sets of some animals. The set that consists of all animals belonging to the same phylum is: 6 601 Recommended Questions Pinctada, Aplysia, Chaetopleura, Dentallium, Pila, Echinus... 1 Edit Delete
13570 Which of the following is called pearl oyster? 6 601 Recommended Questions Dentalium, Pinctada... 2 Edit Delete
13569 The largest and the second largest phylum of the animal kingdom are 6 601 Recommended Questions Arthropoda and Echinodermata, Echinodermata and Mollusca... 4 Edit Delete
13568 Presence of radula and feather like gills are the characteristic features of 6 601 Recommended Questions Pila, Delphinus... 1 Edit Delete
13567 Which one of the following statements is incorrect? 1. In cockroaches and prawns, excretion of waste material occurs through Malpighian tubules. 2. In ctenophores, locomotion is mediated by comb plates. 3. In Fasciola, flame cells take part in excretion. 4. Earthworms are hermaphrodites and yet cross-fertilization takes place among them. 6 601 Recommended Questions In cockroaches and prawns, excretion of waste material occurs through Malpighian tubules., In ctenophores, locomotion is mediated by comb plates.... 1 Edit Delete
13566 What is true about Nereis, scorpion, cockroach and silver fish? 6 601 Recommended Questions They all possess dorsal heart, None of them is aquatic... 1 Edit Delete
13565 Which of the following is not an arthropod characteristic? 6 601 Recommended Questions Jointed appendages, Non-segmented bodies... 2 Edit Delete
13564 Which of the following features is not present in the phylum – Arthropoda? 6 601 Recommended Questions Metameric segmentation, Parapodia... 2 Edit Delete
13563 Select the option that correctly matches characteristic features with the group of three animals. 6 601 Recommended Questions Skeleton of spicules – Sycon, Adamsia, Spongilla, Excretion by flame – Taenia, Fasciola, Ancylostoma... 4 Edit Delete
13562 Match each item in Column I with one item in Column II regarding and choose your answer from the codes given below: Column I (organism) I. Nereis II. Prawn III. Earthworm IV. Cockroach Column II (respiratory organ) 1. Gills 2. Parapodia 3. Skin 4. Trachea I II III IV 1. 1 2 3 4 2. 2 1 4 3 3. 2 1 3 4 4. 1 2 4 3 6 601 Recommended Questions 1 2 3 4, 2 1 4 3... 3 Edit Delete
13561 Which one of the following features is common in silverfish, scorpion, dragonfly and prawn? 6 601 Recommended Questions Two pairs of legs and segmented body, Living chitinous cuticle and two pairs of antennae... 3 Edit Delete
13560 Chitin is a polysaccharide found in the exoskeleton of 6 601 Recommended Questions prawn, insects... 4 Edit Delete
13559 Which of the group of animals is triploblastic, coelomate and bilateral? 6 601 Recommended Questions Aschelminthes, Porifera... 3 Edit Delete
13558 Which of the following is the member of the largest phylum 6 601 Recommended Questions Hookworm, Pinworm... 4 Edit Delete
13557 Chitinous exoskeleton is present in 6 601 Recommended Questions Mollusca, Echinodermata... 3 Edit Delete
13556 Match Column - I with Column - II and choose the correct option Column - I a. A vector of disease b. A gregarious pest c. A living fossil d. An economically important Column - II i. Bombyx ii. Limulus iii. Locusta iv. Culex insect 6 601 Recommended Questions a(iii), b(ii), c(i), d(iv), a(i), b(ii), c(iii), d(iv)... 4 Edit Delete
13555 From the given statements which of the following statement(s) is/are incorrect for Annelida? a. Pseudometameric segmentation present b. Coelomic fluid acts as a hydrostatic skeleton c. They possess longitudinal and circular muscles which help in locomotion d. Neural system consists of paired ganglia connected by lateral nerves to a single ventral nerve chord 6 601 Recommended Questions a & b only, b & c only... 4 Edit Delete
13554 Annelids do not represent:- 6 601 Recommended Questions Circumpharyngeal nerve ring, Longitudinal muscles in the gut... 4 Edit Delete
13553 In the given table, some organisms are classified into categories. However, there is one exception. Select the option with correctly mentioned exceptional organism. 6 601 Recommended Questions Mucor, Cacti... 3 Edit Delete
13552 Which one of the following is not a characteristic of phylum-Annelida? 6 601 Recommended Questions Closed circulatory system, Segmentation... 3 Edit Delete
13551 Which of the following animals exhibit all these characters – bilateral symmetry, triploblastic, segmented and eucoelomate? 6 601 Recommended Questions Echinoderms, Roundworms... 4 Edit Delete
13550 See the following diagrams carefully and these animals are 6 601 Recommended Questions Sycon, Leucosolenia, Hydra, Aurelia... 3 Edit Delete
13549 How many of the followings belong to Nematodes Roundworm, Filarial worm, Hookworm, Pinworm, Tapeworm, Ringworm, Earthworm, 6 601 Recommended Questions 1.7, 2.5... 4 Edit Delete
13548 Which of the following is not true for Roundworms 6 601 Recommended Questions Complete alimentary canal, Well developed muscular pharynx... 3 Edit Delete
13547 Which of the following is true for given diagram 6 601 Recommended Questions Male roundworm, Female roundworm... 4 Edit Delete
13546 A phylum which are multicellular, having Bilateral symmetry and with false coelom is 6 601 Recommended Questions Platyhelminthes, Aschelminthes... 4 Edit Delete
13545 Which of the following is dioecious? 6 601 Recommended Questions Taenia, Fasciola... 3 Edit Delete
13544 Pinworm, Hookworm and Filaria worm belong to: 6 601 Recommended Questions Annelida, Platyhelminthes... 3 Edit Delete
13543 Pseudocoelomate among the following is 6 601 Recommended Questions Ancylostoma, Nereis... 1 Edit Delete
13542 Which of the following is correct statement 6 601 Recommended Questions Digestive system is incomplete in Flatworms but complete in Roundworms, Digestive system is complete in Flatworms but incomplete in Roundworms... 1 Edit Delete
13541 Ancylostoma is also known as 6 601 Recommended Questions Pinworm, Hookworm... 2 Edit Delete
13540 Digestive system consists of a mouth and anus in which animals 6 601 Recommended Questions Ancylostoma, Wuchereria... 4 Edit Delete
13539 Which one of the following statements about certain given animals is correct? 6 601 Recommended Questions Round worms (Aschelminthes) are pseudocoelomates, Molluscs are acoelomates... 1 Edit Delete
13538 Which one of the following groups of animals is bilaterally symmetrical and triploblastic? 6 601 Recommended Questions Coelenterates (cnidarians), Aschelminthes (round worms)... 2 Edit Delete
13537 Which is correct regarding Roundworms 6 601 Recommended Questions Females are longer than males, Males are longer than females... 1 Edit Delete
13536 Which is true for roundworms? 6 601 Recommended Questions Organ-system level of body organisation, Tube within tube plan... 4 Edit Delete
13535 Consider the following statements: I. The members of Phylum Porifera are exclusively marine. II. Ctenophores are the largest animals that use cilia for locomotion. III. Roundworms may be free-living or parasitic in plants and animals. Which of the above statements are true? 6 601 Recommended Questions I and II only, I and III only... 3 Edit Delete
13534 Which one of the following statements is incorrect? 6 601 Recommended Questions Mesoglea is present in between ectoderm and endoderm in Obelia, Asterias exhibits radial symmetry... 3 Edit Delete
13533 Which of the following is not true about Flatworms 6 601 Recommended Questions Fertilisation is internal, Indirect development... 4 Edit Delete
13532 The phylum with exclusively marine animals is: 6 601 Recommended Questions Porifera, Cnidaria... 3 Edit Delete
13531 Which is not true for Ctenophora 6 601 Recommended Questions Mesoglea is absent, Bilateral symmetry... 4 Edit Delete
13530 Ctenophora is an exclusively marine phylum, the other such phylum is 6 601 Recommended Questions Mollusca, Echinodermata... 2 Edit Delete
13529 Which of the following is well marked in Ctenophores? 6 601 Recommended Questions Comb plates, Tentacles... 3 Edit Delete
13528 One example of animals having a single opening to the outside that serves both as mouth and as anus is 6 601 Recommended Questions Octopus, Asterias... 4 Edit Delete
13527 In contrast to Annelids, the Platyhelminths show: 6 601 Recommended Questions Absence of body cavity, Presence of pseudocoel... 1 Edit Delete
13526 A phylum which are multicellular, having Bilateral symmetry and without body cavity is 6 601 Recommended Questions Platyhelminthes, Aschelminthes... 1 Edit Delete
13525 Choose the correct statement 6 601 Recommended Questions All members of phylum echinodermata are marine and parasitic, Bioluminescence is well marked in cnidarians... 4 Edit Delete
13524 Development involves an indirect or larval form in which of the following? 6 601 Recommended Questions Pleurobrachia, Euspongia... 3 Edit Delete
13523 Some salient features and phyla of organisms are given below. Select the option which shows the correct combination of organism, its phylum and salient features. 6 601 Recommended Questions Hydra Coelenterata Bilateral symmetry Cnidoblasts present, Planaria Platyhelminthes Bilateral symmetry High regeneration capacity... 2 Edit Delete
13522 Hermaphroditism is found in which phyla? 6 601 Recommended Questions Ctenophora, Platyhelminthes... 4 Edit Delete
13521 Radial symmetry is seen in 6 601 Recommended Questions Mollusca, Chordata... 4 Edit Delete
13520 In Planaria, waste material of food digestion and Nitrogenous waste material removed from 6 601 Recommended Questions Mouth and mouth, Body wall and body wall... 3 Edit Delete
13519 Which one of the following kinds of animals are triploblastic? 6 601 Recommended Questions Flat worms, Sponges... 1 Edit Delete
13518 Pleurobrachia is 6 601 Recommended Questions Hermaphrodite, Dioecious... 4 Edit Delete
13517 Presence of flame cells is a characteristic feature of 6 601 Recommended Questions Nereis, Taenia... 2 Edit Delete
13516 Hooks and Suckers are present in 6 601 Recommended Questions All Flatworms, Parasitic flatworms... 2 Edit Delete
13515 Which of the following is true about digestion of Ctenophores? 6 601 Recommended Questions Extracellular digestion, Intracellular digestion... 3 Edit Delete
13514 Which of the following attribute started from Platyhelminthes 6 601 Recommended Questions Organ level of organisation, Coelom... 1 Edit Delete
13513 Ctenophores are commonly known as 6 601 Recommended Questions Sea walnuts, Comb jellies... 4 Edit Delete
13512 Ctenophorans are commonly referred to as 6 601 Recommended Questions Flatworms, Comb jellies... 2 Edit Delete
13511 Which of the following animal has a diploblastic level of organisation? 6 601 Recommended Questions sponges, Adamsia... 4 Edit Delete
13510 The function of flame cells are 6 601 Recommended Questions Digestion and excretion, Attachment and osmoregulation... 4 Edit Delete
13509 Match the following cells/structures with their phyla of origin 1) Flame cells (i) Coelenterata 2) Choanocytes (ii) Platyhelminthes 3) Cnidocytes (iii) Ctenophora 4) Comb plates (iv) Porifera 6 601 Recommended Questions 1-(i), 2-(iv), 3-(ii), 4-(iii), 1-(iii), 2-(ii), 3-(iv), 4-(i)... 3 Edit Delete
13508 Which of the following is common in Cnidarians and Ctenophora 6 601 Recommended Questions Digestion is both intracellular and extracellular, Cnidoblast... 1 Edit Delete
13507 Which of the following is known as Tapeworm 6 601 Recommended Questions Dugesia tigrina, Taenia solium... 2 Edit Delete
13506 Which of the following is true about Ctenophores? 6 601 Recommended Questions Reproduction takes place by sexual means only, Fertilisation is external... 4 Edit Delete
13505 Planaria possess high capacity of 6 601 Recommended Questions metamorphosis, regeneration... 2 Edit Delete
13504 Which of the following is known liverfluke 6 601 Recommended Questions Taeniasaginata, Taeniasolium... 3 Edit Delete
13503 Which of the following helps in excretion and osmoregulation in Flatworms 6 601 Recommended Questions Flame cells, Nephridia... 1 Edit Delete
13502 The number of ciliated rows present in Comb jellies are 6 601 Recommended Questions 8, 6... 1 Edit Delete
13501 Which is true for flatworms? 6 601 Recommended Questions Bilaterally symmetrical, Triploblastic body plan... 4 Edit Delete
13500 Read the given features (a) Presence of cnidoblasts (b) Alternation of generation (c) Extracellular and intracellular digestion All of the above given features are observed in 6 601 Recommended Questions Hydra, Physalia... 2 Edit Delete
13499 The umbrella shaped and free-swimming form of Cnidarians is not present in 6 601 Recommended Questions Aurelia, Jellyfish... 3 Edit Delete
13498 In which of the following form metamerism is present 6 601 Recommended Questions Obelia, Hydra... 4 Edit Delete
13497 The distinctive feature of Cnidarians is 6 601 Recommended Questions Cnidoblast, Polyp and Medusa form... 1 Edit Delete
13496 Stinging capsule present in Cnidarians is called 6 601 Recommended Questions Nematocysts, Choanocytes... 1 Edit Delete
13495 What is not true regarding Cnidarians? 6 601 Recommended Questions Body is made up of distinct tissues but true organs have not evolved, They are carnivores... 4 Edit Delete
13494 Which of the following is wrong about Coelenterata? 6 601 Recommended Questions They are aquatic and exclusively marine animals., Cnidarians exhibit tissue level of organisation and are diploblastic.... 1 Edit Delete
13493 The sessile and cylindrical form of Cnidarians is called as 6 601 Recommended Questions Medusa, Polyp... 2 Edit Delete
13492 A sessile, cylindrical and radial symmetrical life form is found in 6 601 Recommended Questions Hydra, Obelia... 4 Edit Delete
13491 Metagenesis is not present in 6 601 Recommended Questions Obelia, Adamsia... 4 Edit Delete
13490 The structure shown in the given diagram is characteristically seen in the Phylum: 6 601 Recommended Questions Porifera, Ctenophora... 3 Edit Delete
13489 Which of the following is true about Gastro-vascular cavity of Cnidarians? 6 601 Recommended Questions It contains single opening, Mouth on hypostome... 4 Edit Delete
13488 Which of the following not started from Cnidarians? 6 601 Recommended Questions Tissue level of Organisation, Radial symmetry... 4 Edit Delete
13487 The name of the phylum Cnidaria is derived from the 6 601 Recommended Questions Nematocysts, Cnidoblasts... 4 Edit Delete
13486 Both polyp and medusa life forms are present in the life cycle of 6 601 Recommended Questions Obelia, Physalia... 1 Edit Delete
13485 The skeleton of corals is made up of 6 601 Recommended Questions Calcium silicate, Calcium phosphate... 4 Edit Delete
13484 The digestive system in Meandrina is 6 601 Recommended Questions Digestion is extracellular only, Digestion is intracellular only... 3 Edit Delete
13483 Metagenesis refers to 6 601 Recommended Questions the presence of different morphic forms, alternation of generation between asexual and sexual phases of an organism... 2 Edit Delete
13482 Nematocytes are present in 6 601 Recommended Questions Adamsia, Hirudinaria... 1 Edit Delete
13481 Which of the following cnidarians are radially symmetrical and sessile? 6 601 Recommended Questions Hydra, Aurelia... 4 Edit Delete
13480 Which of the following is known as Portuguese man of war? 6 601 Recommended Questions Pennatula, Adamsia... 4 Edit Delete
13479 Which of the following germinal layer is absent in Cnidarians 6 601 Recommended Questions Ectoderm, Endoderm... 3 Edit Delete
13478 Physalia is a coelenterate which is also known as 6 601 Recommended Questions sea pen, sea fan... 3 Edit Delete
13477 Which of the following is incorrect statement 6 601 Recommended Questions Polyp produce medusae asexually, Medusae produce polyp sexually... 3 Edit Delete
13476 Stinging capsules (nematocysts) are found in 6 601 Recommended Questions wasp and honeybee, scorpion and cobra... 3 Edit Delete
13475 Which of the following group consists exclusively of cnidarians? 6 601 Recommended Questions Aplysia, Gorgonia, Spongilla, Hydra, Hydra, pennatula, obelia, Echinus... 3 Edit Delete
13474 Match the following 1) Pennatula (i) sea fan 2) Gorgonia (ii) brain coral 3) Meandrina (iii) sea anemone 4) Adamsia (iv) sea pen 6 601 Recommended Questions 1-(i), 2-(ii), 3-(iii), 4-(iv), 1-(iv), 2-(i), 3-(ii), 4-(iii)... 2 Edit Delete
13473 Meandrina which is also known as Brain Coral is a 6 601 Recommended Questions Poriferan, Coelenterate... 2 Edit Delete
13472 Alternation of generation is present in 6 601 Recommended Questions Sea-pen, Sea-fan... 3 Edit Delete
13471 Cnidocytes are used for 6 601 Recommended Questions Anchorage, Defence... 4 Edit Delete
13470 Which of the following is true about the given organism? 6 601 Recommended Questions It is a medusa form of Aurelia, It is Fresh water sponge... 3 Edit Delete
13469 Which of the following combinations of phylum and description is incorrect? 6 601 Recommended Questions Echinodermata—branch Bilateria, coelom from archenteron, Nematoda—roundworms, pseudocoelomate... 4 Edit Delete
13468 The animals belonging to all the following groups are exclusively marine except: 6 601 Recommended Questions Ctenophora, Porifera... 2 Edit Delete
13467 Which of the following is true about the following organism? 6 601 Recommended Questions Radial symmetry is present, Fertilisation is external... 3 Edit Delete
13466 In sponges, digestion is 6 601 Recommended Questions Intercellular, Intracellular... 2 Edit Delete
13465 Fragmentation is a method of asexual reproduction in 6 601 Recommended Questions Annelida, Platyhelminthes... 4 Edit Delete
13464 The water canal system is found in: 6 601 Recommended Questions Echinus, Sycon... 2 Edit Delete
13463 Which of the following is true about sponges except 6 601 Recommended Questions Sponges are hermaphrodite, Fertilisation is internal... 3 Edit Delete
13462 Which of the following is not true about the given organism? 6 601 Recommended Questions Bilateral symmetry is present, Hermaphrodite... 1 Edit Delete
13461 Fresh water sponge is the common name of 6 601 Recommended Questions Hydra, Sycon... 3 Edit Delete
13460 Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct? 6 601 Recommended Questions Penguin is homeothermic while the remaining three are poikilothermic, Leech is a fresh water form while all others are marine... 3 Edit Delete
13459 Which of the following is not true about Porifera 6 601 Recommended Questions Cellular level of organisation, Radial symmetry... 2 Edit Delete
13458 Water transport system or canal system is a characteristic feature of which animal? 6 601 Recommended Questions Spongilla, Hydra... 1 Edit Delete
13457 Correct flow water current in sponges is:- 6 601 Recommended Questions Ostia → Osculum → Spongocoel → Outside, Osculum → Spongocoel → Ostia → Outside... 3 Edit Delete
13456 Which of the following cell of sponges contains flagella 6 601 Recommended Questions Nematocyst, Spongioblast... 4 Edit Delete
13455 Water canal is lined by 6 601 Recommended Questions Spongin fibres, Choanocytes... 4 Edit Delete
13454 The minute pores in the body wall of the sponges is known as 6 601 Recommended Questions spongocoel, Ostia... 2 Edit Delete
13453 The mode of reproduction in sponges is 6 601 Recommended Questions Sexual, Asexual... 3 Edit Delete
13452 In case of poriferans, the spongocoel is lined with flagellated cells called 6 601 Recommended Questions ostia, oscula... 3 Edit Delete
13451 Collar cells are present in the members of which phyla 6 601 Recommended Questions Echinodermata, Coelenterata... 4 Edit Delete
13450 All the following are present in sponges, except 6 601 Recommended Questions Spicules, Choanocytes... 3 Edit Delete
13449 Which one of the following is incorrect about Porifera? 6 601 Recommended Questions Presence of spongin fibres, Cellular level of organisation... 3 Edit Delete
13448 Find the incorrect match 6 601 Recommended Questions Sycon-Scypha, Spongilla-Fresh water sponge... 4 Edit Delete
13447 Canal system in sponges helps in 6 601 Recommended Questions Food gathering, Respiratory exchange... 4 Edit Delete
13446 Identify the following diagrams and these represent: 6 601 Recommended Questions (a) radial symmetry, (b) bilateral symmetry, (a) bilateral symmetry, (b) radial symmetry... 1 Edit Delete
13445 46 6 601 Recommended Questions 1, 2... 1 Edit Delete
13444 45 6 601 Recommended Questions 1, 2... 1 Edit Delete
13443 44 6 601 Recommended Questions 1, 2... 1 Edit Delete
13442 43 6 601 Recommended Questions 1, 2... 1 Edit Delete
13441 42 6 601 Recommended Questions 1, 2... 1 Edit Delete
13440 41 6 601 Recommended Questions 1, 2... 1 Edit Delete
13439 40 6 601 Recommended Questions 1, 2... 1 Edit Delete
13438 39 6 601 Recommended Questions 1, 2... 1 Edit Delete
13437 38 6 601 Recommended Questions 1, 2... 1 Edit Delete
13436 37 6 601 Recommended Questions 1, 2... 1 Edit Delete
13435 36 6 601 Recommended Questions 1, 2... 1 Edit Delete
13434 35 6 601 Recommended Questions 1, 2... 1 Edit Delete
13433 34 6 601 Recommended Questions 1, 2... 1 Edit Delete
13432 33 6 601 Recommended Questions 1, 2... 1 Edit Delete
13431 32 6 601 Recommended Questions 1, 2... 1 Edit Delete
13430 31 6 601 Recommended Questions 1, 2... 1 Edit Delete
13429 30 6 601 Recommended Questions 1, 2... 1 Edit Delete
13428 29 6 601 Recommended Questions 1, 2... 1 Edit Delete
13427 28 6 601 Recommended Questions 1, 2... 1 Edit Delete
13426 27 6 601 Recommended Questions 1, 2... 1 Edit Delete
13425 26 6 601 Recommended Questions 1, 2... 1 Edit Delete
13424 25 6 601 Recommended Questions 1, 2... 1 Edit Delete
13423 24 6 601 Recommended Questions 1, 2... 1 Edit Delete
13422 23 6 601 Recommended Questions 1, 2... 1 Edit Delete
13421 22 6 601 Recommended Questions 1, 2... 1 Edit Delete
13420 21 6 601 Recommended Questions 1, 2... 1 Edit Delete
13419 20 6 601 Recommended Questions 1, 2... 1 Edit Delete
13418 19 6 601 Recommended Questions 1, 2... 1 Edit Delete
13417 18 6 601 Recommended Questions 1, 2... 1 Edit Delete
13416 17 6 601 Recommended Questions 1, 2... 1 Edit Delete
13415 16 6 601 Recommended Questions 1, 2... 1 Edit Delete
13414 15 6 601 Recommended Questions 1, 2... 1 Edit Delete
13413 14 6 601 Recommended Questions 1, 2... 1 Edit Delete
13412 13 6 601 Recommended Questions 1, 2... 1 Edit Delete
13411 12 6 601 Recommended Questions 1, 2... 1 Edit Delete
13410 11 6 601 Recommended Questions 1, 2... 1 Edit Delete
13409 10 6 601 Recommended Questions 1, 2... 1 Edit Delete
13408 9 6 601 Recommended Questions 1, 2... 1 Edit Delete
13407 8 6 601 Recommended Questions 1, 2... 1 Edit Delete
13406 7 6 601 Recommended Questions 1, 2... 1 Edit Delete
13405 6 6 601 Recommended Questions 1, 2... 1 Edit Delete
13404 5 6 601 Recommended Questions 1, 2... 1 Edit Delete
13403 4 6 601 Recommended Questions 1, 2... 1 Edit Delete
13402 3 6 601 Recommended Questions 1, 2... 1 Edit Delete
13401 2 6 601 Recommended Questions 1, 2... 1 Edit Delete
13400 1 6 601 Recommended Questions 1, 2... 1 Edit Delete
13399 How many statements are correct about decomposition? (A) Oxygen independent process. (B) Faster if detritus is rich in lignin and chitin. (C) Light is the most important climatic factor for decomposition. (D) Warm and moist environment favour decomposition. 5 520 Recommended Questions One, Two... 1 Edit Delete
13398 Read the statements given below and choose the correct option Statement I: Decomposition is purely an anaerobic process. Statement II: The rate of decomposition is controlled by chemical composition of detritus and climatic factors. 5 520 Recommended Questions Only statement I is correct., Only statement I is incorrect.... 2 Edit Delete
13397 Which of the following is the substrate in the process of mineralisation? 5 520 Recommended Questions Detritus, Humus... 2 Edit Delete
13396 Which one of the following processes during decomposition is correctly described? 5 520 Recommended Questions Fragmentation-Carried out by organisms such as earthworms, Humification-Leads to the accumulation of a dark-coloured substance humus, which undergoes microbial action at a very fast rate... 1 Edit Delete
13395 Which of the following statement is correct? 5 520 Recommended Questions Dead plant and animals remains, including fecal matter, constitute detritus,, Detritus is the product of decomposition.... 1 Edit Delete
13394 Detritus is 5 520 Recommended Questions Dead raw material for decomposition., Partially decomposed organic matter.... 4 Edit Delete
13393 Which of the following statement is incorrect? 5 520 Recommended Questions All the steps in decomposition operate simultaneously on the humus., Humus is an accumulated dark coloured amorphous substance.... 1 Edit Delete
13392 The important step in the process of decomposition in order is: 5 520 Recommended Questions Catabolism → Fragmentation → Leeching → Humification → Mineralization, Catabolism → Fragmentation → Humification → Leeching → Mineralization... 4 Edit Delete
13391 What is the process by which Detritivores break down the detritus into smaller particles? 5 520 Recommended Questions Degradation, Decomposition... 3 Edit Delete
13390 Which of the following does not affect rate of decomposition? 5 520 Recommended Questions Substrate composition, Soil moisture... 4 Edit Delete
13389 In the process of decomposition 'catabolism' is performed by- 5 520 Recommended Questions Earthworms, Bacteria... 3 Edit Delete
13388 Decomposition would be fast if the detritus contains- 5 520 Recommended Questions Cellulose, Lignin and chitin... 3 Edit Delete
13387 Why do we call the earthworm as the farmer’s friend? 5 520 Recommended Questions It eats the pests., It prevents the growth of weeds.... 4 Edit Delete
13386 What does the process of leaching refers to- 5 520 Recommended Questions Accumulation of a dark coloured amorphous substance, Organic solvents reabsorbed by the plants... 4 Edit Delete
13385 Pheretima and its close relatives derive nourishment from: 5 520 Recommended Questions Sugarcane roots, Decaying fallen leaves and soil organic matter... 2 Edit Delete
13384 The rate of decomposition of detritus is slow when 5 520 Recommended Questions It contains lignin, chitin, tannins and cellulose, Temperature is more than 25°C... 1 Edit Delete
13383 Which of the following promotes the process of decomposition? 5 520 Recommended Questions Warm and moist environment, low temperature... 1 Edit Delete
13382 The term "detritivore" includes 5 520 Recommended Questions decomposers, primary consumers... 1 Edit Delete
13381 Ecosystem which shows above pyramid of biomass possess _____ and _____ pyramid of number and energy respectively. 5 520 Recommended Questions Inverted, upright, Upright, upright... 2 Edit Delete
13380 How many of these have no place in ecological pyramids? Detritivores, Scavengers, Decomposers, Producers, Insectivorous plant 5 520 Recommended Questions 2, 3... 3 Edit Delete
13379 Given below is a hypothetical pyramid of energy. The amount of energy left at the level of secondary consumers would approximately be: 5 520 Recommended Questions 10000 J, 1000 J... 4 Edit Delete
13378 Standing crop is: (i) Amount of detritus in unit area (ii) Number of living organisms in unit area (iii) Amount of nutrients such as carbon, nitrogen, and calcium in unit area (iv) Biomass in unit area 5 520 Recommended Questions (i) and (iv), (i) and (iii)... 3 Edit Delete
13377 The ecological pyramid of numbers in pond ecosystem is:- 5 520 Recommended Questions Inverted, Upright... 2 Edit Delete
13376 Identify the relationship represented by the pyramid 5 520 Recommended Questions Pyramid of number, Pyramid of biomass... 2 Edit Delete
13375 The limitations of ecological pyramids include all the following except: 5 520 Recommended Questions The do not take into account the same species belonging to two or more trophic levels, They do not represent relationships between organisms at different trophic levels... 2 Edit Delete
13374 Which of the following statement is incorrect? 5 520 Recommended Questions Only three top-carnivores are supported in an ecosystem based on production of nearly 6 million plants., Pyramid of biomass shows a sharp increase in biomass at higher trophic levels.... 2 Edit Delete
13373 Which of the following pyramid represents the pyramid of number in grassland? 5 520 Recommended Questions A, B... 3 Edit Delete
13372 Consider the following statements: I: Trophic level in an ecosystem represents a functional level, not a species as such. II: Saprophytes are accorded the position of a top consumer in an ecosystem. III: A species can occupy more than one trophic level in the same ecosystem at the same time. Which of the above statements are true? 5 520 Recommended Questions I and II only, I and III only... 2 Edit Delete
13371 Why does the pyramid of energy always upright? 5 520 Recommended Questions Because energy cannot be destroyed., Smaller organisms have more potential energy than larger ones... 3 Edit Delete
13370 Which of the following statement is incorrect? 5 520 Recommended Questions Any calculations of energy content, biomass or numbers, has to include all organisms at that trophic level., The base of each pyramid represents the producers or the first trophic level while the apex represents tertiary or top level consumer.... 4 Edit Delete
13369 In general, the biomass in an ecosystem will be greatest at the trophic level comprising. 5 520 Recommended Questions secondary consumers, primary consumers... 3 Edit Delete
13368 In grassland ecosystem the pyramid of biomass and energy will be A and B respectively. Choose the correct option to fill the blanks A and B. 5 520 Recommended Questions Upright Upright, Upright Inverted... 1 Edit Delete
13367 Which one of the following is not used for construction of ecological pyramids? 5 520 Recommended Questions Dry weight, Number of individuals... 4 Edit Delete
13366 Mark the odd one with respect to shape of ecological pyramids. 5 520 Recommended Questions Pyramid of energy., Pyramid of number in grassland ecosystem.... 3 Edit Delete
13365 For which of the following predatory food chain pyramid of biomass is inverted? 5 520 Recommended Questions Grass → Insect → Snake → Frog, Detritus → Sparrow → Earthworms... 3 Edit Delete
13364 If 20 J of energy is trapped at the producer level, then how much energy will be available to peacocks as food in the following chain? Plant → mice → snake → peacock 5 520 Recommended Questions 0.02 J, 0.002 J... 1 Edit Delete
13363 What type of ecological pyramid would be obtained with the following data? Secondary consumer: 120 g Primary consumer: 60 g Primary producer: 10 g 5 520 Recommended Questions Inverted pyramid of biomass, Pyramid of energy... 1 Edit Delete
13362 Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct? 5 520 Recommended Questions It shows energy content of different trophic level organisms, It is inverted in shape... 2 Edit Delete
13361 Which of the following pyramids can never be inverted in a natural ecosystem? 5 520 Recommended Questions pyramid of numbers, pyramid of energy... 2 Edit Delete
13360 The pyramid of biomass in the sea is generally 5 520 Recommended Questions Upright, Inverted... 2 Edit Delete
13359 Which of the following group of organisms is not included in the ecological pyramids? 5 520 Recommended Questions Herbivores, Carnivores... 3 Edit Delete
13358 The base of each pyramid represents the _______ or the ________ level while the apex represents ________. 5 520 Recommended Questions Consumers, first trophic and top trophic level, Producers, first trophic and top trophic level... 2 Edit Delete
13357 GPP utilizes ________ of incident radiation 5 520 Recommended Questions 1 - 5%, 2 - 10%... 2 Edit Delete
13356 If the available energy at first trophic level is 10000 J then how much trophic levels it could support further? 5 520 Recommended Questions 2, 3... 2 Edit Delete
13355 What is the source of energy for all ecosystems on Earth, except for the deep sea hydro-thermal ecosystem? 5 520 Recommended Questions Sun, Hydrothermal vents... 1 Edit Delete
13354 Choose the odd one with respect to trophic level 5 520 Recommended Questions zooplanktons, tadpole... 4 Edit Delete
13353 Which of the following is false? I. Quantity of biomass in a trophical level at a particular period is called standing crop. II. The energy content in a trophic level is determined by considering a few individuals of a species in that trophic level. III. The succession that occurs in nearly cooled lava is called primary succession. IV. Rate of succession is faster in the secondary succession V. Phytoplankton are the pioneers in aquatic succession 5 520 Recommended Questions Only II, Only III... 1 Edit Delete
13352 The standing crop is measured as the- 5 520 Recommended Questions Mass of living organisms in a unit area., The number of living organisms in a unit area.... 4 Edit Delete
13351 Plants capture approximately _______________ of the sun's energy while other trophic levels capture about _______________ of the energy available to them in their food. 5 520 Recommended Questions 1%, 10%, 10%, 60%... 1 Edit Delete
13350 Identify the odd one out. 5 520 Recommended Questions Cockroach, Crow... 4 Edit Delete
13349 Which of the following is/are incorrect: A. All ecosystems are constant in size B. In nature food chains exist, not food web C. Flow of energy in ecosystem is unidirectional D. Gene flow occurs between 2 different population (of 2 species) 5 520 Recommended Questions A, C, A, D... 3 Edit Delete
13348 Detritus food chain may be connected with the grazing food chain at some levels. This is evident from i: Some of the organisms of DFC are prey to the GFC animals ii: In a natural ecosystem, some animals like cockroaches, crows, etc., are omnivores. iii: Some of the organisms of GFC are facultative decomposers 5 520 Recommended Questions i and iii, i and ii... 2 Edit Delete
13347 The detritus food chain (DFC) begins with ________. It is made up of decomposers which are ________ organisms, mainly ________. They meet their energy and nutrient requirements by degrading ________. 5 520 Recommended Questions detritus, heterotrophic, earthworm and dead organic matter., dead organic matter, heterotrophic, fungi and bacteria, dead organic matter.... 2 Edit Delete
13346 Which of the following statement is incorrect? 5 520 Recommended Questions Ecosystems are exempted from the Second Law of thermodynamics., An ecosystem has a tendency toward increasing disorderliness.... 1 Edit Delete
13345 What proportion of the PAR (photosynthetically active radiation) is captured by plants? 5 520 Recommended Questions 1 - 10%, 2 - 10%... 2 Edit Delete
13344 What do you mean by a food web? 5 520 Recommended Questions Group of food chains., Food chains present in a particular area... 3 Edit Delete
13343 Most food chains are composed of 5 520 Recommended Questions 1 or 2 species, 3 or 4 species... 2 Edit Delete
13342 What do secondary carnivores refer to? 5 520 Recommended Questions Animals at second trophic level, Those animals that depend on the herbivores for food... 3 Edit Delete
13341 Which trophic level is incorrectly defined? 5 520 Recommended Questions Carnivores- secondary or tertiary consumer, Decomposer- microbial heterotrophs... 4 Edit Delete
13340 Which trophic level is incorrectly defined? 5 520 Recommended Questions Carnivores- secondary or tertiary consumer, Decomposer- microbial heterotrophs... 4 Edit Delete
13339 Consider the following four statements (A–D), select the correct option stating which ones are true (T) and which ones are false (F) 5 520 Recommended Questions A: T, B: T, C: F, D: F, A: F, B: T, C: F, D: T... 4 Edit Delete
13338 Why does the number of trophic levels in the grazing food chain is restricted? 5 520 Recommended Questions As the transfer of energy follows 10 per cent law, So that food chain remains short... 1 Edit Delete
13337 The second trophic level in a lake is: 5 520 Recommended Questions Phytoplankton, Zooplankton... 2 Edit Delete
13336 Based on the source of organism's nutrition or food, they occupy a specific place in the food chain that is known as- 5 520 Recommended Questions Strata, Trophic level... 2 Edit Delete
13335 What does 10 per cent law say? 5 520 Recommended Questions Less than 10 per cent of the energy is transferred to each trophic level from the lower trophic level, Only 10 per cent of the energy is transferred to each trophic level from the lower trophic level... 2 Edit Delete
13334 Of the total incident solar radiation the proportion of PAR is 5 520 Recommended Questions about 60%, less than 50%... 2 Edit Delete
13333 Which are the primary consumers in a grazing food chain? 5 520 Recommended Questions Carnivores, Herbivores... 2 Edit Delete
13332 Energy flow in an ecosystem is 5 520 Recommended Questions unidirectional, bidirectional... 1 Edit Delete
13331 Consider the following statements: I: The rate of production of organic matter during photosynthesis is called as gross primary productivity of an ecosystem. II: The available biomass for the consumption of heterotrophs is called secondary productivity. III: The low productivity of the oceans can mainly be attributed to the limited availability of nitrogen. Which of the above statements are true? 5 520 Recommended Questions I and II only, I and III only... 2 Edit Delete
13330 At the trophic level of consumers, the rate at which food energy is assimilated, is called: 5 520 Recommended Questions Secondary productivity, Gross primary productivity... 1 Edit Delete
13329 The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is called primary production, which is expressed as: 5 520 Recommended Questions g m⁻², kcal m⁻²... 4 Edit Delete
13328 Primary production is expressed in terms of- 5 520 Recommended Questions Grams, Grams/year... 3 Edit Delete
13327 Which of the following statement is incorrect? 5 520 Recommended Questions Gross primary productivity is the rate of production of organic matter during photosynthesis., Net primary productivity plus respiration losses, is the gross primary productivity.... 4 Edit Delete
13326 Which of the following contributes the maximum to the net primary productivity? 5 520 Recommended Questions Ocean ecosystem, Land ecosystem... 2 Edit Delete
13325 The biomass available for consumption by the herbivores and the decomposers is called 5 520 Recommended Questions net primary productivity, secondary productivity... 1 Edit Delete
13324 Consider the following two statements: I. The annual net primary productivity of the whole biosphere is approximately 170 billion tons (dry weight) of organic matter. II. Majority of this is contributed by the oceans as they occupy larger area of earth. 5 520 Recommended Questions Both I and II are correct and II explains I, Both I and II are correct but II does not explain I... 3 Edit Delete
13323 The mass of living material at a tropic level at a particular time is called 5 520 Recommended Questions Gross primary productivity, Standing state... 4 Edit Delete
13322 What do you mean by Productivity? 5 520 Recommended Questions Rate of biomass production, Amount of biomass production... 1 Edit Delete
13321 Net primary productivity is the gross primary productivity minus 5 520 Recommended Questions that which is consumed by herbivores, that which is consumed by producer in metabolism... 2 Edit Delete
13320 In an ecosystem, the rate of production of organic matter during photosynthesis is termed as: 5 520 Recommended Questions net primary productivity, gross primary productivity... 2 Edit Delete
13319 The secondary productivity means 5 520 Recommended Questions Rate of increase in the biomass of autotrophs., Rate of increase in the biomass of heterotrophs.... 2 Edit Delete
13318 Which of the following is not correctly matched? 1. Productivity - Rate of biomass production 2. Gross primary productivity of earth - Rate of productivity of organic matter during photosynthesis 3. Net primary productivity - Available biomass for consumption by heterotrophs 4. Secondary productivity - Formation of new organic matter by producers 5 520 Recommended Questions 1 (5 %), 2 (9 %)... 4 Edit Delete
13317 The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis is called as- 5 520 Recommended Questions Biomass production, Primary production... 2 Edit Delete
13316 The basic requirement for any ecosystem to function and sustain is 5 520 Recommended Questions Enormous amount of water, Constant input of solar energy... 2 Edit Delete
13315 What is the annual net primary productivity of the whole biosphere 5 520 Recommended Questions 160 billion tons, 170 billion tons... 2 Edit Delete
13314 Primary productivity of a terrestrial ecosystem depends upon 5 520 Recommended Questions Photosynthetic capacity of plants., A variety of environmental factors,... 4 Edit Delete
13313 Read the given statements stating true (T) and false (F) and select the correct option. A. Anthropogenic ecosystem possess self regulatory mechanism B. Forest is a natural ecosystem C. Estuaries is a terrestrial ecosystem 5 520 Recommended Questions T T F, F T F... 2 Edit Delete
13312 Identify the odd one out? 5 520 Recommended Questions Forest, Grassland... 4 Edit Delete
13311 Which of the following is not a man-made ecosystem? 5 520 Recommended Questions Pond, Crop-field... 1 Edit Delete
13310 Which vertical strata is occupied by trees in a forest? 5 520 Recommended Questions Top, Middle... 1 Edit Delete
13309 Find the odd one out with respect to functional component of ecosystem 5 520 Recommended Questions Productivity, Stratification... 2 Edit Delete
13308 Which of the following could affect the rate of function of a pond? 5 520 Recommended Questions The solar input, The cycle of temperature... 4 Edit Delete
13307 Which one of the following is one of the characteristics of a biological community? 5 520 Recommended Questions Stratification, Natality... 1 Edit Delete
13306 Which one of the following is not a functional unit of an ecosystem? 5 520 Recommended Questions Energy flow, Decomposition... 4 Edit Delete
13305 Vertical distribution of different species occupying different levels in a biotic community is known as 5 520 Recommended Questions divergence, stratification... 2 Edit Delete
13304 Which of the following is the functional unit of nature? 5 520 Recommended Questions A plant, An animal... 3 Edit Delete
13303 Regional and local variations within each biome lead to the formation of a wide variety of:- 5 519 Recommended Questions Niche, Population... 4 Edit Delete
13302 The population with the following age pyramid: 5 519 Recommended Questions Will grow exponentially in near future, Will grow steadily in the future... 3 Edit Delete
13301 Natural selection operates at the level of:- 5 519 Recommended Questions Organism, Population... 2 Edit Delete
13300 Population Ecology links 5 519 Recommended Questions Ecology to Evolution, Ecology to Genetics... 3 Edit Delete
13299 To get pollinated by a bee, the Mediterranean Orchid, Ophrys, employs: 5 519 Recommended Questions Sexual deceit, Pseudo-copulation... 1 Edit Delete
13298 The interacting species live closely together in which of the following interaction? 5 519 Recommended Questions Parasitism, Predation and Commensalism, Commensalism, Amensalism... 1 Edit Delete
13297 Select the wrongly matched pair 1. Predator - Herbivore. 2. Brood parasitism - Cuckoo. 3. Commensalism - Barnacles on the whale. 4. Mutualism - Sea anemone on a hermit crab. 5 519 Recommended Questions 1 (20 %), 2 (3 %)... 4 Edit Delete
13296 Commensalism is an association of two species in which 5 519 Recommended Questions one lives, attached to the other, without harming it, both organisms derive benefits from each other... 1 Edit Delete
13295 Match column I with column II and select the correct option from the codes given below. 5 519 Recommended Questions (iv) (ii) (iii) (i), (iii) (iv) (ii) (i)... 3 Edit Delete
13294 Which one of the following is a matching pair of certain organism(s) and the kind of association? 5 519 Recommended Questions Shark and sucker fish - predation, Algae and fungi in lichens - mutualism... 2 Edit Delete
13293 Barnacles growing on the back a whale, a type of population interaction, is an example of 5 519 Recommended Questions Competition, Mutualism... 4 Edit Delete
13292 Sexual deceit is employed by 5 519 Recommended Questions Ophrys to get pollinated., Orchids on mango for shelter.... 1 Edit Delete
13291 Which of the following associations shows mutualism? 5 519 Recommended Questions Fig and wasp, Barnacles on whale... 1 Edit Delete
13290 Epiphytes growing on mango is an example of which type of the given population interaction? 5 519 Recommended Questions Competition, Protocooperation... 3 Edit Delete
13289 Connell's elegant field experiments are related to: 5 519 Recommended Questions Paramecium, Barnacles... 2 Edit Delete
13288 Mycorrhizae are the example of 5 519 Recommended Questions fungistasis, amensalism... 4 Edit Delete
13287 The process where a population inhibits the growth of other population without affecting itself is known as 5 519 Recommended Questions Amensalism, Parasitism... 1 Edit Delete
13286 Choose the incorrect match regarding population interactions. 5 519 Recommended Questions Amensalism: Species A (-), Species B (-), Parasitism: Species A (+), Species B (-)... 1 Edit Delete
13285 Select the false one: 1. The niche of a population is the set of conditions and resources it uses 2. Competitive exclusion principle was first described by Gause, for species of Paramecium 3. If a new predator is introduced to an area the prey species is likely to decrease and possibly become extinct 4. None of the above 5 519 Recommended Questions The niche of a population is the set of conditions and resources it uses, Competitive exclusion principle was first described by Gause, for species of Paramecium... 2 Edit Delete
13284 Which one of the following is categorised as a parasite in true sense? 5 519 Recommended Questions Human foetus developing inside the uterus draws nourishment from the mother, Head lice living on the human scalp as well as laying eggs on human hair... 2 Edit Delete
13283 The evolution of the animal immune system was probably driven by: 5 519 Recommended Questions Herbivores pushing the animals toward extinction, The selective pressures of parasitic and disease organisms... 2 Edit Delete
13282 Which of the following will breed more than once in their life cycle? 5 519 Recommended Questions Pacific salmon fish, Bamboo... 3 Edit Delete
13281 Which of the following is not an ectoparasite? 5 519 Recommended Questions Lice on humans, Copepods on marine fishes... 4 Edit Delete
13280 Parasites evolved special adaptations in accordance with their life styles. Choose odd one out with respect to these adaptations. 5 519 Recommended Questions High reproductive capacity, Simple life cycle and complex morphological, anatomical features... 2 Edit Delete
13279 In general, which of the following is not an adaptation seen in parasites in accordance with their life style? 5 519 Recommended Questions Loss of unnecessary sense organs, Presence of adhesive organs... 3 Edit Delete
13278 By a particular interaction in a population, one species was harmed while other was benefited. Such interaction is called as 5 519 Recommended Questions Competition, Predation... 4 Edit Delete
13277 If '+' sign is assigned to beneficial interaction, '-' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '-' refers to 5 519 Recommended Questions Mutualism, Amensalism... 4 Edit Delete
13276 No predator can become proficient at acquiring prey because: 5 519 Recommended Questions Predators are not as intelligent as prey., Predators are too large to be fast enough.... 4 Edit Delete
13275 If in a hypothetical case, you remove a predator from an ecosystem and as a result few prey species get extinct. What does it show 5 519 Recommended Questions Interspecific competition, Intraspecific competition... 1 Edit Delete
13274 Biocontrol of crop pests is often based on which of the following interspecific interactions? 5 519 Recommended Questions Competition, Amensalism... 3 Edit Delete
13273 In a tide pool, 15 species of invertebrates were reduced to 8 after one species was removed. The removed species may be a: 5 519 Recommended Questions Parasite, Mutualist... 3 Edit Delete
13272 Resemblance of one organism with its surroundings for protection and hiding is 5 519 Recommended Questions mimicry, predation... 4 Edit Delete
13271 In a broad ecological context, which of the following can be a predator? 5 519 Recommended Questions Seed eating sparrow, Lion... 1 Edit Delete
13270 When certain exotic species are introduced into a geographical area, they become invasive mainly because: 5 519 Recommended Questions The invaded land has unlimited resources for the introduced species, The invaded land does not have its natural predator... 2 Edit Delete
13269 Study the four statements (1-4) given below and select the two correct ones out of them. (1) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers (2) Predator star fish Pisaster helps in maintaining species diversity of some invertebrates (3) Predators ultimately lead to the extinction of prey species (4) Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders The two correct statements are 5 519 Recommended Questions (2) and (3), (3) and (4)... 4 Edit Delete
13268 When the predator keeps on eating the prey, then in the end there should be no more prey to be eaten by the predator. But this situation is not observed in the case of predation in nature. Because 5 519 Recommended Questions Predators are prudent enough, Prey has developed a defense mechanism not to allow predators to overexploit them... 4 Edit Delete
13267 Predation can be thought as 5 519 Recommended Questions Prey's way to control its the population, Nature's way of transferring energy to higher trophic levels.... 2 Edit Delete
13266 Which of the following is not produced by plants as a product of defense mechanism? 5 519 Recommended Questions Nicotine, quinine, Caffeine... 4 Edit Delete
13265 Consider the following statements: I: When certain exotic species are introduced into a geographical area, they become invasive because the invaded land does not have its natural predators. II: Competition is best defined as a process in which the fitness of one species is significantly lower in the presence of another species. III: Biological control methods adopted in agricultural pest control are based on the ability of the predator to regulate the prey population. Which of the above statements are true? 5 519 Recommended Questions I and II only, I and III only... 4 Edit Delete
13264 How many insects are phytophagous? And such interaction is called as 5 519 Recommended Questions 30%, parasitism, 25% predation... 2 Edit Delete
13263 The prickly pear cactus introduced in Australia in the 1920s got famous because of the lack of which population interaction? 5 519 Recommended Questions Competition, Predation... 2 Edit Delete
13262 Monarch butterfly escapes from predators by 5 519 Recommended Questions foul smell, bitter taste... 2 Edit Delete
13261 Which of the following is not a function of predators? 5 519 Recommended Questions They act as conduits for energy transfer across trophic levels, They keep prey populations under control... 4 Edit Delete
13260 Calotropis doesn't allow any cows and goats to browse around by releasing 5 519 Recommended Questions Cardiac glucosamine, Cardiac glucoside... 3 Edit Delete
13259 In a field experiment, when all Pisaster starfish were removed from an enclosed intertidal area, the result was: 5 519 Recommended Questions Increase in diversity of invertebrates, Extinction of many invertebrate species... 2 Edit Delete
13258 The invasiveness of prickly pear cactus in Australia was controlled by introducing a predator from its natural habitat and this predator was 5 519 Recommended Questions A ladybird, A moth... 2 Edit Delete
13257 As a mechanism of defense against herbivory, Calotropis: 5 519 Recommended Questions Has large number of thorns, Secretes cardiac glycosides... 2 Edit Delete
13256 Acacia and Cactus show which kind of defenses? 5 519 Recommended Questions Biochemical, Biomolecular... 3 Edit Delete
13255 Monarch Butterfly 5 519 Recommended Questions has biochemical defense mechanism, acquires biochemical defense mechanism during its caterpillar stage by feeding on poisonous weed... 4 Edit Delete
13254 Predators cannot perform 5 519 Recommended Questions conduit for energy transfer, control prey species... 4 Edit Delete
13253 Which of the following is not entirely true fact? 1. Competition occurs when closely related species compete for the same resources that are limiting 2. Totally unrelated species could compete for the same resource 3. Resources need not be limiting for competition to occur. In interference competition, the feeding efficiency of one species might be reduced due to the interference and inhibitory presence of the other species, even if resources are abundant. 4. A complex interplay of interspecific interactions and environmental variability characterizes community structure 5 519 Recommended Questions Competition occurs when closely related species compete for the same resources that are limiting, Totally unrelated species could compete for the same resource... 1 Edit Delete
13252 Competition occurs when closely related species compete for the same resources that are limiting. In this statement two concepts are emphasized, one is closely related species and the other the resources are limiting. 5 519 Recommended Questions first concept is entirely wrong while the second concept is entirely correct., First concept is right while the second is partially correct... 3 Edit Delete
13251 A species whose distribution is restricted to a small geographical area because of the presence of a competitively superior species is found to expand its distributional range dramatically when the competing species is experimentally removed. This is called: 5 519 Recommended Questions Competitive Exclusion, Competitive Release... 2 Edit Delete
13250 The principle of competitive exclusion was stated by 5 519 Recommended Questions C Darwin, GF Gause... 2 Edit Delete
13249 According to Darwin, organic evolution is due to: 5 519 Recommended Questions Interspecific competition., Competition within closely related species.... 1 Edit Delete
13248 Competition can be defined best as 5 519 Recommended Questions A process in which the fitness of one species i.e. r is significantly lower in the presence of another species., Competition occurs when closely related species compete for the same resources that are limiting.... 1 Edit Delete
13247 The feeding efficiency of one species might be reduced due to the inhibitory presence of another species with abundant food and space. What does it imply? 5 519 Recommended Questions For competition to occur, resources need not be limited, Interference competition... 4 Edit Delete
13246 Statement - 1: Herbivores and plants appear to be more adversely affected by competition than carnivores. Statement - 2: Competition is a process in which fitness of one species is significantly lower in the presence of another species. 5 519 Recommended Questions Both statements are correct., Both statements are incorrect.... 1 Edit Delete
13245 Gause's Competitive Exclusion Principle is challenged by 5 519 Recommended Questions Competitive release, Resource Partitioning... 2 Edit Delete
13244 Gause's principle of competitive exclusion states that 5 519 Recommended Questions Competition for the same resources excludes species having different food preferences, No two species can occupy the same niche indefinitely for the same limiting resources... 2 Edit Delete
13243 Through resource partitioning: 5 519 Recommended Questions Two species can compete for the same prey, Slight variation in niche allow closely related species to co-exist in the same habitat... 2 Edit Delete
13242 Carnivorous animals - lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as: 5 519 Recommended Questions Character displacement, Altruism... 3 Edit Delete
13241 Darwin was convinced enough for considering......... A potential force in organic evolution. 5 519 Recommended Questions Interspecific competition, Intraspecific competition... 1 Edit Delete
13240 In some shallow South American lakes visiting Flamingoes and Resident Fishes show which kind of interaction? 5 519 Recommended Questions Competition, Predation... 1 Edit Delete
13239 A bird introduced from another country became a serious pest due to: 5 519 Recommended Questions Better adaptation to new area, More sexual reproduction... 4 Edit Delete
13238 The Abingdon tortoise in Galapagos Islands became extinct within a decade after goats were introduced on the island apparently due to 5 519 Recommended Questions Superiority of goats, Greater browsing efficiency of goats... 2 Edit Delete
13237 In which of the following interactions both partners are adversely affected? 5 519 Recommended Questions Competition, Predation... 1 Edit Delete
13236 Life History traits 5 519 Recommended Questions Evolved with the constraints imposed by mainly the Abiotic Factors of that habitat, An intense research area... 3 Edit Delete
13235 Under a particular set of selection pressures, organisms evolve towards the most efficient: 5 519 Recommended Questions Thermoregulation, Water conservation... 4 Edit Delete
13234 Darwinian fitness is represented by: 5 519 Recommended Questions Low r value, High r value... 2 Edit Delete
13233 Evolution of population 5 519 Recommended Questions Maximizing Reproductive fitness, Low r value... 1 Edit Delete
13232 The logistic population growth model, dN/dt = rN (K - N/K), describes a populations growth when an upper limit to growth is assumed. This upper limit to growth is known as the population's _______, and as N gets larger, dN/dt _______. 5 519 Recommended Questions Biotic potential, increases, Biotic potential, decreases... 4 Edit Delete
13231 Under normal circumstances which of the following affects population density most? 5 519 Recommended Questions Nt, B... 2 Edit Delete
13230 When the population density reaches the carrying capacity, the logistic growth curve is said to be in: 5 519 Recommended Questions Lag phase, A phase of acceleration... 4 Edit Delete
13229 Carrying capacity for a population is estimated at 500; the population size is currently 400; and rmax = 0.01. What is dN/dt? 5 519 Recommended Questions 0.01, 0.8... 2 Edit Delete
13228 Which is correctly labelled with respect to the given diagram? 5 519 Recommended Questions B: Logistic curve, C: Carrying capacity... 4 Edit Delete
13227 What does K mean? 5 519 Recommended Questions Nature's Carrying Capacity, Number of individuals of a species supported by nature as per the resources available... 4 Edit Delete
13226 Study the population growth curves shown in the above diagram. Which option is the best for curve (i) and (ii)? 5 519 Recommended Questions Logistic curve, Exponential curve, Unlimited, Limited, Exponential curve, Logistic curve, Unlimited, Limited... 2 Edit Delete
13225 Verhulst-Pearl population growth is described by the equation 5 519 Recommended Questions dN/dt = rN, Nt = N0ert... 4 Edit Delete
13224 In nature, a given habitat has enough resources to support a maximum possible number, beyond which no further growth is possible. The limit is known as 5 519 Recommended Questions Environmental resistance, Intrinsic rate of natural increase... 3 Edit Delete
13223 Which one of the following growth model considered as more realistic one? 5 519 Recommended Questions Exponential growth curve, Logistic growth curve... 2 Edit Delete
13222 The logistic growth curve of animal population growth is more realistic than J shaped curve because: 5 519 Recommended Questions Asexual mode of reproduction is rare in higher animals, Resources are finite and become limiting sooner or later.... 2 Edit Delete
13221 When the value of 'r' is significantly low as compared to another species, it is better known by: 5 519 Recommended Questions Competition exclusion, Interference competition... 2 Edit Delete
13220 The equation of the exponential growth curve of the population has 'r' that means which of the following statements? 5 519 Recommended Questions Extrinsic rate of natural increase, An important parameter for assessing impacts of only biotic factors on population growth... 4 Edit Delete
13219 In a population growth rate curve the lag phase represents the period when a population is adjusting to a new environment. II. In a population growth rate curve the steepest part of growth phase represents the period when a population is growing exponentially. III. In the stationary phase of a population growth rate curve the population is in dynamic equilibrium IV. Human have changed the carrying capacity of the earth. 5 519 Recommended Questions All are correct, I, II, III... 1 Edit Delete
13218 The innate potential to grow in number does not follow which of the following statements? 5 519 Recommended Questions Each species has this ability, When resources are unlimited only then it is realized... 4 Edit Delete
13217 Exponential growth occurs when there is: 5 519 Recommended Questions Asexual reproduction only, Sexual reproduction only... 3 Edit Delete
13216 Find the correct mathematical expression for geometric growth resulting in a J-shaped population growth curve. 5 519 Recommended Questions dN/dt = rN, K - N/K... 1 Edit Delete
13215 The formula for exponential population growth is:- 5 519 Recommended Questions dt/dN = rN, dN/rN = dt... 4 Edit Delete
13214 The size of the population for any species is 5 519 Recommended Questions Dynamic, Static... 1 Edit Delete
13213 What is true for individuals of same species? 5 519 Recommended Questions Live in same niche, Live in same habitat... 3 Edit Delete
13212 Which of the following factors increases population density more significantly if new habitat is colonized? 5 519 Recommended Questions Natality, Mortality... 3 Edit Delete
13211 In the V-PL growth curve, the asymptote is reached when 5 519 Recommended Questions It's a lag phase, Just before the lag phase... 3 Edit Delete
13210 What four factors define population growth? 5 519 Recommended Questions Births; deaths, immigration, emigration, Survivorship, age-specific mortality, fecundity, death rate... 1 Edit Delete
13209 The country with the given population pyramid is likely to have: 5 519 Recommended Questions Low birth rate, High death rate... 2 Edit Delete
13208 A country with a high rate of population growth took measures to reduce it. The figure below shows age sex pyramids of populations. A and B twenty years apart. Select the correct interpretation about them. 5 519 Recommended Questions 'A' is more recent and shows slight reduction in the growth rate, 'B' is earlier pyramid and shows stabilized growth rate... 1 Edit Delete
13207 The age distribution of a population is determined by: 5 519 Recommended Questions Timing of birth, Timing of death... 4 Edit Delete
13206 Geometric representation of age structure is a characteristic of: 5 519 Recommended Questions Biotic community, Population... 2 Edit Delete
13205 A broad-based, pyramid shaped age structure is characteristic of a population that is: 5 519 Recommended Questions Growing rapidly, At carrying capacity... 1 Edit Delete
13204 In a growing population of a country: 5 519 Recommended Questions pre-reproductive individuals are more than reproductive individuals., reproductive individuals are less than post-reproductive individuals.... 1 Edit Delete
13203 What type of human population is represented by the following age pyramid? 5 519 Recommended Questions Stable population, Declining population... 2 Edit Delete
13202 If the age distribution (percent individuals of a given age or age group) is plotted for population, the resulting structure is called: 5 519 Recommended Questions Survivorship curve, Life table... 3 Edit Delete
13201 Calculate the birth rate of a population which has 20 individuals at time t, after one year 8 individuals have also counted along with those 20. 5 519 Recommended Questions .3, 0.2... 3 Edit Delete
13200 Natality refers to: 5 519 Recommended Questions Death rate, Birth rate... 2 Edit Delete
13199 Triangular age pyramid represents 5 519 Recommended Questions Expanding population., Declining population.... 1 Edit Delete
13198 Which of the following is not a factor that would limit the growth of a population? 5 519 Recommended Questions Food shortage, Immigration... 2 Edit Delete
13197 The biological community can have 5 519 Recommended Questions An isolated population of plants which doesn't depend on animals and microbes, An isolated population of animals which doesn't depend on plants and microbes... 4 Edit Delete
13196 Population growth of a species is not related to which of the following parameters? 5 519 Recommended Questions Nt + 1 = Nt + [(B + I) - (D + E)], Out of the four basic processes effecting population growth three leads to increase in population size... 2 Edit Delete
13195 A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is 5 519 Recommended Questions 10, 15... 4 Edit Delete
13194 Which of the following pairs is wrongly matched while remaining three are correct 5 519 Recommended Questions Allen's rule – Mammals with shorter ears and limbs in colder area, Expanding population – High number of individual at pre-reproductive stage... 3 Edit Delete
13193 Population density will increase if 5 519 Recommended Questions Number of births and number of deaths increase., Number of births and number of immigrants is high.... 2 Edit Delete
13192 The density of a population in a given habitat during a given period, fluctuates due to changes in four basic processes. On this basis fill up A and B boxes in the given diagram with correct options: 5 519 Recommended Questions A = Natality + Immigration, B = Mortality + Emigration, A = Natality + Mortality, B = Immigration + Emigration... 1 Edit Delete
13191 The four levels of biological organization to which Ecology is basically concerned are: 5 519 Recommended Questions Macromolecules-tissues-populations-biome, Macromolecules-organisms-population-biome... 4 Edit Delete
13190 An association of individuals of different species living in the same habitat and having functional interactions is. 5 519 Recommended Questions ecological niche, biotic community... 2 Edit Delete
13189 How many of the above statements is/are wrong? 5 519 Recommended Questions Three, Two... 1 Edit Delete
13188 Identify the biome that is not correctly matched with the physical parameters given in corresponding Column II and Column III: 5 519 Recommended Questions Tropical forest: Mean annual temperature 20-25°C, Mean annual precipitation 130-430 cm, Arctic and alpine tundra: Mean annual temperature -12-2°C, Mean annual precipitation 10-125 cm... 3 Edit Delete
13187 Physiological ecology 5 519 Recommended Questions works at the organismic level, Tries to understand the adaptation with respect to survival only... 1 Edit Delete
13186 Find the odd one out about levels of biological organization:- 5 519 Recommended Questions Biome, Community... 3 Edit Delete
13185 Niche is: 5 519 Recommended Questions All the biological factors in the organism environment, The physical space where an organism lives... 4 Edit Delete
13184 A wide variety of habitats within a biome can be a result of 5 519 Recommended Questions Regional variation of temperature and precipitation., Local variation of temperature and precipitation... 3 Edit Delete
13183 In the given figure, identify Coniferous forest, Arctic and Alpine Tundra and tropical forest, respectively: 5 519 Recommended Questions I, VI and III, V, VI and III... 2 Edit Delete
13182 Birth rate = B Death Rate = D Emigration = E Immigration = I Column-I A. Population is stable B. Population is increasing C. Population is decreasing Column-II I. B + I > D + E II. B + I = D + E III. B + I < D + E IV. B + E > D + I 5 519 Recommended Questions A - II, B - I, C - III, A - II, B - IV, C - III... 1 Edit Delete
13181 Ecology explains us:- 5 519 Recommended Questions How organisms, while remaining as an individual interact with other organisms, How organisms, interact with physical habitats as a group... 4 Edit Delete
13180 Autogamy can occur in a chasmogamous flower if 5 514 Recommended Questions pollen matures before maturity of ovule, ovules mature before maturity of pollen... 3 Edit Delete
13179 A dicotyledonous plant bears flowers, but never produces fruits and seeds. The most probable cause for the above situation is 5 514 Recommended Questions plant is dioecious and bears only pistillate flowers, plant is dioecious and bears both pistillate and staminate flowers... 4 Edit Delete
13178 Which of the following statements is false? 5 514 Recommended Questions All, None... 3 Edit Delete
13177 Choose the correct option with respect to the function of the germ pore. 5 514 Recommended Questions It allows growth of pollen tube, It allows water absorption in seed... 1 Edit Delete
13176 Female flowers remain submerged in water and the pollen grains are released inside the water in: 5 514 Recommended Questions Sea grasses, Vallisneria... 1 Edit Delete
13175 Pollination by water is 5 514 Recommended Questions Limited to about 30 families of dicots, Very common in flowering plants... 3 Edit Delete
13174 Most of the aquatic and land plants are pollinated by 5 514 Recommended Questions Insects or wind, Water and insects respectively... 1 Edit Delete
13173 Genetic self-incompatibility tends to increase 5 514 Recommended Questions pollen dispersal, inbreeding... 4 Edit Delete
13172 Dioecy in plants prevents: 5 514 Recommended Questions Autogamy but not geitonogamy, Geitonogamy but not autogamy... 3 Edit Delete
13171 Male and female plants are not separate in case of 5 514 Recommended Questions Papaya and date-palm, Mulberry and papaya... 4 Edit Delete
13170 Long filamentous threads protruding at the end of a young cob of maize are: 5 514 Recommended Questions anthers, styles... 2 Edit Delete
13169 Hydrophily is limited to 30 genera which are mostly 5 514 Recommended Questions Gymnosperms, Monocots... 2 Edit Delete
13168 What type of pollination takes place in Vallisneria? 5 514 Recommended Questions Pollination occurs in submerged conditions by water., Flowers emerge above the surface of water and pollination occurs by insects.... 4 Edit Delete
13167 Self-incompatibility: I. Is a device to prevent inbreeding II. Provides a biochemical block to self-fertilization. III. Ensures cross-fertilization. IV. Is governed by pollen-pistil interaction V. Is governed by series of multiple alleles. VI. Prevents self pollen (from the same flower or other flowers of the same plant) from fertilizing the ovules inhibiting pollen germination or pollen tube growth in the pistil. 5 514 Recommended Questions All are correct, All are wrong... 1 Edit Delete
13166 In which one of the following pollination is autogamous? 5 514 Recommended Questions Xenogamy, Chasmogamy... 3 Edit Delete
13165 When both male and female flowers are present on the same plant, then plant is said to be: 5 514 Recommended Questions Bisexual, Monoecious... 2 Edit Delete
13164 Wind pollinated flowers are 5 514 Recommended Questions small, brightly coloured, producing large number of pollen grains, small, producing large number of dry pollen grains... 2 Edit Delete
13163 If the female parent produces unisexual flower: 5 514 Recommended Questions Emasculation must be done before maturity, Emasculation must be done after maturity... 4 Edit Delete
13162 Choose the correct statement from the following: 5 514 Recommended Questions Cleistogamous flowers always exhibit autogamy, Chasmogamous flowers always exhibit geitonogamy... 1 Edit Delete
13161 A plant breeder employ technique of emasculation 5 514 Recommended Questions To cover the flower with a bag., To prevent self-pollination.... 2 Edit Delete
13160 Wind pollination is common in 5 514 Recommended Questions lilies, grasses... 2 Edit Delete
13159 Which of the following is the most common abiotic pollinating agent? 5 514 Recommended Questions Insects, Birds and bats... 3 Edit Delete
13158 Both, autogamy and geitonogamy are prevented in: 5 514 Recommended Questions Papaya, Cucumber... 1 Edit Delete
13157 Consider the following features seen in a plant: I. Male and female reproductive organs are generally found in separate flowers. II. The male flowers having a number of long filaments terminating in exposed stamens. III. The female flowers having long, feather-like stigmas. The flowers of this plant would most likely be pollinated by: 5 514 Recommended Questions Wind, Water... 1 Edit Delete
13156 Pollination in water hyacinth and water lily is brought about by the agency of 5 514 Recommended Questions water, insects or wind... 2 Edit Delete
13155 Which one of the following may require pollinators, but is genetically similar to autogamy? 5 514 Recommended Questions Geitonogamy, Xenogamy... 1 Edit Delete
13154 Which of the following is false about xenogamy? 1. It is the transfer of pollen grains from anther to stigma of another plant of the same species. 2. It produces genetic variation 3. It is genetically and ecologically (= functionally) cross pollination. 4. It occurs in cleistogamous flowers 5 514 Recommended Questions It is the transfer of pollen grains from anther to stigma of another plant of the same species., It produces genetic variation... 4 Edit Delete
13153 Pollen grains are shed at which stage? 5 514 Recommended Questions 2 celled, 3 celled... 3 Edit Delete
13152 The only type of pollination that brings genetically different types of pollen grains to the stigma is: 5 514 Recommended Questions Chasmogamy, Cleistogamy... 4 Edit Delete
13151 Genetically and functionally self-pollination is cent percent ensured with seed formation even in the absence of pollinators by 5 514 Recommended Questions Bisexuality, Dicliny... 4 Edit Delete
13150 In which one of the following, both autogamy and geitonogamy are prevented? 5 514 Recommended Questions Wheat, Papaya... 2 Edit Delete
13149 Which of the following are the important floral rewards to the animal pollinators? 5 514 Recommended Questions Colour and large size of flower, Nectar and pollen grains... 2 Edit Delete
13148 Go through the following statements: Flowers are bisexual and homogamous maturing anther and stigma of a flower at the same time. Mechanical devices bringing anthers and stigma close together in a bisexual chasmogamous flower. Cleistogamy (bisexual flowers remain closed) Anther and stigma of an intersexual flower mature in bud condition. The above contrivances favour: 5 514 Recommended Questions Allogamy, Autogamy... 2 Edit Delete
13147 Geitonogamy involves 5 514 Recommended Questions Pollination of a flower by the pollen from another flower of the same plant, Pollination of a flower by the pollen from the same flower... 1 Edit Delete
13146 Advantage of cleistogamy is: 5 514 Recommended Questions More vigorous offspring, No dependence of pollinator... 2 Edit Delete
13145 For artificial hybridisation experiment in bisexual flower, which of the sequences is correct? 5 514 Recommended Questions Bagging → Emasculation → Cross pollination → Rebagging, Emasculation → Bagging → Cross pollination → Rebagging... 2 Edit Delete
13144 Find out the correct option: (1) Among animals, insects, particularly bees are the dominant biotic pollinating agents (2) Often flowers of animal-pollinated plants are specially adapted for particular species of animals (3) In some species floral rewards like edible nectar, pollen grains, shelter for egg laying are given to pollinating animals (4) All the above are correct 5 514 Recommended Questions Among animals, insects, particularly bees are the dominant biotic pollinating agents, Often flowers of animal-pollinated plants are specially adapted for particular species of animals... 4 Edit Delete
13143 Select the option in which both organisms cannot complete their life cycle without each other 5 514 Recommended Questions Snake – Santalum, Ficus – Bats... 3 Edit Delete
13142 Which of the following plants produce(s) chasmogamous and cleistogamous flowers? 5 514 Recommended Questions Viola (Commonpansy), Oxalis... 4 Edit Delete
13141 From the statements given below choose the option that is true for a typical female gametophyte. 5 514 Recommended Questions (i) and (iv), (ii) and (iii)... 3 Edit Delete
13140 In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be 5 514 Recommended Questions haploid, diploid... 2 Edit Delete
13139 The micropylar end of Polygonum type of embryosac has the following structural cells, except 5 514 Recommended Questions Definitive nucleus, Synergid... 1 Edit Delete
13138 How many of the nuclei in the female gametophyte in angiosperms are surrounded by cell wall? 5 514 Recommended Questions 5, 6... 2 Edit Delete
13137 What does the filiform apparatus do at the entrance into ovule? 5 514 Recommended Questions It helps in the entry of pollen tube into a synergid, It prevents entry of more than one pollen tube into the embryo sac... 1 Edit Delete
13136 From the statements given below choose the option that are not true for a typical female gametophyte of a flowering plant: (i) It is 8-nucleate and 7-celled at maturity (ii) It is cellular during the development (iii) It is situated inside the nucellus (iv) It has an egg apparatus situated at the chalazal end 5 514 Recommended Questions i and iv, ii and iii... 4 Edit Delete
13135 What is the correct sequence of the formation of female gametophyte in angiosperms? 5 514 Recommended Questions Nucellus, megaspore tetrad, megaspore mother cell, megaspore, female gametophyte, Megaspore tetrad, nucellus, megaspore mother cell, megaspore, female gametophyte... 3 Edit Delete
13134 Egg apparatus consists of 5 514 Recommended Questions Central cell + egg cell, Synergids + polar nuclei + egg cell... 3 Edit Delete
13133 In the monosporic embryo sac of a flowering plant, the number of nuclei that get surrounded by cell walls and thus are organized into cells is: 5 514 Recommended Questions 5, 6... 2 Edit Delete
13132 The egg apparatus is made up of two _______ and one _______ at the _______ end of the embryo sac. 5 514 Recommended Questions antipodals, egg cell, micropylar, synergids, egg cell, chalazal... 4 Edit Delete
13131 The number of mitotic generations required to form a mature embryo sac from megaspore in most of the flowering plants is 5 514 Recommended Questions One, Two... 3 Edit Delete
13130 The gynoecium consists of many free pistils in flowers of: 5 514 Recommended Questions Aloe, Tomato... 4 Edit Delete
13129 In majority of angiosperms 5 514 Recommended Questions egg has a filiform apparatus, there are numerous antipodal cells... 3 Edit Delete
13128 Functional megaspore in an angiosperm develops into 5 514 Recommended Questions ovule, endosperm... 3 Edit Delete
13127 Which is the most common type of embryo sac in angiosperms? 5 514 Recommended Questions Tetrasporic with one mitotic stage of division, Monosporic with three sequential mitotic divisions... 2 Edit Delete
13126 Megaspore mother cell differentiates from 5 514 Recommended Questions Nucellus in the micropylar region., Nucellus in the chalazal region.... 1 Edit Delete
13125 Functional megaspore in Polygonum divides by free nuclear mitotic divisions and develops into 8 nucleated and 7 celled female gametophytes. The largest cell of this gametophyte is 5 514 Recommended Questions Antipodal cell, Central cell... 2 Edit Delete
13124 Largest cell in embryo sac of angiosperm is 5 514 Recommended Questions Synergid cell, Egg... 4 Edit Delete
13123 Embryo sac is 5 514 Recommended Questions megaspore, microgametophyte... 3 Edit Delete
13122 Which one of the following statements regarding post-fertilization development in flowering plants is incorrect? 5 514 Recommended Questions Ovules develop into an embryo sac, Ovary develops into fruit... 1 Edit Delete
13121 Match the following: 1 Male gametophyte I Embryo sac 2 Female gametophyte II Ovule 3 Megasporangium III Pollen grains 4 Microsporangium IV Pollen sacs 5 514 Recommended Questions 1-III; 2-I; 3-II; 4-IV, 1-I; 2-II; 3-III; 4-IV... 1 Edit Delete
13120 Which one of the following statements is not true? 5 514 Recommended Questions Filiform apparatus present at the chalazal end of the synergies guides the entry of pollen tube, Pollen - pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen... 1 Edit Delete
13119 Choose the correct match with respect to angiosperm 5 514 Recommended Questions Microsporanigum - ovule; Megasporangium - female gametophyte, Megasporangium - ovule; Embryo sac - female gametophyte... 2 Edit Delete
13118 In Polygonum type of embryo sac, polar nuclei 5 514 Recommended Questions Are haploid, Can serve as a precursor of PEN... 4 Edit Delete
13117 Which among the following is not a feature of pistil? 5 514 Recommended Questions Monocarpellary, Syncarpous... 3 Edit Delete
13116 In angiosperms, microsporogenesis and megasporogenesis 5 514 Recommended Questions occur in anther, form gametes without further divisions... 3 Edit Delete
13115 Formation of embryo sac from a single megaspore nuclei is termed as 5 514 Recommended Questions Bishopric development, Monosporic development... 2 Edit Delete
13114 Filiform apparatus is characteristic feature of 5 514 Recommended Questions generative cell, nucellar embryo... 4 Edit Delete
13113 The normal type of embryo sac is 8-nucleated and 5 514 Recommended Questions 8-celled, 7-celled... 2 Edit Delete
13112 Starting from the innermost part, the correct sequence of parts in an ovule is 5 514 Recommended Questions egg, nucellus, embryosac, integument, egg, embryosac, nucellus, integument... 2 Edit Delete
13111 From among the sets of terms given below, identify those that are associated with the gynoecium: 5 514 Recommended Questions Stigma, ovule, embryo sac, placenta, Thalamus, pistil, style, ovule... 1 Edit Delete
13110 Mark the wrong statement regarding egg apparatus 5 514 Recommended Questions It is seven celled, It is found at the micropylar end of the ovule... 1 Edit Delete
13109 Gynoecium of Michelia and Papaver is similar in being 5 514 Recommended Questions Apocarpous, Syncarpous... 4 Edit Delete
13108 Ovule generally differentiate a single ____ in the _____ region of the nucellus. 5 514 Recommended Questions Megaspore mother cell, micropylar, Megaspore, micropylar... 1 Edit Delete
13107 The ovule of an angiosperm is technically equivalent to 5 514 Recommended Questions megasporangium, megasporophyll... 1 Edit Delete
13106 Hilum represents the junction between 5 514 Recommended Questions Funicle and nucellus, Ovule and funicle... 2 Edit Delete
13105 Find incorrect statement: 5 514 Recommended Questions A polycarpellary, apocarpous gynoecium is found in Michelia, Many ovules are present in an ovary of papaya and orchids... 4 Edit Delete
13104 The pistil of Papaver is: 5 514 Recommended Questions Monocarpellary, Multicarpellary apocarpous... 3 Edit Delete
13103 Which one of the following statement is false in respect of flowering plants? 5 514 Recommended Questions Parthenocarpy can be induced through the application of growth hormones, Integuments encircle the ovule except at the tip where a small opening called the germ pore is organized... 3 Edit Delete
13102 Recognise the diagram and choose the correct option: 5 514 Recommended Questions Hibiscus, multicarpellary syncarpous pistil, Multicarpellary syncarpous pistil of papaver... 3 Edit Delete
13101 Identify A, B, C and D structures shown in above diagram of female gametophyte: 5 514 Recommended Questions Synergid, Polar nuclei, Central cell, Antipodal cells, Antipodal cells, Polar nuclei, Central cell, Synergids... 1 Edit Delete
13100 The stalk by which an ovule is attached to the placenta is called 5 514 Recommended Questions Funicle, Hilum... 1 Edit Delete
13099 A, B, C, D in the following diagram respectively are: 5 514 Recommended Questions Hilum, funicle, inner integument, micropyle, Hilum, funicle, outer integument, micropyle... 3 Edit Delete
13098 Match the Column-I with Column-II: Column-I A. Funicle B. Hilum C. Integument D. Chalaza E. Nucellus Column-II I. Mass of cells within ovule with more food II. Basal part of ovule III. One or 2 protective layers of ovule IV. Region where body of ovule fuses with funicle V. Stalk of ovule 5 514 Recommended Questions A - I, B - II, C - III, D - IV, E - V, A - V, B - IV, C - III, D - II, E - I... 2 Edit Delete
13097 Which among the following is not a wall layer of microsporangium? 5 514 Recommended Questions Endothecium, Nucellus... 2 Edit Delete
13096 A: Pollen grains carry the male gamete from microsporangium to micropyle of ovule in angiosperms. B: Pollen grain itself a male gamete further divides and form another one on stigma only. 5 514 Recommended Questions Both A and B are correct, A is correct only... 4 Edit Delete
13095 Most abundant/common type of pollen tetrad is _______ and it is formed due to _______ cytokinesis. 5 514 Recommended Questions Tetrahedral, successive, Tetrahedral, simultaneous... 2 Edit Delete
13094 Read the following statements carefully and select the correct a. Tapetum cells possess dense cytoplasm and generally have more than one nucleus b. Sporopollenin is absent in the areas called germ pore c. Generative cell is small, spindle shaped with a irregularly shaped nuclei d. Spindle of first mitosis in pollen is asymmetric 5 514 Recommended Questions a,b,c & d, a,b & c... 4 Edit Delete
13093 How many statement(s) is/are correct for pollen grains? a. Parthenium is a cause of bronchial afflictions b. Intine exhibits fascinating array of patterns and designs c. Cytoplasm of pollen grain is surrounded by spermoderm d. Generative cell is present when pollens are shed in 40 percent plants. 5 514 Recommended Questions One, Two... 1 Edit Delete
13092 Male gametes in angiosperms are formed by the division of: 5 514 Recommended Questions microspore, generative cell... 2 Edit Delete
13091 In what percent of angiosperms are the pollen grains shed at three cell stage? 5 514 Recommended Questions 20, 40... 2 Edit Delete
13090 The cell in the pollen grain which is responsible for giving rise to male gamete is 5 514 Recommended Questions Rod shaped with dense cytoplasm, Of smaller size and float in the cytoplasm... 2 Edit Delete
13089 In the following figure identify the parts labeled as A and B and select the option stating true features of them. 5 514 Recommended Questions Forms gametes, Smaller in size, Stores food reserve, Irregular shaped nucleus... 3 Edit Delete
13088 Arrange the following stages of microspore development into pollen grain, in correct sequence 5 514 Recommended Questions b, c, d, and a, b, d, a and c... 2 Edit Delete
13087 Find the incorrect statements with respect to pollen grain in angiosperms plants a. Germ pores are areas in pollen wall where intine and sporopollenin are absent b. The vegetative cell is bigger, has abundant food reserves, and a large irregularly shaped nucleus c. The fascinating array of patterns and designs are exhibited by exine wall d. In over 60 percent of angiosperms, pollen grains are shed at 3-celled stage 5 514 Recommended Questions c and d, a and d... 2 Edit Delete
13086 Following are four statements find out correct statements (i) Microsporangia has four layers, outer three are protective and inner one is nutritive (ii) Each cell of sporogenous tissue within microsporangia is capable of giving rise to a microspore tetrad. (iii) Dehydration of anther is important for separation of pollen grains in a tetrad. (iv) Generative cell in pollen grain is small with respect to vegetative cell and it floats in cytoplasm of vegetative cell. 5 514 Recommended Questions All are correct, Only (i), (ii) and (iii) is correct... 1 Edit Delete
13085 Pollen grains lose viability within 30 minutes of their release in the members of family 5 514 Recommended Questions Rosaceae, Solanaceae... 3 Edit Delete
13084 The above diagram shows some stages in microgametogenesis. Identify A, B and C: 5 514 Recommended Questions A: Symmetric spindle, B: Generative cell, C: Vegetative cell, A: Symmetric spindle, B: Vegetative cell, C: Generative cell... 3 Edit Delete
13083 The pollen grain represents 5 514 Recommended Questions Male gamete, Male gametophyte... 2 Edit Delete
13082 Mark the wrongly matched pair 5 514 Recommended Questions Amaranthus - Causes pollen allergy, Pollen banks - Store pollen at -196°C... 3 Edit Delete
13081 Which one of the following statements is not true? 5 514 Recommended Questions Pollen grains are rich in nutrients and they are used in the form of tablets and syrups, Pollen grains of some plants cause severe allergies and bronchial afflictions in some people... 4 Edit Delete
13080 The inner wall of pollen grain: 5 514 Recommended Questions Is thin, continuous and pecto-cellulosic and is called intine, Comes out in the form of pollen tube through germpore... 4 Edit Delete
13079 Which of the following statement is not correct for pollen grain? 1. It represents male gametophyte. 2. It is a spherical structure, about 25-50 micrometers in diameter. 3. Pollen grains are rich in nutrients. 4. In family rosaceae, leguminoseae and solanaceae pollen lose viability in 30 minute. 5 514 Recommended Questions 1 (2 %), 2 (5 %)... 4 Edit Delete
13078 What is the most common shape and size of pollen grain in angiosperms plants? 5 514 Recommended Questions Spindle-shaped, 25-50 μm, Spherical, 2-5 μm... 3 Edit Delete
13077 Identify A, B and X: X contains two cells - A and B. B is bigger than A, it has abundant food reserve and large irregularly shaped nucleus. A is small and floats in the cytoplasm of B. It is spindle shaped with dense cytoplasm and nucleus. 5 514 Recommended Questions A: Vegetative cell, B: Generative cell, X: Pollen grain, A: Generative cell, B: Vegetative cell, X: Pollen grain... 2 Edit Delete
13076 The intine of the pollen grain is a: 5 514 Recommended Questions Thick and discontinuous layer made of sporopollenin, Thick and continuous layer made of sporopollenin... 4 Edit Delete
13075 Male gametophyte in angiosperms produces 5 514 Recommended Questions two sperms and a vegetative cell, single sperm and a vegetative cell... 1 Edit Delete
13074 Which is an incorrect statement? I. Each cell of sporogenous tissue in anther is capable of giving rise to microspore tetrad. II. The pollen grain represent male gametophyte III. Pollen grains are usually triangular and 10-15 um in diameter. IV. Sporopollenin is one of the most resistant organic materials which can be destroyed only by strong acids and alkali. 5 514 Recommended Questions I, II are incorrect but III, IV are correct, III, IV are incorrect but I, II are correct... 2 Edit Delete
13073 The pollen grains are shed at two-celled stage in 5 514 Recommended Questions 80% angiosperms, 40% angiosperms... 4 Edit Delete
13072 Which one of the most common embryo sac in flowering plant? 5 514 Recommended Questions Monosporic, 8 nucleated and 7 celled, Monosporic, 7 celled and 7 nucleated... 1 Edit Delete
13071 Pollen tablets are available in the market for 5 514 Recommended Questions In vitro fertilisation, breeding programmes... 3 Edit Delete
13070 Which among the following is not true about pollen grain? 5 514 Recommended Questions Rich in nutrients., Many species cause severe allergies and bronchial afflictions in some people often leading to chronic respiratory disorders– asthma, bronchitis, etc.... 4 Edit Delete
13069 Pollen grains can be stored for several years in liquid nitrogen having a temperature of: 5 514 Recommended Questions -120 °C, -80 °C... 3 Edit Delete
13068 Which of the following has the least pollen viability? 5 514 Recommended Questions Cereals like wheat and rice, Members of Rosaceae... 1 Edit Delete
13067 Fossilization of pollen grains is helped by 5 514 Recommended Questions Compatible protein, Sporopollenin... 2 Edit Delete
13066 Which one of the following is resistant to enzyme action? 5 514 Recommended Questions Cork, Wood fibre... 3 Edit Delete
13065 The viability of pollen grains depends upon: 5 514 Recommended Questions Prevailing temperature, Prevailing humidity... 4 Edit Delete
13064 An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is 5 514 Recommended Questions cuticle, sporopollenin... 2 Edit Delete
13063 The pollen grains of rice and wheat lose their viability in ___ minutes of their release. 5 514 Recommended Questions 30, 10... 1 Edit Delete
13062 Pollen grains are able to withstand extremes of temperature and dessication because their exine is composed of 5 514 Recommended Questions cutin, suberin... 3 Edit Delete
13061 The outermost and innermost wall layers of microsporangium in an anther are respectively. 5 514 Recommended Questions Endothecium and tapetum, Epidermis and endodermis... 4 Edit Delete
13060 During microsporogenesis, meiosis occurs in 5 514 Recommended Questions endothecium, microspore mother cells... 2 Edit Delete
13059 What is the number of microsporangia in each lobe of an angiosperm anther? 5 514 Recommended Questions Four, Two... 2 Edit Delete
13058 Complete the below given schematic representation by choosing the correct option. 5 514 Recommended Questions Mitosis Microspore tetrad Meiosis, Mitosis Pollen grain Meiosis... 4 Edit Delete
13057 During microsporogenesis 5 514 Recommended Questions Microspore tetrad is developed by meiosis in sporogenous tissue, Pollen grains are developed by mitosis in sporogenous tissue... 1 Edit Delete
13056 Read the statements and select option representing correct statements with respect to stamen. A. The distal end of filament is attached to thalamus. B. A typical anther is dithecous and bisporangiate. C. Connective is sterile vasculated tissue. D. Microsporangia develop further and become pollen sacs. 5 514 Recommended Questions A & B, A & C... 4 Edit Delete
13055 Which among the following extend longitudinally to become pollen sac? 5 514 Recommended Questions Microsporangia, Filament of anther... 1 Edit Delete
13054 The layers in the walls of the microsporangium that helps in the dehiscence of anther to release the pollen include: 5 514 Recommended Questions I and II only, I, II, and III only... 2 Edit Delete
13053 All of the following statements are correct except: 5 514 Recommended Questions The proximal end of the filament is attached to the thalamus or the petal of the flower., The anther is a four-sided structure consisting of four microsporangia, two in each lobe.... 4 Edit Delete
13052 Which among the following is incorrect with respect to microsporogenesis? 5 514 Recommended Questions The cells of the sporogenous tissue undergo mitotic divisions to form microspore tetrads., Each cell of the sporogenous tissue is capable of giving rise to a microspore tetrad. Each one is a potential pollen or microspore mother cell (PMC).... 1 Edit Delete
13051 Four statements are given below. How many of them are correct? (1) The anther is a tetragonal structure, with four microsporangia at corners, two in each lobe. (2) Microsporangia develops further and becomes a pollen sacs. (3) A typical microsporangia is surrounded by four layered wall, 3-protective and 1 nutritional. (4) The nutritive layer is densely cytoplasmic with more than one nucleus 5 514 Recommended Questions 3, 4... 2 Edit Delete
13050 Match the following: 1. Sporogenous tissue I Process of formation of microspores from PMC by meiosis 2. Microspore tetrad II Microspores arranged in cluster of four cells 3. Microsporogenesis III Formation of microspore tetrad by meiosis 4. Tapetum IV Nourishes pollen grains 5 514 Recommended Questions 1-III; 2-I; 3-II; 4-IV, 1-III; 2-II; 3-I; 4-IV... 2 Edit Delete
13049 Mark the incorrect statement 5 514 Recommended Questions Outer three layers of anther wall are protective in function, Sporogenous tissue occupies the centre of each microsporangium... 3 Edit Delete
13048 Examine the figure given below and select the right option giving all the four parts a, b, c and d. Correctly identify 5 514 Recommended Questions Endothecium, Tapetum, Microspore mother cell, Middle layer, Tapetum, Endothecium, Microspore mother cell, Middle layer... 3 Edit Delete
13047 Which of the following has proved helpful in preserving pollens as fossils? 5 514 Recommended Questions Pollen kit, Cellulosic intine... 4 Edit Delete
13046 The following is the diagram of T.S. of anther. Identify the parts labelled A, B and C. 5 514 Recommended Questions A - Connective tissue, B - Pollen grains, C - Endothecium, A - Endothecium, B - Connective tissue, C - Pollen grains... 1 Edit Delete
13045 Microsporangium is generally surrounded by 4 wall layers. Which of the following 3 wall layers perform the function of protection and help in the dehiscence of anther to release the pollen? 5 514 Recommended Questions Epidermis, tapetum, endothecium, Epidermis, aril, endothecium... 4 Edit Delete
13044 Which among the following statement is incorrect with respect to tapetum? 5 514 Recommended Questions It nourishes developing pollen grains., It has dense cytoplasm.... 4 Edit Delete
13043 When anther is young a group of compactly arranged homogenous cells are present in centre it is known as 5 514 Recommended Questions Sporogenous tissue, Potential pollen mother cell... 3 Edit Delete
13042 What is the characteristic of tapetum? 5 514 Recommended Questions It does not store food., It is multi-nucleated.... 2 Edit Delete
13041 A typical anther shows a. Two lobes with two theca each b. Each lobe as dithecous c. All cells in a given microsporangium as potential PMC d. Thousands of microspores per microsporangium Out of these statements: 5 514 Recommended Questions b is incorrect, a and b are correct... 4 Edit Delete
13040 A typical anther is (a) Tetrasporangiate (b) Tetragonal (c) Trilobed (d) Surrounded by four wall layers The correct ones are 5 514 Recommended Questions Only (a), (b) and (d), Only (a) and (d)... 1 Edit Delete
13039 A typical angiosperm anther is dithecous which means that it is: 5 514 Recommended Questions One lobed and the lobe has two theca, Two lobed and each lobe has two theca... 2 Edit Delete
13038 Match the column with respect to pollen grain: Column I a) Vegetative Cell Nucleus b) Germ Pore c) Exine Column II (i) Abundant Reserve Food & Irregular Nucleus (ii) Spindle shaped with dense cytoplasm (iii) Where the Sporopollenin is absent (iv) Variable Pattern & design (v) Continuous layer made up of Cellulose & pectin 5 514 Recommended Questions a(iv), b(v), c(iii), a(i), b(iii), c(v)... 3 Edit Delete
13037 The cells of which of the following layers of the anther wall are multinucleated due to endomitosis? 5 514 Recommended Questions Epidemis, Endothecium... 4 Edit Delete
13036 Which of the following statement is not associated with phenomenon of flowering? 5 514 Recommended Questions Decision for flowering takes place much before actual flower appears., During flowering several structural and hormonal changes takes place... 4 Edit Delete
13035 A typical angiosperm anther is bilobed with each lobe having two theca i.e. dithecous. Theca is separated often by: 5 514 Recommended Questions A longitudinal groove running lengthwise., A longitudinal groove running breadth wise.... 1 Edit Delete
13034 In a stamen proximal end of filament is attached to 5 514 Recommended Questions Anther., Thalamus or petals.... 2 Edit Delete
13033 The following figure represents: 5 514 Recommended Questions Transverse section of young anther, 3-D cut section of mature anther... 1 Edit Delete
13032 Which one of the following statements is not true? 5 514 Recommended Questions Exine of pollen grains is made up of sporopollenin, Pollen grains of many species cause severe allergies... 4 Edit Delete
13031 The anther wall layer which is usually polyploid and has dense cytoplasm as well as high DNA content is 5 514 Recommended Questions Endothelium, Tapetum... 2 Edit Delete
13030 122 5 513 Recommended Questions 1, 2... 1 Edit Delete
13029 Most vital event of sexual reproduction is 5 513 Recommended Questions Embryogenesis, Essential for the fusion of gametes... 2 Edit Delete
13028 Gametes are haploid. It signifies that 5 513 Recommended Questions They cannot be formed without meiosis, They always have half the number of chromosomes than that of main plant body... 3 Edit Delete
13027 Gamete formation always occurs in (i) Sexual reproduction. (ii) Asexual reproduction. (iii) Parthenogenesis. 5 513 Recommended Questions (i) only, (i), (ii), (iii)... 3 Edit Delete
13026 With respect to external fertilization, which of the following is not an advantage of internal fertilization? 5 513 Recommended Questions A decreased risk of disease transmission, Minimal waste of gametes... 1 Edit Delete
13025 In angiosperms plants, embryogenesis 5 513 Recommended Questions Refers to the process of development of zygote from embryo, Involves cell division and cell differentiation... 2 Edit Delete
13024 The most vital event of sexual reproduction is perhaps the fusion of gametes. This process called ________ results in the formation of a diploid ________. 5 513 Recommended Questions Syngamy, Zygote, Fertilization, Zygote... 4 Edit Delete
13023 Statement A - In seed plants, both male and female gametes are non-motile. Statement B - In spermatophytes, pollen grains are the carrier of male gametes. 5 513 Recommended Questions Only statement A is correct., Only statement B is correct.... 4 Edit Delete
13022 Many mammals, especially in natural, wild conditions are: 5 513 Recommended Questions Continuous breeders, Seasonal breeders... 2 Edit Delete
13021 Mark the odd one (with respect to zygote) 5 513 Recommended Questions Formed in the water or inside the body of the organism, Develops a thick wall in all organisms... 2 Edit Delete
13020 The number of chromosomes in a meiocyte of the fruit fly is: 5 513 Recommended Questions 4, 8... 2 Edit Delete
13019 Read the following statements carefully a. Neelakuranji flowers once in 12 years b. In the majority of organisms, male and female gametes are motile c. During embryogenesis, the zygote undergoes mitosis and cell differentiation 5 513 Recommended Questions All are correct, Only (b) is incorrect... 2 Edit Delete
13018 With respect to organisms exhibiting internal fertilization, organisms exhibiting external fertilization show: 5 513 Recommended Questions More variations, Great synchrony between sexes... 2 Edit Delete
13017 Monoecious plant of Chara shows occurrence of 5 513 Recommended Questions antheridiophore and archegoniophore on the same plant, stamen and carpel on the same plant... 4 Edit Delete
13016 In animals exhibiting internal fertilization: 5 513 Recommended Questions There is high synchrony between the two sexes, The chances of desiccation of the embryo is high... 3 Edit Delete
13015 Which one of the following plant does not show dioecious condition:- 5 513 Recommended Questions Marchantia, Papaya... 4 Edit Delete
13014 Male and female flowers are present on same plant in all of these, except 5 513 Recommended Questions Cucurbits, Coconuts... 4 Edit Delete
13013 The most critical event in sexual reproduction is: 5 513 Recommended Questions Gametogenesis, Gamete transfer... 3 Edit Delete
13012 Parthenogenesis is the development of an organism directly from: 5 513 Recommended Questions Female gametes, Vegetative cells... 1 Edit Delete
13011 Algae and fungi resort to sexual reproduction because 5 513 Recommended Questions It is more rapid form of propagation, Zygote as with its thick wall make them able to withstand unfavourable conditions... 2 Edit Delete
13010 If the gametes are similar in their appearance they are called as 5 513 Recommended Questions Anisogametes, Isogametes... 4 Edit Delete
13009 Development of zygote into individuals of the new generation 5 513 Recommended Questions Depends on the type of life cycle the organism has and the environment to which has and the environment it is exposed to, Is independent of the environment to which the organism is exposed... 1 Edit Delete
13008 Identify gametes (A, B and C) respectively: 5 513 Recommended Questions Heterogametes, isogametes, Homogametes, Isogametes, homogametes, heterogametes... 4 Edit Delete
13007 Which of the following is false about internal fertilization? I. Male gamete is motile II. Male gametes are non-motile III. Male gametes are produced in large number IV. Male gametes are produced in small number V. There is a significant reduction in the number of eggs produce VI. In seeded plants non-motile male gametes are carried to female gamete by pollen tubes 5 513 Recommended Questions I, III, V, VI, III, IV... 3 Edit Delete
13006 Rotifers: 5 513 Recommended Questions Exhibit adult reproductive structures in juvenile phase, Are plants that can be both monoecious or dioecious... 4 Edit Delete
13005 Isogametes are seen in: 5 513 Recommended Questions Cladophora, Fucus... 1 Edit Delete
13004 Select the correct sequence of events. 5 513 Recommended Questions Gametogenesis → Gamete transfer → Syngamy → Zygote → Cell division (Cleavage) → Cell differentiation → Organogenesis, Gametogenesis → Gamete transfer → Syngamy → Zygote → Cell division (Cleavage) → Organogenesis → Cell differentiation... 1 Edit Delete
13003 Development of zygote taking place outside the body is called? 5 513 Recommended Questions Viviparous, Oviparous... 2 Edit Delete
13002 Small aquatic animals produce large number of gametes in surrounding water 5 513 Recommended Questions to enhance the chances of syngamy, to produce large number of offspring... 4 Edit Delete
13001 Match Column I with column II and select the correct option using the codes given below: 5 513 Recommended Questions A-4 B-3 C-2 D-1, A-2 B-1 C-4 D-3... 4 Edit Delete
13000 Examine the figure (A-D) given below and select the right option out of 1-4, in which all the four structures A, B, C, and D are identified correctly: 5 513 Recommended Questions A: Runner, B: Archegoniophore, C: Synergid, D: Antheridium, A: Offset, B: Antheridiophore, C: Antipodals, D: Oogonium... 2 Edit Delete
12999 Identify A and B 5 513 Recommended Questions A- Antheridium, B-Oogonium, A-Oogonium, B- Antheridium... 2 Edit Delete
12998 Identify A and B 5 513 Recommended Questions A-Archegoniphore, B-Anthediophore, A-Anthediophore, B-Archegoniphore... 1 Edit Delete
12997 In most of the aquatic algae, syngamy occurs in the external medium. In this condition 5 513 Recommended Questions Organism shows great synchrony between the sexes, The small number of gametes and produced... 1 Edit Delete
12996 Zoospore is 5 513 Recommended Questions Formed by the fusion of two gametes, Flagellated and motile structure... 2 Edit Delete
12995 Which structure provides surface for the settlement of pollen grains in angiosperm plants? 5 513 Recommended Questions Anther, Style... 3 Edit Delete
12994 Which are the various stages of sexual reproduction? 5 513 Recommended Questions Growth, Development, Differentiation, Pre fertilization, Fertilization, Post fertilization... 2 Edit Delete
12993 Reptiles and birds are: 5 513 Recommended Questions Oviparous, Viviparous... 1 Edit Delete
12992 Embryogenesis refers to the process of development of an embryo from the zygote. During embryogenesis in humans, zygote undergoes 5 513 Recommended Questions Mitosis, Cell differentiation... 4 Edit Delete
12991 Development of a new individual from a single gamete without fusion with another gamete is called 5 513 Recommended Questions Parthenocarpy, Sporophytic budding... 3 Edit Delete
12990 The most vital event of sexual reproduction is 5 513 Recommended Questions Fusion of gametes, Gamete formation... 1 Edit Delete
12989 ________ is formed just after fertilization. 5 513 Recommended Questions Morula, Blastula... 3 Edit Delete
12988 Select the correct sequence from the following: 5 513 Recommended Questions Gametogenesis → Syngamy → Zygote → Embryogenesis, Gametogenesis → Syngamy → Embryogenesis → Zygote... 1 Edit Delete
12987 Read the following statements Statement A: Reproduction enables continuity of the species, generation after generation Statement B: Zygote is the vital link that ensures continuity of species between organisms of one generation and the next. Choose the correct option. 5 513 Recommended Questions Both the statements are incorrect, Only statement A is correct... 4 Edit Delete
12986 In which of the following, gametes are released in the surrounding medium 5 513 Recommended Questions Fishes, Amphibians... 4 Edit Delete
12985 Which of the following structure represents vital link between two successive generations? 5 513 Recommended Questions Spore mother cell, Zygote... 2 Edit Delete
12984 I: Zoospores are the most common asexual reproductive structures in algae. II: Algae and fungi always require water for fertilization always. 5 513 Recommended Questions Both I & II are correct and II is the correct explanation of I, Both I & II are correct but the II is not the correct explanation of I... 3 Edit Delete
12983 Clear-cut vegetative, reproductive and senescent phase are not found in 5 513 Recommended Questions Annual plants, Biennial plants... 3 Edit Delete
12982 Natural parthenogenesis occur in 5 513 Recommended Questions Housefly, Drosophila... 3 Edit Delete
12981 Flowers are unisexual in? 5 513 Recommended Questions Pea, Cucumber... 2 Edit Delete
12980 All organisms have to reach a certain stage of growth and maturity in their life, before they can reproduce sexually. That period of growth 5 513 Recommended Questions Is called the juvenile phase, not vegetative phase, Is called the vegetative phase, not the juvenile phase... 3 Edit Delete
12979 When both male and female flowers are present on the same plant, then plant is said to be: 5 513 Recommended Questions Bisexual, Monoecious... 2 Edit Delete
12978 Identify the correctly matched pair: 5 513 Recommended Questions Asexual reproductive structure in Chlamydomonas - Zygospores, Vegetative propagule in Agave - Offset... 4 Edit Delete
12977 In the life span of which group of plants, vegetative, reproductive and senescent are clearly distinct? 5 513 Recommended Questions Annual plants, Biennial plants... 4 Edit Delete
12976 Juvenile phase or vegetative phase is related with all, except 5 513 Recommended Questions It is pre-reproductive phase in the life cycle of an individual, It is the period of growth... 4 Edit Delete
12975 In which set of organisms does external fertilization occur 5 513 Recommended Questions Echinodermata and mosses, Hemichordata and ferns... 3 Edit Delete
12974 Sexual reproduction in different animals involves formation of gametes by 5 513 Recommended Questions Same individual if hermaphrodite, By different individuals of the opposite sex... 4 Edit Delete
12973 "All organisms have to reach a certain stage of maturity and growth, before they can reproduce sexually". How many of the following is true for above statement? (I) It is known as juvenile phase. (II) It is known as vegetative phase in plants. (III) It is of different duration in different organisms. (IV) It is of same duration in different organisms. 5 513 Recommended Questions 4, 3... 2 Edit Delete
12972 Meiosis occurs in 5 513 Recommended Questions Megaspore, Meiocyte... 2 Edit Delete
12971 A: All organisms have to reach a certain stage of growth and maturity in their life, before they can reproduce sexually. B: Male and female gametes must be physically brought together to facilitate syngamy. 5 513 Recommended Questions A - correct B - incorrect, Both A and B are correct... 2 Edit Delete
12970 Select the odd one with respect to sexual reproduction. 5 513 Recommended Questions Can be uniparental or biparental, Is slow... 4 Edit Delete
12969 Every sexually reproducing organism, including human beings begin life as a _______ called zygote. 5 513 Recommended Questions Single cell, Double cell one from each parent... 1 Edit Delete
12968 Hermaphrodite animal is 5 513 Recommended Questions Leech, Spider... 1 Edit Delete
12967 In which of the following mammal Oestrus cycle is absent: 5 513 Recommended Questions Cow, Horse... 3 Edit Delete
12966 Which of the following statement is correct? 5 513 Recommended Questions Strobilanthus Kunthinan flowers once in 12 years, Formation of the diploid embryo is universal in all sexually reproducing organisms... 1 Edit Delete
12965 The females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts as well as hormones during the reproductive phase. In non-primate mammals it is known as 5 513 Recommended Questions Oestrus cycle, Menstrual cycle... 1 Edit Delete
12964 Birds like turkey undergo _______ to produce offspring. 5 513 Recommended Questions Sexual reproduction, Asexual reproduction... 3 Edit Delete
12963 Vegetative phase in plants is same as _________ in animal. 5 513 Recommended Questions Sexual phase, Juvenile phase... 2 Edit Delete
12962 Sexual reproduction is 5 513 Recommended Questions Fast and simple process, Slow and simple process... 4 Edit Delete
12961 Which one of the following generates new genetic combinations leading to variation? 5 513 Recommended Questions Vegetative reproduction, Parthenogenesis... 3 Edit Delete
12960 Product of sexual reproduction generally generates 5 513 Recommended Questions longer viability of seeds, prolonged dormancy... 3 Edit Delete
12959 Which of the following flowers only once in its lifetime? 5 513 Recommended Questions Bamboo species, Jackfruit... 1 Edit Delete
12958 Select incorrect statement with respect to life span. a. It is the period from the reproductive phase to the senescent phase. b. Life spans of organisms are not necessarily correlated with their sizes. c. No individual is immortal, whether single-celled or multi-celled. d. The life span of banana tree is 25 years. 5 513 Recommended Questions a & d, a & b... 3 Edit Delete
12957 These are two statements related to sexual reproduction: (I) In both plants and animals, hormones are responsible for the transitions between the three phases. (II) Interaction between hormones and certain environmental factors regulate the reproductive processes and the associated behavioural expressions of organisms. 5 513 Recommended Questions Both (I) and (II) is correct, Only (I) is correct... 1 Edit Delete
12956 Life span of an organism 5 513 Recommended Questions Does not include the phase of senescence, Is not necessarily correlated with body size of organism... 2 Edit Delete
12955 Mark the correct statement (with respect to reproduction) 5 513 Recommended Questions A biological process to produce new offsprings, Enables the continuity of the species, generation after generation... 4 Edit Delete
12954 Life span of parrot is 5 513 Recommended Questions 140 years, 60 years... 1 Edit Delete
12953 Some organisms are considered to be immortal such as 5 513 Recommended Questions Amoeba, Drosophila... 1 Edit Delete
12952 Which of the following is a false statement? 5 513 Recommended Questions All organisms have evolved similar mechanism to multiply and produce offsprings, Asexual reproduction is uniparental... 1 Edit Delete
12951 There are various types of reproduction. The type of reproduction adopted by an organism depends on: 5 513 Recommended Questions The habitat and morphology of the organism, Morphology of the organism... 4 Edit Delete
12950 In biological world each organism has evolved its own mechanism of reproduction, which depends upon? 1. Habitat 2. Internal physiology 3. Size of organism 4. Both 1 and 2 5 513 Recommended Questions 1, 2... 4 Edit Delete
12949 Find out the incorrect option: 5 513 Recommended Questions Bulbil-Agave, Rhizome-Ginger... 3 Edit Delete
12948 The whole plant can be developed vegetatively in Agave form a propagule like 5 513 Recommended Questions Rhizome, Corm... 4 Edit Delete
12947 Eichhornia crassipes 5 513 Recommended Questions Multiplies rapidly wherever there is running water, Propagates vegetatively with the help of suckers... 4 Edit Delete
12946 Common vegetative propagule, capable, of giving rise to new individuals in Agave is 5 513 Recommended Questions Leaf bud, Bulbil... 2 Edit Delete
12945 Water hyacinth is also known as 'terror of Bengal' because it 5 513 Recommended Questions Releases saxitoxin, Drains O₂ from the running water... 3 Edit Delete
12944 Rhizomes are commonly used in vegetative propagation of 5 513 Recommended Questions Water hyacinth, Bryophyllum... 3 Edit Delete
12943 Select the incorrect match with respect to vegetative propagules 5 513 Recommended Questions Eyes - potato, Rhizome - Ginger... 4 Edit Delete
12942 Match correctly with respect to mode of propagation 1. Adventitious bud - Potato tuber 2. Offset - Lotus 3. Seed - Cereal 4. Rhizome - Terror of Bengal 5 513 Recommended Questions 1 (48 %), 2 (11 %)... 3 Edit Delete
12941 Identify the correct match Column I 1. Grasses 2. potato 3. Crocus 4. Agave Column II - Runners - Rhizome - Tuber - Bulb 5 513 Recommended Questions 1, 2... 1 Edit Delete
12940 In vegetative propagation, when the _____ come in contact with damp soil or water, they produce roots and new plants. 5 513 Recommended Questions Shoot, Node... 2 Edit Delete
12939 Water hyacinth is one of the most invasive weeds primarily because: 5 513 Recommended Questions It gets adapted to any fresh water body easily, It produces secondary metabolites against herbivores... 3 Edit Delete
12938 Which type of stem modification is seen in banana? 5 513 Recommended Questions Stem tuber, Bulb... 4 Edit Delete
12937 Identify the labels A, B and C in the given diagram 5 513 Recommended Questions Tuber, Germinating eye bud, Eyes, Bulb, Node, Eyes... 1 Edit Delete
12936 Which one of the following statements is not correct? 5 513 Recommended Questions Offspring produced by asexual reproduction is called clone, Microscopic motile asexual reproductive structures are called zoospores... 3 Edit Delete
12935 Select the odd one with respect to asexual reproduction 5 513 Recommended Questions Need of both male and female parents, Produces a number of individuals... 1 Edit Delete
12934 Which among the following is immortal 5 513 Recommended Questions Sea algae, Amoeba... 2 Edit Delete
12933 Identify the structure 5 513 Recommended Questions Conidia, Penicillium... 1 Edit Delete
12932 Which of the following pairs is not correctly matched? 5 513 Recommended Questions a, b... 3 Edit Delete
12931 Binary fission is a type of 5 513 Recommended Questions Nuclear fragmentation, Vegetative propagation... 4 Edit Delete
12930 Term 'vegetative reproduction' is frequently used in 5 513 Recommended Questions Plants, Monerans... 1 Edit Delete
12929 Consider the following statements (a-d) about 'terror Bengal' a. An aquatic plant which can propagate vegetatively at a phenomenal rate b. One of the most invasive weeds growing in standing water c. It drains oxygen from water which leads to the death of fishes d. It was introduced in Bengal because of its beautiful flowers and shape of fruits Which of the above statements are correct? 5 513 Recommended Questions b & d, a & d... 4 Edit Delete
12928 Identify X 5 513 Recommended Questions Stem, Runner... 3 Edit Delete
12927 Select the incorrect match 5 513 Recommended Questions Penicillium - conidia, Chlamydomonas - Zoospore... 3 Edit Delete
12926 The vegetative propagule of Bryophyllum is: 5 513 Recommended Questions Bulbil, Leaf buds... 2 Edit Delete
12925 Gemmule formation is a common mode of asexual reproduction in 5 513 Recommended Questions Paramecium, Hydra... 3 Edit Delete
12924 Non-flagellate spores are called conidia. In which organism they are seen? 5 513 Recommended Questions Penicillium, Hydra... 1 Edit Delete
12923 Clones cannot be obtained from 5 513 Recommended Questions Rhizome, Tuber... 4 Edit Delete
12922 No individual is immortal except: 5 513 Recommended Questions Single celled organisms, Green plants... 1 Edit Delete
12921 Asexually produced organism inheriting all the character of parent is 5 513 Recommended Questions Offspring, Clone... 2 Edit Delete
12920 Leaves of which of the following plants are involved in vegetative reproduction? 5 513 Recommended Questions Opuntia, Potato... 3 Edit Delete
12919 Match column I with column II and select the correct option 5 513 Recommended Questions a(i), b(iv), c(iii), d(ii), a(i), b(iv), c(ii), d(iii)... 3 Edit Delete
12918 Individuals of a clone: 5 513 Recommended Questions Are genetically similar but morphologically different, Are morphologically similar but genetically different... 3 Edit Delete
12917 Asexual reproduction does not involve the formation of 5 513 Recommended Questions Buds, Zygote... 2 Edit Delete
12916 Select the incorrect match. 5 513 Recommended Questions Bacteria - Binary fission, Yeast - Budding... 4 Edit Delete
12915 Ginger is vegetatively propagated through: 5 513 Recommended Questions Rhizome, Bulbil... 1 Edit Delete
12914 In ginger vegetative propagation occurs through: 5 513 Recommended Questions rhizome, offsets... 1 Edit Delete
12913 Examine the figures A, B, C and D. in which one of the four options, all the labels for A, B, C and D are correct? 5 513 Recommended Questions Chlamydospore, Corm, Phylloclade, Zoosporangia, Conidia of Aspergillus, Onion bulb, Sucker, Chlamydospore... 3 Edit Delete
12912 An aquatic plant which is commonly known as 'Terror of Bengal', can propagate vegetative by ________ and its also called ________ 5 513 Recommended Questions Offsets, Water hyacinth, Offsets, Water lettuce... 1 Edit Delete
12911 Which of the following is not vegetative propagule? 5 513 Recommended Questions Rhizome and sucker, Tuber and offset... 4 Edit Delete
12910 Mark the mis-matched pair 5 513 Recommended Questions Polycarpic plants - Recovery phase, Offset - Water hyacinth... 3 Edit Delete
12909 What is true in the given figure? 5 513 Recommended Questions The plant concerned is Chara and A is Oogonium and B is Antheridium, The plant concerned is Chara and B is Oogonium and A is Antheridium... 1 Edit Delete
12908 Inhibitory substances in dormant seeds cannot be removed by subjecting seeds to: 5 512 Recommended Questions Gibberellic acid, Nitrate... 3 Edit Delete
12907 Plant growth promoters are not involved in 5 512 Recommended Questions Cell division, cell enlargement, Pattern formation, seed formation... 3 Edit Delete
12906 Which of the following is not a natural mean to remove seed coat? 5 512 Recommended Questions Microbial action, Passage through Digestive tract... 3 Edit Delete
12905 Which of the following is not an inhibitory substance governing seed dormancy? 5 512 Recommended Questions Abscisic acid, Phenolic acid... 4 Edit Delete
12904 How many of the following can help in breaking seed dormancy? 1. Changing the environmental condition like light & temperature. 2. Application of GA₃ or nitrates. 3. Chilling condition. 4. All the above 5 512 Recommended Questions 1, 2... 4 Edit Delete
12903 Read following statements and answer in suitable term given in option: a. The promotion of flowering by a period of low temperature b. Hormonal substance migrates from leaves to shoot for inducing flowering c. The general metabolic activity of the embryo slow down or in inactive state d. Formation of separation layer between tissue 5 512 Recommended Questions Photoperiodism, vernalisation, abscission layer, dormancy, Vernalisation, photoperiodism, dormancy, abscission layer... 2 Edit Delete
12902 Interfascicular cambium and cork cambium are formed due to 5 512 Recommended Questions Cell division, Cell differentiation... 3 Edit Delete
12901 The formation of interfascicular cambium in plants is due to: 5 512 Recommended Questions Non-differentiation, Re-differentiation... 4 Edit Delete
12900 Monocarpic plants are those which 5 512 Recommended Questions bear flowers with one ovary, flower once and die... 2 Edit Delete
12899 The spring varieties are normally planted in......and come to flower and produce grain...... 5 512 Recommended Questions Autumn season, after the end of growing season, Spring season, at the end of growing season... 3 Edit Delete
12898 What conditions are required for vernalisation in plants? 5 512 Recommended Questions Low temperature, CO₂., Low temperature, O₂, leaf.... 4 Edit Delete
12897 Vernalization is the process of 5 512 Recommended Questions flower induction by high temperature treatment, inhabitation of flowering by low temperature treatment... 4 Edit Delete
12896 Winter varieties resume their growth in 5 512 Recommended Questions Spring, Summer... 1 Edit Delete
12895 Which of the following does not has two kinds of varieties? 5 512 Recommended Questions Wheat, Radish... 2 Edit Delete
12894 Vernalisation prevents 5 512 Recommended Questions Precocious reproductive development late in growing season, Late reproductive development... 1 Edit Delete
12893 Winter varieties should be planted in 5 512 Recommended Questions Winter, Autumn... 2 Edit Delete
12892 Vernalisation stimulates flowering in 5 512 Recommended Questions Zamikand, Turmeric... 3 Edit Delete
12891 All the following plants are biennials except:- 5 512 Recommended Questions Sugarbeet, Cabbages... 4 Edit Delete
12890 Flowering can be affected in certain plants 5 512 Recommended Questions by quantitative exposure to low temperature, by qualitative exposure to low temperature... 3 Edit Delete
12889 The photoperiod in plants is perceived at 5 512 Recommended Questions meristem, flower... 4 Edit Delete
12888 With respect to photoperiodism, the short day plant, the long day plant and day neutral plant are represented respectively by: 5 512 Recommended Questions A, B and C, B, A and C... 2 Edit Delete
12887 Which of the following is the site for perception of light/dark in plants? 5 512 Recommended Questions Root apex, Shoot apex... 3 Edit Delete
12886 For the induction of flowering, some plants require a 5 512 Recommended Questions Periodic exposure to light, Continuous exposure to light... 1 Edit Delete
12885 Refer the given figures on photoperiodism and select the correct option. 5 512 Recommended Questions no correlation between light period and flowering, long light-exposure period, short light-exposure period, long light-exposure period, no correlation between light period and flowering, short light-exposure period... 3 Edit Delete
12884 A physiological response of plants to the duration of light and darkness is a: 5 512 Recommended Questions daily phase cycle, circadian rhythms... 4 Edit Delete
12883 Phototropism is firstly studied by 5 512 Recommended Questions Charles Darwin and his son Francis Darwin, Charles Darwin and his friend Francis Darwin... 1 Edit Delete
12882 When there is no such relation between exposure to light duration and induction of flowering response such plants are called 5 512 Recommended Questions Long day plants, Short day plants... 3 Edit Delete
12881 If a plant needs exposure of light more than a well defined critical period for flowering, it would be called as- 5 512 Recommended Questions Long day plants, Short day plants... 1 Edit Delete
12880 If a plant needs exposure of light less than a defined period for flowering, such plant is called 5 512 Recommended Questions Long day plants, Short day plants... 2 Edit Delete
12879 Match the Following: Column I A. IAA B. ABA C. Ethylene D. GA E. Cytokinin Column II 1. Herring sperm DNA. 2. Bolting 3. Stomatal closure 4. Weed-free lawns 5. Ripening of fruits. Codes 5 512 Recommended Questions A-4, B-3, C-5, D-2, E-1, A-5, B-3, C-4, D-2, E-1... 1 Edit Delete
12878 The term synergistic action of hormones refers to 5 512 Recommended Questions When two hormones act together but bring about opposite effects., When two Hormones act together and contribute to the same function.... 2 Edit Delete
12877 ABA acts as antagonistic to 5 512 Recommended Questions ethylene, cytokinin... 3 Edit Delete
12876 Bud dormancy is induced by:- 5 512 Recommended Questions ABA, ethylene... 1 Edit Delete
12875 Which one of the following acids is a derivative of carotenoids? 5 512 Recommended Questions Indole-butyric acid, Indole-3-acetic acid... 4 Edit Delete
12874 Identify the incorrect statement about ABA growth regulator. 5 512 Recommended Questions It increases the tolerance of plants against different stresses., It acts as general plant growth inhibitor and inhibitor of metabolism.... 4 Edit Delete
12873 Abscisic acid is known as the stress hormone because it 5 512 Recommended Questions breaks seed dormancy, induces flowering... 4 Edit Delete
12872 In most situations, which of the following acts as an antagonist to GAs? 5 512 Recommended Questions ABA, IAA... 1 Edit Delete
12871 Which of the following is not ABA? 5 512 Recommended Questions Inhibitor-B, Abcission II... 4 Edit Delete
12870 Ethylene is used for 5 512 Recommended Questions retarding ripening of tomatoes, the hastening of ripening of fruits... 2 Edit Delete
12869 The phytohormone which promotes rapid internode elongation in deep water rice plant is 5 512 Recommended Questions Gibberellins, Ethylene... 2 Edit Delete
12868 A. ______ hormone is most widely used PGR in agriculture. B. ______ hormone is related with Richmond Lang effect. 5 512 Recommended Questions A: Auxin, B: CK, A: Auxin, B: GA... 3 Edit Delete
12867 The PGR used to initiate flowering and for synchronizing fruit-set in pineapples is: 5 512 Recommended Questions Abscisic acid, Cytokinin... 4 Edit Delete
12866 Plant growth regulator, which promotes senescence and abscission of plant organs, is also related to which of the following physiological effects? 5 512 Recommended Questions Thinning of cotton, cherry, and walnut, Overcome apical dominance... 1 Edit Delete
12865 Thinning of cotton and promotion of femaleness in cucumber are physiological effects of PGR which 5 512 Recommended Questions Helps of withstand desiccation conditions and is antagonistic to GAs, Increases the market period of fruits by delaying senescence... 3 Edit Delete
12864 Match the following: Column A: (i) Auxin, (ii) Gibbrelic Acid, (iii) Cytokinin, (iv) Ethylene; Column B: (a) Brewing industry, (b) Xylem differentiation, (c) Fruit ripening, (d) Overcome Apical dominance 5 512 Recommended Questions (i) (b), (ii) (a), (iii) (d), (iv) (c), (i) (a), (ii) (b), (iii) (c), (iv) (d)... 1 Edit Delete
12863 Which of the following hormones is common in both the categories of plant promoter and plant inhibitor? 5 512 Recommended Questions GA, ABA... 4 Edit Delete
12862 Which of the following is wrong? 5 512 Recommended Questions ABA is Growth inhibiting regulator, Ethylene could fit either of the groups, inhibitors and activators.... 4 Edit Delete
12861 Ethephon hastens the fruit ripening in tomatoes and apple and accelerates abscission in flowers and fruits. Above statement indicates that ethephon must release - 5 512 Recommended Questions ABA, C₂H₄... 2 Edit Delete
12860 Cousins confirmed the release of a volatile substance from ripened oranges that 5 512 Recommended Questions Hastened the ripening of already ripened bananas, Hastened the ripening of unripened banana... 2 Edit Delete
12859 C₂H₄ or Ethylene are...... or derivative of.... 5 512 Recommended Questions Indol compounds, Gases... 2 Edit Delete
12858 The effect of apical dominance can be overcome by which of the following hormone? 5 512 Recommended Questions IAA, Ethylene... 4 Edit Delete
12857 Coconut water contains 5 512 Recommended Questions ABA, auxin... 3 Edit Delete
12856 Find the incorrect statement. F. Skoog and his co-workers observed that 5 512 Recommended Questions Callus proliferated only if Auxin is there, Callus proliferated only if Auxin + extracts of vascular tissue was there... 1 Edit Delete
12855 Kinetin (cytokinin) was first discovered as a breakdown product of 5 512 Recommended Questions DNA, t-RNA... 1 Edit Delete
12854 Cytokinin does not help in: 5 512 Recommended Questions Lateral shoot growth, Overcoming apical dominance... 4 Edit Delete
12853 Natural cytokinins are synthesized in tissue that are:- 5 512 Recommended Questions senescent, dividing rapidly... 2 Edit Delete
12852 You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots? 5 512 Recommended Questions IAA and gibberellin, Auxin and cytokinin... 2 Edit Delete
12851 N6-furfurylamino purine and kinetin are derivative of …… 5 512 Recommended Questions Indol compounds, Adenine... 2 Edit Delete
12850 Select the correct match 5 512 Recommended Questions Auxin - Promote seed dormancy, Cytokinin - Overcoming apical dominance... 2 Edit Delete
12849 Cytokinesis promoting substance was crystallised by 5 512 Recommended Questions Skoog and Darwin, Skoog and Miller... 2 Edit Delete
12848 Kinetin term was used for.....by... 5 512 Recommended Questions Cytokinins, Darwin, Cytokinin, Skoog And Miller... 2 Edit Delete
12847 To increase sugar production in sugarcanes, they are sprayed with 5 512 Recommended Questions IAA, cytokinin... 3 Edit Delete
12846 Gibberellic acid is a/an:- 5 512 Recommended Questions Indole compound, Terpene... 2 Edit Delete
12845 Early seed production in... can be done by GAs 5 512 Recommended Questions Pineapple, Grapes... 4 Edit Delete
12844 Which of the following statements is correct? 5 512 Recommended Questions All GAs are basic, All GAs are Acidic... 2 Edit Delete
12843 Foolish Seedling- Find the odd one. 5 512 Recommended Questions Bakane, Disease of Rice seedlings... 3 Edit Delete
12842 In order to increase the yield of sugarcane crops, which of the following plant growth regulators should be sprayed? 5 512 Recommended Questions Ethylene, Auxins... 3 Edit Delete
12841 In which of the following options the PGR is correctly matched with its two functions? 5 512 Recommended Questions Abscisic acid - (i) Induce immediate stomatal closure in leaves. (ii) Induce rooting is a twig., Gibberellins - (i) Bolting in rosette plant. (ii) Speed up the malting process in brewing industry.... 2 Edit Delete
12840 Which of the following statements about plant hormones is false? 5 512 Recommended Questions The growth of plants in nature is probably regulated by a combination of growth-stimulating and growth-inhibiting hormones., Abscisic acid generally promotes growth.... 2 Edit Delete
12839 Find the wrong match. 5 512 Recommended Questions F. W. Went - Oat seedlings, Charles Darwin - Canary Grass... 4 Edit Delete
12838 E. Kurosawa 5 512 Recommended Questions Reported the appearance of symptoms of the disease in rice seedlings, In 1926... 4 Edit Delete
12837 In the process of apical dominance, lateral buds are unable to grow in the presence of apical bud. This is due to: 5 512 Recommended Questions less amount of cytokinins in lateral buds, more amount of cytokinins in lateral buds... 3 Edit Delete
12836 In a flowering plant if auxins are not synthesizing, then effects which would most probably be seen in this plant are 5 512 Recommended Questions i, ii and iv, i, iii and iv... 2 Edit Delete
12835 It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield? 5 512 Recommended Questions Cytokinin and Abscisic acid, Auxin and Ethylene... 2 Edit Delete
12834 For tea plantations, hedge-making, which of the following PGR is used? 5 512 Recommended Questions Auxins, Cytokinins... 1 Edit Delete
12833 Auxins Find the odd one. 5 512 Recommended Questions Initiate rooting in stem cuttings, Promote flowering e.g. Pineapples... 4 Edit Delete
12832 Removal of shoot tips is a very useful technique to boost the production of tea leaves. This is because: 5 512 Recommended Questions Gibberellins prevent bolting and are inactivated., Auxins prevent leaf drop at early stages.... 3 Edit Delete
12831 Which of the given hormones is used to produce parthenocarpic or seedless banana and tomatoes? 5 512 Recommended Questions Auxin, Cytokinin... 1 Edit Delete
12830 21 5 512 Recommended Questions 1, 2... 1 Edit Delete
12829 In most higher plants, the growing apical bud inhibits the growth of... or axillary buds, a phenomenon called... 5 512 Recommended Questions Lateral, lateral Dominance, Lateral, Apical Dominance... 2 Edit Delete
12828 Plant Growth Regulators (PGRs) are not 5 512 Recommended Questions Very less in number in plants, Small and simple molecules... 1 Edit Delete
12827 Fruit and leaf drop at early stages can be prevented by the application of 5 512 Recommended Questions Cytokinins, ethylene... 3 Edit Delete
12826 Here arrows indicate 5 512 Recommended Questions Source of Auxin, Direction of bending... 3 Edit Delete
12825 The Discovery of PGRs 5 512 Recommended Questions Four discovery were accidental one was with a planned experiment, Three discovery were accidental Two were with a planned experiment... 4 Edit Delete
12824 .........is the site of transmittable influence that caused the bending of the entire......... 5 512 Recommended Questions Coleorrhiza, Coleoptile... 2 Edit Delete
12823 In the living plant body, the PGRs can be broadly divided into two groups. This classification is actually based on 5 512 Recommended Questions Function, Structure... 1 Edit Delete
12822 Internodal segments of tobacco stems, the callus is actually 5 512 Recommended Questions An undifferentiated cell, A mass of differentiated cell... 3 Edit Delete
12821 One of the synthetic auxin is 5 512 Recommended Questions NAA, IAA... 1 Edit Delete
12820 Auxin means 5 512 Recommended Questions To escape, To slow... 3 Edit Delete
12819 The application of synthetic plant hormone like IAA, IBA and NAA are best described as: 5 512 Recommended Questions prevent early fruit fall before harvesting and is used to produce parthenocarpic fruit, prevent early fruit fall only... 1 Edit Delete
12818 This picture suggests that 5 512 Recommended Questions Tip of the coleorhiza is the source of Auxin, Tip of coleoptile is the source of Auxin... 2 Edit Delete
12817 Auxin was isolated by 5 512 Recommended Questions F. W. Went, Charles Darwin... 1 Edit Delete
12816 Plasticity in plant growth means that 5 512 Recommended Questions plant roots are extensible, plant development is dependent on the environment... 2 Edit Delete
12815 Heterophyllous development due to environment is an example of:- 5 512 Recommended Questions Developmental noise, Norm of the reaction... 4 Edit Delete
12814 The typical growth curve in plants is: 5 512 Recommended Questions sigmoid, linear... 1 Edit Delete
12813 Growth can be measured in various ways. Which of these can be used as parameters to measure growth? 5 512 Recommended Questions increase in cell number, increase in cell size... 4 Edit Delete
12812 Consider the following statements regarding growth in plants - I: Cell enlargement requires water. II: Oxygen helps in releasing metabolic energy for growth activities. III: Nutrients are required for synthesis of protoplasm and act as source of energy. Which of the above statements are true? 5 512 Recommended Questions I and II only, I and III only... 4 Edit Delete
12811 The growth of a root elongating at a constant rate will be represented by: 5 512 Recommended Questions A only, B only... 1 Edit Delete
12810 At the root apex the cells of the meristematic region are not characterized by:- 5 512 Recommended Questions Being rich in protoplasm, Abundant plasmodesmatal connections... 4 Edit Delete
12809 193 5 511 Recommended Questions 1, 2... 1 Edit Delete
12808 The granular endoplasmic reticulum is not associated with which of the following functions? 5 511 Recommended Questions Synthesis of secretory as well as non-secretory proteins, Synthesis of non-secretory proteins... 3 Edit Delete
12807 SER and RER can be distinguished with its presence in 5 511 Recommended Questions protein synthesising cells, protein and fat synthesising cells... 4 Edit Delete
12806 A cell organelle containing hydrolytic enzyme is: 5 511 Recommended Questions lysosome, microsome... 1 Edit Delete
12805 Eukaryotic cells contain 5 511 Recommended Questions 70 'S' ribosomes, 70 'S' and 80 'S' ribosome... 2 Edit Delete
12804 Inclusion bodies of blue-green, purple, and green photosynthetic bacteria are: 5 511 Recommended Questions Contractile vacuoles, Gas vacuoles... 2 Edit Delete
12803 Peptide synthesis inside a cell takes place in 5 511 Recommended Questions mitochondria, chromoplast... 3 Edit Delete
12802 Which of the following are not membrane-bound? 5 511 Recommended Questions Vacuoles, Ribosomes... 2 Edit Delete
12801 Choose the incorrectly matched pair. 5 511 Recommended Questions Contractile vacuole - Excretion., SER - Steroidal hormones synthesis.... 4 Edit Delete
12800 Cilia and flagella in a eukaryotic cell 5 511 Recommended Questions Are motile at base, Are made of 20 microtubules... 2 Edit Delete
12799 Mark the incorrect statement 5 511 Recommended Questions All the cell organelles perform different & specific function., Basal body of cilia & flagella in prokaryotes is formed by cytoskeleton.... 2 Edit Delete
12798 Find the incorrect statement: 5 511 Recommended Questions Plastids found in plant cells and in euglenoids., Golgi apparatus is site of formation of glycoproteins and glycolipids.... 4 Edit Delete
12797 Select the correct statement with respect to axoneme of eukaryotic flagella. 1. It is composed of 9 peripheral triplet microfibrils of tubulin proteins. 2. It does not have covering of plasma membrane. 3. Central tubules are enclosed by a central sheath. 4. It gives rise to spindle apparatus during cell division. 5 511 Recommended Questions It is composed of 9 peripheral triplet microfibrils of tubulin proteins., It does not have covering of plasma membrane.... 3 Edit Delete
12796 Cilia and flagella resemble in the 5 511 Recommended Questions Microtubular structure, Presence of basal granules... 4 Edit Delete
12795 The diagram below is a diagrammatic representation showing 5 511 Recommended Questions Section of a centriole, A cartwheel 9 + 0 structure of microtubular organisation... 3 Edit Delete
12794 Both cilium and flagellum arise from the part which is structurally similar to 5 511 Recommended Questions Centriole, Kinetochore... 1 Edit Delete
12793 Mark the correct statement about centriole. 5 511 Recommended Questions Forms basal body, Found in higher plant cells... 1 Edit Delete
12792 Which of the following is true about centrioles? 5 511 Recommended Questions It lacks microtubule in the centre, Hub is proteinaceous... 4 Edit Delete
12791 Which of the following is true about centrosome 5 511 Recommended Questions membraneless organelle, contains two centrioles... 4 Edit Delete
12790 Which of the following is not a part of the cytoskeleton? 5 511 Recommended Questions Microtubule, Microfilament... 4 Edit Delete
12789 Cytoskeleton is made up of 5 511 Recommended Questions calcium carbonate granules, callose deposits... 4 Edit Delete
12788 Which of the following are the functions of cytoskeleton? 5 511 Recommended Questions mechanical support, motility... 4 Edit Delete
12787 Select the wrong statement about eukaryotic cells. 5 511 Recommended Questions They have well defined nucleus, Possess 70S ribosomes... 4 Edit Delete
12786 The contractile vacuole 5 511 Recommended Questions is present in Amoeba, helps in osmoregulation... 4 Edit Delete
12785 Select the correct match 5 511 Recommended Questions 70 'S' ribosome - Bacterial mesosome, Cytoskeleton - Lipoproteins... 3 Edit Delete
12784 Chromatin contains 5 511 Recommended Questions DNA, histone protein, basic non-histone protein, dsRNA, DNA, basic histone protein, non-histone protein, RNA... 2 Edit Delete
12783 A chromosome carrying the centromere at one of the ends is called 5 511 Recommended Questions acentric, submetacentric... 3 Edit Delete
12782 Chromatin can be stained with 5 511 Recommended Questions Basic dyes, neutral dyes... 1 Edit Delete
12781 Which of the following is true about chromosome 5 511 Recommended Questions nucleoprotein, 23 pairs in single human diploid cell... 4 Edit Delete
12780 Disc-shaped proteinaceous structure associated with centromere is called 5 511 Recommended Questions Kinetochore, Secondary constriction... 1 Edit Delete
12779 The spherical structures present in the nucleoplasm 5 511 Recommended Questions Has contents continuous with the rest of the nucleoplasm., Is a membrane bound structure... 1 Edit Delete
12778 A nuclear pore allows 5 511 Recommended Questions Unidirectional movement of DNA, RNA movement only... 3 Edit Delete
12777 The organelles formed by the process of packaging in the golgi apparatus is 5 511 Recommended Questions Double membrane organelle., Possess single circular DNA molecule... 3 Edit Delete
12776 Lysosomal enzymes act at 5 511 Recommended Questions Basic pH, Acidic pH... 2 Edit Delete
12775 Which of the following statement are correct:- 5 511 Recommended Questions Lysosome contain a hydrolytic enzyme which acts in pH= 5, Glycosylation complete in the Golgi body.... 4 Edit Delete
12774 Which of the following is true for lysosomes 5 511 Recommended Questions membrane bound vesicles, formed by golgibody... 4 Edit Delete
12773 A number of proteins synthesized by ribosomes on the endoplasmic reticulum are modified in the _____ of the Golgi apparatus before they are released from its trans face 5 511 Recommended Questions Tubules, Vesicles... 3 Edit Delete
12772 Find out the incorrect match 5 511 Recommended Questions Lysosome - Intracellular scavenging, Golgi complex - Metabolism of xenobiotics... 2 Edit Delete
12771 Vesicles from ER fuse with 5 511 Recommended Questions Maturing face of Golgi body, Forming face of Golgi body... 2 Edit Delete
12770 Choose incorrect match 5 511 Recommended Questions Chloroplast - Thylakoid, Golgi bodies - Cristae... 2 Edit Delete
12769 Select the incorrect statement with respect to Golgi apparatus 5 511 Recommended Questions The cis and trans faces of the organelle are similar but interconnected, The Golgi cisternae are concentrically arranged near the nucleus... 1 Edit Delete
12768 Which of the following is the correct sequence / route of the secretory product? 5 511 Recommended Questions ER → Vesicles → Cis region of GB → Trans region of GB → Vesicle → Plasma membrane., RER → GB → Lysosome → Nuclear membrane → Plasma membrane.... 1 Edit Delete
12767 Which cell organelle principally performs the function of packaging materials, to be delivered either to the intra-cellular targets or secreted outside the cell? 5 511 Recommended Questions Rough endoplasmic reticulum, Golgi apparatus... 2 Edit Delete
12766 Which of the following statement is true for a secretory cell? 5 511 Recommended Questions Golgi apparatus is absent, Rough Endoplasmic Reticulum (RER) is easily observed in the cell.... 2 Edit Delete
12765 Which of the following organelles is not correctly matched with its feature? 5 511 Recommended Questions Smooth endoplasmic reticulum - Synthesis of steroidal hormones in animals, Golgi apparatus - Formation of glycoproteins and glycolipids... 3 Edit Delete
12764 Which of the following statement is incorrect with respect to endomembranous system? 5 511 Recommended Questions Found only in eukaryotes., The organelle of this system function in coordinated manner.... 4 Edit Delete
12763 ER, Golgi complex, lysosomes and vacuoles are included in endomembrane system because:- 5 511 Recommended Questions Their function are similar, Their structure are same... 3 Edit Delete
12762 The endomembrane system of the cell includes 5 511 Recommended Questions ER + Golgi body + Mitochondria, ER + Golgi body + Vacuole + Microtubules... 3 Edit Delete
12761 Smooth endoplasmic reticulum performs all the functions, except 5 511 Recommended Questions Production of glycoprotein., Synthesis of lipid.... 1 Edit Delete
12760 Plastid differs from mitochondria on the basis of one of the following features. Mark the right answer. 5 511 Recommended Questions Presence of two layers of membrane, Presence of ribosome... 3 Edit Delete
12759 The stain used to visualise mitochondria is 5 511 Recommended Questions fast green, safranin... 4 Edit Delete
12758 Both chloroplast and mitochondria show similarity in 5 511 Recommended Questions Presence of DNA with more AT, Presence of 70s ribosome... 4 Edit Delete
12757 Chloroplast differs from mitochondria in 5 511 Recommended Questions Having circular DNA and 70S ribosomes, Phase of division or duplication during cell cycle... 4 Edit Delete
12756 The outer as well as inner membrane of mitochondria 5 511 Recommended Questions Form a number of infoldings towards the matrix, Both have a similar amount of cardiolipin... 4 Edit Delete
12755 Which of the following is true about mitochondria except 5 511 Recommended Questions Semi-autonomous organelle, Compartmentalisation is present... 3 Edit Delete
12754 Choose the correct statements – I. Mitochondria and Chloroplast transfer energy. II. Mitochondrion is a power-house of cell as it produces most of the cellular ATP. III. Mitochondria and chloroplast are found in all eukaryotic cells. IV. Mitochondria are the sites of anaerobic respiration. V. The matrix of mitochondria posses a single linear DNA, many RNA molecules, 80S ribosomes. 5 511 Recommended Questions IV and V, I, II... 2 Edit Delete
12753 In the given diagram of chloroplast, enzymes required for the synthesis of carbohydrates and proteins are located in: 5 511 Recommended Questions A, B... 4 Edit Delete
12752 Fat soluble pigments like xanthophylls are present in: 5 511 Recommended Questions Chromoplasts, Aleuroplasts... 1 Edit Delete
12751 Select the incorrect match 5 511 Recommended Questions Elaioplast - Oil and fats storage, Amyloplast - Carbohydrate storage... 4 Edit Delete
12750 Integral or Peripheral proteins classification is based on 5 511 Recommended Questions protein size, ease of extraction... 2 Edit Delete
12749 In human beings, the membrane of erythrocyte has 5 511 Recommended Questions Approximately 40% proteins and 52% lipids, Cephalin on the outer side and lecithin on the inner side... 3 Edit Delete
12748 Mark the incorrect statement related to cell wall (a) Non-living rigid structure (b) Present in fungi and plants (c) Provides barriers to undesirable macromolecules (d) Primary wall is capable of growth (e) Primary wall gradually diminishes as the cells matures 5 511 Recommended Questions a, b, d, d only... 4 Edit Delete
12747 Which of the following cell wall comes early and disappears gradually in the life of plant? 5 511 Recommended Questions primary cell wall, secondary cell wall... 1 Edit Delete
12746 Thin, amorphous, and cementing layer between two adjacent cells, is 5 511 Recommended Questions Primary wall, Middle lamella... 2 Edit Delete
12745 Select the incorrect match 5 511 Recommended Questions Palade particle – Ribosome, Flagella – Cell movement... 3 Edit Delete
12744 How many of the following kingdoms are eukaryotic (monera, protista, fungi, plante, Animalia) 5 511 Recommended Questions 5, 4... 2 Edit Delete
12743 Prokaryotic mesosomes do not help in: 5 511 Recommended Questions Cell wall formation, DNA replication... 4 Edit Delete
12742 Which of the following is true 5 511 Recommended Questions bacterial flagella is made up of flagellin protein, bacterial pili is made up of pilin protein... 4 Edit Delete
12741 Identify the accurate explanation of mesosome. It is 5 511 Recommended Questions a specialised structure of prokaryotic cell formed by extension of plasma membrane into the cytoplasm, the middle layer of the prokaryotic cell wall... 1 Edit Delete
12740 Which of the following is true about Inclusion bodies 5 511 Recommended Questions membraneless, present freely in cytoplasm... 4 Edit Delete
12739 In prokaryotes, ribosomal RNAs 5 511 Recommended Questions As well as proteins are synthesized in cytoplasm, Are synthesized in the nucleolus while proteins in cytoplasm... 1 Edit Delete
12738 Which of the following is incorrect match 5 511 Recommended Questions bacillus- rod like, coccus-comma shaped... 2 Edit Delete
12737 Which of the following sequence is correct with respect to size? 5 511 Recommended Questions Eukaryotic cell > PPLO > Viruses > Bacteria, Eukaryotic cell > Bacteria > PPLO > Viruses... 2 Edit Delete
12736 Nerve cell is 5 511 Recommended Questions largest and branched, longest and branched... 2 Edit Delete
12735 Which one is incorrect 5 511 Recommended Questions Mycoplasmas are greater than bacteria, largest isolated cell is ostrich egg... 1 Edit Delete
12734 Cell theory formulated by Schleiden and Schwann does not explain which one of the following features? 5 511 Recommended Questions Organisms are composed of cells and their products, All cells are basically alike in their structure and metabolism... 3 Edit Delete
12733 Which one of the following is incorrect statement 5 511 Recommended Questions All organisms are composed of cells, Cell is the basic unit of life... 3 Edit Delete
12732 Cell theory was proposed by 5 511 Recommended Questions a botanist, a zoologist... 3 Edit Delete
12731 Cell is the fundamental structural and functional unit of all living organisms because: 5 511 Recommended Questions Anything less than a complete structure of a cell does not ensure independent living., The metabolic reactions can only occur inside a living cell.... 1 Edit Delete
12730 Which of the following statements are correct? a. The rough endoplasmic reticulum is frequently observed in the cells actively involved in protein synthesis. b. Proteins that are to be used outside the cell are synthesized on free ribosomes. c. In the eukaryotic cell there is an extensive compartmentalization of cytoplasm through the presence of membrane-bound organelles d. ER is found prominently in human eggs and sperms. 5 511 Recommended Questions All are correct, b & d... 4 Edit Delete
12729 Choose the correct option with respect to function of the cell organelles 5 511 Recommended Questions Protein synthesizes, mRNA synthesis... 4 Edit Delete
12728 Which of the following synthesizes proteins for export? 5 511 Recommended Questions Free ribosomes, SER... 4 Edit Delete
12727 Examine the figure given below and select the part correctly matched with its function/structure 5 511 Recommended Questions Part (A): Ribosome-made up of 30S and 50S subunits, Part (C): RER - principally performs the function of packaging materials... 4 Edit Delete
12726 All the following are the part of a eukaryotic cell endomembranous system except: 5 511 Recommended Questions Vacuole, Lysosome... 4 Edit Delete
12725 Match the following columns and select the correct option: Column I: (a) Smooth endoplasmic reticulum, (b) Rough endoplasmic reticulum, (c) Golgi complex, (d) Centriole. Column II: (i) Protein synthesis, (ii) Lipid synthesis, (iii) Glycosylation, (iv) Spindle formation. 5 511 Recommended Questions (b) (i), (c) (iii), (a) (ii), (d) (iv), (c) (iii), (i) (ii), (iv) (i)... 1 Edit Delete
12724 The endomembrane system of a eukaryotic cell does not include: 5 511 Recommended Questions Endoplasmic reticulum, Lysosome... 4 Edit Delete
12723 Select the correct matching in the following pairs. 5 511 Recommended Questions Smooth ER—Oxidation of phospholipids, Smooth ER—Synthesis of lipids... 2 Edit Delete
12722 Cellular organelles with membranes are 5 511 Recommended Questions nuclei, ribosomes and mitochondria, chromosomes, ribosomes and endoplasmic reticulum... 4 Edit Delete
12721 Select which one is not true for ribosome 5 511 Recommended Questions Made up of two sub-units, Form polysome... 4 Edit Delete
12720 What is true about ribosomes? 5 511 Recommended Questions The prokaryotic ribosomes are 80 S, where S stands for sedimentation coefficient, These are composed of ribonucleic acid and proteins... 2 Edit Delete
12719 Which one of the following is not an inclusion body found in prokaryotes? 5 511 Recommended Questions Phosphate granule, Cyanophycean granule... 4 Edit Delete
12718 DNA is not present in: 5 511 Recommended Questions chloroplast, ribosomes... 2 Edit Delete
12717 Polysome is formed by 5 511 Recommended Questions several ribosomes attached to a single mRNA, many ribosomes attached to a strand of endoplasmic reticulum... 1 Edit Delete
12716 Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as? 5 511 Recommended Questions Polysome, Polyhedral bodies... 1 Edit Delete
12715 Identify the correct statement regarding the part of a cell, the structure of which is shown in the given diagram: 5 511 Recommended Questions It is not found in the plant cells, It serves to provide an attachment with a surface for a bacterial cell... 4 Edit Delete
12714 A centriole-like structure, from which the cilium and the flagellum emerge, is the: 5 511 Recommended Questions Centrosome, Basal body... 2 Edit Delete
12713 The arrangement of outer and central microtubules in a cilium is called the: 5 511 Recommended Questions 9 + 1 pattern, 9 + 0 pattern... 4 Edit Delete
12712 The motile bacteria are able to move by 5 511 Recommended Questions fimbriae, flagella... 2 Edit Delete
12711 Match the following and select the correct answer: Column I (a) Centriole (b) Chlorophyll (c) Cristae (d) Ribozymes Column II (i) Infoldings in mitochondria (ii) Thylakoids (iii) Nucleic acids (iv) Basal body of cilia or flagella 5 511 Recommended Questions A-iv, B-ii, C-i, D-iii, A-i, B-ii, C-iv, D-iii... 1 Edit Delete
12710 94 5 511 Recommended Questions 1, 2... 1 Edit Delete
12709 A non-membrane bound organelle found exclusively in animal cells is: 5 511 Recommended Questions Sphaerosome, Glyoxisome... 4 Edit Delete
12708 Which of the following is not a function of cytoskeleton in a cell? 5 511 Recommended Questions Intracellular transport, Maintenance of cell shape and structure... 1 Edit Delete
12707 Microtubules are the constituents of 5 511 Recommended Questions spindle fibres, centrioles and cilia, centrioles, spindle fibres and chromatin... 1 Edit Delete
12706 What is a tonoplast? 5 511 Recommended Questions outer membrane of mitochondria, inner membrane of mitochondria... 3 Edit Delete
12705 Read the statements carefully and select the set of correct statements 5 511 Recommended Questions All except b, a & c... 4 Edit Delete
12704 Which of the following is true for vacuole 5 511 Recommended Questions It is present in both plants and animals, Central vacuole is present in plant... 4 Edit Delete
12703 In plant cell the concentration of ions is more in 5 511 Recommended Questions cytoplasm, vacuoles... 2 Edit Delete
12702 Select the mismatch. 5 511 Recommended Questions Gas vacuoles — Green bacteria Cells, Large central vacuoles — Animal cells... 2 Edit Delete
12701 Vacuole in a plant cell: 5 511 Recommended Questions is membrane-bound and contains storage proteins and lipids, is membrane-bound and contains water and excretory substances... 2 Edit Delete
12700 Which of the following pair of organelles does not contain DNA? 5 511 Recommended Questions Nuclear envelope and Mitochondria, Mitochondria and Lysosomes... 4 Edit Delete
12699 The osmotic expansion of a cell kept in water is chiefly regulated by 5 511 Recommended Questions mitochondria, vacuoles... 2 Edit Delete
12698 The membrane of vacuole is called 5 511 Recommended Questions plasma membrane, tonoplast... 2 Edit Delete
12697 Which of the following stain is not used for staining chromosomes? 5 511 Recommended Questions Basic fuchsin, Safranin... 2 Edit Delete
12696 Kinetochores are associated with 5 511 Recommended Questions Outer part of primary constriction, Centromere in its inner central part... 1 Edit Delete
12695 The chromosomes in which centromere is situated close to one end are 5 511 Recommended Questions metacentric, acrocentric... 2 Edit Delete
12694 Match the columns and identify the correct option. 5 511 Recommended Questions A → (iv), B → (iii), C → (i), D → (ii), A → (iii), B → (iv), C → (i), D → (ii)... 2 Edit Delete
12693 Few chromosome have non-staining secondary constrictions at a constant location, also known as:- 5 511 Recommended Questions Cristae, Satellite... 2 Edit Delete
12692 Which of the following organelles contain DNA? (i) Mitochondria (ii) Chloroplasts (iii) Golgi bodies (iv) Ribosomes 5 511 Recommended Questions (i) and (ii), (ii) and (iii)... 1 Edit Delete
12691 The content of the nucleolus is continuous with nucleoplasm 5 511 Recommended Questions Through microtubules, Through nuclear pores... 3 Edit Delete
12690 Non-membranous nucleoplasmic structures in the nucleus, are the sites for active synthesis of: 5 511 Recommended Questions protein, mRNA... 3 Edit Delete
12689 The given diagram represents the four different structures which one of these is correct containing material and function: 5 511 Recommended Questions Nucleolus NOR Synthesis of rRNA for formation of 80 S Ribosome, Nuclear Pore Chromatin Exchange material between cytoplasm and nucleoplasm... 1 Edit Delete
12688 The outer membrane of the nucleus: I. is continuous with the Endoplasmic reticulum II. does not bear ribosomes. 5 511 Recommended Questions Only I is correct, Only II is correct... 1 Edit Delete
12687 Ribosomal RNA is actively synthesized in 5 511 Recommended Questions lysosomes, nucleolus... 2 Edit Delete
12686 Which organelle is extensive and continuous with the outer membrane of the nucleus? 5 511 Recommended Questions Golgi complex, ER... 2 Edit Delete
12685 Consider the following statements: I: In animal cells, lipid like steroidal hormones are synthesized in SER. II: Golgi apparatus is the important site for formation of glycoproteins and glycolipids. III: Lysosomes carry alkaline hydrolases. Which of the above statements are true? 5 511 Recommended Questions I and II only, I and III only... 1 Edit Delete
12684 Which of the following statements is not correct? 5 511 Recommended Questions Lysosomes are formed by the process of packaging in the endoplasmic reticulum., Lysosomes have numerous hydrolytic enzymes... 1 Edit Delete
12683 Lysosomes are membrane-bound vesicular structures and are very rich in 5 511 Recommended Questions DNAs, proteases, and lipases, Enzymes optimally active at the basic pH... 3 Edit Delete
12682 Which one of the following cell organelles is enclosed by a single membrane? 5 511 Recommended Questions Chloroplasts, Lysosomes... 2 Edit Delete
12681 Select the features which are common for both ER and Golgi apparatus. 5 511 Recommended Questions Only (B), Only (B) and (C)... 2 Edit Delete
12680 Which of the following cell organelle is closely associated with ER & helps in formation of plasma membrane during cytokinesis? 5 511 Recommended Questions Centrosome, Sphaerosomes... 3 Edit Delete
12679 The cis and trans faces of the Golgi Apparatus are: 5 511 Recommended Questions Similar but not interconnected, Similar and interconnected... 3 Edit Delete
12678 The Golgi complex participates in? 5 511 Recommended Questions Fatty acid breakdown, Formation of secretory vesicles... 2 Edit Delete
12677 The Golgi complex plays a major role: 5 511 Recommended Questions in trapping the light and transforming it into chemical energy, in digesting proteins and carbohydrates... 4 Edit Delete
12676 Select the incorrect statement(s) with respect to functions of various cellular components a. Middle lamella works as glue to hold the adjacent cells together. b. Mitochondria, chloroplast and vacuoles are part of the endomembrane system as their functions are coordinated. c. Lipoidal steroid hormones are synthesized by ER component which is not associated to 80 S ribosomes. 5 511 Recommended Questions Only b, Only a... 1 Edit Delete
12675 In the given diagram, what is true for both A and B? 5 511 Recommended Questions They are involved in protein synthesis, They synthesize steroidal hormones in animal cells... 3 Edit Delete
12674 Which of the following statement is correct for the given diagram? 5 511 Recommended Questions 'C' possesses DNA molecule, RNA molecule and 80 S ribosomes, 'A' and 'B' have their own specific enzymes... 2 Edit Delete
12673 Unless specifically stained by a vital stain like Janus Green, which of the following will not be visible under a microscope? 5 511 Recommended Questions Rough endoplasmic reticulum, Smooth endoplasmic reticulum... 4 Edit Delete
12672 The two types of cellular organelles that transform energy are: 5 511 Recommended Questions Chromoplasts and Leucoplasts, Mitochondria and Chloroplasts... 2 Edit Delete
12671 Select the wrong statement from the following: 5 511 Recommended Questions both chloroplasts and mitochondria contain an inner and an outer membrane, both chloroplasts and mitochondria have an internal compartment, the thylakoid space bounded by the thylakoid membrane... 2 Edit Delete
12670 Which structures perform the function of mitochondria in bacteria? 5 511 Recommended Questions Nucleoid, Ribosomes... 4 Edit Delete
12669 The following are true about mitochondria except 5 511 Recommended Questions easily visualised under microscope without staining, It's number in the cell depends on the physiological activity of the cell... 1 Edit Delete
12668 Which of the following is present in matrix of mitochondria 5 511 Recommended Questions ribosomes, RNA... 4 Edit Delete
12667 Which one of the following has its own DNA? 5 511 Recommended Questions Mitochondria, Dictyosome... 1 Edit Delete
12666 For the sectional view of chloroplast which is given below. Choose the correct statement 5 511 Recommended Questions Envelope possess fully permeable membranes, 'B' possess the enzymes required for protein and carbohydrates synthesis... 2 Edit Delete
12665 Carotenoid pigments are found in: I. Chloroplasts II. Chromoplasts III. Leucoplasts 5 511 Recommended Questions Only I, Only I and II... 2 Edit Delete
12664 Who proposed the fluid mosaic model of plasma membrane? 5 511 Recommended Questions Camillo Golgi, Schleiden and Schwann... 3 Edit Delete
12663 Read the following statements carefully A. Lipid component of the plasma membrane mainly consists of phosphoglycerides. B. Polar molecules can pass through the lipid bilayer of plasma membrane, therefore they do not require carrier proteins to facilitate their transport. C. Secondary wall is capable of growth and it is formed on the outer side of the cell D. Quasi fluid nature of lipid enables lateral movement of proteins within the overall lipid bilayer of plasma membrane E. Middle lamella glues the different neighbouring cells together How many statements are incorrect? 5 511 Recommended Questions Three, Five... 4 Edit Delete
12662 The ability to move within the membrane is measured as its 5 511 Recommended Questions liquidity, fluidity... 2 Edit Delete
12661 The fluid nature of the membrane is also important from the point of view of functions like 5 511 Recommended Questions cell growth, secretion... 4 Edit Delete
12660 Fluid mosaic model of plasma membrane was given by 5 511 Recommended Questions Robertson, Robert Hooke... 3 Edit Delete
12659 Which of the following statement is not true for plasma membrane? 5 511 Recommended Questions It is present in both plant and animal cell., Lipid is present as a bilayer in it.... 4 Edit Delete
12658 For the fluid mosaic model of membrane given by Singer and Nicolson, which of the following conditions are not associated? 5 511 Recommended Questions Lipids enable the lateral movement of proteins in the membrane, Fluid nature of membrane helps in secretion... 4 Edit Delete
12657 Which of the following is the largest constituent of the membrane of the erythrocyte in human beings and is also responsible for performing most of the functions of the membrane? 5 511 Recommended Questions Protein, Lipid... 1 Edit Delete
12656 The tail of the phospholipid molecule: 5 511 Recommended Questions is hydrophilic and composed of phosphate, is hydrophilic and composed of saturated hydrocarbons... 3 Edit Delete
12655 Neutral solutes directly pass through the lipid bilayer of plasma membrane because 5 511 Recommended Questions Plasma membrane has special carrier for them, They are lipid soluble... 2 Edit Delete
12654 According to fluid mosaic model of plasma membrane the quasifluid nature of 5 511 Recommended Questions Protein enables lateral movement of lipids within in the overall bilayer, Lipid and protein enable the lateral movement of carbohydrates... 3 Edit Delete
12653 The ability of proteins to move laterally within the overall bilayer lipid molecules of plasma membrane is measured as its 5 511 Recommended Questions Stability, Thickness... 4 Edit Delete
12652 The plasma membrane consists mainly of 5 511 Recommended Questions phospholipids embedded in a protein bilayer, proteins embedded in a phospholipid bilayer... 2 Edit Delete
12651 Which one of the following is not a constituent of cell membrane? 5 511 Recommended Questions Cholesterol, Glycolipids... 3 Edit Delete
12650 Select the correct statement from the following regarding cell membrane. 5 511 Recommended Questions Na⁺ and K ions move across cell membrane by passive transport, Proteins make up 60 to 70% of the cell membrane... 4 Edit Delete
12649 Which of the following is not true of a eukaryotic cell? 5 511 Recommended Questions Cell wall is made up of peptidoglycans, It has 80S type of ribosome present in the cytoplasm... 1 Edit Delete
12648 Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells? 5 511 Recommended Questions Mathias Schleiden, Theodor Schwann... 2 Edit Delete
12647 Algae have cell wall made up of 5 511 Recommended Questions cellulose, galactans and mannans, hemicellulose, pectins and proteins... 1 Edit Delete
12646 Find out the incorrect statement 5 511 Recommended Questions Middle lamella is mainly made up of Ca-pectate, Cell wall is formed from inner side therefore secondary wall formed before primary wall... 2 Edit Delete
12645 Middle lamella is mainly composed of 5 511 Recommended Questions hemicellulose, muramic acid... 3 Edit Delete
12644 Which one of the following structures between two adjacent cells is an effective transport pathway? 5 511 Recommended Questions Plasmodesmata, Plastoquinones... 1 Edit Delete
12643 Which of the following features is common to prokaryotes and many eukaryotes? 5 511 Recommended Questions Chromatin material present, Cell wall present... 2 Edit Delete
12642 A common characteristic feature of plant sieve tube cells and most mammalian erythrocytes is 5 511 Recommended Questions absence of mitochondria, presence of cell wall... 4 Edit Delete
12641 Which of the followings are common to plant cell and animal cell? (Peroxisome, nucleolus, lysosome, plasmodesmata, microvilli, microtubule) 5 511 Recommended Questions 6, 5... 3 Edit Delete
12640 Which one of the following structure is an organelle within an organelle? 5 511 Recommended Questions Ribosome, Peroxysome... 1 Edit Delete
12639 Which of the following four cell structures is correctly matched with the accompanying description? 5 511 Recommended Questions Plasma membrane - Outer layer of cellulose or chitin, or absent, Mitochondria - Bacteria like elements with inner membrane forming sacs containing chlorophyll, found in plant cells and algae... 4 Edit Delete
12638 Match column I with column II. Column I (a) Golgi apparatus (b) Lysosomes (c) Vacuoles (d) Ribosomes Column II (i) Synthesis of protein (ii) Trap waste and excretory products (iii) Formation of glycoproteins and glycolipids (iv) Digesting biomolecules Choose the right match from the options given below: 5 511 Recommended Questions (a) (iii) (b) (iv) (c) (ii) (d) (i), (a) (iv) (b) (iii) (c) (i) (d) (ii)... 1 Edit Delete
12637 Which one of these is not a eukaryote? 5 511 Recommended Questions Euglena, Anabaena... 2 Edit Delete
12636 Eukaryotic cells considered as more efficient than prokaryotic cells, due to - 5 511 Recommended Questions compartmentalisation of cytoplasm, Infolding of membrane... 1 Edit Delete
12635 Which of the following is not true about plasmid 5 511 Recommended Questions extra chromosomal DNA, give unique genotypic characters to bacteria... 4 Edit Delete
12634 Chromatophores are: 5 511 Recommended Questions present in liopolysaccharide layer of gram negative bacteria, colored pigments present in fluorescent bacteria... 4 Edit Delete
12633 Select the wrong statement. 5 511 Recommended Questions Bacterial cell wall is made up of peptidoglycan, Pili and fimbriae are mainly involved in motility of bacterial cells... 2 Edit Delete
12632 Which of the following cell organelle is absent in prokaryotic cell? 5 511 Recommended Questions Ribosome, Lysosome... 4 Edit Delete
12631 Bacterial flagellum is composed of 5 511 Recommended Questions Basal body, axoneme and centrosome, Basal body, hook and filament... 2 Edit Delete
12630 The size of Pleuro Pneumonia Like Organism (PPLO) is: 5 511 Recommended Questions 0.02 μm, 1-2 μm... 4 Edit Delete
12629 Prokaryotic cells have something unique in the form of: 5 511 Recommended Questions Inclusion bodies, Plasmids... 1 Edit Delete
12628 In 70S, S is 5 511 Recommended Questions sedimentation coefficient, indirect measure of density and size... 4 Edit Delete
12627 Pigment-containing membranous extensions in some cyanobacteria are 5 511 Recommended Questions heterocysts, basal bodies... 4 Edit Delete
12626 Which of the following structure is not found in a prokaryotic cell? 5 511 Recommended Questions Nuclear envelope, Ribosome... 1 Edit Delete
12625 Cell envelope in bacteria consists of 5 511 Recommended Questions Plasma membrane only, Plasma membrane and mesosome... 4 Edit Delete
12624 Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen? 5 511 Recommended Questions Bacillus, Pseudomonas... 3 Edit Delete
12623 Different cells have different sizes. Given are the following cells: I. Mycoplasma II. Ostrich eggs III. Human RBC IV. Bacteria The correct ascending order of their size of the cells given above will be: 5 511 Recommended Questions I, IV, III, II, I, I, III, IV... 1 Edit Delete
12622 The main arena of various types of activities of a cell is 5 511 Recommended Questions plasma membrane, mitochondrion... 3 Edit Delete
12621 The organelle common among prokaryotic and eukaryotic cell is 5 511 Recommended Questions centrosome, ribosome... 2 Edit Delete
12620 Who first explained that new cells are formed from pre-existing cells 5 511 Recommended Questions Theodor Schwann, Rudolf Virchow... 2 Edit Delete
12619 The concept of "Omnis cellula-e-cellula" regarding cell division was first proposed by: 5 511 Recommended Questions Aristotle, Rudolf Virchow... 2 Edit Delete
12618 Identify the cell organelles labelled as A, B, C and D. Mark the correct option with respect to organelle and its function. 5 511 Recommended Questions A - Major site for synthesis of lipid., B - Performs the function of packaging materials, to be delivered to only intracellular targets.... 4 Edit Delete
12617 Choose incorrect statement 5 511 Recommended Questions Leeuwenhoek first saw and described a living cell, Robert Brown discovered cell... 2 Edit Delete
12616 Choose incorrect statement regarding cells 5 510 Recommended Questions Mycoplasma, the smallest cell, is only 0.3 μm in length while bacteria could be 3 to 5 μm, Hemoglobin associated human cells are about 7 μm in diameter... 3 Edit Delete
12615 When we peel the skin of a potato tuber, we remove 5 510 Recommended Questions Periderm, Epidermis... 1 Edit Delete
12614 The periderm includes: 5 510 Recommended Questions Secondary phloem, Cork... 4 Edit Delete
12613 In the given diagram, which is not related with (A) as indicated in the diagram? 5 510 Recommended Questions Complimentary cells., Involved in the exchange of gases.... 4 Edit Delete
12612 Bark refers to all the tissues 5 510 Recommended Questions External to vascular cambium, External to cork cambium... 1 Edit Delete
12611 Which of the following characters is/are related to isobilateral leaf? (a) Stomata are present on both surfaces. (b) Mesophyll is differentiated into palisade and spongy parenchyma. (c) Sub-stomatal cavity is present below the stoma of the abaxial epidermis. 5 510 Recommended Questions Only (a), Only (c)... 1 Edit Delete
12610 The isobilateral leaf is characterized by all the given characteristics, except 5 510 Recommended Questions Vascular bundles are always closed, Xylem is towards the adaxial surface of leaf... 4 Edit Delete
12609 Identify the incorrectly matched pair: 5 510 Recommended Questions Dicot root - Parenchymatous conjunctive tissue between xylem and phloem, Monocot root - Polyarch xylem bundles and well-developed pith... 3 Edit Delete
12608 Bulliform cells are associated with 5 510 Recommended Questions The epidermis of dorsiventral leaves, The adaxial epidermis of isobilateral leaves... 2 Edit Delete
12607 The number of stomata are ______ on upper and ______ lower surface in monocot leaf 5 510 Recommended Questions more, less, less, more... 3 Edit Delete
12606 In grasses leaves are exposed when bulliform cells becomes ________ and leaves curl inwards when they are ________ 5 510 Recommended Questions flaccid, turgid, plasmolysed, turgid... 3 Edit Delete
12605 Which is the correct set of options with respect to the following? 5 510 Recommended Questions Dicot stem - Differentiated ground tissue. Monocot stem - Endarch xylem. Dicot leaf - Isobilateral leaf. Monocot leaf - Dorsiventral leaf., Dicot stem - Scattered vascular bundle. Monocot stem - Arranged vascular bundle. Dicot leaf - Amphistomatic. Monocot leaf - Hypostomatic.... 3 Edit Delete
12604 The stomata are equally distributed on both the surfaces of the epidermis in 5 510 Recommended Questions Dorsiventral leaf, Dicot stem... 3 Edit Delete
12603 Select incorrect statement with respect to the anatomy of monocot stem 5 510 Recommended Questions Parenchymatous ground tissue is extended from hypodermis to center, Hypodermis is made of thick-walled living mechanical tissue... 2 Edit Delete
12602 Which type of cavity is present within the vascular bundles of monocot stem 5 510 Recommended Questions air cavity, water cavity... 2 Edit Delete
12601 In monocotyledonous stem 5 510 Recommended Questions Hypodermis is parenchymatous, Each vascular bundle is surrounded by collenchymatous bundle sheath... 4 Edit Delete
12600 Conjoint, collateral, closed vascular bundles without phloem parenchyma are found in plants which have 5 510 Recommended Questions Differentiated ground tissue in the stem, Dedifferentiated pericyclic structure in the mature root... 3 Edit Delete
12599 The hypodermis of the monocot stem is made up of 5 510 Recommended Questions collenchyma, sclerenchyma... 2 Edit Delete
12598 Monocot stems do not have 5 510 Recommended Questions Protophloem, Phloem parenchyma... 2 Edit Delete
12597 Water containing cavities in the vascular bundle is a characteristic feature of 5 510 Recommended Questions Dicot roots, Monocot stems... 2 Edit Delete
12596 Water containing cavities in the vascular bundle is a characteristic feature of 5 510 Recommended Questions Dicot roots, Monocot stems... 2 Edit Delete
12595 A conjoint and open vascular bundle will be observed in the transverse section of 5 510 Recommended Questions Monocot root, Monocot stem... 4 Edit Delete
12594 Read the following statements about dicot stem and choose the correct option. (a) Vascular bundles are arranged in a ring. (b) Vascular bundles are conjoint, collateral and open type. (c) Endarch type of arrangement of secondary xylem. 5 510 Recommended Questions Only (b) is correct, Only (c) is incorrect... 4 Edit Delete
12593 The endodermis is absent or indistinct in the:- 5 510 Recommended Questions Roots of all plants, Leaves of pteridophytes... 2 Edit Delete
12592 Well developed pith is present in 5 510 Recommended Questions Dicot stem, monocot root, Monocot stem, dicot root... 1 Edit Delete
12591 The cortex of dicot stem has been divided into 5 510 Recommended Questions hypodermis, General cortex, Endodermis, hypodermis, General cortex, pericycle... 1 Edit Delete
12590 Hypodermis in dicot stem is composed of 5 510 Recommended Questions Parenchyma, Collenchyma... 2 Edit Delete
12589 The type of vascular bundle in dicot stem is - 5 510 Recommended Questions open, conjoint with endarch protoxylem, open, conjoint with exarch protoxylem... 1 Edit Delete
12588 Which of the following function is performed by pericycle of dicot root? 5 510 Recommended Questions Lateral root formation., Lateral meristem formation.... 4 Edit Delete
12587 Protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of _____ xylem is present in ______. 5 510 Recommended Questions Secondary, root, Primary, stem... 4 Edit Delete
12586 Select incorrect statement with respect to anatomical features of monocot root. 5 510 Recommended Questions Pericycle produces lateral roots and part of vascular cambium, Exodermis is present in older roots... 1 Edit Delete
12585 Which of the following is not possible in monocot root? 5 510 Recommended Questions primary growth, secondary growth... 4 Edit Delete
12584 The conjunctive tissues lie between the 5 510 Recommended Questions Xylem and phloem, Pericycle and Endodermis... 1 Edit Delete
12583 Monocot root differs from dicot root in 5 510 Recommended Questions Having differentiated ground tissue, Presence of centripetal xylem... 4 Edit Delete
12582 The number of xylem bundles in monocot root is 5 510 Recommended Questions 2 to 6, less than 2... 3 Edit Delete
12581 In monocot root the pith present is 5 510 Recommended Questions small or inconspicuous, large and well developed... 2 Edit Delete
12580 In roots, the Protoxylem lies toward ________ and Metaxylem lies toward the ______ respectively. 5 510 Recommended Questions Periphery, centre, Centre, periphery... 1 Edit Delete
12579 All tissue except __________ constitute the ground tissue. 5 510 Recommended Questions Epidermis, Vascular bundles... 3 Edit Delete
12578 Some vascular bundles are described as open because these: 5 510 Recommended Questions are not surrounded by pericycle, are surrounded by pericycle but no endodermis... 3 Edit Delete
12577 In dicot stem the vascular bundle is:- 5 510 Recommended Questions Conjoint, open and with exarch protoxylem., Conjoint, open and with endarch protoxylem.... 2 Edit Delete
12576 Closed vascular bundles lack: 5 510 Recommended Questions Ground tissue, Conjuctive tissue... 3 Edit Delete
12575 In which of the following pairs of parts of a flowering plant is epidermis absent? 5 510 Recommended Questions Root tip and shoot tip, Shoot bud and floral bud... 1 Edit Delete
12574 Read the following statements with respect to pericycle and choose the suitable option (a) It is the outermost portion of stele, that may be paranchymatous or sclerenchymatous. (b) It is absent in monocot stems. (c) It is always single layered. 5 510 Recommended Questions Only (a) is correct, Only (b) is incorrect... 3 Edit Delete
12573 Which of the following statements is not true for stomatal apparatus? 5 510 Recommended Questions Inner walls of guard cells are thick, Guard cells invariably possess chloroplasts and mitochondria... 3 Edit Delete
12572 Epidermal cells are parenchymatous with ________ amount of cytoplasm lining, the cell wall and ______ vacuole. 5 510 Recommended Questions Small, large, Large, small... 1 Edit Delete
12571 Identify the incorrect statement: 5 510 Recommended Questions The presence of vessels is a characteristic of angiosperms, In roots the primary xylem is exarch... 3 Edit Delete
12570 Phloem in gymnosperms lacks: 5 510 Recommended Questions Both sieve tubes and companion cells, Albuminous cells and sieve cells... 1 Edit Delete
12569 Tracheids are 5 510 Recommended Questions Elongated cells with tapering ends and unperforated end walls, Elongated cells with tapering ends and perforated end wall... 1 Edit Delete
12568 Choose the correct option with respect to sclereids 5 510 Recommended Questions Physiologically active, Pits are present... 2 Edit Delete
12567 Dead cell without protoplasm is __________. 5 510 Recommended Questions Sclerenchyma, Tracheids... 4 Edit Delete
12566 Xylem parenchyma store food in the form of 5 510 Recommended Questions Starch, Fat... 4 Edit Delete
12565 Which of the following is related to tracheids? 5 510 Recommended Questions Deposition of suberin on cell wall, Found in gymnosperms only... 3 Edit Delete
12564 Select the incorrect statement with respect to vessel 5 510 Recommended Questions Devoid of protoplasm., Lignified wall.... 4 Edit Delete
12563 Which one is true regarding xylem? 5 510 Recommended Questions vessels are absent in gymnosperms, cells of vessel are called vessel members... 4 Edit Delete
12562 The presence of _______ is characteristic feature of angiosperms. 5 510 Recommended Questions Vessels, Tracheids... 1 Edit Delete
12561 Which of the following function can be performed by both parenchyma and collenchyma? 5 510 Recommended Questions Storage., Photosynthesis.... 2 Edit Delete
12560 Lignin is a component of the secondary walls of:- 5 510 Recommended Questions Epidermis, Collenchyma... 3 Edit Delete
12559 Mechanical support to the growing parts of the plant such as young stem and petiole of leaf is provided by a living tissue called 5 510 Recommended Questions Collenchyma, Aerenchyma... 1 Edit Delete
12558 Living mechanical tissue with a thickening at the cells corners possess deposition of 5 510 Recommended Questions Lignin, Cellulose and pectin only... 3 Edit Delete
12557 ________ are commonly found in the fruit walls of nut. 5 510 Recommended Questions Parenchyma, Collenchyma... 3 Edit Delete
12556 The most abundant and common tissue in plants 5 510 Recommended Questions Has non-vacuolated cytoplasm, Is living and has cellulosic wall... 2 Edit Delete
12555 The most abundant and common tissue in plants 5 510 Recommended Questions Has non-vacuolated cytoplasm, Is living and has cellulosic wall... 2 Edit Delete
12554 Which of the following is correct with respect to lenticels? a. Phellogen forms parenchymatous cells on the outer side b. It is a lens-shaped opening c. Helps in exchange of gases d. Present mostly in woody trees 5 510 Recommended Questions a & b correct, c & d correct... 4 Edit Delete
12553 The tissue belonging to bark but not to periderm is 5 510 Recommended Questions Vascular cambium, Secondary phloem... 2 Edit Delete
12552 A tree can be killed by removing its bark, as this also removes the ________. 5 510 Recommended Questions Phelloderm only, Phellem only... 4 Edit Delete
12551 The term 'bark' includes: 5 510 Recommended Questions I, II and III only, I, II and IV only... 4 Edit Delete
12550 Which of the following matching is correct? 5 510 Recommended Questions A - II, IV, VII, VIII; B - I, III, V, VI, A - I, II, VIII, VIII; B - III, IV, V, VI... 3 Edit Delete
12549 Lenticels are found in 5 510 Recommended Questions young stems, old stems... 2 Edit Delete
12548 Match the Column I and II. 5 510 Recommended Questions 1 2 3 4, 3 1 2 4... 3 Edit Delete
12547 The cork cambium, cork and secondary cortex are collectively called: 5 510 Recommended Questions phellogen, periderm... 2 Edit Delete
12546 In which character an isobilateral leaf differs from the dorsiventral leaf? 5 510 Recommended Questions Scattered vascular bundles, Undifferentiated mesophylls... 2 Edit Delete
12545 Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following: 5 510 Recommended Questions Tyloses in vessels, Closure of stomata... 3 Edit Delete
12544 Bulliform cells: 5 510 Recommended Questions Are found in dorsiventral leaves and help in photosynthesis., Are found in dorsiventral leaves and help in minimizing water loss.... 3 Edit Delete
12543 Which is the correct set of options with respect to the following? 5 510 Recommended Questions Dicot stem - Differentiated ground tissue. Monocot stem - Endarch xylem. Dicot leaf - Isobilateral leaf. Monocot leaf - Dorsiventral leaf., Dicot stem - Scattered vascular bundle. Monocot stem - Arranged vascular bundle. Dicot leaf - Amphistomatic. Monocot leaf - Hypostomatic.... 3 Edit Delete
12542 Match the following A. Cuticle i. guard cells B. Bulliform cells ii. single layer C. Stomata iii. waxy layer D. Epidermis iv. empty colourless cell 5 510 Recommended Questions A-iii, B-iv, C-i, D-ii, A-i, B-ii, C-iii, D-iv... 1 Edit Delete
12541 In monocot leaf 1. Stomata is present on both surface of epidermis 2. Mesophyll is not differentiated into palisade and spongy parenchyma 3. There is no parenchyma 4. Both 1 and 2 5 510 Recommended Questions Stomata is present on both surface of epidermis, Mesophyll is not differentiated into palisade and spongy parenchyma... 4 Edit Delete
12540 The similar size of vascular bundle in monocot leaf is due to 5 510 Recommended Questions Reticulate venation, Parallel venation... 2 Edit Delete
12539 The tissues present between the adaxial and abaxial epidermis are 5 510 Recommended Questions mesophyll, chlorophyll... 4 Edit Delete
12538 Dicotyledonous leaf is also known as 5 510 Recommended Questions Dorsiventral leaf, Bi-facial leaf... 3 Edit Delete
12537 Mark the correct one with respect to bundle sheath in a dicot leaf 5 510 Recommended Questions Sclerenchymatous, Collenchymatous... 3 Edit Delete
12536 In a leaf, oval cells with large intercellular spaces and radially arranged columnar cells without intercellular spaces are placed respectively towards 5 510 Recommended Questions Adaxial and abaxial epidermis, Abaxial and adaxial epidermis... 2 Edit Delete
12535 Spongy tissue is generally situated towards which side in dorsiventral leaf? 5 510 Recommended Questions Abaxial, Adaxial... 1 Edit Delete
12534 The main parts of the lamina of the dorsiventral leaf are 5 510 Recommended Questions epidermis, mesophyll tissues... 4 Edit Delete
12533 The size of the vascular bundles are dependent on the size of the 5 510 Recommended Questions veins, air cavities... 1 Edit Delete
12532 Consider the following statements about dicot leaf: I: The epidermis which covers both the upper surface (adaxial epidermis) and lower surface (abaxial epidermis) of the leaf has a conspicuous cuticle. II: More stomata present on upper surface. III: Mesophyll is differentiated into palisade and spongy parenchyma. Which of the above statements are true? 5 510 Recommended Questions I and II only, I and III only... 2 Edit Delete
12531 Midrib and veins of the represent 5 510 Recommended Questions vascular bundle, cortex... 1 Edit Delete
12530 Vascular bundles are surrounded by a layer of thick walled _______. 5 510 Recommended Questions Bundle sheath cells, Cuticle... 1 Edit Delete
12529 Which one is true for dicot leaf 5 510 Recommended Questions veins thickness vary, reticulate venation is present... 4 Edit Delete
12528 Which of the following is true for palisade parenchyma? 5 510 Recommended Questions adaxially placed, elongated cells... 4 Edit Delete
12527 The tissue between the upper and lower epidermis is called 5 510 Recommended Questions Chlorophyll, Mesophyll... 2 Edit Delete
12526 Which one is true for spongy parenchyma 5 510 Recommended Questions abaxially placed to palisade parenchyma, oval or round & loosely arranged cells... 4 Edit Delete
12525 Select incorrect statements from the given below: (i) Endodermis with Casparian strips are found in the dicot stem. (ii) The endodermis is a part of the stele. (iii) Open vascular bundles are found in some monocots. (iv) Bulliform cells are found in the upper epidermis in the isobilateral leaf. 5 510 Recommended Questions (i) and (ii), (ii) and (iii)... 3 Edit Delete
12524 In monocot stem, ground tissue is made up of 5 510 Recommended Questions collenchyma, sclerenchyma... 3 Edit Delete
12523 Dicot stem share a common feature with monocot stem that is both have 5 510 Recommended Questions Well developed large pith, Conjoint vascular bundles... 2 Edit Delete
12522 Consider the following statements: In a monocot stem- I: Hypodermis is collenchymatous. II: Vascular bundle are collateral and closed. III: Trichomes are usually absent. Which of the above statements are true? 5 510 Recommended Questions I and II only, I and III only... 3 Edit Delete
12521 Vascular bundle are __________ and surrounded by __________ bundle sheath in monocot stem. 5 510 Recommended Questions scattered, sclerenchymatous, arranged, sclerenchymatous... 1 Edit Delete
12520 Which type of cells are not present in Phloem of monocot stem 5 510 Recommended Questions Companion cell, sieve tubes... 3 Edit Delete
12519 The diagram given below belongs to - 5 510 Recommended Questions Dicot stem having conjoint and collateral vascular bundles, Monocot stem having conjoint and collateral vascular bundles... 2 Edit Delete
12518 The hypodermis of the monocot stem is made up of 5 510 Recommended Questions collenchyma, sclerenchyma... 2 Edit Delete
12517 The given transverse section is of: 5 510 Recommended Questions Monocot stem, Dicot stem... 1 Edit Delete
12516 Read the different components from I to IV in the list given below and tell the correct order of the components with reference to their arrangement from the outer side to the inner side in a woody dicot stem. 5 510 Recommended Questions III, IV, II, I, I, II, IV, III... 3 Edit Delete
12515 Cortex is the region found between? 5 510 Recommended Questions epidermis and stele, pericycle and endodermis... 1 Edit Delete
12514 Pith is made up of __________ cells and __________ spaces are present between them. 5 510 Recommended Questions Parenchymatous, intracellular, Parenchymatous, intercellular... 2 Edit Delete
12513 Interfascicular cambium in a dicot stem is formed from 5 510 Recommended Questions Pericycle cells, Cortex cells... 3 Edit Delete
12512 Tissue which provides mechanical strength and flexibility to young dicot stem is present in 5 510 Recommended Questions Pith, Endodermis... 3 Edit Delete
12511 In dicot stem hypodermis is made up of __________ cells while general cortex is made up of __________. 5 510 Recommended Questions collencyma, sclerenchyma, collencyma, parenchyma... 2 Edit Delete
12510 The hypodermis of dicot stem and monocot stem is made up of 5 510 Recommended Questions collenchyma and sclerenchyma respectively, collenchyma in both... 1 Edit Delete
12509 In between the vascular bundles, radially placed parenchymatous cells constitute 5 510 Recommended Questions medullary rays, cortex... 1 Edit Delete
12508 Epiblema of roots is equivalent to 5 510 Recommended Questions Pericycle, Endodermis... 3 Edit Delete
12507 How many of the following are similar between monocot and dicot root? (Vascular bundles, pericycle, endodermis, pith, cortex, epidermis) 5 510 Recommended Questions 4, 3... 1 Edit Delete
12506 Consider the following statements: With respect to secondary growth in dicot root- I: The vascular cambium is completely secondary in origin. II: The primary phloem bundles are gradually crushed and not seen in older roots. III: Phellogen gives rise to secondary tissue on the outside and forms the phellem. Which of the above statements are true? 5 510 Recommended Questions I and II only, I and III only... 4 Edit Delete
12505 Casparian strips are present in the endodermis of 5 510 Recommended Questions Monocot stem, Dicot root... 2 Edit Delete
12504 In the dicot root, the vascular cambium originates from: 5 510 Recommended Questions Tissue located below the phloem bundles and a portion of pericycle tissue above protoxylem, Cortical region... 1 Edit Delete
12503 Which of the following plays an important role in lateral root growth in dicot root? 5 510 Recommended Questions Endodermis, Pericycle... 2 Edit Delete
12502 How many of the following constitute the stele? Vascular bundles, pericycle, endodermis, pith, cortex, epidermis 5 510 Recommended Questions 4, 3... 2 Edit Delete
12501 As compared to the monocot root, the dicot root has/shows 5 510 Recommended Questions Large and well-developed pith, Primary growth only... 4 Edit Delete
12500 Compared to a dicot root, a monocot root has: 5 510 Recommended Questions Many xylem bundles, Inconspicuous annual rings... 1 Edit Delete
12499 In dicot roots, the initiation of the lateral roots and the vascular cambium during the secondary growth takes place in: 5 510 Recommended Questions Pericycle, Endodermis... 1 Edit Delete
12498 The cells which give rise to a part of vascular cambium in main root and lateral roots are 5 510 Recommended Questions Parenchymatous cells of pericycle., Collenchymatous cells of endodermis.... 1 Edit Delete
12497 Which of the given figure represents the internal structural details of a monocot root? 5 510 Recommended Questions Option 1, Option 2... 2 Edit Delete
12496 Lateral roots originate from 5 510 Recommended Questions Pericycle, Epidermis... 1 Edit Delete
12495 The innermost layer of the cortex is called 5 510 Recommended Questions pericycle, endodermis... 2 Edit Delete
12494 The parenchymatous cells which lie between the xylem and phloem are called 5 510 Recommended Questions Complementry cells, Conjuctive cells... 2 Edit Delete
12493 All the tissues that lie inner to the endodermis are called as 5 510 Recommended Questions vascular bundle, stele... 2 Edit Delete
12492 Casparian strips are present in 5 510 Recommended Questions endodermis, epidermis... 1 Edit Delete
12491 The number of xylem bundles in dicot root is 5 510 Recommended Questions 2 to 4, less than 2... 1 Edit Delete
12490 Casparian strips are barrel shaped cells in which tangential and radial walls are impermeable to water because of 5 510 Recommended Questions suberin deposition, cellulose deposition... 1 Edit Delete
12489 The outermost layer of the root is 5 510 Recommended Questions epidermis, endodermis... 1 Edit Delete
12488 Which of the following is the largest tissue system 5 510 Recommended Questions Epidermal tissue system, Vascular tissue system... 3 Edit Delete
12487 How many of the followings are the parts of Ground Tissue System Epidermis, Hypodermis, general cortex, endodermis, pericycle, medullary rays, vascular bundle, pith, leaf mesophyll 5 510 Recommended Questions 9, 7... 2 Edit Delete
12486 The ground tissue system is constituted by all of these, except 5 510 Recommended Questions Medullary rays, Pericycle... 4 Edit Delete
12485 Hypodermis is the part of 5 510 Recommended Questions Ground tissue system, Epidermal tissue system... 1 Edit Delete
12484 In Ground tissue system, parenchymatous cells are usually present in 5 510 Recommended Questions cortex, pericycle... 4 Edit Delete
12483 In Ground tissue system, parenchymatous cells are usually present in 5 510 Recommended Questions cortex, pericycle... 4 Edit Delete
12482 In leaves the ground tissue consist of thin walled chloroplast containing cells and is called____. 5 510 Recommended Questions Mesophyll, Chlorophyll... 1 Edit Delete
12481 Ground tissue system is present in 5 510 Recommended Questions root, stem... 4 Edit Delete
12480 Conjoint open vascular bundles are present in 5 510 Recommended Questions stem of dicots only, stem of dicots and gymnosperms... 2 Edit Delete
12479 The vascular bundle shown in the diagram is most likely to be seen in: 5 510 Recommended Questions Monocot stem, Dicot stem... 2 Edit Delete
12478 In radial vascular bundle xylem and phloem are present on ___________radii and in an ___________manner. 5 510 Recommended Questions different and consecutive, same and alternate... 3 Edit Delete
12477 Vascular bundles in monocotyledons are considered closed because: 5 510 Recommended Questions a bundle sheath surrounds each bundle, cambium is absent... 2 Edit Delete
12476 Radial vascular bundle arrangement is most common in 5 510 Recommended Questions roots, stem, and roots... 1 Edit Delete
12475 In Dicots, Secondary growth is possible because of 5 510 Recommended Questions cambium, xylem and Phloem... 1 Edit Delete
12474 Match the following and choose the correct option from below A Cuticle i. Guard cells B Bulliform cells ii. Single layer C Stomata iii. Waxy layer D Epidermis iv. Empty colourless cell 5 510 Recommended Questions A-iii B-iv C-i D-ii, A-i B-ii C-iii D-iv... 1 Edit Delete
12473 Epidermal hairs on stems known as trichomes 5 510 Recommended Questions May sometimes be secretory in function, Have vascular supply... 1 Edit Delete
12472 Given below is the diagram of a stomatal apparatus. In which of the following, all the four parts labelled as A, B, C and D are correctly identified: 5 510 Recommended Questions A: Guard cell, B: Stomatal aperture, C: Subsidiary Cell, D: Epidermal Cell, A: Epidermal Cell, B: Guard Cell, C: Stomatal aperture, D: Subsidiary cell... 3 Edit Delete
12471 Root hairs are __________ and formed from _________ zone of root. 5 510 Recommended Questions unicellular, maturation, multicellular, elongation... 1 Edit Delete
12470 Mark the incorrect statement with respect to guard cells in stomata 5 510 Recommended Questions In grasses these are dumb-bell shaped, They possess chloroplasts... 4 Edit Delete
12469 45 5 510 Recommended Questions 1, 2... 1 Edit Delete
12468 Specialised epidermal cells surrounding the guard cells are called? 5 510 Recommended Questions subsidiary cells, bulliform cells... 1 Edit Delete
12467 Cuticle is not found in 5 510 Recommended Questions Stem, Branches... 4 Edit Delete
12466 Stomata in grass leaves are: 5 510 Recommended Questions Dumb-bell shaped, Kidney shaped... 1 Edit Delete
12465 The most important function of the trichomes is: 5 510 Recommended Questions They prevent water loss due to transpiration, They prevent herbivory... 1 Edit Delete
12464 Epidermis in plant is generally 5 510 Recommended Questions Single layered, Double layered... 1 Edit Delete
12463 A waxy thick layer which prevent water loss is 5 510 Recommended Questions Cuticle, Guard cell... 1 Edit Delete
12462 Fibres are likely to be absent in 5 510 Recommended Questions Secondary phloem, Secondary xylem... 3 Edit Delete
12461 A vessel less piece of stem possessing prominent sieve tubes would belong to 5 510 Recommended Questions Pines, Eucalyptus... 4 Edit Delete
12460 Sieve tube elements are long, tube-like structures, arranged longitudinally and associated with the companion cells. A mature sieve element 5 510 Recommended Questions Has a small vacuole, Lacks nucleus and cytoplasm... 4 Edit Delete
12459 What is the number of correct statements amongst the following regarding the phloem tissue of plants? I: Gymnosperms lack albuminous cells and sieve cells. II: The companion cells are specialized parenchymatous cells. III: Phloem parenchyma is absent in most of the monocotyledons. IV: Phloem fibers are generally absent in the primary phloem. 5 510 Recommended Questions 2, 3... 3 Edit Delete
12458 Select the incorrect statement with respect to bast fibres a. Generally absent in primary phloem b. Elongated, branched with blunt ends c. Parenchymatous in nature d. Becomes dead at maturity 5 510 Recommended Questions a & d, b & d... 3 Edit Delete
12457 Which of the following is not the component of secondary phloem? 5 510 Recommended Questions Protophloem, Bast fibers... 1 Edit Delete
12456 Match the column I with column II Column I a. Xylem parenchyma b. Sclereids c. Phloem parenchyma d. Vessel Column II i. Absent in most of the monocots ii. Long cylindrical tube-like structure iii. Food and tannins iv. Fruit walls of nuts 5 510 Recommended Questions a(i), b(ii), c(iii), d(iv), a(ii), b(iv), c(iii), d(i)... 3 Edit Delete
12455 What is incorrect for companion cell? 5 510 Recommended Questions It is specialized parenchymatous cell., It helps in maintaining the pressure gradient in the sieve tubes.... 3 Edit Delete
12454 Phloem fibres are made up of 5 510 Recommended Questions Parenchymatous cells, Sclerenchymatous cells... 2 Edit Delete
12453 Phloem in angiosperm is composed of a. Sieve tube element b. Companion cell c. Phloem parenchyma d. Phloem fibres e. Tracheids f. Vessels 5 510 Recommended Questions a,b,c,d, b,c,d,e... 1 Edit Delete
12452 Phloem of gymnosperm consist of 5 510 Recommended Questions Albuminous cells and Sieve cells, Sieve tubes and companion cells... 1 Edit Delete
12451 Companion cells are closely associated with 5 510 Recommended Questions sieve elements, vessel elements... 1 Edit Delete
12450 Phloem parenchyma is absent in most of the 5 510 Recommended Questions Dicotyledons, Monocotyledons... 2 Edit Delete
12449 Function of sieve tubes are controlled by 5 510 Recommended Questions Nucleus of sieve tube, Nucleus of companion cell... 2 Edit Delete
12448 A piece of wood having no vessels (trachea) must belong to 5 510 Recommended Questions Teak, Mango... 3 Edit Delete
12447 How many elements of the xylem are dead 5 510 Recommended Questions four, three... 2 Edit Delete
12446 In flowering plants which of the following are main water transporting element 5 510 Recommended Questions Tracheids, Vessels... 3 Edit Delete
12445 Which among the following cannot be a feature of given diagram? 5 510 Recommended Questions It is a long cylindrical tube like structure, Having lignified walls... 4 Edit Delete
12444 The type of primary xylem when protoxylem lies towards the pith is known as 5 510 Recommended Questions endarch, exarch... 1 Edit Delete
12443 The type of primary xylem when protoxylem lies towards the pith is known as 5 510 Recommended Questions endarch, exarch... 1 Edit Delete
12442 Primary xylem is of two types, they are- 5 510 Recommended Questions Protoxylem and metaxylem, Xylem parenchyma and xylem fibres... 1 Edit Delete
12441 Tracheids, vessels, xylem fibres and xylem parenchyma are components of 5 510 Recommended Questions Simple tissue, Xylem... 2 Edit Delete
12440 A plant tissue, when stained, showed the presence of hemicellulose and pectin in the cell walls of its cells. The tissue represents 5 510 Recommended Questions collenchyma, sclerenchyma... 1 Edit Delete
12439 Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is 5 510 Recommended Questions Xylem, Sclerenchyma... 3 Edit Delete
12438 Sclerenchymatous fibres are 5 510 Recommended Questions thick walled, elongated and pointed cells, contains simple and bordered pits... 4 Edit Delete
12437 Choose odd with respect to collenchyma 5 510 Recommended Questions Living mechanical tissue, Intercellular space is absent in angular type... 3 Edit Delete
12436 The main function of the plant tissue shown below is: 5 510 Recommended Questions Storage of nutrients, Providing buoyancy to submerged plants... 3 Edit Delete
12435 Identify the correct statement regarding collenchyma in plants: 5 510 Recommended Questions They occur in layers below the epidermis of monocotyledonous plants., Cells are much thickened at the corners due to the deposition of lignin.... 4 Edit Delete
12434 Collenchyma is characterised by 5 510 Recommended Questions Absence of protoplast at maturity, Supporting young stem and leaf petiole... 2 Edit Delete
12433 Which of the following has unevenly thick cell wall, has a primary wall (cellulose) and a secondary wall (hemicellulose or pectin), and is a simple, living, primarily mechanical tissue of the plant body? 5 510 Recommended Questions Parenchyma, Collenchyma... 2 Edit Delete
12432 Lignified cell wall is characteristic feature of 5 510 Recommended Questions Parenchyma, Collenchyma... 3 Edit Delete
12431 Identify the mismatched pair: 5 510 Recommended Questions Thick walled, elongated and pointed cells present in hypodermis of dicot stem, Forms the major component within plant organs... 1 Edit Delete
12430 Cells having cellulose, hemicellulose and pectin deposits on the wall and shows its presence commonly in the petiole of leaf and growing green stems belong to 5 510 Recommended Questions Sclerenchyma, Collenchyma... 2 Edit Delete
12429 Which of the following component of phloem is mainly responsible for the storage of food material and other substances like resins, latex and mucilage? 5 510 Recommended Questions Sieve tube, Companion cell... 4 Edit Delete
12428 In parenchyma, all cells are isodiametric and 5 510 Recommended Questions Thin-walled, Thick-walled... 1 Edit Delete
12427 Parenchymal cells have _______ walls and are made up of __________. 5 510 Recommended Questions Thick, cellulose, Thin, cellulose... 2 Edit Delete
12426 All of the given characteristics are related to parenchyma tissue except 5 510 Recommended Questions Composed of living cells, Generally isodiametric cells... 3 Edit Delete
12425 Which one is true of parenchyma 5 510 Recommended Questions help in storage, secretion and photosynthesis, intercellular spaces are schizogenous in origin... 4 Edit Delete
12424 A. China rose is a member of the cotton family. B. Axile placentation is found in okra and lily. C. The staminal tube is a distinguishable feature of the mallow family. D. Polyadelphous stamens are found in peas. E. The members of the Mallow family have epipetalous stamens. Given above are five statements. How many of the above statements are true? 5 509 Recommended Questions Five, Three... 3 Edit Delete
12423 Which of the following features does not belong to Hibiscus? 1. Actinomorphic flowers 2. Pentamerous calyx 3. Twisted Corolla 4. Exstipulated leaves 5 509 Recommended Questions Actinomorphic flowers, Pentamerous calyx... 4 Edit Delete
12422 What is the common name of the Malvaceae family? 5 509 Recommended Questions Mallow family, Makoi family... 1 Edit Delete
12421 Consider the following statements: I: Whorled phyllotaxy is seen in Alstonia. II: Flowers of mustard, datura and chilli are actinomorphic. III: The ovary in plum, peach and rose is epigynous. Which of the above statements are true? 5 509 Recommended Questions I and II only, I and III only... 1 Edit Delete
12420 Which of the following would not be a character of Asparagus? 5 509 Recommended Questions Actinomorphic flower, Imbricate aestivation... 2 Edit Delete
12419 155 5 509 Recommended Questions 1, 2... 1 Edit Delete
12418 Aestivation of petals in the flower of cotton is correctly shown in: 5 509 Recommended Questions Option 1, Option 2... 3 Edit Delete
12417 The following diagram can represent the position of the ovary in: 5 509 Recommended Questions Brinjal, Guava... 3 Edit Delete
12416 An inferior ovary: 5 509 Recommended Questions is situated on the receptacle above the perianth and androecium., is positioned below the sites of attachment for perianth and androecium.... 2 Edit Delete
12415 Perigynous flowers are found in 5 509 Recommended Questions Guava, Cucumber... 4 Edit Delete
12414 Bilateral symmetry is found in the flower of 5 509 Recommended Questions Cassia, Mustard... 1 Edit Delete
12413 Select incorrectly matched pair. 1. Inferior ovary — Guava 2. Aestivation with unequal petals — Cotton sized petals 3. Polyadelphous condition — Citrus 4. Irregular flower — Canna 5 509 Recommended Questions Inferior ovary — Guava, Aestivation with unequal petals — Cotton sized petals... 2 Edit Delete
12412 Which among the following plants has these characteristics - actinomorphic flower, hypogynous, syncarpous and parietal placentation? 5 509 Recommended Questions China rose, Marigold... 4 Edit Delete
12411 A flower is hypogynous and the ovary is said to be superior in 5 509 Recommended Questions Mustard, Plum... 1 Edit Delete
12410 Which of the following combinations is false? 1. Apocarpous — Carpels free — Lotus, Rose. 2. Syncarpous — Carpels fused — Mustard, tomato. 3. Placentation — arrangement of ovules within ovary. 4. Arrangement of ovules within ovary — ovulation. 5 509 Recommended Questions Apocarpous — Carpels free — Lotus, Rose., Syncarpous — Carpels fused — Mustard, tomato.... 4 Edit Delete
12409 Select the incorrect match with respect to placentation 5 509 Recommended Questions Basal - Marigold, Free central - Primrose... 4 Edit Delete
12408 Which among the following is a characteristic of pea and bean? 5 509 Recommended Questions Monadelphous stamens, Marginal placentation... 2 Edit Delete
12407 In which of the given plant's placenta develops at the base of the ovary and a single ovule is attached to it? 5 509 Recommended Questions Tomato, Lemon, Mustard, Argemone... 4 Edit Delete
12406 142 5 509 Recommended Questions 1, 2... 1 Edit Delete
12405 Select incorrect match 5 509 Recommended Questions Polyadelphous stamens - Lemon, Diadelphous stamens - Pea... 4 Edit Delete
12404 Select the correct match 5 509 Recommended Questions Lily - Epiphyllous stamen, Argemone - Axile placentation... 1 Edit Delete
12403 Androecium of Citrus and Bombax plants is 5 509 Recommended Questions Synandrous, Monadelphous... 3 Edit Delete
12402 Developing on position of calyx, corolla and androecium with respect to the ovary on thalamus the flowers are divided into how many categories? 5 509 Recommended Questions Two, Three... 2 Edit Delete
12401 Select a correct match 5 509 Recommended Questions Staminode - Solanaceae, Actinomorphic flower - Cassia, Bean, Gulmohur... 4 Edit Delete
12400 If gynoecium is situated in the centre and other floral parts are located on the rim of the thalamus almost at the same level, then the flower is said to be 5 509 Recommended Questions Perigynous, Epigynous... 1 Edit Delete
12399 Match column I with column II and select the correct option. Column I a. A₂₊₄ b. Epiphyllous androecium c. Ovary inferior d. Gamosepalous Column II (i) Tomato (ii) Lily (iii) Mustard (iv) Epigynous flower 5 509 Recommended Questions a (iii), b (i), c (iv), d (ii), a (ii), b (iv), c (i), d (iii)... 3 Edit Delete
12398 Half superior-half inferior ovary is found in the perigynous flower of 5 509 Recommended Questions Peach, China rose... 1 Edit Delete
12397 Valvate aestivation in corolla is found in 5 509 Recommended Questions Cotton, Calotropis... 2 Edit Delete
12396 132 5 509 Recommended Questions 1, 2... 1 Edit Delete
12395 In an inflorescence where flowers are borne laterally in acropetal succession, the position of the youngest floral bud shall be 5 509 Recommended Questions proximal, distal... 2 Edit Delete
12394 Cymose inflorescence is dissimilar to racemose inflorescence in 5 509 Recommended Questions Having limited growth of the main inflorescence axis., Having young flowers at top.... 1 Edit Delete
12393 Cymose inflorescence is identified by: 1. Basipetal arrangement of flowers on the main axis (peduncle) 2. The limited growth of the main axis as main axis terminates in a flower 3. Both (1) and (2) 4. Presence of sessile flower 5 509 Recommended Questions Basipetal arrangement of flowers on the main axis (peduncle), The limited growth of the main axis as main axis terminates in a flower... 3 Edit Delete
12392 The pitcher in pitcher plant is a modification of 5 509 Recommended Questions leaf base, Petiole... 3 Edit Delete
12391 In Australian Acacia plant, the 5 509 Recommended Questions Leaves are small and long-lived, Petioles carry out the functions of the lamina... 2 Edit Delete
12390 Which of the following statement is incorrect? 5 509 Recommended Questions In Calotropis, a pair of leaves arise at each node and lie opposite to each other, A bud is present in the axil of both simple and compound leaves... 3 Edit Delete
12389 Select the incorrect match 5 509 Recommended Questions Opposite phyllotaxy - Calotropis, Parallel venation - Banana... 4 Edit Delete
12388 Which of the given feature is not related to mustard? 5 509 Recommended Questions Superior ovary., Variable length of filaments of stamens.... 4 Edit Delete
12387 Bud is present in axil of petiole in 5 509 Recommended Questions Compound leaf and leaflet, Simple and compound leaf... 2 Edit Delete
12386 A phyllotaxy, where more than two leaves arise at a node, found in 5 509 Recommended Questions Calotropis, Alstonia... 2 Edit Delete
12385 A phyllotaxy, where more than two leaves arise at a node, found in 5 509 Recommended Questions Calotropis, Alstonia... 2 Edit Delete
12384 Which of the following shows whorled phyllotaxy? 5 509 Recommended Questions Mustard, China rose... 3 Edit Delete
12383 Scutellum is the first leaf of: 5 509 Recommended Questions Monocot, Dicot... 1 Edit Delete
12382 Whorled, simple leaves with reticulate venation are present in: 5 509 Recommended Questions Alstonia, Calotropis... 1 Edit Delete
12381 Consider the following statements: I: The roots hair are unicellular and arise from the region of maturation. II: Terminal buds of stems may get modified to thorns. III: Leaves originate from shoot apical meristem and are arranged in an acropetal order. Which of the above statements are true? 5 509 Recommended Questions I and II only, I and III only... 2 Edit Delete
12380 116 5 509 Recommended Questions 1, 2... 1 Edit Delete
12379 Which of the following statement is true? 5 509 Recommended Questions In Alstonia the petioles expand, become green, and synthesize food., Leaves are modified into tendrils for climbing as in pumpkins.... 4 Edit Delete
12378 Select the odd one out with respect to veins 5 509 Recommended Questions Provide rigidity to the leaf blade, Act as channels of transport for water and minerals... 3 Edit Delete
12377 Photosynthetic organ originates from ______ meristem and arranged in ______ order. 5 509 Recommended Questions Lateral, basipetal, Root apical, acropetal... 3 Edit Delete
12376 Citrus differs from Opuntia in 5 509 Recommended Questions Showing adventive embryony, Having zygotic embryos... 3 Edit Delete
12375 In gourds and watermelon, the tendril is formed by the modification of 5 509 Recommended Questions Extra axillary bud., Axillary bud and leaf respectively.... 1 Edit Delete
12374 Choose the incorrect statement. 5 509 Recommended Questions Stilt roots are found in sugarcane, Pneumatophores are respiratory roots... 3 Edit Delete
12373 Choose the incorrect statement. 5 509 Recommended Questions Stilt roots are found in sugarcane, Pneumatophores are respiratory roots... 3 Edit Delete
12372 Modified aerial stem with the branching of unlimited growth as the photosynthetic structure is 5 509 Recommended Questions Flattened in Opuntia and Euphorbia, Fleshy and cylindrical in Euphorbia... 2 Edit Delete
12371 A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots is found in: 5 509 Recommended Questions Chrysanthemum, Pistia... 2 Edit Delete
12370 Which one of the following organisms is correctly matched with its three characteristics? 1. Pea: C₃ pathway, Endospermic seed, Vexillary aestivation 2. Tomato: Twisted aestivation, Axile placentation, Berry 3. Onion: Bulb, Imbricate aestivation, Axile placentation 4. Maize: C₃ pathway, Closed vascular bundles, Scutellum 5 509 Recommended Questions Pea: C₃ pathway, Endospermic seed, Vexillary aestivation, Tomato: Twisted aestivation, Axile placentation, Berry... 3 Edit Delete
12369 Identify the correct statement regarding the stem morphology from the following: I: Stems bear only axillary buds. II: Axillary buds may get modified into thorns as in Citrus III: Stem tendrils develop from axillary buds as in gourds. 5 509 Recommended Questions Only I and II, Only I and III... 3 Edit Delete
12368 Thorns of Bougainvillea are the modification of 5 509 Recommended Questions Apical buds, Vegetative buds... 4 Edit Delete
12367 Find out the wrongly matched pair :- 5 509 Recommended Questions Tuber - Potato, Leaf buds - Banana... 2 Edit Delete
12366 Pneumatophores are a modification of 5 509 Recommended Questions Prop root for exchange of gases, Taproot for retention of moisture... 4 Edit Delete
12365 101 5 509 Recommended Questions 1, 2... 1 Edit Delete
12364 Which is incorrect with respect to pneumatophore? 5 509 Recommended Questions They are found in all aquatic plants, They are also known as respiratory roots... 1 Edit Delete
12363 Which is incorrect with respect to pneumatophore? 5 509 Recommended Questions They are found in all aquatic plants, They are also known as respiratory roots... 1 Edit Delete
12362 Taproots of the following plant are modified to store food. 5 509 Recommended Questions Sweet potato, Turnip... 2 Edit Delete
12361 The edible part of the carrot is a modified: 5 509 Recommended Questions Adventitious root, Underground stem... 4 Edit Delete
12360 In some plants, root modified their shape and structure to perform 5 509 Recommended Questions Absorption, Conduction of water... 4 Edit Delete
12359 Pneumatophores are found in: 1. The vegetation is found in marshy and saline lake 2. The vegetation is found in saline soil 3. Xerophytes 4. Epiphytes 5 509 Recommended Questions The vegetation is found in marshy and saline lake, The vegetation is found in saline soil... 1 Edit Delete
12358 In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order: 5 509 Recommended Questions Root cap, cell division, cell maturation, cell enlargement, Cell division, cell enlargement, cell maturation, root cap... 4 Edit Delete
12357 In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order: 5 509 Recommended Questions Root cap, cell division, cell maturation, cell enlargement, Cell division, cell enlargement, cell maturation, root cap... 4 Edit Delete
12356 The cells of which of the following regions of the root are responsible for growth of its length? 5 509 Recommended Questions Root cap, Region of meristematic activity... 3 Edit Delete
12355 The region of part of root that increases the surface area for water absorption is 5 509 Recommended Questions Root cap, Zone of elongation... 4 Edit Delete
12354 Consider the following statements: I: Whorled phyllotaxy is seen in Alstonia. II: Flowers of mustard, datura and chilli are actinomorphic. III: The ovary in plum, peach and rose is epigynous. Which of the above statements are true? 5 509 Recommended Questions I and II only, I and III only... 1 Edit Delete
12353 Match each item in Column I with one item in Column II and choose your answer from the codes given below: Column I (Flower) - Column II (Position of the Ovary): I. Sunflower - 1. Epigynous, II. Mustard - 2. Hypogynous, III. Plum - 3. Perigynous. Codes: 1. I-1, II-2, III-3; 2. I-2, II-3, III-1; 3. I-2, II-1, III-3; 4. I-3, II-2, III-1 5 509 Recommended Questions 1 2 3, 2 3 1... 1 Edit Delete
12352 Among the terms listed below, those that are not technically correct names for a floral whorl are (i) androecium (ii) carpel (iii) corolla (iv) sepal 5 509 Recommended Questions (i) and (iv), (iii) and (iv)... 3 Edit Delete
12351 Consider the following statements: I: Imbricate aestivation is seen in Cassia and gulmohar. II: In Dianthus and Primrose, placentation is free central. III: Seeds of pea, gram and bean are non-endospermous. Which of the above statements are true? 5 509 Recommended Questions I and II only, I and III only... 4 Edit Delete
12350 In a typical complete, bisexual and hypogynous flower, the arrangement of floral whorls on the thalamus from the outermost to the innermost is 5 509 Recommended Questions calyx, corolla, androecium and gynoecium, calyx, corolla, gynoecium and androecium... 1 Edit Delete
12349 The condition of the ovary shown in the given diagram can be described as: 5 509 Recommended Questions Perigynous, Epigynous... 1 Edit Delete
12348 Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary? 5 509 Recommended Questions Five, Six... 2 Edit Delete
12347 In the ray florets of sunflower, the condition of the flower is termed as: 5 509 Recommended Questions Superior, Inferior... 3 Edit Delete
12346 In a unilocular ovary with a single ovule, the placentation is 5 509 Recommended Questions marginal, basal... 2 Edit Delete
12345 Ovary is one-chambered but it becomes two chambered due to the formation of a false septum in: 5 509 Recommended Questions Dianthus and Primrose, Mustard and Argemone... 2 Edit Delete
12344 Keel is the characteristic feature of flower of 5 509 Recommended Questions tulip, Indigofera... 2 Edit Delete
12343 China rose is not characterized by: 5 509 Recommended Questions Axile placentation, Valvate aestivation... 2 Edit Delete
12342 The following diagram can represent the position of the ovary in: 5 509 Recommended Questions Brinjal, Guava... 3 Edit Delete
12341 In marginal placentation, the ovules are arranged: 5 509 Recommended Questions Along the inner wall of the carpel in a syncarpous ovary, Along the margin of single carpel... 2 Edit Delete
12340 In vexillary aestivation: 5 509 Recommended Questions The standard overlaps the wings, The standard overlaps the keel... 1 Edit Delete
12339 The type of placentation shown in the given figure is seen in: 5 509 Recommended Questions Dianthus, Argemone... 1 Edit Delete
12338 The technical term used for the androecium in a flower of China rose (Hibiscus rosa sinensis) is 5 509 Recommended Questions monadelphous, diadelphous... 1 Edit Delete
12337 Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is: 5 509 Recommended Questions Free central, basal... 4 Edit Delete
12336 In marginal placentation, the placenta forms a ridge along the: 5 509 Recommended Questions Ventral suture of the ovary, Dorsal suture of the ovary... 1 Edit Delete
12335 Perigynous flowers are found in 5 509 Recommended Questions Guava, Cucumber... 4 Edit Delete
12334 When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as 5 509 Recommended Questions vexillary, imbricate... 2 Edit Delete
12333 Zygomorphic flower is not found in: 5 509 Recommended Questions Cassia, Canna... 2 Edit Delete
12332 Flowers are zygomorphic in 5 509 Recommended Questions Gulmohar, tomato... 1 Edit Delete
12331 Axile placentation is present in 5 509 Recommended Questions dianthus, lemon... 2 Edit Delete
12330 If the margins of sepals or petals overlap one another but not in particular direction, the aestivation is called 5 509 Recommended Questions Imbricate, Valvate... 1 Edit Delete
12329 Trimerous flowers, superior ovary axile placentation is characteristic of: 5 509 Recommended Questions Liliaceae, Papilionaceae... 1 Edit Delete
12328 What type of placentation is seen in sweet pea? 5 509 Recommended Questions Basal, Axile... 4 Edit Delete
12327 The ovary is half inferior in flowers of 5 509 Recommended Questions cucumber, cotton... 4 Edit Delete
12326 Which of the following is an incorrect match? (1) Perigynous flower - Plum, rose and peach (2) Monadelphous - Pea (3) Epigynous flower - Guava, cucumber, and ray florets of sunflower (4) Polyadelphous - Citrus 5 509 Recommended Questions Perigynous flower - Plum, rose and peach, Monadelphous - Pea... 2 Edit Delete
12325 The term 'polyadelphous' is related to 5 509 Recommended Questions gynoecium, androecium... 2 Edit Delete
12324 Match the Column-I with Column-II: Column-I (Aestivation in Corolla) A. Valvate B. Twisted C. Imbricate D. Vexillary (papilionaceous) Column-II (Examples) I. China rose, Lady's finger, cotton II. Calotropis III. Cassia, Gulmohur IV. Pea, Beans 5 509 Recommended Questions A - II, B - I, C - III, D - IV, A - II, B - I, C - IV, D - III... 1 Edit Delete
12323 The placentation having only single ovule is 5 509 Recommended Questions Marginal, Axile... 3 Edit Delete
12322 Find out the False statement from below ones: I. Calyx and corolla are reproductive organs of a flower. II. Zygomorphic flower can be divided into two equal radial halves in any radial plane. III. Flowers without bracts are termed as bracteate. IV. Parthenocarpic fruit is formed after fertilization of the ovary. V. In legumes seed is non-endospermic. VI. Ovary is inferior in Fabaceae. VII. A fertile stamen is called staminode. VIII. Radical buds develop on roots. 5 509 Recommended Questions I, II, III, IV, VI, VII, I, II, V, VIII... 1 Edit Delete
12321 Match the columns A and B: Column I | Column II (a) Marginal placentation | (i) Marigold (b) Axile placentation | Dianthus (c) Parietal placentation | Argemone (d) Free central placentation | Chinarose (e) Basal placentation | Pea 5 509 Recommended Questions (v) (iv) (iii) (ii) (i), (v) (iii) (iv) (i) (ii)... 1 Edit Delete
12320 Placentation in tomato and lemon is 5 509 Recommended Questions parietal, free central... 4 Edit Delete
12319 Flowers are zygomorphic in: 5 509 Recommended Questions gulmohur, tomato... 1 Edit Delete
12318 Match the Column-I and Column-II with Column-III: Column-I | Column-II | Column-III A. Marginal | I. | a. Sunflower, Marigold B. Axile | II. | b. Dianthus, Primrose C. Parietal | III. | c. Mustard, Argemone D. Free Central | IV. | d. Chinarose, Tomato, Lemon E. Basal | V. | e. Pea 5 509 Recommended Questions A - V, e; B - II, d; C - I, c; D - III, b; E - IV, a, A - I, e; B - II, d; C - III, c; D - IV, b; E - V, a... 1 Edit Delete
12317 Match the following figures with I, II and III: I. Hypogynous flower II. Perigynous flower III. Epigynous flower 5 509 Recommended Questions A - I, B - II, C - III, A - I, B - III, C - II... 1 Edit Delete
12316 An example of axile placentation is 5 509 Recommended Questions Argemone, Dianthus... 3 Edit Delete
12315 A drupe develops in 5 509 Recommended Questions wheat, pea... 4 Edit Delete
12314 In which type of placentation ovary is one chambered and the placenta bearing ovules develop on the inner wall of the ovary and, the number of placenta corresponds to the number of carpels? 5 509 Recommended Questions Marginal, Parietal... 2 Edit Delete
12313 Choose correct pair Placentation - Example 1. Marginal - Dianthus, Silene 2. Axile - Pea, Acacia 3. Parietal - Lemon, Petunia 4. Basal - Triticum, Sunflower 5 509 Recommended Questions 1. Marginal - Dianthus, Silene, 2. Axile - Pea, Acacia... 4 Edit Delete
12312 A type of placentation in which placenta forms a ridge along the ventral suture of ovary and ovules are borne on this ridge forming two rows 5 509 Recommended Questions Parietal, Marginal... 2 Edit Delete
12311 Which of the given figures represents the aestivation of corolla in Gulmohur and Cassia? 5 509 Recommended Questions 1., 2.... 2 Edit Delete
12310 Correct position of floral parts over thalamus in the mustard plant is: 5 509 Recommended Questions Gynoecium occupies the highest position, while the other parts are situated below it., Margin of the thalamus grows upward, enclosing the ovary completely, and other parts arise below the ovary.... 1 Edit Delete
12309 In which plant, petals in a whorl just touch one another at the margin, without overlapping in the floral bud? 5 509 Recommended Questions Cassia, Calotropis... 2 Edit Delete
12308 Position of ovary is superior in 5 509 Recommended Questions Hypogynous flower, Perigynous flower... 1 Edit Delete
12307 In an inflorescence where flowers are borne laterally in acropetal succession, the position of the youngest floral bud shall be 5 509 Recommended Questions proximal, distal... 2 Edit Delete
12306 Cymose inflorescence is present in 5 509 Recommended Questions Solanum, Sesbania... 1 Edit Delete
12305 Select incorrect statement with respect to racemose inflorescence 5 509 Recommended Questions The main axis continues to grow, Peduncle bears flowers in basipetal/centrifugal manner... 2 Edit Delete
12304 In racemose type of branching: 5 509 Recommended Questions Branches continue to grow indefinitely and give off further branches laterally in a basipetal order, Branches continue to grow indefinitely and give off further branches laterally in an acropetal order... 2 Edit Delete
12303 39 5 509 Recommended Questions 1, 2... 1 Edit Delete
12302 38 5 509 Recommended Questions 1, 2... 1 Edit Delete
12301 The examples of modified leaves are 5 509 Recommended Questions tendrils of pea, spines of cacti... 4 Edit Delete
12300 Which group contains insectivorous plants? 5 509 Recommended Questions Bladderwort and Cuscuta, Cuscuta and Solanum... 3 Edit Delete
12299 Venation is a term used to describe the pattern of arrangement of 5 509 Recommended Questions floral organs, flower in inflorescence... 3 Edit Delete
12298 Study the following statements and choose the correct option. I. Buds are present in the axil of leaflets of the compound leaf. II. Pulvinus leaf-base is present in some leguminous plants. III. In Alstonia, the petioles expand, become green and synthesize food. IV. Opposite phyllotaxy is seen in guava. 5 509 Recommended Questions II and IV are correct but I and III are wrong, I and III are correct but II and IV are wrong... 1 Edit Delete
12297 Pinnately compound leaves have all the following features except 5 509 Recommended Questions leaflets are attached to rachis or its branches, Possess a bud in the leaf axil... 3 Edit Delete
12296 32 5 509 Recommended Questions 1, 2... 1 Edit Delete
12295 Which of the following shows whorled phyllotaxy? 5 509 Recommended Questions Mustard, China rose... 3 Edit Delete
12294 Identify A and B leaves: 5 509 Recommended Questions A - Pinnately compound leaf, B - Palmately compound leaf, A - Palmately compound leaf, B - Pinnately compound leaf... 1 Edit Delete
12293 Leaf is 5 509 Recommended Questions Exogenous in origin, Endogenous in origin... 1 Edit Delete
12292 Leaves originate from- 5 509 Recommended Questions shoot apical meristems and arranged acropetal order, shoot apical meristem and arranged in a basipetal order... 1 Edit Delete
12291 Photosynthetic organ originates from ______ meristem and arranged in ______ order. 5 509 Recommended Questions Lateral, basipetal, Root apical, acropetal... 3 Edit Delete
12290 Which of the following statements is false about a leaf? 1. A leaf is said to be simple, when its lamina is entire or when incised, the incisions do not touch the margin 2. A leaf is said to be compound when the incisions of lamina reach up to the midrib breaking into several leaflets 3. Leaf is the most important vegetative organ for photosynthesis 4. Leaf is not a transpiratory organ 5 509 Recommended Questions A leaf is said to be simple, when its lamina is entire or when incised, the incisions do not touch the margin, A leaf is said to be compound when the incisions of lamina reach up to the midrib breaking into several leaflets... 4 Edit Delete
12289 Which one of the following is a xerophytic plant in which the stem is modified into a flat green and succulent structure: 5 509 Recommended Questions Casuarina, Hydrilla... 4 Edit Delete
12288 Bougainvillea and Citrus plants are protected from browsing animals as 5 509 Recommended Questions Adventitious buds get modified into thorns, Axillary buds get modified into spines... 3 Edit Delete
12287 An example of an edible underground stem is 5 509 Recommended Questions carrot, groundnut... 4 Edit Delete
12286 In Bougainvillea, thorns are the modifications of 5 509 Recommended Questions stipules, adventitious root... 3 Edit Delete
12285 21 5 509 Recommended Questions 1, 2... 1 Edit Delete
12284 A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots is found in: 5 509 Recommended Questions Chrysanthemum, Pistia... 2 Edit Delete
12283 Which of the following is not a stem modification? 5 509 Recommended Questions Thorns of citrus, Tendrils of cucumber... 4 Edit Delete
12282 Stem tendrils are not seen in: 5 509 Recommended Questions Grapevine, Watermelon... 3 Edit Delete
12281 When a shoot tip transforms into a flower, 5 509 Recommended Questions It is always solitary, The flower is always short-lived... 1 Edit Delete
12280 Leaves are modified into tendrils in: 5 509 Recommended Questions Parkinsonia, Pea... 2 Edit Delete
12279 Offset is one internode-long runner and its each node bears rosette of leaves and a tuft of roots. It is found in aquatic plants like: 5 509 Recommended Questions Hydrilla, Pistia... 4 Edit Delete
12278 Thorn of Citrus and Bougainvillea is modified: 5 509 Recommended Questions Stem, Root... 1 Edit Delete
12277 Underground modification of stem occurs for following special functions, except 5 509 Recommended Questions Storage of food, Vegetative propagation... 3 Edit Delete
12276 Sweet potato is a modified 5 509 Recommended Questions Rhizoid, Stem... 3 Edit Delete
12275 Sweet potato is a modified: 5 509 Recommended Questions Stem, Adventitious root... 2 Edit Delete
12274 Which of the following is incorrect about A, B, C and D: (1) Tap roots of carrot, turnip and adventitious root of sweet potato, get swollen and store food (2) Pneumatophores help to get oxygen for respiration (3) Pneumatophore is found in the plants that grow in sandy soil (4) A, B and C are underground roots but D grows vertically upwards 5 509 Recommended Questions (1) Tap roots of carrot, turnip and adventitious root of sweet potato, get swollen and store food, (2) Pneumatophores help to get oxygen for respiration... 3 Edit Delete
12273 Prop roots and stilt roots are found respectively in 5 509 Recommended Questions Rhizophora and turnip, Banyan and maize... 2 Edit Delete
12272 Pneumatophores are seen in: 5 509 Recommended Questions Rhizophora, Banyan tree... 1 Edit Delete
12271 Rearrange the following zones as seen in the root in the vertical section and choose the correct option: I: Root hair zone, II: Zone of meristems, III: Root cap zone, IV: Zone of maturation, V: Zone of elongation 5 509 Recommended Questions III, II, V, I, IV, I, II, III, IV, V... 1 Edit Delete
12270 Roots developed from parts of the plant other than radicles are called 5 509 Recommended Questions tap roots, fibrous roots... 3 Edit Delete
12269 The region responsible for growth in the length of the root is: 5 509 Recommended Questions A, B... 2 Edit Delete
12268 Which of the following zone of the root has thin cell wall, dense cytoplasm and large nucleus? 5 509 Recommended Questions Region of maturation, Region of elongation... 4 Edit Delete
12267 Which of the following is not the lateral branches of the roots? 5 509 Recommended Questions Tertiary roots, Secondary roots... 3 Edit Delete
12266 Root hairs develop from the region of 5 509 Recommended Questions maturation, elongation... 1 Edit Delete
12265 The cells proximal to the merismatic zone in root tip represents 5 509 Recommended Questions Zone of cell elongation, Zone of deacceleration... 1 Edit Delete
12264 Read the following statements. (a) Gymnosperms are heterosporous. (b) Bryophytes have well developed vessels and sieve tubes. (c) Strobilus is found in the main plant body of Equisetum. (d) Antheridia are absent but archegonia are present in female strobili of gymnosperms. Choose the correct option. 5 508 Recommended Questions All of these, (a), (c) and (d)... 2 Edit Delete
12263 The features seen in the gymnosperm Cycas include: I. Coralloid roots II. Unbranched stems III. Pinnate persistent leaves for a few years IV. Male cones and megasporophylls borne on same plant 5 508 Recommended Questions I and II only, I and IV only... 3 Edit Delete
12262 Read the following and choose the incorrect statement 1. Majority of red algae are marine with greater concentrations found in the warmer areas. 2. Thallus of Marchantia is dorsiventral and closely appressed to the substrate. 3. In Sequoia, reduced male gametophyte is called pollen grain and its endosperm represents future sporophytes. 4. Wolffia is the smallest flowering plant. 5 508 Recommended Questions Majority of red algae are marine with greater concentrations found in the warmer areas., Thallus of Marchantia is dorsiventral and closely appressed to the substrate.... 3 Edit Delete
12261 Which of the following is/are correct for gymnosperms? (i) They are heterosporous. (ii) They are the first vascular plants. (iii) They possess fruits. (iv) They require water for fertilisation. 5 508 Recommended Questions Only (i), (i) and (ii)... 1 Edit Delete
12260 Besides paddy fields, cyanobacteria are also found inside vegetative part of: 5 508 Recommended Questions Cycas, Equisetum... 1 Edit Delete
12259 Select the mis-matched option. 5 508 Recommended Questions Selaginella : Heterosporous, Volvox : Colonial alga... 3 Edit Delete
12258 In gymnosperms, the ovule is naked because 5 508 Recommended Questions Ovary wall is absent, Integuments are absent... 1 Edit Delete
12257 Choose the incorrect match from following: 5 508 Recommended Questions Cycas - branched stem., Salvinia - heterosporous sporophyte.... 1 Edit Delete
12256 Read the following statements and select the option with correct statements (a) In Wolfia, the highly reduced female gametophyte present within ovule, is embryo sac. (b) The ploidy level of endosperm in Cycas and Eucalyptus is triploid. (c) Azolla is a water fern. (d) Majority of the red algae are marine with greater abundance in the warmer areas. 5 508 Recommended Questions (a) and (b) only, (b) and (c) only... 4 Edit Delete
12255 Cycas is classified as a gymnosperms due to its 5 508 Recommended Questions motile sperms, fruit formation... 3 Edit Delete
12254 Which of the following genera is associated with coralloid roots? 5 508 Recommended Questions Cycas, Taxus... 1 Edit Delete
12253 Classification of organisms on the basis of gene sequencing is 5 508 Recommended Questions Cytotaxonomy, Karyotaxonomy... 1 Edit Delete
12252 Under natural system of classification which of the following character is not considered? 5 508 Recommended Questions External features, Phylogeny... 2 Edit Delete
12251 Artificial systems gave equal weightage to 5 508 Recommended Questions Morphological and anatomical characters., Vegetative and sexual characters.... 2 Edit Delete
12250 Given below are three statements each with one blank. Select the option which correctly fill up the blanks in two statements (i) ______ systems gave equal weightage to vegetative and sexual characteristics. (ii) Number and codes are assigned to all the characters and the data are then processed in ______ taxonomy. (iii) ______ systems assume that organisms belonging to the same taxa have a common ancestor. 5 508 Recommended Questions (i) - Artificial, (iii) - Natural, (ii) - Phenetics, (iii) - Artificial... 4 Edit Delete
12249 Earlier classification (Before Whittaker) has placed which of the following in the same kingdom Plantae and now they are no more considered under plants? 5 508 Recommended Questions Monera, Protista and Fungi, Monera and Protista... 1 Edit Delete
12248 The classification given by Linnaeus was depending on 5 508 Recommended Questions Phytochemistry, Embryology... 3 Edit Delete
12247 According to phylogenetic classification organisms belonging to same taxa 5 508 Recommended Questions Are same in anatomy., Have same genetic constituent.... 3 Edit Delete
12246 Which of the following kingdoms is not introduced in the Whittaker's classification? 5 508 Recommended Questions Monera, Protista... 3 Edit Delete
12245 If we want to know evolutionary relationships between organisms then which classification will resolve it: 5 508 Recommended Questions Artificial classification, Natural classification... 4 Edit Delete
12244 Cytotaxonomy 5 508 Recommended Questions Based on cytological information like chromosome number, Based on cytological information like chromosome structure... 4 Edit Delete
12243 Numerical Taxonomy 5 508 Recommended Questions Carried out using computers, Based on all observable characteristics... 4 Edit Delete
12242 Select incorrect option with respect to given diagram 5 508 Recommended Questions Heterosporous., Aquatic fern.... 4 Edit Delete
12241 177 5 508 Recommended Questions 1, 2... 1 Edit Delete
12240 All the following pteridophytes belong to the Class Pteropsida except: 5 508 Recommended Questions Dryopteris, Pteris... 3 Edit Delete
12239 Select an incorrect match 1. Psilopsida - Psilotum 2. Sphenopsida - Selaginella 3. Lycopsida - Lycopodium 4. Pteropsida - Dryopteris 5 508 Recommended Questions Psilopsida - Psilotum, Sphenopsida - Selaginella... 2 Edit Delete
12238 Identify the incorrect statement regarding green algae? 5 508 Recommended Questions They contain chl a, chl b as well as carotenoids., The chloroplasts may be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species.... 3 Edit Delete
12237 Pyrenoid is 5 508 Recommended Questions Storage bodies located in cytoplasm of chlorophyceae, Storage bodies located in cytoplasm of Phaeophyceae... 3 Edit Delete
12236 Examples of Green alga is not 5 508 Recommended Questions Chlamydomonas, Volvox, Ulothrix, Spirogyra... 4 Edit Delete
12235 In chlorophyceae and phaeophyceae, the type of sexual reproduction is 5 508 Recommended Questions Isogamous, Anisogamous... 4 Edit Delete
12234 Which one of the following pairs of plants are not seed producers: 5 508 Recommended Questions Fern and Funaria, Funaria and Ficus... 1 Edit Delete
12233 Which of the following characteristics are common in both Selaginella and Pinus? (i) Spores are of two types. (ii) Vascular tissues are not present. (iii) Main plant body is sporophyte. (iv) Male and female gametophytes are retained on the sporophyte. 5 508 Recommended Questions (i), (ii) and (iv), (i), (iii) and (iv)... 3 Edit Delete
12232 Which one of the following pairs is wrongly matched? 5 508 Recommended Questions Salvinia - Prothallus, Viroids - RNA... 1 Edit Delete
12231 In Pteridophytes reduction division occurs during 5 508 Recommended Questions spore formation, gamete formation... 1 Edit Delete
12230 In which of the following plants, strobili are not formed? 5 508 Recommended Questions Equisetum, Cycas... 3 Edit Delete
12229 Development of the zygotes into young embryo takes within the female gametophytes in 5 508 Recommended Questions Adiantum., Selaginella.... 2 Edit Delete
12228 A feature common in gametophyte of both mosses and maximum ferns is- 5 508 Recommended Questions Independent existence, Both are monoecious in nature... 1 Edit Delete
12227 The given diagram shows: 5 508 Recommended Questions An alga that lacks flagellated cells, A liverwort... 3 Edit Delete
12226 The spreading of living pteridophyte is limited and is restricted to narrow geographical region because of 5 508 Recommended Questions Growth requirements of gametophyte (cool, damp and shady places)., Requirement of water for fertilisation.... 4 Edit Delete
12225 Pick the correct group consisting of all genera exhibiting homospory. 5 508 Recommended Questions Lycopodium, Psilotum, Selaginella, Equisetum, Equisetum, Pteris, Salvinia, Psilotum... 4 Edit Delete
12224 Which one is wrongly matched? 5 508 Recommended Questions Red algae – Porphyra, Coralloid roots – Cycas... 4 Edit Delete
12223 In pteridophytes, gametophyte that develops in the homosporous species is usually 5 508 Recommended Questions Monoecious and has events, precursor to the seed habit., Dioecious and does not lead to seed habit.... 3 Edit Delete
12222 Heterosporous pteridophyte includes both: 5 508 Recommended Questions Lycopodium and Equisetum, Selaginella and Salvinia... 2 Edit Delete
12221 Which one is correct about heterosporous pteridophytes? 1. Microspore and megaspores develop into the male and the female gametophytes respectively. 2. The female gametophyte are retained on the parent sporophyte for a variable period. 3. The development of the zygote into the embryo takes place within the female gametophyte. 4. All 5 508 Recommended Questions 1, 2... 4 Edit Delete
12220 Leafy stage develops from the secondary protonema as a 5 508 Recommended Questions Apical bud, Axillary bud... 3 Edit Delete
12219 Identify the incorrect statement regarding mosses: 5 508 Recommended Questions Leaves are one cell thick except at the midrib and lack stomata, The first gametophyte stage is protonema, that is creeping and green... 4 Edit Delete
12218 In the following diagram A, B, C and D represent 5 508 Recommended Questions A - Seta, B - Leaves, C- Rhizoids, D - Capsule, A - Leaf, B - Rhizoids, C- Scales, D - Root hair... 3 Edit Delete
12217 Archegoniophore is present in: 5 508 Recommended Questions Chara, Adiantum... 4 Edit Delete
12216 Gemmae are the specialized structures produced in liverworts. These are 5 508 Recommended Questions Non-green, multi-cellular, asexual buds which develop in gemma cups., Green, multi-cellular, asexual buds which develop in gemma cups.... 2 Edit Delete
12215 Which of the following statement is true for bryophyta: 5 508 Recommended Questions Along with water absorption roots also provide anchorage to plants, Sporophyte is dominant... 3 Edit Delete
12214 Water is essential for Bryophyta: 5 508 Recommended Questions For fertilization and homosporous nature, Water should be filled in the archegonium for fertilization... 3 Edit Delete
12213 Moss sporophyte does not possess 5 508 Recommended Questions Elaters, Seta... 1 Edit Delete
12212 Gametophyte and sporophyte are independent of each other in which of the following groups? 5 508 Recommended Questions Pteridophytes, Angiosperms... 1 Edit Delete
12211 Archegoniophore is present in 5 508 Recommended Questions Chara, Adiantum... 4 Edit Delete
12210 Leafy stage develops from the secondary protonema as a 5 508 Recommended Questions Apical bud, Axillary bud... 3 Edit Delete
12209 145 5 508 Recommended Questions 1, 2... 1 Edit Delete
12208 Sporophyte in bryophytes is 5 508 Recommended Questions Parasitic on gametophyte, Formed by germination of meiospore... 1 Edit Delete
12207 Which of the following statement is incorrect regarding bryophytes? 5 508 Recommended Questions They are dependent on water for sexual reproduction., The main plant body is diploid... 2 Edit Delete
12206 Members of red algae are mostly marine, occurring both at surface water and at great depths in oceans except for a few fresh water species. These algae usually 5 508 Recommended Questions Reproduce asexually by motile spores, Show oogamous reproduction by motile gametes... 4 Edit Delete
12205 Find out the incorrect statement about the Rhodophyceae. 1. Majority are marine with greater concentrations found in the warmer areas. 2. They are also found at great depths of oceans where relatively little light penetrates. 3. Usually reproduce vegetatively by fragmentation. 4. They reproduce asexually by biflagellate zoospores. 5 508 Recommended Questions 1, 2... 4 Edit Delete
12204 140 5 508 Recommended Questions 1, 2... 1 Edit Delete
12203 Which of the following is not true about red algae? 5 508 Recommended Questions Predominance of r-phycoerythrin in their body, Majority of them are found in colder areas... 2 Edit Delete
12202 Phycocyanin is the major pigment in: 5 508 Recommended Questions Red algae, Blue-green algae... 1 Edit Delete
12201 Study the following diagram carefully and select the correct statement given below for this plant 5 508 Recommended Questions It is a source of carrageenan, It shows the haplontic life cycle... 4 Edit Delete
12200 The members of phaeophyceae are characterized by all, except 5 508 Recommended Questions Presence of chlorophyll a, c and fucoxanthin pigments., Production of pear-shaped and biflagellated asexual spores.... 4 Edit Delete
12199 In Phaeophyceae, the spores (zoospores) are 5 508 Recommended Questions Pyriform and bear 2 flagella (one longitudinal and other transverse)., Pear-shaped and bear 2 flagella that are laterally attached.... 2 Edit Delete
12198 Choose the incorrectly matched pair: 5 508 Recommended Questions Ulothrix - Zygote is single celled diploid generation, Spirogyra - Zygote is a resistant structure... 4 Edit Delete
12197 Asexual reproduction by pear shaped biflagellate zoospores is seen in most: 5 508 Recommended Questions Green algae, Brown algae... 2 Edit Delete
12196 Leaf like photosynthetic organ is associated with algal group 5 508 Recommended Questions Showing only oogamous reproduction, Having predominance of r-phycoerythrin... 3 Edit Delete
12195 Mannitol is a sugar alcohol. It is as stored food in: 5 508 Recommended Questions Fucus, Gracillaria... 1 Edit Delete
12194 Stipe, hold fast and frond are the terms associated with 5 508 Recommended Questions Gracilaria, Polysiphonia... 3 Edit Delete
12193 Asexual spores in brown algae are 5 508 Recommended Questions Non-motile sporangiospore., Biflagellated zoospores with two equal flagella.... 4 Edit Delete
12192 Find the incorrect match 5 508 Recommended Questions Isogametes - Cladophora, Isogametes - Rhizopus... 3 Edit Delete
12191 Green algae do not store food in the form of 5 508 Recommended Questions Protein, Starch... 4 Edit Delete
12190 In oogamy, fertilization involves: 5 508 Recommended Questions A large non-motile female gamete and a small motile male gamete, A large non-motile female gamete and a small non-motile male gamete... 1 Edit Delete
12189 Identify the following statements as true (T) or false (F) and select the option accordingly (A) Members of Rhodophyceae asexually reproduce by motile spores (B) Members of Phaeophyceae do not show isogamous type of sexual reproduction (C) In some green algae, food is stored in the form of oil droplets 5 508 Recommended Questions T F T, F F F... 3 Edit Delete
12188 Which of the following has flagellated male and female gametes? 5 508 Recommended Questions Ulothrix, Volvox... 1 Edit Delete
12187 Which of the following is an example of anisogamous reproduction in Algae? 5 508 Recommended Questions Eudorina, Volvox... 1 Edit Delete
12186 Which of the following is not correct with respect to Algae? 5 508 Recommended Questions Algae is in highly variable forms, Colonial form of algae - Volvox... 4 Edit Delete
12185 Algae is not 5 508 Recommended Questions Chlorophyll-bearing, Simple Thalloid... 3 Edit Delete
12184 Read the following statement and find out the incorrect statement. 1. Algae usually reproduce vegetatively by fragmentation, asexually by formation of different types of spores and sexually by formation of gametes. 2. Algae are classified into three classes, pteridophytes into four classes and angiosperms into two classes. 3. Algae are chlorophyll bearing simple, thalloid, autotrophic and largely aquatic organisms. 4. The plant body of algae is more differentiated than that of bryophytes. 5 508 Recommended Questions 1. Algae usually reproduce vegetatively by fragmentation, asexually by formation of different types of spores and sexually by formation of gametes., 2. Algae are classified into three classes, pteridophytes into four classes and angiosperms into two classes.... 4 Edit Delete
12183 Which of the following Algae shows anisogamy? 5 508 Recommended Questions Volvox., Eudorina.... 2 Edit Delete
12182 Cell wall of green algae is made up of 5 508 Recommended Questions Inner layer of chitin and outer layer of pectose., Inner layer of cutin and outer layer of pectin.... 4 Edit Delete
12181 Isogamous means 5 508 Recommended Questions Both the gametes are equally motile, Both the gametes are unequal in terms of motility... 3 Edit Delete
12180 Identify the incorrectly matched pair: 5 508 Recommended Questions Chlamydomonas: Microscopic unicellular algae, Volvox: Colonial algae... 4 Edit Delete
12179 Algin 5 508 Recommended Questions Water holding substance, Obtained from brown algae... 4 Edit Delete
12178 Anisogamous 5 508 Recommended Questions Gametes dissimilar in size, Gametes are similar in size but not in motility... 1 Edit Delete
12177 Choose the correct statement. 5 508 Recommended Questions Many species of Porphyra, Laminaria and Sargassum are among 70 species of marine algae used as food., Agar is used to grow microbes and in preparations of ice creams and jellies.... 4 Edit Delete
12176 Chlorella is not 5 508 Recommended Questions An unicellular alga, Rich in proteins... 4 Edit Delete
12175 Blue Green algae comes under 5 508 Recommended Questions Monera, Brown Algae... 1 Edit Delete
12174 Algae are useful because they 5 508 Recommended Questions are large in number, are used in alcoholic fermentation... 3 Edit Delete
12173 Agar is not used in 5 508 Recommended Questions To grow microbes, To prepare ice-creams... 4 Edit Delete
12172 Agar is not obtained from 5 508 Recommended Questions Gelidium, Gracilaria... 3 Edit Delete
12171 Which of the marine algae is not used as food? 5 508 Recommended Questions Laminaria, Sargassum... 4 Edit Delete
12170 The incorrect match for chlorophyll type is 5 508 Recommended Questions Chlorophyll 'a' .... Green algae, Chlorophyll 'd' ... Diatoms... 2 Edit Delete
12169 The members of Chlorophyceae- 5 508 Recommended Questions are not Green algae, are not unicellular, colonial, or filamentous plant body... 4 Edit Delete
12168 Oogamous 5 508 Recommended Questions Non-motile male gamete, Large male gamete... 3 Edit Delete
12167 Hydrocolloid is 5 508 Recommended Questions Water soluble substance, Water holding substance... 2 Edit Delete
12166 Algae may occur 5 508 Recommended Questions Moist Stones, Moist Soils and moist wood... 4 Edit Delete
12165 Algae can be found on 5 508 Recommended Questions Sloth bear, Dog... 1 Edit Delete
12164 Consider the following statements: Gymnosperms- I. Are plants in which the ovules remain exposed, both before and after fertilization. II. Have male and female gametophytes that have independent free-living existence. III. Are heterosporous. Which of the above statements are true? 5 508 Recommended Questions I and II only, I and III only... 2 Edit Delete
12163 Which of the following statements regarding gymnosperms are correct? I. Ovules are naked - not enclosed by any ovary wall before fertilisation but seeds that develop after fertilisation are covered. II. In all living Gymnosperms, sporophyte is dominant over the gametophyte. III. They are heterosporous. IV. The male and female gametophytes do not have an independent existence. 5 508 Recommended Questions I, II and III, I, III and IV... 3 Edit Delete
12162 Read the following statements: (a) More than one Archegonia (b) Show symbiotic association with Nitrogen fixing Cyanobacteria and fungus (c) Show heterosporous nature (d) Reduced male gametophyte is called a pollen grain. The above statement is related to which option? 5 508 Recommended Questions Bryophytes, Gymnosperms... 2 Edit Delete
12161 Read the following statements: A. The male or female cones or strobili may be borne on same tree in Pinus. B. In Cycas male cones and megasporophylls are borne on different trees. C. Stem of Cycas is branched and of Pinus and Cedrus is unbranched. D. In gymnosperms generally tap roots are found. Select the correct statements. 5 508 Recommended Questions A, B, A, B, D... 2 Edit Delete
12160 In which one of the following, the male and female gametophytes don't have free-living independent existence? 5 508 Recommended Questions Pteris, Funaria... 4 Edit Delete
12159 The gametophyte is not an independent, free living generation in 5 508 Recommended Questions Adiantum, Marchantia... 3 Edit Delete
12158 94 5 508 Recommended Questions 1, 2... 1 Edit Delete
12157 Read the statement (a - d): a. The male and female gametophytes do not have independent existence. b. The multicellular female gametophyte is also retained within megasporangium. c. The gametophytic generation is reduced. d. Sporophylls are aggregate to form cone like structures. The above statements belong to which group of plant kingdom? 5 508 Recommended Questions Bryophytes, Pteridophytes... 3 Edit Delete
12156 The leaf of Pinus is 5 508 Recommended Questions Needle shaped, Compound leaf... 1 Edit Delete
12155 Which of the following statement is correct? 5 508 Recommended Questions Ovules are not enclosed by the ovary wall in gymnosperms., Selaginella is heterosporous, while Salvinia is homosporous.... 1 Edit Delete
12154 Select the correct statement. 5 508 Recommended Questions Salvinia, Ginkgo and Pinus all are gymnosperms, Sequoia is one of the tallest trees... 2 Edit Delete
12153 Coralloid roots of gymnosperms are/have 5 508 Recommended Questions Irregular and possess large number of roots hairs., Symbiotic association with Rhizobium.... 3 Edit Delete
12152 88 5 508 Recommended Questions 1, 2... 1 Edit Delete
12151 The unbranched stem is character of which gymnosperm: 5 508 Recommended Questions Pinus, Cycas... 2 Edit Delete
12150 Pinus seeds cannot germinate and establish without fungal association. This is because: 5 508 Recommended Questions its seeds contain inhibitors that prevent germination., its embryo is immature.... 3 Edit Delete
12149 Match the following selected the correct option. Column - I: Column - II: A. Pteris (i) Gymnosperm, B. Cycas (ii) Bryophyte, C. Sphagnum (iii) Algae, D. Sargassum (iv) Pteridophyta 5 508 Recommended Questions A - (iv), B - (ii), C - (i), D - (iii), A - (iv), B - (i), C - (ii), D - (iii)... 2 Edit Delete
12148 Phylogenetic system of classification includes 5 508 Recommended Questions evolutionary trends only, genetic trends only... 1 Edit Delete
12147 Identify the incorrect statement: 1. The earliest systems of classification used only gross superficial morphological characters. 2. Linnaeus classification of plants was a natural classification as it was based on the androecium structure. 3. Artificial systems gave equal weightage to vegetative and sexual characteristics. 4. Natural classification systems are based on natural affinities among the organisms 5 508 Recommended Questions The earliest systems of classification used only gross superficial morphological characters., Linnaeus classification of plants was a natural classification as it was based on the androecium structure.... 2 Edit Delete
12146 Why are reproductive characters given more weightage during advanced classification? 5 508 Recommended Questions Vegetative characters are more or less constant over the generation, Reproductive characters are less constant over the generation... 3 Edit Delete
12145 The main reason of failure of artificial classification was 5 508 Recommended Questions It considered only vegetative characters, It gave more weightage to vegetative characters... 4 Edit Delete
12144 80 5 508 Recommended Questions 1, 2... 1 Edit Delete
12143 Identify the incorrect statement: 5 508 Recommended Questions Numerical Taxonomy is based on all observable characteristics., More weightage is given to reproductive characters and all other characters are given equal importance in numerical taxonomy.... 2 Edit Delete
12142 78 5 508 Recommended Questions 1, 2... 1 Edit Delete
12141 Chemotaxonomy 5 508 Recommended Questions Chemical constituents of the plant, Cell structure... 1 Edit Delete
12140 Who proposed a five-kingdom classification and named kingdoms as Monera, Protista, Fungi, Plantae and Animalia? 5 508 Recommended Questions Herbert Copeland, RH Whittaker... 2 Edit Delete
12139 Which one of the following is a correct statement? 5 508 Recommended Questions Pteridophyte gametophyte has a protonemal and leafy stage, In gymnosperms female gametophyte is free-living... 4 Edit Delete
12138 Chlamydomonas, Chlorella, Volvox, Ulothrix, Fucus, Dictyota, Polysiphonia, Gelidium, Acetabularia, Laminaria. Out of these 10 organisms, how many organisms belong to the class chlorophyceae, phaeophyceae and rhodophyceae respectively? 5 508 Recommended Questions 4, 3, 3, 4, 4, 2... 3 Edit Delete
12137 Vegetative reproduction in chlorophyceae takes place by 5 508 Recommended Questions Fragmentation + spore formation, Only spore formation... 1 Edit Delete
12136 Asexual reproduction in chlorophyceae is by 5 508 Recommended Questions Zoospore formation in Antheriodiophore, Fragmentation... 3 Edit Delete
12135 In the given diagrams, some of the algae have been labelled as A, B, C, D and E. Choose the correct option to identify these algae. 5 508 Recommended Questions Dictyota, Polysiphonia, Porphyra, Fucus, Laminaria, Porphyra, Dictyota, Laminaria, Fucus, Polysiphonia... 3 Edit Delete
12134 Which pair(s) is/are incorrectly matched? I. Phaeophyceae - Algin in cell wall II. Chlorophyceae - Laminarin is stored food III. Rhodophyceae - 2, unequal, lateral flagella 5 508 Recommended Questions Only II, Only III... 4 Edit Delete
12133 This picture is associated with an organism that belongs to a class. Which of the following features is not correct about that class? 5 508 Recommended Questions Three types of sexual reproduction, A variety of chloroplast in different species... 3 Edit Delete
12132 Chloroplasts can be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species. Such variety can be found in 5 508 Recommended Questions Chlorophyceae, Phaeophyceae... 1 Edit Delete
12131 Zoospore formed during asexual reproduction in chlorophyceae are 5 508 Recommended Questions Flagellated, Non-flagellated... 1 Edit Delete
12130 66 5 508 Recommended Questions 1, 2... 1 Edit Delete
12129 Colonial algae is 5 508 Recommended Questions Volvox, Ulothrix... 1 Edit Delete
12128 Consider the following statements: I: Pteridophytes are the first terrestrial plants to possess vascular bundles. II: Main plant body in pteridophytes is sporophyte which is differentiated into true stem and leaves. III: Genera like Selaginella and Salvinia are heterosporous. Which of the above statements are true? 5 508 Recommended Questions I and II only, I and III only... 4 Edit Delete
12127 Selaginella and Salvinia are considered to represent a significant step towards the evolution of seed habit because: 5 508 Recommended Questions Embryo develops in female gametophyte which is retained on parent sporophyte., Female gametophyte is free and gets dispersed like seeds.... 1 Edit Delete
12126 In ferns, Meiosis takes place at the time of: 5 508 Recommended Questions Spore formation, Spore germination... 1 Edit Delete
12125 In pteridophytes, antheridium are present in: 5 508 Recommended Questions Leafy gametophyte, Prothallus... 2 Edit Delete
12124 Gametophyte in the pteridophytes is: (i) Small, inconspicuous. (ii) Long-lived, unicellular. (iii) Mostly photosynthetic thalloid or saprophytic. (iv) Short lived, haploid. How many statements are correct with respect to gametophyte? 5 508 Recommended Questions Two, Three... 2 Edit Delete
12123 From an evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in: 5 508 Recommended Questions Gymnosperms, Liverworts... 4 Edit Delete
12122 A Prothallus is 5 508 Recommended Questions A structure in pteridophytes formed before the thallus develops, A sporophytic free living structure formed in pteridophytes... 3 Edit Delete
12121 In Pinus: I. The stem is branched II. Roots have fungal association in the form of mycorrhiza III. The male and female strobili are borne on different trees. Of the above statements: 5 508 Recommended Questions Only I is correct, Only II is correct... 3 Edit Delete
12120 Mark the incorrect statement (with respect to gymnosperms) 5 508 Recommended Questions Sequoia is one of the tallest tree species, Dimorphic roots, stem and leaves in pinus... 4 Edit Delete
12119 Ovules present on loose megasporophylls, unbranched stem and dicotyledonous condition are features related to 5 508 Recommended Questions Cycas, Pinus... 1 Edit Delete
12118 A prokaryotic autotrophic nitrogen fixing symbiont is found in 5 508 Recommended Questions Cycas, Cicer... 1 Edit Delete
12117 Select the correct statement: 5 508 Recommended Questions Salvinia, Ginkgo and Pinus all are gymnosperms, Sequoia is one of the tallest trees... 2 Edit Delete
12116 Conifers are adapted to tolerate extreme environmental conditions because of 5 508 Recommended Questions broad hardy leaves, superficial stomata... 3 Edit Delete
12115 Which of the following statements is incorrect about gymnosperms? 5 508 Recommended Questions They are heterosporous, Male and female gametophytes are free-living... 2 Edit Delete
12114 50 5 508 Recommended Questions 1, 2... 1 Edit Delete
12113 The leaves of gymnosperms 5 508 Recommended Questions Are not adapted to withstand extremes of temperature, May be simple or compound... 2 Edit Delete
12112 Which one of the following is considered important in the development of seed habit? 5 508 Recommended Questions Dependent sporophyte, Heterospory... 2 Edit Delete
12111 In heterosporous members of the pteridophyta: 1. Development of embryo takes place within the female gametophyte 2. Zygote produces a multicellular and undifferentiated sporophyte 3. Gametophyte is monoecious 4. Spore germination is exosporic 5 508 Recommended Questions Development of embryo takes place within the female gametophyte, Zygote produces a multicellular and undifferentiated sporophyte... 1 Edit Delete
12110 In ferns, fertilization does not involve: 5 508 Recommended Questions Archegonia, Water... 3 Edit Delete
12109 Which one of the following is heterosporous? 5 508 Recommended Questions Dryopteris, Salvinia... 2 Edit Delete
12108 In bryophytes and pteridophytes, transport of male gametes requires 5 508 Recommended Questions insects, birds... 3 Edit Delete
12107 The given diagram shows: 5 508 Recommended Questions An alga that lacks flagellated cells, A liverwort... 3 Edit Delete
12106 In mosses, the sex organs are seen in: 5 508 Recommended Questions Protonema stage, Leafy stage... 2 Edit Delete
12105 Secondary protonema of moss 5 508 Recommended Questions Helps in propagation by fragmentation, Helps in propagation by budding... 4 Edit Delete
12104 The plant body of moss (funaria) is 5 508 Recommended Questions completely sporophyte, predominantly sporophyte with gametophyte... 4 Edit Delete
12103 Read the following statements and select the incorrect ones: (a) Mosses have an elaborate mechanism of spore dispersal. (b) In liverworts, the haploid free living sporophyte is formed by spore germination. (c) Vegetative reproduction in Polythrichum occurs by budding in the secondary protonema. (d) Marchantia is a heterosporous bryophyte. (e) Growth of bog moss ultimately fills ponds and lakes with soil 5 508 Recommended Questions (a), (b) and (c), (d) and (e) only... 3 Edit Delete
12102 38 5 508 Recommended Questions 1, 2... 1 Edit Delete
12101 The gemmae produced by some liverworts function as: 5 508 Recommended Questions A water gathering structure, A light capturing structure... 4 Edit Delete
12100 Consider the following statements regarding bryophytes: I. Bryophytes are also called amphibians of the plant kingdom because they are dependent on water for sexual reproduction. II. They play an important role in plant succession on bare rocks. III. They lack true roots, stem or leaves. IV. The sex organs in bryophytes are multicellular. V. They produce biflagellate zoospores. VI. Archegonium is flask-shaped and produces a single egg. The number of corrected statements is 5 508 Recommended Questions 3, 4... 3 Edit Delete
12099 In a moss, the sporophyte: 5 508 Recommended Questions is partially parasitic on the gametophyte, produces gametes that give rise to the gametophyte... 1 Edit Delete
12098 The most primitive among the living vascular plants are the 5 508 Recommended Questions ferns, brown algae... 1 Edit Delete
12097 Male and female gametophytes are independent and free-living in 5 508 Recommended Questions mustard, castor... 4 Edit Delete
12096 Read the following statements regarding bryophytes and choose the incorrect option. 5 508 Recommended Questions Gametophytic phase is dominant in life cycle, Fertilisation takes place in presence of water... 3 Edit Delete
12095 Gametophyte of Bryophyte is 5 508 Recommended Questions Green and vascular., Independent, multicellular.... 2 Edit Delete
12094 Examine the figure given below and select the right option giving all the four parts (A, B, C and D) correctly identified: 5 508 Recommended Questions Antheridiophore, Male thallus, Globule, Roots, Archegoniophore, Female thallus, Gemma cup, Rhizoids... 2 Edit Delete
12093 Which of the following is responsible for peat formation? 5 508 Recommended Questions Marchantia, Riccia... 4 Edit Delete
12092 Mosses and ferns are found in moist and shady places because both 5 508 Recommended Questions require presence of water for fertilization, do not need sunlight for photosynthesis... 1 Edit Delete
12091 Consider the following statements: I: The stored food in Rhodophyceae is floridean starch. II: Cellulose and algin are present in the cell wall of Phaeophyceae. III: Chlorophyceae members have 2 laterally placed unequal flagella. Which of the above statements are true? 5 508 Recommended Questions I and II only, I and III only... 1 Edit Delete
12090 What is not true for red algae? 5 508 Recommended Questions Lack centriole and flagella, Accessory pigments include phycocyanin, phycoerythrin and allophycocyanin... 4 Edit Delete
12089 Consider the following features: I. Chlorophyll a and Chlorophyll c II. Fucoxanthin III. Floridean starch IV. Flagella 2 in number, unequal and lateral Which of these are seen in Phaeophyceae? 5 508 Recommended Questions I, II, III, I, II, IV... 2 Edit Delete
12088 Which one of the following statements is wrong? 1. Algin and carrageenan are products of algae 2. Agar-agar is obtained from Gelidium and Gracilaria 3. Chlorella and Spirulina are used as space food 4. Mannitol is stored food in Rhodophyceae 5 508 Recommended Questions Algin and carrageenan are products of algae, Agar-agar is obtained from Gelidium and Gracilaria... 4 Edit Delete
12087 Which one is wrongly matched? 1. Uniflagellate gametes - Polysiphonia 2. Biflagellate zoospores - Brown algae 3. Gemma cups - Marchantia 4. Unicellular organism - Chlorella 5 508 Recommended Questions Uniflagellate gametes - Polysiphonia, Biflagellate zoospores - Brown algae... 1 Edit Delete
12086 Which of the following algae is likely to be found in the deepest waters? 5 508 Recommended Questions Green, Brown... 3 Edit Delete
12085 Chlorophyll present in red algae is 5 508 Recommended Questions a, d, a, b... 1 Edit Delete
12084 An alga which can be employed as food for human beings: 5 508 Recommended Questions Ulothrix, Chlorella... 2 Edit Delete
12083 Consider the following statements regarding brown algae: I. The pigments are chl a, c and xanthophylls, fucoxanthin II. Storage food is laminarin and mannitol III. The cellulosic cell wall is covered with algin IV. They have a centrally located vacuole V. Their photosynthetic organs are called as fronds - leaf like structures VI. They have pear shaped biflagellate zoospores VII. They have two unequal laterally attached flagella. The number of correct statements is 5 508 Recommended Questions 5, 6... 3 Edit Delete
12082 Which of the following groups of algae produces algin? 5 508 Recommended Questions Phaeophyceae and Chlorophyceae, Rhodophyceae and Phaeophyceae... 4 Edit Delete
12081 Mannitol is the stored food in: 5 508 Recommended Questions Chara, Porphyra... 3 Edit Delete
12080 A student observed algae with chlorophyll 'a', 'd', and phycoerythrin. It should belong to: 5 508 Recommended Questions Phaeophyta, Rhodophyta... 2 Edit Delete
12079 The pyrenoids are made up of 5 508 Recommended Questions Proteinaceous centre and starchy sheath, Core of protein surrounded by fatty sheath... 1 Edit Delete
12078 Male gametes are flagellated in 5 508 Recommended Questions Polysiphonia, Anabaena... 3 Edit Delete
12077 Study the figure and find out incorrect statement. 5 508 Recommended Questions Contains laminarin or mannitol as reserve food., Life-cycle is diplontic.... 4 Edit Delete
12076 What is a, b, c, and d in the given table for algae? 5 508 Recommended Questions a : Starch; b : Phaeophyceae; c : 2, Lateral equal; d : Floridean starch, a : Glycogen; b : Phaeophyceae; c : 2 Lateral unequal; d : Floridean starch... 4 Edit Delete
12075 Sexual reproduction by non-flagellated but similar in size gametes is seen in: 5 508 Recommended Questions Chlamydomonas, Volvox... 3 Edit Delete
12074 If you are asked to classify the various algae into distinct groups, which of the following characters you should choose? 5 508 Recommended Questions Types of pigments present in the cell, Nature of stored food materials in the cell... 1 Edit Delete
12073 Identify the incorrect statement regarding algae: 5 508 Recommended Questions At least a half of the total carbon dioxide fixation on earth is carried out by algae through photosynthesis., Around 70 species of freshwater algae can be used as food.... 2 Edit Delete
12072 Match Column - I with Column - II and select the correct option from the codes given below. Column - I Column - II A. Chlorophyta (i) Equisetum B. Lycopsida (ii) Chara C. Phaeophyta (iii) Selaginella D. Sphenopsida (iv) Ectocarpus Codes: 5 508 Recommended Questions A - (ii), B - (iii), C - (iv), D - (i), A - (iv), B - (i), C - (ii), D - (iii)... 1 Edit Delete
12071 Which one of the following statements is wrong? 5 508 Recommended Questions Algae increases the level of dissolved oxygen in the immediate environment, Algin is obtained from red algae and carrageen from brown algae... 2 Edit Delete
12070 Select the wrong statement. 5 508 Recommended Questions Isogametes are similar in structure, function and behaviour, Anisogametes differ either in structure, function and behaviour... 3 Edit Delete
12069 Which one of the following statements is wrong? 5 508 Recommended Questions Algin and carrageenan are products of algae, Agar-agar is obtained from Gelidium and Gracilaria... 4 Edit Delete
12068 An example of colonial alga is 5 508 Recommended Questions Chlorella, Volvox... 2 Edit Delete
12067 Algae are useful 5 508 Recommended Questions Because at least half of the total carbon dioxide fixation on Earth is carried out by algae through photosynthesis., Algae being photosynthetic can increase the level of dissolved oxygen in their immediate environment... 4 Edit Delete
12066 Asexual reproduction is by the production of different types of spores. Out of that most common is 5 508 Recommended Questions Carpospore, Zoospores... 2 Edit Delete
12065 The reproduction in Algae occurs by 5 508 Recommended Questions Vegetative, Asexual... 4 Edit Delete
12064 If the potential difference across ends of a metallic wire is doubled, the drift velocity of charge carriers will become: 1 1011 Recommended Questions double, half... 1 Edit Delete
12063 The current in a wire varies with time according to the relation i = (3 + 2t) A. The amount of charge passing a cross section of the wire in the time interval t = 0 to t = 4.0 s would be: (where t is time in seconds) 1 1011 Recommended Questions 28 C, 30.5 C... 1 Edit Delete
12062 The current in a wire varies with time according to the equation I = (4 + 2t), where I is in ampere and t is in seconds. The quantity of charge which has passed through a cross-section of the wire during the time t = 2 s to t = 6 s will be: 1 1011 Recommended Questions 60 C, 24 C... 3 Edit Delete
12061 A charged particle having drift velocity of 7.5 × 10⁻⁴ ms⁻¹ in an electric field of 3 × 10⁻¹⁰ Vm⁻¹, has mobility of: 1 1011 Recommended Questions 2.5 × 10⁶ m²V⁻¹s⁻¹, 2.5 × 10⁻⁶ m²V⁻¹s⁻¹... 1 Edit Delete
12060 In a vernier callipers, one main scale division is x cm and n division of the vernier scale coincide with (n-1) divisions of the main scale. The least count (in cm) of the callipers is 1 1011 Recommended Questions $(\frac{n-1}{n})x$, $\frac{nx}{(n-1)}$... 3 Edit Delete
12059 A body travels uniformly a distance of $(13.8\pm0.2)\text{ m}$ in a time $(4.0\pm0.3)\text{ s}$. The velocity of the body within error limits is 1 1011 Recommended Questions $(3.45\pm0.2)ms^{-1}$, $(3.45\pm0.3)ms^{-1}$... 2 Edit Delete
12058 A student measures the distance traversed in free fall of a body, initially at rest in a given time. He uses this data to estimate g, the acceleration due to gravity. If the maximum percentage errors in measurement of the distance and the time are $e_1$ and $e_2$ respectively, the percentage error in the estimation of g is 1 1011 Recommended Questions $e_2-e_1$, $e_1+2e_2$... 2 Edit Delete
12057 A physical parameter a can be determined by measuring the parameters b, c, d and e using the relation $a=b^\alpha c^\beta /d^\gamma e^\delta$. If the maximum errors in the measurement of b, c, d and e are $b_1\%$, $c_1\%$, $d_1\%$, and $e_1\%$ respectively, then the maximum error in the value of a determined by the experiment is 1 1011 Recommended Questions $(b_1+c_1+d_1+e_1)\%$, $(\alpha b_1+\beta c_1+\gamma d_1+\delta e_1)\%$... 4 Edit Delete
12056 In the relation $x=cos(\omega t+kx)$, the dimensions of $\omega$ are 1 1011 Recommended Questions $[M^0LT]$, $[M^0L^{-1}T^0]$... 3 Edit Delete
12055 One femtometer is equivalent to 1 1011 Recommended Questions $10^{15}\text{ m}$, $10^{-15}\text{ m}$... 2 Edit Delete
12054 The dimensions of gravitational constant G and the moment of inertia are respectively 1 1011 Recommended Questions $ML^3T^{-2};ML^2T^0$, $M^{-1}L^3T^{-2};ML^2T^0$... 2 Edit Delete
12053 The maximum static friction on a body is $F=\mu N$. Here, $N=\text{normal reaction force on the body}$, $\mu=\text{coefficient of static friction}$. The dimensions of $\mu$ are 1 1011 Recommended Questions $[MLT^{-2}]$, $[M^0L^0T^0\theta^{-1}]$... 3 Edit Delete
12052 $1~Wb/m^2$ is equal to 1 1011 Recommended Questions $10^4$ gauss, $4\pi\times10^{-3}$ gauss... 1 Edit Delete
12051 200 5 502 Recommended Questions 1, 2... 1 Edit Delete
12050 The fruiting bodies of Agaricus are also known as 5 502 Recommended Questions cleistothecium, fairy rings... 3 Edit Delete
12049 Morels and Agaricus have edible fruiting bodies and belong to their respective class as. 5 502 Recommended Questions Ascomycetes and Basidiomycetes., Basidiomycetes and Ascomycetes.... 1 Edit Delete
12048 197 5 502 Recommended Questions 1, 2... 1 Edit Delete
12047 The sex organs are ______, but ________ is brought about by fusion of two vegetative or somatic cells of ________ strains or genotypes. The resultant structure is dikaryotic which ultimately gives rise to ______. 5 502 Recommended Questions Present, gametic contact, different, ascus., Absent, plasmogamy, different, basidium.... 2 Edit Delete
12046 How many basidiospores are formed on the basidium? 5 502 Recommended Questions 2, 3... 3 Edit Delete
12045 The asexual spores are generally not found in – 5 502 Recommended Questions Phycomycetes, Ascomycetes... 3 Edit Delete
12044 Which of the following does not belong to the class basidiomycetes? 5 502 Recommended Questions Agaricus, Ustilago... 3 Edit Delete
12043 The dikaryotic condition is represented as 5 502 Recommended Questions 2n, 3n... 4 Edit Delete
12042 Which of the following does not belong to class ascomycetes? 5 502 Recommended Questions Aspergillus, Neurospora... 4 Edit Delete
12041 Parasitic fungi of mustard is- 5 502 Recommended Questions Mucor, Albugo... 2 Edit Delete
12040 Which of the following statement is correct for Deuteromycetes? 5 502 Recommended Questions A large number of them are decomposers of litter, but do not help in mineral cycling, Mycelium is septate and branched... 2 Edit Delete
12039 The imperfect fungi such as Trichoderma 5 502 Recommended Questions Reproduce sexually by spore formation, Have aseptate mycelium... 3 Edit Delete
12038 Deuteromycetes are known as 'imperfect fungi' because – 5 502 Recommended Questions Only the sexual phases of these fungi are known., Because they do not have true cell wall... 3 Edit Delete
12037 Which of the following is correct about class Deuteromycetes? 1. Some members are saprophytes or parasites. 2. A large number of members are decomposers of litter and help in mineral cycling. 3. Alternaria, Colletotrichum and Trichoderma are deuteromycetes. 4. All 5 502 Recommended Questions 1, 2... 4 Edit Delete
12036 With respect to fungal sexual cycle, choose the correct sequence of events. 5 502 Recommended Questions Karyogamy, Plasmogamy and Meiosis, Meiosis, Plasmogamy and Karyogamy... 3 Edit Delete
12035 The basis for the division of the kingdom fungi into various classes is/are – (i). The morphology of the mycelium (ii). Mode of spore formation (iii). Fruiting bodies (iv). Type of pigment (v). Type of cell wall. 5 502 Recommended Questions a. i, iv and v, b. i, ii and iii... 2 Edit Delete
12034 Which of the following fungus lacks dikaryophase? 5 502 Recommended Questions Claviceps, Puccinia... 4 Edit Delete
12033 Coenocytic hyphae are- 5 502 Recommended Questions Continuous tubes filled with uninucleated cytoplasm, Continuous tubes filled with multinucleated cytoplasm... 2 Edit Delete
12032 181 5 502 Recommended Questions 1, 2... 1 Edit Delete
12031 Which of the following with respect to habitat is cosmopolitan? 5 502 Recommended Questions Protistan, Plants... 4 Edit Delete
12030 Fungi prefer to grow in- 5 502 Recommended Questions Warm and dry places, Warm and moist places... 2 Edit Delete
12029 An intervening dikaryotic stage occurs in- 5 502 Recommended Questions Phycomycetes and Ascomycetes, Ascomycetes and Basidiomycetes... 2 Edit Delete
12028 We usually observe some colourful growth on moist bread and rotten fruits, what does it belong to? 5 502 Recommended Questions Bacteria, Fungi... 2 Edit Delete
12027 Identify the incorrectly matched pair: 5 502 Recommended Questions Diatoms: Chief producers in oceans, Dinoflagellates: Red tides... 3 Edit Delete
12026 Euglenoids can be/have 5 502 Recommended Questions Predator, With cell wall... 1 Edit Delete
12025 .......of dinoflagellates have .....flagella .....lie in a furrow between wall plates 5 502 Recommended Questions All, 2, both, Many, 3, transverse flagella... 3 Edit Delete
12024 Which of the following statements regarding Euglenoids is not true? 5 502 Recommended Questions Instead of a cell wall, they have a lipid rich pellicle, They have two flagella, a short and a long one... 1 Edit Delete
12023 Which of the following have pigment similar to higher plants? 5 502 Recommended Questions Group which causes red tide., Group which is chief producer of ocean.... 3 Edit Delete
12022 171 5 502 Recommended Questions 1, 2... 1 Edit Delete
12021 Pellicle is found in 5 502 Recommended Questions Euglenoids, Dinoflagellates... 1 Edit Delete
12020 Which of the following property belongs to Dinoflagellates? 5 502 Recommended Questions Loose cellulose plates in cell wall, The outer surface has more loosening of cell wall than inner... 3 Edit Delete
12019 Organisms responsible for causing 'red tide' are also characterized by 1. Presence of stiff cellulosic plates. 2. Obligate saprophyte. 3. Presence of two longitudinal flagella. 4. Filamentous body made up of trichomes. 5 502 Recommended Questions Presence of stiff cellulosic plates., Obligate saprophyte.... 1 Edit Delete
12018 Dinoflagellates- do not possess which feature? 5 502 Recommended Questions Marine and photosynthetic, Variety in colors... 3 Edit Delete
12017 Members of the chrysophytes 5 502 Recommended Questions Are macroscopic planktons, Are present in freshwater as well as in marine water... 2 Edit Delete
12016 Diatoms do not possess this character- (1) Two thick overlapping shell (2) Soap box type arrangement of cell walls (3) Indestructible cell walls (4) Leave cell wall deposits 5 502 Recommended Questions Two thick overlapping shell, Soap box type arrangement of cell walls... 1 Edit Delete
12015 Diatomaceous earth is a result of accumulation of cell wall deposits of diatoms over 5 502 Recommended Questions Billions of years, Millions of years... 1 Edit Delete
12014 Assertion (A): Diatomaceous earth is used in polishing, filtration of oil and syrups. Reason (R): Diatomaceous earth is gritty due to presence of silica. 5 502 Recommended Questions Both (A) and (R) are True, and (R) correctly explains (A), Both (A) and (R) are True, but (R) does not correctly explain (A)... 1 Edit Delete
12013 The cell wall is impregnated with silica to form transparent siliceous shell in 5 502 Recommended Questions Dinoflagellates, Euglenoids... 3 Edit Delete
12012 Group of organisms in which cell wall forms two thin overlapping shells are 5 502 Recommended Questions Responsible for bioluminescence., Chief producers of ocean.... 2 Edit Delete
12011 Which of the following was not a feature of kingdom Monera but that of protista? 5 502 Recommended Questions True genetic recombination, Cell wall... 1 Edit Delete
12010 The organism with nuclear membrane, cellular level of body plan and autotrophic mode of nutrition can be- 5 502 Recommended Questions Protista, Fungi... 1 Edit Delete
12009 If an organism is made up of eukaryotic cell with cellular level of body organization, where should it be kept? 5 502 Recommended Questions Animals, Plantae... 4 Edit Delete
12008 Which is incorrect regarding protista? 5 502 Recommended Questions The boundaries of this kingdom is not clear, Forms a link with other organisms... 4 Edit Delete
12007 The kingdom protista does not include 5 502 Recommended Questions photosynthetic organisms, flagellate organisms... 4 Edit Delete
12006 Cyanobacteria do not possess which feature? 5 502 Recommended Questions Unicellular, Colonial or filamentous... 4 Edit Delete
12005 Heterocyst in blue-green algae 5 502 Recommended Questions Lacks photosystem-I, Are specialised cells for photosynthesis... 4 Edit Delete
12004 The specialised cells to fix atmospheric nitrogen is called as 5 502 Recommended Questions Heterocyst, Heterocyte... 1 Edit Delete
12003 ------- mycoplasma are pathogenic in ........ 5 502 Recommended Questions Many, animals and plants, All, animals and plants... 1 Edit Delete
12002 The characteristic feature of eubacteria is - 5 502 Recommended Questions Rigid cell wall, Flagellum in motile ones... 4 Edit Delete
12001 Archaebacteria differ from other bacteria on the basis of 1. Cell membrane structure. 2. Cell wall structure. 3. Presence of vacuole. 4. Flagella structure. 5 502 Recommended Questions Cell membrane structure., Cell wall structure.... 2 Edit Delete
12000 Which of the following are found in extreme saline conditions? 5 502 Recommended Questions Archaebacteria, Eubacteria... 1 Edit Delete
11999 Hot spring hosts which kind of archaebacteria? 5 502 Recommended Questions Thermoacidophiles, Thermoalkalophiles... 1 Edit Delete
11998 Bacterial structure and behaviour are respectively: 5 502 Recommended Questions Simple, Simple, Complex, Simple... 3 Edit Delete
11997 Which of the following is not archaebacteria? 5 502 Recommended Questions Halophile, Thermoalkalophiles... 2 Edit Delete
11996 Bacillus, Coccus, Vibrio, and Spirillum are four basic shapes of: 5 502 Recommended Questions Bacteria, PPLO... 1 Edit Delete
11995 Chemosynthetic autotrophic bacteria does not help in recycling of 5 502 Recommended Questions Nitrogen, Iron... 4 Edit Delete
11994 Which of the following is incorrect about bacteria? 5 502 Recommended Questions Simple structure, Not so extensive metabolic activity... 2 Edit Delete
11993 The organism in which cell wall is found and made up of polysaccharides and amino acid will be grouped under 5 502 Recommended Questions Monera, Protista... 1 Edit Delete
11992 Which is not correct with respect to bacteria? 5 502 Recommended Questions Sole members of kingdom monera, Most abundant organisms... 3 Edit Delete
11991 The biological classification was attempted instinctively 5 502 Recommended Questions to make scientific studies easy, to use organisms for our own use... 2 Edit Delete
11990 If only the mode of nutrition were to be considered then how many Kingdoms has to be together under saprophytic mode of nutrition 5 502 Recommended Questions Except plantae and Animalia all three, Except monera and plantae all three... 3 Edit Delete
11989 Domain Eukarya includes how many kingdoms (with respect to six kingdom system)? 5 502 Recommended Questions Two, Three... 4 Edit Delete
11988 Identify the group that is not matched correctly to all the characters shown: Group | Cell Type | Cell Wall | Nuclear Membrane | Body Organization 1. Monera | Prokaryotic | Absent | Absent | Cellular 2. Protista | Eukaryotic | Present in some | Present | Cellular 3. Fungi | Eukaryotic | Present | Present | Multicellular/loose tissue 4. Plantae | Eukaryotic | Present | Present | Tissue/organ 5 502 Recommended Questions 1 (69%), 2 (14%)... 1 Edit Delete
11987 The first attempt for Biological classification was because of the need to use organisms for our own use. Here which kind of uses are considered? 5 502 Recommended Questions Food and shelter, Food and Hunting... 3 Edit Delete
11986 Animals differ from plants in 5 502 Recommended Questions Being multicellular, Having cell wall... 3 Edit Delete
11985 Which of the following is not true for three domain system? 1. Divides kingdom monera into two domains. 2. Third domain includes all eukaryotic organisms. 3. It resulted in six kingdom classifications. 4. It is not phylogenetic. 5 502 Recommended Questions Divides kingdom monera into two domains., Third domain includes all eukaryotic organisms.... 4 Edit Delete
11984 Which of the following was not the limitation of two Kingdom classification? 5 502 Recommended Questions Could not distinguish between eukaryotes and prokaryotes, Couldn't distinguish between unicellular and multicellular... 4 Edit Delete
11983 The presence of RBC to classify animals was used as a unique criterion by 5 502 Recommended Questions Aristotle, Theopharastus... 1 Edit Delete
11982 First time the scientific basis for classification was attempted by - 5 502 Recommended Questions Theopharastus, Aristotle... 2 Edit Delete
11981 The common characteristic shown by mushroom, smut and rust 5 502 Recommended Questions is characterised by presence of basidiocarps, is characterised by presence of ascocarps... 1 Edit Delete
11980 Identify the exogenous spore? 5 502 Recommended Questions Zoospore, Basidiospore... 2 Edit Delete
11979 128 5 502 Recommended Questions 1, 2... 1 Edit Delete
11978 Dikaryon phase appears during sexual reproduction of 5 502 Recommended Questions Mushroom, Alternaria... 1 Edit Delete
11977 Rusts and smuts belong to — 5 502 Recommended Questions Phycomycetes, Ascomycetes... 3 Edit Delete
11976 Which of the following does not belong to the class Deuteromycetes? 5 502 Recommended Questions Alternaria, Colletotrichum... 3 Edit Delete
11975 Smut is caused by- 5 502 Recommended Questions Aspergillus, Claviceps... 3 Edit Delete
11974 What causes rust of wheat? 5 502 Recommended Questions Puccinia, Penicillium... 1 Edit Delete
11973 122 5 502 Recommended Questions 1, 2... 1 Edit Delete
11972 Identify the following pictures (b) and (c). 5 502 Recommended Questions b- Aspergillus; c- Mucor, b- Aspergillus; c- Agaricus... 2 Edit Delete
11971 Which type of asexual spores are found in class Ascomycetes? 5 502 Recommended Questions Conidia, Zoospore... 1 Edit Delete
11970 119 5 502 Recommended Questions 1, 2... 1 Edit Delete
11969 Identify the group of fungi that is not correctly matched with all the characters given below: 1. Phycomycetes: Mycelium — aseptate and coenocytic / Asexual reproduction by motile zoospores or by nonmotile aplanospores / spores — endogenously produced in the sporangium 2. Ascomycetes: Mycelium — unbranched and septate / Asexual spores are conidia / Conidia produced endogenously on conidiophores. 3. Basidiomycetes: Mycelium — branched and septate / Asexual spores are generally not found. 4. Deuteromycetes: Only the asexual or vegetative phase of these fungi are known. 5 502 Recommended Questions Phycomycetes, Ascomycetes... 2 Edit Delete
11968 Select the incorrect statement with respect to fungi 5 502 Recommended Questions Mycelium is consist of long slender thread like structures called hyphae, Aseptate and multinucleate hyphae is called coenocytic hyphae... 3 Edit Delete
11967 Which one single organism or the pair of organisms is correctly assigned to its or their named taxonomic group? 5 502 Recommended Questions Paramecium and _Plasmodium_ belong to the same kingdom as that of _Penicillium_, Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan... 3 Edit Delete
11966 Yeast belongs to the class — 5 502 Recommended Questions Phycomycetes, Ascomycetes... 2 Edit Delete
11965 Choose the wrong statement. 5 502 Recommended Questions 1. Penicillium is multicellular and produces antibiotics., 2. Neurospora is used in the study of biochemical genetics.... 3 Edit Delete
11964 Which of the following is known as Sac-fungi? 5 502 Recommended Questions Phycomycetes, Ascomycetes... 2 Edit Delete
11963 Which of the following is not a member of class phycomycetes? 5 502 Recommended Questions Mucor, Rhizopus... 4 Edit Delete
11962 Which of the following is used extensively in biochemical and genetic work? 5 502 Recommended Questions Aspergillus, Neurospora... 2 Edit Delete
11961 Fungus known by the name of 'Bread mould' is — 5 502 Recommended Questions Mucor, Albugo... 4 Edit Delete
11960 Which one of the following matches is correct? 5 502 Recommended Questions (a) Phytophthora Aseptate Mycelium Basidiomycetes, (b) Alternaria Sexual reproduction Absent Deuteromycetes... 2 Edit Delete
11959 Which class of fungi shows zygospore formation? 5 502 Recommended Questions Phycomycetes, Ascomycetes... 1 Edit Delete
11958 Which of the following is a non-motile spore in phycomycetes? 5 502 Recommended Questions Zoospore, Oospore... 3 Edit Delete
11957 Which class of Fungi has coenocytic and aseptate mycelium? 5 502 Recommended Questions Phycomycetes, Ascomycetes... 1 Edit Delete
11956 Which type of spores are found in the members of deuteromycetes? 5 502 Recommended Questions Zoospore, Aplanospore... 3 Edit Delete
11955 On the discovery of sexual phase in a fungus the mycologist moved it from class 'A' to ascomycetes. Identify the class 'A'? 5 502 Recommended Questions Phycomycetes, Basidiomycetes... 4 Edit Delete
11954 Fungi imperfecti constitute a group that 5 502 Recommended Questions are obligatory parasites, reproduce only asexually... 2 Edit Delete
11953 102 5 502 Recommended Questions 1, 2... 1 Edit Delete
11952 The imperfect fungi which are decomposers of litter and help in mineral cycling belong to 5 502 Recommended Questions Deuteromycetes, Basidiomycetes... 1 Edit Delete
11951 Find the odd one with respect to the fungi imperfecti 5 502 Recommended Questions Alternaria, Colletotrichum... 4 Edit Delete
11950 Which of the following is the sexual spore? 5 502 Recommended Questions Conidia, Sporangiospore... 4 Edit Delete
11949 Which of the following is not involved in the sexual cycle of fungi? 5 502 Recommended Questions Plasmogamy, Meiosis... 3 Edit Delete
11948 How many of the following statements regarding fungi are true? I. Asexual reproduction is common by the formation of spores. II. Their bodies consist of hyphae that may be interconnected to form mycelium. III. They secrete digestive enzymes onto organic matter and then absorb the products of the digestion. IV. Fungi can break down almost any carbon containing product. V. Fungi do not enter symbiotic relationships. 5 502 Recommended Questions 2, 3... 2 Edit Delete
11947 Consider the following characters: I. Heterotroph organisms II. A dikaryon stage III. Cell wall made of chitin IV. Undergo nuclear mitosis Which of the above relate to fungi? 5 502 Recommended Questions I, II and III, I, III and IV... 4 Edit Delete
11946 Dikaryophase of fungus is- 5 502 Recommended Questions Two nuclei per cell, Diploid nucleus... 1 Edit Delete
11945 Which of the following statements is incorrect? 5 502 Recommended Questions Yeasts have filamentous bodies with long thread-like hyphae., Morels and truffles are edible delicacies.... 1 Edit Delete
11944 According to the five-kingdom classification system, which of the following kingdom has multicellular/loose tissue level body organization? 5 502 Recommended Questions Protista, Plantae... 4 Edit Delete
11943 In fungi, asexual reproduction takes place by 5 502 Recommended Questions Fission, conidia and ascospores, Conidia, hypnospores and zoospores... 3 Edit Delete
11942 Which of the following kingdoms primarily use the Saprotrophic mode of nutrition? 5 502 Recommended Questions Protista, Monera... 3 Edit Delete
11941 Fungi has symbiotic association with- 5 502 Recommended Questions Algae, Roots of higher plants... 4 Edit Delete
11940 Which of the following is the asexual spore? 5 502 Recommended Questions Basidiospores, Zoospores... 2 Edit Delete
11939 Fungal bodies consist of long, slender thread-like structures called as- 5 502 Recommended Questions Mycelium, Hyphae... 2 Edit Delete
11938 Which one of the following is wrong for fungi? 5 502 Recommended Questions They are eukaryotic, All fungi possess a purely cellulosic cell wall... 2 Edit Delete
11937 Plant decomposers are 5 502 Recommended Questions Monera and Fungi, Fungi and Plantae... 1 Edit Delete
11936 Characteristic features of yeast are – 5 502 Recommended Questions Unicellular, Reproduce by budding... 4 Edit Delete
11935 84 5 502 Recommended Questions 1, 2... 1 Edit Delete
11934 One of the major components of cell wall of most fungi is 5 502 Recommended Questions peptidoglycan, cellulose... 4 Edit Delete
11933 Fusion of protoplasms between two motile or non-motile gametes is called as- 5 502 Recommended Questions Karyogamy, Plasmogamy... 2 Edit Delete
11932 The various spores produced in distinct structures are called as- 5 502 Recommended Questions Sorii, Fruiting bodies... 2 Edit Delete
11931 Select incorrect statement with respect to the following group of organisms and their characteristics 5 502 Recommended Questions Chrysophyte - Includes diatoms and desmids, Planktonic organism., Dinoflagellate - Mostly marine and photosynthetic, cell wall has stiff cellulosic plate on outer surface.... 4 Edit Delete
11930 The thalloid body of a slime mould (Myxomycetes) is known as: 5 502 Recommended Questions protonema, Plasmodium... 2 Edit Delete
11929 Choose the odd one out with respect to slime moulds 5 502 Recommended Questions Spores possess true cellulosic walls, The body moves along decaying twigs and leaves engulfing organic material... 4 Edit Delete
11928 Slime moulds aren't/haven't 5 502 Recommended Questions Extremely resistant, Having spores which are dispersed by air currents... 4 Edit Delete
11927 76 5 502 Recommended Questions 1, 2... 1 Edit Delete
11926 Saprophytic protists are: 5 502 Recommended Questions Slime moulds, Dinoflagellates... 1 Edit Delete
11925 Euglenoids are not 5 502 Recommended Questions Mostly marine, Have pellicle... 1 Edit Delete
11924 Euglenoids do not possess this feature- 5 502 Recommended Questions Always photosynthetic, Pigments like higher plants... 1 Edit Delete
11923 Which of the following is not associated with red tides 5 502 Recommended Questions Harmful for marine organisms, Gonyaulax... 3 Edit Delete
11922 $\text{Dinoflagellates can not appear}$ 5 502 Recommended Questions $\text{Black}$, $\text{White}$... $\text{More than one option is correct}$ Edit Delete
11921 $\text{'Red tide' is caused by}$ 5 502 Recommended Questions $\textit{Gonyaulax}$, $\textit{Ceratium}$... $\textit{Gonyaulax}$ Edit Delete
11920 $\text{Red tides in the sea are because of}$ 5 502 Recommended Questions $\text{Red dinoflagellates}$, $\text{Geladium}$... $\text{Red dinoflagellates}$ Edit Delete
11919 Red tides are due to the rapid multiplication of 5 502 Recommended Questions Cyanobacteria, Chlamydomonas... 3 Edit Delete
11918 Identify the organism that shows the following characteristics. (a) Zygotic meiosis (b) Causes red tide of the sea (c) Mesokaryon organisation (d) Whirling whips 5 502 Recommended Questions Noctiluca, Gonyaulax... 2 Edit Delete
11917 Which of the following feature does not hold true for chrysophytes? 5 502 Recommended Questions Golden algae, Fresh water and aquatic both habitat... 3 Edit Delete
11916 Which of the following feature is not associated with diatoms? 5 502 Recommended Questions Chief producers of Earth, Form diatomaceous earth which has gritty soil... 1 Edit Delete
11915 In which group of organisms the cell walls form two thin overlapping shells which fit together? 5 502 Recommended Questions Chrysophytes, Euglenoids... 1 Edit Delete
11914 Which of the following features does not go with characteristics of chrysophytes 5 502 Recommended Questions Diatoms + Desmids, Rarely photosynthetic... 2 Edit Delete
11913 Select the wrong statement. 5 502 Recommended Questions The walls of diatoms are easily destructible, 'Diatomaceous earth' is formed by the cell walls of diatoms... 1 Edit Delete
11912 $\text{Which of the following organisms are known as chief producers in the oceans?}$ 5 502 Recommended Questions $\text{Dinoflagellates}$, $\text{Diatoms}$... $\text{Diatoms}$ Edit Delete
11911 Diatoms have left behind large amounts of cell wall deposits in their habitat because: 5 502 Recommended Questions They are most abundant in that habitat, Their life span is long... 3 Edit Delete
11910 Diatoms do not decay easily because 5 502 Recommended Questions they have siliceous walls, their body is impervious to water... 1 Edit Delete
11909 In case of protists sexual reproduction can be by 5 502 Recommended Questions Cell fusion, Zygote formation... 4 Edit Delete
11908 Protista differs from monera in having 5 502 Recommended Questions cell wall, autotrophic nutrition... 4 Edit Delete
11907 Select the correct statement: 5 502 Recommended Questions Cholera, typhoid, tetanus are well-known diseases caused by viruses., Dinoflagellates, euglenoids and slime moulds are placed under kingdom Monera... 3 Edit Delete
11906 Single-celled eukaryotes are included in 5 502 Recommended Questions Protista, Fungi... 1 Edit Delete
11905 Chrysophytes, euglenoids, dinoflagellates and slime moulds are included in the kingdom 5 502 Recommended Questions Protista, Fungi... 1 Edit Delete
11904 Protists obtain their food as 5 502 Recommended Questions photosynthesizers only, chemosynthesizers... 4 Edit Delete
11903 Find the incorrect match. 5 502 Recommended Questions Heterocyst-Archaebacteria, Gelatinous sheath- BGA... 1 Edit Delete
11902 Which of the following does not belong to the kingdom Protista? 5 502 Recommended Questions Euglena, Dinoflagellates... 4 Edit Delete
11901 Identify the labelled part in the given figure and select the correct option. 5 502 Recommended Questions A: Heterocyst, B: Mucilaginous sheath, A: Mucilaginous sheath, B: Heterocyst... 1 Edit Delete
11900 The cyanobacteria are also referred to as 5 502 Recommended Questions protists, golden algae... 4 Edit Delete
11899 $\text{Cells in some filamentous cyanobacteria that are specialized for nitrogen fixation are called:}$ 5 502 Recommended Questions $\text{Phycobilisomes}$, $\text{Chromatophores}$... $\text{Heterocysts}$ Edit Delete
11898 $\text{The outermost limiting layer of mycoplasma is made up of}$ 5 502 Recommended Questions $\text{cell wall}$, $\text{cell membrane}$... $\text{cell membrane}$ Edit Delete
11897 $\text{Cell wall is absent in}$ 5 502 Recommended Questions $\textit{Aspergillus}$, $\textit{Funaria}$... $\textit{Mycoplasma}$ Edit Delete
11896 $\text{Which one of the following statements is wrong?}$ 5 502 Recommended Questions $\text{Golden algae are also called desmids}$, $\text{Eubacteria are also called false bacteria}$... $\text{Eubacteria are also called false bacteria}$ Edit Delete
11895 Which, among the following, are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen? 5 502 Recommended Questions Pseudomonas, Mycoplasma... 2 Edit Delete
11894 Choose the correct option for the given below figures. 5 502 Recommended Questions Peritrichous bacteria, They do not contain both RNA and DNA... 3 Edit Delete
11893 Chemosynthetic autotrophic bacteria 5 502 Recommended Questions Play a great role in recycling nutrients, Oxidises various organic substance... 1 Edit Delete
11892 Which of the following is incorrect about Cyanobacteria? 5 502 Recommended Questions They are photoautotrophs, They lack heterocysts... 2 Edit Delete
11891 Which of the following are likely to be present in deep sea water? 5 502 Recommended Questions Archaebacteria, Eubacteria... 1 Edit Delete
11890 Members of Kingdom Protista 1. are primarily aquatic 2. do not have membrane bound organelles 3. are all ciliated or flagellated 4. reproduce exclusively by asexual means 5 502 Recommended Questions are primarily aquatic, do not have membrane bound organelles... 1 Edit Delete
11889 Methanogens belong to 5 502 Recommended Questions eubacteria, archaebacteria... 2 Edit Delete
11888 Organisms called Methanogens are most abundant in a 5 502 Recommended Questions cattle yard, polluted stream... 1 Edit Delete
11887 Match the organisms in Column I with habitats in Column II. | Column I | Column II | |----------|----------| | (a) Halophiles | (i) Hot springs | | (b) Thermoacidophiles | (ii) Aquatic environment | | (c) Methanogens | (iii) Guts of ruminants | | (d) Cyanobacteria | (iv) Salty areas | Select the correct answer from the options given below: 5 502 Recommended Questions (a) (iv) (b) (i) (c) (iii) (d) (ii), (a) (i) (b) (ii) (c) (iii) (d) (iv)... 1 Edit Delete
11886 The guts of a cow and a buffalo possess: 5 502 Recommended Questions Fucus sp, Chlorella sp... 3 Edit Delete
11885 The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the 5 502 Recommended Questions thermoacidophiles, methanogens... 2 Edit Delete
11884 The most abundant prokaryotes helpful to human in making curd from milk and in production of antibiotics are the ones categorized as 5 502 Recommended Questions cyanobacteria, archaebacteria... 4 Edit Delete
11883 Chemosynthetic autotrophs derive energy by 5 502 Recommended Questions By sunlight, By oxidation of inorganic substances... 2 Edit Delete
11882 Leguminous plants have bacteria with which kind of mode of nutrition- 5 502 Recommended Questions Heterotrophs, Autotrophs... 1 Edit Delete
11881 Chemosynthetic bacteria does not use which inorganic substrate? 5 502 Recommended Questions Nitrites, Nitrates... 3 Edit Delete
11880 Lactobacillus comes under which category 5 502 Recommended Questions Autotrophs, Lithotrophs... 4 Edit Delete
11879 The majority of heterotrophic bacteria are 5 502 Recommended Questions Decomposers, Autotrophs... 1 Edit Delete
11878 Which of the following is not a mode of bacterial reproduction? 5 502 Recommended Questions Fission, Spore formation... 4 Edit Delete
11877 Identify the incorrect statement regarding true bacteria? 5 502 Recommended Questions As a group, they exhibit maximum metabolic diversity, Chemosynthetic autotrophic bacteria play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur.... 4 Edit Delete
11876 The motile bacteria are able to move by: 5 502 Recommended Questions fimbriae, flagella... 2 Edit Delete
11875 $\text{If any organism has non cellulosic cell wall where can it be placed according to whittaker's system of classification?}$ 5 502 Recommended Questions $\text{Monera}$, $\text{Protista}$... $\text{Both (1) and (3)}$ Edit Delete
11874 $\text{Identify the blanks in the following figures -}$ $\text{The figure shows two diagrams: one of a dividing bacteria and another of Nostoc. Both diagrams have labeled parts A, B, C, D, and E that need to be identified.}$ 5 502 Recommended Questions $\text{A - Cell wall, B - Cell membrane, C - Heterocyst, D - DNA, E - mucilaginous sheath.}$, $\text{A - Cell wall, B - Cell membrane, C - DNA, D - Heterocyst, E - Mucilaginous sheath.}$... $\text{A - Cell wall, B - Cell membrane, C - DNA, D - Heterocyst, E - Mucilaginous sheath.}$ Edit Delete
11873 $\text{Maximum nutritional diversity is found in the group}$ 5 502 Recommended Questions $\text{Fungi}$, $\text{Animalia}$... $\text{Monera}$ Edit Delete
11872 $\text{Which one of the following organisms is not an example of eukaryotic cells?}$ 5 502 Recommended Questions $\text{Escherichia coli}$, $\text{Euglena viridis}$... $\text{Escherichia coli}$ Edit Delete
11871 Identify the incorrect statement regarding bacteria: 5 502 Recommended Questions Bacteria are the most abundant microorganisms., Bacteria live in extreme habitats where very few other life forms can survive.... 4 Edit Delete
11870 Pick up the wrong statement. 5 502 Recommended Questions Cell wall is absent in Animalia., Protista have photosynthetic and heterotrophic modes of nutrition.... 4 Edit Delete
11869 Comma shaped bacteria are 5 502 Recommended Questions coccus, Vibrio... 2 Edit Delete
11868 Five kingdom system of classification suggested by R.H. Whittaker is not based on: 5 502 Recommended Questions Presence or absence of a well defined nucleus, Mode of reproduction... 2 Edit Delete
11867 Which of the following statement is not correct regarding biological classification? 5 502 Recommended Questions Gross morphology was not considered in two Kingdom classification, Classification system has undergone many changes over the time... 1 Edit Delete
11866 The organism in which organ system level of body organization is found are 5 502 Recommended Questions Plantae and Animalia, Plantae... 3 Edit Delete
11865 Which of the following statement is not incorrect with respect to biological classification attempted by Aristotle? 5 502 Recommended Questions Based on complex morphological characters, Plants were classified into trees, shrubs and herbs... 2 Edit Delete
11864 $\text{According to R.H. Whittaker } \textit{Chlamydomonas} \text{ and } \textit{Chlorella} \text{ will be kept under}$ 5 502 Recommended Questions $\text{Monera}$, $\text{Protista}$... $\text{Protista}$ Edit Delete
11863 Which of the following statement is wrong with respect to two Kingdom classification? 5 502 Recommended Questions Developed at the time of Linnaeus, Used till very recently... 3 Edit Delete
11862 $\text{In five-kingdom classification, unicellular green algae are included in the kingdom}$ 5 502 Recommended Questions $\text{Metaphyta}$, $\text{Protista}$... $\text{Protista}$ Edit Delete
11861 What kind of similarities are not targeted for evolving better classification system? 5 502 Recommended Questions Morphological, Physiological... 4 Edit Delete
11860 Which out of the following was not the basis of the five kingdom classification? 5 502 Recommended Questions Cell structure, Thallus organization... 4 Edit Delete
11859 Kingdom Animalia is characterised by 5 502 Recommended Questions direct dependence on autotrophs, indirect dependence on autotrophs... 4 Edit Delete
11858 The five kingdom classification system was given by 5 502 Recommended Questions 1968, 1969... 2 Edit Delete
11857 In two Kingdom classification plantae had all bacteria, algae and fungi with them on the basis of 5 502 Recommended Questions Presence of cell walls, Presence of nuclear membrane... 1 Edit Delete
11856 Evolutionary history of an organism is known as: 5 502 Recommended Questions Phylogeny, Ancestry... 1 Edit Delete
11855 $\text{In five kingdom classification, which single kingdom contains blue-green algae, nitrogen-fixing bacteria and methanogenic archaebacteria}$ 5 502 Recommended Questions $\text{Monera}$, $\text{Protista}$... $\text{Monera}$ Edit Delete
11854 Heterotrophic, eukaryotic, multicellular organisms lacking a cell wall are included in the kingdom. 5 502 Recommended Questions Protista, Fungi... 4 Edit Delete
11853 Which is wrongly matched? 5 502 Recommended Questions Fungi - Heterotrophic group, Prokaryotes- Protista... 2 Edit Delete
11852 Consider the following regarding the reasons for the fact that now Cyanobacteria are kept in Monera and not in Plantae: I. They are prokaryotes. II. The cell wall of cyanobacteria has peptidoglycan. III. They can fix atmospheric nitrogen. The Correct explanations would be: 5 502 Recommended Questions I and II only, I and III only... 4 Edit Delete
11851 85 5 501 Recommended Questions 1, 2... 1 Edit Delete
11850 84 5 501 Recommended Questions 1, 2... 1 Edit Delete
11849 83 5 501 Recommended Questions 1, 2... 1 Edit Delete
11848 82 5 501 Recommended Questions 1, 2... 1 Edit Delete
11847 81 5 501 Recommended Questions 1, 2... 1 Edit Delete
11846 80 5 501 Recommended Questions 1, 2... 1 Edit Delete
11845 79 5 501 Recommended Questions 1, 2... 1 Edit Delete
11844 78 5 501 Recommended Questions 1, 2... 1 Edit Delete
11843 77 5 501 Recommended Questions 1, 2... 1 Edit Delete
11842 76 5 501 Recommended Questions 1, 2... 1 Edit Delete
11841 75 5 501 Recommended Questions 1, 2... 1 Edit Delete
11840 74 5 501 Recommended Questions 1, 2... 1 Edit Delete
11839 73 5 501 Recommended Questions 1, 2... 1 Edit Delete
11838 72 5 501 Recommended Questions 1, 2... 1 Edit Delete
11837 71 5 501 Recommended Questions 1, 2... 1 Edit Delete
11836 70 5 501 Recommended Questions 1, 2... 1 Edit Delete
11835 69 5 501 Recommended Questions 1, 2... 1 Edit Delete
11834 68 5 501 Recommended Questions 1, 2... 1 Edit Delete
11833 67 5 501 Recommended Questions 1, 2... 1 Edit Delete
11832 The term 'systematics' refers to 5 501 Recommended Questions identification and study of organ systems, identification and preservation of plants and animals... 3 Edit Delete
11831 First step of taxonomy is 5 501 Recommended Questions Classification, Nomenclature... 4 Edit Delete
11830 Animals, dogs and mammals represent 5 501 Recommended Questions Taxa at different levels, Taxonomic hierarchy... 1 Edit Delete
11829 Which of the following taxonomic category is less general in characters as compared to the taxonomic category 'Genus'? 5 501 Recommended Questions Species, Division... 1 Edit Delete
11828 Order and higher taxon are identified on the basis of- 5 501 Recommended Questions Similarities in characters, Dissimilarities in characters... 4 Edit Delete
11827 What is incorrect for taxonomic hierarchy? 5 501 Recommended Questions There are 7 obligate and more than 21 intermediate categories, Higher the category, fewer the number of organism... 2 Edit Delete
11826 Higher the category....... is the ......of determining the relationship to other taxa at the same level. 5 501 Recommended Questions Lesser, difficulty, Greater, difficulty... 2 Edit Delete
11825 Families are characterised a. On the basis of vegetative features b. On the basis of reproductive features c. Both a and b d. On the basis of morphological features. 5 501 Recommended Questions On the basis of vegetative features, On the basis of reproductive features... 3 Edit Delete
11824 The family of Mangifera indica is 5 501 Recommended Questions Anacardiaceae, Sapindales... 1 Edit Delete
11823 Select the correct sequence of taxonomic categories of Mango in ascending order 5 501 Recommended Questions Mangifera → Anacardiaceae → Dicotyledonae → Sapindales → Angiospermae., Mangifera → Anacardiaceae → Sapindales → Dicotyledonae → Angiospermae.... 2 Edit Delete
11822 Choose the correct from the followings: 1. Mangifera, is a name of species 2. Polymoniales, is a name of family 3. Dicotyledonae, is a name of division 4. Triticum, is a name of genus 5 501 Recommended Questions Mangifera, is a name of species, Polymoniales, is a name of family... 4 Edit Delete
11821 Felidae does not have 5 501 Recommended Questions Dogs, Cats... 1 Edit Delete
11820 Order........ and primate comes under class........ 5 501 Recommended Questions Carnivora, mammalia, Diptera, Reptilia... 1 Edit Delete
11819 Taxa with least number of common characteristics are 5 501 Recommended Questions Felis and Panthera, Potato, Brinjal and Makoi... 4 Edit Delete
11818 Polymoniales have families like Solanaceae and convolvulaceae mainly based on the -------------. 5 501 Recommended Questions Floral characters, Aestivation... 1 Edit Delete
11817 Genus represents aggregate of closely related species. Which of the following group of species does not belong to same genus? 5 501 Recommended Questions Potato, Brinjal, Brinjal, makoi... 4 Edit Delete
11816 Which statements is incorrect with respect to genus? 5 501 Recommended Questions Each genus may have one or more than one specific epithets, It comprises a group of related species... 4 Edit Delete
11815 Cats come under Felis. Which taxon are we talking about? 5 501 Recommended Questions Class, Order... 3 Edit Delete
11814 Kingdom- Phylum- Class- Order- Family- Genus- Species 5 501 Recommended Questions Categories of plants, Categories of animals... 2 Edit Delete
11813 Which of the following set is not correct? 5 501 Recommended Questions Potato and Brinjal, Lion, leopard and cat... 2 Edit Delete
11812 What does not hold true with Species? 5 501 Recommended Questions Group of individual organisms, Having Fundamental similarities... 4 Edit Delete
11811 Step of classification does not represent- 5 501 Recommended Questions Rank, Taxon... 3 Edit Delete
11810 As we go from species to kingdom- 5 501 Recommended Questions a. The number of similarities gets reduced than previous taxon., b. The number of similarities gets increased than previous taxon.... 1 Edit Delete
11809 All living organisms are linked to one another because 5 501 Recommended Questions they have common genetic material of the same type, they share common genetic material but to varying degrees... 2 Edit Delete
11808 42 5 501 Recommended Questions 1, 2... 1 Edit Delete
11807 The earliest classifications were based on the ____ of various organisms. 5 501 Recommended Questions Morphology, Anatomy... 3 Edit Delete
11806 40 5 501 Recommended Questions 1, 2... 1 Edit Delete
11805 Name of the author is not written in which of the following way? 5 501 Recommended Questions After the specific epithet, In abbreviated form... 4 Edit Delete
11804 Binomial Nomenclature is the system p. Given by Carolus Linnaeus q. Practiced by scientists of Botany only r. Provides a name with two components s. Inconvenient than earlier naming systems How many of the statements are correct? 5 501 Recommended Questions 2, 3... 1 Edit Delete
11803 The scientific term for biological classification categories is the: 5 501 Recommended Questions Species, Taxon... 2 Edit Delete
11802 The processes which are not basic to taxonomy include? 5 501 Recommended Questions Characterization, Identification... 3 Edit Delete
11801 Select the incorrect match with respect to the given taxonomic categories of wheat. 5 501 Recommended Questions Genus - Triticum, Family - aestivum... 2 Edit Delete
11800 Which of the following is the correct scientific name of wheat derived by binomial nomenclature? 5 501 Recommended Questions Triticum Vulgare, Triticum aestivum... 2 Edit Delete
11799 Biosystematics aims at: 5 501 Recommended Questions The classification of organisms based on broad morphological characters, Delimiting various taxa of organisms and establishing their relationships... 3 Edit Delete
11798 Practical purpose of taxonomy or classification is to: 5 501 Recommended Questions facilitate the identification of unknown species, explain the origin of organisms... 1 Edit Delete
11797 Study of diversity of organisms and evolutionary relationship amongst them on the basis of all possible characters is called as 5 501 Recommended Questions Taxonomy, Systematics... 2 Edit Delete
11796 Which arrangement is in correct ascending order? 5 501 Recommended Questions Species < genus < order < family, Genus < species < family < order... 4 Edit Delete
11795 Which of the following 'suffixes' used for units of classification in plants indicates a taxonomic category of 'family'? 5 501 Recommended Questions - ales, - onae... 3 Edit Delete
11794 Which of the following taxonomic categories are correctly matched to their standard termination of names with respect to biological classification of plants? I Division: - phyta II Class: - opsida III Order: - ales IV Family: - idae 5 501 Recommended Questions I, II, IV, I, II, III... 2 Edit Delete
11793 Match each item in Column I with one item in Column II regarding taxonomic categories of humans and choose your answer from the codes given below: Column I | Column II I. Family | 1. Primata II. Order | 2. Hominidae III. Class | 3. Chordata IV. Phylum | 4. Mammalia Codes: | I | II | III | IV 1.| 1 | 2 | 3 | 4 2.| 2 | 1 | 4 | 3 3.| 2 | 1 | 3 | 4 4.| 1 | 2 | 4 | 3 5 501 Recommended Questions 1, 2, 3, 4, 2, 1, 4, 3... 2 Edit Delete
11792 Identify the correct match: a. Felis: Canidae b. Datura: Solanaceae c. Petunia: Leguminaceae d. Dogs: Felidae 5 501 Recommended Questions a. Felis: Canidae, b. Datura: Solanaceae... 2 Edit Delete
11791 Which of the following taxonomic categories contains organisms least similar to one another? 5 501 Recommended Questions Class, Genus... 1 Edit Delete
11790 Which of the following statements about classification is not true? I. Members of a family are less similar than members of an included genus. II. An order has more members than the number of members in an included genus. III. Families have more members than phyla. IV. The number of species in a taxon depends on their relative degree of similarity. 5 501 Recommended Questions Only III, Only IV... 1 Edit Delete
11789 Match column I with column II for housefly classification and select the correct option using the codes given below: Column I A. Family B. Order C. Class D. Phylum Column II 1. Diptera 2. Arthropoda 3. Muscidae 4. Insecta Codes: A B C D 5 501 Recommended Questions 3 1 4 2, 2 4 1 3... 1 Edit Delete
11788 Felidae and canidae are included in the order- 5 501 Recommended Questions Carnivora, Primata... 1 Edit Delete
11787 The highest category in the taxonomic hierarchy is 5 501 Recommended Questions Kingdom, Phylum... 1 Edit Delete
11786 Species are considered: 5 501 Recommended Questions Real basic units of classification, The lowest units of classification... 1 Edit Delete
11785 Genus has 5 501 Recommended Questions More common character possessing group of one species than other species, More common character possessing group of species than species of other genera... 2 Edit Delete
11784 Genera are 5 501 Recommended Questions An aggregate of different species, An aggregate of closely related species... 2 Edit Delete
11783 Which one of the following animals is correctly matched with its particular named taxonomic category? 5 501 Recommended Questions Cuttlefish – Mollusca, a class, Humans – Primate, the family... 4 Edit Delete
11782 The taxon which includes related species is 5 501 Recommended Questions class, order... 4 Edit Delete
11781 Taxonomic categories together makes- 5 501 Recommended Questions Criteria for Nomenclature, Taxonomic Hierarchy... 2 Edit Delete
11780 Which of the following is matched incorrectly: a. Mangifera: indica b. Panthera: tuberosum c. Solanum: melongena d. Solanum: nigrum 5 501 Recommended Questions Mangifera: indica, Panthera: tuberosum... 2 Edit Delete
11779 Taxonomic hierarchy refers to 5 501 Recommended Questions step-wise arrangement of all categories for classification of plants and animals, a group of senior taxonomists, who decide the nomenclature of plants and animals... 1 Edit Delete
11778 Both the words in a biological name when handwritten are underlined or printed in italics to indicate :- 5 501 Recommended Questions They are endangered, They are living... 3 Edit Delete
11777 What is the basic requirement to place organism in various categories? 5 501 Recommended Questions Knowledge of characters of an individual or group of organisms, Knowledge of all identified species... 1 Edit Delete
11776 Identify the incorrect statement: 5 501 Recommended Questions Biological names are generally in Latin and written in italics. They are Latinised or derived from Latin irrespective of their origin., The first word in a biological name represents the genus while the second component denotes the specific epithet.... 3 Edit Delete
11775 Which of the following is wrong with respect to taxonomy? a. Process of classification b. External and internal structure, structure of cell development process and ecological information is the basis of modern taxonomic studies. c. Characterisation, identification are the only basic processes to taxonomy. d. Taxonomy is not something new. 5 501 Recommended Questions Process of classification, External and internal structure, structure of cell development process and ecological information is the basis of modern taxonomic studies.... 3 Edit Delete
11774 What is incorrect with respect to taxa? 5 501 Recommended Questions Represents a category at different levels., Human and Homo sapiens represents different taxa.... 2 Edit Delete
11773 Classification is not associated with 5 501 Recommended Questions Grouping into convenient categories, Based on easily observable characters... 4 Edit Delete
11772 What is not true with respect to Systematics 5 501 Recommended Questions Systematic arrangement of organisms, Derived from latin word systema... 4 Edit Delete
11771 Systema Naturae is 5 501 Recommended Questions Publication of Linnaeus, Institute for classification studies... 1 Edit Delete
11770 Which of the following is against the rules of ICBN? 5 501 Recommended Questions Hand written scientific names should be underlined., Every species should have a generic name and a specific epithet.... 4 Edit Delete
11769 ICBN stands for: 5 501 Recommended Questions Indian Congress of Biological Names, International Code for Botanical Nomenclature... 2 Edit Delete
11768 The total number and types of organisms on earth represents the 5 501 Recommended Questions Taxonomy, Biodiversity... 2 Edit Delete
11767 The system of the naming of organisms was developed by 5 501 Recommended Questions Robert Hooke, Carolus Linnaeus... 2 Edit Delete
11596 Electron Transport System (ETS) is located in mitochondrial 5 506 Recommended Questions outer membrane, inter membrane space... 3 Edit Delete
11595 In ETS the number of ATP molecules synthesized depends on 5 506 Recommended Questions O₂, Substrate... 3 Edit Delete
11594 The order of electron transport is 5 506 Recommended Questions Complex I- Complex III- Complex IV- Complex V, Complex II- Complex III- Complex IV- Complex V... 1 Edit Delete
11593 Ubiquinone carries electron from 5 506 Recommended Questions Complex III to complex IV, Complex I to complex II... 4 Edit Delete
11592 The process by which ATP is produced in the inner membrane of a mitochondrion. The electron transport system transfers protons from the inner compartment of the outer; as the protons flow back to the inner compartment, the energy of their movement is used to add phosphate to ADP, forming ATP. 5 506 Recommended Questions Chemiosmosis, Phosphorylation... 1 Edit Delete
11591 What is the complex which oxidizes NADH during ETS 5 506 Recommended Questions Complex 1, NADH dehydrogenase... 4 Edit Delete
11590 Which of the following processes makes direct use of oxygen? 5 506 Recommended Questions Glycolysis, Fermentation... 4 Edit Delete
11589 Select the mobile electron carrier in inner mitochondrial membrane 5 506 Recommended Questions NADH dehydrogenase, Cytochrome C... 2 Edit Delete
11588 The mitochondrial electron transport chain is located in: 5 506 Recommended Questions Outer membrane, Inner membrane... 2 Edit Delete
11587 Which of the following complex has got one Domain present in matrix and other domain in the inner membrane? 5 506 Recommended Questions Complex I, Complex II... 4 Edit Delete
11586 The reduced ubiquinone is 5 506 Recommended Questions Ubiquinol, It is oxidized with the transfer of electrons to cytochrome C via cytochrome bc₁ complex... 4 Edit Delete
11585 121 5 506 Recommended Questions 1, 2... 1 Edit Delete
11584 Cytochrome c includes except 5 506 Recommended Questions Mobile carrier, Present on outer surface of inner membrane... 4 Edit Delete
11583 Cytochrome c-oxidase complex contains 5 506 Recommended Questions Cytochromes a and a₃ with two copper centres, Cytochromes a and a₃ with single copper centre... 1 Edit Delete
11582 Find the wrong statement about the Electron Transport system: 5 506 Recommended Questions Release and utilize the energy stored in NADH and FADH₂, Oxidizes NADH and reduces FADH₂... 2 Edit Delete
11581 Complex three is 5 506 Recommended Questions NADH dehydrogenase, Succinate dehydrogenase... 4 Edit Delete
11580 FADH₂ is oxidized by 5 506 Recommended Questions Complex I, Complex II... 2 Edit Delete
11579 In ETS, complex V is 5 506 Recommended Questions ATP synthase, NADH dehydrogenase... 1 Edit Delete
11578 Oxidation of two molecules of NADH gives 5 506 Recommended Questions 6 ATPs, 3 ATPs... 1 Edit Delete
11577 The electrons which are coming from oxidation of NADH are transferred from complex I to 5 506 Recommended Questions Ubiquinol, Ubiquinone... 2 Edit Delete
11576 During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP: 5 506 Recommended Questions Glycolysis, Krebs cycle... 3 Edit Delete
11575 Tripalmitin Which of the following is wrong? 1. A fatty acid 2. C₅₁H₉₈O₆ 3. C₄₈H₉₆O₅ 4. Both 1 and 3 5 506 Recommended Questions A fatty acid, C₅₁H₉₈O₆... 3 Edit Delete
11574 Which of the following is not correct? 5 506 Recommended Questions In living organisms, respiratory substrates are often more than one, Pure proteins and fats can also be used as respiratory substrate... 2 Edit Delete
11573 If RQ is 0.6 in a respiratory metabolism, it would mean that 5 506 Recommended Questions Carbohydrates are used as respiratory material, Organic acids are used as respiratory substrate... 3 Edit Delete
11572 Select the correct statement 5 506 Recommended Questions ATP formation occurs both in chloroplast and mitochondria, RQ of protein is 1.5... 1 Edit Delete
11571 When tripalmitin is used as substrate in respiration, the value of RQ is found to be less than one because 5 506 Recommended Questions It contains less number of carbon atoms than oxygen atoms., The amount of CO₂ evolved is more than the amount of O₂ consumed.... 3 Edit Delete
11570 When proteins are used as respiratory substrates, the respiratory quotient would be about: 5 506 Recommended Questions 1.2, 1.0... 3 Edit Delete
11569 For the substrate Glucose, how many Oxygen are used and how many Carbon-dioxide are evolved? 5 506 Recommended Questions 3,3, 6,3... 4 Edit Delete
11568 Respiratory Quotient 5 506 Recommended Questions Some Ratio, Some amount of oxygen... 1 Edit Delete
11567 When (i) are used in respiration the RQ is (ii). Select the correct option for (i) and (ii) that make the sentence a correct sense. 5 506 Recommended Questions (i) Carbohydrates, (ii) > 1, (i) Proteins, (ii) > 1... 3 Edit Delete
11566 RQ (Respiratory Quotient) is defined as 5 506 Recommended Questions Volume of CO₂ evolved = Volume of O₂ consumed, Volume of O₂ consumed... 3 Edit Delete
11565 RQ of tripalmitin is 5 506 Recommended Questions 6CO₂/6O₂, 102CO₂/145O₂... 2 Edit Delete
11564 The RQ of a substrate is found to be 0.9 what would be that substrate? 5 506 Recommended Questions Carbohydrate, Fatty Acid... 4 Edit Delete
11563 The value of respiratory Quotient actually depends upon 5 506 Recommended Questions The type of respiratory substrate used, The place in which respiration is occurring... 1 Edit Delete
11562 The ultimate electron acceptor of respiration in an aerobic organism is 5 506 Recommended Questions cytochrome, oxygen... 2 Edit Delete
11561 The end product of oxidative phosphorylation is 5 506 Recommended Questions NADH, oxygen... 4 Edit Delete
11560 Match the following columns. Column I A. Molecular oxygen B. Electron acceptor C. Pyruvate dehydrogenase D. Decarboxylation Column II 1. α-ketoglutaric acid 2. Hydrogen acceptor 3. Cytochrome-c 4. Acetyl Co - A Codes 5 506 Recommended Questions 2 3 4 1, 3 4 2 1... 1 Edit Delete
11559 Read the following statements: (a) F₀ part of ATPase is associated with breakdown of proton gradient (b) A H-carrier contributes in creation of proton gradient (c) Movement of electrons in ETS is coupled to pumping of protons into the lumen (d) Formation of NADPH + H⁺ is related with the creation of proton gradient How many of the above statements are correct? 5 506 Recommended Questions Two, One... 4 Edit Delete
11558 In the given diagrammatic representation of ATP synthesis in mitochondria, A, B and C are respectively: 5 506 Recommended Questions 2H⁺, F₀ and F₁, 2H⁺, F₁ and F₀... 1 Edit Delete
11557 Oxidative phosphorylation is 5 506 Recommended Questions formation of ATP by transfer of phosphate group from a substrate to ADP, oxidation of phosphate group in ATP... 4 Edit Delete
11556 The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that Adenosine Triphosphate (ATP) is formed because 5 506 Recommended Questions high energy bonds are formed in mitochondrial proteins, ADP is pumped out of the matrix into the intermembrane space... 3 Edit Delete
11555 For each ATP produced, how many H⁺ passes through F₀ from the intermembrane space to the matrix down the electrochemical proton gradient? 5 506 Recommended Questions 1, 2... 4 Edit Delete
11554 The individual amino acid enter the respiratory pathway at 5 506 Recommended Questions Within Krebs' cycle, As Pyruvate or Acetyl CoA... 4 Edit Delete
11553 89 5 506 Recommended Questions 1, 2... 1 Edit Delete
11552 The individual amino acid enter the respiratory pathway at 5 506 Recommended Questions Within Krebs' cycle, As Pyruvate or Acetyl CoA... 4 Edit Delete
11551 Which of the following biomolecules is common to respiration-mediated breakdown of fats, carbohydrates and proteins? 5 506 Recommended Questions Glucose-6-phosphate, Fructose 1, 6-bisphosphate... 4 Edit Delete
11550 86 5 506 Recommended Questions 1, 2... 1 Edit Delete
11549 Which of the following statements is incorrect? (1) Glucose is the favoured substrate for respiration (2) All carbohydrates are usually first converted into glucose before they are used for respiration (3) Other respiratory substrates are also respired but they do not enter the respiratory pathway at very first step (4) Fats directly enter the respiratory pathway 5 506 Recommended Questions Glucose is the favoured substrate for respiration, All carbohydrates are usually first converted into glucose before they are used for respiration... 4 Edit Delete
11548 For the synthesis of Fatty acids, which of the following substrates will be used? 5 506 Recommended Questions Acetyl CoA, PGAL... 1 Edit Delete
11547 83 5 506 Recommended Questions 1, 2... 1 Edit Delete
11546 In which one of the following do the two names refer to one and the same thing: 1. Kreb's cycle and Calvin cycle 2. Tricarboxylic acid cycle and citric acid cycle 3. Citric acid cycle and Calvin cycle 4. Tricarboxylic acid cycle and urea cycle 5 506 Recommended Questions Kreb's cycle and Calvin cycle, Tricarboxylic acid cycle and citric acid cycle... 2 Edit Delete
11545 Read the following statements and choose the option which is true for them. Statement-I: During conversion of succinic acid to fumaric acid in Krebs cycle, one molecule of FAD is synthesized. Statement-II: There are three steps in the Krebs cycle where CO₂ is released. 5 506 Recommended Questions Only statement I is correct., Only statement II is correct.... 4 Edit Delete
11544 In a coupled reaction, ....... is converted to ......with the simultaneous synthesis of ..........from ...... (The reaction of Krebs' Cycle of cellular respiration) 5 506 Recommended Questions GDP, GTP, ADP, ATP, GTP, GDP, ATP, ADP... 2 Edit Delete
11543 Which statement is not correct for Krebs' cycle 5 506 Recommended Questions Krebs' cycle occurs in mitochondrial matrix, Pyruvic acid condense with OAA to form citric acid... 2 Edit Delete
11542 The number of substrate level of phosphorylations in one turn of citric acid cycle is: 5 506 Recommended Questions One, Two... 1 Edit Delete
11541 The very first step of TCA cycle involves except 5 506 Recommended Questions Citrate synthase, A molecule of coenzyme A is released... 3 Edit Delete
11540 In which of the following conversion steps occurring in the mitochondrial matrix, substrate-level phosphorylation occurs? 5 506 Recommended Questions 1, 3-bisphosphoglyceric acid → 3-phosphoglyceric acid, Glucose-6-phosphate to fructose-6-phosphate... 4 Edit Delete
11539 75 5 506 Recommended Questions 1, 2... 1 Edit Delete
11538 Which statement is wrong for Krebs' cycle? 1. There are three points in the cycle where NAD⁺ is reduced to NADH + H⁺ 2. There is one point in the cycle where FAD⁺ is reduced to FADH₂ 3. During conversion of succinyl Co-A to succinic acid, a molecule of GTP is synthesised 4. The cycle starts with condensation of acetyl group (acetyl Co-A) with pyruvic acid to yield citric acid 5 506 Recommended Questions There are three points in the cycle where NAD⁺ is reduced to NADH + H⁺, There is one point in the cycle where FAD⁺ is reduced to FADH₂... 4 Edit Delete
11537 From citrate to alpha-ketoglutarate in TCA cycle all the following reactions happen except 5 506 Recommended Questions Isomerization, Decarboxylation... 4 Edit Delete
11536 Which of the following is the connecting link between glycolysis and Krebs cycle? 5 506 Recommended Questions Acetyl Co-A, Oxalosuccinic acid... 1 Edit Delete
11535 71 5 506 Recommended Questions 1, 2... 1 Edit Delete
11534 At how many points, does the FADH₂ is produced during complete breakdown of Glucose? 5 506 Recommended Questions One, Three... 1 Edit Delete
11533 From alpha-ketoglutarate to succinyl CoA in TCA cycle which of the following occurs 5 506 Recommended Questions 4C compound is formed, 5C compound is Formed... 1 Edit Delete
11532 68 5 506 Recommended Questions 1, 2... 1 Edit Delete
11531 At how many points during Krebs' cycle NADH is produced? 5 506 Recommended Questions three, Four... 1 Edit Delete
11530 Complete the given reaction of the cycle present in the mitochondrial matrix: A + Acetyl CoA + H₂O → Citric acid (enzyme B) 5 506 Recommended Questions A—Succinic acid; B—Pyruvate dehydrogenase., A—Malic acid; B—Transacetylase.... 3 Edit Delete
11529 In Krebs's cycle, a molecule of GTP is produced during the conversion of: 5 506 Recommended Questions Citrate into Ketoglutarate, Succinyl-CoA into succinate... 2 Edit Delete
11528 In cellular respiration, where is FADH₂ produced? 5 506 Recommended Questions Conversion of BPGA to PGA, Conversion of succinate to Malate... 2 Edit Delete
11527 The synthesis of GTP in Krebs' cycle is 5 506 Recommended Questions Oxidative Phosphorylation, Substrate Level Phosphorylation... 2 Edit Delete
11526 Which of the following is not used for the cyclic process of cellular respiration of carbohydrates? 5 506 Recommended Questions Krebs' cycle, Tricarboxylic Acid Cycle... 4 Edit Delete
11525 Pyruvic acid, the key product of glycolysis, can have many metabolic fates. Under aerobic condition, it forms 5 506 Recommended Questions lactic acid, CO₂ + H₂O... 2 Edit Delete
11524 Which of the following yield maximum energy? 5 506 Recommended Questions By glycolysis in a sprinter, Aerobic respiration in germinating seeds... 2 Edit Delete
11523 How many molecules of NADH are produced during oxidation of one molecule of Glucose to Acetyl CoA? 5 506 Recommended Questions 2 NADH, 4 NADH... 2 Edit Delete
11522 When two molecules of glucose are completely oxidized in aerobic respiration, how many ATPs are generated through FADH₂? 5 506 Recommended Questions 6, 15... 3 Edit Delete
11521 57 5 506 Recommended Questions 1, 2... 1 Edit Delete
11520 Presence of oxygen is vital in aerobic respiration because: 5 506 Recommended Questions It drives the whole process by removing hydrogen from ETS., Oxygen causes phosphorylation which is light stimulated.... 1 Edit Delete
11519 Mark the incorrect match: Aerobic vs Anaerobic - Complete breakdown of glucose vs Partial breakdown; Net gain 38 ATP vs Net gain 2 ATP; Vigorously vs NADH oxidised slowly; CO₂ released vs No CO₂ released. 5 506 Recommended Questions 1, 2... 4 Edit Delete
11518 Pyruvate is a result of ...... of carbohydrates. 5 506 Recommended Questions Glycolytic fermentation, Glycolytic aerobic respiration... 3 Edit Delete
11517 The co-factor required for the activity of pyruvate dehydrogenase is: 5 506 Recommended Questions Zinc, Magnesium... 2 Edit Delete
11516 If fatty acids were to be respired, they would first be degraded to: 5 506 Recommended Questions Glucose-6 phosphate, Pyruvate... 3 Edit Delete
11515 The reaction which is catalyzed by Pyruvate dehydrogenase includes except 5 506 Recommended Questions Several coenzymes, NAD⁺... 4 Edit Delete
11514 The oxidative decarboxylation of Pyruvate occurs in 5 506 Recommended Questions Mitochondrial membranes, Cytoplasm... 4 Edit Delete
11513 During Aerobic respiration, one molecule of Glucose gives 5 506 Recommended Questions A net gain of 38 ATPs, Production of 38 ATPs... 1 Edit Delete
11512 NADH synthesized in glycolysis of aerobic respiration is transferred into 5 506 Recommended Questions Cytoplasm for oxidative phosphorylation., Mitochondria for oxidative phosphorylation.... 2 Edit Delete
11511 The enzyme Pyruvate dehydrogenase acts in 5 506 Recommended Questions Mitochondrial membranes, Cytoplasm... 4 Edit Delete
11510 The process used in conversion of Pyruvate to Acetyl CoA is 5 506 Recommended Questions Oxidative dehydration, Oxidative decarboxylation... 2 Edit Delete
11509 The primary role of oxygen in cellular respiration is to: 5 506 Recommended Questions yield energy in the form of ATP as it is passed down the respiratory chain., act as an acceptor for electrons and hydrogen, forming water... 2 Edit Delete
11508 The overall goal of glycolysis, Krebs cycle and the electron transport system is the formation of: 5 506 Recommended Questions ATP in small stepwise units, ATP in one large oxidation reaction... 1 Edit Delete
11507 The substrate which enters in Krebs' cycle during oxidation of Glucose is 5 506 Recommended Questions Pyruvate, Acetyl CoA... 2 Edit Delete
11506 The first step of decarboxylation in cellular respiration is 5 506 Recommended Questions Conversion of PGAL to DHAP, Conversion of PGAL to PGA... 3 Edit Delete
11505 Cell respiration is carried out by 5 506 Recommended Questions ribosome, mitochondria... 2 Edit Delete
11504 Who elucidated Krebs' cycle for the very first time? 5 506 Recommended Questions Frederick Kreb, Hans Kreb... 2 Edit Delete
11503 What is the correct order of the stages of cellular respiration? 5 506 Recommended Questions Krebs' cycle electron- transport- chain glycolysis, Electron transport chain- Krebs' cycle - glycolysis... 3 Edit Delete
11502 Aerobic Respiration: 5 506 Recommended Questions More common in higher organisms, Leads to complete oxidation of Organic substance in the presence of oxygen and release of Carbon-dioxide... 4 Edit Delete
11501 The enzymes involved in Alcoholic Fermentation is not 5 506 Recommended Questions Pyruvate decarboxylase, Alcohol dehydrogenase... 3 Edit Delete
11500 The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called 5 506 Recommended Questions glycolysis, fermentation... 2 Edit Delete
11499 Fermentation can take place in 5 506 Recommended Questions Anaerobic conditions in many prokaryotes and unicellular Eukaryotes, Humans... 4 Edit Delete
11498 Which of the following is not the assumption considered to finalize the balance sheet of respiration? 5 506 Recommended Questions There is sequential, orderly pathway functioning with one substrate forming the next and with glycolysis following TCA and Then ETS pathway, The NADH synthesized in Glycolysis is transferred into the mitochondria and undergoes Oxidative Phosphorylation... 4 Edit Delete
11497 In the absence of oxygen, the primary purpose of fermentation is to: 5 506 Recommended Questions produce amino acids for protein synthesis, generate a proton gradient for ATP synthesis... 4 Edit Delete
11496 Which of the following acts as a reducing agent in Fermentation? 5 506 Recommended Questions NADH + H⁺, NAD⁺... 1 Edit Delete
11495 In Fermentation (1) The amount of energy trapped in the form of ATP is 7 per cent of the energy in Glucose (2) The amount of energy trapped in the form of ATP is more than 7 per cent of the energy in Glucose (3) The amount of energy released is less than 7 per cent of the energy stored in Glucose (4) The amount of energy released is more than 7 per cent of the energy stored in Glucose 5 506 Recommended Questions The amount of energy trapped in the form of ATP is 7 per cent of the energy in Glucose, The amount of energy trapped in the form of ATP is more than 7 per cent of the energy in Glucose... 3 Edit Delete
11494 Alcoholic Fermentation is observed in case of 5 506 Recommended Questions Muscles undergoing vigorous exercise, Anaerobic Bacteria... 3 Edit Delete
11493 If a yeast performs Fermentation such that the concentration of the Alcohol reaches to ........, then it poisons itself to ........ 5 506 Recommended Questions 7 per cent, the stage of no budding, 5 per cent, the stage of no budding... 3 Edit Delete
11492 Fermentation- Which of the following is true? 5 506 Recommended Questions Only partial breakdown of glucose, Net gain of only two molecules of ATP for each molecule of Glucose... 4 Edit Delete
11491 After glycolysis, fate of glucose in mitochondrial matrix is 5 506 Recommended Questions oxidation, reduction... 3 Edit Delete
11490 Glycolysis is: 5 506 Recommended Questions Oxidation of glucose to glutamate, Conversion of pyruvate to citrate... 3 Edit Delete
11489 Phosphorylation of glucose during glycolysis is catalysed by 5 506 Recommended Questions phosphoglucomutase, phosphoglucoisomerase... 3 Edit Delete
11488 What is the total amount of ATP produced in Glycolysis? 5 506 Recommended Questions 4, 2... 1 Edit Delete
11487 23 5 506 Recommended Questions 1, 2... 1 Edit Delete
11486 During the process of respiration redox equivalents are removed: 5 506 Recommended Questions In form of hydrogen atom., In form of an electron.... 1 Edit Delete
11485 At which step, glycolysis reaches the break-even point: 2 molecules of ATP consumed, and 2 new molecules synthesized? 5 506 Recommended Questions Splitting of fructose-6-phosphate into two trioses, Conversion of 1,3 bi-phosphoglycerate to 3 phosphoglycerate... 2 Edit Delete
11484 The metabolic fate of pyruvate depends on 5 506 Recommended Questions Cellular Need, Pace of enzyme activity... 1 Edit Delete
11483 In which of the following reactions of glycolysis, a molecule of water is removed from the substrate? 1. Glucose → Glucose-6-phosphate 2. Fructose-6-phosphate → Fructose-1,6 bisphosphate 3. 2-phosphoglycerate → Phosphoenol pyruvate 4. Phosphoenol pyruvate → Pyruvate 5 506 Recommended Questions Glucose → Glucose-6-phosphate, Fructose-6-phosphate → Fructose-1,6 bisphosphate... 3 Edit Delete
11482 The step of Glycolysis where NADH is produced actually results in P. Oxidation of PGAL Q. Reduction of NAD+ R. Production of BPGA S. Use of Inorganic phosphate T. Production of NADH+ H+ 5 506 Recommended Questions PQRST, QRS... 1 Edit Delete
11481 The energy yielding steps of glycolysis are 5 506 Recommended Questions Conversion of PGA to BPGA and Conversion of PGAL to DHAP, Conversion of PGAL to PGA and Conversion of BPGA to PGA... 3 Edit Delete
11480 Sucrose is converted into glucose and fructose by the enzyme: 5 506 Recommended Questions Maltase, Zymase... 4 Edit Delete
11479 Phosphorylation of glucose during glycolysis is catalysed by 5 506 Recommended Questions Phosphoglucomutase, Phosphoglucoisomerase... 3 Edit Delete
11478 Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by: 5 506 Recommended Questions Phosphofructokinase, Aldolase... 3 Edit Delete
11477 The major ways through which different cells handle Pyruvate of Glycolysis are except 5 506 Recommended Questions Lactic Acid Fermentation, Alcoholic Fermentation... 4 Edit Delete
11476 Choose the correct names of A, B, C and D 5 506 Recommended Questions 1,3 di PGA, 3 PGAld, Fr,1,6 di P, Fr. 6P, 3 PGAld, 1,3 Di PGA, Fr.1,6 di P, Fr. 6P... 4 Edit Delete
11475 In which compounds does sucrose is broken by Enzyme Invertase? 5 506 Recommended Questions Glucose and galactose, Galactose and Fructose... 4 Edit Delete
11474 Fate of pyruvate produced by glycolysis depends on cellular needs, it can enter 5 506 Recommended Questions Lactic acid fermentation, Alcoholic fermentation... 4 Edit Delete
11473 Glycolysis is found in cytoplasm of virtually all types of aerobic/anaerobic cells. In this process, glucose is converted into: 5 506 Recommended Questions PEP, acetyl CoA... 3 Edit Delete
11472 Plants can get along without respiratory organs because of the following except: 5 506 Recommended Questions Each plant part takes care of its own gas exchange needs, Plants do not present great demands for gas exchange.... 3 Edit Delete
11471 Carbon skeletons produced during respiration is 5 506 Recommended Questions Used as energy source, Used as precursors for biosynthesis of other molecules in the cell... 2 Edit Delete
11470 The plants do not breathe can be justified except 5 506 Recommended Questions Plants do not have sophisticated organs for gaseous exchange, Each plant part takes care of its own gas-exchange needs... 3 Edit Delete
11469 Which of the following statement is correct? 5 506 Recommended Questions Glycolysis is present in facultative anaerobes, not in obligate anaerobes, Usually carbohydrates are oxidised to release energy in cellular respiration... 2 Edit Delete
11468 The following statements are true except 5 506 Recommended Questions All the food that is respired for the life processes comes from photosynthesis, Carnivores depend indirectly on plants for their food... 4 Edit Delete
11467 The energy which is required for life processes is obtained by 5 506 Recommended Questions Hydrolysis of Macromolecules, Hydrolysis of food... 3 Edit Delete
11466 Respiration is 5 506 Recommended Questions Breaking of a type of bonds like ionic or non ionic of complex compounds through oxidation within the cell by utilizing bulk of energy, Breaking of C-C bonds of simple molecules through hydrolysis within the cell by releasing energy... 3 Edit Delete
11465 Respiratory substrates are the compounds (1) Which gets oxidized during Respiration (2) Which gets hydrolysed during Respiration (3) Which gets reduced during Respiration (4) Which catalyzes process of Respiration 5 506 Recommended Questions Which gets oxidized during Respiration, Which gets hydrolysed during Respiration... 1 Edit Delete
11464 Which C4 compound is transported in Bundle Sheath cell? 5 505 Recommended Questions Malate, Aspartate... 4 Edit Delete
11463 Column - I i. Jan Ingenhousz ii. Joseph Priestley iii. T.W Engelmann iv. Julius von Sachs Column - II a. discovery of O₂ b. Plants restore to the air whatever breathing animals and burning candles remove c. showed that only the green part of the plants could release oxygen d. discovery of production of glucose in plants e. first action spectrum of photosynthesis Using a prism he split light into its spectral components and then illuminated Cladophora, placed in a suspension of aerobic bacteria. Which of the following shows the correct match? 5 505 Recommended Questions i-c; ii-b; iii-a, e, f; iv-d, i-a, b; ii-c; iii-d; iv- e, f.... 4 Edit Delete
11462 In Hatch and Slack pathway, the primary CO₂ acceptor is - 5 505 Recommended Questions Oxaloacetic acid, Phosphoglyceric acid... 3 Edit Delete
11461 Hatch and Slack Pathway comes under which category? 5 505 Recommended Questions Cascade, Linear... 3 Edit Delete
11460 160 5 505 Recommended Questions 1, 2... 1 Edit Delete
11459 What is incorrect about bundle sheath cells- 5 505 Recommended Questions Multilayered, large number of chloroplasts... 3 Edit Delete
11458 Select the incorrect match from the following 5 505 Recommended Questions One Calvin cycle — Requires 3 ATP and 2 NADPH, C₄ plant — Shows slower process of carbon fixation... 2 Edit Delete
11457 The first carbon dioxide fixation product of C₄ plant is 5 505 Recommended Questions Oxaloacetic acid, ribulose biphosphate... 1 Edit Delete
11456 With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct? 5 505 Recommended Questions Light saturation for CO₂-fixation occurs at 10% of full sunlight., Increasing atmospheric CO₂ concentration upto 0.05% can enhance the CO₂-fixation rate... 3 Edit Delete
11455 The step of decarboxylation during C4 cycle occurs in: 5 505 Recommended Questions Only Mesophyll cells, Bundle Sheath cells... 2 Edit Delete
11454 Phosphoenol pyruvate (PEP) is the primary CO₂ acceptor in 5 505 Recommended Questions C₃-plants, C₄-plants... 2 Edit Delete
11453 In the diagrammatic representation of the Hatch and Slack pathway, A and B respectively represent: 5 505 Recommended Questions Mesophyll cells and Bundle sheath cells, Bundle sheath cells and Mesophyll cells... 1 Edit Delete
11452 Sunlight is essential for photosynthesis is established by 5 505 Recommended Questions Jan Ingenhousz, Robert Hill... 1 Edit Delete
11451 Where exactly is, the PEP case found? 5 505 Recommended Questions Only Mesophyll cells, Bundle Sheath cells... 1 Edit Delete
11450 The process which makes a major difference between C₃ and C₄ plants is: 5 505 Recommended Questions glycolysis, Calvin cycle... 3 Edit Delete
11449 ''Kranz anatomy'' is present in 5 505 Recommended Questions All photosynthetic plants, Only C₃ plants... 4 Edit Delete
11448 For the synthesis of one glucose molecule, the Calvin cycle operates for: 5 505 Recommended Questions 2 times, 4 times... 3 Edit Delete
11447 C₄ and CAM plants have many similarities, like 5 505 Recommended Questions Secondary CO₂ fixation by Rubisco, Scotoactive stomata... 1 Edit Delete
11446 Calvin cycle (C₃ cycle) 5 505 Recommended Questions Is a feature of all chloroplast containing cells in plants, Is the main sugar-producing cycle in C₃, C₄, and CAM plants... 2 Edit Delete
11445 What is the primary acceptor of CO₂ in dark reaction? 5 505 Recommended Questions Ketose sugar, Aldose sugar... 1 Edit Delete
11444 For assimilation of one CO₂ molecule via photosynthesis, the energy required in form of ATP and NADPH₂ are: 5 505 Recommended Questions 2 ATP and 2 NADPH₂, 5 ATP and 3 NADPH₂... 3 Edit Delete
11443 Which stage of the Calvin Cycle utilizes ATP? 5 505 Recommended Questions Carboxylation, Reduction... 4 Edit Delete
11442 How many ATPs are required for regeneration of one molecule of RuBP? 5 505 Recommended Questions 2, 3... 2 Edit Delete
11441 Choose the incorrect statement regarding early experiments on photosynthesis 5 505 Recommended Questions Priestley experiment revealed the essential role of air in the growth of a green plant, Ingenhousz showed that sunlight is essential to the plant processes... 4 Edit Delete
11440 Match the following columns and select the correct option. Column-I | Column-II ---------|---------- a. Photolysis of water | (i) C₄ plants b. Carboxylation of RuBP | (ii) Non-cyclic photophosphorylation c. Synthesis of ATP only | (iii) Cyclic photophosphorylation d. Consumption of 5 ATP per CO₂ fixed | (iv) Calvin cycle 5 505 Recommended Questions a (ii), b (iv), c (iii), d (i), a (iii), b (iv), c (ii), d (i)... 1 Edit Delete
11439 If there are 12 molecules of CO₂ to be fixed in photosynthesis, then how many turns of the Calvin cycle and how many molecules of glucose will be synthesized respectively? 5 505 Recommended Questions 9 turns, 2 molecules., 12 turns, 1 molecule.... 4 Edit Delete
11438 How many molecules of 3-PGA are produced during a single run of carboxylation? 5 505 Recommended Questions 3, 1... 3 Edit Delete
11437 The synthesis of one molecule of glucose during the Calvin cycle requires. 5 505 Recommended Questions 12 molecules of ATP and 18 molecules of NADPH₂, 6 molecules of ATP and 12 molecules of NADPH₂... 3 Edit Delete
11436 Which of the following statements is incorrect? 5 505 Recommended Questions RuBisCO is a bifunctional enzyme, In C₄ plants, the site of RuBisCO activity is mesophyll cell... 2 Edit Delete
11435 The first dark reaction or CO₂ fixation product is- 5 505 Recommended Questions 3C – Organic Acid, 6C – Organic Acid... 1 Edit Delete
11434 Dark reaction depends upon- 5 505 Recommended Questions Presence of darkness, Presence of light... 3 Edit Delete
11433 Melvin-Calvin used ------- radioactive in-----studies for the discovery of first CO₂ fixation product. 5 505 Recommended Questions 14C, Fungal photosynthesis, 14C, Algal photosynthesis... 2 Edit Delete
11432 For the formation of one molecule of Glucose, how many turns of fixation are required? 5 505 Recommended Questions 3, 2... 3 Edit Delete
11431 The order of the three steps of Calvin cycle is- 5 505 Recommended Questions Carboxylation- Reduction-Regeneration, Reduction-Regeneration- Carboxylation... 1 Edit Delete
11430 One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of: 5 505 Recommended Questions Violet and green light, Indigo and green light... 4 Edit Delete
11429 What is the primary acceptor of CO₂ in dark reaction? 5 505 Recommended Questions Ketose sugar, Aldose sugar... 1 Edit Delete
11428 The following processes occur during photosynthesis (i) Reduction of carbon dioxide (ii) The splitting of water (iii) The synthesis of glucose (iv) Release of oxygen (v) Formation of ATP Which one of the following combinations is correct for the light phase? 5 505 Recommended Questions i, ii and iii, iii, iv and v... 4 Edit Delete
11427 PS II is not found involved in 5 505 Recommended Questions Non-cyclic photophosphorylation, Cyclic photophosphorylation... 2 Edit Delete
11426 Dark reactions of photosynthesis are actually not totally independent of light as: 5 505 Recommended Questions The initial reactions occur in the presence of light., The reaction will be inhibited by the presence of light.... 4 Edit Delete
11425 ATP and NADPH produced during photosynthesis, are used in which of the following reactions? 5 505 Recommended Questions Catabolic, Biosynthetic phase... 2 Edit Delete
11424 In photosynthesis, energy from light reaction to dark reaction is transferred in the form of: 5 505 Recommended Questions ADP, ATP... 2 Edit Delete
11423 Melvin Calvin used ------- radioactive in-----studies for the discovery of the first CO₂ fixation product. 5 505 Recommended Questions ¹⁴C, Fungal photosynthesis, ¹⁴C, Algal photosynthesis... 2 Edit Delete
11422 Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on: 5 505 Recommended Questions Membrane potential, Accumulation of K ions... 3 Edit Delete
11421 PGA as the first CO₂ fixation was discovered in the photosynthesis of 5 505 Recommended Questions bryophyte, gymnosperm... 4 Edit Delete
11420 Select the Incorrect statement from the following. 5 505 Recommended Questions Nostoc performs oxygenic photosynthesis., During photorespiration, O₂ is first utilized in chloroplast, and CO₂ is released in mitochondria.... 3 Edit Delete
11419 Which of the following statement is correct? 5 505 Recommended Questions H₂S is the hydrogen donor for purple and green sulphur bacteria., H₂O is the hydrogen donor for purple and green sulphur bacteria.... 1 Edit Delete
11418 Proton gradient develops across the thylakoid membrane due to all, except 5 505 Recommended Questions Splitting of water towards lumen side, NADP⁺ reduction towards stroma side... 3 Edit Delete
11417 Chemiosmosis (related with respiration, photosynthesis ETS) does not require 5 505 Recommended Questions Membrane, a proton pump., ATP.... 2 Edit Delete
11416 In plant cells, synthesis of ATP by the chemiosmotic mechanism occurs during 5 505 Recommended Questions Photosynthesis only., Respiration only.... 3 Edit Delete
11415 Identify 'A' with respect to ATP synthesis through chemiosmosis. 5 505 Recommended Questions Cytochromes b and f, Cytochrome a and a₃... 1 Edit Delete
11414 Cyclic photophosphorylation is different from non-cyclic photophosphorylation as the former 5 505 Recommended Questions Is performed by a collaboration of both PS-II and PS-I, Does not require any external source of electrons... 2 Edit Delete
11413 Study the pathway ATP synthesis through chemiosmosis given below – In which of the following options correct words for all the three blanks A, B, C and D are indicated – 5 505 Recommended Questions A – F₁, B – Thylakoid membrane, C – Photosystem (I), D – Photosystem (II), A – F₀, B – Thylakoid membrane, C – Photosystem (I), D – Photosystem (II)... 4 Edit Delete
11412 According to the chemiosmotic hypothesis, there is a basic difference between respiration and photosynthesis. This is _____ 5 505 Recommended Questions In chloroplast, H⁺ accumulation takes place in the lumen of thylakoid but in mitochondria, this takes place in perimitochondrial space., Accumulation of H⁺ in chloroplast takes place in matrix i.e., stroma and in mitochondria, this takes place in cristae.... 1 Edit Delete
11411 Stroma lamella in plastid lacks 5 505 Recommended Questions PS II and PS I., PS II and NADP reductase.... 2 Edit Delete
11410 Where does oxygen come from during photosynthesis? 5 505 Recommended Questions Oxidation of water, Oxidation of glucose... 1 Edit Delete
11409 The first step for initiation of photosynthesis will be: 5 505 Recommended Questions Photolysis of water, Excitement of chlorophyll molecule due to absorption of light... 2 Edit Delete
11408 Blackman's law is related to 5 505 Recommended Questions respiration, transpiration... 4 Edit Delete
11407 Which is not true regarding cyclic electron transfer system (ETS) in thylakoid membrane of higher plants? 5 505 Recommended Questions Operates at low light intensity, Only PS I is involved... 4 Edit Delete
11406 Select the incorrect statement. 5 505 Recommended Questions Carotenoids protect the plant from excessive heat and prevent photo-oxidation of chlorophyll pigments, All pigments other than chlorophyll a are called accessory pigments... 3 Edit Delete
11405 The thylakoid membrane bears several F₀ - F₁ particle ATPase/ATP synthase. Which of the following is incorrect for these particles? 5 505 Recommended Questions Once of its part (F₀) is embedded in the membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane, Its other part (F₁) protrudes out facing towards the stroma... 4 Edit Delete
11404 In a chloroplast the highest number of protons are found in 5 505 Recommended Questions lumen of thylakoids, inter membrane space... 1 Edit Delete
11403 Dark reaction in photosynthesis is called so because 5 505 Recommended Questions It can occur in dark also, It does not depend directly on light energy... 2 Edit Delete
11402 All the following regarding the role of xanthophylls and carotenoids in photosynthesis are correct except: 5 505 Recommended Questions They act as accessory pigments, Their peak absorption is in blue and red regions of VIBGYOR... 2 Edit Delete
11401 Identify i, ii, iii and iv labellings in the following diagram: 5 505 Recommended Questions i: stroma lamella, ii: thylakoid, iii: stroma, iv: genetic material, i: stroma lamella, ii: grana, iii: stroma, iv: starch granule... 2 Edit Delete
11400 The ________ in the leaves have a large number of ________, which align themselves along the walls of the ________, such that they get the ________ quantity of the incident light. 5 505 Recommended Questions chloroplasts, chlorophyll, chloroplasts, optimum., mesophyll cells, chlorophyll, mesophyll cells, optimum.... 3 Edit Delete
11399 Match the following: Column I - Column II i. grana - a. dark reaction ii. Stroma - b. light reaction - c. synthesis of ATP and NADPH⁺H⁺ - d. synthesis of sugar 5 505 Recommended Questions i-b, c; ii-a, d., i-a, d; ii-b, c.... 1 Edit Delete
11398 The correct equation, representing the overall process of photosynthesis is – 5 505 Recommended Questions 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6H₂O + 6O₂, 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂... 3 Edit Delete
11397 Photosynthesis is a- 5 505 Recommended Questions Biochemical process, Physical process... 4 Edit Delete
11396 Which of the following is present in membrane of stroma lamellae? 5 505 Recommended Questions NADP reductase, PS-I... 2 Edit Delete
11395 Which of the following statement is incorrect? 5 505 Recommended Questions Oxygen is released from water., Photosynthesis is a single step reaction.... 2 Edit Delete
11394 Photosynthetically active radiation (PAR) represents the following range of wavelengths: 5 505 Recommended Questions 450-950 nm, 340-450 nm... 3 Edit Delete
11393 Consider the following statements: I: Accessory pigments enable a wider range of light to be utilized for photosynthesis. II: The reaction center of PSI is P680 and that of PSII is P 700. III: The stroma lamellae membranes lack both PSII and NADP reductase. Which of the above statements are true? 5 505 Recommended Questions I and II only, I and III only... 2 Edit Delete
11392 In the given diagram, X, Y, and Z respectively represent the absorption spectrum of: 5 505 Recommended Questions Chlorophyll a, Chlorophyll b, and Carotenoids, Chlorophyll b, Chlorophyll a, and Carotenoids... 3 Edit Delete
11391 In the given graph what does A, B represent? 5 505 Recommended Questions A - Absorption spectrum; B - Action spectrum (Chl. a)., A - Action spectrum; B - Absorption spectrum (carotenoids).... 4 Edit Delete
11390 Absorption spectrum of chlorophyll- 'a' is shown by- 5 505 Recommended Questions I, II... 3 Edit Delete
11389 How many pigments are responsible for the color of a plant leaf? 5 505 Recommended Questions 1, 2... 4 Edit Delete
11388 Which regions of the visible spectrum are responsible for most of the photosynthesis? 5 505 Recommended Questions blue and yellow, blue and red... 2 Edit Delete
11387 Which pigment acts directly to convert light energy to chemical energy? 5 505 Recommended Questions Chlorophyll a., Chlorophyll b.... 1 Edit Delete
11386 Which of the following statements does not justify the importance of photosynthesis? 5 505 Recommended Questions it is the primary source of all food on earth., it is responsible for the release of oxygen into the atmosphere.... 3 Edit Delete
11385 The chloroplast stroma lamella membrane: 5 505 Recommended Questions lacks PS II as well as NADP reductase enzyme., lacks PS II but has NADP reductase enzyme.... 1 Edit Delete
11384 The ________ in the leaves, have a large number of ________, which align themselves along the walls of the ________, such that they get the ________ quantity of the incident light. 5 505 Recommended Questions chloroplasts, chlorophyll, chloroplasts, optimum, mesophyll cells, chlorophyll, mesophyll cells, optimum.... 3 Edit Delete
11383 The energy required for ATP synthesis in PS II comes from 5 505 Recommended Questions Proton gradient, Electron gradient... 1 Edit Delete
11382 82 5 505 Recommended Questions 1, 2... 1 Edit Delete
11381 The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that Adenosine Triphosphate (ATP) is formed because: 5 505 Recommended Questions high energy bonds are formed in mitochondrial proteins, ADP is pumped out of the matrix into the inter-membrane space... 3 Edit Delete
11380 Read the following four statements A, B, C and D and select the right option having both correct statements: STATEMENTS: (A) Z-scheme of light reaction takes place in the presence of PSI only (B) Only PSI functional in cyclic photophosphorylation (C) Cyclic photophosphorylation results in a synthesis of ATP and NADPH₂ (D) Stroma lamellae lack PSII as well as NADP 5 505 Recommended Questions A and B, B and C... 4 Edit Delete
11379 Identify a, b, c and d labellings in the following diagram. 5 505 Recommended Questions i - stroma lamella; ii- thylakoid; iii-stroma; iv-genetic material, i- stroma lamella; ii- grana; iii-stroma; iv-starch granule... 2 Edit Delete
11378 How many of the following statements are correct? i. Products of dark reaction are substrates of light reaction. ii. Products of light reaction are substrates of dark reaction. iii. In the stroma, enzymatic reactions incorporate CO₂ into the plant leading to the synthesis of sugar. iv. Dark reactions are directly light-driven. v. Chloroplast is a single membranous organelle. 5 505 Recommended Questions 2, 3... 1 Edit Delete
11377 Which enzyme catalyzes the reaction of ATP formation during chemiosmosis? 5 505 Recommended Questions ATP hydrolase, ATP synthase... 2 Edit Delete
11376 In chloroplast the movement of electrons from PS-II to electron transport system is- 5 505 Recommended Questions uphill in terms of redox potential scale., downhill in terms of redox potential scale.... 2 Edit Delete
11375 Examine the figure given below and select the wrong option 5 505 Recommended Questions A - Present in only grana lamellae., B - involves downhill movement of electrons in terms of oxidation-reduction potential.... 1 Edit Delete
11374 In photosynthesis, the light-independent reactions take place at 5 505 Recommended Questions thylakoid lumen, photosystem I... 4 Edit Delete
11373 What does chemiosmosis require? 5 505 Recommended Questions membrane, cytosol, proton pump, ATPase, and proton gradient, membrane, cytosol, proton pump, and H-ions... 3 Edit Delete
11372 Final acceptor in the Z-scheme of light reaction- 5 505 Recommended Questions oxygen, NADPH... 3 Edit Delete
11371 In plant cells ATP is synthesised in- 5 505 Recommended Questions mitochondria, chloroplast... 3 Edit Delete
11370 Cyclic-photophosphorylation results in the formation of 5 505 Recommended Questions NADPH, ATP and NADPH... 4 Edit Delete
11369 Light harvesting complexes are made up of- 5 505 Recommended Questions proteins, pigments... 3 Edit Delete
11368 There is a clear division of labour within the chloroplast. The membrane system is responsible for 5 505 Recommended Questions Trapping of light energy, Conversion of CO₂ into glucose... 1 Edit Delete
11367 Which one is the correct sequence of electron transport from PS-II to PS-I? 5 505 Recommended Questions P680—PQ—Cytochrome f—Plastocyanin—P700, P680—Cytochrome f—PQ—Plastocyanin—P700... 1 Edit Delete
11366 What does not cause the proton gradient across the membrane? 5 505 Recommended Questions Splitting of water, Moving electrons through photosystems... 4 Edit Delete
11365 Where does cyclic photo-phosphorylation take place? 5 505 Recommended Questions membranous system of chloroplast, stroma lamellae... 2 Edit Delete
11364 Which of the following is incorrect about the light reactions of photosynthesis? 5 505 Recommended Questions P₆₈₀ and P₇₀₀ are the reaction centres of PS-I and PS-II respectively, Light energy provides energy for the photolysis of water through excitation of the reaction centre of PS-II... 1 Edit Delete
11363 The C₄ plants differ from C₃ plants with reference to the: 5 505 Recommended Questions substrate that accepts CO₂ in carbon assimilation, type of end product... 1 Edit Delete
11362 Which of the following statement is incorrect? 5 505 Recommended Questions Electrons to PS-I are provided by PS-II, Electrons to PS-II are provided by the splitting of water... 3 Edit Delete
11361 In photosystem-I, P700 refers to- 5 505 Recommended Questions chl-b, chl-a... 4 Edit Delete
11360 Non-cyclic photophosphorylation involves – 5 505 Recommended Questions PS-I, PS-II... 3 Edit Delete
11359 59 5 505 Recommended Questions 1, 2... 1 Edit Delete
11358 The reaction centre with respect to cyclic photophosphorylation is 5 505 Recommended Questions P₇₀₀, P₆₈₀... 1 Edit Delete
11357 Where does photosynthesis take place? 5 505 Recommended Questions in green leaves, in green parts of plant... 2 Edit Delete
11356 Synthesis of ATP from ADP and inorganic phosphate in the presence of light is known as- 5 505 Recommended Questions phosphorylation, photo-phosphorylation... 2 Edit Delete
11355 Production of NADPH in a chloroplast takes place during 5 505 Recommended Questions cyclic photophosphorylation, non-cyclic photophosphorylation... 2 Edit Delete
11354 ATP synthesis is linked to- 5 505 Recommended Questions Development of electron gradient, Development of atomic gradient... 3 Edit Delete
11353 Range of wavelength at which chlorophyll-a shows the maximum absorption: 5 505 Recommended Questions 400-450 nm, 450-500 nm... 3 Edit Delete
11352 How many pigments are responsible for the color of a plant leaf? 5 505 Recommended Questions 1, 2... 4 Edit Delete
11351 Which of the following is the chief pigment associated with photosynthesis? 5 505 Recommended Questions chl-a, chl-b... 1 Edit Delete
11350 50 5 505 Recommended Questions 1, 2... 1 Edit Delete
11349 During light reaction in photosynthesis, the following are formed 5 505 Recommended Questions ATP and sugar, hydrogen, O₂ and sugar... 3 Edit Delete
11348 During chemiosmosis, the transport of proton across the membrane occurs through- 5 505 Recommended Questions Active Transport, Facilitated Diffusion... 2 Edit Delete
11347 The protons for the reduction of NADP⁺ are taken from- 5 505 Recommended Questions Stroma, Lumen of Thylakoid... 1 Edit Delete
11346 Cornelius van Niel, who, based on his studies demonstrated that photosynthesis is essentially a light-dependent reaction performed his experiments on- 5 505 Recommended Questions Cladophora, purple and green bacteria... 2 Edit Delete
11345 Where does exactly the NADP reductase enzyme located? 5 505 Recommended Questions Thylakoid lumen, Thylakoid luminal side of membrane... 3 Edit Delete
11344 The difference in development of proton gradient in photosynthesis and respiration is- 5 505 Recommended Questions Photosynthesis has thylakoid membrane across which proton gradient is generated, Proton accumulation is inside the membrane of thylakoid.... 3 Edit Delete
11343 Where does the splitting of water take place? 5 505 Recommended Questions Stroma, Cytoplasm... 3 Edit Delete
11342 Which of the following acts as a transmembrane channel? 5 505 Recommended Questions F₀ of ATPase, F₁ of ATPase... 1 Edit Delete
11341 At low light conditions, which plant responds to high CO₂ conditions? 5 505 Recommended Questions C3, C4... 3 Edit Delete
11340 The first step for initiation of photosynthesis will be: 5 505 Recommended Questions Photolysis of water, Excitement of chlorophyll molecule due to absorption of light... 2 Edit Delete
11339 Which is not true regarding cyclic electron transfer system (ETS) in thylakoid membrane of higher plants? 5 505 Recommended Questions Operates at low light intensity, Only PS I is involved... 4 Edit Delete
11338 Select the incorrect statement. 5 505 Recommended Questions Carotenoids protect the plant from excessive heat and prevent photo-oxidation of chlorophyll pigments, All pigments other than chlorophyll a are called accessory pigments... 3 Edit Delete
11337 The thylakoid membrane bears several F₀ - F₁ particle ATPase/ATP synthase. Which of the following is incorrect for these particles? 5 505 Recommended Questions Once of its part (F₀) is embedded in the membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane, Its other part (F₁) protrudes out facing towards the stroma... 4 Edit Delete
11336 In a chloroplast the highest number of protons are found in 5 505 Recommended Questions lumen of thylakoids, inter membrane space... 1 Edit Delete
11335 Dark reaction in photosynthesis is called so because 5 505 Recommended Questions It can occur in dark also, It does not depend directly on light energy... 2 Edit Delete
11334 All the following regarding the role of xanthophylls and carotenoids in photosynthesis are correct except: 5 505 Recommended Questions They act as accessory pigments, Their peak absorption is in blue and red regions of VIBGYOR... 2 Edit Delete
11333 Identify i, ii, iii and iv labellings in the following diagram: 5 505 Recommended Questions i. stroma lamella, ii. thylakoid, iii. stroma, iv. genetic material, i. stroma lamella, ii. grana, iii. stroma, iv. starch granule... 2 Edit Delete
11332 The __________ in the leaves have a large number of ________, which align themselves along the walls of the __________, such that they get the ________ quantity of the incident light. 5 505 Recommended Questions chloroplasts, chlorophyll, chloroplasts, optimum., mesophyll cells, chlorophyll, mesophyll cells, optimum.... 3 Edit Delete
11331 Match the following: Column I: i. grana, ii. Stroma; Column II: a. dark reaction, b. light reaction, c. synthesis of ATP and NADPH⁺H⁺, d. synthesis of sugar 5 505 Recommended Questions i-b, c; ii-a, d., i-a, d; ii-b, c.... 1 Edit Delete
11330 The correct equation, representing the overall process of photosynthesis is - 5 505 Recommended Questions 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6H₂O + 6O₂, 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂... 3 Edit Delete
11329 C3 plants show saturation at----- ul/L. 5 505 Recommended Questions 450, 360... 1 Edit Delete
11328 Who gave the law of limiting factors and when? 5 505 Recommended Questions Lieman-1906, Blackman-1905... 2 Edit Delete
11327 Water stress may cause which of the following? 5 505 Recommended Questions Closure of stomata, Wilting of leaf... 4 Edit Delete
11326 Which of the following plants are grown in green house by exploiting a fact that higher CO₂ leads more productivity? 5 505 Recommended Questions Tomatoes, Papaya... 1 Edit Delete
11325 Which of the following statements is correct? 5 505 Recommended Questions Photorespiration is useful process., C4 plants are more efficient than C3 plants.... 2 Edit Delete
11324 An action spectrum of photosynthesis was first described by: 5 505 Recommended Questions Jan Ingenhousz, Julius von Sachs... 3 Edit Delete
11323 The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of: 5 505 Recommended Questions 1 molecule of the 3-C compound, 1 molecule of the 6-C compound... 1 Edit Delete
11322 How many of them are wrong? p. RuBisCO is the most abundant enzyme in plants only. q. RuBisCO has active site for O₂ only s. C3 cycle in C4 plants occur in Bundle sheath cells. 5 505 Recommended Questions 2, 3... 1 Edit Delete
11321 In photorespiration (C₂ cycle) 5 505 Recommended Questions Glycolate is oxidised in mitochondria, CO₂ is released in peroxisome... 3 Edit Delete
11320 The evolution of C₄ photosynthetic system is probably one of the strategies for 5 505 Recommended Questions Maximising the availability of CO₂ and minimising the loss of H₂O, Minimising the loss of O₂ and maximising the availability of H₂O... 1 Edit Delete
11319 The product of photorespiration- 5 505 Recommended Questions Phosphoglycerate, Phosphoglycolate... 3 Edit Delete
11318 The __________ in the leaves, have a large number of__________, which align themselves along the walls of the __________, such that they get the __________ quantity of the incident light. 5 505 Recommended Questions chloroplasts, chlorophyll, chloroplasts, optimum, mesophyll cells, chlorophyll, mesophyll cells, optimum.... 3 Edit Delete
11317 Which of the following is wrong regarding photorespiration? 5 505 Recommended Questions utilization of ATP, Production of little sugar... 2 Edit Delete
11316 Why photorespiration does not take place in C₄ plants? 5 505 Recommended Questions Do not contain RuBisCo., Have a mechanism that increases the concentration of CO₂ at the enzyme site.... 2 Edit Delete
11315 The Bundle sheath cells are rich in ------- while lacks----. 5 505 Recommended Questions RuBisCo, PEPCase, PEPCase, RuBisCo... 1 Edit Delete
11314 The binding of RuBisCO for O₂ and CO₂ is - 5 505 Recommended Questions Non-competitive, Competitive... 2 Edit Delete
11313 Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is 5 505 Recommended Questions calcium oxide, distilled water... 3 Edit Delete
11312 The first product of C3 and C4 cycle are: 5 505 Recommended Questions PGA, PGAL, PGA, OAA... 2 Edit Delete
11311 The C₄ plants grow very efficiently in warm climates because they 5 505 Recommended Questions consume fewer ATP molecules for glucose synthesis, minimize photorespiratory losses... 2 Edit Delete
11310 $ ext{In the C4 pathway, which of the following molecules combines with carbon dioxide?}$ 5 505 Recommended Questions $ ext{glyceraldehyde phosphate}$, $ ext{ribulose biphosphate}$... $ ext{phosphoenol pyruvic acid}$ Edit Delete
11309 Which of the following shows the correct match? 5 505 Recommended Questions i-c; ii-b; iii-a, e, f; iv-d, i-a, b; ii-c; iii-d; iv- e, f... 4 Edit Delete
11308 Sunlight is essential for photosynthesis is established by 5 505 Recommended Questions Jan Ingenhousz, Robert Hill... 1 Edit Delete
11307 Choose the incorrect statement regarding early experiments on photosynthesis 5 505 Recommended Questions Priestley experiment revealed the essential role of air in the growth of a green plant, Ingenhousz showed that sunlight is essential to the plant processes... 4 Edit Delete
11306 One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of: 5 505 Recommended Questions Violet and green light, Indigo and green light... 4 Edit Delete
11305 Which of the following statement is correct? 5 505 Recommended Questions H₂S is the hydrogen donor for purple and green sulphur bacteria., H₂O is the hydrogen donor for purple and green sulphur bacteria.... 1 Edit Delete
11304 Blackman's law is related to 5 505 Recommended Questions respiration, transpiration... 4 Edit Delete
11303 Photosynthesis is a- 5 505 Recommended Questions Biochemical process, Physical process... 4 Edit Delete
11302 Which of the following statements does not justify the importance of photosynthesis? 5 505 Recommended Questions it is the primary source of all food on earth., it is responsible for the release of oxygen into the atmosphere.... 3 Edit Delete
11301 Which of the following is not required in photosynthesis? 5 505 Recommended Questions chlorophyll, Light... 4 Edit Delete
11300 $\text{Which of the following relationships between the acceleration } a \text{ and the displacement } x \text{ of a particle involves simple harmonic motion?}$ 1 113 Recommended Questions $a = 0.7x$, $a = -200x^2$... $a = -10x$ Edit Delete
11299 $\text{The velocity-time diagram of a harmonic oscillator is shown in the figure given below. The frequency of oscillation will be:}$ 1 113 Recommended Questions $25 \text{ Hz}$, $50 \text{ Hz}$... $25 \text{ Hz}$ Edit Delete
11298 $\text{The displacement } x \text{ of a particle varies with time } t \text{ as } x = A\sin\left(\frac{2\pi t}{T} + \frac{\pi}{3}\right)$ $\text{. The time taken by the particle to reach from } x = \frac{A}{2} \text{ to } x = -\frac{A}{2} \text{ will be:}$ 1 113 Recommended Questions $\frac{T}{2}$, $\frac{T}{3}$... $\frac{T}{6}$ Edit Delete
11297 $\text{The figure shows the circular motion of a particle. The radius of the circle, the period, the sense of revolution, and the initial position are indicated in the figure. The simple harmonic motion of the } x \text{-projection of the radius vector of the rotating particle } P \text{ will be:}$ 1 113 Recommended Questions $x(t) = B\text{sin}\left(\frac{2\pi t}{30}\right)$, $x(t) = B\text{cos}\left(\frac{\pi t}{15}\right)$... $x(t) = B\text{sin}\left(\frac{2\pi t}{30}\right)$ Edit Delete
11296 $\text{The radius of the circle, the period of revolution, initial position and direction of revolution are indicated in the figure. The } y \text{-projection of the radius vector of rotating particle } P \text{ will be:}$ 1 113 Recommended Questions $y(t) = 3 \text{cos}\left(\frac{\pi t}{2}\right), \text{ where } y \text{ in m}$, $y(t) = -3 \text{cos} \text{ } 2\pi t, \text{ where } y \text{ in m}$... $y(t) = 3 \text{cos}\left(\frac{\pi t}{2}\right), \text{ where } y \text{ in m}$ Edit Delete
11295 $\text{A spring has a spring constant } k \text{. It is cut into two parts } A \text{ and } B \text{ whose lengths are in the ratio of } m : 1 \text{. The spring constant of the part } A \text{ will be:}$ 1 113 Recommended Questions $\frac{k}{m}$, $\frac{k}{m+1}$... $\frac{k(m+1)}{m}$ Edit Delete
11294 $\text{A spring-block system oscillates with a time period } T \text{ on the earth's surface. When the system is brought into a deep mine, the time period of oscillation becomes } T'. \text{ Then, one can conclude that:}$ 1 113 Recommended Questions $T' > T$, $T' < T$... $T' = T$ Edit Delete
11293 $\text{A mass of } 30 \text{ g is attached with two springs having spring constant } 100 \text{ N/m and } 200 \text{ N/m and other ends of springs are attached to rigid walls as shown in the given figure. The angular frequency of oscillation will be}$ 1 113 Recommended Questions $\frac{100}{2\pi} \text{ rad/s}$, $\frac{100}{\pi} \text{ rad/s}$... $100 \text{ rad/s}$ Edit Delete
11292 $\text{All the surfaces are smooth and the system, given below, is oscillating with an amplitude } A. \text{ What is the extension of spring having spring constant } k_1, \text{ when the block is at the extreme position?}$ 1 113 Recommended Questions $\frac{k_1}{k_1 + k_2} A$, $\frac{k_2 A}{k_1 + k_2}$... $\frac{k_2 A}{k_1 + k_2}$ Edit Delete
11291 $\text{When a mass is suspended separately by two different springs, in successive order, then the time period of oscillations is } t_1 \text{ and } t_2 \text{ respectively. If it is connected by both springs as shown in the figure below, then the time period of oscillation becomes } t_0. \text{ The correct relation between } t_0, t_1 \text{ and } t_2 \text{ is:}$ 1 113 Recommended Questions $t_0^2 = t_1^2 + t_2^2$, $t_0^{-2} = t_1^{-2} + t_2^{-2}$... $t_0^{-2} = t_1^{-2} + t_2^{-2}$ Edit Delete
11290 $\text{Two springs, of force constants } \text{k}_1 \text{ and } \text{k}_2 \text{ are connected to a mass } \text{m} \text{ as shown in the figure. The frequency of oscillation of the mass is } \text{f}. \text{If both } \text{k}_1 \text{ and } \text{k}_2 \text{ are made four times their original values, the frequency of oscillation will become:}$ 1 113 Recommended Questions $2\text{f}$, $\text{f}/2$... $2\text{f}$ Edit Delete
11289 $\text{A mass m is suspended from two springs of spring constant } \text{k}_1 \text{ and } \text{k}_2 \text{ as shown in the figure below. The time period of vertical oscillations of the mass will be}$ 1 113 Recommended Questions $2\pi \sqrt{\frac{\text{k}_1+\text{k}_2}{\text{m}}}$, $2\pi \sqrt{\frac{\text{m}}{\text{k}_1+\text{k}_2}}$... $2\pi \sqrt{\frac{\text{m}(\text{k}_1+\text{k}_2)}{\text{k}_1\text{k}_2}}$ Edit Delete
11288 $\text{On a smooth inclined plane, a body of mass } \text{M} \text{ is attached between two springs. The other ends of the springs are fixed to firm supports. If each spring has force constant } \text{K}, \text{ the period of oscillation of the body (assuming the springs as massless) will be:}$ 1 113 Recommended Questions $2\pi \left(\frac{\text{M}}{2\text{K}}\right)^{\frac{1}{2}}$, $2\pi \left(\frac{2\text{M}}{\text{K}}\right)^{\frac{1}{2}}$... $2\pi \left(\frac{\text{M}}{2\text{K}}\right)^{\frac{1}{2}}$ Edit Delete
11287 $\text{In a spring pendulum, in place of mass, a liquid is used. If liquid leaks out continuously, then the time period of the spring pendulum:}$ 1 113 Recommended Questions $\text{decreases continuously}$, $\text{increases continuously}$... $\text{decreases continuously}$ Edit Delete
11286 $\text{A block } \text{P} \text{ of mass } m \text{ is placed on a frictionless horizontal surface. Another block } \text{Q} \text{ of same mass is kept on } \text{P} \text{ and connected to the wall with the help of a spring of spring constant } k \text{ as shown in the figure. } \mu_{s} \text{ is the coefficient of friction between } \text{P} \text{ and } \text{Q}. \text{ The blocks move together performing } \text{SHM} \text{ of amplitude } \text{A}. \text{ The maximum value of the friction force between } \text{P} \text{ and } \text{Q} \text{ will be:}$ 1 113 Recommended Questions $k\text{A}$, $\frac{k\text{A}}{2}$... $\frac{k\text{A}}{2}$ Edit Delete
11285 $\text{The time period of a spring mass system at the surface of the earth is } 2 \text{ s.} \\ \text{What will be the time period of this system on the moon where the acceleration due to gravity is } \frac{1}{16}^{\text{th}} \text{ of the value of } g \text{ on the earth's surface?}$ 1 113 Recommended Questions $\frac{1}{\sqrt{6}}\text{ s}$, $2\sqrt{6}\text{ s}$... $2\text{ s}$ Edit Delete
11284 $\text{All the surfaces are smooth and springs are ideal. If a block of mass } m \text{ is given the velocity } v_0 \text{ in the right direction, then the time period of the block shown in the figure will be:}$ 1 113 Recommended Questions $\frac{12l}{v_0}$, $\frac{2l}{v_0} + \frac{3\pi}{2} \sqrt{\frac{m}{k}}$... $\frac{4l}{v_0} + \frac{3\pi}{2} \sqrt{\frac{m}{k}}$ Edit Delete
11283 $\text{All the surfaces are smooth and springs are ideal. If a block of mass } m \text{ is given the velocity } v_0 \text{ in the right direction, then the time period of the block shown in the figure will be:}$ 1 113 Recommended Questions $\frac{12l}{v_0}$, $\frac{2l}{v_0} + \frac{3\pi}{2} \sqrt{\frac{m}{k}}$... $\frac{4l}{v_0} + \frac{3\pi}{2} \sqrt{\frac{m}{k}}$ Edit Delete
11282 $\text{A block is connected to a relaxed spring and kept on a smooth floor. The block is given a velocity towards the right. Just after this:}$ 1 113 Recommended Questions $\text{the speed of block starts decreasing but acceleration starts increasing.}$, $\text{the speed of the block as well as its acceleration starts decreasing.}$... $\text{the speed of block starts decreasing but acceleration starts increasing.}$ Edit Delete
11281 $\text{An ideal spring with spring-constant } K \text{ is hung from the ceiling and a block of mass } M \text{ is attached to its lower end. The mass is released with the spring initially un-stretched. Then the maximum extension in the spring will be:}$ 1 113 Recommended Questions $4Mg/K$, $2Mg/K$... $2Mg/K$ Edit Delete
11280 $\text{A spring elongates by a length 'L' when a mass 'M' is suspended to it. Now a tiny mass 'm' is attached to the mass 'M' and then released. The new time period of oscillation will be:}$ 1 113 Recommended Questions $2\pi \sqrt{\frac{(M+m)l}{Mg}}$, $2\pi \sqrt{\frac{ml}{Mg}}$... $2\pi \sqrt{\frac{(M+m)l}{Mg}}$ Edit Delete
11279 $\text{The time period of a mass suspended from a spring is } T. \text{ If the spring is cut into four equal parts and the same mass is suspended from one of the parts, then the new time period will be:}$ 1 113 Recommended Questions $\frac{T}{4}$, $T$... $\frac{T}{2}$ Edit Delete
11278 $\text{A spring having a spring constant of 1200 N/m is mounted on a horizontal table as shown in the figure. A mass of 3 kg is attached to the free end of the spring. The mass is then pulled sideways to a distance of 2.0 cm and released. The frequency of oscillations will be:}$ 1 113 Recommended Questions $3.0 \text{ s}^{-1}$, $2.7 \text{ s}^{-1}$... $3.2 \text{ s}^{-1}$ Edit Delete
11277 $\text{One end of a spring of force constant } k \text{ is fixed to a vertical wall and the other to a block of mass } m \text{ resting on a smooth horizontal surface. There is another wall at a distance } x_0 \text{ from the block. The spring is then compressed by } 2x_0 \text{ and then released. The time taken to strike the wall will be?}$ 1 113 Recommended Questions $\frac{1}{6} \pi \sqrt{\frac{k}{m}}$, $\sqrt{\frac{k}{m}}$... $\frac{2\pi}{3} \sqrt{\frac{m}{k}}$ Edit Delete
11276 $\text{The period of oscillation of a mass } M \text{ suspended from a spring of negligible mass is } T. \text{ If along with it, another mass } M \text{ is also suspended, the period of oscillation will now be:}$ 1 113 Recommended Questions $T$, $\frac{T}{\sqrt{2}}$... $\sqrt{2}T$ Edit Delete
11275 $\text{The frequency of a spring is } n \text{ after suspending mass } M. \text{ Now, after mass } 4M \text{ mass is suspended from the spring, the frequency will be:}$ 1 113 Recommended Questions $2n$, $\frac{n}{2}$... $\frac{n}{2}$ Edit Delete
11274 $\text{The time periods for figures (a) and (b) are } T_1 \text{ and } T_2 \text{ respectively. If all surfaces shown below are smooth, then the ratio } \frac{T_1}{T_2} \text{ will be:}$ 1 113 Recommended Questions $1 : \sqrt{3}$, $1 : 1$... $1 : 1$ Edit Delete
11273 $\text{The time period of the spring-mass system depends upon:}$ 1 113 Recommended Questions $\text{the gravity of the earth}$, $\text{the mass of the block}$... both (2) & (3) Edit Delete
11272 $\text{A particle is attached to a vertical spring and pulled down a distance of 0.01 m below its mean position and released. If its initial acceleration is } 0.16 \text{ m/s}^2\text{, then its time period in seconds will be:}$ 1 113 Recommended Questions $\pi$, $\frac{\pi}{2}$... $\frac{\pi}{2}$ Edit Delete
11271 $\text{Given below are two statements:}$ $\text{Assertion (A): If the bob of a simple pendulum is kept in a horizontal electric field, its period of oscillation will remain the same.}$ $\text{Reason (R): If bob is charged and kept in a horizontal electric field, then the time period will be decreased.}$ 1 113 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{(A) is False but (R) is True.}$ Edit Delete
11270 $\text{A simple pendulum is oscillating without damping. When the displacement of the bob is less than maximum, its acceleration vector } \vec{a} \text{ is correctly shown in:}$ 1 113 Recommended Questions $\text{Option 1: Acceleration vector pointing up and to the left}$, $\text{Option 2: Acceleration vector pointing down and to the right}$... $\text{Option 3: Acceleration vector pointing down and to the left}$ Edit Delete
11269 $\text{A simple pendulum of mass } m \text{ swings about point } B \text{ between extreme positions } A \text{ and } C\text{. Net force acting on the bob at these three points is correctly shown by:}$ 1 113 Recommended Questions $\text{Option 1: Forces at A and C point toward B, force at B points downward}$, $\text{Option 2: Forces at A and C point toward B, force at B points upward}$... $\text{Option 2: Forces at A and C point toward B, force at B points upward}$ Edit Delete
11268 $\text{Two simple pendulums of length 1 m and 16 m are in the same phase at the mean position at any instant. If } T \text{ is the time period of the smaller pendulum, then the minimum time after which they will again be in the same phase will be:}$ 1 113 Recommended Questions $\frac{3T}{2}$, $\frac{3T}{4}$... $\frac{4T}{3}$ Edit Delete
11267 $\text{A simple pendulum hanging from the ceiling of a stationary lift has a time period } T_1. \text{ When the lift moves downward with constant velocity, then the time period becomes } T_2. \text{ It can be concluded that:}$ 1 113 Recommended Questions $T_2 \text{ is infinity}$, $T_2 > T_1$... $T_2 = T_1$ Edit Delete
11266 $\text{The period of oscillation of a simple pendulum of length } L \text{ suspended from the roof of a vehicle which moves without friction down an inclined plane of inclination } \theta, \text{ is given by:}$ 1 113 Recommended Questions $2\pi \sqrt{\frac{L}{g \cos \theta}}$, $2\pi \sqrt{\frac{L}{g \sin \theta}}$... $2\pi \sqrt{\frac{L}{g \cos \theta}}$ Edit Delete
11265 $\text{A simple pendulum is pushed slightly from its equilibrium towards the left and then set free to execute the simple harmonic motion. Select the correct graph between its velocity } (v) \text{ and displacement } (x).$ 1 113 Recommended Questions $\text{Hyperbolic curve opening towards upper and lower right}$, $\text{S-shaped curve}$... $\text{Elliptical curve}$ Edit Delete
11264 $\text{The frequency of a simple pendulum in a free-falling lift will be:}$ 1 113 Recommended Questions $\text{zero}$, $\text{infinite}$... $\text{zero}$ Edit Delete
11263 $\text{A spring pendulum is placed on a rotating table. The initial angular velocity of the table is } \omega_0 \text{ and the time period of the pendulum is } T_0\text{. If the angular velocity of the table becomes } 2\omega_0\text{, then the new time period of the pendulum will be:}$ 1 113 Recommended Questions $2T_0$, $T_0\sqrt{2}$... $\text{the same}$ Edit Delete
11262 $\text{A spring pendulum is placed on a rotating table. The initial angular velocity of the table is } \omega_0 \text{ and the time period of the pendulum is } T_0\text{. If the angular velocity of the table becomes } 2\omega_0\text{, then the new time period of the pendulum will be:}$ 1 113 Recommended Questions $2T_0$, $T_0\sqrt{2}$... $\text{the same}$ Edit Delete
11261 $\text{A pendulum has time period } T\text{. If it is taken on to another planet having acceleration due to gravity half and mass 9 times that of the earth, then its time period on the other planet will be:}$ 1 113 Recommended Questions $\sqrt{T}$, $T$... $\sqrt{2T}$ Edit Delete
11260 $\text{In a simple pendulum, the period of oscillation } T \text{ is related to the length of the pendulum } L \text{ as:}$ 1 113 Recommended Questions $\frac{L}{T} = \text{constant}$, $\frac{L^2}{T} = \text{constant}$... $\frac{L}{T^2} = \text{constant}$ Edit Delete
11259 $\text{If the length of a pendulum is made 9 times and the mass of the bob is made 4 times, then the value of time period will become:}$ 1 113 Recommended Questions $3T$, $\frac{3}{2}T$... $3T$ Edit Delete
11258 $\text{Given below are two statements:}$ $\text{Statement I: If the acceleration of a particle is directed towards a fixed point, and proportional to the distance from that point – the motion is SHM.}$ $\text{Statement II: During SHM, the kinetic energy of the particle oscillates at twice the frequency of the SHM.}$ 1 113 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... $\text{Statement I is incorrect and Statement II is correct.}$ Edit Delete
11257 $\text{A particle is executing SHM with time period } T. \text{ If the time period of its total mechanical energy is } T', \text{ then } \frac{T'}{T} \text{ will be:}$ 1 113 Recommended Questions $2$, $\frac{1}{2}$... $\text{Infinite}$ Edit Delete
11256 $\text{For a particle executing simple harmonic motion, the kinetic energy is given by } K = K_0 \cos^2 \omega t. \text{ The maximum value of potential energy for the given particle:}$ 1 113 Recommended Questions $\text{maybe } K_0$, $\text{must be } K_0$... $\text{both (1) and (3)}$ Edit Delete
11255 $\text{A particle of mass } m \text{ is released from rest and follows a parabolic path as shown. Assuming that the displacement of the mass from the origin is small, which graph correctly depicts the position of the particle as a function of time?}$ 1 113 Recommended Questions $x(t) \text{ shows a curve that increases to a peak and then decreases back toward zero}$, $x(t) \text{ shows oscillatory motion with positive and negative values}$... $x(t) \text{ shows cosine-like oscillation starting from maximum amplitude}$ Edit Delete
11254 $\text{A body is executing simple harmonic motion. At a displacement } x\text{, its potential energy is } E_1 \text{ and at a displacement } y\text{, its potential energy is } E_2\text{. The potential energy } E \text{ at displacement } x + y \text{ will be?}$ 1 113 Recommended Questions $E = \sqrt{E_1} + \sqrt{E_2}$, $\sqrt{E} = \sqrt{E_1} + \sqrt{E_2}$... $\sqrt{E} = \sqrt{E_1} + \sqrt{E_2}$ Edit Delete
11253 $\text{A particle is executing SHM according to } y = a \cos \omega t\text{. Then, which of the following graphs represent variations of potential energy?}$ 1 113 Recommended Questions $\text{I and III}$, $\text{II and IV}$... $\text{II and III}$ Edit Delete
11252 $\text{Two simple harmonic motions, } y_1 = a \sin \omega t \text{ and } y_2 = 2a \sin \left(\omega t + \frac{2\pi}{3}\right) \text{ are superimposed on a particle of mass } m\text{. The maximum kinetic energy of the particle will be:}$ 1 113 Recommended Questions $\frac{1}{2}m\omega^2 a^2$, $\frac{5}{4}m\omega^2 a^2$... $\frac{3}{2}m\omega^2 a^2$ Edit Delete
11251 $\text{A particle is executing simple harmonic motion with frequency } f. \text{ The frequency at which its kinetic energy changes into potential energy, will be:}$ 1 113 Recommended Questions $\frac{f}{2}$, $f$... $2f$ Edit Delete
11250 $\text{A particle executing simple harmonic motion has a kinetic energy of } K_0 \cos^2(\omega t). \text{ The values of the maximum potential energy and the total energy are, respectively:}$ 1 113 Recommended Questions $0 \text{ and } 2K_0$, $\frac{K_0}{2} \text{ and } K_0$... $K_0 \text{ and } K_0$ Edit Delete
11249 $\text{The potential energy of a particle oscillating along the } x\text{-axis is given as } U = 20 + (x - 2)^2 \text{ where } U \text{ is in joules and } x \text{ in metres. The total mechanical energy of the particle is 36 J. The maximum kinetic energy of the particle will be:}$ 1 113 Recommended Questions $24 \text{ J}$, $36 \text{ J}$... $16 \text{ J}$ Edit Delete
11248 $\text{The kinetic energy of a particle executing SHM is 16 J when it is in its mean position. If the amplitude of oscillations is 25 cm and the mass of the particle is 5.12 kg, the time period of its oscillation will be:}$ 1 113 Recommended Questions $\frac{\pi}{5} \text{ s}$, $2\pi \text{ s}$... $\frac{\pi}{5} \text{ s}$ Edit Delete
11247 $\text{The displacement between the maximum potential energy position and maximum kinetic energy position for a particle executing simple harmonic motion is:}$ 1 113 Recommended Questions $\pm \frac{a}{2}$, $+a$... $\pm a$ Edit Delete
11246 $\text{If the potential energy } U \text{ (in J) of a body executing SHM is given by } U = 20 + 10(\sin^2 100\pi t), \text{ then the minimum potential energy of the body will be:}$ 1 113 Recommended Questions $\text{Zero}$, $30 \text{ J}$... $20 \text{ J}$ Edit Delete
11245 $\text{A particle of mass } m \text{ oscillates in simple harmonic motion between points } X_1 \text{ and } X_2, \text{ the equilibrium position being } O. \text{ Its kinetic energy is correctly represented by which of the following graphs?}$ 1 113 Recommended Questions $\text{Graph 1: Shows a parabola opening downward with maximum at equilibrium position } O \text{ and minimum at extreme positions } X_1 \text{ and } X_2$, $\text{Graph 2: Shows a sinusoidal wave with minimum at equilibrium position } O \text{ and maximum at extreme positions } X_1 \text{ and } X_2$... $\text{Graph 1: Shows a parabola opening downward with maximum at equilibrium position } O \text{ and minimum at extreme positions } X_1 \text{ and } X_2$ Edit Delete
11244 $\text{A particle executes SHM with a frequency of 20 Hz. The frequency with which its potential energy oscillates is:}$ 1 113 Recommended Questions $5 \text{ Hz}$, $20 \text{ Hz}$... $40 \text{ Hz}$ Edit Delete
11243 $\text{The total energy of a particle, executing simple harmonic motion is:}$ 1 113 Recommended Questions $\propto x$, $\propto x^2$... $\text{Independent of } x$ Edit Delete
11242 $\text{Kinetic energy of a particle executing simple harmonic motion in straight line is } pv^2 \text{ and potential energy is } qx^2, \text{ where } v \text{ is speed at distance } x \text{ from the mean position. The time period of the SHM is given by the expression:}$ 1 113 Recommended Questions $2\pi\sqrt{\frac{q}{p}}$, $2\pi\sqrt{\frac{p}{q}}$... $2\pi\sqrt{\frac{p}{q}}$ Edit Delete
11241 $\text{A block of mass 4 kg hangs from a spring of spring constant } k = 400 \text{ N/m. The block is pulled down through 15 cm below the equilibrium position and released. What is its kinetic energy when the block is 10 cm below the equilibrium position? [Ignore gravity]}$ 1 113 Recommended Questions $5 \text{ J}$, $2.5 \text{ J}$... $2.5 \text{ J}$ Edit Delete
11240 $\text{The kinetic energy (K) of a simple harmonic oscillator varies with displacement (x) as shown. The period of the oscillation will be: (mass of oscillator is 1 kg)}$ 1 113 Recommended Questions $\frac{\pi}{2} \text{ s}$, $\frac{1}{2} \text{ s}$... $\frac{\pi}{2} \text{ s}$ Edit Delete
11239 $\text{The potential energy of a simple harmonic oscillator, when the particle is halfway to its endpoint, will be:}$ 1 113 Recommended Questions $\frac{2E}{3}$, $\frac{E}{8}$... $\frac{E}{4}$ Edit Delete
11238 $\text{When the displacement is half the amplitude in an SHM, the ratio of potential energy to the total energy is:}$ 1 113 Recommended Questions $\frac{1}{2}$, $\frac{1}{4}$... $\frac{1}{4}$ Edit Delete
11237 $\text{Equation of a simple harmonic motion is given by } x = a \sin \omega t. \text{ For which value of } x, \text{ kinetic energy is equal to the potential energy?}$ 1 113 Recommended Questions $x = \pm a$, $x = \pm \frac{a}{2}$... $x = \pm \frac{a}{\sqrt{2}}$ Edit Delete
11236 $\text{A particle of mass } m \text{ oscillates with simple harmonic motion between points } x_1 \text{ and } x_2, \text{ the equilibrium position being } O. \text{ Its potential energy is plotted. It will be as given below in the graph:}$ 1 113 Recommended Questions $\text{Parabolic curve with minimum at equilibrium position } O$, $\text{Inverted parabolic curve with maximum at equilibrium position } O$... $\text{Parabolic curve with minimum at equilibrium position } O$ Edit Delete
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11188 4 1 113 Recommended Questions 1, 2... 4 Edit Delete
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11186 2 1 113 Recommended Questions 1, 2... 3 Edit Delete
11185 1 1 113 Recommended Questions 1, 2... 4 Edit Delete
11184 $\text{According to the kinetic theory of gases,}$ $\text{Choose the most appropriate answer from the options given below:}$ 1 112 Recommended Questions $\text{(A) and (C) only}$, $\text{(B) and (C) only}$... $\text{(B) and (C) only}$ Edit Delete
11183 $\text{When the gas in an open container is heated, the mean free path:}$ 1 112 Recommended Questions $\text{Increases}$, $\text{Decreases}$... $\text{Increases}$ Edit Delete
11182 $\text{If the pressure in a closed vessel is reduced by drawing out some gas, the mean free path of the molecules:}$ 1 112 Recommended Questions $\text{decreases}$, $\text{increases}$... $\text{increases}$ Edit Delete
11181 $\text{If the mean free path of atoms is doubled, then the pressure of the gas will become:}$ 1 112 Recommended Questions $\frac{P}{4}$, $\frac{P}{2}$... $\frac{P}{2}$ Edit Delete
11180 $\text{The mean free path for a gas, with molecular diameter } d \text{ and number density } n, \text{ can be expressed as:}$ 1 112 Recommended Questions $\frac{1}{\sqrt{2\pi nd^2}}$, $\frac{1}{\sqrt{2n^2\pi d^2}}$... $\frac{1}{\sqrt{2\pi nd^2}}$ Edit Delete
11179 $\text{The mean free path for a gas, with molecular diameter }d\text{ and number density }n\text{, can be expressed as:}$ 1 112 Recommended Questions $\frac{1}{\sqrt{2n\pi d^2}}$, $\frac{1}{\sqrt{2n^2\pi d^2}}$... $\frac{1}{\sqrt{2n\pi d^2}}$ Edit Delete
11178 $\text{The mean free path } l \text{ for a gas molecule depends upon the diameter, } d \text{ of the molecule as:}$ 1 112 Recommended Questions $l \propto \frac{1}{d^2}$, $l \propto d$... $l \propto \frac{1}{d^2}$ Edit Delete
11177 $\text{A cylinder of fixed capacity 44.8 litres contains helium gas at standard temperature and pressure. What is the amount of heat needed to raise the temperature of the gas in the cylinder by }15.0^\circ\text{C}? (R = 8.31\text{ J mol}^{-1}\text{K}^{-1})$ 1 112 Recommended Questions $379\text{ J}$, $357\text{ J}$... $374\text{ J}$ Edit Delete
11176 $\text{The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from } T_1 \text{ K to } T_2 \text{ K is:}$ 1 112 Recommended Questions $\frac{3}{2} N_a k_B (T_2 - T_1)$, $\frac{5}{2} N_a k_B (T_2 - T_1)$... $\frac{3}{8} N_a k_B (T_2 - T_1)$ Edit Delete
11175 $\text{The value of } C_P - C_v = 1.00R \text{ for a gas in state A and } C_P - C_v = 1.06R \text{ in another state B. If } P_A \text{ and } P_B \text{ denote the pressure and } T_A \text{ and } T_B \text{ denote the temperatures in the two states, then:}$ 1 112 Recommended Questions $P_A = P_B; T_A > T_B$, $P_A > P_B; T_A = T_B$... $P_A < P_B; T_A > T_B$ Edit Delete
11174 $\text{The specific heat of a gas:}$ 1 112 Recommended Questions $\text{has only two values } C_p \text{ and } C_v.$, $\text{has a unique value at a given temperature.}$... $\text{can have any value between 0 and } \infty.$ Edit Delete
11173 $\text{For hydrogen gas, the difference between molar specific heats is given by: } C_P - C_V = a \text{, and for oxygen gas, } C_P - C_V = b \text{. Here, } C_P \text{ and } C_V \text{ are molar specific heats expressed in } \text{J mol}^{-1}\text{K}^{-1} \text{. What is the relationship between } a \text{ and } b\text{?}$ 1 112 Recommended Questions $a = 16b$, $b = 16a$... $a = b$ Edit Delete
11172 $\text{If } C_P \text{ and } C_V \text{ denote the specific heats (per unit mass) of an ideal gas of molecular weight } M \text{ (where } R \text{ is the molar gas constant), the correct relation is:}$ 1 112 Recommended Questions $C_P - C_V = R$, $C_P - C_V = \frac{R}{M}$... $C_P - C_V = \frac{R}{M}$ Edit Delete
11171 $\text{The specific heat of an ideal gas is:}$ 1 112 Recommended Questions $\text{proportional to } T\text{.}$, $\text{proportional to } T^2\text{.}$... $\text{independent of } T\text{.}$ Edit Delete
11170 $\text{The figure shows a process for a gas in which pressure (P) and volume (V) of the gas change. If } C_1 \text{ and } C_2 \text{ are the molar heat capacities of the gas during the processes AB and BC respectively, then:}$ 1 112 Recommended Questions $C_1 = C_2$, $C_1 > C_2$... $C_1 < C_2$ Edit Delete
11169 $\text{Given below are two statements:}$ $\text{Assertion (A): The ratio } \frac{C_p}{C_v} \text{ is more for helium gas than for hydrogen gas.}$ $\text{Reason (R): Atomic mass of helium is more than that of hydrogen.}$ 1 112 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{(A) is True but (R) is False.}$ Edit Delete
11168 $\text{The ratio of the specific heats } \frac{C_P}{C_V} = \gamma \text{ in terms of degrees of freedom } (n) \text{ is given by:}$ 1 112 Recommended Questions $1 + \frac{1}{n}$, $1 + \frac{n}{3}$... $1 + \frac{2}{n}$ Edit Delete
11167 $\text{The relation between two specific heats (in cal/mol) of a gas is:}$ 1 112 Recommended Questions $C_P - C_V = \frac{R}{J}$, $C_V - C_P = \frac{R}{J}$... $C_P - C_V = \frac{R}{J}$ Edit Delete
11166 $\text{Which one of the following gases possesses the largest internal energy?}$ 1 112 Recommended Questions $2 \text{ moles of helium occupying } 1 \text{ m}^3 \text{ at } 300 \text{ K}$, $56 \text{ kg of nitrogen at } 10^5 \text{ Nm}^{-2} \text{ and } 300 \text{ K}$... $56 \text{ kg of nitrogen at } 10^5 \text{ Nm}^{-2} \text{ and } 300 \text{ K}$ Edit Delete
11165 $\text{Mean kinetic energy per degree of freedom of gas molecules is:}$ 1 112 Recommended Questions $\frac{3}{2}kT$, $kT$... $\frac{1}{2}kT$ Edit Delete
11164 $\text{Which of the following statements about degrees of freedom are correct?}$ $\text{(A) A molecule with } n \text{ degrees of freedom has } n^2 \text{ different ways of storing energy.}$ $\text{(B) Each degree of freedom is associated with an average energy of } \frac{1}{2}RT \text{ per mole.}$ $\text{(C) A monoatomic gas molecule has 1 rotational degree of freedom whereas a diatomic molecule has 2 rotational degrees of freedom.}$ $\text{(D) } \text{CH}_4 \text{ has a total of 6 degrees of freedom.}$ $\text{Choose the correct option from the options given below:}$ 1 112 Recommended Questions $\text{(B) and (C) only}$, $\text{(B) and (D) only}$... $\text{(B) and (D) only}$ Edit Delete
11163 $\text{Mean kinetic energy per degree of freedom of gas molecules is:}$ 1 112 Recommended Questions $\frac{3}{2}kT$, $kT$... $\frac{1}{2}kT$ Edit Delete
11162 $\text{The pressure in a diatomic gas increases from } P_0 \text{ to } 3P_0\text{, when its volume is increased from } V_0 \text{ to } 2V_0\text{. The increase in internal energy will be:}$ 1 112 Recommended Questions $6P_0 V_0$, $8.5P_0 V_0$... $12.5P_0 V_0$ Edit Delete
11161 $\text{Mean kinetic energy per degree of freedom of gas molecules is:}$ 1 112 Recommended Questions $\frac{3}{2}kT$, $kT$... $\frac{1}{2}kT$ Edit Delete
11160 $\text{One mole of an ideal diatomic gas undergoes a transition from } A \text{ to } B \text{ along a path } AB \text{ as shown in the figure.}$ $\text{The change in internal energy of the gas during the transition is:}$ 1 112 Recommended Questions $20 \text{ kJ}$, $-20 \text{ kJ}$... $-20 \text{ kJ}$ Edit Delete
11159 $\text{A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300 K. The ratio of the average rotational kinetic energy per } \text{O}_2 \text{ molecule to that per } \text{N}_2 \text{ molecule is:}$ 1 112 Recommended Questions $1 : 1$, $1 : 2$... $1 : 1$ Edit Delete
11158 $\text{The change in the internal energy of an ideal gas does not depend on?}$ 1 112 Recommended Questions $\text{Number of moles}$, $\text{Change in temperature}$... $\text{Specific heat at constant pressure } C_p \text{ of the gas}$ Edit Delete
11157 $\text{A gas mixture consists of 2 moles of } \text{O}_2 \text{ and 4 moles of Ar at temperature } T. \text{ Neglecting all the vibrational modes, the total internal energy of the system is:}$ 1 112 Recommended Questions $15RT$, $9RT$... $11RT$ Edit Delete
11156 $\text{In the PV graph shown below for an ideal diatomic gas, the change in the internal energy is:}$ 1 112 Recommended Questions $\frac{3}{2}P(V_2 - V_1)$, $\frac{5}{2}P(V_2 - V_1)$... $\frac{5}{2}P(V_2 - V_1)$ Edit Delete
11155 $\text{At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the earth's atmosphere?}$ $\text{(Given: Mass of oxygen molecule } (m) = 2.76 \times 10^{-26} \text{ kg, Boltzmann's constant } k_B = 1.38 \times 10^{-23} \text{ J K}^{-1})$ 1 112 Recommended Questions $2.508 \times 10^4 \text{ K}$, $8.360 \times 10^4 \text{ K}$... $8.360 \times 10^4 \text{ K}$ Edit Delete
11154 $\text{At what temperature is the root mean square speed of molecules of hydrogen twice as that at STP?}$ 1 112 Recommended Questions $273 \text{ K}$, $546 \text{ K}$... $1092 \text{ K}$ Edit Delete
11153 $\text{The root mean square speed of the molecules of a diatomic gas is } v. \text{ When the temperature is doubled, the molecules dissociate into two atoms. The new root mean square speed of the atom is:}$ 1 112 Recommended Questions $\sqrt{2}v$, $v$... $2v$ Edit Delete
11152 $\text{The rms speed of oxygen atoms is } v. \text{ If the temperature is halved and the oxygen atoms combine to form oxygen molecules, then the rms speed will be:}$ 1 112 Recommended Questions $\frac{v}{\sqrt{2}}$, $v\sqrt{2}$... $\frac{v}{2}$ Edit Delete
11151 $\text{The curve between absolute temperature and } v_{\text{rms}}^2 \text{ is:}$ 1 112 Recommended Questions $\text{Curved line starting from origin, increasing at decreasing rate}$, $\text{Straight line passing through origin}$... $\text{Straight line passing through origin}$ Edit Delete
11150 $\text{Uranium has two isotopes of masses 235 and 238 units. If both are present in Uranium hexafluoride gas, which would have the larger average speed?}$ 1 112 Recommended Questions $^{235}\text{UF}_6$, $^{238}\text{UF}_6$... $^{235}\text{UF}_6$ Edit Delete
11149 $\text{The Earth's atmosphere contains both oxygen and nitrogen. The mass of an oxygen molecule is greater than that of a nitrogen molecule. On a certain day, the temperature of air in a room is 300 K.}$ $\text{Consider the following statements regarding the motion of oxygen and nitrogen molecules:}$ $\text{(A) Both gases have the same mean square velocity } (v^2).$ $\text{(B) Nitrogen molecules have a greater mean square velocity } (v^2) \text{ than oxygen molecules.}$ $\text{(C) Nitrogen molecules have a greater mean kinetic energy than oxygen molecules.}$ $\text{(D) Oxygen molecules have a greater mean kinetic energy than nitrogen molecules.}$ $\text{Choose the correct option from the options given below:}$ 1 112 Recommended Questions $\text{(A) only}$, $\text{(A) and (C) only}$... $\text{(B) only}$ Edit Delete
11148 $\text{The rms speed of the molecules of an enclosed gas is } v. \text{ What will be the rms speed if the pressure is doubled, keeping the temperature constant?}$ 1 112 Recommended Questions $\frac{v}{2}$, $v$... $v$ Edit Delete
11147 $\text{At which temperature the velocity of } \text{O}_2 \text{ molecules will be equal to the velocity of } \text{N}_2 \text{ molecules at } 0°\text{C}?$ 1 112 Recommended Questions $40°\text{C}$, $93°\text{C}$... $39°\text{C}$ Edit Delete
11146 $\text{If the ratio of vapour density for hydrogen and oxygen is } \frac{1}{16}, \text{ then under constant pressure, the ratio of their RMS velocities will be:}$ 1 112 Recommended Questions $\frac{4}{1}$, $\frac{1}{4}$... $\frac{4}{1}$ Edit Delete
11145 $\text{The molecules of a given mass of gas have rms velocity of 200 ms}^{-1} \text{ at 27°C and 1.0 × 10}^5 \text{ Nm}^{-2} \text{ pressure. When the temperature and pressure of the gas are increased to, respectively, 127°C and 0.05 × 10}^5 \text{ Nm}^{-2}\text{, rms velocity of its molecules in ms}^{-1} \text{ will become:}$ 1 112 Recommended Questions $\frac{400}{\sqrt{3}}$, $\frac{100\sqrt{2}}{3}$... $\frac{400}{\sqrt{3}}$ Edit Delete
11144 $\text{The root mean square velocity of the molecules of a gas is 300 m/s. What will be the root mean square speed of the molecules if the atomic weight is doubled and the absolute temperature is halved?}$ 1 112 Recommended Questions $300 \text{ m/s}$, $150 \text{ m/s}$... $150 \text{ m/s}$ Edit Delete
11143 $\text{The molecular weight of two gases is } M_1 \text{ and } M_2. \text{ At any temperature, the ratio of root mean square velocities } v_1 \text{ and } v_2 \text{ will be:}$ 1 112 Recommended Questions $\sqrt{\frac{M_1}{M_2}}$, $\sqrt{\frac{M_2}{M_1}}$... $\sqrt{\frac{M_2}{M_1}}$ Edit Delete
11142 $\text{If } \text{V}_{\text{H}}, \text{V}_{\text{N}} \text{ and } \text{V}_{\text{O}} \text{ denote the root-mean square velocities of molecules of hydrogen, nitrogen and oxygen respectively at a given temperature, then:}$ 1 112 Recommended Questions $\text{V}_{\text{N}} > \text{V}_{\text{O}} > \text{V}_{\text{H}}$, $\text{V}_{\text{H}} > \text{V}_{\text{N}} > \text{V}_{\text{O}}$... $\text{V}_{\text{H}} > \text{V}_{\text{N}} > \text{V}_{\text{O}}$ Edit Delete
11141 $\text{1 mole of an ideal gas is contained in a cubical volume V, ABCDEFGH at 300 K (figure). One face of the cube (EFGH) is made up of a material which totally absorbs any gas molecule incident on it. At any given time:}$ 1 112 Recommended Questions $\text{the pressure on EFGH would be zero.}$, $\text{the pressure on all the faces will be equal.}$... $\text{the pressure on EFGH would be half that on ABCD.}$ Edit Delete
11140 $\text{When an ideal gas is compressed adiabatically, its temperature rises: the molecules on an average have more kinetic energy than before. The kinetic energy increases:}$ 1 112 Recommended Questions $\text{because of collisions with moving parts of the wall only.}$, $\text{because of collisions with the entire wall.}$... $\text{because of collisions with moving parts of the wall only.}$ Edit Delete
11139 $\text{Diatomic molecules like hydrogen have energies due to both translational as well as rotational motion. The equation in kinetic theory } \text{PV} = \frac{2}{3} \text{E}, \text{E is:}$ 1 112 Recommended Questions $\text{the total energy per unit volume.}$, $\text{only the translational part of energy because rotational energy is very small compared to translational energy.}$... $\text{only the translational part of the energy because during collisions with the wall, pressure relates to change in linear momentum.}$ Edit Delete
11138 $\text{Without change in temperature, a gas is forced in a smaller volume. Its pressure increases because its molecules:}$ 1 112 Recommended Questions $\text{strike the unit area of the container wall more often.}$, $\text{strike the unit area of the container wall at a higher speed.}$... $\text{strike the unit area of the container wall more often.}$ Edit Delete
11137 $\text{Heat is associated with:}$ 1 112 Recommended Questions $\text{kinetic energy of random motion of molecules.}$, $\text{kinetic energy of orderly motion of molecules.}$... $\text{kinetic energy of random motion of molecules.}$ Edit Delete
11136 $\text{If at a pressure of } 10^{6} \ \text{dyne/cm}^{2}\text{, one gram of nitrogen occupies } 2 \times 10^{4} \ \text{c.c. volume, then the average energy of a nitrogen molecule in erg is:}$ 1 112 Recommended Questions $\text{14} \times 10^{-13}$, $\text{10} \times 10^{-12}$... $\text{14} \times 10^{-13}$ Edit Delete
11135 $\text{Given below are two statements:}$ \\ \\ $\text{Assertion (A): If a gas container in motion is suddenly stopped, the temperature of the gas rises.}$ \\ $\text{Reason (R): The kinetic energy of ordered mechanical motion is converted into the kinetic energy of random motion of gas molecules.}$ 1 112 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$ Edit Delete
11134 $\text{The translatory kinetic energy of a gas per g is:}$ 1 112 Recommended Questions $\frac{3}{2}\frac{RT}{N}$, $\frac{3}{2}\frac{RT}{M}$... $\frac{3}{2}\frac{RT}{M}$ Edit Delete
11133 $\text{The translational kinetic energy of } n \text{ moles of a diatomic gas at absolute temperature } T \text{ is given by:}$ 1 112 Recommended Questions $\frac{5}{2}nRT$, $\frac{3}{2}nRT$... $\frac{3}{2}nRT$ Edit Delete
11132 $\text{An increase in the temperature of a gas-filled in a container would lead to:}$ 1 112 Recommended Questions $\text{decrease in the intermolecular distance.}$, $\text{increase in its mass.}$... $\text{increase in its kinetic energy.}$ Edit Delete
11131 $\text{A thermally insulated piston divides a container into two compartments. Volume, temperature, and pressure in the right compartment are } 2\text{V, T and } 2\text{P, while in the left compartment the respective values are V, T and P. If the piston can slide freely, then in the final equilibrium position, the volume of the right-hand compartment will be:}$ 1 112 Recommended Questions $\text{V}$, $\frac{3\text{V}}{5}$... $\frac{12\text{V}}{5}$ Edit Delete
11130 $\text{At constant temperature, on increasing the pressure of a gas by 5\%, its volume will decrease by:}$ 1 112 Recommended Questions $\text{5\%}$, $\text{5.26 \%}$... $\text{4.76 \%}$ Edit Delete
11129 $\text{Two chambers of different volumes, one containing }\text{m}_1\text{g of a gas at pressure }\text{P}_1\text{ and other containing }\text{m}_2\text{g of the same gas at pressure }\text{P}_2\text{ are joined to each other. If the temperature of the gas remains constant, the common pressure reached is:}$ 1 112 Recommended Questions $\frac{\text{m}_1\text{P}_1 + \text{m}_2\text{P}_2}{\text{m}_1 + \text{m}_2}$, $\frac{\text{m}_1\text{P}_2 + \text{m}_2\text{P}_1}{\text{m}_1 + \text{m}_2}$... $\frac{(\text{m}_1+\text{m}_2)\text{P}_1\text{P}_2}{\text{m}_1\text{P}_2 + \text{m}_2\text{P}_1}$ Edit Delete
11128 $\text{Two containers of equal volumes contain the same gas at pressures }\text{P}_1\text{ and }\text{P}_2\text{ and absolute temperatures }\text{T}_1\text{ and }\text{T}_2\text{, respectively. On joining the vessels, the gas reaches a common pressure }\text{P}\text{ and common temperature }\text{T}.\text{ The ratio }\frac{\text{P}}{\text{T}}\text{ is equal to:}$ 1 112 Recommended Questions $\frac{\text{P}_1}{\text{T}_1} + \frac{\text{P}_2}{\text{T}_2}$, $\frac{\text{P}_1\text{T}_1 + \text{P}_2\text{T}_2}{(\text{T}_1 + \text{T}_2)^{2}}$... $\frac{\text{P}_1}{2\text{T}_1} + \frac{\text{P}_2}{2\text{T}_2}$ Edit Delete
11127 $\text{How does the pressure of an ideal gas change during the process shown in the diagram?}$ 1 112 Recommended Questions $\text{pressure increases continuously.}$, $\text{pressure decreases continuously.}$... $\text{pressure increases continuously.}$ Edit Delete
11126 $\text{An ideal gas is initially at temperature } T \text{ and volume } V. \text{ Its volume increases by } \Delta V \text{ due to an increase in temperature } \Delta T, \text{ pressure remaining constant. The quantity } \delta = \frac{\Delta V}{(V \Delta T)} \text{ varies with temperature as:}$ 1 112 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... $\text{Graph 3}$ Edit Delete
11125 $\text{Two closed containers of equal volume are filled with air at pressure } P_0 \text{ and temperature } T_0. \text{ Both are connected by a narrow tube. If one of the containers is maintained at temperature } T_0 \text{ and the other at temperature } T, \text{ then new pressure in the container will be:}$ 1 112 Recommended Questions $\frac{2P_0 T}{T+T_0}$, $\frac{P_0 T}{T+T_0}$... $\frac{2P_0 T}{T+T_0}$ Edit Delete
11124 $\text{An experiment is carried out on a fixed amount of gas at different temperatures and at high pressure such that it deviates from the ideal gas behaviour. The variation of } \frac{PV}{RT} \text{ with } P \text{ is shown in the diagram. The correct variation will correspond to: (Assuming that the gas in consideration is nitrogen)}$ 1 112 Recommended Questions $\text{Curve A}$, $\text{Curve B}$... $\text{Curve B}$ Edit Delete
11123 $\text{Which one of the following graph is correct at constant pressure?}$ 1 112 Recommended Questions $\text{Graph 1}$, $\text{Graph 2}$... $\text{Graph 1}$ Edit Delete
11122 $\text{PV versus T graphs of equal masses of } \text{H}_2, \text{He} \text{ and } \text{O}_2 \text{ are shown in the figure. Choose the correct alternative:}$ 1 112 Recommended Questions $\text{A corresponds to } \text{H}_2, \text{ B to } \text{He} \text{ and C to } \text{O}_2$, $\text{A corresponds to } \text{He}, \text{ B to } \text{H}_2, \text{ and C to } \text{O}_2$... $\text{A corresponds to } \text{O}_2, \text{ B to } \text{He} \text{ and C to } \text{H}_2$ Edit Delete
11121 $\text{We have two vessels of equal volume, one filled with hydrogen and the other with equal mass of helium. The common temperature is } 27^{\circ} \text{C. What is the relative number of molecules in the two vessels?}$ 1 112 Recommended Questions $\frac{n_{H}}{n_{He}} = \frac{1}{1}$, $\frac{n_{H}}{n_{He}} = \frac{5}{1}$... $\frac{n_{H}}{n_{He}} = \frac{2}{1}$ Edit Delete
11120 $\text{When a large bubble rises from the bottom of a lake to the surface, its radius doubles. The atmospheric pressure is equal to that of a column of water of height } H \text{. The depth of the lake is:}$ 1 112 Recommended Questions $H$, $2H$... $7H$ Edit Delete
11119 $\text{The volume and temperature graph is given in the figure below. If pressures for the two processes are different, then which one, of the following, is true?}$ 1 112 Recommended Questions $P_1 = P_2 \text{ and } P_3 = P_4 \text{ and } P_3 > P_2$, $P_1 = P_2 \text{ and } P_3 = P_4 \text{ and } P_3 < P_2$... $P_1 = P_2 \text{ and } P_3 = P_4 \text{ and } P_3 < P_2$ Edit Delete
11118 $\text{At } 10^{\circ} \text{C the value of the density of a fixed mass of an ideal gas divided by its pressure is } x \text{. At } 110^{\circ} \text{C this ratio is:}$ 1 112 Recommended Questions $x$, $\frac{383}{283}x$... $\frac{283}{383}x$ Edit Delete
11117 $\text{Two thermally insulated vessels } 1 \text{ and } 2 \text{ are filled with air at temperatures } T_1, T_2 \text{, volume } V_1, V_2 \text{ and pressure } P_1, P_2 \text{ respectively. If the valve joining the two vessels is opened, the temperature inside the vessel at equilibrium will be:}$ 1 112 Recommended Questions $T_1 + T_2$, $\frac{T_1 + T_2}{2}$... $\frac{T_1 T_2 (P_1 V_1 + P_2 V_2)}{P_1 V_1 T_2 + P_2 V_2 T_1}$ Edit Delete
11116 $\text{How does the temperature change when the state of an ideal gas is changed according to the process shown in the figure?}$ 1 112 Recommended Questions $\text{temperature increases continuously.}$, $\text{temperature decreases continuously.}$... $\text{temperature first increases and then decreases.}$ Edit Delete
11115 $\text{Which one, of the following, graphs represents the behaviour of an ideal gas at constant temperature?}$ 1 112 Recommended Questions $\text{Graph representing a linear increase of } \text{PV} \text{ with } \text{V}.$ , $\text{Graph representing a constant value of } \text{PV} \text{ with } \text{V}.$ ... $\text{Graph representing a constant value of } \text{PV} \text{ with } \text{V}.$ Edit Delete
11114 $\text{Volume, pressure, and temperature of an ideal gas are } V, P, \text{ and } T \text{ respectively. If the mass of its molecule is } m, \text{ then its density is: } [k = \text{Boltzmann's constant}]$ 1 112 Recommended Questions $mkT$, $\frac{P}{kT}$... $\frac{Pm}{kT}$ Edit Delete
11113 $\text{During an experiment, an ideal gas is found to obey an additional law } \text{VP}^2 = \text{constant. The gas is initially at temperature } \text{T} \text{ and volume } \text{V} \text{. What will be the temperature of the gas when it expands to a volume } 2\text{V}?$ 1 112 Recommended Questions $\text{T}' = \sqrt{4}\text{T}$, $\text{T}' = \sqrt{2}\text{T}$... $\text{T}' = \sqrt{2}\text{T}$ Edit Delete
11112 $\text{The equation of state for } 5\text{g of oxygen at a pressure } \text{P} \text{ and temperature } \text{T}, \text{ when occupying a volume } \text{V}, \text{ will be: (where } \text{R} \text{ is the gas constant)}$ 1 112 Recommended Questions $\text{PV} = 5\text{RT}$, $\text{PV} = \frac{5}{2}\text{RT}$... $\text{PV} = \frac{5}{32}\text{RT}$ Edit Delete
11111 $\text{The volume } V \text{ versus temperature } T \text{ graph for a certain amount of a perfect gas at two pressures } P_1 \text{ and } P_2 \text{ are shown in the figure. Here:}$ 1 112 Recommended Questions $P_1 < P_2$, $P_1 > P_2$... $P_1 > P_2$ Edit Delete
11110 $\text{The figure below shows the graph of pressure and volume of a gas at two temperatures } T_1 \text{ and } T_2 \text{. Which one, of the following, inferences is correct?}$ 1 112 Recommended Questions $T_1 > T_2$, $T_1 = T_2$... $T_1 < T_2$ Edit Delete
11109 $\text{An isolated system-}$ 1 112 Recommended Questions $\text{is a specified region where transfer of energy and mass takes place}$, $\text{is a region of constant mass and only energy is allowed through the closed boundaries}$... $\text{cannot transfer neither energy nor mass to or from the surroundings.}$ Edit Delete
11108 $\text{Two vessels separately contain two ideal gases } A \text{ and } B \text{ at the same temperature, the pressure of } A \text{ being twice that of } B \text{. Under such conditions, the density of } A \text{ is found to be 1.5 times the density of } B \text{. The ratio of molecular weight of } A \text{ and } B \text{ is:}$ 1 112 Recommended Questions $\frac{2}{3}$, $\frac{3}{4}$... $\frac{3}{4}$ Edit Delete
11107 $\text{What is the graph between volume and temperature in Charle's law?}$ 1 112 Recommended Questions $\text{An ellipse}$, $\text{A circle}$... $\text{A straight line}$ Edit Delete
11106 120 1 111 Recommended Questions N/A N/A Edit Delete
11105 $\text{A heat engine is working between 200 K and 400 K. The efficiency of the heat engine may be:}$ 1 111 Recommended Questions $20\%$, $40\%$... $\text{All of these}$ Edit Delete
11104 The efficiency of a Carnot engine is 40% when it receives energy at 500 K. At what temperature it should receive energy to increase its efficiency by 25%? 1 111 Recommended Questions $600 \text{ K}$, $700 \text{ K}$... $600 \text{ K}$ Edit Delete
11103 $\text{If the temperature of the source and the sink in the heat engine is at 1000 K \& 500 K respectively, then the efficiency can be:}$ 1 111 Recommended Questions $20\%$, $30\%$... $\text{All of these}$ Edit Delete
11102 $\text{Two Carnot engines x and y are working between the same source temperature } T_1 \text{ and the same sink temperature } T_2\text{. If the temperature of the source in Carnot engine x is increased by } \Delta T\text{, and in the Carnot engine y, the temperature of the sink is increased by } \Delta T\text{, then the efficiency of x and y becomes } \eta_x \text{ and } \eta_y\text{. Then:}$ 1 111 Recommended Questions $\eta_x = \eta_y$, $\eta_x < \eta_y$... $\eta_x > \eta_y$ Edit Delete
11101 $\text{A reversible engine converts one-sixth of the heat input into work. When the temperature of the sink is reduced by 62°C, the efficiency of the engine is doubled. The temperatures of the source and sink are:}$ 1 111 Recommended Questions $80°\text{C}, 37°\text{C}$, $95°\text{C}, 28°\text{C}$... $99°\text{C}, 37°\text{C}$ Edit Delete
11100 When the sink temperature is kept at 400 K, the efficiency of a Carnot engine is 50%. While keeping the source temperature constant, by how much should we reduce the sink temperature to increase the efficiency to 60%? 1 111 Recommended Questions $80 \text{ K}$, $70 \text{ K}$... $80 \text{ K}$ Edit Delete
11099 $\text{A Carnot engine whose sink is at 300 K has an efficiency of 40\%. By how much should the temperature of the source be increased to increase its efficiency by 50\% of its original efficiency?}$ 1 111 Recommended Questions $275 \text{ K}$, $325 \text{ K}$... $250 \text{ K}$ Edit Delete
11098 $\text{An ideal gas heat engine operates in a Carnot cycle between 227°C and 127°C. It absorbs } 6 \times 10^4 \text{ cals of heat at higher temperatures. The amount of heat converted to work will be?}$ 1 111 Recommended Questions $4.8 \times 10^4 \text{ cals}$, $2.4 \times 10^4 \text{ cals}$... $1.2 \times 10^4 \text{ cals}$ Edit Delete
11097 $\text{Two Carnot engines A and B are operated in succession. The first one, A receives heat from a source at } T_1 = 800 \text{ K and rejects to sink at } T_2 \text{ K. The second engine, B, receives heat rejected by the first engine and rejects to another sink at } T_3 = 300 \text{ K. If the work outputs of the two engines are equal, then the value of } T_2 \text{ will be:}$ 1 111 Recommended Questions $100 \text{ K}$, $300 \text{ K}$... $550 \text{ K}$ Edit Delete
11096 $\text{In a Carnot engine, when } T_2 = 0°\text{C and } T_1 = 200°\text{C, its efficiency is } \eta_1 \text{ and when } T_1 = 0°\text{C and } T_2 = -200°\text{C, its efficiency is } \eta_2\text{. What is the value of } \frac{\eta_1}{\eta_2}\text{?}$ 1 111 Recommended Questions $0.577$, $0.733$... $0.577$ Edit Delete
11095 $\text{The efficiency of an ideal heat engine (Carnot heat engine) working between the freezing point and boiling point of water is:}$ 1 111 Recommended Questions $26.8\%$, $20\%$... $26.8\%$ Edit Delete
11094 $\text{The efficiency of a Carnot heat engine working between the temperatures } 27°\text{C and } 227°\text{C is:}$ 1 111 Recommended Questions $0.1$, $0.6$... $0.4$ Edit Delete
11093 $\text{A heat engine operates between the temperatures of 300 K and 500 K. If it extracts 1200 J of heat energy from the source, then the maximum amount of work that can be done by the engine is:}$ 1 111 Recommended Questions $720 \text{ J}$, $520 \text{ J}$... $480 \text{ J}$ Edit Delete
11092 The efficiency of an ideal heat engine is less than 100% because of: 1 111 Recommended Questions $\text{the presence of friction.}$, $\text{the leakage of heat energy.}$... $\text{all of these.}$ Edit Delete
11091 $\text{An ideal heat engine (Carnot engine) works between temperatures } T_1 \text{ and } T_2 \text{ has an efficiency } \eta\text{. The new efficiency if both the source and sink temperatures are doubled will be:}$ 1 111 Recommended Questions $\frac{\eta}{2}$, $\eta$... $\eta$ Edit Delete
11090 $\text{Given below are two statements:}$Statement I: The efficiency of any thermodynamic engine can approach 100% if friction and all dissipative processes are reduced.}Statement II: The first law of thermodynamics is applicable only to non-living systems. 1 111 Recommended Questions $\text{Statement I is incorrect and Statement II is correct.}$, $\text{Both Statement I and Statement II are correct.}$... $\text{Both Statement I and Statement II are incorrect.}$ Edit Delete
11089 $\text{Consider a cycle followed by an engine (figure).}$ $\text{1 to 2 is isothermal,}$ $\text{2 to 3 is adiabatic,}$ $\text{3 to 1 is adiabatic.}$ $\text{Such a process does not exist, because:}$ 1 111 Recommended Questions $\text{(a), (b)}$, $\text{(a), (c)}$... $\text{(a), (c)}$ Edit Delete
11088 $\text{A sink, that is, the system where heat is rejected, is essential for the conversion of heat into work. From which law does the above inference follow?}$ 1 111 Recommended Questions $\text{Zeroth}$, $\text{First}$... $\text{Second}$ Edit Delete
11087 $\text{Given below are two statements:}$ $\text{Assertion (A): Reversible systems are difficult to find in the real world.}$ $\text{Reason (R): Most processes are dissipative in nature.}$ 1 111 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$ Edit Delete
11086 $\text{The cyclic process of 2 moles of diatomic gas is shown in the figure. Which of the following statements is correct?}$ 1 111 Recommended Questions $\text{The process } BC \text{ is an isothermal compression.}$, $\text{The work done in the process } CA \text{ is } 4RT_0$... $\text{The work done in the process } AB \text{ is zero.}$ Edit Delete
11085 $\text{The Carnot cycle (reversible) of gas is represented by a pressure-volume curve}$ $\text{as shown in the figure. Consider the following statements:}$ $\text{I. The area } ABCD = \text{The work done on the gas}$ $\text{II. The area } ABCD = \text{The net heat absorbed}$ $\text{III. The change in the internal energy in the cycle } = 0$ $\text{Which of the statement(s) given above is/are correct?}$ 1 111 Recommended Questions $\text{I only}$, $\text{II only}$... $\text{II and III}$ Edit Delete
11084 $\text{A cyclic process for 1 mole of an ideal gas is shown in the } V-T \text{ diagram. The work done in } AB, BC \text{ and } CA \text{ respectively is:}$ 1 111 Recommended Questions $0, RT_2 \ln \left(\frac{V_1}{V_2}\right), R(T_1 - T_2)$, $R(T_1 - T_2), 0, RT_1 \ln \frac{V_1}{V_2}$... $0, RT_2 \ln \left(\frac{V_2}{V_1}\right), R(T_1 - T_2)$ Edit Delete
11083 $\text{If in the thermodynamic process shown in the figure, the work done by the}$ $\text{system along } A \rightarrow B \rightarrow C \text{ is 50 J and the change in internal energy during } C$ $\rightarrow A \text{ is 30 J, then the heat supplied during } A \rightarrow B \rightarrow C \text{ is:}$ 1 111 Recommended Questions $50 \text{ J}$, $20 \text{ J}$... $20 \text{ J}$ Edit Delete
11082 $\text{In a cyclic process, the internal energy of the gas:}$ 1 111 Recommended Questions $\text{increases}$, $\text{decreases}$... $\text{remains constant}$ Edit Delete
11081 $\text{In the } (P-V) \text{ diagram shown, the gas does 5 J of work in the isothermal process } ab \text{ and 4 J in the adiabatic process } bc\text{. What will be the change in internal energy of the gas in the straight path from } c \text{ to } a\text{?}$ 1 111 Recommended Questions $9 \text{ J}$, $1 \text{ J}$... $4 \text{ J}$ Edit Delete
11080 $\text{For the indicator diagram given below, which of the following is not correct?}$ 1 111 Recommended Questions $\text{Cycle II is a heat engine cycle.}$, $\text{Net work is done on the gas in cycle I.}$... $\text{Work done is positive for cycle I.}$ Edit Delete
11079 $\text{An ideal gas is taken through the cycle } A \rightarrow B \rightarrow C \rightarrow A \text{ as shown in the figure below. If the net heat supplied to the gas is 10 J, then the work done by the gas in the process } B \rightarrow C \text{ is:}$ 1 111 Recommended Questions $-10 \text{ J}$, $-30 \text{ J}$... $-10 \text{ J}$ Edit Delete
11078 $\text{Which one of the following is correct for one complete cycle of a thermodynamic process on a gas as shown in the } (P - V) \text{ diagram?}$ 1 111 Recommended Questions $\Delta E_{\text{int}} = 0, Q < 0$, $\Delta E_{\text{int}} = 0, Q > 0$... $\Delta E_{\text{int}} = 0, Q < 0$ Edit Delete
11077 91 1 111 Recommended Questions 1, 2... 4 Edit Delete
11076 $ABCA \text{ is a cyclic process. Its } P\text{-}V \text{ graph would be:}$ 1 111 Recommended Questions $\text{P-V diagram showing triangular cycle with horizontal line from B to A, curved line from A to C, and dotted line from C to B}$, $\text{P-V diagram showing triangular cycle with diagonal line from B to A, vertical line from A to C, and horizontal line from C to B}$... $\text{P-V diagram showing cycle with horizontal line from B to A, curved line from A to C, and hyperbolic curve from C to B}$ Edit Delete
11075 $\text{A gas is taken through the cycle } A \rightarrow B \rightarrow C \rightarrow A\text{, as shown in the figure. What is the total amount of work done by the gas?}$ 1 111 Recommended Questions $1000 \text{ J}$, $\text{zero}$... $1000 \text{ J}$ Edit Delete
11074 $\text{A thermodynamic system undergoes a cyclic process } ABCDA \text{ as shown in Fig. The work done by the system in the cycle is:}$ 1 111 Recommended Questions $P_0V_0$, $2P_0V_0$... $\text{zero}$ Edit Delete
11073 $\text{An ideal gas undergoes a cyclic process ABCA as shown. The heat exchange between the system and the surrounding during the process will be:}$ 1 111 Recommended Questions $10 \text{ J}$, $5 \text{ J}$... $5 \text{ J}$ Edit Delete
11072 $\text{Given below are two statements:}$ $\text{Assertion (A): It is possible that the temperature of a gas may fall even as it is being heated.}$ $\text{Reason (R): The specific heat capacity of a gas changes from process to process.}$ 1 111 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$ Edit Delete
11071 $\text{An insulator container contains 4 moles of an ideal diatomic gas at a temperature T. If heat Q is supplied to this gas, due to which 2 moles of the gas are dissociated into atoms, but the temperature of the gas remains constant, then:}$ 1 111 Recommended Questions $Q = 2RT$, $Q = RT$... $Q = RT$ Edit Delete
11070 $\text{An ideal gas is taken through the process as shown in the figure. Then:}$ 1 111 Recommended Questions $\text{In the process AB, the work done by the system is positive.}$, $\text{In process AB, heat is rejected out of the system.}$... $\text{In process AB, heat is rejected out of the system.}$ Edit Delete
11069 $\text{A horizontal cylinder has two sections of unequal cross-sections in which two pistons, A and B, can move freely. The pistons are joined by a string. Some gas is trapped between the pistons. If this gas is heated, the pistons will:}$ 1 111 Recommended Questions $\text{move to the left.}$, $\text{move to the right.}$... $\text{move to the right.}$ Edit Delete
11068 $\text{In a given process, } dW = 0, dQ < 0, \text{ then for the gas:}$ 1 111 Recommended Questions $\text{Temperature increases}$, $\text{Volume decreases}$... $\text{Pressure decreases}$ Edit Delete
11067 $\text{The internal energy of an ideal gas increases in:}$ 1 111 Recommended Questions $\text{Adiabatic expansion}$, $\text{Adiabatic compression}$... $\text{Adiabatic compression}$ Edit Delete
11066 $\text{An ideal gas is enclosed in an insulated cylinder. The piston is frictionless and attached to an ideal spring. When the gas is heated, then:}$ 1 111 Recommended Questions $\text{the work is done against the spring only.}$, $\text{the work is done against the atmospheric pressure only.}$... $\text{the internal energy of gas increases.}$ Edit Delete
11065 $\text{In the case of free expansion, when a sample of gas expands suddenly, the change in internal energy of the gas will be:}$ 1 111 Recommended Questions $\text{Positive}$, $\text{Negative}$... $\text{Zero}$ Edit Delete
11064 $\text{The degree of freedom per molecule for a gas on average is 8. If the gas performs 100 J of work when it expands under constant pressure, then the amount of heat absorbed by the gas is:}$ 1 111 Recommended Questions $\text{500 J}$, $\text{600 J}$... $\text{500 J}$ Edit Delete
11063 $\text{If } \Delta Q \text{ and } \Delta W \text{ represent the heat supplied to the system and the work done on the system, respectively, then the first law of thermodynamics can be written as: (where } \Delta U \text{ is the internal energy)}$ 1 111 Recommended Questions $\Delta Q = \Delta U + \Delta W$, $\Delta Q = \Delta U - \Delta W$... $\Delta Q = \Delta U - \Delta W$ Edit Delete
11062 $\text{A unit mass of a liquid with volume } V_1 \text{ is completely changed into a gas of volume } V_2 \text{ at a constant external pressure } P \text{ and temperature } T\text{. If the latent heat of evaporation for the given mass is } L\text{, then the increase in the internal energy of the system is:}$ 1 111 Recommended Questions $\text{Zero}$, $P(V_2 - V_1)$... $L - P(V_2 - V_1)$ Edit Delete
11061 $\text{Find out the total heat given to diatomic gas in the process } A \rightarrow B \rightarrow C\text{:}$ $(B \rightarrow C \text{ is isothermal})$ $\text{Given the P-V diagram with points: A}(V_0, P_0)\text{, B}(V_0, 2P_0)\text{, C}(2V_0, P_0)$ 1 111 Recommended Questions $P_0 V_0 + 2P_0 V_0 \ln 2$, $\frac{1}{2} P_0 V_0 + 2P_0 V_0 \ln 2$... $\frac{5}{2} P_0 V_0 + 2P_0 V_0 \ln 2$ Edit Delete
11060 $\text{The figure below shows two paths that may be taken by a gas to go from state A to state C. In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the process AC will be:}$ $\text{Given P-V diagram with coordinates: A}(2 \times 10^{-3} \text{ m}^3, 2 \times 10^4 \text{ Pa})\text{, B}(2 \times 10^{-3} \text{ m}^3, 6 \times 10^4 \text{ Pa})\text{, C}(4 \times 10^{-3} \text{ m}^3, 6 \times 10^4 \text{ Pa})$ 1 111 Recommended Questions $380 \text{ J}$, $500 \text{ J}$... $460 \text{ J}$ Edit Delete
11059 $\text{In an adiabatic expansion of a gas, if the initial and final temperatures are } T_1 \text{ and } T_2\text{, respectively, then the change in internal energy of the gas is:}$ 1 111 Recommended Questions $\frac{nR}{\gamma-1} (T_2 - T_1)$, $\frac{nR}{\gamma-1} (T_1 - T_2)$... $\frac{nR}{\gamma-1} (T_2 - T_1)$ Edit Delete
11058 $\text{A sample of 0.1 g of water at 100°C and normal pressure (1.013} \times 10^5 \text{ N m}^{-2}\text{) requires 54 cal of heat energy to convert it into steam at 100°C. If the volume of the steam produced is 167.1 cc, then the change in internal energy of the sample will be:}$ 1 111 Recommended Questions $104.3 \text{ J}$, $208.7 \text{ J}$... $208.7 \text{ J}$ Edit Delete
11057 $\text{Heat is supplied to a diatomic gas in an isochoric process. The ratio } \Delta Q : \Delta U \text{ is: (symbols have usual meanings)}$ 1 111 Recommended Questions $5 : 3$, $5 : 2$... $1 : 1$ Edit Delete
11056 $\text{If a gas undergoes the change in its thermodynamic state from A to B via two different paths, as shown in the given pressure (P) versus volume (V) graph, then:}$ 1 111 Recommended Questions $\text{the temperature of the gas decreases in path 1 from A to B.}$, $\text{the heat absorbed by the gas in path 1 is greater than in path 2.}$... $\text{the heat absorbed by the gas in path 1 is greater than in path 2.}$ Edit Delete
11055 $\text{The work done by an ideal diatomic gas in its sudden expansion is 20 J. The change in the internal energy of the gas will be:}$ 1 111 Recommended Questions $20 \text{ J}$, $0 \text{ J}$... $-20 \text{ J}$ Edit Delete
11054 $\text{1 kg of gas does 20 kJ of work and receives 16 kJ of heat when it is expanded between two states. The second kind of expansion can be found between the same initial and final states, which requires a heat input of 9 kJ. The work done by the gas in the second expansion will be:}$ 1 111 Recommended Questions $32 \text{ kJ}$, $5 \text{ kJ}$... $13 \text{ kJ}$ Edit Delete
11053 $\text{An ideal monoatomic gas } \left(\gamma = \frac{5}{3}\right) \text{ absorbs 50 cal in an isochoric process. The increase in internal energy of the gas is:}$ 1 111 Recommended Questions $20 \text{ cal}$, $\text{Zero}$... $50 \text{ cal}$ Edit Delete
11052 $\text{An ideal gas goes from state A to state B via three different processes, as indicated in the } P\text{-}V \text{ diagram. If } Q_1, Q_2, Q_3 \text{ indicates the heat absorbed by the gas along the three processes and } \Delta U_1, \Delta U_2, \Delta U_3 \text{ indicates the change in internal energy along the three processes respectively, then:}$ 1 111 Recommended Questions $Q_1 > Q_2 > Q_3 \text{ and } \Delta U_1 = \Delta U_2 = \Delta U_3$, $Q_3 > Q_2 > Q_1 \text{ and } \Delta U_1 = \Delta U_2 = \Delta U_3$... $Q_1 > Q_2 > Q_3 \text{ and } \Delta U_1 = \Delta U_2 = \Delta U_3$ Edit Delete
11051 $\text{A system is taken from state } A \text{ to state } B \text{ along two different paths, 1 and 2. If the heat absorbed and work done by the system along these two paths are } Q_1, Q_2 \text{ and } W_1, W_2 \text{ respectively, then:}$ 1 111 Recommended Questions $Q_1 = Q_2$, $W_1 = W_2$... $Q_1 - W_1 = Q_2 - W_2$ Edit Delete
11050 $\text{We consider a thermodynamic system. If } \Delta U \text{ represents the increase in its internal energy and } W \text{ the work done by the system, which of the following statements is true?}$ 1 111 Recommended Questions $\Delta U = -W \text{ in an isothermal process.}$, $\Delta U = W \text{ in an isothermal process.}$... $\Delta U = -W \text{ in an adiabatic process.}$ Edit Delete
11049 $\text{When a system is moved from state } a \text{ to state } b \text{ along the path } acb, \text{ it is discovered that the system absorbs 200 J of heat and performs 80 J of work. Along the path } adb, \text{ heat absorbed } Q = 144 \text{ J. The work done along the path } adb \text{ is:}$ 1 111 Recommended Questions $6 \text{ J}$, $12 \text{ J}$... $24 \text{ J}$ Edit Delete
11048 $\text{The latent heat of vaporisation of water is 2240 J/gm. If the work done in the process of expansion of 1 g is 168 J, then the increase in internal energy is:}$ 1 111 Recommended Questions $2408 \text{ J}$, $2240 \text{ J}$... $2072 \text{ J}$ Edit Delete
11047 $\text{Two cylinders, } A \text{ and } B\text{, of equal capacity are connected to each other via a stopcock. } A \text{ contains gas at a standard temperature and pressure } B \text{ is completely evacuated. The entire system is thermally insulated. If the stopcock is suddenly opened, then the change in internal energy of the gas is:}$ 1 111 Recommended Questions $0$, $5 \text{ J}$... $0$ Edit Delete
11046 $\text{The first law of thermodynamics is based on:}$ 1 111 Recommended Questions $\text{the concept of temperature.}$, $\text{the concept of conservation of energy.}$... $\text{the concept of conservation of energy.}$ Edit Delete
11045 $\text{Under isothermal conditions, the volumes of ideal gas } A \text{ and actual gas } B \text{ grow from } V \text{ to } 2V\text{. The increase in internal energy:}$ 1 111 Recommended Questions $\text{will be the same in both } A \text{ and } B\text{.}$, $\text{will be zero in both the gases.}$... $\text{of } B \text{ will be more than that of } A\text{.}$ Edit Delete
11044 $\text{Which of the following is true for the molar heat capacity of an ideal gas?}$ 1 111 Recommended Questions $\text{It cannot be negative.}$, $\text{It has only two values } (C_P \text{ and } C_V)\text{.}$... $\text{It can have any value.}$ Edit Delete
11043 $\text{The molar heat capacity in the case of a diatomic gas if it does work of } \frac{Q}{4} \text{ when heat } Q \text{ is supplied to it is:}$ 1 111 Recommended Questions $\frac{2}{5}R$, $\frac{5}{2}R$... $\frac{10}{3}R$ Edit Delete
11042 $\text{The variation of molar heat capacity at constant volume } C_V \text{ with temperature T for a monatomic gas is:}$ 1 111 Recommended Questions $\text{Graph showing } C_V \text{ increasing with T in a curved upward manner}$, $\text{Graph showing } C_V \text{ increasing with T in a curved upward manner (steeper)}$... $\text{Graph showing } C_V \text{ constant with respect to T (horizontal line)}$ Edit Delete
11041 $\text{Two cylinders contain the same amount of an ideal monatomic gas. The same amount of heat is given to two cylinders. If the temperature rise in cylinder A is } T_0\text{, then the temperature rise in cylinder B will be:}$ $\text{(Cylinder A has a free piston, Cylinder B has a fixed piston)}$ 1 111 Recommended Questions $\frac{4}{3}T_0$, $2T_0$... $\frac{5}{3}T_0$ Edit Delete
11040 $\text{A monatomic gas is supplied with the heat } Q \text{ very slowly, keeping the pressure constant. The work done by the gas will be:}$ 1 111 Recommended Questions $\frac{2}{3}Q$, $\frac{3}{5}Q$... $\frac{2}{5}Q$ Edit Delete
11039 $\text{During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of } C_P/C_V \text{ for the gas is equal to:}$ 1 111 Recommended Questions $\frac{4}{3}$, $2$... $\frac{3}{2}$ Edit Delete
11038 $\text{The volume (V) of a monatomic gas varies with its temperature (T), as shown in the graph. The ratio of work done by the gas to the heat absorbed by it when it undergoes a change from state A to state B will be:}$ 1 111 Recommended Questions $\frac{2}{5}$, $\frac{2}{3}$... $\frac{2}{5}$ Edit Delete
11037 $\text{The specific heat of a gas in an isothermal process is:}$ 1 111 Recommended Questions $\text{Infinite}$, $\text{Zero}$... $\text{Infinite}$ Edit Delete
11036 $\text{If 32 gm of } \text{O}_2 \text{ at } 27°\text{C is mixed with 64 gm of } \text{O}_2 \text{ at } 327°\text{C in an adiabatic vessel, then the final temperature of the mixture will be:}$ 1 111 Recommended Questions $200°\text{C}$, $227°\text{C}$... $227°\text{C}$ Edit Delete
11035 $\text{The pressure in a monoatomic gas increases linearly from 4 atm to 8 atm when its volume increases from 0.2 m}^3 \text{ to 0.5 m}^3\text{. The increase in internal energy will be:}$ 1 111 Recommended Questions $480 \text{ kJ}$, $550 \text{ kJ}$... $480 \text{ kJ}$ Edit Delete
11034 $\text{When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is:}$ 1 111 Recommended Questions $\frac{2}{5}$, $\frac{3}{5}$... $\frac{5}{7}$ Edit Delete
11033 $\text{If the ratio of specific heat of a gas at constant pressure to that at constant volume is } \gamma\text{, the change in internal energy of a mass of gas, when the volume changes from V to 2V at constant pressure, P is:}$ 1 111 Recommended Questions $\frac{R}{(\gamma - 1)}$, $PV$... $\frac{PV}{(\gamma - 1)}$ Edit Delete
11032 $\text{If 3 moles of a monoatomic gas do 150 J of work when it expands isobarically, then a change in its internal energy will be:}$ 1 111 Recommended Questions $100 \text{ J}$, $225 \text{ J}$... $225 \text{ J}$ Edit Delete
11031 $\text{In the } P-V \text{ graph shown for an ideal diatomic gas, the change in the internal energy is:}$ 1 111 Recommended Questions $\frac{3}{2} P(V_2 - V_1)$, $\frac{5}{2} P(V_2 - V_1)$... $\frac{5}{2} P(V_2 - V_1)$ Edit Delete
11030 $\text{If } n \text{ moles of an ideal gas is heated at a constant pressure from } 50°\text{C to } 100°\text{C, the increase in the internal energy of the gas will be:}$ $\left(\frac{C_p}{C_v} = \gamma \text{ and } R = \text{gas constant}\right)$ 1 111 Recommended Questions $\frac{50nR}{\gamma - 1}$, $\frac{100nR}{\gamma - 1}$... $\frac{50nR}{\gamma - 1}$ Edit Delete
11029 $\text{The incorrect relation is:}$ $\text{(where symbols have their usual meanings)}$ 1 111 Recommended Questions $C_P = \frac{\gamma R}{\gamma - 1}$, $C_P - C_V = R$... $\Delta U = \frac{P_f V_f - P_i V_i}{1 - \gamma}$ Edit Delete
11028 $\text{If a gas changes volume from 2 litres to 10 litres at a constant temperature of 300 K, then the change in its internal energy will be:}$ 1 111 Recommended Questions $12 \text{ J}$, $24 \text{ J}$... $0 \text{ J}$ Edit Delete
11027 $\text{The ratio of molar specific heat capacity at constant pressure } (C_p) \text{ to that at constant volume } (C_v) \text{ varies with temperature } (T) \text{ as: (assume temperature is low)}$ 1 111 Recommended Questions $T^0$, $T^{\frac{1}{2}}$... $T^0$ Edit Delete
11026 $\text{An ideal gas goes from } A \text{ to } B \text{ via two processes, I and II, as shown. If } \Delta U_1 \text{ and } \Delta U_2 \text{ are the changes in internal energies in processes I and II, respectively, } (P : \text{pressure}, V : \text{volume}) \text{ then:}$ 1 111 Recommended Questions $\Delta U_1 > \Delta U_2$, $\Delta U_1 < \Delta U_2$... $\Delta U_1 = \Delta U_2$ Edit Delete
11025 $\text{The work done for the given process } AB \text{ is:}$ 1 111 Recommended Questions $6P_0V_0$, $5P_0V_0$... $6P_0V_0$ Edit Delete
11024 $\text{The PV diagram of an ideal gas is shown in the figure. The work done by the gas in the process } 1 \rightarrow 2 \rightarrow 3 \rightarrow 4 \text{ is given by:}$ 1 111 Recommended Questions $\frac{9}{2} P_0V_0$, $\frac{15}{2} P_0V_0$... $\frac{9}{2} P_0V_0$ Edit Delete
11023 $\text{An ideal gas is taken from point A to point B, as shown in the } P\text{-}V \text{ diagram. The work done in the process is:}$ 1 111 Recommended Questions $(P_A - P_B)(V_B - V_A)$, $\frac{1}{2}(P_B - P_A)(V_B + V_A)$... $\frac{1}{2}(P_B + P_A)(V_B - V_A)$ Edit Delete
11022 $\text{One mole of an ideal gas at an initial temperature of } T K \text{ does } 6R \text{ joules of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is } \frac{5}{3}, \text{ the final temperature of the gas will be:}$ 1 111 Recommended Questions $(T + 2.4)K$, $(T - 2.4)K$... $(T - 4)K$ Edit Delete
11021 $\text{In an adiabatic process, the graph for work done versus change of temperature } \Delta T \text{ will be:}$ 1 111 Recommended Questions $\text{A hyperbolic curve with } W \text{ decreasing as } \Delta T \text{ increases}$, $\text{A horizontal line showing } W \text{ is independent of } \Delta T$... $\text{A straight line passing through origin with positive slope}$ Edit Delete
11020 $\text{The pressure of a monoatomic gas increases linearly from } 4 \times 10^5 \text{ N/m}^2 \text{ to } 8 \times 10^5 \text{ N/m}^2 \text{ when its volume increases from } 0.2 \text{ m}^3 \text{ to } 0.5 \text{ m}^3. \text{ The work done by the gas is:}$ 1 111 Recommended Questions $2.8 \times 10^5 \text{ J}$, $1.8 \times 10^6 \text{ J}$... $1.8 \times 10^5 \text{ J}$ Edit Delete
11019 $\text{In an adiabatic process, the graph for work done versus change of temperature } \Delta T \text{ will be:}$ 1 111 Recommended Questions $\text{A hyperbolic curve with } W \text{ decreasing as } \Delta T \text{ increases}$, $\text{A horizontal line showing } W \text{ is independent of } \Delta T$... $\text{A straight line passing through origin with positive slope}$ Edit Delete
11018 $\text{Two identical samples of a gas are allowed to expand, (i) isothermally and (ii) adiabatically. The work done will be:}$ 1 111 Recommended Questions $\text{more in the isothermal process.}$, $\text{more in the adiabatic process.}$... $\text{more in the isothermal process.}$ Edit Delete
11017 $\text{An ideal gas is compressed to half its initial volume by means of several processes. Which of the following processes results in the maximum work being done on the gas?}$ 1 111 Recommended Questions $\text{Adiabatic}$, $\text{Isobaric}$... $\text{Adiabatic}$ Edit Delete
11016 $\text{One mole of an ideal gas expands at a constant temperature of 300 K from an initial volume of 10 litres to a final volume of 20 litres. The work done in expanding the gas is equal to:}$ $(R = 8.31 \text{ J/mol-K})$ 1 111 Recommended Questions $750 \text{ J}$, $1728 \text{ J}$... $1728 \text{ J}$ Edit Delete
11015 $\text{The pressure-temperature } (P-T) \text{ graph for two processes, } A \text{ and } B\text{, in a system is shown in the figure. If } W_1 \text{ and } W_2 \text{ are work done by the gas in process } A \text{ and } B \text{ respectively, then:}$ 1 111 Recommended Questions $W_1 = W_2$, $W_1 < W_2$... $W_1 > W_2$ Edit Delete
11014 $\text{A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then:}$ 1 111 Recommended Questions $\text{compressing the gas through an adiabatic process will require more work to be done.}$, $\text{compressing the gas isothermally or adiabatically will require the same amount of work to be done.}$... $\text{compressing the gas through an adiabatic process will require more work to be done.}$ Edit Delete
11013 $\text{A given mass of gas expands from state } A \text{ to state } B \text{ by three paths 1, 2 and 3, as shown in the figure. If } W_1, W_2 \text{ and } W_3 \text{ respectively be the work done by the gas along the three paths, then:}$ 1 111 Recommended Questions $W_1 > W_2 > W_3$, $W_1 < W_2 < W_3$... $W_1 < W_2 < W_3$ Edit Delete
11012 $\text{Work done during the given cycle is:}$ 1 111 Recommended Questions $4P_0V_0$, $2P_0V_0$... $P_0V_0$ Edit Delete
11011 $\text{The figure shows the } (P-V) \text{ diagram of an ideal gas undergoing a change of state from } A \text{ to } B\text{. Four different paths I, II, III and IV, as shown in the figure, may lead to the same change of state.}$ $\text{Which of the following options contains only correct statements?}$ $\text{(a) The change in internal energy is the same in cases IV and III but not in cases I and II.}$ $\text{(b) The change in internal energy is the same in all four cases.}$ $\text{(c) The work done is maximum in case I.}$ $\text{(d) The work done is minimum in case II.}$ 1 111 Recommended Questions $\text{(b), (c) and (d) only}$, $\text{(a) and (d) only}$... $\text{(b) and (c) only}$ Edit Delete
11010 $\text{A closed hollow insulated cylinder is filled with gas at } 0^{\circ}\text{C and also contains an insulated piston of negligible weight and negligible thickness at the middle point. The gas on one side of the piston is heated to } 100^{\circ}\text{C. If the piston moves } 5\text{ cm, the length of the hollow cylinder will be:}$ 1 111 Recommended Questions $13.65 \text{ cm}$, $27.3 \text{ cm}$... $64.6 \text{ cm}$ Edit Delete
11009 $\text{A pressure } (P) \text{ versus volume } (V) \text{ graph is obtained for an ideal gas from state } A \text{ to state } B \text{ (as shown in the figure below). Which of the following is the correct statement?}$ 1 111 Recommended Questions $\text{The temperature of gas increases continuously.}$, $\text{The temperature of gas decreases continuously.}$... $\text{The temperature first increases, then decreases.}$ Edit Delete
11008 $\text{The volume of air (diatomic) increases by } 5\% \text{ in its adiabatical expansion. The percentage decrease in its pressure will be:}$ 1 111 Recommended Questions $5\%$, $6\%$... $7\%$ Edit Delete
11007 $\text{In isothermal expansion, the pressure is determined by:}$ 1 111 Recommended Questions $\text{Temperature only}$, $\text{Compressibility only}$... $\text{Compressibility only}$ Edit Delete
11006 $\text{At a pressure of 2 atmospheres, a mass of diatomic gas (}\gamma = 1.4\text{), is compressed adiabatically, causing its temperature to rise from } 27^{\circ}\text{C to } 927^{\circ}\text{C. The pressure of the gas in the final state is:}$ 1 111 Recommended Questions $8\text{ atm}$, $28\text{ atm}$... $256\text{ atm}$ Edit Delete
11005 $\text{The pressure and density of a diatomic gas (}\gamma = 7/5\text{) changes adiabatically from (P, d) to (P', d'). If } \frac{\text{d'}}{\text{d}} = 32\text{, then } \frac{\text{P'}}{\text{P}} \text{ should be:}$ 1 111 Recommended Questions $\frac{1}{128}$, $32$... $128$ Edit Delete
11004 $\text{The pressure and volume of a gas are changed as shown in the P-V diagram. The temperature of the gas will:}$ 1 111 Recommended Questions $\text{increase as it goes from A to B.}$, $\text{increase as it goes from B to C.}$... $\text{increase as it goes from A to B.}$ Edit Delete
11003 $\text{When a bicycle tyre suddenly bursts, the air inside the tyre expands. This process is:}$ 1 111 Recommended Questions $\text{isothermal}$, $\text{adiabatic}$... $\text{adiabatic}$ Edit Delete
11002 $\text{A gas performs the minimum work when it expands:}$ 1 111 Recommended Questions $\text{Isochorically}$, $\text{Isobarically}$... $\text{Isochorically}$ Edit Delete
11001 $\text{A gas performs the minimum work when it expands:}$ 1 111 Recommended Questions $\text{Isochorically}$, $\text{Isobarically}$... $\text{Isochorically}$ Edit Delete
11000 $\text{Given below are two statements:}$ $\text{Assertion (A): In an isothermal process, whole of the heat energy supplied to the body is converted into internal energy.}$ $\text{Reason (R): According to the first law of thermodynamics, } \Delta Q = \Delta U + \Delta W.$ 1 111 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{(A) is False but (R) is True.}$ Edit Delete
10999 $\text{The heat taken by a gas (shown in the graph below) in the process } a \text{ to } b \text{ is } 6P_0V_0\text{. Match Column I with Column II.}$ 1 111 Recommended Questions $\text{A-P, B-Q, C-S, D-R}$, $\text{A-R, B-Q, C-S, D-P}$... $\text{A-Q, B-R, C-S, D-P}$ Edit Delete
10998 $\text{A monoatomic gas at a pressure } P, \text{ having a volume } V, \text{ expands isothermally to a volume } 2V \text{ and then adiabatically to a volume } 16V. \text{ The final pressure of the gas is:}$ $\left(\text{Take: } \gamma = \frac{5}{3}\right)$ 1 111 Recommended Questions $64P$, $32P$... $\frac{P}{64}$ Edit Delete
10997 $\text{The initial pressure and volume of a gas are } P \text{ and } V\text{, respectively. First, it is expanded isothermally to volume } 4V \text{ and then compressed adiabatically to volume } V\text{. The final pressure of the gas will be: [Given: } \gamma = 1.5\text{]}$ 1 111 Recommended Questions $P$, $2P$... $2P$ Edit Delete
10996 $\text{Can two isothermal curves cut each other?}$ 1 111 Recommended Questions $\text{Never}$, $\text{Yes}$... $\text{Never}$ Edit Delete
10995 $\text{Given below are two statements:}$ $\text{Statement I: When } \mu \text{ amount of an ideal gas undergoes adiabatic change from state } (P_1, V_1, T_1) \text{ to state } (P_2, V_2, T_2)\text{, the work done is } W = \frac{\mu R(T_2 - T_1)}{1 - \gamma}\text{, where } \gamma = \frac{C_P}{C_V} \text{ and } R = \text{universal gas constant.}$ $\text{Statement II: In the above case, when work is done on the gas, the temperature of the gas would rise.}$ 1 111 Recommended Questions $\text{Both Statement I and Statement II are correct.}$, $\text{Both Statement I and Statement II are incorrect.}$... $\text{Both Statement I and Statement II are correct.}$ Edit Delete
10994 $\text{Which one of the following processes is reversible?}$ 1 111 Recommended Questions $\text{Transfer of heat by radiation}$, $\text{Transfer of heat by conduction}$... $\text{Isothermal compression}$ Edit Delete
10993 $\text{An ideal gas at } 27^\circ\text{C is compressed adiabatically to } \frac{8}{27} \text{ of its original volume. If } \gamma = \frac{5}{3}\text{, then the rise in temperature will be:}$ 1 111 Recommended Questions $450 \text{ K}$, $375 \text{ K}$... $375 \text{ K}$ Edit Delete
10992 $\text{If an ideal gas undergoes two processes at constant volumes } V_1 \text{ and } V_2 \text{ as shown in the pressure-temperature } (P-T) \text{ diagram, then:}$ 1 111 Recommended Questions $V_1 = V_2$, $V_1 > V_2$... $V_1 < V_2$ Edit Delete
10991 $\text{Which of the following graph shows the variation of pressure P with volume V for an ideal gas at a constant temperature?}$ 1 111 Recommended Questions $\text{Linear decreasing graph (straight line with negative slope)}$, $\text{Exponential saturation curve (increasing and leveling off)}$... $\text{Hyperbolic curve (inverse relationship)}$ Edit Delete
10990 $\text{A polyatomic gas } (\gamma = \frac{4}{3}) \text{ is compressed to } \frac{1}{8} \text{ of its volume adiabatically. If its initial pressure is } P_0\text{, its new pressure will be:}$ 1 111 Recommended Questions $8P_0$, $16P_0$... $16P_0$ Edit Delete
10989 $\text{Thermodynamic processes are indicated in the following diagram. Match the following:}$ $\text{Column I: P. Process-I, Q. Process-II, R. Process-III, S. Process-IV}$ $\text{Column II: a. Adiabatic, b. Isobaric, c. Isochoric, d. Isothermal}$ 1 111 Recommended Questions $P \rightarrow a, Q \rightarrow c, R \rightarrow d, S \rightarrow b$, $P \rightarrow c, Q \rightarrow a, R \rightarrow d, S \rightarrow b$... $P \rightarrow c, Q \rightarrow a, R \rightarrow d, S \rightarrow b$ Edit Delete
10988 $\text{In thermodynamic processes, which of the following statements is not true?}$ 1 111 Recommended Questions $\text{In an adiabatic process, the system is insulated from the surroundings.}$, $\text{In an isochoric process, the pressure remains constant.}$... $\text{In an isochoric process, the pressure remains constant.}$ Edit Delete
10987 $\text{If an ideal gas undergoes two processes at constant volumes } V_1 \text{ and } V_2 \text{ as shown in the pressure-temperature } (P-T) \text{ diagram, then:}$ 1 111 Recommended Questions $V_1 = V_2$, $V_1 > V_2$... $V_1 < V_2$ Edit Delete
10986 $\text{The colour of the solution that gets formed by mixing sodium nitroprusside to an alkaline solution of sulfide ions, is-}$ 2 212 Recommended Questions $\text{Red}$, $\text{Blue}$... $\text{Purple}$ Edit Delete
10985 $\text{A compound that does not give a positive test in Lassaigne's test for nitrogen is-}$ 2 212 Recommended Questions $\text{Urea}$, $\text{Hydrazine}$... $\text{Hydrazine}$ Edit Delete
10984 $\text{In Dumas method of estimation of nitrogen, 0.35 g of an organic compound gave 55 ml of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be:}$ $\text{(Aqueous tension at 300 K = 15 mm)}$ 2 212 Recommended Questions $16.45$, $27.45$... $16.45$ Edit Delete
10983 $0.1688 \text{ g organic compound when analyzed by the Dumas method yields } 31.7 \text{ mL of moist nitrogen measured at } 14°\text{C, and } 758 \text{ mm mercury pressure. The \% of nitrogen in the organic compound (Aqueous tension at } 14°\text{C} = 12 \text{ mm) is-}$ 2 212 Recommended Questions $30.9\%$, $10\%$... $21.9\%$ Edit Delete
10982 $\text{In the Carius method, 0.468 grams of an organic sulphur compound gives 0.668 grams of barium sulphate. The percentage of sulphur in the given compound is -}$ 2 212 Recommended Questions $19.59\%$, $25.40\%$... $19.59\%$ Edit Delete
10981 $\text{0.24 g of an organic compound containing phosphorous gave 0.66 g of }\text{Mg}_2\text{P}_2\text{O}_7\text{ by the usual analysis. The percentage of phosphorous in the compound is-}$ 2 212 Recommended Questions $77\%$, $72\%$... $77\%$ Edit Delete
10980 $\text{In Kjeldahl's method, the nitrogen present is estimated as-}$ 2 212 Recommended Questions $\text{N}_2$, $\text{NH}_3$... $\text{NH}_3$ Edit Delete
10979 $\text{Any type of chromatography shares which of the following characteristic?}$ 2 212 Recommended Questions $\text{Use of molecules that are soluble in water.}$, $\text{Use of inert carrier gas.}$... $\text{Use of a mobile and a stationary phase.}$ Edit Delete
10978 $\text{Metallic sodium is fused with organic compounds for testing nitrogen, sulphur, and halogens. The correct reason behind this is:}$ 2 212 Recommended Questions $\text{To convert all compounds to their ionic form.}$, $\text{Sodium reduces the compounds.}$... $\text{To convert all compounds to their ionic form.}$ Edit Delete
10977 $\text{An organic compound contains 69% carbon, and 4.8% hydrogen, the remainder being oxygen. The masses of carbon dioxide, and water produced when 0.20 g of this substance is subjected to complete combustion would be respectively -}$ 2 212 Recommended Questions $0.506 \text{ g}, 0.0864 \text{ g}$, $0.906 \text{ g}, 0.0864 \text{ g}$... $0.506 \text{ g}, 0.0864 \text{ g}$ Edit Delete
10976 $\text{During estimation of nitrogen present in an organic compound, the ammonia evolved from 0.5 g of the compound in Kjeldahl's estimation of nitrogen, neutralized 10 mL of 1 M H}_2\text{SO}_4\text{. The percentage of nitrogen in the compound is-}$ 2 212 Recommended Questions $46.0\%$, $51.0\%$... $56.0\%$ Edit Delete
10975 $\text{The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapor in the vapor phase. A suitable method for the extraction of these oils from the flowers is}$ 2 212 Recommended Questions $\text{Distillation}$, $\text{Crystallisation}$... $\text{Steam distillation}$ Edit Delete
10974 $\text{Match Column I with Column II.}$ $\text{Column I}$ $\text{A. Dumas method}$ $\text{B. Kjeldahl's method}$ $\text{C. Carius method}$ $\text{D. Chromatography}$ $\text{Column II}$ $\text{1. AgNO}_3$ $\text{2. Silica gel}$ $\text{3. Nitrogen gel}$ $\text{4. Ammonium sulphate}$ $\text{Choose the correct answer from the options given below:}$ 2 212 Recommended Questions $\text{A-3, B-4, C-1, D-2}$, $\text{A-1, B-2, C-3, D-4}$... $\text{A-3, B-4, C-1, D-2}$ Edit Delete
10973 $\text{The Lassaigne's extract is boiled with conc. HNO}_3 \text{ while testing for halogens, because it:}$ 2 212 Recommended Questions $\text{Helps in the precipitation of AgCl}$, $\text{Increases the solubility product of AgCl}$... $\text{Decomposes Na}_2\text{S and NaCN, if formed}$ Edit Delete
10972 $\text{0.3780 grams of an organic chloro compound gave 0.5740 grams of silver chloride in Carius estimation. % of chlorine present in the compound is -}$ 2 212 Recommended Questions $25\%$, $37.59\%$... $37.59\%$ Edit Delete
10971 $\text{Ether and benzene can be separated by-}$ 2 212 Recommended Questions $\text{Filtration}$, $\text{Distillation}$... $\text{Distillation}$ Edit Delete
10970 $\text{0.26 g of an organic compound gave 0.039 g of water and 0.245 g of carbon dioxide on combustion. The percentage of C in the organic compound is-}$ 2 212 Recommended Questions $35\%$, $25\%$... $25\%$ Edit Delete
10969 $\text{0.284 g of an organic substance gave 0.287 g AgCl in a carius method for the estimation of halogen. The percentage of Cl in the compound is-}$ 2 212 Recommended Questions $5\%$, $18\%$... $25\%$ Edit Delete
10968 $\text{In an estimation of sulphur by the carius method, 0.2175 g of the substance gave 0.5825 g of BaSO}_4\text{. The percentage composition of S in the compound is-}$ 2 212 Recommended Questions $66\%$, $20\%$... $37\%$ Edit Delete
10967 $\text{In Kjeldahl's method of estimation of nitrogen, } \text{K}_2\text{SO}_4 \text{ acts as:}$ 2 212 Recommended Questions $\text{An oxidizing agent}$, $\text{A catalytic agent}$... $\text{A boiling point elevator}$ Edit Delete
10966 $\text{Soda extract is prepared by-}$ 2 212 Recommended Questions $\text{Fusing soda and mixture of hydrocarbons, and then extracted with water}$, $\text{Dissolving NaHCO}_3 \text{ and mixture of hydrocarbons in dil. HCl}$... $\text{Boiling Na}_2\text{CO}_3 \text{ and mixture of hydrocarbons in distilled water}$ Edit Delete
10965 $\text{Silver sulphate solution is used to separate:}$ 2 212 Recommended Questions $\text{Nitrate and bromide}$, $\text{Nitrate and chlorate}$... $\text{Nitrate and bromide}$ Edit Delete
10964 $\text{The acid used for the acidification of sodium extract for testing sulphur is:}$ 2 212 Recommended Questions $\text{Sulphuric acid}$, $\text{Acetic acid}$... $\text{Acetic acid}$ Edit Delete
10963 $\text{In sulphur estimation, 0.157 g of an organic compound gave 0.4813 g of barium sulphate. The percentage of sulphur in the compound is-}$ 2 212 Recommended Questions $39.10\%$, $48.13\%$... $42.10\%$ Edit Delete
10962 $\text{Lassaigne's test can detect:}$ 2 212 Recommended Questions $\text{Nitrogen, Sulphur, Halogens}$, $\text{Nitrogen, Cyanides, Sulphur}$... $\text{Nitrogen, Sulphur, Halogens, Phosphorus}$ Edit Delete
10961 $0.2 \text{ g of an organic compound on complete combustion produces } 0.44 \text{ g of } \text{CO}_2\text{. The percentage of carbon is -}$ 2 212 Recommended Questions $50\%$, $60\%$... $60\%$ Edit Delete
10960 $\text{The Prussian blue colour obtained during the test of nitrogen by Lassaigne's test is due to the formation of-}$ 2 212 Recommended Questions $\text{Fe}_4[\text{Fe}(\text{CN})_6]_3$, $\text{Na}_3[\text{Fe}(\text{CN})_6]$... $\text{Fe}_4[\text{Fe}(\text{CN})_6]_3$ Edit Delete
10959 $\text{Assertion (A): CCl}_4 \text{ doesn't give precipitate of AgCl on heating with } \text{AgNO}_3.$ $\text{Reason (R): CCl}_4 \text{ is a non-polar molecule.}$ 2 212 Recommended Questions $\text{(A) is True and (R) is the correct explanation of (A).}$, $\text{(A) is True but (R) is not the correct explanation of (A).}$... $\text{(A) is True but (R) is not the correct explanation of (A).}$ Edit Delete
10958 $\text{In Kjeldahl's method for estimation of nitrogen present in the soil sample, ammonia evolved from 0.75g of sample neutralized 10ml. of 1M H}_2\text{SO}_4\text{. The percentage of nitrogen in the soil is:}$ 2 212 Recommended Questions $37.33$, $45.85$... $37.33$ Edit Delete
10957 $\text{Nitric acid is added to sodium extract before adding silver nitrate for testing halogens because:}$ 2 212 Recommended Questions $\text{Nitric acid reduces sulphide}$, $\text{Nitric acid decomposes NaCN and Na}_2\text{S}$... $\text{Nitric acid decomposes NaCN and Na}_2\text{S}$ Edit Delete
10956 $\text{The most suitable method used for the separation of 1:1 mixture of ortho and para-nitrophenols is:}$ 2 212 Recommended Questions $\text{Chromatography}$, $\text{Crystallization}$... $\text{Steam distillation}$ Edit Delete
10955 $\text{A gas among the following that can be absorbed by potassium hydroxide is -}$ 2 212 Recommended Questions $\text{Carbon dioxide}$, $\text{Silicon dioxide}$... $\text{Carbon dioxide}$ Edit Delete
10954 $\text{A mixture of calcium sulphate and camphor can be separated by-}$ 2 212 Recommended Questions $\text{Filtration}$, $\text{Evaporation}$... $\text{Sublimation}$ Edit Delete
10953 $\text{Paper chromatography operates based on which of the following principles?}$ 2 212 Recommended Questions $\text{Adsorption}$, $\text{Partition}$... $\text{Partition}$ Edit Delete
10952 $\text{In the steam distillation of toluene, the pressure of toluene in the vapour is:}$ 2 212 Recommended Questions $\text{Equal to the pressure of the barometer}$, $\text{Less than the pressure of the barometer}$... $\text{Less than the pressure of the barometer}$ Edit Delete
10951 $\text{The best method used for the separation of naphthalene and benzoic acid from their mixture is -}$ 2 212 Recommended Questions $\text{Sublimation}$, $\text{Chromatography}$... $\text{Sublimation}$ Edit Delete
10950 $\text{The purification method based on the difference in solubilities of the compound and the impurities in a solvent is -}$ 2 212 Recommended Questions $\text{Crystallisation}$, $\text{Distillation}$... $\text{Crystallisation}$ Edit Delete
10949 $\text{During the hearing of a court case, the judge suspected that some changes in the documents had been carried out. He asked the forensic department to check the ink used at two different places. The technique that can give the best results is-}$ 2 212 Recommended Questions $\text{Column chromatography}$, $\text{Solvent extraction}$... $\text{Thin layer chromatography}$ Edit Delete
10948 $\text{The method that can be used to separate two compounds with different solubilities in a solvent is-}$ 2 212 Recommended Questions $\text{Distillation}$, $\text{Isolation}$... $\text{Fractional crystallization}$ Edit Delete
10947 $\text{The latest technique for isolation, purification and separation of organic compounds is -}$ 2 212 Recommended Questions $\text{Crystallisation}$, $\text{Distillation}$... $\text{Chromatography}$ Edit Delete
10946 $\text{Halogen in an organic compound that can be detected by -}$ 2 212 Recommended Questions $\text{Duma's method}$, $\text{Carius method}$... $\text{Carius method}$ Edit Delete
10945 $\text{Paper chromatography is an example of-}$ 2 212 Recommended Questions $\text{Partition chromatography}$, $\text{Thin layer chromatography}$... $\text{Partition chromatography}$ Edit Delete
10944 $\text{If a liquid compound decomposes at or below its boiling point, then the best method for purification is-}$ 2 212 Recommended Questions $\text{Distillation under reduced pressure}$, $\text{Azeotropic distillation}$... $\text{Distillation under reduced pressure}$ Edit Delete
10943 $\text{Match the type of mixture of compounds in Column I with the technique of separation/purification given in Column II.}$ $\text{Column I:}$ $\text{A. Two solids which have different solubilities in a solvent and which do not undergo a reaction when dissolved in it}$ $\text{B. Liquid that decomposes at its boiling point}$ $\text{C. Steam volatile liquid}$ $\text{D. Two liquids that have boiling points close to each other}$ $\text{Column II:}$ $\text{1. Steam distillation}$ $\text{2. Fractional distillation}$ $\text{3. Crystallisation}$ $\text{4. Distillation under reduced pressure}$ 2 212 Recommended Questions $\text{A-3, B-4, C-1, D-2}$, $\text{A-1, B-2, C-3, D-4}$... $\text{A-3, B-4, C-1, D-2}$ Edit Delete
10942 $\text{A liquid compound (X) can be purified by steam distillation only if it is:}$ 2 212 Recommended Questions $\text{Steam volatile, immiscible with water.}$, $\text{Not steam volatile, miscible with water.}$... $\text{Steam volatile, immiscible with water.}$ Edit Delete
10941 $\text{CH}_2\text{H} - \text{CH}_2\text{Cl} \xrightarrow{\text{NaOH/alk.}} \text{CH}_2 = \text{CH}_2$ $\text{Most probable mechanism for this reaction is-}$ 2 212 Recommended Questions $\text{E1}$, $\text{E2}$... $\text{E2}$ Edit Delete
10940 $\text{The double bond in the above-mentioned compound that accepts proton (H}^+\text{) fastest is:}$ $\text{The compound shows a bicyclic structure with methyl groups at specific positions, with double bonds labeled A, B, C, and D.}$ 2 212 Recommended Questions $\text{A}$, $\text{B}$... $\text{A}$ Edit Delete
10939 $\text{The compound that gives the most stable carbonium ion after C-Cl bond ionisation among the following is-}$ 2 212 Recommended Questions $\text{H}_3\text{C}-\text{C}(\text{H})-\text{Cl}$ $|$ $\text{H}_3\text{C}$, $\text{H}_3\text{C}-\text{C}(\text{CH}_3)-\text{Cl}$ $|$ $\text{H}_3\text{C}$ $|$ $\text{CH}_3$... $\text{H}_3\text{C}-\text{C}(\text{CH}_3)-\text{Cl}$ $|$ $\text{H}_3\text{C}$ $|$ $\text{CH}_3$ Edit Delete
10938 $\text{The decreasing order of the stability of the given ions is-}$ 2 212 Recommended Questions $\text{I}>\text{II}>\text{III}$, $\text{II}>\text{III}>\text{I}$... $\text{II}>\text{I}>\text{III}$ Edit Delete
10937 $\text{Which of the following species exhibits paramagnetism?}$ 2 212 Recommended Questions $\text{A carbocation}$, $\text{A free radical}$... $\text{A free radical}$ Edit Delete
10936 $\text{The species that contains only three pairs of electrons among the following is-}$ 2 212 Recommended Questions $\text{Carbocation}$, $\text{Carbanion}$... $\text{Carbocation}$ Edit Delete
10935 $\text{The decreasing order of the stability of the given ions is-}$ 2 212 Recommended Questions $\text{I}>\text{II}>\text{III}$, $\text{II}>\text{III}>\text{I}$... $\text{II}>\text{I}>\text{III}$ Edit Delete
10934 $\text{A tertiary butyl carbocation is more stable than a secondary butyl carbocation because-}$ 2 212 Recommended Questions $+\text{R effect of } \text{CH}_3 \text{ groups}$, $-\text{R effect of } -\text{CH}_3 \text{ groups}$... $\text{Hyperconjugation}$ Edit Delete
10933 $\text{The most stable carbocation among the following is:}$ 2 212 Recommended Questions $\text{Triphenyl carbocation (three benzene rings attached to C}^+\text{)}$, $\text{Diphenylmethyl carbocation (two benzene rings and one CH}_3 \text{ attached to C}^+\text{)}$... $\text{Triphenyl carbocation (three benzene rings attached to C}^+\text{)}$ Edit Delete
10932 $\text{The decreasing order of the stability of the given ions is-}$ 2 212 Recommended Questions $\text{I}>\text{II}>\text{III}$, $\text{II}>\text{III}>\text{I}$... $\text{II}>\text{I}>\text{III}$ Edit Delete
10931 $\text{The decreasing order of the stability of the given ions is-}$ 2 212 Recommended Questions $\text{I}>\text{II}>\text{III}$, $\text{II}>\text{III}>\text{I}$... $\text{II}>\text{I}>\text{III}$ Edit Delete
10930 $\text{Free radical formation will take place in:}$ 2 212 Recommended Questions $\text{H}_3\text{CO}-\text{OCH}_3 \longrightarrow \text{CH}_3\text{O}^\bullet + \text{CH}_3\text{O}^\bullet$, $\text{H}_3\text{C}\text{COCH}_3 + \text{OH}^- \longrightarrow \text{H}_3\text{C}\text{COCH}_2^- + \text{H}_2\text{O}$... $\text{H}_3\text{CO}-\text{OCH}_3 \longrightarrow \text{CH}_3\text{O}^\bullet + \text{CH}_3\text{O}^\bullet$ Edit Delete
10929 $\text{The Huckel's rule-based aromaticity is shown by:}$ 2 212 Recommended Questions $\text{A, B, D only}$, $\text{B, D only}$... $\text{B, D, E and F only}$ Edit Delete
10928 $\text{The hydrocarbons having the lowest dipole moment among the following is:}$ 2 212 Recommended Questions $\text{H}_3\text{C}\text{CH}=\text{CHCH}_3$ (2-butene), $\text{CH}_3-\text{C}\equiv\text{C}-\text{CH}_3$ (2-butyne)... $\text{CH}_3-\text{C}\equiv\text{C}-\text{CH}_3$ (2-butyne) Edit Delete
10927 $\text{The aromatic compound among the following is:}$ 2 212 Recommended Questions $\text{Cyclohexadienyl anion (6-membered ring with negative charge)}$, $\text{Cyclobutadiene (4-membered ring)}$... $\text{Cyclopentadienyl anion (5-membered ring with negative charge)}$ Edit Delete
10926 $\text{The aromatic structure(s) out of given structures is/are:}$ 2 212 Recommended Questions {A, C, D, F & G only}, {A & D only}... $\text{A, C, E, F only}$ Edit Delete
10925 $\text{The compound that is most difficult to protonate is:}$ 2 212 Recommended Questions $\text{Ph-O-H (Phenol)}$, $\text{H-O-H (Water)}$... $\text{Ph-O-H (Phenol)}$ Edit Delete
10924 $\text{The correct order of acidity among the following is:}$ 2 212 Recommended Questions $\text{CH}_2=\text{CH}_2 > \text{CH}\equiv\text{CH} > \text{CH}_3\text{C}\equiv\text{CH} > \text{CH}_3-\text{CH}_3$, $\text{CH}\equiv\text{CH} > \text{CH}_3-\text{C}\equiv\text{CH} > \text{CH}_2=\text{CH}_2 > \text{CH}_3-\text{CH}_3$... $\text{CH}\equiv\text{CH} > \text{CH}_3-\text{C}\equiv\text{CH} > \text{CH}_2=\text{CH}_2 > \text{CH}_3-\text{CH}_3$ Edit Delete
10923 $\text{Which one of the following has the most acidic nature?}$ 2 212 Recommended Questions $\text{Benzyl alcohol (C}_6\text{H}_5\text{CH}_2\text{OH)}$, $\text{Phenol (C}_6\text{H}_5\text{OH)}$... $\text{Phenol (C}_6\text{H}_5\text{OH)}$ Edit Delete
10922 $\text{What is the correct sequence of acidity for the following compounds?}$ 2 212 Recommended Questions $\text{CH}_3\text{COOH} > \text{BrCH}_2\text{COOH} > \text{ClCH}_2\text{COOH} > \text{FCH}_2\text{COOH}$, $\text{FCH}_2\text{COOH} > \text{CH}_3\text{COOH} > \text{BrCH}_2\text{COOH} > \text{ClCH}_2\text{COOH}$... $\text{FCH}_2\text{COOH} > \text{ClCH}_2\text{COOH} > \text{BrCH}_2\text{COOH} > \text{CH}_3\text{COOH}$ Edit Delete
10921 $\text{The correct order with respect to -I effect of the substituents is:}$ $\text{(R = alkyl)}$ 2 212 Recommended Questions $-\text{NH}_2 > -\text{OR} < -\text{F}$, $-\text{NR}_2 < -\text{OR} < -\text{F}$... $-\text{NR}_2 < -\text{OR} < -\text{F}$ Edit Delete
10920 $\text{Alkyl groups act as electron donors when attached to a } \pi \text{ system due to:}$ 2 212 Recommended Questions $\text{Inductive effect}$, $\text{Mesomeric effect}$... $\text{Hyperconjugation}$ Edit Delete
10919 $\text{The most stable canonical structure among the given structures is/are:}$ 2 212 Recommended Questions $\text{I}$, $\text{II}$... $\text{III}$ Edit Delete
10918 $\text{The total number of resonating structures (excluded the given structure) formed by the given molecule are:}$ 2 212 Recommended Questions $2$, $3$... $3$ Edit Delete
10917 $\text{The major contributor to the resonance hybrid among the following resonance structures is-}$ $\text{(CH)}_3 - \text{(CH)}_2 - \text{CH} - \text{O}::(\text{CH})_3 \leftrightarrow$ $\text{(I)}$ $\text{(CH)}_3 - \text{(CH)}_2 - \text{CH} = \text{O}^\oplus(\text{CH})_3$ $\text{(II)}$ 2 212 Recommended Questions $\text{I}$, $\text{II}$... $\text{II}$ Edit Delete
10916 $\text{Consider the following resonating structures of HCOOH}$ $\text{I. H-C-O-H (with double bond between C and first O, lone pairs shown)}$ $\text{II. H-C=O-H (with positive charge on C, negative charge on first O)}$ $\text{III. H-C-O-H (with negative charge on first O, positive charge on C)}$ $\text{IV. H-C-O-H (with positive charge on first O, negative charge on second O)}$ $\text{The order of stability is-}$ 2 212 Recommended Questions $\text{I>II>III>IV}$, $\text{IV>I>II>III}$... $\text{I>II>III>IV}$ Edit Delete
10915 $\text{The correct order of decreasing stability of the following carbocations is:}$ 2 212 Recommended Questions $$\text{II} > \text{I} > \text{III}$$, $$\text{I} > \text{II} > \text{III}$$... $$\text{II} > \text{I} > \text{III}$$ Edit Delete
10914 $\text{The resonance hybrid structure will not exist for-}\n\text{a. } \text{CH}_3\text{OH}\n\text{b. } \text{R - CONH}_2\n\text{c. } \text{CH}_3\text{CH} = \text{CHCH}_2\text{NH}_2$ 2 212 Recommended Questions $\text{a, and c}$, $\text{a, and b only}$... $\text{a, and c}$ Edit Delete
10913 $\text{The correct reactivity order towards hydrolysis is:}$ $\text{(P) } \text{Cl-benzene with NO}_2 \text{ at meta position}$ $\text{(Q) } \text{CH}_2\text{Cl-benzene with OCH}_3 \text{ at para position}$ $\text{(R) } \text{Cl-benzene with NO}_2 \text{ at para position}$ $\text{(S) } \text{CH}_2\text{Cl-benzene with OCH}_3 \text{ at meta position}$ 2 212 Recommended Questions $\text{Q}>\text{R}>\text{S}>\text{P}$, $\text{Q}>\text{P}>\text{R}>\text{S}$... $\text{Q}>\text{S}>\text{R}>\text{P}$ Edit Delete
10912 $\text{Which of the following carbon marked with asterisk is expected to have greatest positive charge?}\n\text{1. } {*}\text{CH}_3 - \text{CH}_2 - \text{Cl}\n\text{2. } {*}\text{CH}_3 - \text{CH}_2 - \text{Mg}^{+}\text{Cl}^{-}\n\text{3. } {*}\text{CH}_3 - \text{CH}_2 - \text{Br}\n\text{4. } {*}\text{CH}_3 - \text{CH}_2 - \text{CH}_3$ 2 212 Recommended Questions ${*}\text{CH}_3 - \text{CH}_2 - \text{Cl}$, ${*}\text{CH}_3 - \text{CH}_2 - \text{Mg}^{+}\text{Cl}^{-}$... ${*}\text{CH}_3 - \text{CH}_2 - \text{Cl}$ Edit Delete
10911 $\text{The correct order of -I effect is:}$ 2 212 Recommended Questions $-\text{NR}_3^+ > -\text{OR} > -\text{F}$, $-\text{F} > -\text{NR}_3^+ > -\text{OR}$... $-\text{NR}_3^+ > -\text{F} > -\text{OR}$ Edit Delete
10910 $\text{Arrange the following groups in order of decreasing -I (inductive) effect:}$ $\text{NO}_2, \text{C}(\text{CH}_3)_3, \text{CH}_3, \text{OCH}_3, \text{Br}$ 2 212 Recommended Questions $\text{NO}_2 > \text{Br} > \text{OCH}_3 > \text{C}(\text{CH}_3)_3 > \text{CH}_3$, $\text{NO}_2 > \text{Br} > \text{OCH}_3 > \text{CH}_3 > \text{C}(\text{CH}_3)_3$... $\text{NO}_2 > \text{Br} > \text{OCH}_3 > \text{CH}_3 > \text{C}(\text{CH}_3)_3$ Edit Delete
10909 $\text{The carbocation among the following that doesn't get stabilized by resonance is:}$ 2 212 Recommended Questions $\text{Cyclohexyl ring with a double bond and a positive charge at the allylic position}$, $\text{Allylic carbocation with a double bond adjacent to the positive charge}$... $\text{Carbocation with a double bond not adjacent to the positive charge}$ Edit Delete
10908 $\text{Compare the stability of the two resonating structures given below and mark the correct option:}$ $\text{H}_3\text{C}=\text{C}-\text{C}=\text{O} \leftrightarrow \text{H}_3\text{C}^+-\text{C}=\text{C}-\text{O}^-$ $\text{(I)} \hspace{50pt} \text{(II)}$ 2 212 Recommended Questions $\text{(I) is more stable than (II)}$, $\text{(II) is more stable than (I)}$... $\text{(I) is more stable than (II)}$ Edit Delete
10907 $\text{The correct order regarding the electronegativity of hybrid orbitals of carbon is:}$ 2 212 Recommended Questions $sp > sp^2 < sp^3$, $sp > sp^2 > sp^3$... $sp > sp^2 > sp^3$ Edit Delete
10906 $\text{Which carboxylate ion among the following is the most stable?}$ 2 212 Recommended Questions $\text{CH}_3 - \text{C} - \text{O}^-$ with $\text{O}$ double bonded above $\text{C}$, $\text{Cl} - \text{CH}_2 - \text{C} - \text{O}^-$ with $\text{O}$ double bonded above $\text{C}$... $\text{F}_2\text{CH} - \text{C} - \text{O}^-$ with $\text{O}$ double bonded above $\text{C}$ Edit Delete
10905 $\text{The most stable carbocation among the following is:}$ 2 212 Recommended Questions $(CH_3)_3C^+CHCH_3$, $CH_3CH_2CH^+CH_2CH_3$... $(CH_3)_2CCH_2CH_2CH_3^+$ Edit Delete
10904 $\text{The most stable carbocation among the following is-}$ 2 212 Recommended Questions $(\text{CH}_3)_3\text{C}^+\text{CH}_2$, $(\text{CH}_3)_3\text{C}^+$... $(\text{CH}_3)_3\text{C}^+$ Edit Delete
10903 $\text{Among the following groups maximum -I effect is exerted by:}$ 2 212 Recommended Questions $-\text{C}_6\text{H}_5$, $-(\text{OCH})_3$... $-\text{NO}_2$ Edit Delete
10902 $\text{The effect that makes 2,3-dimethyl-2-butene more stable than 2-butene is-}$ 2 212 Recommended Questions $\text{Resonance}$, $\text{Hyperconjugation}$... $\text{Hyperconjugation}$ Edit Delete
10901 $\text{O}_2\text{NCH}_2\text{CH}_2\text{O}^- \text{ is more stable than } \text{CH}_3\text{CH}_2\text{O}^- \text{ because:}$ 2 212 Recommended Questions $\text{NO}_2 \text{ shows +I effect}$, $\text{NO}_2 \text{ shows -I effect}$... $\text{NO}_2 \text{ shows -I effect}$ Edit Delete
10900 $\text{The effect that can explain the given order of acidity of the carboxylic acids is-}$ $\text{Cl}_3\text{CCOOH} > \text{Cl}_2\text{CHCOOH} > \text{ClCH}_2\text{COOH}$ 2 212 Recommended Questions $+\text{I effect}$, $-\text{I effect}$... $-\text{I effect}$ Edit Delete
10899 $\text{The addition of HCl to an alkene proceeds in two steps. The first step is the attack of H}^+ \text{ ion on the double bond portion. The same can be shown as-}$ 2 212 Recommended Questions $\text{H}^+ \text{ attacking one carbon of the double bond with arrow pointing from H}^+ \text{ to the carbon}$, $\text{H}^+ \text{ attacking one carbon of the double bond with arrow pointing from the double bond to H}^+$... $\text{H}^+ \text{ attacking one carbon of the double bond with arrow pointing from the double bond to H}^+$ Edit Delete
10898 $\text{Chlorine atom can be classified as:}$ 2 212 Recommended Questions $\text{Carbocation}$, $\text{Nucleophile}$... $\text{Electrophile}$ Edit Delete
10897 $\text{The species among the following that is not an electrophile is:}$ 2 212 Recommended Questions $\text{BH}_3$, $\text{H}_3\text{O}^+$... $\text{H}_3\text{O}^+$ Edit Delete
10896 $\text{The correct order of the leaving group ability is:}$ 2 212 Recommended Questions $\text{OCOC}_2\text{H}_5 > \text{OC}_2\text{H}_5 > \text{OSO}_2\text{Me} > \text{OSO}_2\text{CF}_3$, $\text{OC}_2\text{H}_5 > \text{OCOC}_2\text{H}_5 > \text{OSO}_2\text{CF}_3 > \text{OSO}_2\text{Me}$... $\text{OSO}_2\text{CF}_3 > \text{OSO}_2\text{Me} > \text{OCOC}_2\text{H}_5 > \text{OC}_2\text{H}_5$ Edit Delete
10895 $\text{Electrophilic addition reactions proceed in two steps. The first step involves the addition of an electrophile. The major intermediate formed in the first step is -}$ $\text{H}_3\text{C} - \text{HC} = \text{CH}_2 + \text{H}^+ \rightarrow ?$ 2 212 Recommended Questions $2^\circ \text{ carbanion}$, $1^\circ \text{ carbocation}$... $2^\circ \text{ carbocation}$ Edit Delete
10894 $\text{An electrophile among the following is :}$ 2 212 Recommended Questions $\text{OH}^-$, $\text{NC}^-$... $\text{Carbonyl group}$ Edit Delete
10893 $\text{The incorrect statement among the following for a nucleophile is:}$ 2 212 Recommended Questions $\text{Nucleophile is a Lewis acid}$, $\text{Ammonia is a nucleophile}$... $\text{Nucleophile is a Lewis acid}$ Edit Delete
10892 $\text{The most stable carbanion species among the following is-}$ 2 212 Recommended Questions $CCl_3^-$, $CH_3^-$... $CCl_3^-$ Edit Delete
10891 $\text{The correct statement regarding electrophile is :}$ 2 212 Recommended Questions $\text{Electrophile is a negatively charged species and can form a bond by accepting a pair of electrons from another electrophile}$, $\text{Electrophiles are generally neutral species and can form a bond by accepting a pair of electrons from a nucleophile}$... $\text{Electrophiles can be either neutral or positively charged species and can form a bond accepting a pair of electrons from a nucleophile}$ Edit Delete
10890 $\text{The pair of structures given below represent-}$ 2 212 Recommended Questions $\text{Enantiomers}$, $\text{Position isomers}$... $\text{Position isomers}$ Edit Delete
10889 $\text{The most stable conformation of n-butane among the following is:}$ 2 212 Recommended Questions $\text{Newman projection showing two CH}_3 \text{ groups in gauche position}$, $\text{Newman projection showing two CH}_3 \text{ groups in anti position}$... $\text{Newman projection showing two CH}_3 \text{ groups in anti position}$ Edit Delete
10888 $\text{The R and S enantiomers of an optically active compound differ in:}$ 2 212 Recommended Questions $\text{Their optical rotation of plane-polarized light.}$, $\text{Their reactivity with chiral reagents.}$... $\text{Their optical rotation of plane-polarized light.}$ Edit Delete
10887 $\text{A total number of structural isomeric aldehydes and ketones that can exist with the molecular formula C}_5\text{H}_{10}\text{O are :}$ 2 212 Recommended Questions $5$, $8$... $7$ Edit Delete
10886 $\text{Fischer projection indicates:}$ 2 212 Recommended Questions $\text{Horizontal substituents above the plane.}$, $\text{Vertical substituents above the plane.}$... $\text{Horizontal substituents above the plane.}$ Edit Delete
10885 $\text{The optically active compound among the following is-}$ 2 212 Recommended Questions $\text{Isobutyric acid}$, $\text{beta-Chloropropionic acid}$... $\text{alpha-Chloropropionic acid}$ Edit Delete
10884 $\text{The optically active compound among the following is-}$ 2 212 Recommended Questions $\text{Glycerine}$, $\text{Acetaldehyde}$... $\text{Glyceraldehyde}$ Edit Delete
10883 $\text{Glucose and fructose are-}$ 2 212 Recommended Questions $\text{Chain isomers}$, $\text{Position isomers}$... $\text{Functional isomers}$ Edit Delete
10882 $\text{The maximum number of stereoisomers possible for 3-hydroxy-2-methyl butanoic acid is/are :}$ 2 212 Recommended Questions $1$, $2$... $4$ Edit Delete
10881 $\text{The optically active compound among the following is-}$ 2 212 Recommended Questions $\text{Butane}$, $\text{2-Methyl pentane}$... $\text{3-Methyl hexane}$ Edit Delete
10880 $\text{The structure of diphenylmethane is given below:}$ $\text{(Structure shows two benzene rings connected by a CH}_2 \text{ group)}$ $\text{The number of structural isomers possible when one of the hydrogen atom is replaced by a chlorine atom are :}$ 2 212 Recommended Questions $6$, $4$... $4$ Edit Delete
10879 $\text{But-2-ene exhibits cis-trans isomerism due to-}$ 2 212 Recommended Questions $\text{Rotation around } \text{C}_3 - \text{C}_4 \text{ sigma bond}$, $\text{Rotation around } \text{C}_1 - \text{C}_2 \text{ bond}$... $\text{Restricted rotation around C=C bond}$ Edit Delete
10878 $\text{The chiral compound among the following is:}$ 2 212 Recommended Questions $\text{2-Methylpentanoic acid}$, $\text{Pentanoic acid}$... $\text{2-Methylpentanoic acid}$ Edit Delete
10877 $\text{The compounds that show geometrical isomerism among the following are:}$ 2 212 Recommended Questions $\text{a, b}$, $\text{c, d}$... $\text{a, c}$ Edit Delete
10876 $\text{Geometrical isomerism is caused by-}$ 2 212 Recommended Questions $\text{Restricted rotation around C=C bond.}$, $\text{The presence of one asymmetric carbon atom.}$... $\text{Restricted rotation around C=C bond.}$ Edit Delete
10875 $\text{Geometrical isomerism can be shown by:}$ 2 212 Recommended Questions $\text{Ketone compounds with different positions of functional groups}$, $\text{Alkenes with deuterium and hydrogen substituents}$... $\text{Alkenes with deuterium and hydrogen substituents}$ Edit Delete
10874 $\text{Total isomers for } \text{C}_4\text{H}_{10}\text{O} \text{ are-}$ 2 212 Recommended Questions $4$, $5$... $8$ Edit Delete
10873 $\text{The number of chain isomers for } \text{C}_5\text{H}_{12} \text{ and } \text{C}_6\text{H}_{14} \text{ are, respectively:}$ 2 212 Recommended Questions $3, 3$, $3, 5$... $3, 3$ Edit Delete
10872 $\text{The total number of isomers of } \text{C}_4\text{H}_8 \text{ are-}$ 2 212 Recommended Questions $8$, $7$... $6$ Edit Delete
10871 $\text{Number of monochlorinated products (excluding stereo-isomers) obtained from the given reaction are:}$ $\text{Given compound: 1,3-dimethylcyclohexane undergoes free radical substitution with } \text{Cl}_2/h\nu$ 2 212 Recommended Questions $4$, $5$... $5$ Edit Delete
10870 $\text{The number of primary amines of the formula } \text{C}_4\text{H}_{11}\text{N} \text{ are:}$ 2 212 Recommended Questions $1$, $3$... $4$ Edit Delete
10869 $\text{The number of possible isomers of the aromatic compound with molecular formula } \text{C}_7\text{H}_8\text{O} \text{ are:}$ 2 212 Recommended Questions $3$, $5$... $5$ Edit Delete
10868 $\text{The pair among the following that does not contain position isomers is -}$ 2 212 Recommended Questions $\text{CH}_3-\text{CH}-\text{Cl}$ $\text{and}$ $\text{CH}_2-\text{CH}_2-\text{Cl}$ $\text{with OH groups above the CH carbon atoms}$, $\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{NH}_2$ $\text{and}$ $\text{CH}_3-\text{CH}-\text{CH}_3$ $\text{with NH}_2 \text{ group above the middle CH carbon}$... $\text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CN}$ $\text{and}$ $\text{CH}_3-\text{CH}_2-\text{CH}-\text{CH}_3$ $\text{with CN group above the CH carbon}$ Edit Delete
10867 $\text{The pair that represents chain isomers is:-}$ 2 212 Recommended Questions $\text{CH}_3-\text{CH}(\text{CH}_3)-\text{C}(=\text{O})-\text{OH} \text{ and } \text{CH}_3-\text{CH}_2-\text{C}(=\text{O})-\text{OCH}_3$, $\text{CH}_3-\text{CH}(\text{CH}_3)-\text{CH}_2-\text{CH}_2-\text{CH}_3 \text{ and } \text{CH}_3-\text{CH}_2-\text{CH}(\text{CH}_3)-\text{CH}_2-\text{CH}_3$... $\text{CH}_3-\text{CH}_2-\text{CH}(\text{CN})-\text{CH}_3 \text{ and } \text{CH}_3-\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{CN}$ Edit Delete
10866 $\text{The pair that represents chain isomers is-}$ 2 212 Recommended Questions $\text{CH}_3\text{CHCl}_2$ $\text{and}$ $\text{ClCH}_2\text{CH}_2\text{Cl}$, $\text{Propyl alcohol and Isopropyl alcohol}$... $\text{2-Methylbutane and Neopentane}$ Edit Delete
10865 $\text{Which of the following organic compounds exhibit tautomerism?}$ 2 212 Recommended Questions $\text{I and II}$, $\text{I, III and IV}$... $\text{I, II and IV}$ Edit Delete
10864 $\text{The number of isomeric structures for C}_2\text{H}_7\text{N would be:}$ 2 212 Recommended Questions $4$, $3$... $2$ Edit Delete
10863 $\text{The pair of structures that does not represent isomers is:}$ 2 212 Recommended Questions $\text{Six-membered ring with oxygen at position 1 and six-membered ring with oxygen at position 1}$, $\text{Five-membered ring with OH group and six-membered ring with oxygen}$... $\text{Six-membered ring with oxygen at different positions}$ Edit Delete
10862 $\text{The type of structural isomerism shown by given compounds is-}$ $\text{CH}_3-\text{S}-\text{CH}_2-\text{CH}_2-\text{CH}_3$ $\text{and}$ $\text{CH}_3-\text{S}-\text{CH}(\text{CH}_3)_2$ 2 212 Recommended Questions $\text{Tautomerism}$, $\text{Positional isomerism}$... $\text{Positional isomerism}$ Edit Delete
10861 $\text{Which of the following is an isomer of ethanol?}$ 2 212 Recommended Questions $\text{Methanol}$, $\text{Diethyl ether}$... $\text{Dimethyl ether}$ Edit Delete
10860 $\text{Alkyl cyanide } R - C \equiv N \text{ and alkyl isocyanides } R - \overline{N} \equiv C^- \text{ are:}$ 2 212 Recommended Questions $\text{Tautomers}$, $\text{Metamers}$... $\text{Functional isomers}$ Edit Delete
10859 $\text{Functional isomer is not possible for:}$ 2 212 Recommended Questions $\text{Alcohols}$, $\text{Aldehydes}$... $\text{Alkyl halides}$ Edit Delete
10858 $\text{Which types of isomerism can be exhibited by compounds with the molecular formula } \text{C}_4\text{H}_{11}\text{N}\text{?}$ 2 212 Recommended Questions $\text{Position isomerism}$, $\text{Metamerism}$... $\text{All of the above}$ Edit Delete
10857 $\text{Isomerism exhibited by acetic acid and methyl formate is:}$ 2 212 Recommended Questions $\text{Functional}$, $\text{Chain}$... $\text{Functional}$ Edit Delete
10856 $\text{In an } S_N1 \text{ reaction on chiral center, there is:}$ 2 212 Recommended Questions 100% racemization, $\text{Inversion is more than retention leading to partial racemization.}$... $\text{Inversion is more than retention leading to partial racemization.}$ Edit Delete
10855 $\text{The correct representation involving heterolytic fission of } \text{CH}_3 - \text{Br} \text{ among the following is:}$ 2 212 Recommended Questions $\text{H}_3\text{C} - \text{Br} \rightarrow \text{CH}_3^+ + \text{Br}^-$, $\text{H}_3\text{C} - \text{Br} \rightarrow \text{CH}_3^+ + \text{Br}^-$... $\text{H}_3\text{C} - \text{Br} \rightarrow \text{CH}_3^+ + \text{Br}^-$ Edit Delete
10854 $\text{The IUPAC name of the above mentioned compound is -}$ 2 212 Recommended Questions $\text{p-Phenyl diphenyl}$, $\text{p-1-biphenyl benzene}$... $\text{Terphenyl}$ Edit Delete
10853 $\text{The IUPAC name of the above-mentioned compound is -}$ 2 212 Recommended Questions $\text{(N-Bromo)-3-methyl-2-oxobutanamide}$, $\text{(N-Bromo)-2-oxo-4-methylbutanamide}$... $\text{(N-Bromo)-3-methyl-2-oxobutanamide}$ Edit Delete
10852 $\text{Incorrectly matched common name with IUPAC name is-}$ 2 212 Recommended Questions $\text{Benzalacetophenone - (E)-1,3-Diphenylprop-2-en-1-one}$, $\text{Glutaric acid - Pentenedioic acid}$... $\text{Glutaric acid - Pentenedioic acid}$ Edit Delete
10851 $\text{The IUPAC name of the above mentioned compound is-}$ 2 212 Recommended Questions $\text{3-Ket-2-methylhex-4-enal}$, $\text{5-Formylhex-2-en-3-one}$... $\text{3-Keto-2-methylhex-4-enal}$ Edit Delete
10850 $\text{The IUPAC name of the above-mentioned compound is:}$ 2 212 Recommended Questions $\text{Pent-1-en-3-yne}$, $\text{Pent-1-ene-4-yne}$... $\text{Pent-1-en-4-yne}$ Edit Delete
10849 $\text{The IUPAC name of the above mentioned compound is -}$ 2 212 Recommended Questions $\text{Cyclohexylidenemethanone}$, $\text{Cyclohexylidemethanone}$... $\text{Cyclohexylidenemethanone}$ Edit Delete
10848 $\text{The IUPAC name of the above mentioned compound is -}$ 2 212 Recommended Questions $\text{1,2,3-Tricyanopropane}$, $\text{Propane-1,2,3-tricarbonitrile}$... $\text{Propane-1,2,3-tricarbonitrile}$ Edit Delete
10847 $\text{The IUPAC name of the above mentioned compound is -}$ 2 212 Recommended Questions $\text{Cyclohexylidenemethanone}$, $\text{Cyclohexylidemethanone}$... $\text{Cyclohexylidenemethanone}$ Edit Delete
10846 $\text{The IUPAC name of the above mentioned compound is -}$ 2 212 Recommended Questions $\text{3,3-Diethyl-4-methyl-5-(methylethyl)octane}$, $\text{3,3-Diethyl-5-isopropyl-4-methyloctane}$... $\text{3,3-Diethyl-4-methyl-5-(methylethyl)octane}$ Edit Delete
10845 $\text{The IUPAC name of } \text{CH}_3\text{CH}=\text{CHC}\equiv\text{CH} \text{ is:}$ 2 212 Recommended Questions $\text{Pent - 3 - en - 1 - yne}$, $\text{Pent - 2 - en - 4 - yne}$... $\text{Pent - 3 - en - 1 - yne}$ Edit Delete
10844 $\text{The correct IUPAC name, among the following, is:}$ 2 212 Recommended Questions $\text{Prop-3-yn-1-ol}$, $\text{But-4-ol-4-yne}$... $\text{But-3-yn-1-ol}$ Edit Delete
10843 $\text{The IUPAC name of the above mentioned compound is -}$ 2 212 Recommended Questions $\text{3-Methylcyclobut-1-en-2-ol}$, $\text{4-Methylcyclobut-2-en-1-ol}$... $\text{4-Methylcyclobut-2-en-1-ol}$ Edit Delete
10842 $\text{The IUPAC name of the above mentioned compound is -}$ 2 212 Recommended Questions $\text{3, 4-Dimethylpentanoyl chloride}$, $\text{1-Chloro-1-oxo-2,3-dimethylpentane}$... $\text{2, 3-Dimethylpentanoyl chloride}$ Edit Delete
10841 $\text{The compound with an isopropyl group is-}$ 2 212 Recommended Questions $\text{2,2,3,3-Tetramethylpentane}$, $\text{2,2-Dimethylpentane}$... $\text{2-Methylpentane}$ Edit Delete
10840 $\text{What is the IUPAC name of this compound?}$ 2 212 Recommended Questions $\text{2-Bromo-3-methylbutanoic acid}$, $\text{2-Methyl-3-bromobutanoic acid}$... $\text{3-Bromo-2-methylbutanoic acid}$ Edit Delete
10839 $\text{The IUPAC name of the above-mentioned compound is:}$ 2 212 Recommended Questions $\text{cis-2-Chloro-3-iodo-2-pentene}$, $\text{trans-2-Chloro-3-iodo-2-pentene}$... $\text{trans-2-Chloro-3-iodo-2-pentene}$ Edit Delete
10838 $\text{Arrange H, CH}_3\text{, C}_2\text{H}_5\text{, and C}_3\text{H}_7 \text{ in order of increasing positive inductive effect:}$ 2 212 Recommended Questions $\text{H} < \text{CH}_3 < \text{C}_2\text{H}_5 < \text{C}_3\text{H}_7$, $\text{H} > \text{CH}_3 < \text{C}_2\text{H}_5 > \text{C}_3\text{H}_7$... $\text{H} < \text{CH}_3 < \text{C}_2\text{H}_5 < \text{C}_3\text{H}_7$ Edit Delete
10837 $\text{The IUPAC name of the above mentioned compound is -}$ 2 212 Recommended Questions $\text{Citric acid}$, $\text{3-Hydroxy pentane-1,5-dioic acid}$... $\text{2-Hydroxypropane-1,2,3-tricarboxylic acid}$ Edit Delete
10836 $\text{Which structure corresponds to the IUPAC name 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid?}$ 2 212 Recommended Questions $\text{Structure with ethyl group at position 3, OH at position 2, methyl at position 4, double bond at position 3, triple bond at position 5, and COOH group}$, $\text{Structure with different arrangement of functional groups and carbon chain}$... $\text{Structure with ethyl group at position 3, OH at position 2, methyl at position 4, double bond at position 3, triple bond at position 5, and COOH group}$ Edit Delete
10835 $\text{The correct increasing order of C-C bond length is:}$ 2 212 Recommended Questions $\text{C}_2\text{H}_6 > \text{C}_2\text{H}_4 > \text{C}_6\text{H}_6 > \text{C}_2\text{H}_2$, $\text{C}_2\text{H}_2 < \text{C}_2\text{H}_4 < \text{C}_6\text{H}_6 < \text{C}_2\text{H}_6$... $\text{C}_2\text{H}_2 < \text{C}_2\text{H}_4 < \text{C}_6\text{H}_6 < \text{C}_2\text{H}_6$ Edit Delete
10834 $\text{The maximum number of carbon atoms arranged linearly in the molecule, } \text{CH}_3 - \text{C} \equiv \text{C} - \text{CH} = \text{CH}_2\text{, are -}$ 2 212 Recommended Questions $3$, $4$... $4$ Edit Delete
10833 $\text{The number of } \sigma \text{ and } \pi \text{ bonds in the molecule } \text{C}_6\text{H}_{12} \text{ are:}$ 2 212 Recommended Questions $7 = (\sigma_{C-C}), 11 = (\sigma_{C-H}), \text{ and } 0 = \pi$, $6 = (\sigma_{C-C}), 12 = (\sigma_{C-H}), \text{ and } 0 = \pi$... $6 = (\sigma_{C-C}), 12 = (\sigma_{C-H}), \text{ and } 0 = \pi$ Edit Delete
10832 $\text{The Cl - C - Cl angles in 1,1,2,2-tetrachloroethene and tetrachloromethane will be about :}$ 2 212 Recommended Questions $120^\circ \text{ and } 109.5^\circ$, $90^\circ \text{ and } 109.5^\circ$... $120^\circ \text{ and } 109.5^\circ$ Edit Delete
10831 $\text{The total number of pi-bond electrons in the following structure are:}$ 2 212 Recommended Questions $4$, $8$... $8$ Edit Delete
10830 $\text{The correct order of increasing bond length of C-H, C-O, C-C and C=C is:}$ 2 212 Recommended Questions $\text{C} - \text{C} < \text{C} = \text{C} < \text{C} - \text{O} < \text{C} - \text{H}$, $\text{C} - \text{O} < \text{C} - \text{H} < \text{C} - \text{C} < \text{C} = \text{C}$... $\text{C} - \text{H} < \text{C} = \text{C} < \text{C} - \text{O} < \text{C} - \text{C}$ Edit Delete
10829 $\text{The number of tertiary carbon atoms in tertiary butyl alcohol are-}$ 2 212 Recommended Questions $1$, $2$... $1$ Edit Delete
10828 $\text{The compound that contains only sp}^3 \text{ hybridized carbon atoms is:}$ 2 212 Recommended Questions $\text{HCOOH}$, $(\text{NH}_2)_2\text{CO}$... $(\text{CH}_3)_3\text{COH}$ Edit Delete
10827 $\text{In the organic compound } \text{CH}_2 = \text{CH} - \text{CH}_2 - \text{CH}_2 - \text{C} \equiv \text{CH}\text{, which pair of hybridized orbitals is involved in forming the } \text{C}_2 - \text{C}_3 \text{ bond?}$ 2 212 Recommended Questions $\text{sp} - \text{sp}^2$, $\text{sp} - \text{sp}^3$... $\text{sp}^2 - \text{sp}^3$ Edit Delete
10826 $\text{The enolic form of an acetone contains:}$ 2 212 Recommended Questions $9 \text{ sigma bonds, } 1 \text{ pi bond, and } 2 \text{ lone pairs of electrons}$, $8 \text{ sigma bonds, } 2 \text{ pi bonds, and } 2 \text{ lone pairs of electrons}$... $9 \text{ sigma bonds, } 1 \text{ pi bond, and } 2 \text{ lone pairs of electrons}$ Edit Delete
10825 $\text{The } C - H \text{ bond distance is longer in -}$ 2 212 Recommended Questions $\text{C}_2\text{H}_2$, $\text{C}_2\text{H}_4$... $\text{C}_2\text{H}_6$ Edit Delete
10824 $\text{The cylindrical shape of an alkyne is due to the presence of-}$ 2 212 Recommended Questions $\text{Three sigma C-C bonds}$, $\text{Three } \pi \text{ C-C bonds}$... $\text{One sigma C-C and two } \pi \text{ C-C bonds}$ Edit Delete
10823 $\text{The correct hybridization states of carbon atoms in } \text{C}_6\text{H}_6 \text{ is/are:}$ 2 212 Recommended Questions $\text{sp}^2$, $\text{sp}$... $\text{sp}^2$ Edit Delete
10822 $\text{The enolic form of ethyl acetoacetate is given below. The number of sigma and pi bonds in the enolic form of ethyl acetoacetate are -}$ 2 212 Recommended Questions $18 \text{ sigma bonds and } 2 \text{ pi-bonds}$, $16 \text{ sigma bonds and } 1 \text{ pi-bond}$... $18 \text{ sigma bonds and } 2 \text{ pi-bonds}$ Edit Delete
10821 $\text{The number of primary carbon atoms in the following compound are:}$ 2 212 Recommended Questions $6$, $2$... $6$ Edit Delete
10820 $\text{The number of } \sigma \text{ and } \pi \text{ bonds in the molecule } \text{C}_6\text{H}_6 \text{ are -}$ 2 212 Recommended Questions 1, 2... 3 Edit Delete
10819 $\text{The correct hybridization states of carbon atoms marked as 1,2,3 in the following compound are:}$ $^1\text{CH}_3 - ^2\text{CH} = ^3\text{CH}_2$ 2 212 Recommended Questions $\text{C}_1 = \text{sp}, \text{C}_2 = \text{sp}^3, \text{C}_3 = \text{sp}^2$, $\text{C}_1 = \text{sp}^2, \text{C}_2 = \text{sp}^3, \text{C}_3 = \text{sp}^3$... $\text{C}_1 = \text{sp}^3, \text{C}_2 = \text{sp}^2, \text{C}_3 = \text{sp}^2$ Edit Delete
10818 $\text{CH}_2 = \text{C} = \text{O}$ $\text{The correct hybridization states of carbon atoms in the above compound are}$ 2 212 Recommended Questions $\text{C}_1 = \text{sp}, \text{C}_2 = \text{sp}^3$, $\text{C}_1 = \text{sp}^2, \text{C}_2 = \text{sp}$... $\text{C}_1 = \text{sp}^2, \text{C}_2 = \text{sp}$ Edit Delete
10817 $\text{The number of } \sigma \text{ and } \pi \text{ bonds in the molecule CH}_2\text{Cl}_2 \text{ are -}$ 2 212 Recommended Questions $2 = (\sigma_{C-Cl}), 1 = (\sigma_{C-H}), \text{ and } 1 = \pi$, $2 = (\sigma_{C-Cl}), 2 = (\sigma_{C-H}), \text{ and } 0 = \pi$... $2 = (\sigma_{C-Cl}), 2 = (\sigma_{C-H}), \text{ and } 0 = \pi$ Edit Delete
10816 $\text{The correct hybridization states of carbon atoms in the following compound are -}$ $\text{CH}_2 = \text{CH} - \text{C} \equiv \text{N}$ 2 212 Recommended Questions $\text{C}^1 = \text{sp}, \text{C}^2 = \text{sp}^3, \text{C}^3 = \text{sp}^2$, $\text{C}^1 = \text{sp}^2, \text{C}^2 = \text{sp}^3, \text{C}^3 = \text{sp}^3$... $\text{C}^1 = \text{sp}^2, \text{C}^2 = \text{sp}^2, \text{C}^3 = \text{sp}$ Edit Delete
10815 $\text{Consider two hot bodies, B}_1 \text{ and B}_2 \text{ which have temperatures of 100°C and 80°C respectively at t=0. The temperature of the surroundings is 40°C. The ratio of the respective rates of cooling R}_1 \text{ and R}_2 \text{ of these two bodies at t = 0 will be:}$ 1 110 Recommended Questions $\text{R}_1 : \text{R}_2 = 3 : 2$, $\text{R}_1 : \text{R}_2 = 5 : 4$... $\text{R}_1 : \text{R}_2 = 3 : 2$ Edit Delete
10814 $\text{The temperature of an object is 400°C. The temperature of the surroundings may be assumed to be negligible. What temperature would cause the energy to radiate twice as quickly? (Given, } 2^{\frac{1}{4}} \approx 1.18\text{)}$ 1 110 Recommended Questions $200°\text{C}$, $200 \text{ K}$... $800 \text{ K}$ Edit Delete
10813 $\text{The rate of heat emission from an ideal black body at temperature T is H. What will be the rate of emission of heat by another body of same size at temperature 2T and emissivity 0.25?}$ 1 110 Recommended Questions $16\text{H}$, $4\text{H}$... $4\text{H}$ Edit Delete
10812 $\text{If the temperature of the body is increased from } -73°\text{C to } 327°\text{C, then the ratio of energy emitted per second in both cases is:}$ 1 110 Recommended Questions $1 : 3$, $1 : 81$... $1 : 81$ Edit Delete
10811 $\text{A black body at 200 K is found to emit maximum energy at a wavelength of 14 } \mu\text{m. When its temperature is raised to 1000 K, the wavelength at which maximum energy is emitted will be:}$ 1 110 Recommended Questions $14 \mu\text{m}$, $70 \mu\text{m}$... $2.8 \mu\text{m}$ Edit Delete
10810 $\text{A black body has a maximum wavelength at a temperature of 2000 K. Its corresponding wavelength at temperatures of 3000 K will be:}$ 1 110 Recommended Questions $\frac{3}{2}\lambda_m$, $\frac{2}{3}\lambda_m$... $\frac{2}{3}\lambda_m$ Edit Delete
10809 $\text{According to Wien's law:}$ 1 110 Recommended Questions $\lambda_m T = \text{constant}$, $\frac{\lambda_m}{T} = \text{constant}$... $\lambda_m T = \text{constant}$ Edit Delete
10808 $\text{On a clear sunny day, an object at temperature T is placed on the top of a high mountain. An identical object at the same temperature is placed at the foot of the mountain. If both the objects are exposed to sun-rays for two hours in an identical manner, the object placed on the top of a mountain will register a temperature:}$ 1 110 Recommended Questions $\text{higher than the object at the foot.}$, $\text{lower than the object at the foot.}$... $\text{lower than the object at the foot.}$ Edit Delete
10807 $\text{Which of the following is closest to an ideal black body?}$ 1 110 Recommended Questions $\text{Black lamp}$, $\text{Cavity maintained at a constant temperature}$... $\text{Cavity maintained at a constant temperature}$ Edit Delete
10806 $\text{Taking into account the radiation that a human body emits which of the following statements is true?}$ 1 110 Recommended Questions $\text{The radiation is emitted only during the day.}$, $\text{The radiation is emitted during the summers and absorbed during the winters.}$... $\text{The radiation emitted is in the infra-red region.}$ Edit Delete
10805 $\text{While measuring the thermal conductivity of a liquid, we keep the upper part hot and the lower part cool, so that:}$ 1 110 Recommended Questions $\text{convection may be stopped}$, $\text{radiation may be stopped}$... $\text{convection may be stopped}$ Edit Delete
10804 $\text{Air is a bad conductor of heat or partly conducts heat. Still, a vacuum is to be placed between the walls of the thermos flask because:}$ 1 110 Recommended Questions $\text{it is difficult to fill the air between the walls of the thermos flask.}$, $\text{due to more pressure of air, the thermos can get cracks.}$... $\text{by convection, heat can flow through the air.}$ Edit Delete
10803 $\text{Given below are two statements:}$ $\text{Assertion (A): The coefficient of thermal conductivity of a metal rod is a function of the length of the rod.}$ $\text{Reason (R): Longer is the rod, the larger is the amount of heat conducted.}$ 1 110 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are False.}$ Edit Delete
10802 $\text{The temperature of the two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity K and 2K and thickness x and 4x, respectively are } T_2 \text{ and } T_1 (T_2 > T_1). \text{ The rate of heat transfer through the slab, in a steady state is } \left(\frac{A(T_2-T_1)K}{x}\right)f, \text{ with f which equals to:}$ 1 110 Recommended Questions $1$, $\frac{1}{2}$... $\frac{1}{3}$ Edit Delete
10801 \text{The temperature of the hot and cold ends of a 20 cm long rod in a thermal steady state is at } 100°\text{C and } 20°\text{C respectively. The temperature at the centre of the rod will be:} 1 110 Recommended Questions $50°\text{C}$, $60°\text{C}$... $60°\text{C}$ Edit Delete
10800 $\text{Mud houses are cooler in the summer and warmer in the winter because:}$ 1 110 Recommended Questions $\text{The mud is a superconductor of heat.}$, $\text{The mud is a good conductor of heat.}$... $\text{The mud is a bad conductor of heat.}$ Edit Delete
10799 $\text{Two taps, one at } 10°\text{C and the other at } 100°\text{C, both supply water. How much hot water must be mixed with the cold water so that we get 20 kg of water at } 35°\text{C?}$ 1 110 Recommended Questions $7.2 \text{ kg}$, $10 \text{ kg}$... $5.6 \text{ kg}$ Edit Delete
10798 $\text{When the pressure on the surface of water is increased, its boiling point will:}$ 1 110 Recommended Questions $\text{Decrease}$, $\text{Increase}$... $\text{Increase}$ Edit Delete
10797 $\text{Steam at } 100°\text{C is injected into 20 g of } 10°\text{C water. When water acquires a temperature of } 80°\text{C, the mass of water present will be:}$ $\text{(Take specific heat of water } = 1 \text{ cal g}^{-1} °\text{C}^{-1} \text{ and latent heat of steam } = 540 \text{ cal g}^{-1}\text{)}$ 1 110 Recommended Questions $24 \text{ g}$, $31.5 \text{ g}$... $22.5 \text{ g}$ Edit Delete
10796 $\text{One kilogram of ice at } 0^\circ\text{C is mixed with one kilogram of water at } 80^\circ\text{C. The final temperature of the mixture will be: (Take: Specific heat of water } = 4200 \text{ J kg}^{-1}\text{K}^{-1}\text{, latent heat of ice} = 336 \text{ kJ kg}^{-1}\text{)}$ 1 110 Recommended Questions $0^\circ\text{C}$, $50^\circ\text{C}$... $0^\circ\text{C}$ Edit Delete
10795 $\text{A constrained steel rod of length } l\text{, area of cross-section } A\text{, Young's modulus } Y \text{ and coefficient of linear expansion } \alpha \text{ is heated through } t°\text{C. The work that can be performed by the rod when heated is:}$ 1 110 Recommended Questions $(YA\alpha t)(l\alpha t)$, $\frac{1}{2}(YA\alpha t)(l\alpha t)$... $\frac{1}{2}(YA\alpha t)(l\alpha t)$ Edit Delete
10794 $\text{A pendulum clock runs faster by 5 s per day at } 20^\circ\text{C and goes slow by 10 s per day at } 35^\circ\text{C. It shows the correct time at a temperature of:}$ 1 110 Recommended Questions $27.5^\circ\text{C}$, $25^\circ\text{C}$... $25^\circ\text{C}$ Edit Delete
10793 $\text{The value of the coefficient of volume expansion of glycerin is } 5 \times 10^{-4} \text{ K}^{-1}\text{. The fractional change in the density of glycerin for a temperature increase of } 40°\text{C will be:}$ 1 110 Recommended Questions $0.015$, $0.020$... $0.020$ Edit Delete
10792 $\text{Two absolute scales } A \text{ and } B, \text{ have triple points of water defined to be } 200A \text{ and } 350B. \text{ The relationship between } T_A \text{ and } T_B\text{:}$ 1 110 Recommended Questions $T_A = \frac{5}{7}T_B$, $T_A = \frac{4}{7}T_B$... $T_A = \frac{4}{7}T_B$ Edit Delete
10791 $\text{A temperature of } 100°\text{F (Fahrenheit scale) is equal to } T \text{ K (Kelvin scale). The value of } T \text{ is:}$ 1 110 Recommended Questions $310.9$, $37.8$... $310.9$ Edit Delete
10790 $\text{A body cools down from } 80^\circ\text{C to } 70^\circ\text{C in 5 minutes. The temperature of the same body will fall from } 70^\circ\text{C to } 60^\circ\text{C in:}$ 1 110 Recommended Questions $\text{less than 5 minutes.}$, $\text{equal to 5 minutes.}$... $\text{more than 5 minutes.}$ Edit Delete
10789 $\text{Hot coffee in a mug cools from } 90°\text{C to } 70°\text{C in } 4.8 \text{ minutes. The room temperature is } 20°\text{C. Applying Newton's law of cooling, the time needed to cool it further by } 10°\text{C should be nearly:}$ 1 110 Recommended Questions $4.2 \text{ minute}$, $3.8 \text{ minute}$... $3.2 \text{ minute}$ Edit Delete
10788 $\text{A body cools from a temperature of } 3T \text{ to } 2T \text{ in 10 minutes. The room temperature is } T\text{. Assuming that Newton's law of cooling is applicable, the temperature of the body at the end of the next 10 minutes will be:}$ 1 110 Recommended Questions $\frac{7}{4}T$, $\frac{3}{2}T$... $\frac{3}{2}T$ Edit Delete
10787 \text{A certain quantity of water cools from 70°C to 60°C in the first 5 minutes and to 54°C in the next 5 minutes. The temperature of the surroundings will be:} 1 110 Recommended Questions $45°\text{C}$, $20°\text{C}$... $45°\text{C}$ Edit Delete
10786 $\text{A pan filled with hot food cools in 2 minutes from } 94°\text{C to } 86°\text{C when the room temperature is } 20°\text{C. How long will it take to cool from } 71°\text{C to } 69°\text{C?}$ 1 110 Recommended Questions $50 \text{ s}$, $52 \text{ s}$... $42 \text{ s}$ Edit Delete
10785 $\text{A block of metal is heated to a temperature much higher than the room temperature and allowed to cool in a room free from air currents. Which of the following curves correctly represents the rate of cooling?}$ 1 110 Recommended Questions $\text{Graph 1: Temperature vs Time showing a curved decrease starting high and leveling off}$, $\text{Graph 2: Temperature vs Time showing an exponential decay curve}$... $\text{Graph 2: Temperature vs Time showing an exponential decay curve}$ Edit Delete
10784 $\text{The temperature of a body falls from } 50°\text{C to } 40°\text{C in 10 minutes. If the temperature of the surroundings is } 20°\text{C, then the temperature of the body after another 10 minutes will be:}$ 1 110 Recommended Questions $36.6°\text{C}$, $33.3°\text{C}$... $33.3°\text{C}$ Edit Delete
10783 \text{Which of the following graphs correctly represents the relation between } \ln E \text{ and } \ln T \text{ where } E \text{ is the amount of radiation emitted per unit time from a unit area of a body and } T \text{ is the absolute temperature?} \text{(Take } \sigma = 5.67 \times 10^{-8} \text{ W m}^{-2}\text{K}^{-4} \text{ and } 0 < \epsilon < 1\text{)} 1 110 Recommended Questions $\text{Graph 1: } \ln E \text{ vs } \ln T \text{ showing a straight line with positive slope passing through negative y-intercept}$, $\text{Graph 2: } \ln E \text{ vs } \ln T \text{ showing a curved line}$... $\text{Both 1 and 3}$ Edit Delete
10782 \text{If the sun's surface radiates heat at } 6.3 \times 10^7 \text{ Wm}^{-2} \text{ then the temperature of the sun, assuming it to be a black body, will be: } (\sigma = 5.7 \times 10^{-8} \text{ Wm}^{-2}\text{K}^{-4}) 1 110 Recommended Questions $5.8 \times 10^3 \text{ K}$, $8.5 \times 10^3 \text{ K}$... $5.8 \times 10^3 \text{ K}$ Edit Delete
10781 $\text{A spherical black body with a radius of 12 cm radiates 450-watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watts would be:}$ 1 110 Recommended Questions $225$, $450$... $1800$ Edit Delete
10780 $\text{If the radius of a star is } R \text{ and it acts as a black body, what would be the temperature of the star at which the rate of energy production is } Q?$ $(\sigma \text{ is Stefan-Boltzmann constant})$ 1 110 Recommended Questions $\frac{Q}{4\pi R^2 \sigma}$, $\left(\frac{Q}{4\pi R^2 \sigma}\right)^{\frac{1}{2}}$... $\left(\frac{Q}{4\pi R^2 \sigma}\right)^{\frac{1}{4}}$ Edit Delete
10779 \text{The wavelength corresponding to maximum emission of radiation from the sun is } \lambda_{\max} = 4753 \text{ Å (close to the wavelength of violet colour of visible region).} \text{Hence if temperature is doubled, } \lambda_m \text{ is decreased } \left(\lambda_m \propto \frac{1}{T}\right) \text{ i.e. mostly ultraviolet radiations emits.} \text{If the temperature of the sun becomes twice its present temperature, then:} 1 110 Recommended Questions $\text{Radiated energy would be predominantly in the infrared range.}$, $\text{Radiated energy would be primarily in the ultraviolet range.}$... $\text{Radiated energy would be primarily in the ultraviolet range.}$ Edit Delete
10778 $\text{A black body is at a temperature of 5760 K. The energy of radiation emitted by the body at a wavelength of 250 nm is } U_1\text{, at a wavelength of 500 nm is } U_2 \text{ and that at 1000 nm is } U_3\text{. Given Wien's constant } b = 2.88 \times 10^6 \text{ nm-K, which of the following is correct?}$ 1 110 Recommended Questions $U_3 = 0$, $U_1 > U_2$... $U_2 > U_1$ Edit Delete
10777 $\text{The energy distribution E with the wavelength } (\lambda) \text{ for the black body radiation at temperature T Kelvin is shown in the figure. As the temperature is increased the maxima will:}$ 1 110 Recommended Questions $\text{Shift towards left and become higher}$, $\text{Rise high but will not shift}$... $\text{Shift towards left and become higher}$ Edit Delete
10776 $\text{The plots of intensity versus wavelength for three black bodies at temperatures } T_1, T_2 \text{ and } T_3 \text{ respectively are as shown. Their temperatures are such that:}$ 1 110 Recommended Questions $T_1 > T_2 > T_3$, $T_1 > T_3 > T_2$... $T_1 > T_3 > T_2$ Edit Delete
10775 $\text{Three stars A, B, and C have surface temperatures } T_A, T_B \text{ and } T_C \text{ respectively. Star A appears bluish, star B appears reddish and star C yellowish. Hence:}$ 1 110 Recommended Questions $T_A > T_B > T_C$, $T_B > T_C > T_A$... $T_A > T_C > T_B$ Edit Delete
10774 $\text{If } \lambda_m \text{ is the wavelength, corresponding to which the radiant intensity of a black body is at its maximum and its absolute temperature is } T\text{, then which of the following graphs correctly represents the variation of } T\text{?}$ 1 110 Recommended Questions $\text{Linear relationship: } \lambda_m \text{ increases linearly with } T$, $\text{Exponential relationship: } \lambda_m \text{ increases exponentially with } T \text{ and levels off}$... $\text{Inverse relationship: } \lambda_m \text{ decreases as } T \text{ increases}$ Edit Delete
10773 $\text{A piece of iron is heated in a flame. If it becomes dull red first, then becomes reddish yellow, and finally turns to white hot, the correct explanation for the above observation is possible by using:}$ 1 110 Recommended Questions $\text{Stefan's law}$, $\text{Wien's displacement law}$... $\text{Wien's displacement law}$ Edit Delete
10772 $\text{What is the ratio of the temperatures } T_1 \text{ and } T_2 \text{ in the following graph?}$ 1 110 Recommended Questions $3 : 2$, $2 : 1$... $3 : 2$ Edit Delete
10771 $\text{Given below are two statements:}$ $\text{Assertion (A): While measuring the thermal conductivity of liquid experimentally, the upper layer is kept hot and the lower layer is kept cold.}$ $\text{Reason (R): This avoids the heating of liquid by convection.}$ 1 110 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$ Edit Delete
10770 $\text{Heat is flowing through a conductor of length } l \text{ from } x = 0 \text{ to } x = L. \text{ If its thermal resistance per unit length is uniform, which of the subsequent graphs is accurate?}$ 1 110 Recommended Questions $\text{Graph showing linear increase in temperature with position}$, $\text{Graph showing linear increase in temperature with position (steeper slope)}$... $\text{Graph showing linear decrease in temperature with position}$ Edit Delete
10769 $\text{One end of a copper rod of uniform cross-section and of length 3.1 m is kept in contact with ice, and the other end with water at } 100°\text{C. At what point along its length should a temperature of } 200°\text{C } \text{be maintained so that in steady-state, the mass of ice melting be equal to that of the steam produced in the same interval time? (Assume that the whole system is insulated from the surroundings. Latent heat of fusion of ice and vaporisation of water are 80 cal/gm and 540 cal/gm respectively)}$ 1 110 Recommended Questions $21.3 \text{ cm from } 100°\text{C end}$, $40 \text{ cm from } 0°\text{C end}$... $21.3 \text{ cm from } 100°\text{C end}$ Edit Delete
10768 $\text{Two rods of the same length and the same area of the cross-section are joined. The temperature of the two ends is shown in the figure.}$ $\text{As we move along the rod, temperature varies as shown in the following figure.}$ $\text{Then:}$ 1 110 Recommended Questions $K_1 > K_2$, $K_1 = K_2$... $K_1 > K_2$ Edit Delete
10767 $\text{A ring consisting of two parts, } ADB \text{ and } ACB, \text{ of the same heat conductivity } k, \text{ conducts an amount of heat } H. \text{ The } ADB \text{ part is now replaced with another metal, keeping the temperatures } T_1 \text{ and } T_2 \text{ constant. The amount of heat carried rises to } 2H. \text{ What should be the heat conductivity of the new } ADB \text{ part?}$ $\left(\frac{ACB}{ADB} = 3\right)$ 1 110 Recommended Questions $\frac{7}{3}k$, $2k$... $\frac{7}{3}k$ Edit Delete
10766 $\text{Three rods of identical area of cross-section and made from the same metal form the sides of an isosceles triangle ABC, which is right-angled at B. The points A and B are maintained at temperatures T and } \sqrt{2}T \text{ respectively. In the steady state, the temperature of point C is } T_C. \text{ Assuming that only heat conduction takes place, } \frac{T_C}{T} \text{ is equal to:}$ 1 110 Recommended Questions $\frac{1}{\left(\sqrt{2}+1\right)}$, $\frac{3}{\left(\sqrt{2}+1\right)}$... $\frac{3}{\left(\sqrt{2}+1\right)}$ Edit Delete
10765 $\text{A slab of stone with an area } 0.36 \text{ m}^2 \text{ and thickness of } 0.1 \text{ m is exposed on the lower surface to steam at } 100^\circ\text{C. A block of ice at } 0^\circ\text{C rests on the upper surface of the slab. In one hour } 4.8 \text{ kg of ice is melted. The thermal conductivity of the slab will be:}$ $\text{(Given latent heat of fusion of ice } = 3.36 \times 10^5 \text{ JKg}^{-1})$ 1 110 Recommended Questions $1.29 \text{ J/m/s/}^\circ\text{C}$, $2.05 \text{ J/m/s/}^\circ\text{C}$... $1.24 \text{ J/m/s/}^\circ\text{C}$ Edit Delete
10764 $\text{A wall is made up of two layers, A and B. The thickness of the two layers is the same, but the materials are different. The thermal conductivity of A is double that of B. If in thermal equilibrium, the temperature difference between the two ends is } 36^\circ\text{C, then the difference in temperature between the two surfaces of A will be:}$ 1 110 Recommended Questions $6^\circ\text{C}$, $12^\circ\text{C}$... $12^\circ\text{C}$ Edit Delete
10763 $\text{One likes to sit in the sunshine in the winter season, because:}$ 1 110 Recommended Questions $\text{the air around the body is hot, and the body absorbs heat from it.}$, $\text{we get energy from the sun.}$... $\text{we get energy from the sun.}$ Edit Delete
10762 $\text{Two rods (one semi-circular and the other straight) of the same material and of the same cross-sectional area are joined as shown in the figure. The points A and B are maintained at different temperatures. The ratio of the heat transferred through a cross-section of a semi-circular rod to the heat transferred through a cross-section of a straight rod at any given point in time will be:}$ 1 110 Recommended Questions $2 : \pi$, $1 : 2$... $2 : \pi$ Edit Delete
10761 $\text{The thermal conductivities of two identical rods are } k \text{ and } 2k, \text{ respectively. If they are joined in parallel, then the ratio of heat flowing through them per second will be:}$ 1 110 Recommended Questions $1:2$, $2:1$... $1:2$ Edit Delete
10760 $\text{Consider a compound slab consisting of two different materials having equal thicknesses and thermal conductivities } K \text{ and } 2K, \text{ respectively. The equivalent thermal conductivity of the slab will be:}$ 1 110 Recommended Questions $\frac{2}{6}K$, $\sqrt{2K}$... $\frac{4}{3}K$ Edit Delete
10759 $\text{Three rods made of the same material, having the same cross-sectional area but different lengths 10 cm, 20 cm and 30 cm are joined as shown. The temperature of the junction will be:}$ 1 110 Recommended Questions $10.8^\circ\text{C}$, $14.6^\circ\text{C}$... $16.4^\circ\text{C}$ Edit Delete
10758 $\text{A cylindrical rod has temperatures } T_1 \text{ and } T_2 \text{ at its ends. The rate of flow of heat is } Q_1 \text{ cal/sec. If all the linear dimensions are doubled while keeping the temperature constant, then the rate of flow of heat } Q_2 \text{ will be:}$ 1 110 Recommended Questions $4Q_1$, $2Q_1$... $2Q_1$ Edit Delete
10757 $\text{Two slabs } A \text{ and } B \text{ of equal surface area are placed one over the other such that their surfaces are completely in contact. The thickness of slab } A \text{ is twice that of } B. \text{ The coefficient of thermal conductivity of slab } A \text{ is twice that of } B. \text{ The first surface of slab } A \text{ is maintained at } 100^\circ\text{C}, \text{ while the second surface of slab } B \text{ is maintained at } 25^\circ\text{C}. \text{ The temperature at the common surface will be:}$ 1 110 Recommended Questions $62.5^\circ\text{C}$, $45^\circ\text{C}$... $62.5^\circ\text{C}$ Edit Delete
10756 $\text{The heat passing through the cross-section of a conductor, varies with time } t \text{ as } Q(t) = \alpha t - \beta t^2 + \gamma t^3 \text{ (} \alpha, \beta \text{ and } \gamma \text{ are positive constants). The minimum heat current through the conductor is:}$ 1 110 Recommended Questions $\alpha - \frac{\beta^2}{2\gamma}$, $\alpha - \frac{\beta^2}{3\gamma}$... $\alpha - \frac{\beta^2}{3\gamma}$ Edit Delete
10755 $\text{Four rods of the same material with different radii } r \text{ and length } l \text{ are used to connect two heat reservoirs at different temperatures. In which of the following cases is the heat conduction fastest?}$ 1 110 Recommended Questions $r = \frac{1}{3} \text{ cm}, l = \frac{1}{9} \text{ cm}$, $r = 3 \text{ cm}, l = 9 \text{ cm}$... $r = 4 \text{ cm}, l = 8 \text{ cm}$ Edit Delete
10754 $\text{Two identical plates of different metals are joined to form a single plate whose thickness is double the thickness of each plate. If the coefficients of conductivity of each plate are 2 and 3 respectively, then the conductivity of the composite plate will be:}$ 1 110 Recommended Questions $5$, $2.4$... $2.4$ Edit Delete
10753 $\text{When two ends of a rod wrapped with cotton are maintained at different temperatures and, after some time, every point of the rod attains a constant temperature, then:}$ 1 110 Recommended Questions $\text{conduction of heat at different points of the rod stops because the temperature is not increasing}$, $\text{the rod is a bad conductor of heat}$... $\text{each point of the rod is giving heat to its neighbour at the same rate at which it is receiving heat}$ Edit Delete
10752 $\text{Two rods A and B of different materials having the same cross-sectional area are welded together as shown in the figure. Their thermal conductivities are } K_1 \text{ and } K_2. \text{ The thermal conductivity of the composite rod will be:}$ 1 110 Recommended Questions $\frac{K_1 + K_2}{2}$, $\frac{3(K_1 + K_2)}{2}$... $\frac{K_1 + K_2}{2}$ Edit Delete
10751 $\text{Two conducting slabs of heat conductivity } K_1 \text{ and } K_2 \text{ are joined as shown in figure. If the temperature at the ends of the slabs are } \theta_1 \text{ and } \theta_2 \text{ (}\theta_1 > \theta_2\text{), then the final temperature (}\theta\text{)}_{m} \text{ of the junction will be:}$ 1 110 Recommended Questions $\frac{K_1\theta_1 + K_2\theta_2}{K_1 + K_2}$, $\frac{K_1\theta_2 + K_2\theta_1}{K_1 + K_2}$... $\frac{K_1\theta_1 + K_2\theta_2}{K_1 + K_2}$ Edit Delete
10750 $\text{Three rods made of the same material and having the same cross-section have been joined as shown in the figure. Each rod has the same length. The left and right ends are kept at } 0°\text{C and } 90°\text{C, respectively. The temperature at the junction of the three rods will be:}$ 1 110 Recommended Questions $45°\text{C}$, $60°\text{C}$... $60°\text{C}$ Edit Delete
10749 $\text{Two rods P and Q of equal length and having cross-sections } A_P \text{ and } A_Q \text{ respectively, have the same temperature difference across their ends. If } k_P \text{ and } k_Q \text{ are their thermal conductivities, then the condition for their equal rate of conduction of heat will be:}$ 1 110 Recommended Questions $k_P A_P = k_Q A_Q$, $\frac{\sqrt{k_P}}{A_P} = \frac{\sqrt{k_Q}}{A_Q}$... $k_P A_P = k_Q A_Q$ Edit Delete
10748 $\text{The two ends of a metal rod are maintained at temperatures } 100°\text{C and } 110°\text{C. The rate of heat flow in the rod is found to be } 4.0 \text{ J/s. If the ends are maintained at temperatures } 200°\text{C and } 210°\text{C, the rate of heat flow will be:}$ 1 110 Recommended Questions $44.0 \text{ J/s}$, $16.8 \text{ J/s}$... $4.0 \text{ J/s}$ Edit Delete
10747 $\text{From the given heat and temperature graph of a substance, choose the correct statement:}$ 1 110 Recommended Questions $\text{The latent heat of fusion is greater than the latent heat of vaporization.}$, $\text{The latent heat of vaporization is greater than the latent heat of fusion.}$... $\text{The specific heat in a solid state is more than the specific heat in a liquid state.}$ Edit Delete
10746 $\text{If the same amount of heat is supplied to two spheres of the same material having the same radius (one is hollow and the other is solid), then:}$ 1 110 Recommended Questions $\text{the expansion in hollow is greater than the expansion in solid}$, $\text{the expansion in hollow is the same as that in solid}$... $\text{the expansion in hollow is greater than the expansion in solid}$ Edit Delete
10745 $\text{A geyser heats water flowing at a rate of 3.0 litres per minute from 27°C to 77°C. If the geyser operates on a gas burner and its heat of combustion is } 4.0 \times 10^4 \text{ J/g, then what is the rate of combustion of fuel nearly?}$ 1 110 Recommended Questions $24 \text{ g/min}$, $12 \text{ g/min}$... $16 \text{ g/min}$ Edit Delete
10744 $\text{50 g of ice at } 0°\text{C is dropped in a calorimeter of negligible heat capacity containing 50 g of water at } 100°\text{C, then the final temperature } (T_m) \text{ of the mixture will be: (neglect the heat loss)}$ 1 110 Recommended Questions $10°\text{C}$, $\text{Below } 0°\text{C}$... $10°\text{C}$ Edit Delete
10743 $\text{Some water at } 0°\text{C is placed in a large insulated enclosure (vessel). The water vapour formed is pumped out continuously. What fraction of the water will eventually freeze, if the latent heat of vaporization is seven times the latent heat of fusion?}$ 1 110 Recommended Questions $\frac{7}{8}$, $\frac{8}{7}$... $\frac{7}{8}$ Edit Delete
10742 $\text{In an experiment on the specific heat of a metal, a 0.20 kg block of the metal at 150°C is dropped in a copper calorimeter (of water equivalent of 0.025 kg) containing 150 cm}^3 \text{ of water at 27°C. The final temperature is 40°C. The specific heat of the metal will be:}$ $\text{(Heat losses to the surroundings are negligible)}$ 1 110 Recommended Questions $0.40 \text{ Jg}^{-1}\text{K}^{-1}$, $0.43 \text{ Jg}^{-1}\text{K}^{-1}$... $0.43 \text{ Jg}^{-1}\text{K}^{-1}$ Edit Delete
10741 $\text{Two identical bodies are made of a material whose heat capacity increases with temperature. One of these is at } 100°\text{C, while the other one is at } 0°\text{C. If the two bodies are brought into contact, then assuming no heat loss, the final common temperature will be:}$ 1 110 Recommended Questions $50°\text{C}$, $\text{more than } 50°\text{C}$... 2 Edit Delete
10740 $\text{A substance is in solid form at 0°C. The amount of heat added to this substance and its temperature are plotted in the following graph. If the relative specific heat capacity of the solid substance is 0.5, from the graph, the specific latent heat of the melting process is:}$ $\text{(Specific heat capacity of water = 1000 cal kg}^{-1} \text{K}^{-1}\text{)}$ 1 110 Recommended Questions $60000 \text{ cal kg}^{-1}$, $40000 \text{ cal kg}^{-1}$... $40000 \text{ cal kg}^{-1}$ Edit Delete
10739 $150\text{ g of ice at } 0°\text{C is mixed with } 100\text{ g of water at a temperature of } 80°\text{C. The latent heat of ice is } 80\text{ cal/g and the specific heat of water is } 1\text{ cal/g°C. Assuming no heat loss to the environment, the amount of ice that does not melt is:}$ 1 110 Recommended Questions $100\text{ g}$, $0$... $50\text{ g}$ Edit Delete
10738 $\text{5 g of water at 30°C and 5 g of ice at -20°C are mixed together in a calorimeter. The water equivalent of the calorimeter is negligible, and the specific heat and latent heat of ice are 0.5 cal/g°C and 80 cal/g, respectively. The final temperature of the mixture is:}$ 1 110 Recommended Questions $0°\text{C}$, $-8°\text{C}$... $0°\text{C}$ Edit Delete
10737 $\text{A piece of ice falls from a height } h \text{ so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice, and all energy of ice gets converted into heat during its fall. The value of } h \text{ is:}$ $\text{(Latent heat of ice is } 3.4 \times 10^5 \text{ J/kg and } g = 10 \text{ N/kg)}$ 1 110 Recommended Questions $544 \text{ km}$, $136 \text{ km}$... $136 \text{ km}$ Edit Delete
10736 $\text{Liquid oxygen at 50 K is heated up to 300 K at a constant pressure of 1 atm. The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?}$ 1 110 Recommended Questions $\text{Graph showing temperature increase, then flat horizontal line, then further increase}$, $\text{Graph showing gradual curved increase in temperature}$... $\text{Graph showing temperature increase, then flat horizontal line, then further increase}$ Edit Delete
10735 $\text{A brass wire 1.8 m long at 27°C is held taut with a little tension between two rigid supports. If the wire is cooled to a temperature of -39°C, what is the tension created in a wire with a diameter of 2.0 mm?}$ $\text{(coefficient of linear expansion of brass = } 2.0 \times 10^{-5} \text{ K}^{-1}\text{, Young's modulus of brass = } 0.91 \times 10^{11} \text{ Pa )}$ 1 110 Recommended Questions $3.8 \times 10^3 \text{ N}$, $3.8 \times 10^2 \text{ N}$... $3.8 \times 10^2 \text{ N}$ Edit Delete
10734 $\text{The pressure applied from all directions on a cube is } P. \text{ The volume elasticity of the cube is } \beta \text{ and the coefficient of volume expansion is } \alpha. \text{ How much should its temperature be raised to maintain the original volume?}$ 1 110 Recommended Questions $\frac{P}{\alpha\beta}$, $\frac{P\alpha}{\beta}$... 2 Edit Delete
10733 $\text{The temperature of a wire of length 1 m and an area of cross-section } 1 \text{ cm}^2 \text{ is increased from 0°C to 100°C. If the rod is not allowed to increase in length, the force required will be:}$ $(\alpha = 10^{-5}/°\text{C and } Y = 10^{11} \text{ N/m}^2)$ 1 110 Recommended Questions $10^3 \text{ N}$, $10^4 \text{ N}$... 2 Edit Delete
10732 $\text{A metal bar of length } L \text{ and area of cross-section } A \text{ is clamped between two rigid supports. For the material of the rod, it's Young's modulus is } Y \text{ and the coefficient of linear expansion is } \alpha. \text{ If the temperature of the rod is increased by } \Delta t°C, \text{ the force exerted by the rod on the supports will be:}$ 1 110 Recommended Questions $YAL\Delta t$, $YA\alpha\Delta t$... $YA\alpha\Delta t$ Edit Delete
10731 $\text{The diagram shows a bimetallic strip used as a thermostat in a circuit. Copper expands more than Invar for the same temperature rise.}$ $\text{What will be switched on when the bimetallic strip becomes hot?}$ 1 110 Recommended Questions $\text{bell only}$, $\text{lamp and bell only}$... $\text{lamp and bell only}$ Edit Delete
10730 \text{A large steel wheel is to be fitted onto a shaft of the same material. At 27°C, the outer diameter of the shaft is 8.70 cm and the wheel's central hole has a diameter of 8.69 cm. The shaft is cooled using 'dry ice'. At what temperature of the shaft does the wheel slip on the shaft?} \text{(Assume the coefficient of linear expansion of the steel to be constant over the required temperature range and } \alpha_{\text{steel}} = 1.20 \times 10^{-5} \text{ K}^{-1}\text{)} 1 110 Recommended Questions $\text{68°C}$, $\text{-70°C}$... 3 Edit Delete
10729 $\text{A bimetallic strip is shown in the figure. On cooling, which shape will it attain if } \alpha_{\text{brass}} > \alpha_{\text{steel}} \text{?}$ 1 110 Recommended Questions $\text{Option 1 (straight strip)}$, $\text{Option 2 (curved with brass on outside)}$... $\text{Option 3 (curved with steel on outside)}$ Edit Delete
10728 $\text{Two rods, one made of aluminium and the other made of steel, having initial lengths } l_1 \text{ and } l_2 \text{ are connected together to form a single rod of length } l_1 + l_2. \text{ The coefficient of linear expansion for aluminium and steel are } \alpha_a \text{ and } \alpha_s \text{ respectively. If the length of each rod increases by the same amount when their temperature is raised by } t°C, \text{ then the ratio } \frac{l_1}{l_1+l_2} \text{ is:}$ 1 110 Recommended Questions $\frac{\alpha_s}{\alpha_a}$, $\frac{\alpha_a}{\alpha_s}$... 4 Edit Delete
10727 $\text{If two rods of length L and 2L having coefficients of linear expansion } \alpha \text{ and } 2\alpha \text{ respectively are connected so that their total length becomes 3L, the average coefficient of linear expansion of the composition of rods equals:}$ 1 110 Recommended Questions $\frac{3}{2}\alpha$, $\frac{5}{2}\alpha$... $\frac{5}{3}\alpha$ Edit Delete
10726 $\text{When a uniform rod is heated, which of its following properties will increase as a result of it?}$ 1 110 Recommended Questions $\text{mass}$, $\text{weight}$... $\text{moment of inertia}$ Edit Delete
10725 $\text{A copper rod of 88 cm and an aluminium rod of an unknown length have an equal increase in their lengths independent of an increase in temperature. The length of the aluminium rod is:}$ $(\alpha_{\text{Cu}} = 1.7 \times 10^{-5} \text{ K}^{-1} \text{ and } \alpha_{\text{Al}} = 2.2 \times 10^{-5} \text{ K}^{-1})$ 1 110 Recommended Questions $68 \text{ cm}$, $6.8 \text{ cm}$... $68 \text{ cm}$ Edit Delete
10724 $\text{The coefficients of linear expansion of brass and steel rods are } \alpha_1 \text{ and } \alpha_2, \text{ lengths of brass and steel rods are } l_1 \text{ and } l_2 \text{ respectively. If } (l_2 - l_1) \text{ is maintained the same at all temperatures, Which one of the following relations holds good?}$ 1 110 Recommended Questions $\alpha_1 l_2^2 = \alpha_2 l_1^2$, $\alpha_1^2 l_2 = \alpha_2^2 l_1$... $\alpha_1 l_2 = \alpha_2 l_1$ Edit Delete
10723 $\text{The triple points of neon and carbon dioxide are 24.57 K and 216.55 K respectively. The value of these temperatures on Fahrenheit scale will be:}$ 1 110 Recommended Questions $-415.44^\circ \text{F}, -69.88^\circ \text{F}$, $-248.58^\circ \text{F}, -56.60^\circ \text{F}$... $-415.44^\circ \text{F}, -69.88^\circ \text{F}$ Edit Delete
10722 $\text{The temperature of a body on the Kelvin scale is found to be } x^{\circ} \text{K. When it is measured by a Fahrenheit thermometer, it is found to be } x^{\circ} \text{F, then the value of } x \text{ is:}$ 1 110 Recommended Questions $40$, $313$... $574.25$ Edit Delete
10721 $\text{If a graph is plotted between the temperature of a body in degrees Celsius (along the y-axis) and Fahrenheit (along the x-axis) at different temperatures, then the slope of the graph will be:}$ 1 110 Recommended Questions $\frac{5}{9}$, $\frac{9}{5}$... $\frac{5}{9}$ Edit Delete
10720 $\text{On a new scale of temperature, which is linear and called the W scale, the freezing and boiling points of water are } 39^{\circ} \text{W and } 239^{\circ} \text{W respectively. What will be the temperature on the new scale corresponding to a temperature of } 39^{\circ} \text{C on the Celsius scale?}$ 1 110 Recommended Questions $78^{\circ} \text{C}$, $117^{\circ} \text{W}$... 2 Edit Delete
10719 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Noble gases have the highest ionization energies in their respective periods.}$ $\text{Reason (R): The outermost sub-shell of noble gases in which the electron enters is completely filled.}$ 2 211 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... $\text{(A) is true but (R) is false.}$ Edit Delete
10718 $\text{XeF}_6 \text{ dissolves in anhydrous HF to give a good conducting solution that contains-}$ 2 211 Recommended Questions $\text{H}^+ \text{ and } \text{XeF}_7^- \text{ ions}$, $\text{HF}_2^- \text{ and } \text{XeF}_5^+ \text{ ions}$... $\text{HF}_2^- \text{ and } \text{XeF}_5^+ \text{ ions}$ Edit Delete
10717 $\text{Which of the following statements about the subsequent reactions is false?}$ $\text{XeF}_6 + \text{H}_2\text{O}(\text{excess}) \rightarrow 'X' + \text{HF}$ $\text{XeF}_6 + 2\text{H}_2\text{O} \rightarrow 'Y' + \text{HF}$ 2 211 Recommended Questions $X' \text{ is explosive}$, $'Y' \text{ is an oxyacid of xenon}$... $'Y' \text{ is an oxyacid of xenon}$ Edit Delete
10716 $\text{Which of the following statements is false?}$ 2 211 Recommended Questions $\text{He is used in gas-cooled nuclear reactors}$, $\text{He is used as a cryogenic agent for carrying out experiments at low temperature}$... $\text{He is used to fill gas balloons instead of H}_2 \text{ because it is lighter and non-inflammable.}$ Edit Delete
10715 $\text{False statement regarding PCl}_5 \text{ is:}$ 2 211 Recommended Questions $\text{PCl}_5 \text{ molecule is non-reactive.}$, $\text{Three equatorial P-Cl bonds make an angle of 120° with each other.}$... $\text{PCl}_5 \text{ molecule is non-reactive.}$ Edit Delete
10714 $\text{Which of the following gases is the easiest to liquefy?}$ 2 211 Recommended Questions $\text{Ar}$, $\text{Ne}$... $\text{Xe}$ Edit Delete
10713 $\text{Choose the incorrect statement among the following regarding noble gases:}$ 2 211 Recommended Questions $\text{Noble gases have weak dispersion forces.}$, $\text{Noble gases have large positive values of electron gain enthalpy.}$... $\text{Noble gases have very high melting and boiling points.}$ Edit Delete
10712 $\text{Which of the following statements about helium is false?}$ 2 211 Recommended Questions $\text{It has the lowest boiling point}$, $\text{It has the highest first ionization energy}$... $\text{It can form clathrate compounds}$ Edit Delete
10711 $\text{Argon is used:}$ 2 211 Recommended Questions $\text{To obtain low temperature}$, $\text{In high-temperature welding}$... $\text{In high-temperature welding}$ Edit Delete
10710 $\text{The welding of magnesium can be done in an atmosphere of:}$ 2 211 Recommended Questions $\text{O}_2$, $\text{Ar}$... $\text{Ar}$ Edit Delete
10709 $\text{Which of the following statements is correct?}$ 2 211 Recommended Questions $\text{Only type of interactions between particles of noble gases are due to weak dispersion forces.}$, $\text{Ionisation enthalpy of molecular oxygen is very high as compared to xenon.}$... $\text{Only type of interactions between particles of noble gases are due to weak dispersion forces.}$ Edit Delete
10708 $\text{The gas that is used in the gas thermometer is:}$ 2 211 Recommended Questions $\text{He}$, $\text{O}_2$... $\text{He}$ Edit Delete
10707 $\text{Which of the following is incorrect regarding noble gases?}$ 2 211 Recommended Questions $\text{The atomic radii corresponds to van der Waal's radii.}$, $\text{They have the largest size in a period.}$... $\text{They combine to form molecules.}$ Edit Delete
10706 $\text{Which of the following statements is false?}$ 2 211 Recommended Questions $\text{Xe is the most reactive among the rare gases.}$, $\text{He is an inert gas.}$... $\text{The most abundant rare gas found in the atmosphere is He.}$ Edit Delete
10705 $\text{In the preparation of compounds of Xe, Bartlett had taken } \text{O}_2^+\text{PtF}_6^- \text{ as a base compound. This is because:}$ 2 211 Recommended Questions $\text{Both } \text{O}_2 \text{ and Xe have same size.}$, $\text{Both } \text{O}_2 \text{ and Xe have same electron gain enthalpy.}$... $\text{Both } \text{O}_2 \text{ and Xe have almost same ionisation enthalpy.}$ Edit Delete
10704 $\text{XeF}_4 \text{ is isostructural with:}$ 2 211 Recommended Questions $\text{ICl}_4^-$, $\text{IBr}_2^-$... $\text{ICl}_4^-$ Edit Delete
10703 $\text{Which of the following liquids has the ability to climb the glass vessel's wall?}$ 2 211 Recommended Questions $\text{Alcohol}$, $\text{Liquid He}$... $\text{Liquid He}$ Edit Delete
10702 $\text{Which of the following statement is false?}$ 2 211 Recommended Questions $\text{Liquid helium is used as a cryogenic liquid.}$, $\text{XeO}_3 \text{ has four } \sigma \text{ and four } \pi\text{-bonds.}$... $\text{XeO}_3 \text{ has four } \sigma \text{ and four } \pi\text{-bonds.}$ Edit Delete
10701 $\text{Among the following molecules,}$ $\text{(i) } \text{XeO}_3$ $\text{(ii) } \text{XeOF}_4$ $\text{(iii) } \text{XeF}_6$ $\text{Those having the same number of lone pairs on Xe are}$ 2 211 Recommended Questions $\text{(i) and (ii) only}$, $\text{(i) and (iii) only}$... $\text{(i), (ii) and (iii) only}$ Edit Delete
10700 $\text{Which of the following statements is false?}$ 2 211 Recommended Questions $\text{H}_3\text{PO}_2\text{, H}_3\text{PO}_3 \text{ and H}_3\text{PO}_4 \text{ all are tribasic and reducing in nature.}$, $\text{Amongst anions } NO_3^-\text{, } SO_3^{2-}\text{, } CO_3^{2-}\text{, and } BO_3^{3-}\text{, only } SO_3^{2-} \text{ have p}\pi\text{-d}\pi \text{ bonding.}$... $\text{H}_3\text{PO}_2\text{, H}_3\text{PO}_3 \text{ and H}_3\text{PO}_4 \text{ all are tribasic and reducing in nature.}$ Edit Delete
10699 $\text{(a) XeF}_6 + 3\text{H}_2\text{O} \rightarrow$ $\text{(b) XeF}_6 + \text{H}_2\text{O} \rightarrow$ $\text{The products formed in the above reactions, respectively, are:}$ 2 211 Recommended Questions $\text{XeO}_3\text{, XeOF}_4$, $\text{XeO}_6\text{, XeOF}_4$... $\text{XeO}_3\text{, XeOF}_4$ Edit Delete
10698 $\text{The molecular shapes of SF}_4\text{, CF}_4 \text{ and XeF}_4 \text{ are:}$ 2 211 Recommended Questions $\text{The same with 2, 0 and 1 lone pairs of electrons on the central atoms, respectively}$, $\text{The same with 1, 1 and 1 lone pairs of electrons on the central atoms, respectively}$... $\text{Different with 1, 0 and 2 lone pairs of electrons on the central atoms, respectively}$ Edit Delete
10697 $\text{Xe} + \text{PtF}_6 \rightarrow ?$ $\text{The product of the above reaction is:}$ 2 211 Recommended Questions $\text{O}_2^+ [\text{PtF}_6]^-$, $\text{XeF}_4$... $\text{Xe}^+ [\text{PtF}_6]^-$ Edit Delete
10696 $\text{Match the species given in Column I with the shape given in Column II and mark the correct option.}$ $\text{Column I:}$ $\text{A. Its partial hydrolysis does not change oxidation state of central atom.}$ $\text{B. It is used in modern diving apparatus.}$ $\text{C. It is used to provide inert atmosphere for filling electrical bulbs.}$ $\text{D. It's central atom is in sp}^3\text{d}^2\text{ hybridisation.}$ $\text{Column II:}$ $\text{1. He}$ $\text{2. XeF}_6$ $\text{3. XeF}_4$ $\text{4. Ar}$ $\text{Codes:}$ 2 211 Recommended Questions $\text{A-1, B-4, C-2, D-3}$, $\text{A-1, B-2, C-3, D-4}$... $\text{A-2, B-1, C-4, D-3}$ Edit Delete
10695 $\text{A xenon fluoride that does not exist is:}$ 2 211 Recommended Questions $\text{XeF}_4$, $\text{XeF}_2$... $\text{XeF}_3$ Edit Delete
10694 $\text{Radon is used in the treatment of:}$ 2 211 Recommended Questions $\text{Typhoid}$, $\text{Cancer}$... $\text{Cancer}$ Edit Delete
10693 $\text{Among the following statements, the correct one(s) is/are:}$ 2 211 Recommended Questions $\text{Neon gas is filled in discharge tubes with characteristic colours.}$, $\text{Neon gas is used in beacon lights.}$... $\text{All of the above.}$ Edit Delete
10692 $\text{Which of the following compound does not exist?}$ 2 211 Recommended Questions $\text{XeOF}_4$, $\text{NeF}_2$... $\text{NeF}_2$ Edit Delete
10691 $\text{Match the interhalogen compounds in Column I with the geometry in Column II and assign the correct code:}$ $\text{Column-I:}$ $\text{(A) XX'}$ $\text{(B) XX'}_3$ $\text{(C) XX'}_5$ $\text{(D) XX'}_7$ $\text{Column-II:}$ $\text{(i) T-shape}$ $\text{(ii) Pentagonal bipyramidal}$ $\text{(iii) Linear}$ $\text{(iv) Square Pyramidal}$ 2 211 Recommended Questions $\text{(A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)}$, $\text{(A)-(i), (B)-(iv), (C)-(iii), (D)-(ii)}$... $\text{(A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)}$ Edit Delete
10690 $\text{Identify the false statement among the following about the halogens:}$ 2 211 Recommended Questions $\text{All form monobasic oxyacids(except HOF).}$, $\text{All are oxidizing agents.}$... $\text{Chlorine has the highest electron-gain enthalpy.}$ Edit Delete
10689 $\text{Cl}_2\text{(g)} + \text{Ba(OH)}_2 \rightarrow \text{X(aq)} + \text{BaCl}_2 + \text{H}_2\text{O}$ $\text{X} + \text{H}_2\text{SO}_4 \rightarrow \text{Y} + \text{BaSO}_4$ $\text{Y} \xrightarrow{\Delta > 365 \text{ K}} \text{Z} + \text{H}_2\text{O} + \text{O}_2$ $\text{Y and Z are respectively :}$ 2 211 Recommended Questions $\text{HClO}_4, \text{ClO}_2$, $\text{HClO}_3, \text{ClO}_2$... $\text{HClO}_3, \text{ClO}_2$ Edit Delete
10688 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): HI cannot be prepared by the reaction of KI with concentrated H}_2\text{SO}_4\text{.}$ $\text{Reason (R): HI has the lowest H-X bond strength among halogen acids.}$ 2 211 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$ Edit Delete
10687 $\text{Why does fluorine not produce oxyacids?}$ 2 211 Recommended Questions $\text{It is most electronegative}$, $\text{It is the most powerful oxidising agent}$... $\text{It is most electronegative}$ Edit Delete
10686 $\text{What order does the stability of interhalogen compounds follow?}$ 2 211 Recommended Questions $\text{IF}_3 > \text{BrF}_3 > \text{ClF}_3$, $\text{BrF}_3 > \text{IF}_3 > \text{ClF}_3$... $\text{IF}_3 > \text{BrF}_3 > \text{ClF}_3$ Edit Delete
10685 $\text{Which halogen produces O}_2 \text{ when combined with hot concentrated NaOH?}$ 2 211 Recommended Questions $\text{F}_2$, $\text{Cl}_2$... $\text{F}_2$ Edit Delete
10684 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): The atomic size of F is smaller than that of Cl.}$ $\text{Reason (R): F-F bond is stronger than the Cl-Cl bond.}$ 2 211 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... $\text{(A) is true but (R) is false.}$ Edit Delete
10683 $\text{Which of the following is the anhydride of HClO}_4\text{?}$ 2 211 Recommended Questions $\text{Cl}_2\text{O}$, $\text{ClO}_2$... $\text{Cl}_2\text{O}_7$ Edit Delete
10682 $\text{The correct order of the bond dissociation enthalpy of halogen molecules is:}$ 2 211 Recommended Questions $\text{Cl}_2 > \text{Br}_2 > \text{F}_2 > \text{I}_2$, $\text{Br}_2 > \text{I}_2 > \text{F}_2 > \text{Cl}_2$... $\text{Cl}_2 > \text{Br}_2 > \text{F}_2 > \text{I}_2$ Edit Delete
10681 $\text{Incorrect order among the following is:}$ 2 211 Recommended Questions $\text{F}_2 > \text{Cl}_2 > \text{Br}_2 > \text{I}_2$ $\text{Oxidising power}$, $\text{F} < \text{Cl} > \text{Br} > \text{I}$ $\text{Electron gain enthalpy}$... $\text{F}_2 > \text{Cl}_2 > \text{Br}_2 > \text{I}_2$ $\text{Bond dissociation energy}$ Edit Delete
10680 $\text{Select the correct option based on the statements below:}$ $\text{Assertion (A): NaCl reacts with concentrated H}_2\text{SO}_4 \text{ to give colourless fumes with a pungent smell. But on adding MnO}_2\text{, the fumes become greenish-yellow.}$ $\text{Reason (R): MnO}_2 \text{ oxidizes HCl to chlorine gas which is greenish-yellow.}$ 2 211 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$ Edit Delete
10679 $\text{HI cannot be prepared by the action of KI and H}_2\text{SO}_4 \text{ because}$ 2 211 Recommended Questions $\text{HI is a much weaker acid than H}_2\text{SO}_4$, $\text{HI gets oxidized by H}_2\text{SO}_4 \text{ to form I}_2$... $\text{HI gets oxidized by H}_2\text{SO}_4 \text{ to form I}_2$ Edit Delete
10678 $\text{Which of the following statements is true?}$ 2 211 Recommended Questions $\text{SO}_2 \text{ bleaches by reduction}$, $\text{Cl}_2 \text{ bleaches by oxidation}$... $\text{All of the above}$ Edit Delete
10677 $\text{Which parent oxy acid does not have its own hypo acid?}$ 2 211 Recommended Questions $\text{H}_2\text{SO}_2$, $\text{HNO}_2$... $\text{H}_2\text{SO}_2$ Edit Delete
10676 $\text{The electron gain enthalpy values for O} \rightarrow \text{O}^- \text{ and O} \rightarrow \text{O}^{2-} \text{ are -141 and 702 kJ mol}^{-1}\text{, respectively. The correct statement about the formation of oxides is-}$ 2 211 Recommended Questions $\text{Higher the electron gain enthalpy lower is the lattice energy.}$, $\text{Higher the electron gain enthalpy higher is the lattice energy.}$... $\text{Higher the electron gain enthalpy higher is the stability of oxide.}$ Edit Delete
10675 $\text{The correct relationship between the pH of isomolar solutions of sodium oxide}(\text{pH}_1)\text{, sodium sulphide}(\text{pH}_2)\text{, sodium selenide}(\text{pH}_3)\text{ and sodium telluride}(\text{pH}_4)\text{ is -}$ 2 211 Recommended Questions $\text{pH}_1 > \text{pH}_2 \approx \text{pH}_3 > \text{pH}_4$, $\text{pH}_1 < \text{pH}_2 < \text{pH}_3 < \text{pH}_4$... $\text{pH}_1 > \text{pH}_2 > \text{pH}_3 > \text{pH}_4$ Edit Delete
10674 $\text{The gas that cannot be collected over water is:}$ 2 211 Recommended Questions $\text{N}_2$, $\text{O}_2$... $\text{SO}_2$ Edit Delete
10673 $\text{The correct statement regarding the bond angle of } \text{H}_2\text{O} \text{ and } \text{H}_2\text{S} \text{ is:}$ 2 211 Recommended Questions $\text{Both have the same bond angle.}$, $\text{Bond angle of } \text{H}_2\text{O} \text{ is larger than that of } \text{H}_2\text{S}$... $\text{Bond angle of } \text{H}_2\text{O} \text{ is larger than that of } \text{H}_2\text{S}$ Edit Delete
10672 $\text{The partial hydrolysis of one mole of peroxodi-sulphuric acid produces}$ 2 211 Recommended Questions $\text{Two moles of sulphuric acid}$, $\text{Two moles of peroxomono-sulphuric acid}$... $\text{One mole of sulphuric acid, one mole of peroxomono-sulphuric acid}$ Edit Delete
10671 $\text{SO}_2 + \text{H}_2\text{S} \rightarrow \text{product. The final product will be:}$ 2 211 Recommended Questions $\text{H}_2\text{O} + \text{S}$, $\text{H}_2\text{SO}_4$... $\text{H}_2\text{O} + \text{S}$ Edit Delete
10670 $\text{The oxide of a non-metal possesses the following characteristics:}$ $\text{i. It is both a proton donor and a proton acceptor.}$ $\text{ii. It is a poor conductor of electricity.}$ $\text{iii. It reacts readily with basic and acidic oxides.}$ $\text{iv. It oxidises Fe at boiling point.}$ $\text{The formula for oxide is:}$ 2 211 Recommended Questions $\text{H}_2\text{O}$, $\text{CO}_2$... $\text{H}_2\text{O}$ Edit Delete
10669 $\text{Which of the following statements about acid strength is false?}$ 2 211 Recommended Questions $\text{HI} > \text{HBr} > \text{HCl}$, $\text{HIO}_4 > \text{HBrO}_4 > \text{HClO}_4$... $\text{HIO}_4 > \text{HBrO}_4 > \text{HClO}_4$ Edit Delete
10668 $\text{How can one obtain sulphur trioxide?}$ 2 211 Recommended Questions $\text{CaSO}_4 + \text{C} \xrightarrow{\Delta}$, $\text{Fe}_2(\text{SO}_4)_3 \xrightarrow{\Delta}$... $\text{Fe}_2(\text{SO}_4)_3 \xrightarrow{\Delta}$ Edit Delete
10667 $\text{Hypo on treatment with I}_2 \text{ gives:}$ 2 211 Recommended Questions $\text{Na}_2\text{SO}_4$, $\text{Na}_2\text{S}_4\text{O}_6$... $\text{Na}_2\text{S}_4\text{O}_6$ Edit Delete
10666 $\text{Which of the following are peroxoacids of sulphur?}$ 2 211 Recommended Questions $\text{H}_2\text{SO}_5 \text{ and } \text{H}_2\text{S}_2\text{O}_8$, $\text{H}_2\text{SO}_5 \text{ and } \text{H}_2\text{S}_2\text{O}_7$... $\text{H}_2\text{SO}_5 \text{ and } \text{H}_2\text{S}_2\text{O}_8$ Edit Delete
10665 $\text{The correct statement among the following about SO}_2 \text{ gas is:}$ 2 211 Recommended Questions $\text{It acts as bleaching agent in moist conditions.}$, $\text{It's molecule has linear geometry.}$... $\text{It acts as bleaching agent in moist conditions.}$ Edit Delete
10664 $\text{Compound among the following with an S-S bond is:}$ 2 211 Recommended Questions $\text{H}_2\text{S}_2\text{O}_7$, $\text{H}_2\text{SO}_5$... $\text{H}_2\text{S}_2\text{O}_6$ Edit Delete
10663 $\text{Which of the following statements is true?}$ 2 211 Recommended Questions $\text{S} - \text{S bond is present in } \text{H}_2\text{S}_2\text{O}_6$, $\text{In peroxosulphuric acid } (\text{H}_2\text{SO}_5) \text{ sulphur is in } +5 \text{ oxidation state.}$... $\text{S} - \text{S bond is present in } \text{H}_2\text{S}_2\text{O}_6$ Edit Delete
10662 $\text{The oxidation states of the S atom in } \text{S}_4\text{O}_6^{2-} \text{ from left to right, respectively, are:}$ 2 211 Recommended Questions $+6, 0, 0, \text{ and } +6$, $+5, +1, +1, \text{ and } +5$... $+5, 0, 0, \text{ and } +5$ Edit Delete
10661 $\text{The correct order of boiling points for group 16 hydrides is:}$ 2 211 Recommended Questions $\text{H}_2\text{O} < \text{H}_2\text{S} < \text{H}_2\text{Se} < \text{H}_2\text{Te}$, $\text{H}_2\text{Te} < \text{H}_2\text{Se} < \text{H}_2\text{S} < \text{H}_2\text{O}$... $\text{H}_2\text{S} < \text{H}_2\text{Se} < \text{H}_2\text{Te} < \text{H}_2\text{O}$ Edit Delete
10660 $\text{What order does the stability of interhalogen compounds follow?}$ 2 211 Recommended Questions $\text{IF}_3 > \text{BrF}_3 > \text{ClF}_3$, $\text{BrF}_3 > \text{IF}_3 > \text{ClF}_3$... $\text{IF}_3 > \text{BrF}_3 > \text{ClF}_3$ Edit Delete
10659 $\text{The bleaching action of SO}_2 \text{ is due to its}$ 2 211 Recommended Questions $\text{Acidic property}$, $\text{Basic property}$... $\text{Reducing property}$ Edit Delete
10658 $\text{Among the following hydrides that has the lowest boiling point is:}$ 2 211 Recommended Questions $\text{H}_2\text{O}$, $\text{H}_2\text{S}$... $\text{H}_2\text{S}$ Edit Delete
10657 $\text{No S-S bonds are present in?}$ 2 211 Recommended Questions $\text{S}_2\text{O}_3^{2-}$, $\text{S}_2\text{O}_4^{2-}$... $\text{S}_2\text{O}_7^{2-}$ Edit Delete
10656 $\text{Which of the following statements about H}_2\text{SO}_4 \text{ is false:}$ 2 211 Recommended Questions $\text{It can act as an oxidising agent with copper}$, $\text{It acts as a dehydrating agent with sugar}$... $\text{It acts as a reducing agent in its reaction with Cu}_2\text{O}$ Edit Delete
10655 $\text{Which of the following has the least bond angle?}$ 2 211 Recommended Questions $\text{H}_2\text{O}$, $\text{NH}_3$... $\text{H}_2\text{O}$ Edit Delete
10654 $\text{Which of the following statements regarding ozone is incorrect?}$ 2 211 Recommended Questions $\text{Powerful oxidising agent.}$, $\text{Bleaching agent}$... $\text{Paramagnetic}$ Edit Delete
10653 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Both rhombic and monoclinic sulphur exist as } \text{S}_8 \text{ but oxygen exists as } \text{O}_2\text{.}$ $\text{Reason (R): Oxygen forms } p\pi - p\pi \text{ multiple bonds due to its small size and small bond length but } p\pi - p\pi \text{ bonding is not possible in sulphur.}$ 2 211 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$ Edit Delete
10652 $\text{Oxygen forms hydrogen bonds while chlorine does not, because:}$ 2 211 Recommended Questions $\text{Chlorine has a bigger size and as a result, a higher electron density per unit volume.}$, $\text{Oxygen has a smaller size and as a result, a lower electron density per unit volume.}$... $\text{Oxygen has a smaller size and as a result, a higher electron density per unit volume.}$ Edit Delete
10651 $\text{A compound that does not have a tetrahedral shape is:}$ 2 211 Recommended Questions $\text{NH}_4^{+}$, $\text{SiCl}_4$... $\text{SF}_4$ Edit Delete
10650 $\text{Select the correct option based on statements below:}$ 2 211 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$ Edit Delete
10649 $\text{Oxygen exists as gas and sulphur exists as a solid because:}$ 2 211 Recommended Questions $\text{Oxygen is less electronegative than sulphur.}$, $\text{Sulphur is smaller than oxygen molecule.}$... $\text{Oxygen has a tendency to form p}\pi\text{-p}\pi\text{ bonds.}$ Edit Delete
10648 $\text{The compound among the following with the lowest p}K_a \text{ value is?}$ 2 211 Recommended Questions $\text{H}_2\text{O}$, $\text{H}_2\text{S}$... $\text{H}_2\text{Te}$ Edit Delete
10647 $\text{The physical property of hydrides of group 16 that decreases down the group is:}$ 2 211 Recommended Questions $\text{Melting point}$, $\text{Thermal stability}$... $\text{Thermal stability}$ Edit Delete
10646 $\text{Which of the following is the correct match?}$ 2 211 Recommended Questions $\text{As}_2\text{O}_3 < \text{SiO}_2 < \text{P}_2\text{O}_3 < \text{SO}_2 \text{ - Basic strength.}$, $\text{AsH}_3 < \text{PH}_3 < \text{NH}_3 \text{ - Enthalpy of vaporisation.}$... $\text{H}_2\text{O} > \text{H}_2\text{S} > \text{H}_2\text{Se} > \text{H}_2\text{Te} \text{ - Thermal stability}$ Edit Delete
10645 $\text{a. CaF}_2 + \text{H}_2\text{SO}_4 \rightarrow \text{CaSO}_4 + 2\text{HF}$ $\text{b. 2HI + H}_2\text{SO}_4 \rightarrow \text{I}_2 + \text{SO}_2 + 2\text{H}_2\text{O}$ $\text{c. Cu + 2H}_2\text{SO}_4 \rightarrow \text{CuSO}_4 + \text{SO}_2 + 2\text{H}_2\text{O}$ $\text{d. NaCl + H}_2\text{SO}_4 \rightarrow \text{NaHSO}_4 + \text{HCl}$ $\text{In which of the above-mentioned reactions does conc. H}_2\text{SO}_4\text{ act as an oxidising reagent?}$ 2 211 Recommended Questions $\text{a and b}$, $\text{b and c}$... $\text{b and c}$ Edit Delete
10644 $\text{Hydrogen peroxide can be generated by the hydrolysis of}$ 2 211 Recommended Questions $\text{HNO}_3$, $\text{H}_2\text{P}_2\text{O}$... $\text{H}_2\text{S}_2\text{O}_8$ Edit Delete
10643 $\text{Which of the following reactions does not exhibit the oxidising behaviour of H}_2\text{SO}_4\text{?}$ 2 211 Recommended Questions $\text{Cu + 2H}_2\text{SO}_4 \rightarrow \text{CuSO}_4 + \text{SO}_2 + 2\text{H}_2\text{O}$, $3\text{S + 2H}_2\text{SO}_4 \rightarrow 3\text{SO}_2 + 2\text{H}_2\text{O}$... $\text{CaF}_2 + \text{H}_2\text{SO}_4 \rightarrow \text{CaSO}_4 + 2\text{HF}$ Edit Delete
10642 $\text{One gas bleaches the colour of flowers by reduction, while the other gas bleaches by oxidation. The two gases, respectively, are:}$ 2 211 Recommended Questions $\text{CO and Cl}_2$, $\text{H}_2\text{S and Br}_2$... $\text{SO}_2 \text{ and Cl}_2$ Edit Delete
10641 $\text{The correct statement regarding } \text{H}_3\text{PO}_3 \text{ is:}$ 2 211 Recommended Questions $\text{Each hydrogen atom is attached to oxygen.}$, $\text{Two hydrogen atoms are attached to oxygen atoms.}$... $\text{Two hydrogen atoms are attached to oxygen atoms.}$ Edit Delete
10640 $\text{Select the correct option based on statements below:}$ $\textbf{Assertion (A):} \text{SF}_6 \text{ cannot be hydrolysed but SF}_4 \text{ can be.}$ $\textbf{Reason (R):} \text{Six F-atoms in SF}_6 \text{ prevent the attack of H}_2\text{O on sulphur atom of SF}_6$ 2 211 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$ Edit Delete
10639 $\text{The number of S = O bonds present in } \text{H}_2\text{S}_2\text{O}_8 \text{ is:}$ 2 211 Recommended Questions $1$, $2$... $4$ Edit Delete
10638 $\text{An amorphous solid "A" burns in the air to form a gas "B" which turns lime}$ $\text{water milky. The gas is also produced as a by-product during the roasting of}$ $\text{sulphide ore. This gas decolourises acidified aqueous KMnO}_4 \text{ solution and}$ $\text{reduces Fe}^{3+} \text{ to Fe}^{2+}\text{. The solid "A" and the gas "B" are:}$ 2 211 Recommended Questions $\text{'A' = S}_8\text{; 'B' = SO}_2$, $\text{'A' = S}_8\text{; 'B' = SO}_3$... $\text{'A' = S}_8\text{; 'B' = SO}_2$ Edit Delete
10637 $\text{Which of the following hydrides is the most acidic?}$ 2 211 Recommended Questions $\text{H}_2\text{Te}$, $\text{H}_2\text{Se}$... $\text{H}_2\text{Te}$ Edit Delete
10636 $\text{Match the items in Columns I and II and mark the correct option.}$ $\textbf{Column I} \qquad \qquad \qquad \textbf{Column II}$ $\text{A. H}_2\text{SO}_4 \qquad \qquad \qquad \text{1. Highest electron affinity}$ $\text{B. CCl}_3\text{NO}_2 \qquad \qquad \qquad \text{2. Chalcogen}$ $\text{C. Cl}_2 \qquad \qquad \qquad \qquad \text{3. Tear gas}$ $\text{D. Sulphur} \qquad \qquad \qquad \text{4. Storage batteries}$ 2 211 Recommended Questions $\text{A-4, B-3, C-1, D-2}$, $\text{A-3, B-4, C-1, D-2}$... $\text{A-4, B-3, C-1, D-2}$ Edit Delete
10635 $\text{The acidity of diprotic acids in aqueous solution increases in the order:}$ 2 211 Recommended Questions $\text{H}_2\text{S} < \text{H}_2\text{Se} < \text{H}_2\text{Te}$, $\text{H}_2\text{Se} < \text{H}_2\text{S} < \text{H}_2\text{Te}$... $\text{H}_2\text{S} < \text{H}_2\text{Se} < \text{H}_2\text{Te}$ Edit Delete
10634 $\text{Oxygen exists as gas and sulphur exists as a solid because:}$ 2 211 Recommended Questions $\text{Oxygen is less electronegative than sulphur.}$, $\text{Sulphur is smaller than oxygen molecule.}$... $\text{Oxygen has a tendency to form p}\pi\text{-p}\pi\text{ bonds.}$ Edit Delete
10633 $\text{The chemical formula of oleum is -}$ 2 211 Recommended Questions $\text{H}_2\text{S}_2\text{O}_8$, $\text{H}_2\text{S}_2\text{O}_7$... $\text{H}_2\text{S}_2\text{O}_7$ Edit Delete
10632 $\text{The catalyst that is used in the contact process is:}$ 2 211 Recommended Questions $\text{Fe}_2\text{O}_3$, $\text{Al}_2\text{O}_3$... $\text{V}_2\text{O}_5$ Edit Delete
10631 $\text{Sulphuric acid is used:}$ 2 211 Recommended Questions $\text{In lead storage batteries}$, $\text{In making fertilizers}$... $\text{All of the above}$ Edit Delete
10630 $\text{A chemical that depletes the ozone layer is:}$ 2 211 Recommended Questions $\text{Sulphur}$, $\text{Chlorofluorocarbons (CFCs)}$... $\text{Chlorofluorocarbons (CFCs)}$ Edit Delete
10629 $\text{What is produced when orthophosphoric acid reacts with phosphate rock (fluorapatite)?}$ 2 211 Recommended Questions $\text{Ca}(\text{H}_2\text{PO}_4)_2 + \text{CaF}_2$, $\text{Ca}_3(\text{PO}_4)_2 + \text{CaF}_2 + \text{H}_2\text{O}$... $\text{Ca}(\text{H}_2\text{PO}_4)_2 + \text{HF}$ Edit Delete
10628 $\text{By heating which of the following, would } \text{NO}_2 \text{ be produced?}$ 2 211 Recommended Questions $\text{NaNO}_3$, $\text{AgNO}_3$... $\text{AgNO}_3$ Edit Delete
10627 $\text{An oxyacid among the following that contains both P-H and P-P bonds simultaneously is:}$ 2 211 Recommended Questions $\text{H}_4\text{P}_2\text{O}_5$, $\text{H}_4\text{P}_2\text{O}_7$... $\text{None of the above}$ Edit Delete
10626 $\text{Which sequence of the following, in terms of boiling point, is correct?}$ 2 211 Recommended Questions $\text{H}_3\text{PO}_4 < \text{H}_2\text{SO}_4$, $\text{H}_2\text{O} > \text{H}_2\text{O}_2$... $\text{H}_3\text{PO}_4 < \text{H}_2\text{SO}_4$ Edit Delete
10625 $\text{A substance that gives a brick red flame and breaks down on heating to give oxygen and a brown gas is:}$ 2 211 Recommended Questions $\text{Calcium carbonate}$, $\text{Magnesium carbonate}$... $\text{Calcium nitrate}$ Edit Delete
10624 $\text{Which of the following is true regarding the P}_4 \text{ molecule of white phosphorus?}$ 2 211 Recommended Questions $\text{It has 6 lone pairs of electrons.}$, $\text{It has four P - P single bonds.}$... $\text{It has four lone pairs of electrons.}$ Edit Delete
10623 $\text{What is the correct order of oxyacids of phosphorous in terms of their acidic strength?}$ 2 211 Recommended Questions $\text{H}_3\text{PO}_2 > \text{H}_3\text{PO}_3 > \text{H}_3\text{PO}_4$, $\text{H}_3\text{PO}_4 > \text{H}_3\text{PO}_3 > \text{H}_3\text{PO}_2$... $\text{H}_3\text{PO}_2 > \text{H}_3\text{PO}_3 > \text{H}_3\text{PO}_4$ Edit Delete
10622 $\text{Which element exhibits the highest catenation property?}$ 2 211 Recommended Questions $\text{Phosphorus}$, $\text{Nitrogen}$... $\text{Phosphorus}$ Edit Delete
10621 $\text{In the nitrogen family, the H-M-H bond angle in the hybrides } \text{MH}_3 \text{ gradually becomes closer to } 90° \text{ if we move from N to Sb. This shows that gradually}$ 2 211 Recommended Questions $\text{The basic strength of hybrides increases.}$, $\text{Pure p-orbitals (almost) are used for M-H bonding.}$... $\text{Pure p-orbitals (almost) are used for M-H bonding.}$ Edit Delete
10620 $\text{Which of the following is in the correct sequence?}$ $\text{[For the correct order mark (T) and for the incorrect order mark (F)]:}$ $\text{(a) Lewis acidity order: } \text{SiF}_4 < \text{SiCl}_4 < \text{SiBr}_4 < \text{SiI}_4$ $\text{(b) Melting point: } \text{NH}_3 > \text{SbH}_3 > \text{AsH}_3 > \text{PH}_3$ $\text{(c) Boiling point: } \text{NH}_3 > \text{SbH}_3 > \text{AsH}_3 > \text{PH}_3$ $\text{(d) Dipole moment order: } \text{NH}_3 > \text{SbH}_3 > \text{AsH}_3 > \text{PH}_3$ 2 211 Recommended Questions $\text{(a) F, (b) T, (c) F, (d) T}$, $\text{(a) T, (b) F, (c) T, (d) F}$... $\text{(a) F, (b) T, (c) F, (d) T}$ Edit Delete
10619 $\text{Which of the following statements is true?}$ 2 211 Recommended Questions $\text{NH}_3 \text{ is less soluble than } \text{PH}_3 \text{ in water}$, $\text{NH}_3 \text{ is a stronger base and stronger reducing agent than } \text{PH}_3$... $\text{PH}_3 \text{ is a stronger reducing agent than } \text{NH}_3 \text{ and it has lower melting critical temperature than } \text{NH}_3$ Edit Delete
10618 $\text{Which of the following compounds is not an acidic salt?}$ 2 211 Recommended Questions $\text{NaH}_2\text{PO}_2$, $\text{NaH}_2\text{PO}_3$... $\text{NaH}_2\text{PO}_2$ Edit Delete
10617 $\text{The least acidic oxide among the following is:}$ 2 211 Recommended Questions $\text{P}_4\text{O}_6$, $\text{P}_4\text{O}_{10}$... $\text{As}_4\text{O}_6$ Edit Delete
10616 $\text{Which of the following contains salts of } \text{H}_3\text{PO}_3?$ $\text{I. } \text{NaH}_2\text{PO}_3 \quad \text{II. } \text{Na}_2\text{HPO}_3 \quad \text{III. } \text{Na}_3\text{PO}_3$ 2 211 Recommended Questions $\text{I, and II only}$, $\text{I, II, and III}$... $\text{I, and II only}$ Edit Delete
10615 $\text{Which of the following acids is the strongest?}$ 2 211 Recommended Questions $\text{H}_3\text{PO}_2$, $\text{H}_3\text{PO}_3$... $\text{H}_4\text{P}_2\text{O}_7$ Edit Delete
10614 $\text{NO}_2 \text{ is the anhydride of}$ 2 211 Recommended Questions $\text{HNO}_3$, $\text{HNO}_2$... $\text{HNO}_3 + \text{HNO}_2$ Edit Delete
10613 $\text{Which of the following hydrides is the least poisonous?}$ 2 211 Recommended Questions $\text{NH}_3$, $\text{PH}_3$... $\text{NH}_3$ Edit Delete
10612 $\text{Phosphine can not be produced by the following reaction:}$ 2 211 Recommended Questions $\text{White P is heated with NaOH.}$, $\text{Red P is heated with NaOH.}$... $\text{Red P is heated with NaOH.}$ Edit Delete
10611 $\text{The incorrect statement regarding oxoacids of phosphorus is:}$ 2 211 Recommended Questions $\text{Orthophosphoric acid is used in the manufacture of triple superphosphate.}$, $\text{Hypophosphorous acid is a diprotic acid.}$... $\text{Hypophosphorous acid is a diprotic acid.}$ Edit Delete
10610 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): } \text{PF}_5 \text{ and } \text{IF}_3 \text{ have similar shapes.}$ $\text{Reason (R): All the bond lengths are equal in } \text{PF}_5\text{.}$ 2 211 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are false.}$ Edit Delete
10609 $\text{PCl}_5 \text{ acts as}$ 2 211 Recommended Questions $\text{Reducing agent}$, $\text{Oxidising agent}$... $\text{Oxidising agent}$ Edit Delete
10608 $\text{In solid-state, } \text{PCl}_5 \text{ exists as:}$ 2 211 Recommended Questions $\text{Covalent solid.}$, $\text{Octahedral structure.}$... $\text{Ionic solid with } [\text{PCl}_4]^+ \text{ tetrahedral and } [\text{PCl}_6]^- \text{ octahedral.}$ Edit Delete
10607 $\text{Incorrect statement regarding } \text{PH}_3 \text{ is:}$ 2 211 Recommended Questions $\text{It is produced by the hydrolysis of } \text{Ca}_3\text{P}_2$, $\text{It gives a black ppt, } \text{Cu}_3\text{P}_2 \text{ with a } \text{CuSO}_4 \text{ solution.}$... $\text{It does not react with } \text{B}_2\text{H}_6$ Edit Delete
10606 $\text{The hydride that possesses the maximum complex formation nature is:}$ 2 211 Recommended Questions $\text{NH}_3$, $\text{PH}_3$... $\text{NH}_3$ Edit Delete
10605 $\text{Which of the following statements is false?}$ 2 211 Recommended Questions $\text{Nitrous oxide supports combustion more vigorously than air.}$, $\text{Phosphorous pentaoxide dehydrates nitric acid-forming nitrogen pentaoxide.}$... $\text{Red phosphorous changes to white phosphorus on heating in the atmosphere of } \text{CO}_2 \text{ or coal gas at 573 K.}$ Edit Delete
10604 $\text{Which of the following statements is false?}$ 2 211 Recommended Questions $\text{ONClO and ONO}^- \text{ are isoelectronic.}$, $\text{O}_3 \text{ molecule is bent}$... Edit Delete
10603 $\text{The incorrect statement regarding oxoacids of phosphorus is:}$ 2 211 Recommended Questions $\text{Orthophosphoric acid is used in the manufacture of triple superphosphate.}$, $\text{Hypophosphorous acid is a diprotic acid.}$... $\text{Hypophosphorous acid is a diprotic acid.}$ Edit Delete
10602 $\text{The paramagnetic oxides of nitrogen are:}$ 2 211 Recommended Questions $\text{NO, N}_2\text{O}$, $\text{NO}_2\text{, NO, N}_2\text{O}$... $\text{NO, NO}_2$ Edit Delete
10601 $\text{In which compound does phosphorous have the lowest oxidation state?}$ 2 211 Recommended Questions $\text{H}_3\text{PO}_3$, $\text{PCl}_3$... $\text{Ca}_3\text{P}_2$ Edit Delete
10600 $\text{Which of the following statements is false?}$ 2 211 Recommended Questions $\text{ONClO and ONO}^- \text{ are isoelectronic.}$, $\text{O}_3 \text{ molecule is bent}$... Edit Delete
10599 51 2 211 Recommended Questions 1, 2... 3 Edit Delete
10598 $\text{Which of the following is in correct sequence in terms of acid nature?}$ 2 211 Recommended Questions $\text{HClO}_2 < \text{HClO}_3 < \text{HClO}_4$, $\text{H}_3\text{PO}_4 < \text{H}_3\text{PO}_3 < \text{H}_3\text{PO}_2$... $\text{All of the above.}$ Edit Delete
10597 $\text{The strongest reducing agent is:}$ 2 211 Recommended Questions $\text{H}_4\text{P}_2\text{O}_7$, $\text{H}_3\text{PO}_3$... $\text{H}_3\text{PO}_2$ Edit Delete
10596 $\text{Which of the following compounds does not release oxygen when heated?}$ 2 211 Recommended Questions $\text{Zn(ClO}_3\text{)}_2$, $\text{K}_2\text{Cr}_2\text{O}_7$... $(\text{NH}_4)_2\text{Cr}_2\text{O}_7$ Edit Delete
10595 $\text{Copper on heating with concentrated } \text{HNO}_3 \text{ produces:}$ 2 211 Recommended Questions $\text{Cu}(\text{NO}_3)_2 \text{ and NO}$, $\text{Cu}(\text{NO}_3)_2, \text{NO and } \text{NO}_2$... $\text{Cu}(\text{NO}_3)_2 \text{ and } \text{NO}_2$ Edit Delete
10594 $\text{Incorrect statement about red phosphorus is:}$ 2 211 Recommended Questions $\text{It is hard and crystalline.}$, $\text{It is poisonous.}$... $\text{It is poisonous.}$ Edit Delete
10593 $\text{The maximum covalency of nitrogen is:}$ 2 211 Recommended Questions $3$, $5$... $4$ Edit Delete
10592 $\text{Oxidation of nitrogen among the following reactions is indicated by -}$ 2 211 Recommended Questions $\text{N}_2 \rightarrow 2\text{NH}_3$, $\text{N}_2\text{O}_4 \rightarrow 2\text{NO}_2$... $\text{NO}_2^- \rightarrow \text{NO}_3^-$ Edit Delete
10591 $\text{The element that does not form pentoxide is:}$ 2 211 Recommended Questions $\text{As}$, $\text{Sb}$... $\text{Bi}$ Edit Delete
10590 $\text{The correct increasing order for the acid strength of nitrogen oxides is:}$ 2 211 Recommended Questions $\text{N}_2\text{O} < \text{NO} < \text{N}_2\text{O}_4 < \text{N}_2\text{O}_3 < \text{N}_2\text{O}_5$, $\text{N}_2\text{O} < \text{NO} < \text{N}_2\text{O}_3 < \text{N}_2\text{O}_4 < \text{N}_2\text{O}_5$... $\text{N}_2\text{O} < \text{NO} < \text{N}_2\text{O}_3 < \text{N}_2\text{O}_4 < \text{N}_2\text{O}_5$ Edit Delete
10589 $\text{Element/s that form p}\pi - \text{p}\pi \text{ multiple bonds with themselves, as well as with carbon and oxygen are:}$ 2 211 Recommended Questions $\text{P, As}$, $\text{N, As}$... $\text{N}$ Edit Delete
10588 $\text{A compound 'X', upon reaction with } \text{H}_2\text{O}, \text{ produces a colourless gas 'Y' with a rotten fish smell. Gas 'Y' is absorbed in a solution of } \text{CuSO}_4 \text{ to give } \text{Cu}_3\text{P}_2 \text{ as one of the products. The compound 'X' will be:}$ 2 211 Recommended Questions $\text{Ca}_3\text{P}_2$, $\text{NH}_4\text{Cl}$... $\text{Ca}_3\text{P}_2$ Edit Delete
10587 $\text{Which of the following is true about reactivity of group 15 elements?}$ 2 211 Recommended Questions $\text{Stability of their hydrides increases down the group.}$, $\text{Higher oxides are acidic in nature.}$... $\text{Higher oxides are acidic in nature.}$ Edit Delete
10586 $\text{Iodine on reaction with concentrated nitric acid forms:}$ 2 211 Recommended Questions $\text{HOI}$, $\text{HI}$... $\text{HIO}_3$ Edit Delete
10585 $\text{Among the following reactions, } \text{N}_2 \text{ is not generated by heating:}$ 2 211 Recommended Questions $(\text{NH}_4)_2\text{Cr}_2\text{O}_7$, $\text{NH}_4\text{Cl} + \text{NaNO}_2$... $\text{NH}_4\text{Cl} + \text{CaO}$ Edit Delete
10584 $\text{Nitrogen exists as a diatomic molecule and phosphorus as P}_4 \text{ because on moving}$ 2 211 Recommended Questions $\text{up a group, the tendency to form p}\pi\text{-p}\pi \text{ bonds decreases.}$, $\text{down a group, the tendency to form p}\pi\text{-p}\pi \text{ bonds decreases.}$... $\text{down a group, the tendency to form p}\pi\text{-p}\pi \text{ bonds decreases.}$ Edit Delete
10583 $\text{Among the following reactions, } \text{N}_2 \text{ is not generated by heating:}$ 2 211 Recommended Questions $(\text{NH}_4)_2\text{Cr}_2\text{O}_7$, $\text{NH}_4\text{Cl} + \text{NaNO}_2$... $\text{NH}_4\text{Cl} + \text{CaO}$ Edit Delete
10582 $\text{The number of moles of NO produced by the oxidation of two moles of NH}_3 \text{ will be -}$ 2 211 Recommended Questions $2$, $3$... $2$ Edit Delete
10581 $\text{Among the following reactions, } \text{N}_2 \text{ is not generated by heating:}$ 2 211 Recommended Questions $(\text{NH}_4)_2\text{Cr}_2\text{O}_7$, $\text{NH}_4\text{Cl} + \text{NaNO}_2$... $\text{NH}_4\text{Cl} + \text{CaO}$ Edit Delete
10580 $\text{P forms multiple bonds in POCl}_3 \text{ by using}$ 2 211 Recommended Questions $p\pi - p\pi$, $d\pi - d\pi$... $p\pi - d\pi$ Edit Delete
10579 $\text{Among the following reactions, } \text{N}_2 \text{ is not generated by heating:}$ 2 211 Recommended Questions $(\text{NH}_4)_2\text{Cr}_2\text{O}_7$, $\text{NH}_4\text{Cl} + \text{NaNO}_2$... $\text{NH}_4\text{Cl} + \text{CaO}$ Edit Delete
10578 $\text{The basicity of the acids H}_3\text{PO}_2\text{, H}_3\text{PO}_3\text{, H}_3\text{PO}_4 \text{ and H}_4\text{P}_2\text{O}_7 \text{ are, respectively:}$ 2 211 Recommended Questions $1, 2, 3, 7$, $2, 3, 4, 7$... $1, 2, 3, 4$ Edit Delete
10577 $\text{Bismuth is present in a +5 oxidation state in:}$ 2 211 Recommended Questions $\text{Bi}_2\text{O}_5$, $\text{BiF}_5$... $\text{BiF}_5$ Edit Delete
10576 $\text{False statement regarding PCl}_5 \text{ is:}$ 2 211 Recommended Questions $\text{PCl}_5 \text{ molecule is non-reactive.}$, $\text{Three equatorial P-Cl bonds make an angle of 120° with each other.}$... $\text{PCl}_5 \text{ molecule is non-reactive.}$ Edit Delete
10575 $\text{Nitrogen dioxide is paramagnetic in a gaseous state but diamagnetic in solid because:}$ 2 211 Recommended Questions $\text{NO}_2 \text{ exists as a dimer in a gaseous as well as solid state.}$, $\text{NO}_2 \text{ exists as a monomer in a gaseous as well as solid state.}$... $\text{NO}_2 \text{ exists as a monomer in a gaseous state and it becomes dimerized in solid state.}$ Edit Delete
10574 $\text{The false statement regarding hydrides from the 15th group is:}$ 2 211 Recommended Questions $\text{NH}_3 > \text{PH}_3 > \text{AsH}_3 > \text{SbH}_3 > \text{BiH}_3 \text{ Thermal stability}$, $\text{N-H} > \text{P-H} > \text{As-H} > \text{Sb-H} > \text{Bi-H E-H bond dissociation enthalpy}$... $\text{NH}_3 > \text{PH}_3 > \text{AsH}_3 > \text{SbH}_3 > \text{BiH}_3 \text{ Reducing character}$ Edit Delete
10573 $\text{The least basic compound is:}$ 2 211 Recommended Questions $\text{BiH}_3$, $\text{AsH}_3$... $\text{BiH}_3$ Edit Delete
10572 $\text{The condition that does not exist in the Haber process for the manufacturing of ammonia is:}$ 2 211 Recommended Questions $\text{Pressure (around } 200 \times 10^5 \text{ Pa)}$, $\text{Temperature (700 K)}$... $\text{Presence of inert gases.}$ Edit Delete
10571 $\text{The oxidation state of the central atom in the anion of compound } \text{NaH}_2\text{PO}_2 \text{ will be:}$ 2 211 Recommended Questions $+3$, $+5$... $+1$ Edit Delete
10570 $\text{The strong reducing behaviour of H}_3\text{PO}_2 \text{ is due to:}$ 2 211 Recommended Questions $\text{Presence of one -OH group and two P-H bonds.}$, $\text{High electron gain enthalpy of phosphorus.}$... $\text{Presence of one -OH group and two P-H bonds.}$ Edit Delete
10569 $\text{Lead nitrate upon heating gives:}$ 2 211 Recommended Questions $\text{N}_2\text{O, PbO}$, $\text{NO}_2\text{, PbO}$... $\text{NO}_2\text{, PbO}$ Edit Delete
10568 $\text{Which of the following statements is true?}$ 2 211 Recommended Questions $\text{All three N - O bond lengths in HNO}_3 \text{ are equal.}$, $\text{All P - Cl bond lengths in PCl}_5 \text{ molecule in gaseous state are equal.}$... $\text{P}_4 \text{ molecules in white phosphorus have angular strain. Therefore, white phosphorus is very reactive.}$ Edit Delete
10567 $\text{A brown ring formed in the ring test for } \text{NO}_3^- \text{ ion is due to the formation of:}$ 2 211 Recommended Questions $[\text{Fe}(\text{H}_2\text{O})_5(\text{NO})]^{2+}$, $\text{FeSO}_4.\text{NO}_2$... $[\text{Fe}(\text{H}_2\text{O})_5(\text{NO})]^{2+}$ Edit Delete
10566 $\text{An element that does not show allotropy is:}$ 2 211 Recommended Questions $\text{Nitrogen}$, $\text{Phosphorus}$... $\text{Nitrogen}$ Edit Delete
10565 $\text{A solid (A) reacts with strong aqueous NaOH, liberating a foul smelling gas (B), which spontaneously burns in the air, giving smoky rings. A and B are, respectively:}$ 2 211 Recommended Questions $\text{P}_4\text{ (red) and PH}_3$, $\text{P}_4\text{ (white) and PH}_3$... $\text{P}_4\text{ (white) and PH}_3$ Edit Delete
10564 $\text{The correct increasing order of basic strength of hydrides:}$ 2 211 Recommended Questions $\text{BiH}_3 \simeq \text{SbH}_3 < \text{AsH}_3 < \text{PH}_3 < \text{NH}_3$, $\text{BiH}_3 > \text{NH}_3 > \text{PH}_3 > \text{SbH}_3 > \text{AsH}_3$... $\text{BiH}_3 \simeq \text{SbH}_3 < \text{AsH}_3 < \text{PH}_3 < \text{NH}_3$ Edit Delete
10563 $\text{A compound having two direct bonds between P and H atoms is:}$ 2 211 Recommended Questions $\text{H}_3\text{PO}_2$, $\text{H}_3\text{PO}_3$... $\text{H}_3\text{PO}_2$ Edit Delete
10562 $\text{Ammonium dichromate and barium azide on heating gives:}$ 2 211 Recommended Questions $\text{N}_2 \text{ in both cases.}$, $\text{N}_2 \text{ with ammonium dichromate and NO with barium azide.}$... $\text{N}_2 \text{ in both cases.}$ Edit Delete
10561 $\text{The correct structure of pyrophosphoric acid is:}$ 2 211 Recommended Questions $\text{HO-P(=O)(OH)-OH}$, $\text{H-P(=O)(OH)-OH}$... $\text{HO-P(=O)(OH)-O-P(=O)(OH)-OH}$ Edit Delete
10560 $\text{A brown-coloured mixture of two gases is obtained by reducing 6 N nitric acid with metallic copper. This mixture on cooling condenses to a blue liquid which on freezing (-30 °C) gives a blue solid. The correct statement for the blue liquid or solid is:}$ 2 211 Recommended Questions $\text{It is referred to as the anhydride of nitrous acid.}$, $\text{It is an acidic oxide. Hence, it dissolves in alkalies producing nitrites.}$... $\text{All of the above.}$ Edit Delete
10559 $\text{Nitrogen gas is liberated by the thermal decomposition of:}$ 2 211 Recommended Questions $\text{NH}_4\text{NO}_2$, $\text{NaN}_3$... $\text{All of the above}$ Edit Delete
10558 $\text{An element belongs to group 15 and 3}^{\text{rd}} \text{ period of the periodic table. Its electronic configuration would be:}$ 2 211 Recommended Questions $1s^2 2s^2 2p^4$, $1s^2 2s^2 2p^3$... $1s^2 2s^2 2p^6 3s^2 3p^3$ Edit Delete
10557 $\text{A balanced chemical equation for the reaction showing catalytic oxidation of NH}_3 \text{ by atmospheric oxygen is:}$ 2 211 Recommended Questions $4\text{NH}_3 + 5\text{O}_2 \xrightarrow[\text{500 K; 9 bar}]{\text{Pt / Rh gauge catalyst}} 4\text{NO} + 6\text{H}_2\text{O}$, $3\text{NH}_4 + 5\text{O}_2 \xrightarrow[\text{500 K; 9 bar}]{\text{Pt / Rh gauge catalyst}} 3\text{NO} + 6\text{H}_2\text{O}$... $4\text{NH}_3 + 5\text{O}_2 \xrightarrow[\text{500 K; 9 bar}]{\text{Pt / Rh gauge catalyst}} 4\text{NO} + 6\text{H}_2\text{O}$ Edit Delete
10556 $\text{The respective oxidation states of P in } \text{H}_4\text{P}_2\text{O}_5, \text{H}_4\text{P}_2\text{O}_6, \text{ and } \text{H}_4\text{P}_2\text{O}_7 \text{ are:}$ 2 211 Recommended Questions $+3, +5, \text{ and } +4$, $+5, +3, \text{ and } +4$... $+3, +4, \text{ and } +5$ Edit Delete
10555 $\text{Match the formulas of oxides given in Column I with the type of oxide given in Column II and mark the correct option.}$ $\text{Column I}$ $\text{A. Pb}_3\text{O}_4$ $\text{B. N}_2\text{O}$ $\text{C. Mn}_2\text{O}_7$ $\text{D. Bi}_2\text{O}_3$ $\text{Column II}$ $\text{1. Neutral oxide}$ $\text{2. Acidic oxide}$ $\text{3. Basic oxide}$ $\text{4. Mixed oxide}$ 2 211 Recommended Questions $\text{A-1, B-2, C-3, D-4}$, $\text{A-4, B-1, C-2, D-3}$... $\text{A-4, B-1, C-2, D-3}$ Edit Delete
10554 $\text{Match the name of process given in Column I with the name of compound given in Column II and mark the correct option.}$ $\text{Column I:}$ $\text{(a) Pure nitrogen}$ $\text{(b) Haber process}$ $\text{(c) Contact process}$ $\text{(d) Deacons process}$ $\text{Column II:}$ $\text{(i) Chlorine}$ $\text{(ii) Sulphuric acid}$ $\text{(iii) Ammonia}$ $\text{(iv) Sodium azide or Barium azide}$ 2 211 Recommended Questions $\text{(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)}$, $\text{(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)}$... $\text{(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)}$ Edit Delete
10553 $\text{NH}_3 \text{ forms a hydrogen bond but PH}_3 \text{ does not because:}$ 2 211 Recommended Questions $\text{Phosphorus is more electronegative as compared to nitrogen.}$, $\text{Nitrogen is more electronegative as compared to phosphorus.}$... $\text{Nitrogen is more electronegative as compared to phosphorus.}$ Edit Delete
10552 $\text{An element that does not have a d-orbital is:}$ 2 211 Recommended Questions $\text{P}$, $\text{N}$... $\text{N}$ Edit Delete
10551 $\text{The bonding present in nitrogen molecules is:}$ 2 211 Recommended Questions $p\pi - p\pi$, $p\pi - d\pi$... $p\pi - p\pi$ Edit Delete
10550 $\text{PH}_3 \text{ forms bubbles when passed slowly through water but } \text{NH}_3 \text{ gets dissolved in water, because:}$ 2 211 Recommended Questions $\text{NH}_3 \text{ forms an H-bond with water, so it is soluble but } \text{PH}_3 \text{ does not form an H-bond.}$, $\text{NH}_3 \text{ does not form an H-bond with water, so it is soluble but } \text{PH}_3 \text{ does form an H-bond.}$... $\text{NH}_3 \text{ forms an H-bond with water, so it is soluble but } \text{PH}_3 \text{ does not form an H-bond.}$ Edit Delete
10549 $\text{The element from group 15 that forms a strong bond with hydrogen is:}$ 2 211 Recommended Questions $\text{N}$, $\text{P}$... $\text{N}$ Edit Delete
10548 $\text{In a capillary tube, pressure below the curved surface of the water will be:}$ 1 109 Recommended Questions $\text{equal to atmospheric pressure.}$, $\text{equal to upper side pressure.}$... 4 Edit Delete
10547 $\text{If a capillary tube is partially dipped vertically into liquid and the levels of the liquid inside and outside are the same, then the angle of contact is:}$ 1 109 Recommended Questions $90°$, $30°$... 1 Edit Delete
10546 $\text{The wettability of a surface by a liquid depends primarily on:}$ 1 109 Recommended Questions $\text{viscosity}$, $\text{surface tension}$... 4 Edit Delete
10545 $\text{If the surface tension of water is } 0.06 \text{ N/m}^2, \text{ then the capillary rise in a tube of diameter 1 mm is:}$ $(\theta = 0°)$ 1 109 Recommended Questions $1.22 \text{ m}$, $2.44 \text{ cm}$... 2 Edit Delete
10544 $\text{When two drops of water coalesce:}$ $\text{I: total surface area decreases.}$ $\text{II: there is some rise in temperature.}$ $\text{Which of the following is correct?}$ 1 109 Recommended Questions $\text{Both (I) and (II) are wrong statements.}$, $\text{Statement (I) is true but (II) is not true.}$... 4 Edit Delete
10543 $\text{The radius of a soap bubble is increased from R to 2R. Work done in this process (T = surface tension) is:}$ 1 109 Recommended Questions $24\pi R^2 T$, $48\pi R^2 T$... 1 Edit Delete
10542 $\text{A wooden stick 2 m long is floating on the surface of the water. The surface tension of water is 0.07 N/m. By putting soap solution on one side of the stick, the surface tension is reduced to 0.06 N/m. The net force on the stick due to surface tension will be:}$ 1 109 Recommended Questions $0.07 \text{ N}$, $0.06 \text{ N}$... 4 Edit Delete
10541 $\text{Small droplets of liquid are usually more spherical in shape than the larger drops of the same liquid because:}$ 1 109 Recommended Questions $\text{the force of surface tension is equal and opposite to the force of gravity.}$, $\text{the force of surface tension predominates the force of gravity.}$... 2 Edit Delete
10540 $\text{The energy needed to break a drop of radius } R \text{ into } n \text{ drops of radii } r \text{ is given by:}$ 1 109 Recommended Questions $4\pi T(nr^2 - R^2)$, $\frac{4}{3}\pi(r^3n - R^2)$... 1 Edit Delete
10539 $\text{If the excess pressure inside a soap bubble is balanced by an oil column of height of 2 mm, then the surface tension of the soap solution will be:}$ $\text{(the radius of the soap bubble, } r = 1 \text{ cm and density of oil, } d = 0.8 \text{ gm/cm}^3\text{)}$ 1 109 Recommended Questions $3.9 \text{ N/m}$, $3.9 \times 10^{-2} \text{ N/m}$... 2 Edit Delete
10538 $\text{In order to float a ring of area } 0.04 \text{ m}^2 \text{ in a liquid of surface tension } 75 \text{ N/m, the required surface energy will be:}$ 1 109 Recommended Questions $3 \text{ J}$, $6.5 \text{ J}$... 1 Edit Delete
10537 $\text{The property of surface tension of the liquid is due to:}$ 1 109 Recommended Questions $\text{the gravitational force of attraction between the molecules.}$, $\text{the cohesive forces between the molecules.}$... 2 Edit Delete
10536 $\text{A spherical drop of water has a radius of 1 mm. If the surface tension of water is } 70 \times 10^{-3} \text{ N/m, the difference in pressures inside and outside the spherical drop is:}$ 1 109 Recommended Questions $35 \text{ N/m}^2$, $70 \text{ N/m}^2$... 3 Edit Delete
10535 $\text{With an increase in temperature, the viscosity of liquid and gas, respectively will:}$ 1 109 Recommended Questions $\text{increase and increase}$, $\text{increase and decrease}$... 3 Edit Delete
10534 $\text{The velocity of a small ball of mass } m \text{ and density } \rho \text{ when dropped in a container filled with glycerin of density } \sigma \text{ becomes constant after sometime. The viscous force acting on the ball in the final stage is:}$ 1 109 Recommended Questions $mg\left(\frac{\sigma}{\rho}\right)$, $mg\left(1 + \frac{\sigma}{\rho}\right)$... 3 Edit Delete
10533 $\text{With an increase in temperature, the viscosity of:}$ $\text{(a) gases decrease. (b) liquids increase.}$ $\text{(c) gases increase. (d) liquids decrease.}$ $\text{Which of the following options is/are correct?}$ 1 109 Recommended Questions $\text{(b), (c)}$, $\text{(a), (d)}$... 3 Edit Delete
10532 $\text{A spherical ball of radius } r \text{ is falling in a viscous fluid of viscosity } \eta \text{ with a velocity } v. \text{ The retarding viscous force acting on the spherical ball is:}$ 1 109 Recommended Questions $\text{inversely proportional to } r \text{ but directly proportional to velocity } v.$, $\text{directly proportional to both radius } r \text{ and velocity } v.$... 2 Edit Delete
10531 $\text{The pans of a physical balance are in equilibrium. If Air is blown under the right-hand pan then the right-hand pan will:}$ 1 109 Recommended Questions $\text{move up}$, $\text{move down}$... 2 Edit Delete
10530 $\text{The velocity of kerosene oil in a horizontal pipe is 5 m/s. If } g = 10 \text{ m/s}^2\text{, then the velocity head of oil will be:}$ 1 109 Recommended Questions $1.25 \text{ m}$, $12.5 \text{ m}$... 1 Edit Delete
10529 $\text{Equation of continuity is based on:}$ 1 109 Recommended Questions $\text{Conservation of mass}$, $\text{Conservation of energy}$... 1 Edit Delete
10528 $\text{An incompressible fluid flows steadily through a cylindrical pipe which has a radius } 2r \text{ at the point A and a radius } r \text{ at the point B further along the flow direction. If the velocity at the point A is } v\text{, its velocity at the point B is:}$ 1 109 Recommended Questions $2v$, $v$... 4 Edit Delete
10527 $\text{If an incompressible liquid is flowing through a horizontal pipe having branches of area } A, 0.4A, \text{ and } 0.5A \text{ as shown in the figure, then the value of } v \text{ is:}$ 1 109 Recommended Questions $3.2 \text{ m/s}$, $6.4 \text{ m/s}$... 2 Edit Delete
10526 $\text{Given below are two statements:}$ $\text{Assertion (A): A piece of ice floats in water, the level of water remains unchanged when the ice melts completely.}$ $\text{Reason (R): According to Archimedes principle, the loss in weight of the body in the liquid is equal to the weight of the liquid displaced by the immersed part of the body.}$ 1 109 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10525 $\text{A body is just floating on the surface of a liquid. The density of the body is the same as that of the liquid. The body is slightly pushed down. What will happen to the body?}$ 1 109 Recommended Questions $\text{It will slowly come back to its earlier position}$, $\text{It will remain submerged, where it was left}$... 2 Edit Delete
10524 $\text{A boat carrying steel balls is floating on the surface of water in a tank. If the balls are thrown into the tank one by one, how will it affect the level of water?}$ 1 109 Recommended Questions $\text{It will remain unchanged}$, $\text{It will rise}$... 3 Edit Delete
10523 If two pieces of metal when immersed in a liquid have equal upthrust on them, then: 1 109 Recommended Questions Both pieces must have equal weights, Both pieces must have equal densities... 3 Edit Delete
10522 1 109 Recommended Questions Increase, Decrease... 1 Edit Delete
10521 Which of the following diagrams does not represent a streamline flow? 1 109 Recommended Questions 1., 2.... 4 Edit Delete
10520 There are four cylindrical vessels identical in dimensions. If these are filled with equal masses of four different liquids P, Q, R, and S such that their densities are $\rho_P > \rho_Q > \rho_R > \rho_S$, then pressure at the base of vessel will be: 1 109 Recommended Questions $P_P = P_Q = P_R = P_S$, $P_P > P_Q > P_R > P_S$... 1 Edit Delete
10519 A barometer kept in a stationary elevator reads If the elevator starts accelerating up, the reading will be: 1 109 Recommended Questions zero, equal to... 4 Edit Delete
10518 The value of g at a place decreases by 2%. Then, the barometric height of mercury: 1 109 Recommended Questions increases by 2%., decreases by 2%.... 1 Edit Delete
10517 $\text{The area of cross-section of the wider tube shown in the figure is 800 cm}^2\text{. If a mass of 12 kg is placed on the massless piston, then the difference in heights h of the levels of water in the two tubes will be:}$ 1 109 Recommended Questions $\text{10 cm}$, $\text{6 cm}$... 3 Edit Delete
10516 $\text{If pressure at half the depth of a lake is equal to }\frac{2}{3}^{\text{rd}}\text{ the pressure at the bottom of the lake, then the depth of the lake is:}$ 1 109 Recommended Questions $\text{10 m}$, $\text{20 m}$... 2 Edit Delete
10515 $\text{A liquid is poured into three vessels of the same base area and equal heights as shown in the figure, then:}$ 1 109 Recommended Questions $\text{The maximum force on the base will be for the vessel } C\text{.}$, $\text{The maximum force on the base will be for the vessel } B\text{.}$... 4 Edit Delete
10514 $\text{For the figures given below, the correct observation is:}$ 1 109 Recommended Questions $\text{pressure at the bottom of the tank (a) is greater than at the bottom of the tank (b).}$, $\text{pressure at the bottom of the tank (a) is lesser than at the bottom of (b).}$... 4 Edit Delete
10513 $\text{In a capillary tube experiment, a vertical 30 cm long capillary tube is dipped in water. The water rises up to a height of 10 cm due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes:}$ 1 109 Recommended Questions $\text{10 cm}$, $\text{20 cm}$... 3 Edit Delete
10512 $\text{Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by } 75 \times 10^{-4} \text{ N force due to the weight of the liquid. If the surface tension of water is } 6 \times 10^{-2} \text{ Nm}^{-1}\text{, the inner circumference of the capillary must be:}$ 1 109 Recommended Questions $1.25 \times 10^{-2} \text{ m}$, $0.50 \times 10^{-2} \text{ m}$... 4 Edit Delete
10511 $\text{A capillary tube of radius } r \text{ is immersed in water and water rises in it to a height } h\text{. The mass of the water in the capillary is 5 g. Another capillary tube of radius } 2r \text{ is immersed in water. The mass of water that will rise in this tube is:}$ 1 109 Recommended Questions $\text{5.0 g}$, $\text{10.0 g}$... 2 Edit Delete
10510 $\text{Three liquids of densities } \rho_1, \rho_2 \text{ and } \rho_3 \text{ (with } \rho_1 > \rho_2 > \rho_3\text{), having the same value of surface tension } T\text{, rise to the same height in three identical capillaries. The angles of contact } \theta_1, \theta_2 \text{ and } \theta_3 \text{ obey:}$ 1 109 Recommended Questions $\frac{\pi}{2} > \theta_1 > \theta_2 > \theta_3 \geq 0$, $0 \leq \theta_1 < \theta_2 < \theta_3 < \frac{\pi}{2}$... 2 Edit Delete
10509 $\text{If the capillary experiment is performed in a vacuum, then for a liquid the capillary will:}$ 1 109 Recommended Questions $\text{rise}$, $\text{remain the same}$... 2 Edit Delete
10508 $\text{Given below are two statements:}$ $\textbf{Assertion (A):} \text{ When height of a tube is less than liquid rise in the capillary tube, the liquid does not overflow.}$ $\textbf{Reason (R):} \text{ Product of radius of meniscus and height of liquid in capillary tube always remains constant.}$ 1 109 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10507 $\text{Water rises to a height h in a capillary at the surface of earth. On the surface of the moon, the height of water column in the same capillary will be:}$ 1 109 Recommended Questions $6\text{h}$, $\frac{1}{6}\text{h}$... 1 Edit Delete
10506 $\text{A liquid filled in a container has a plane meniscus. If } \theta \text{ is the angle of contact, then:}$ 1 109 Recommended Questions $\theta = 0°$, $\theta = 90°$... 2 Edit Delete
10505 $\text{Water rises to height } h \text{ in a capillary tube. If the length of the capillary tube above the surface of water is made less than } h, \text{ then:}$ 1 109 Recommended Questions $\text{water does not rise at all.}$, $\text{water rises up to the top of the capillary tube, then starts overflowing like a fountain.}$... 3 Edit Delete
10504 $\text{Which of the following graphs best represents the variation of capillary rise of a liquid with the radius of the capillary tube?}$ 1 109 Recommended Questions $\text{Graph 1: Linear increasing relationship between } h \text{ and } r$, $\text{Graph 2: Exponential increasing relationship between } h \text{ and } r$... 4 Edit Delete
10503 $\text{There is a horizontal film of soap solution. On it, a thread is placed in the form of a loop. The film is pierced inside the loop and the thread becomes a circular loop of radius } R. \text{ If the surface tension of the loop is } T, \text{ then what will be the tension in the thread?}$ 1 109 Recommended Questions $\pi R^2 / T$, $\pi R^2 T$... 4 Edit Delete
10502 $\text{A soap bubble, having a radius of 1 mm, is blown from a detergent solution having a surface tension of } 2.5 \times 10^{-2} \text{ N/m. The pressure inside the bubble equals at a point } Z_0 \text{ below the free surface of the water in a container. Taking } g = 10 \text{ m/s}^2, \text{ the density of water } = 10^3 \text{ kg/m}^3, \text{ the value of } Z_0 \text{ is:}$ 1 109 Recommended Questions $0.5 \text{ cm}$, $100 \text{ cm}$... 4 Edit Delete
10501 $\text{A liquid drop at temperature T, isolated from its surroundings, breaks into a number of droplets. The temperature of the droplets will be—}$ 1 109 Recommended Questions $\text{equal to T}$, $\text{greater than T}$... 3 Edit Delete
10500 $\text{A soap bubble is blown with the help of a mechanical pump at the mouth of a tube. The pump produces a certain increase per minute in the volume of the bubble, irrespective of its internal pressure. The graph between the pressure inside the soap bubble and time t will be:}$ 1 109 Recommended Questions $\text{Graph showing pressure P decreasing exponentially with time t (curved downward)}$, $\text{Graph showing pressure P increasing linearly with time t (straight line upward)}$... 1 Edit Delete
10499 $\text{An air bubble of radius } r \text{ in water is at a certain depth below the water surface. If } P \text{ is the pressure inside the bubble, then the depth below the water surface is:}$ $\text{(}P_0 = \text{atmospheric pressure, } \rho = \text{density of water, } T = \text{surface tension of water)}$ 1 109 Recommended Questions $\frac{P - P_0}{\rho g} - \frac{4T}{r\rho g}$, $\frac{P + P_0}{\rho g} + \frac{2T}{r\rho g}$... 3 Edit Delete
10498 $\text{A rectangular film of liquid is extended from (4 cm × 2 cm) to (5 cm × 4 cm). If the work done is } 3 \times 10^{-4} \text{ J, the value of the surface tension of the liquid is:}$ 1 109 Recommended Questions $0.25 \text{ N/m}$, $0.125 \text{ N/m}$... 2 Edit Delete
10497 $\text{The surface tension of a liquid is 5 N m}^{-1}\text{. If a film is held on a ring of area 0.02 m}^2\text{, then its total surface energy is:}$ 1 109 Recommended Questions $3 \times 10^{-2} \text{ J}$, $2 \times 10^{-1} \text{ J}$... 2 Edit Delete
10496 $\text{A certain number of spherical drops of a liquid of radius } r \text{ coalesce to form a single drop of radius } R \text{ and volume } V\text{. If } T \text{ is the surface tension of the liquid, then: Energy} = 4VT\left(\frac{1}{r} - \frac{1}{R}\right) \text{ is released}$ 1 109 Recommended Questions $\text{Energy} = 4VT\left(\frac{1}{r} - \frac{1}{R}\right) \text{ is released}$, $\text{Energy} = 3VT\left(\frac{1}{r} + \frac{1}{R}\right) \text{ is released}$... 3 Edit Delete
10495 $\text{Two soap bubbles are connected by a tube as shown in the figure. Which of the following statement is true?}$ 1 109 Recommended Questions $\text{The volume of A will increase.}$, $\text{The volume of A will remain constant.}$... 3 Edit Delete
10494 $\text{An iron sphere is dropped into a viscous liquid. Which of the following represents its acceleration } (a) \text{ versus time } (t) \text{ graph?}$ 1 109 Recommended Questions $\text{Graph showing acceleration starting from zero and increasing asymptotically to a constant value}$, $\text{Graph showing acceleration increasing linearly with time}$... 4 Edit Delete
10493 $\text{A small sphere of radius } r \text{ falls from rest in a viscous liquid. As a result, heat is produced due to the viscous force. The rate of production of heat when the sphere attains its terminal velocity is proportional to:}$ 1 109 Recommended Questions $r^3$, $r^2$... 3 Edit Delete
10492 $\text{If a small drop of water falls from rest through a large height } h \text{ in air, then the final velocity is:}$ 1 109 Recommended Questions $\propto \sqrt{h}$, $\propto h$... 4 Edit Delete
10491 $\text{A small tiny water droplet is falling towards earth at a uniform speed of 1 cm/s. When 27 such identical droplets combine together to form a bigger drop, then with what uniform velocity will this bigger drop fall?}$ 1 109 Recommended Questions $27 \text{ cm/s}$, $9 \text{ cm/s}$... 2 Edit Delete
10490 $\text{A small spherical solid ball is dropped in a viscous liquid. Its journey in the liquid is best described in the figure by:}$ 1 109 Recommended Questions $\text{curve A}$, $\text{curve B}$... 3 Edit Delete
10489 $\text{Two small spherical metal balls, having equal masses, are made from materials of densities } \rho_1 \text{ and } \rho_2 \text{ such that } \rho_1 = 8\rho_2 \text{ and having radii of 1 mm and 2 mm, respectively. They are made to fall vertically (from rest) in a viscous medium whose coefficient of viscosity equals } \eta \text{ and whose density is } 0.1\rho_2. \text{ The ratio of their terminal velocities would be:}$ 1 109 Recommended Questions $\frac{79}{72}$, $\frac{19}{36}$... 4 Edit Delete
10488 $\text{A square plate of 0.1 m side moves parallel to a second plate with a velocity of 0.1 m/s, both plates being immersed in water. If the viscous force is 0.002 N and the coefficient of viscosity is 0.01 poise, then the distance between the plates in m is:}$ 1 109 Recommended Questions $0.1$, $0.05$... 4 Edit Delete
10487 $\text{A metal block of area 0.10 m}^2 \text{ is connected to a 0.010 kg mass via a string that passes over an ideal pulley (considered massless and frictionless), as in the figure below. A liquid film with a thickness of 0.30 mm is placed between the block and the table. When released the block moves to the right with a constant speed of 0.085 m/s. The coefficient of viscosity of the liquid is:}$ 1 109 Recommended Questions $4.45 \times 10^{-2} \text{ Pa/s}$, $4.45 \times 10^{-3} \text{ Pa/s}$... 4 Edit Delete
10486 $\text{The velocity of a small ball of mass m and density } \rho \text{ when dropped in a container filled with glycerin of density } \sigma \text{ becomes constant after sometime. The viscous force acting on the ball in the final stage is:}$ 1 109 Recommended Questions $mg\left(\frac{\sigma}{\rho}\right)$, $mg\left(1 + \frac{\sigma}{\rho}\right)$... 3 Edit Delete
10485 $\text{The relative velocity of two adjacent layers of a liquid is 6 cm/s and the perpendicular distance between layers is 0.1 mm. The velocity gradient for liquid (in per second) is:}$ 1 109 Recommended Questions $6$, $0.6$... 4 Edit Delete
10484 $\text{An ideal fluid is flowing in a steady-state from section A to B through a pipe in a vertical plane as shown. Select the incorrect statement.}$ 1 109 Recommended Questions $\text{Total energy per unit volume is the same at both sections A and B.}$, $\text{The incoming flow rate at A is equal to the outgoing flow rate at B.}$... 3 Edit Delete
10483 $\text{Water flows through a horizontal tube as shown in figure. If the difference in heights of water column in vertical tubes is 80 cm and the area of cross-section at A and B are 5 cm}^2 \text{ and 3 cm}^2 \text{ respectively, then the rate of flow of water at A( in cc/sec) is:-}$ $[\text{Take } g = 10 \text{ m/s}^2]$ 1 109 Recommended Questions $15 \times 10^2$, $15 \times 10^3$... 1 Edit Delete
10482 $\text{Fluid flows through a pipe in a horizontal plane. The fluid has a relative density of 0.9 and its velocity at P (where cross-section area is A) is 4 m/s. What is its pressure at Q? (where cross-section area is }\frac{A}{4}\text{, The pressure at P is }2.8 \times 10^5\text{ Pa)}$ 1 109 Recommended Questions $2.36 \times 10^5\text{ Pa}$, $3.88 \times 10^5\text{ Pa}$... 4 Edit Delete
10481 $\text{From the given diagram, the speed with which water leaves the tube B of small diameter is-}$ 1 109 Recommended Questions $\sqrt{2(gh)_1}$, $\sqrt{2(gh)_2}$... 2 Edit Delete
10480 $\text{A sniper fires a rifle bullet into a gasoline tank making a hole 53.0 m below the surface of gasoline. The tank was sealed at 3.10 atm. The stored gasoline has a density of 660 kgm}^{-3}\text{. The velocity with which gasoline begins to shoot out of the hole will be:}$ 1 109 Recommended Questions $27.8 \text{ ms}^{-1}$, $41.0 \text{ ms}^{-1}$... 2 Edit Delete
10479 $\text{A water tank is kept at a height H above the ground and the tank contains depth H of water as shown. Find the maximum possible range of water current, if there exists a small hole on the sidewall of the tank.}$ 1 109 Recommended Questions $2H$, $\frac{3H}{2}$... 1 Edit Delete
10478 $\text{An L-shaped tube with a small orifice is held in a water stream as shown in fig. The upper end of the tube is 10.6 cm above the surface of water. What will be the height of the jet of water coming from the orifice? Velocity of water stream is 2.45 m/s.}$ 1 109 Recommended Questions $\text{Zero}$, $20.0 \text{ cm}$... 2 Edit Delete
10477 $\text{Water flows through a frictionless duct with a cross-section varying as shown in the figure. Pressure } P \text{ at points along the axis is represented by:}$ 1 109 Recommended Questions $\text{Graph showing pressure decreasing then leveling off}$, $\text{Graph showing pressure increasing then leveling off}$... 1 Edit Delete
10476 $\text{There is a hole in the bottom of a tank having water. If the total pressure at the bottom is 3 atm (1 atm = } 10^5 \text{ N/m}^2\text{), then the velocity of water flowing from the hole is:}$ 1 109 Recommended Questions $\sqrt{400} \text{ m/s}$, $\sqrt{600} \text{ m/s}$... 1 Edit Delete
10475 $\text{Find the rate of flow of glycerin of density } 1.25 \times 10^3 \text{ kg/m}^3 \text{ through the conical section of a pipe, if the radii of its ends are 0.1 m and 0.04 m and the pressure drop across its length is 10 N/m}^2\text{.}$ 1 109 Recommended Questions $3.14 \times 10^{-4} \text{ m}^3\text{/s}$, $6.28 \times 10^{-4} \text{ m}^3\text{/s}$... 2 Edit Delete
10474 $\text{A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m}^2\text{. Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be: } (\rho_{\text{air}} = 1.2 \text{ kg/m}^3)$ 1 109 Recommended Questions $4.8 \times 10^5 \text{ N, downwards}$, $4.8 \times 10^5 \text{ N, upwards}$... 3 Edit Delete
10473 $\text{An engine pumps water continuously through a hose. Water leaves the hose with a velocity } v \text{ and } m \text{ is the mass per unit length of the water jet. What is the rate at which kinetic energy is imparted to water?}$ 1 109 Recommended Questions $\frac{1}{2}mv^3$, $mv^3$... 1 Edit Delete
10472 $\text{A tank has an orifice near its bottom. The volume of the liquid flowing per second out of the orifice does not depend upon:}$ 1 109 Recommended Questions $\text{the area of the orifice.}$, $\text{the height of the liquid level above the orifice.}$... 3 Edit Delete
10471 $\text{The speed of flow past the lower surface of a wing of an airplane is 50 m/s. What speed of flow over the upper surface will give a dynamic lift of 1000 Pa?}$ $\text{(density of air } 1.3 \text{ kg/m}^3\text{)}$ 1 109 Recommended Questions $25.55 \text{ m/s}$, $63.55 \text{ m/s}$... 2 Edit Delete
10470 $\text{In a horizontal pipe line the pressure falls by 16 Nm}^{-2} \text{ between two points separated by a distance of 2 km. Density of oil is 800 kg m}^{-3}\text{. Change in kinetic energy per kg of the oil flowing in the tube is:}$ 1 109 Recommended Questions $2 \times 10^3 \text{ J/kg}$, $2 \times 10^2 \text{ J/kg}$... 3 Edit Delete
10469 $\text{The water flows through a frictionless tube with a varying cross-section as shown in the figure. The variation of pressure } P \text{ at the point } x \text{ along the axis is roughly given by:}$ 1 109 Recommended Questions $\text{Graph showing stepped pressure profile}$, $\text{Graph showing constant pressure profile}$... 3 Edit Delete
10468 $\text{A small hole of an area of cross-section } 2 \text{ mm}^2 \text{ is present near the bottom of a fully filled open tank of height } 2 \text{ m. Taking } (g = 10 \text{ m/s}^2), \text{ the rate of flow of water through the open hole would be nearly:}$ 1 109 Recommended Questions $6.4 \times 10^{-6} \text{ m}^3/\text{s}$, $12.6 \times 10^{-6} \text{ m}^3/\text{s}$... 2 Edit Delete
10467 $\text{There is an orifice at some depth in the water tank. Absolute pressure at the level of the orifice in the water tank is } 4 \text{ atmospheric pressure. The density of water is } 10^3 \text{ kg/m}^3 \text{ and } 1 \text{ atm pressure} = 10^5 \text{ N/m}^2. \text{ The speed of water coming out of the orifice is:}$ 1 109 Recommended Questions $10 \text{ m/s}$, $20 \text{ m/s}$... 3 Edit Delete
10466 The following figure shows the flow of liquid through a horizontal pipe. Three tubes $A$, $B$ and $C$ are connected to the pipe. The radii of the tubes $A$, $B$ and $C$ at the junction are respectively $2 ext{ cm}$, $1 ext{ cm}$ and $2 ext{ cm}$. It can be said that: 1 109 Recommended Questions The height of the liquid in the tube $A$ is maximum., The height of the liquid in the tubes $A$ and $B$ is the same.... 4 Edit Delete
10465 A horizontal pipe line carries water in a streamline flow. At a point along the pipe where cross-sectional area is $10 \text{ cm}^2$, the velocity of water is $1\text{ m/s}$ and pressure is $2000\text{ Pa}$. The pressure of water at another point where cross-sectional area is $5\text{ cm}^2$, is: (Density of water=$1000\text{ kg/m}^3$) 1 109 Recommended Questions $250\text{ Pa}$, $500\text{ Pa}$... 2 Edit Delete
10464 $\text{The pressure of water in a water pipe when tap is opened and closed are respectively } 3 \times 10^5 \text{ Nm}^{-2} \text{ and } 3.5 \times 10^5 \text{ Nm}^{-2}. \text{ With open tap, the velocity of water flowing is:}$ 1 109 Recommended Questions $10 \text{ ms}^{-1}$, $5 \text{ ms}^{-1}$... 1 Edit Delete
10463 A tank is filled with water up to a height $H$. The water is allowed to come out of a hole $P$ in one of the walls at a depth $D$ below the surface of the water. The horizontal distance $x$ in terms of $H$ and $D$ is: 1 109 Recommended Questions $x = \sqrt{D(H - D)}$, $x = \sqrt{\frac{D(H - D)}{2}}$... 3 Edit Delete
10462 $\text{A large open tank with a square hole of side } 0.1 \text{ cm in the wall at a depth of } 0.2 \text{ m from the top is completely filled with a liquid. The rate of flow of liquid (in cm}^3\text{/s) through the hole will be:}$ 1 109 Recommended Questions $1$, $2$... 2 Edit Delete
10461 The diameter of a syringe is $4\text{ mm}$ and the diameter of its nozzle (opening) is $1\text{ mm}$. The syringe is placed on the table horizontally at a height of $1.25\text{ m}$. If the piston is moved at a speed of $0.5\text{ m/s}$, then considering the liquid in the syringe to be ideal, the horizontal range of liquid is: ($g = 10\text{ m/s}^2$) 1 109 Recommended Questions $4\text{ m}$, $8\text{ m}$... 1 Edit Delete
10460 $\text{Water flows through a frictionless duct with a cross-section varying as shown in the figure. Pressure p at points along the axis is represented by:}$ 1 109 Recommended Questions $\text{Graph 1: Pressure decreases in the converging section, remains low in the throat, then increases in the diverging section}$, $\text{Graph 2: Pressure increases in the converging section, remains high in the throat, then decreases in the diverging section}$... 1 Edit Delete
10459 $\text{The cylindrical tube of a spray pump has radius } R\text{, one end of which has } n \text{ fine holes, each of radius } r\text{. If the speed of the liquid in the tube is } v\text{, then the speed of ejection of the liquid through the holes will be:}$ 1 109 Recommended Questions $\frac{vR^2}{n^2r^2}$, $\frac{vR^2}{nr^2}$... 2 Edit Delete
10458 From the given diagram, what is the velocity $v_3$? 1 109 Recommended Questions $4$ m/s, $3$ m/s... 3 Edit Delete
10457 $\text{In a horizontal pipe of a non-uniform cross-section, water flows with a velocity of } 1 \text{ ms}^{-1} \text{ at a point where the diameter of the pipe is } 20 \text{ cm. The velocity of water (ms}^{-1}\text{) at a point where the diameter of the pipe is } 5 \text{ cm is:}$ 1 109 Recommended Questions $8$, $16$... 2 Edit Delete
10456 A cube floats both in water and in a liquid of specific gravity of $0.8$. Therefore, 1 109 Recommended Questions (a) and (c) both are correct., only (d) is correct.... 1 Edit Delete
10455 $\text{A metallic sphere with an internal cavity weighs 40 gwt in air and 20 gwt in water. If the density of the material with the cavity is } 8 \text{ gm/cm}^3\text{, then the volume of the cavity is:}$ 1 109 Recommended Questions $0 \text{ cm}^3$, $5 \text{ cm}^3$... 4 Edit Delete
10454 A hemispherical bowl just floats without sinking in a liquid of density $1.2 \times 10^3 \text{ kg/m}^3$. If the outer diameter and the density of the material of the bowl are $1 \text{ m}$ and $2 \times 10^4 \text{ kg/m}^3$ respectively, then the inner diameter of the bowl will be: 1 109 Recommended Questions $0.94 \text{ m}$, $0.97 \text{ m}$... 3 Edit Delete
10453 $\text{A solid sphere of density } \eta \text{ (} > 1\text{) times lighter than water is suspended in a water tank by a string tied to its base as shown in fig. If the mass of the sphere is m, then the tension in the string is given by:}$ 1 109 Recommended Questions $\left(\frac{\eta - 1}{\eta}\right)mg$, $\eta mg$... 4 Edit Delete
10452 Two bodies are in equilibrium when suspended in water from the arms of a balance. The mass of one body is $36 \text{ g}$ and its density is $9 \text{ g/cm}^3$. If the mass of the other is $48 \text{ g}$, its density in $(\text{g/cm}^3)$ will be: 1 109 Recommended Questions $\frac{4}{3}$, $\frac{3}{2}$... 3 Edit Delete
10451 $\text{A concrete sphere of radius R has a cavity of radius r which is packed with sawdust. The specific gravities of concrete and sawdust are respectively 2.4 and 0.3. For this sphere to float with its entire volume submerged underwater, the ratio of mass of concrete to mass of sawdust will be:}$ 1 109 Recommended Questions $8$, $4$... 2 Edit Delete
10450 A solid is suspended from an independent support in a liquid placed on a weighing machine, due to which the weight of the liquid: 1 109 Recommended Questions Increases, Decreases... 1 Edit Delete
10449 $\text{A block of ice floats on a liquid of density } 1.2 \text{ g/cm}^3 \text{ in a beaker. The level of liquid when ice completely melts:}$ 1 109 Recommended Questions $\text{Remains same}$, $\text{Rises}$... 2 Edit Delete
10448 A candle of diameter $d$ is floating on a liquid in a cylindrical container of diameter $D$ ($D \gg d$) as shown in the figure. If it is burning at the rate of $2 \text{ cm/hour}$ then the top of the candle will: 1 109 Recommended Questions Remain at the same height, \text{Fall at the rate of } 1 \text{ cm/hour}... 2 Edit Delete
10447 $\text{A wooden block with a coin placed on its top, floats in water as shown in fig. The distance } l \text{ and } h \text{ are shown there. After some time the coin falls into the water. Then:}$ 1 109 Recommended Questions $l \text{ decreases and } h \text{ increases}$, $l \text{ increases and } h \text{ decreases}$... 4 Edit Delete
10446 Two non-mixing liquids of densities $\rho$ and $n\rho$ ($n > 1$) are put in a container. The height of each liquid is $h$. A solid cylinder floats with its axis vertical and length $pL(p < 1)$ in the denser liquid. The density of the cylinder is $d$. The density $d$ is equal to: 1 109 Recommended Questions $[2 + (n + 1)p]\rho$, $[2 + (n - 1)p]\rho$... 3 Edit Delete
10445 $\text{The reading of a spring balance when a block is suspended from it in the air is 60 N. This reading is changed to 40 N when the block is submerged in water. The specific gravity of the block, therefore, must be:}$ 1 109 Recommended Questions $3$, $2$... 1 Edit Delete
10444 A block weighs $5 \text{ N}$ in the air and $4.5 \text{ N}$ in a liquid of specific gravity $0.5$. Its weight in water will be: 1 109 Recommended Questions $3.5 \text{ N}$, $4.0 \text{ N}$... 2 Edit Delete
10443 $\text{A body of density } 0.7 \text{ g/cm}^3 \text{ floats on a lake of water. The fraction of the body that is outside water is:}$ 1 109 Recommended Questions $30\%$, $70\%$... 1 Edit Delete
10442 When a man sits on a boat of length $2 \text{ m}$ and breadth $1 \text{ m}$ floating on a lake, the boat sinks by $2 \text{ cm}$. The mass of the man is: 1 109 Recommended Questions $25 \text{ kg}$, $40 \text{ kg}$... 2 Edit Delete
10441 $\text{If two iron balls when fully immersed in water experience thrust force in the ratio of } 1 : 2, \text{ then the ratio of the masses of the balls will be:}$ 1 109 Recommended Questions $1 : 1$, $1 : 2$... 2 Edit Delete
10440 An iceberg of density $900 \text{ kg/m}^3$ is floating in the water of density $1000 \text{ kg/m}^3$. The percentage of the volume of ice cube outside the water is: 1 109 Recommended Questions $20\%$, $35\%$... 3 Edit Delete
10439 $\text{Three liquids of densities } d, 2d \text{ and } 3d \text{ are mixed in equal proportions of weights. The relative density of the mixture is:}$ 1 109 Recommended Questions $\frac{11d}{7}$, $\frac{18d}{11}$... 2 Edit Delete
10438 $\text{Given below are two statements:}$ $\text{Assertion (A): Specific gravity of a fluid is a dimensionless quantity.}$ $\text{Reason (R): It is the ratio of the density of the fluid to the density of water.}$ 1 109 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10437 A tank is filled with water up to a height $h$ and the pressure at the bottom of the tank is $3P$ where $P$ is the atmospheric pressure. The height of a point from the bottom of the tank where pressure is $\frac{11P}{5}$ is: 1 109 Recommended Questions $\frac{2h}{5}$, $\frac{3h}{5}$... 1 Edit Delete
10436 The heart of a man pumps $5 \text{ L}$ of blood through the arteries per minute at a pressure of $150 \text{ mm}$ of mercury. If the density of mercury is $13.6 \times 10^3 \text{ kg/m}^3$ and $g = 10 \text{ m/s}^2$, then the power of heart in watt is: 1 109 Recommended Questions $1.70$, $2.35$... 1 Edit Delete
10435 $\text{A triangular lamina of area A and height h is immersed in a liquid of density } \rho \text{ in a vertical plane with its base on the surface of the liquid. The thrust on the lamina is:}$ 1 109 Recommended Questions $\frac{1}{2}A\rho gh$, $\frac{1}{3}A\rho gh$... 2 Edit Delete
10434 A liquid is filled in a container as shown in the figure. The force exerted by the liquid on the base of the container must be: 1 109 Recommended Questions Equal to the weight of the liquid, More than the weight of the liquid... 2 Edit Delete
10433 $\text{A U tube is partially filled with water. Oil which is immiscible in water is poured into one side until the water rises by 25 cm on the other side. If the oil level is 12.5 cm higher than the water level, then the relative density of the oil is:}$ 1 109 Recommended Questions $0.3$, $0.5$... 3 Edit Delete
10432 A mercury-filled U-tube arrangement is connected to a bulb containing a gas. Atmospheric pressure is $1.012 \times 10^5 \text{ Pa}$ and $H = 0.05 \text{ m}$. Then: 1 109 Recommended Questions gauge pressure at $\text{R}$ is nil., gauge pressure at $\text{R}$ is $6.56 \times 10^3 \text{ Pa}$.... 1 Edit Delete
10431 $\text{An inverted bell lying at the bottom of a lake 47.6 m deep has 50 cm}^3 \text{ of air trapped in it. The bell is brought to the surface of the lake. The volume of the trapped air will be: (atmospheric pressure = 70 cm of Hg and density of Hg = 13.6 g/cm}^3\text{)}$ 1 109 Recommended Questions $350 \text{ cm}^3$, $300 \text{ cm}^3$... 2 Edit Delete
10430 \text{A vertical U-tube of uniform inner cross-section contains mercury in both its arms. A glycerin (density } = 1.3\text{ g/cm}^3\text{) column of length }10\text{ cm is introduced into one of its arms. Oil of density }0.8\text{ g/cm}^3\text{ is poured into the other arm until the upper surfaces of the oil and glycerin are at the same horizontal level. The length of the oil column is:} \text{(density of mercury } = 13.6\text{ g/cm}^3\text{)} 1 109 Recommended Questions $10.4 \text{ cm}$, $8.2 \text{ cm}$... 4 Edit Delete
10429 $\text{A siphon in use is demonstrated in the following figure. The density of the liquid flowing in the siphon is 1.5 g/cc. The pressure difference between the point P and S will be:}$ 1 109 Recommended Questions $10^5 \text{ N/m}^2$, $2 \times 10^5 \text{ N/m}^2$... 3 Edit Delete
10428 The height of a mercury barometer is $75 \text{ cm}$ at sea level and $50 \text{ cm}$ at the top of a hill. The ratio of the density of mercury to that of air is $10^4$. The height of the hill is: 1 109 Recommended Questions $250 \text{ m}$, $2.5 \text{ km}$... 2 Edit Delete
10427 $\text{A diver is 10 m below the surface of the water. The approximate pressure experienced by the diver is:}$ 1 109 Recommended Questions $10^5 \text{ Pa}$, $2 \times 10^5 \text{ Pa}$... 2 Edit Delete
10426 \text{Given:} \text{Wing area: } A = 120 \text{ m}^2 \text{Pressure difference: } \Delta P = 2.5 \text{ kPa} = 2500 \text{ Pa} \text{Acceleration due to gravity: } g = 10 \text{ m/s}^2 \text{Solution:} \text{For level flight, lift force equals weight:} F_{\text{lift}} = \Delta P \times A = mg \text{Therefore: } m = \frac{\Delta P \times A}{g} m = \frac{2500 \times 120}{10} = \frac{300000}{10} = 30000 \text{ kg} \text{Mass of airplane} = 30 \text{ tonnes} 1 109 Recommended Questions $2 \times 10^3 \text{ kg}$, $3 \times 10^4 \text{ kg}$... 2 Edit Delete
10425 $\text{When strain is produced in a body within elastic limit, its internal energy:}$ 1 108 Recommended Questions $\text{Remains constant}$, $\text{Decreases}$... 3 Edit Delete
10424 $\text{A wire of negligible mass and length 2 m is stretched by hanging a 20 kg load to its lower end keeping its upper end fixed. If work done in stretching the wire is 50 J, then the strain produced in the wire will be:}$ 1 108 Recommended Questions $0.5$, $0.1$... 4 Edit Delete
10423 $\text{If the force constant of a wire is } K\text{, the work done in increasing the length of the wire by } l \text{ is:}$ 1 108 Recommended Questions $\frac{Kl}{2}$, $Kl$... 3 Edit Delete
10422 $\text{The work done per unit volume to stretch the length of a wire by 1\% with a constant cross-sectional area will be:}$ $(Y = 9 \times 10^{11} \text{ N/m}^2)$ 1 108 Recommended Questions $9 \times 10^{11} \text{ J}$, $4.5 \times 10^{7} \text{ J}$... 2 Edit Delete
10421 $\text{The ratio of Young's modulus of the material of two wires is 2 : 3. If the same stress is applied on both, then the ratio of elastic energy per unit volume will be:}$ 1 108 Recommended Questions $3 : 2$, $2 : 3$... 1 Edit Delete
10420 $\text{A 5 m long wire is fixed to the ceiling. A weight of 10 kg is hung at the lower end and is 1 m above the floor. The wire was elongated by 1 mm. The energy stored in the wire due to stretching is:}$ 1 108 Recommended Questions $\text{zero}$, $0.05 \text{ J}$... 2 Edit Delete
10419 $\text{Given below are two statements:}$ $\text{Assertion (A): Soft steel can be made red hot by continued hammering on it, but hard steel cannot.}$ $\text{Reason (R): Energy transfer in the case of soft is large as in hard steel.}$ 1 108 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10418 $\text{The Young's modulus of a wire is } Y. \text{ If the energy per unit volume is } E, \text{ then the strain will be:}$ 1 108 Recommended Questions $\sqrt{\frac{2E}{Y}}$, $\sqrt{2EY}$... 1 Edit Delete
10417 $\text{A material has Poisson's ratio of 0.5. If a uniform rod made of it suffers a longitudinal strain of } 2 \times 10^{-3}, \text{ what is the percentage increase in volume?}$ 1 108 Recommended Questions $2\%$, $4\%$... 3 Edit Delete
10416 The increase in the length of a wire on stretching is 0.04%. If Poisson's ratio for the material of wire is 0.5, then the diameter of the wire will: 1 108 Recommended Questions decrease by 0.02%., decrease by 0.01%.... 1 Edit Delete
10415 $\text{When a spiral spring is stretched by suspending a load on it, the strain produced is called:}$ 1 108 Recommended Questions $\text{Shearing}$, $\text{Longitudinal}$... 4 Edit Delete
10414 $\text{Given below are two statements:}$ $\text{Assertion (A): The stretching of a spring is determined by the shear modulus of the material of the spring.}$ $\text{Reason (R): A coil spring of copper has more tensile strength than a steel spring of the same dimensions.}$ 1 108 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
10413 $\text{The density of metal at normal pressure is } \rho. \text{ Its density when it is subjected to an excess pressure } P \text{ is } \rho'. \text{ If } B \text{ is the bulk modulus of the metal, the ratio } \frac{\rho'}{\rho} \text{ is:}$ 1 108 Recommended Questions $\frac{1}{1-\frac{P}{B}}$, $1 + \frac{P}{B}$... 1 Edit Delete
10412 \text{Given below are two statements:} \text{Assertion (A): Bulk modulus of elasticity } B \text{ represents the incompressibility of the material.} \text{Reason (R): } B = -\frac{\Delta p}{\Delta V/V}\text{, where symbols have their usual meaning.} 1 108 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10411 $\text{Choose the correct statement.}$ 1 108 Recommended Questions $\text{Breaking stress does not depend on the area of cross-section.}$, $B_{\text{solid}} > B_{\text{gas}} > B_{\text{liquid}} \text{ where } B \text{ is the bulk modulus.}$... 1 Edit Delete
10410 $\text{A uniform cube is subjected to volume compression. If each side is decreased by 1\%, then bulk strain is:}$ 1 108 Recommended Questions $0.01$, $0.06$... 4 Edit Delete
10409 $\text{The compressibility of water is } 4 \times 10^{-5} \text{ per unit atmospheric pressure. The decrease in volume of 100 cubic centimeter of water under a pressure of 100 atmosphere will be:}$ 1 108 Recommended Questions $0.4 \text{ cc}$, $4 \times 10^{-5} \text{ cc}$... 1 Edit Delete
10408 $\text{The modulus of rigidity of the ideal liquid is:}$ 1 108 Recommended Questions $\text{infinity}$, $\text{zero}$... 2 Edit Delete
10407 $\text{A ball falling into a lake of depth 200 m shows a 0.1\% decrease in its volume at the bottom. What is the bulk modulus of the material of the ball?}$ 1 108 Recommended Questions $19.6 \times 10^8 \text{ N/m}^2$, $19.6 \times 10^{-10} \text{ N/m}^2$... 1 Edit Delete
10406 $\text{The bulk modulus of water is } 2 \times 10^9 \text{ N/m}^2\text{. The increase in pressure required to decrease the volume of the water sample by 0.1\% is:}$ 1 108 Recommended Questions $4 \times 10^6 \text{ N/m}^2$, $2 \times 10^6 \text{ N/m}^2$... 2 Edit Delete
10405 $\text{A vessel of } 1 \times 10^{-3} \text{ m}^3 \text{ volume contains oil. When a pressure of } 1.2 \times 10^5 \text{ N/m}^2 \text{ is applied on it, then volume decreases by } 0.3 \times 10^{-6} \text{ m}^3\text{. The bulk modulus of oil is:}$ 1 108 Recommended Questions $1 \times 10^6 \text{ N/m}^2$, $2 \times 10^7 \text{ N/m}^2$... 3 Edit Delete
10404 $\text{The bulk modulus of rubber is } 9.8 \times 10^8 \text{ N/m}^2\text{. To what depth a rubber ball be taken in a lake so that its volume is decreased by 0.1\%?}$ 1 108 Recommended Questions $25 \text{ m}$, $100 \text{ m}$... 2 Edit Delete
10403 $\text{Overall changes in volume and radius of a uniform cylindrical steel wire are 0.2\% and 0.002\% respectively when subjected to some suitable force. Longitudinal tensile stress acting on the wire is:}$ $(2.0 \times 10^{11} \text{ Nm}^{-2})$ 1 108 Recommended Questions $3.2 \times 10^{11} \text{ Nm}^{-2}$, $3.2 \times 10^{7} \text{ Nm}^{-2}$... 4 Edit Delete
10402 $\text{A uniform cylinder rod of length } L, \text{ cross-sectional area } A \text{ and Young's modulus } Y \text{ is acted upon by the forces, as shown in the figure. The elongation of the rod is:}$ 1 108 Recommended Questions $\frac{3FL}{5AY}$, $\frac{2FL}{5AY}$... 4 Edit Delete
10401 $\text{Copper of fixed volume } V \text{ is drawn into a wire of length } l. \text{ When this wire is subjected to a constant force } F, \text{ the extension produced in the wire is } \Delta l. \text{ Which of the following graphs is a straight line?}$ 1 108 Recommended Questions $\Delta l \text{ vs } \frac{1}{l}$, $\Delta l \text{ vs } l^2$... 2 Edit Delete
10400 $\text{The area of cross-section of a wire of length 1.1 m is } 1 \text{ mm}^2. \text{ It is loaded with mass of 1 kg. If Young's modulus of copper is } 1.1 \times 10^{11} \text{ N/m}^2, \text{ then the increase in length will be: (If } g = 10 \text{ m/s}^2)$ 1 108 Recommended Questions $0.01 \text{ mm}$, $0.075 \text{ mm}$... 3 Edit Delete
10399 $\text{A metallic rope of diameter 1 mm breaks at 10 N force. If the wire of the same material has a diameter of 2 mm, then the breaking force is:}$ 1 108 Recommended Questions $2.5 \text{ N}$, $5 \text{ N}$... 4 Edit Delete
10398 $\text{On applying stress of } 20 \times 10^8 \text{ N/m}^2\text{, the length of a perfectly elastic wire is doubled. It's Young's modulus will be:}$ 1 108 Recommended Questions $40 \times 10^8 \text{ N/m}^2$, $20 \times 10^8 \text{ N/m}^2$... 2 Edit Delete
10397 $\text{Given below are two statements:}$ $\text{Assertion (A): Young's modulus for a perfectly plastic body is zero.}$ $\text{Reason (R): For a perfectly plastic body, restoring force is zero.}$ 1 108 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10396 $\text{Steel and copper wires of the same length and area are stretched by the same weight one after the other. Young's modulus of steel and copper are } 2 \times 10^{11} \text{ N/m}^2 \text{ and } 1.2 \times 10^{11} \text{ N/m}^2\text{. The ratio of increase in length is:}$ 1 108 Recommended Questions $\frac{2}{5}$, $\frac{3}{5}$... 2 Edit Delete
10395 $\text{The figure shows the graph between stress and strain for a uniform wire at two different temperatures. Then:}$ 1 108 Recommended Questions $T_1 > T_2$, $T_2 > T_1$... 1 Edit Delete
10394 $\text{The figure shows the stress-strain curve for a given material. The approximate yield strength for this material is:}$ 1 108 Recommended Questions $3 \times 10^8 \text{ N/m}^2$, $2 \times 10^8 \text{ N/m}^2$... 1 Edit Delete
10393 $\text{On withdrawing the external applied force on bodies within the elastic limit, the body:}$ 1 108 Recommended Questions $\text{regains its previous state very quickly}$, $\text{regains its previous state after some time}$... 1 Edit Delete
10392 $\text{If two different types of rubber are found to have stress-strain curves as shown, then:}$ 1 108 Recommended Questions $\text{A is suitable for shock absorbers.}$, $\text{B is suitable for shock absorbers.}$... 2 Edit Delete
10391 $\text{Two wires of copper having length in the ratio of } 4 : 1 \text{ and radii ratio of } 1 : 4 \text{ are stretched by the same force. The ratio of longitudinal strain in the two will be:}$ 1 108 Recommended Questions $1 : 16$, $16 : 1$... 2 Edit Delete
10390 $\text{Hooke's law is applicable for:}$ 1 108 Recommended Questions $\text{elastic materials only}$, $\text{plastic materials only}$... 1 Edit Delete
10389 $\text{The ratio of lengths of two rods } A \text{ and } B \text{ of the same material is } 1 : 2 \text{ and the ratio of their radii is } 2 : 1. \text{ The ratio of modulus of rigidity of } A \text{ and } B \text{ will be:}$ 1 108 Recommended Questions $4 : 1$, $16 : 1$... 4 Edit Delete
10388 $\text{A cube of aluminium of sides 0.1 m is subjected to a shearing force of 100 N. The top face of the cube is displaced through 0.02 cm with respect to the bottom face. The shearing strain would be:}$ 1 108 Recommended Questions $0.02$, $0.1$... 4 Edit Delete
10387 One end of a uniform wire of length $L$ and of weight $W$ is attached rigidly to a point in the roof and a weight $W_1$ is suspended from its lower end. If $A$ is the area of the cross-section of the wire, the stress in the wire at a height $\frac{3L}{4}$ from its lower end is: 1 108 Recommended Questions $\frac{W+W_1}{A}$, $\frac{4W+W_1}{3A}$... 4 Edit Delete
10386 $\text{If } \rho \text{ is the density of the material of a wire and } \sigma \text{ is the breaking stress, the greatest length of the wire that can hang freely without breaking is:}$ 1 108 Recommended Questions $\frac{2}{\rho g}$, $\frac{\rho}{\sigma g}$... 4 Edit Delete
10385 A force $F$ is needed to break a copper wire having radius $R$. The force needed to break a copper wire of radius $2R$ will be: 1 108 Recommended Questions $\frac{F}{2}$, $2F$... 3 Edit Delete
10384 The breaking stress of a wire depends on: 1 108 Recommended Questions length of the wire, applied force... 3 Edit Delete
10383 For an ideal liquid: (a) The bulk modulus is infinite. (b) The bulk modulus is zero. (c) The shear modulus is infinite. (d) The shear modulus is zero. Choose the correct option from the options given below: 1 108 Recommended Questions (a) and (d) only, (b) and (d) only... 1 Edit Delete
10382 A copper and a steel wire of the same diameter are connected end to end. A deforming force $F$ is applied to this composite wire which causes a total elongation of $\text{1 cm}$. The two wires will have: 1 108 Recommended Questions (a) the same stress (b) different stress, (a) (d)... 2 Edit Delete
10381 A wire of length $L$ and cross-sectional area $A$ is made of a material of Young's modulus $Y$. It is stretched by an amount $x$. The work done is: 1 108 Recommended Questions $\frac{YxA}{2L}$, $\frac{Yx^2A}{L}$... 3 Edit Delete
10380 $\text{If } E \text{ is the energy stored per unit volume in a wire having } Y \text{ as Young's modulus of the material, then the stress applied is:}$ 1 108 Recommended Questions $\sqrt{2EY}$, $2\sqrt{EY}$... 1 Edit Delete
10379 $\text{An elastic material of Young's modulus } Y \text{ is subjected to a stress } S. \text{ The elastic energy stored per unit volume of the material is:}$ 1 108 Recommended Questions $\frac{SY}{2}$, $\frac{S^2}{2Y}$... 2 Edit Delete
10378 The work done in stretching an elastic wire per unit volume is: 1 108 Recommended Questions $\text{stress} \times \text{strain}$, $\frac{1}{2} \times \text{stress} \times \text{strain}$... 2 Edit Delete
10377 $\text{A uniform wire is held at one end and stretched by applying force at the other end. If the product of the length of wire and area of cross-section of the wire remains unchanged, then Poisson's ratio of material of the wire will be:}$ 1 108 Recommended Questions $0$, $0.50$... 2 Edit Delete
10376 The Poisson's ratio of a material is $0.4$. If a force is applied to a wire of this material, there is a decrease in the cross-section area by $2\%$. In such a case the percentage increase in its length will be: 1 108 Recommended Questions $3\%$, $2.5\%$... 2 Edit Delete
10375 $\text{What is the density of water at a depth where pressure is 80.0 atm, given that its density at the surface is } 1.03 \times 10^3 \text{ kg m}^{-3}\text{?}$ 1 108 Recommended Questions $0.021 \times 10^3 \text{ kg m}^{-3}$, $4.022 \times 10^3 \text{ kg m}^{-3}$... 4 Edit Delete
10374 A square lead slab of side $50 \text{ cm}$ and thickness $10 \text{ cm}$ is subject to a shearing force (on its narrow face) of $9.0 \times 10^4 \text{ N}$. The lower edge is riveted to the floor as shown in the figure below. How much will the upper edge be displaced? (Shear modulus of lead $= 5.6 \times 10^9 \text{ Nm}^{-2}$) 1 108 Recommended Questions $0.16 \text{ mm}$, $1.8 \text{ mm}$... 1 Edit Delete
10373 $\text{The bulk modulus of a spherical object is } B. \text{ If it is subjected to uniform pressure } P, \text{ the fractional decrease in radius will be:}$ 1 108 Recommended Questions $\frac{P}{B}$, $\frac{B}{3P}$... 4 Edit Delete
10372 The edge of an aluminum cube is $10 \text{ cm}$ long. One face of the cube is firmly fixed to a vertical wall. A mass of $100 \text{ kg}$ is then attached to the opposite face of the cube. The shear modulus of aluminum is $25 \text{ GPa}$. What is the vertical deflection of this face? 1 108 Recommended Questions $4.86 \times 10^{-6} \text{ m}$, $3.92 \times 10^{-7} \text{ m}$... 2 Edit Delete
10371 $\text{The volume contraction of a solid copper cube, 10 cm on an edge, when subjected to a hydraulic pressure of } 7.0 \times 10^6 \text{ Pa is:}$ $\text{(Bulk modulus of copper is } 140 \times 10^9 \text{ Pa.)}$ 1 108 Recommended Questions $3.1 \times 10^{-2} \text{ m}^3$, $9.1 \times 10^{-3} \text{ cm}^3$... 3 Edit Delete
10370 Four identical hollow cylindrical columns of mild steel support a big structure of a mass of $50,000 \text{ kg}$. The inner and outer radii of each column are $30 \text{ cm}$ and $60 \text{ cm}$ respectively. Assuming the load distribution to be uniform, the compressional strain of each column is: (Given, Young's modulus of steel, $Y = 2 \times 10^{11} \text{ Pa}$) 1 108 Recommended Questions $3.03 \times 10^{-7}$, $2.8 \times 10^{-6}$... 3 Edit Delete
10369 \text{Two wires of diameter 0.25 cm, one made of steel and the other made of brass are loaded, as shown in the figure.} \text{The unloaded length of the steel wire is 1.5 m and that of the brass wire is 1.0 m.} \text{The elongation of the steel wire will be:} \text{(Given that Young's modulus of the steel, } Y_S = 2 \times 10^{11} \text{ Pa} \text{and Young's modulus of brass, } Y_B = 1 \times 10^{11} \text{ Pa)} 1 108 Recommended Questions $1.5 \times 10^{-4} \text{ m}$, $0.5 \times 10^{-4} \text{ m}$... 1 Edit Delete
10368 In the CGS system, Young's modulus of a steel wire is $2 \times 10^{12} \text{ dyne/cm}^2$. To double the length of a wire of unit cross-section area, the force required is: 1 108 Recommended Questions $4 \times 10^6 \text{ dynes}$, $2 \times 10^{12} \text{ dynes}$... 2 Edit Delete
10367 $\text{The Young's modulus of a wire is numerically equal to the stress at a point when:}$ 1 108 Recommended Questions $\text{The strain produced in the wire is equal to unity.}$, $\text{The length of the wire gets doubled.}$... 4 Edit Delete
10366 The Young's modulus of steel is twice that of brass. Two wires of the same length and of the same area of cross-section, one of steel and another of brass are suspended from the same roof. If we want the lower ends of the wires to be at the same level, then the weight added to the steel and brass wires must be in the ratio of: 1 108 Recommended Questions $1:2$, $2:1$... 2 Edit Delete
10365 $\text{Two wires are made of the same material and have the same volume. The first wire has a cross-sectional area } A \text{ and the second wire has a cross-sectional area } 3A. \text{ If the length of the first wire is increased by } \Delta l \text{ on applying a force } F, \text{ how much force is needed to stretch the second wire by the same amount?}$ 1 108 Recommended Questions $9F$, $6F$... 1 Edit Delete
10364 $\text{If the ratio of lengths, radii, and Young's modulus of steel and brass wires in the figure are } a, b \text{ and } c \text{ respectively, then the corresponding ratio of increase in their lengths will be:}$ 1 108 Recommended Questions $\frac{2a^2c}{b}$, $\frac{3a}{2b^2c}$... 2 Edit Delete
10363 A steel ring of radius $r$ and cross-section area $A$ is fitted onto a wooden disc of radius $R(R > r)$. If Young's modulus is $E$, then the force with which the steel ring is expanded is: 1 108 Recommended Questions $AE\frac{R}{r}$, $AE\left(\frac{R-r}{r}\right)$... 2 Edit Delete
10362 $\text{The strain-stress curves of three wires of different materials are shown in the figure. } P, Q \text{ and } R \text{ are the elastic limits of the wires. The figure shows that:}$ 1 108 Recommended Questions $\text{Elasticity of wire } P \text{ is maximum.}$, $\text{Elasticity of wire } Q \text{ is maximum.}$... 4 Edit Delete
10361 Two wires $X$ and $Y$ of the same length are made of the same material. The figure represents the load $F$ versus extension $\Delta x$ graph for the two wires. Hence: 1 108 Recommended Questions Modulus of elasticity of $Y$ is greater than that of $X$., Stiffness of $Y$ is more than that of $X$.... 2 Edit Delete
10360 The figure shows the stress-strain curve for a given material. The approximate yield strength for this material is: 1 108 Recommended Questions $3 \times 10^8 \text{ N/m}^2$, $2 \times 10^8 \text{ N/m}^2$... 1 Edit Delete
10359 $\text{Three wires } A, B, C \text{ made of the same material and radius have different lengths. The graphs in the figure show the elongation-load variation. The longest wire is:}$ 1 108 Recommended Questions $A$, $B$... 3 Edit Delete
10358 $\text{The stress-strain curve for two materials } A \text{ and } B \text{ are as shown in the figure. Select the correct statement:}$ 1 108 Recommended Questions $\text{Material } A \text{ is less brittle and less elastic as compared to } B.$, $\text{Material } A \text{ is more ductile and less elastic as compared to } B.$... 3 Edit Delete
10357 $\text{The elongation } (X) \text{ of a steel wire varies with the elongating force } (F) \text{ according to the graph: (within elastic limit)}$ 1 108 Recommended Questions $\text{Graph 1: Hyperbolic curve (decreasing)}$, $\text{Graph 2: Exponential curve (increasing)}$... 4 Edit Delete
10356 $\text{The stress versus strain graphs for wires of two materials } A \text{ and } B \text{ are as shown in the figure. If } Y_A \text{ and } Y_B \text{ are the Young's moduli of the materials, then:}$ 1 108 Recommended Questions $Y_B = 2Y_A$, $Y_A = Y_B$... 4 Edit Delete
10355 The stress-strain graphs for materials $A$ and $B$ are shown in the figure. Young's modulus of material $A$ is: (the graphs are drawn to the same scale) 1 108 Recommended Questions equal to material $B$, less than material $B$... 3 Edit Delete
10354 The stress-strain curves are drawn for two different materials $X$ and $Y$. It is observed that the ultimate strength point and the fracture point are close to each other for material $X$ but are far apart for material $Y$. We can say that the materials $X$ and $Y$ are likely to be (respectively): 1 108 Recommended Questions ductile and brittle, brittle and ductile... 2 Edit Delete
10353 The stress versus strain graph is shown for two wires. If $Y_1$ and $Y_2$ are Young modulus of wire $A$ and $B$ respectively, then the correct option is: 1 108 Recommended Questions $Y_1 > Y_2$, $Y_2 > Y_1$... 1 Edit Delete
10352 Given below are two statements: Assertion (A): Hooke's law is applicable up to the elastic limit. Reason (R): Up to the elastic limit, stress is directly proportional to strain. 1 108 Recommended Questions Both (A) and (R) are True and (R) is the correct explanation of (A)., Both (A) and (R) are True but (R) is not the correct explanation of (A).... 4 Edit Delete
10351 The length of elastic string, obeying Hooke's law is $l_1$ metres when the tension is $4 \text{ N}$, and $l_2$ metres when the tension is $5 \text{ N}$. The length in metres when the tension is $0 \text{ N}$ will be: 1 108 Recommended Questions $5l_1 - 4l_2$, $5l_2 - 4l_1$... 1 Edit Delete
10350 $\text{The length of an elastic string is } a \text{ metre when the longitudinal tension is 4 N and } b \text{ metre when the longitudinal tension is 5 N. The length of the string in metre when the longitudinal tension is 9 N will be:}$ 1 108 Recommended Questions $a - b$, $5b - 4a$... 2 Edit Delete
10349 $\text{A 1000 kg lift is tied with metallic wires of maximum safe stress of } 1.4 \times 10^8 \text{ N m}^{-2}\text{. If the maximum acceleration of the lift is } 1.2 \text{ m s}^{-2}\text{, then the minimum diameter of the wire is:}$ 1 108 Recommended Questions $1 \text{ m}$, $0.1 \text{ m}$... 3 Edit Delete
10348 $\text{Anvils made of single crystals of diamond, with the shape as shown in the figure, are used to investigate the behaviour of materials under very high pressures. Flat faces at the narrow end of the anvil have a diameter of 0.50 mm, and the wide end are subjected to a compressional force of 50,000 N. What is the pressure at the tip of the anvil?}$ 1 108 Recommended Questions $2.5 \times 10^{11} \text{ Pa}$, $3.7 \times 10^{11} \text{ Pa}$... 1 Edit Delete
10347 $\text{A rod of length 1.05 m having negligible mass is supported at its ends by two wires of steel (wire } A\text{) and aluminium (wire } B\text{) of equal lengths as shown in the figure. The cross-sectional areas of wires } A \text{ and } B \text{ are } 1.0 \text{ mm}^2 \text{ and } 2.0 \text{ mm}^2 \text{ respectively. At what point along the rod should a mass m be suspended in order to produce equal stresses in both steel and aluminium wires?}$ 1 108 Recommended Questions $0.7 \text{ m from wire } A$, $0.07 \text{ m from wire } A$... 1 Edit Delete
10346 $\text{To break a wire, a force of } 10^6 \text{ N/m}^2 \text{ is required. If the density of the material is } 3 \times 10^3 \text{ kg/m}^3\text{, then the length of the wire which will break by its own weight will be:}$ 1 108 Recommended Questions $34 \text{ m}$, $30 \text{ m}$... 1 Edit Delete
10345 $\text{A uniform wire of length 3 m and mass 10 kg is suspended vertically from one end and loaded at another end by a block of mass 10 kg. The radius of the cross-section of the wire is 0.1 m. The stress in the middle of the wire is: (Take } g = 10 \text{ ms}^{-2}\text{)}$ 1 108 Recommended Questions $1.4 \times 10^4 \text{ N/m}^2$, $4.8 \times 10^3 \text{ N/m}^2$... 2 Edit Delete
10344 $\text{A wire can sustain a weight of 10 kg before breaking. If the wire is cut into two equal parts, then each part can sustain a weight of:}$ 1 108 Recommended Questions $2.5 \text{ kg}$, $5 \text{ kg}$... 3 Edit Delete
10343 $\text{The breaking stress of a wire going over a smooth pulley in the following question is } 2 \times 10^9 \text{ N/m}^2\text{. What would be the minimum radius of the wire used if it is not to break?}$ 1 108 Recommended Questions $0.46 \times 10^{-6} \text{ m}$, $0.46 \times 10^{-4} \text{ m}$... 2 Edit Delete
10342 $\text{A light rod of length 2 m is suspended from the ceiling horizontally by means of two vertical wires of equal length. A weight } W \text{ is hung from the light rod as shown in the figure. The rod is hung by means of a steel wire of cross-sectional area } A_1 = 0.1 \text{ cm}^2 \text{ and brass wire of cross-sectional area } A_2 = 0.2 \text{ cm}^2\text{. To have equal stress in both wires, } \frac{T_1}{T_2} \text{?}$ 1 108 Recommended Questions $\frac{1}{3}$, $\frac{1}{4}$... 4 Edit Delete
10341 $\text{A steel cable with a radius of 1.5 cm supports a chairlift at a ski area. If the maximum stress is not to exceed } 10^8 \text{ N/m}^2\text{, what is the maximum load that the cable can support?}$ 1 108 Recommended Questions $7.06 \times 10^4 \text{ N}$, $5.03 \times 10^4 \text{ N}$... 1 Edit Delete
10340 $\text{An insect, initially on the circumference of a disc, starts moving along a chord of the disc, rotating about an axis passing through the center and perpendicular to the plane of the disc. Its angular speed:}$ 1 107 Recommended Questions $\text{increases.}$, $\text{decreases.}$... 3 Edit Delete
10339 $\text{Which of the following will not be affected if the radius of the sphere is increased while keeping mass constant?}$ 1 107 Recommended Questions $\text{Moment of inertia}$, $\text{Angular momentum}$... 2 Edit Delete
10338 1 107 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10337 $\text{If the radius of the earth is suddenly contracted to half of its present value, then the duration of the day will be of:}$ 1 107 Recommended Questions $\text{6 hours}$, $\text{12 hours}$... 1 Edit Delete
10336 $\text{The law of conservation of angular momentum is valid when:}$ 1 107 Recommended Questions $\text{The net force is zero and the net torque is non-zero}$, $\text{The net force is non-zero and the net torque is non-zero}$... 3 Edit Delete
10335 $\text{When a mass is rotating in a plane about a fixed point, its angular momentum is directed along:}$ 1 107 Recommended Questions $\text{a line perpendicular to the plane of rotation}$, $\text{the line making an angle of } 45^\circ \text{ to the plane of rotation}$... 1 Edit Delete
10334 $\text{The body of mass 1.5 kg rotating about an axis with angular velocity of 0.3 rad s}^{-1} \text{ has the angular momentum of 1.8 kg m}^2\text{s}^{-1}\text{. The radius of gyration of the body about the axis is:}$ 1 107 Recommended Questions $\text{2 m}$, $\text{1.2 m}$... 1 Edit Delete
10333 $\text{A thin uniform circular disc of mass } M \text{ and radius } R \text{ is rotating in a horizontal plane about an axis passing through its center and perpendicular to its plane with an angular velocity } \omega\text{. Another disc of the same dimensions but of mass } \frac{1}{4}M \text{ is placed gently on the first disc co-axially. The angular velocity of the system will be:}$ 1 107 Recommended Questions $\frac{2}{3}\omega$, $\frac{4}{5}\omega$... 2 Edit Delete
10332 $\text{A horizontal heavy uniform bar of weight } W \text{ is supported at its ends by two men. At the instant, one of the men lets go off his end of the rod, the other feels the force on his hand changed to:}$ 1 107 Recommended Questions $W$, $\frac{W}{2}$... 4 Edit Delete
10331 $\text{Given below are two statements:}$ $\text{Assertion (A): If there is no external torque on a body about its centre of mass, then the velocity of the centre of mass remains constant.}$ $\text{Reason (R): The linear momentum of an isolated system remains constant.}$ 1 107 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
10330 $\text{A body of mass M is moving on a circular track of radius r in such a way that its kinetic energy K depends on the distance travelled by the body s according to relation } K = \beta s, \text{ where } \beta \text{ is a constant. The angular acceleration of the body is:}$ 1 107 Recommended Questions $\frac{\beta r}{M^2}$, $\sqrt{\frac{\beta r}{M}}$... 4 Edit Delete
10329 $\text{A circular disc is to be made by using iron and aluminium so that it acquires a maximum moment of inertia about its geometrical axis. It is possible with:}$ 1 107 Recommended Questions $\text{Aluminium in the interior and iron surrounding it}$, $\text{Iron at the interior and aluminium surrounding it}$... 1 Edit Delete
10328 $\text{The moment of inertia of a thin uniform circular disc about one of its diameter is I. Its moment of inertia about an axis perpendicular to the circular surface and passing through its center will be:}$ 1 107 Recommended Questions $\sqrt{2I}$, $2I$... 2 Edit Delete
10327 $\text{Two uniform, thin, identical rods, each of mass } M \text{ and length } l \text{ are joined together to form a cross. What will be the moment of inertia of the cross about an axis passing through the point at which the two rods are joined and are perpendicular to the plane of the cross?}$ 1 107 Recommended Questions $\frac{Ml^2}{12}$, $\frac{Ml^2}{6}$... 2 Edit Delete
10326 $\text{The moment of inertia of a horizontal ring about its vertical axis through the centre is } mR^2. \text{ The moment of inertia about its tangent parallel to the plane is:}$ 1 107 Recommended Questions $\frac{3mR^2}{2}$, $\frac{mR^2}{4}$... 1 Edit Delete
10325 $\text{If a particle moves in a circle with a constant angular speed } (\omega) \text{ about the point } O\text{, then its angular speed about the point } A \text{ will be:}$ 1 107 Recommended Questions $\frac{2\omega}{\omega}$, $\frac{\omega}{2}$... 2 Edit Delete
10324 $\text{Given below are two statements:}$ $\text{Assertion (A): The axis of rotation of a rigid body cannot lie outside the body.}$ $\text{Reason (R): It must pass through a material particle of the body.}$ 1 107 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
10323 $\text{A solid body rotates about a stationary axis according to the equation } \theta = 6t - 2t^3. \text{ What is the average angular velocity over the time interval between } t = 0 \text{ and the time when the body comes to rest? } (\theta: \text{ angular displacements, } t: \text{ time})$ 1 107 Recommended Questions $1 \text{ rad/s}$, $2 \text{ rad/s}$... 4 Edit Delete
10322 $\text{Particles } A \text{ and } B \text{ are separated by 10 m, as shown in the figure. If } A \text{ is at rest and } B \text{ started moving with a speed of 20 m/s then the angular velocity of } B \text{ with respect to } A \text{ at that instant is:}$ 1 107 Recommended Questions $1 \text{ rad/s}$, $1.5 \text{ rad/s}$... 1 Edit Delete
10321 $\text{If a body is moving in a circular path with decreasing speed, then (symbols have their usual meanings):}$ 1 107 Recommended Questions $\vec{r} \cdot \vec{\omega} = 0$, $\vec{r} \cdot \vec{v} = 0$... 4 Edit Delete
10320 $\text{For a rigid body rotating about a fixed axis, which of the following quantities is the same at an instant for all the particles of the body?}$ 1 107 Recommended Questions $\text{Angular acceleration}$, $\text{Angular velocity}$... 4 Edit Delete
10319 $\text{A wheel has an angular acceleration of } 3.0 \text{ rad/s}^2 \text{ and an initial angular speed of } 2.00 \text{ rad/s. In a time of } 2 \text{ s, it has rotated through an angle (in radians) of:}$ 1 107 Recommended Questions $6$, $10$... 2 Edit Delete
10318 $\text{Two particles of mass, } 2 \text{ kg and } 4 \text{ kg, are projected from the top of a tower simultaneously, such that } 2 \text{ kg of mass is projected with a speed } 20 \text{ m/s at an angle } 30^\circ \text{ above horizontal and } 4 \text{ kg is projected at } 40 \text{ m/s horizontally. The acceleration of the centre of mass of the system of two particles will be:}$ 1 107 Recommended Questions $\frac{g}{2}$, $\frac{g}{4}$... 3 Edit Delete
10317 $\text{A uniform rod of length } 1 \text{ m and mass } 2 \text{ kg is suspended by two vertical inextensible strings as shown in the following figure. The tension } T \text{ (in newtons) in the left string at the instant when the right string snaps is:}$ $(g = 10 \text{ m/s}^2)$ 1 107 Recommended Questions $2.5 \text{ N}$, $5 \text{ N}$... 2 Edit Delete
10316 $\text{A solid cylinder of mass } 50 \text{ kg and radius } 0.5 \text{ m is free to rotate about the horizontal axis. A massless string is wound around the cylinder with one end attached to it and the other end hanging freely. The tension in the string required to produce an angular acceleration of } 2 \text{ rev/s}^2 \text{ will be:}$ 1 107 Recommended Questions $25 \text{ N}$, $50 \text{ N}$... 4 Edit Delete
10315 $\text{A uniform rod of length } l \text{ is hinged at one end and is free to rotate in the vertical plane. The rod is released from its position, making an angle } \theta \text{ with the vertical. The acceleration of the free end of the rod at the instant it is released is:}$ 1 107 Recommended Questions $\frac{3g\sin\theta}{l}$, $\frac{3g\cos\theta}{2}$... 3 Edit Delete
10314 $\text{Two rotating bodies } A \text{ and } B \text{ of masses } m \text{ and } 2m \text{ with moments of inertia } I_A \text{ and } I_B \text{ (} I_B > I_A \text{) have equal kinetic energy of rotation. If } L_A \text{ and } L_B \text{ be their angular momenta respectively, then:}$ 1 107 Recommended Questions $L_A = \frac{L_B}{2}$, $L_A = 2L_B$... 3 Edit Delete
10313 $\text{A rigid body rotates with an angular momentum of } L. \text{ If its kinetic energy is halved, the angular momentum becomes:}$ 1 107 Recommended Questions $L$, $\frac{L}{2}$... 4 Edit Delete
10312 \text{Given below are two statements:} \text{Assertion (A): For a body under translatory as well as rotational equilibrium, net torque about any axis is zero.} \text{Reason (R): Together } \sum \vec{F}_i = 0 \text{ and } \sum \left(\vec{r}_i \times \vec{F}_i\right) = 0 \text{ implies that } \sum \left(\vec{r}_i - \vec{r}_0\right) \times \vec{F}_i = 0 1 107 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10311 $\text{A string is wrapped along the rim of a wheel of the moment of inertia 0.10 kg-m}^2 \text{ and radius 10 cm. If the string is now pulled by a force of 10 N, then the wheel starts to rotate about its axis from rest. The angular velocity of the wheel after 2 s will be:}$ 1 107 Recommended Questions $40 \text{ rad/s}$, $80 \text{ rad/s}$... 4 Edit Delete
10310 $\text{A wheel is rotating about an axis through its centre at 720 rpm. It is acted upon by a constant torque opposing its motion for 8 seconds to bring it to rest finally. The value of torque in (N-m) is:}$ $\text{(given } I = \frac{24}{\pi} \text{ kg.m}^2\text{)}$ 1 107 Recommended Questions $48$, $72$... 2 Edit Delete
10309 $\text{A bob of mass m attached to an inextensible string of length l is suspended from vertical support. The bob rotates in a horizontal circle with an angular speed } \omega \text{ rad/s about the vertical. About the point of suspension.}$ 1 107 Recommended Questions $\text{Angular momentum is conserved}$, $\text{Angular momentum changes in magnitude but not in the direction}$... 3 Edit Delete
10308 $\text{A child is standing on the edge of a merry-go-round that has the shape of a disk, as shown in the figure. The mass of the child is 40 kilograms. The merry-go-round has a mass of 200 kilograms and a radius of 2.5 meters, and it is rotating with an angular velocity of } \omega = 2.0 \text{ radians per second. The child then walks slowly towards the center of the merry-go-round. When the child reaches the center, what is the angular velocity of the disc? (The size of the child can be neglected.)}$ 1 107 Recommended Questions $2.0 \text{ rad/s}$, $2.2 \text{ rad/s}$... 4 Edit Delete
10307 $\text{A billiard ball of mass m and radius r, when hit in a horizontal direction by a cue at a height h above its centre, acquires a linear velocity } v_0. \text{ The angular velocity } \omega_0 \text{ acquired by the ball will be:}$ 1 107 Recommended Questions $\frac{5v_0r^2}{2h}$, $\frac{2v_0r^2}{5h}$... 4 Edit Delete
10306 $\text{A particle of mass m moves with a constant velocity along 3 different paths, DE, OA and BC. Which of the following statements is not correct about its angular momentum about point O?}$ 1 107 Recommended Questions $\text{It is zero when it is at A and moving along OA.}$, $\text{The same at all points along the line DE.}$... 4 Edit Delete
10305 $\text{A circular platform is mounted on a frictionless vertical axle. Its radius is R = 2m and its moment of inertia about the axle is 200 kg m}^2\text{. Initially, it is at rest. A 50 kg man stands on the edge of the platform and begins to walk along the edge at a speed of 1 m s}^{-1}\text{ relative to the ground. The time taken by the man to complete one revolution is:}$ 1 107 Recommended Questions $\pi \text{ sec}$, $\frac{3\pi}{2} \text{ sec}$... 3 Edit Delete
10304 $\text{A uniform rod on a smooth horizontal table is moving with uniform horizontal speed } v. \text{ Suddenly rod is hinged at the center of the rod. The angular velocity of the rod, now, will be:}$ 1 107 Recommended Questions $\frac{2v}{3l}$, $\frac{3v}{2l}$... 4 Edit Delete
10303 $\text{A uniform rod of mass } m \text{ and length } l \text{ is in uniform translational motion. If one of its ends is suddenly hinged then (hinge is smooth):}$ 1 107 Recommended Questions $\text{It will continue its translational motion.}$, $\text{It will now be in pure rotational motion about the hinged end.}$... 2 Edit Delete
10302 $\text{The position of a particle is given by } \vec{r} = \hat{i} + 2\hat{j} - \hat{k} \text{ and momentum } \vec{P} = (3\hat{i} + 4\hat{j} - 2\hat{k}). \text{ The angular momentum is perpendicular to:}$ 1 107 Recommended Questions $\text{X-axis}$, $\text{Y-axis}$... 1 Edit Delete
10301 $\text{A particle is moving with a constant velocity along a line parallel to the positive x-axis. The magnitude of its angular momentum with respect to the origin is:}$ 1 107 Recommended Questions $\text{zero}$, $\text{increasing with } x$... 4 Edit Delete
10300 $\text{A particle of mass } m \text{ moves in the } XY \text{ plane with a velocity of } v \text{ along the straight line } AB. \text{ If the angular momentum of the particle about the origin } O \text{ is } L_A \text{ when it is at } A \text{ and } L_B \text{ when it is at } B, \text{ then:}$ 1 107 Recommended Questions $L_A > L_B$, $L_A = L_B$... 2 Edit Delete
10299 $\text{A force } \vec{F} = \alpha\hat{i} + 3\hat{j} + 6\hat{k} \text{ is acting at a point } \vec{r} = 2\hat{i} - 6\hat{j} - 12\hat{k}\text{. The value of } \alpha \text{ for which angular momentum is conserved about the origin is:}$ 1 107 Recommended Questions $-1$, $2$... 1 Edit Delete
10298 $\text{A solid sphere of mass } m \text{ is in pure rolling motion with the centre of mass moving with velocity } v_0. \text{ It's angular momentum about the point } P \text{ shown in the diagram is:}$ 1 107 Recommended Questions $\frac{2}{5}mv_0R$, $\frac{1}{5}mv_0R$... 3 Edit Delete
10297 $\text{The figure below shows two identical particles 1 and 2, each of mass } m\text{, moving in opposite directions with the same speed } v \text{ along parallel lines. At a particular instant, } r_1 \text{ and } r_2 \text{ are their respective position vectors drawn from point } A\text{, which is in the plane of the parallel lines.}$ $\text{Consider the following statements.}$ 1 107 Recommended Questions $\text{(a), (c) only}$, $\text{(a), (d) only}$... 2 Edit Delete
10296 $\text{A rod is falling down with constant velocity } V_0 \text{ as shown. It makes contact with hinge A and rotates around it. The angular velocity of the rod just after the moment when it comes in contact with hinge A is:}$ 1 107 Recommended Questions $\frac{2V_0}{3L}$, $\frac{3V_0}{2L}$... 2 Edit Delete
10295 $\text{A ring of mass of 10 kg and diameter of 0.4 m is rotated about its axis. If it makes 2100 revolutions per minute, then its angular momentum will be:}$ 1 107 Recommended Questions $44 \text{ kg m}^2 \text{ s}^{-1}$, $88 \text{ kg m}^2 \text{ s}^{-1}$... 2 Edit Delete
10294 $\text{Two discs are rotating about their axes, normal to the discs and passing through the centres of the discs. Disc } D_1 \text{ has a 2 kg mass, 0.2 m radius, and an initial angular velocity of 50 rad s}^{-1}\text{. Disc } D_2 \text{ has 4 kg mass, 0.1 m radius, and initial angular velocity of 200 rad s}^{-1}\text{. The two discs are brought in contact face to face, with their axes of rotation coincident. The final angular velocity (in rad.s}^{-1}\text{) of the system will be:}$ 1 107 Recommended Questions $60$, $100$... 2 Edit Delete
10293 $\text{A boy is standing on a disc rotating about the vertical axis passing through its centre. He pulls his arms towards himself, reducing his moment of inertia by a factor of m. The new angular speed of the disc becomes double its initial value. If the moment of inertia of the boy is } I_0\text{, then the moment of inertia of the disc will be:}$ 1 107 Recommended Questions $2I_0m$, $I_0\left(1 - \frac{2}{m}\right)$... 2 Edit Delete
10292 $\text{A solid sphere of mass } M \text{ and the radius } R \text{ is in pure rolling with angular speed } \omega \text{ on a horizontal plane as shown in the figure. The magnitude of the angular momentum of the sphere about the origin } O \text{ is:}$ 1 107 Recommended Questions $\frac{7}{5}MR^2\omega$, $\frac{3}{2}MR^2\omega$... 1 Edit Delete
10291 $\text{A thin circular ring of mass } M \text{ and radius } R \text{ is rotating in a horizontal plane about an axis vertical to its plane with a constant angular velocity } \omega\text{. If two objects each of mass } m \text{ are attached gently to the opposite ends of the diameter of the ring, the ring will then rotate with an angular velocity:}$ 1 107 Recommended Questions $\frac{\omega(M-2m)}{M+2m}$, $\frac{\omega M}{M+2m}$... 2 Edit Delete
10290 $\text{A uniform cubical block of side L rests on a rough horizontal surface with coefficient of friction } \mu. \text{ A horizontal force F is applied on the block as shown. If there is sufficient friction between the block and the ground, then the torque due to normal reaction about its centre of mass is:}$ 1 107 Recommended Questions $\text{Zero}$, $FL$... 2 Edit Delete
10289 $\text{A force } -F\hat{k} \text{ acts on O, the origin of the coordinate system. The torque at the point (1, -1) will be:}$ 1 107 Recommended Questions $-F(\hat{i} + \hat{j})$, $F(\hat{i} + \hat{j})$... 1 Edit Delete
10288 $\text{On a rough horizontal surface (coefficient of friction } \mu\text{), a cubical block of side 'a' and mass m is projected horizontally. The net torque on the block about its centre of mass till the block stops is equal to:}$ 1 107 Recommended Questions $\text{zero}$, $\frac{1}{2}\mu mga$... 1 Edit Delete
10287 The figure shows a lamina in XY-plane. Two axes z and z' pass perpendicular to its plane. A force $\vec{F}$ acts in the plane of the lamina at point P as shown. (The point P is closer to the z'-axis than the z-axis.) (a) torque $\vec{\tau}$ caused by $\vec{F}$ about z-axis is along $-\hat{k}$ (b) torque $\vec{\tau}'$ caused by $\vec{F}$ about z'-axis is along $-\hat{k}$ (c) torque caused by $\vec{F}$ about the z-axis is greater in magnitude than that about the z'-axis (d) total torque is given by $\vec{\tau}_{\text{net}} = \vec{\tau} + \vec{\tau}'$ 1 107 Recommended Questions $(c, d)$, $(a, c)$... 3 Edit Delete
10286 $\text{A meter stick is balanced on a knife edge at its center. When two coins, each of the mass 5 gm are put one on top of the other at the 12.0 cm mark, the stick is found to be balanced at 45.0 cm. What is the mass of the meter stick?}$ 1 107 Recommended Questions $66 \text{ gm}$, $56 \text{ gm}$... 1 Edit Delete
10285 $\text{For L = 3.0 m, the total torque about pivot A provided by the forces as shown in the figure is:}$ 1 107 Recommended Questions $210 \text{ Nm}$, $140 \text{ Nm}$... 4 Edit Delete
10284 $\text{Shown in the figure is a rigid and uniform one-metre long rod, } AB\text{, held in the horizontal position by two strings tied to its ends and attached to the ceiling. The rod is of mass } m \text{ and has another weight of mass } 2m \text{ hung at a distance of 75 cm from } A\text{. The tension in the string at } A \text{ is:}$ 1 107 Recommended Questions $2mg$, $0.5mg$... 4 Edit Delete
10283 $\text{A rod of weight } w \text{ is supported by two parallel knife edges, } A \text{ and } B\text{, and is in equilibrium in a horizontal position. The knives are at a distance } d \text{ from each other. The centre of mass of the rod is at a distance } x \text{ from } A\text{. The normal reaction on } A \text{ is:}$ 1 107 Recommended Questions $\frac{wx}{d}$, $\frac{wd}{x}$... 4 Edit Delete
10282 $\text{A force } \vec{F} = (2\hat{i} + 3\hat{j} + 4\hat{k}) \text{ N is acting at point } (2 \text{ m}, -3 \text{ m}, 6 \text{ m}). \text{ Find the torque of this force about a point whose position vector is } (2\hat{i} + 5\hat{j} + 3\hat{k}) \text{ m.}$ 1 107 Recommended Questions $\vec{\tau} = (-17\hat{i} + 6\hat{j} + 4\hat{k}) \text{ N-m}$, $\vec{\tau} = (-17\hat{i} + 6\hat{j} - 4\hat{k}) \text{ N-m}$... 4 Edit Delete
10281 $\text{A uniform beam, 3.0 m long, of weight 100 N has a 300 N weight placed 0.5 m from one end. The beam is suspended by a string 1.0 m from the same end. A diagram of the weights placed on the beam is given below:}$ $\text{How far from the other end must a weight of 80 N be placed for the beam to be balanced?}$ 1 107 Recommended Questions $0.75 \text{ m}$, $2.25 \text{ m}$... 1 Edit Delete
10280 $\text{A force } \vec{F} = \hat{i} + 2\hat{j} + 3\hat{k} \text{ N acts at a point } 4\hat{i} + 3\hat{j} - \hat{k} \text{ m. Let the magnitude of the torque about the point } \hat{i} + 2\hat{j} + \hat{k} \text{ m be } \sqrt{x} \text{ N-m. The value of } x \text{ is:}$ 1 107 Recommended Questions $145$, $195$... 2 Edit Delete
10279 \text{Which of the following is the value of the torque of force } \vec{F} \text{ about origin } O \text{:} \vec{F} = (5\sqrt{3}\hat{i} + 5\hat{j}) \text{ N} \text{Point coordinates: } (1, 1) 1 107 Recommended Questions $\vec{\tau} = 5(1 - \sqrt{3})\hat{k} \text{ N-m}$, $\vec{\tau} = 5(1 - \sqrt{3})\hat{j} \text{ N-m}$... 1 Edit Delete
10278 $\text{A uniform cube of mass } m \text{ and side } a \text{ is placed on a frictionless horizontal surface. A vertical force } F \text{ is applied to the edge as shown in the figure. Match the following (most appropriate choice).}$ $\text{List- I}$ $\text{(a) } mg/4 < F < mg/2$ $\text{(b) } F > mg/2$ $\text{(c) } F > mg$ $\text{(d) } F = mg/4$ $\text{List- II}$ $\text{(i) cube will move up.}$ $\text{(ii) cube will not exhibit motion.}$ $\text{(iii) cube will begin to rotate and slip at A.}$ $\text{(iv) normal reaction effectively at } a/3 \text{ from A, no motion.}$ 1 107 Recommended Questions $\text{a - (i), b - (iv), c - (ii), d - (iii)}$, $\text{a - (ii), b - (iii), c - (i), d - (iv)}$... 2 Edit Delete
10277 $\text{A wheel with a radius of 20 cm has forces applied to it as shown in the figure. The torque produced by the forces of 4 N at } A\text{, 8 N at } B\text{, 6 N at } C\text{, and 9 N at } D\text{, at the angles indicated, is:}$ 1 107 Recommended Questions $5.4 \text{ N-m anticlockwise}$, $1.80 \text{ N-m clockwise}$... 2 Edit Delete
10276 $\text{In the figure given below, } O \text{ is the centre of an equilateral triangle } ABC \text{ and } \vec{F}_1, \vec{F}_2, \vec{F}_3 \text{ are three forces acting along the sides } AB, BC \text{ and } AC. \text{ What should be the magnitude of } \vec{F}_3 \text{ so that total torque about } O \text{ is zero?}$ 1 107 Recommended Questions $|\vec{F}_3| = |\vec{F}_1| + |\vec{F}_2|$, $|\vec{F}_3| = |\vec{F}_1| - |\vec{F}_2|$... 1 Edit Delete
10275 $\text{A rope of negligible mass is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30 N? (Assume that there is no slipping.)}$ 1 107 Recommended Questions $21 \text{ rad/s}^2$, $24 \text{ rad/s}^2$... 4 Edit Delete
10274 $\text{The value of } M\text{, as shown, for which the rod will be in equilibrium is:}$ 1 107 Recommended Questions $1 \text{ kg}$, $2 \text{ kg}$... 3 Edit Delete
10273 $\text{To maintain a rotor at a uniform angular speed of 200 rad s}^{-1}\text{, an engine needs to transmit a torque of 180 N-m. What is the power required by the engine?}$ 1 107 Recommended Questions $33 \text{ kW}$, $36 \text{ kW}$... 2 Edit Delete
10272 $\text{A ball is spinning on a horizontal surface, about the vertical axis passing through its centre. Its angular velocity decreases from } 2\pi \text{ rad/s to } \pi \text{ rad/s in 10 s. If the moment of inertia of the ball is } 0.5 \text{ kg/m}^2\text{, the torque acting on the ball is:}$ 1 107 Recommended Questions $-\frac{\pi}{100} \text{ N-m}$, $-\frac{\pi}{50} \text{ N-m}$... 3 Edit Delete
10271 $\text{An } ABC \text{ is a right-angled triangular plate of uniform thickness. The sides are such that } AB > BC\text{. As shown in the figure } I_1\text{, } I_2 \text{ and } I_3 \text{ are moments of inertia about } AB\text{, } BC \text{ and } AC \text{ respectively. Which of the following relation is correct?}$ 1 107 Recommended Questions $I_1 = I_2 = I_3$, $I_2 > I_1 > I_3$... 2 Edit Delete
10270 $\text{Consider two uniform discs of the same thickness and different radii } R_1 = R \text{ and } R_2 = \alpha R \text{ made of the same material. If the ratio of their moments of inertia, } I_1 \text{ and } I_2\text{, respectively, about their axes is } I_1 : I_2 = 1 : 16\text{, then the value of } \alpha \text{ is:}$ 1 107 Recommended Questions $\sqrt{2}$, $4$... 3 Edit Delete
10269 $\text{Four-point masses each of value } m \text{ are placed at the corners of a square } ABCD \text{ of side } l\text{. The moment of inertia of this system about an axis passing through } A \text{ and parallel to } BD \text{ will be:}$ 1 107 Recommended Questions $2ml^2$, $4ml^2$... 3 Edit Delete
10268 $\text{A uniform rod of mass } 2M \text{ is bent into four adjacent semicircles, each of radius } r\text{, all lying in the same plane. The moment of inertia of the bent rod about an axis through one end A and perpendicular to the plane of the rod is:}$ 1 107 Recommended Questions $22Mr^2$, $88Mr^2$... 3 Edit Delete
10267 $\text{A square lamina is as shown in the figure. The moment of inertia of the frame about the three axes is } I_1\text{, } I_2 \text{ and } I_3 \text{ respectively. Select the correct alternative.}$ 1 107 Recommended Questions $I_2 = I_3 > I_1$, $I_1 > I_2 > I_3$... 3 Edit Delete
10266 $\text{From a circular ring of mass } M \text{ and radius } R\text{, an arc corresponding to a } 90^\circ \text{ sector is removed. The moment of inertia of the remaining part of the ring about an axis passing through the centre of the ring and perpendicular to the plane of the ring is } K \text{ times } MR^2\text{. The value of } K \text{ will be:}$ 1 107 Recommended Questions $\frac{1}{4}$, $\frac{1}{8}$... 3 Edit Delete
10265 $\text{Let } I_A \text{ and } I_B \text{ be moments of inertia of a body about two axes, A and B, respectively. The axis A passes through the centre of mass of the body, but B does not. Which of the following is correct?}$ 1 107 Recommended Questions $I_A < I_B$, $\text{If } I_A < I_B\text{, the axes are parallel.}$... 3 Edit Delete
10264 $\text{Four identical solid spheres each of mass 'm' and radius 'a' are placed with their centres on the four corners of a square of side 'b'. The moment of inertia of the system about one side of the square where the axis of rotation is parallel to the plane of the square is:}$ 1 107 Recommended Questions $\frac{4}{5}ma^2 + 2mb^2$, $\frac{8}{5}ma^2 + mb^2$... 3 Edit Delete
10263 $\text{A thin wire of length } L \text{ and uniform linear mass density } \rho \text{ is bent into a circular loop with the centre at } O \text{ as shown. The moment of inertia of the loop about the axis } XX' \text{ is:}$ 1 107 Recommended Questions $\frac{\rho L^3}{8\pi^2}$, $\frac{\rho L^3}{16\pi^2}$... 4 Edit Delete
10262 $\text{Three identical spherical shells, each of mass m and radius r, are placed as shown in the figure. Consider an axis XX', which is touching two shells and passes through the diameter of the third shell. The moment of inertia of the system consisting of these three spherical shells about the XX' axis is:}$ 1 107 Recommended Questions $\frac{11}{5}mr^2$, $3mr^2$... 4 Edit Delete
10261 $\text{Four thin rods, each of mass } m \text{ and the length } L\text{, form a square. The moment of inertia on any side of the square is:}$ 1 107 Recommended Questions $\frac{5}{3}mL^2$, $4mL^2$... 1 Edit Delete
10260 $\text{The one-quarter sector is cut from a uniform circular disc of radius } R. \text{ This sector has a mass } M. \text{ It is made to rotate about a line perpendicular to its plane and passing through the centre of the original disc. Its moment of inertia about the axis of rotation will be:}$ 1 107 Recommended Questions $\frac{1}{2}MR^2$, $\frac{1}{4}MR^2$... 1 Edit Delete
10259 $\text{Four masses are joined to light circular frames as shown in the figure. The radius of gyration of this system about an axis passing through the center of the circular frame and perpendicular to its plane would be:}$ $\text{(where 'a' is the radius of the circle)}$ 1 107 Recommended Questions $\frac{a}{\sqrt{2}}$, $\frac{a}{2}$... 3 Edit Delete
10258 $\text{The radius of gyration of a uniform solid sphere about a tangent is:}$ 1 107 Recommended Questions $R\sqrt{\frac{2}{3}}$, $R\sqrt{\frac{2}{5}}$... 4 Edit Delete
10257 $\text{Three-point masses each of mass } m, \text{ are placed at the vertices of an equilateral triangle of side } a. \text{ The moment of inertia of the system through a mass } m \text{ at } O \text{ and lying in the plane of } COD \text{ and perpendicular to } OA \text{ is:}$ 1 107 Recommended Questions $2ma^2$, $\frac{2}{3}ma^2$... 3 Edit Delete
10256 $\text{In the three figures, each wire has a mass M, radius R and a uniform mass distribution. If they form part of a circle of radius R, then about an axis perpendicular to the plane and passing through the centre (shown by crosses), their moment of inertia is in the order:}$ 1 107 Recommended Questions $I_A > I_B > I_C$, $I_A = I_B = I_C$... 2 Edit Delete
10255 $\text{A light rod of length } l \text{ has two masses, } m_1 \text{ and } m_2, \text{ attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is:}$ 1 107 Recommended Questions $\frac{m_1m_2}{m_1+m_2}l^2$, $\frac{m_1+m_2}{m_1m_2}l^2$... 1 Edit Delete
10254 $\text{The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and of a circular ring of the same radius about a tangential axis in the plane of the ring will be:}$ 1 107 Recommended Questions $2 : 1$, $\sqrt{5} : \sqrt{6}$... 2 Edit Delete
10253 $\text{The moment of inertia of a uniform circular disc is maximum about an axis perpendicular to the disc and passing through:}$ 1 107 Recommended Questions $\text{B}$, $\text{C}$... 1 Edit Delete
10252 $\text{The moment of inertia of a uniform circular disc of radius } R \text{ and mass } M \text{ about an axis touching the disc at its diameter and normal to the disc will be:}$ 1 107 Recommended Questions $\frac{3}{5}MR^2$, $\frac{1}{2}MR^2$... 1 Edit Delete
10251 $\text{Five particles of mass 2 kg each are attached to the circumference of a circular disc of a radius of 0.1 m and negligible mass. The moment of inertia of the system about the axis passing through the centre of the disc and perpendicular to its plane will be:}$ 1 107 Recommended Questions $1 \text{ kg-m}^2$, $0.1 \text{ kg-m}^2$... 2 Edit Delete
10250 $\text{A particle rotating on a circular path of the radius } \frac{4}{\pi} \text{ m at 300 rpm reaches 600 rpm in 6 revolutions. If the angular velocity increases at a constant rate, find the tangential acceleration of the particle:}$ 1 107 Recommended Questions $10 \text{ m/s}^2$, $12.5 \text{ m/s}^2$... 4 Edit Delete
10249 $\text{A wheel is subjected to uniform angular acceleration about its axis. Initially, its angular velocity is zero. In the first 2 s, it rotates through an angle } \theta_1. \text{ In the next 2 s, it rotates through an additional angle } \theta_2. \text{ The ratio of } \frac{\theta_2}{\theta_1} \text{ is:}$ 1 107 Recommended Questions $1$, $2$... 3 Edit Delete
10248 $\text{Two gear wheels that are meshed together have radii of 0.50 cm and 0.15 cm. The number of revolutions made by the smaller one when the larger one goes through 3 revolutions is:}$ 1 107 Recommended Questions $5 \text{ revolutions}$, $20 \text{ revolutions}$... 4 Edit Delete
10247 $\text{What is the value of linear velocity, if the angular velocity vector is } \vec{\omega} = 3\hat{i} - 4\hat{j} + \hat{k} \text{ and the position vector is } \vec{r} = 5\hat{i} - 6\hat{j} + 6\hat{k}?$ 1 107 Recommended Questions $-18\hat{i} - 13\hat{j} + 2\hat{k}$, $18\hat{i} + 13\hat{j} - 2\hat{k}$... 1 Edit Delete
10246 $\text{A rigid body rotates about a fixed axis with a variable angular velocity equal to } \alpha - \beta t, \text{ at the time } t, \text{ where } \alpha, \beta \text{ are constants. The angle through which it rotates before it stops is:}$ 1 107 Recommended Questions $\frac{\alpha^2}{2\beta}$, $\frac{\alpha^2-\beta^2}{2\alpha}$... 1 Edit Delete
10245 $\text{The angular speed of the wheel of a vehicle is increased from 360 rpm to 1200 rpm in 14 seconds. Its angular acceleration will be:}$ 1 107 Recommended Questions $2\pi \text{ rad/s}^2$, $28\pi \text{ rad/s}^2$... 1 Edit Delete
10244 $\text{For a body, with angular velocity } \vec{\omega} = \hat{i} - 2\hat{j} + 3\hat{k} \text{ and radius vector } \vec{r} = \hat{i} + \hat{j} + \hat{k}, \text{ its velocity will be:}$ 1 107 Recommended Questions $-5\hat{i} + 2\hat{j} + 3\hat{k}$, $-5\hat{i} + 2\hat{j} - 3\hat{k}$... 1 Edit Delete
10243 $\text{An electric fan rotating at 1200 rpm is switched off. If the fan stops after 10 seconds, the number of revolutions completed by the fan before it stops will be: (assume uniform retardation)}$ 1 107 Recommended Questions $100$, $50$... 1 Edit Delete
10242 $\text{A ladder is leaned against a smooth wall and it is allowed to slip on a frictionless floor. Which figure represents the path followed by its center of mass?}$ 1 107 Recommended Questions $\text{Ladder moves in a straight line downward and to the right}$, $\text{Ladder moves in a curved path downward and to the right}$... 1 Edit Delete
10241 $\text{Given the following statements:}$ $\text{(a) The centre of gravity (C.G.) of a body is the point at which the weight of the body acts.}$ $\text{(b) If the earth is assumed to have an infinitely large radius, the centre of mass coincides with the centre of gravity.}$ $\text{(c) To evaluate the gravitational field intensity due to any body at an external point, the entire mass of the body can be considered to be concentrated at its C.G.}$ $\text{(d) The radius of gyration of any body rotating about an axis is the length of the perpendicular dropped from the C.G. of the body to the axis.}$ $\text{Which one of the following pairs of statements is correct?}$ 1 107 Recommended Questions $\text{(a) and (b)}$, $\text{(b) and (c)}$... 1 Edit Delete
10240 $\text{Two loads } P_1 \text{ and } P_2 \text{ (}P_1 > P_2\text{) are connected by a string passing over a fixed pulley. The center of gravity of loads are initially at the same height. Find the acceleration of the center of gravity of the system:}$ 1 107 Recommended Questions $\left(\frac{P_1 - P_2}{P_1 + P_2}\right)^2 g$, $\left(\frac{P_1 - P_2}{P_1 + P_2}\right) g$... 3 Edit Delete
10239 $\text{If a rod of length 3 m with its mass acting per unit length, is directly proportional to distance } x \text{ from one of its ends, then its centre of gravity from that end will be at:}$ 1 107 Recommended Questions $1.5 \text{ m}$, $2 \text{ m}$... 2 Edit Delete
10238 $\text{Four particles of mass } m_1 = 2m, m_2 = 4m, m_3 = m, \text{ and } m_4 \text{ are placed at the four corners of a square. What should be the value of } m_4 \text{ so that the centre of mass of all the four particles is exactly at the centre of the square?}$ 1 107 Recommended Questions $2m$, $8m$... 4 Edit Delete
10237 $\text{A man 'A', mass 60 kg, and another man 'B', mass 70 kg, are sitting at the two extremes of a 2 m long boat, of mass 70 kg, standing still in the water as shown. They come to the middle of the boat. (Neglect friction) How far does the boat move on the water during the process?}$ 1 107 Recommended Questions $\text{5 cm leftward}$, $\text{5 cm rightward}$... 2 Edit Delete
10236 $\text{A boat of length 10 m and a mass of 450 kg is floating without motion in still water. A man of 50 kg standing at one end walks to the other end and comes to a stop. The magnitude of the displacement of the boat relative to the ground is:}$ 1 107 Recommended Questions $\text{zero}$, $\text{1 m}$... 2 Edit Delete
10235 $\text{A man hangs from a rope attached to a hot-air balloon. The man's mass is greater than the mass of the balloon and its contents. The system is stationary in the air. If the man now climbs up the balloon using the rope, the centre of mass of the 'man plus balloon' system will:}$ 1 107 Recommended Questions $\text{remain stationary}$, $\text{move up}$... 1 Edit Delete
10234 $\text{If the linear density of a rod of length 3 m varies as } \lambda = 2 + x\text{, then the position of the center of mass of the rod is at a distance of:}$ 1 107 Recommended Questions $\frac{7}{3} \text{ m}$, $\frac{10}{7} \text{ m}$... 3 Edit Delete
10233 $\text{The center of mass of a system of particles does not depend upon:}$ 1 107 Recommended Questions $\text{position of particles}$, $\text{relative distance between particles}$... 4 Edit Delete
10232 $\text{Two particles of masses 2 kg and 3 kg start to move towards each other due to mutual forces of attraction. The speed of the first particle is } v_1 \text{ and that of the second is } v_2 \text{ at a certain instant. The speed of the centre of mass is:}$ 1 107 Recommended Questions $\frac{v_1 + v_2}{2}$, $\frac{2v_1 + 3v_2}{5}$... 4 Edit Delete
10231 $\text{The coordinates of the centre of mass of a uniform plate of shape as shown in the figure are:}$ 1 107 Recommended Questions $\frac{L}{2}, \frac{L}{2}$, $\frac{5L}{12}, \frac{5L}{12}$... 2 Edit Delete
10230 $\text{The mass per unit length of a non-uniform rod of length } L \text{ is given by } \mu = \lambda x^2 \text{ where } \lambda \text{ is a constant and } x \text{ is the distance from one end of the rod. The distance between the centre of mass of the rod and this end is:}$ 1 107 Recommended Questions $\frac{L}{2}$, $\frac{L}{4}$... 3 Edit Delete
10229 $\text{Three identical spheres, each of mass } M, \text{ are placed at the corners of a right-angle triangle with mutually perpendicular sides equal to 2 m (see figure). Taking the point of intersection of the two mutually perpendicular sides as the origin, find the position vector of the centre of mass.}$ 1 107 Recommended Questions $\frac{2}{3}(\hat{i} + \hat{j})$, $(\hat{i} + \hat{j})$... 3 Edit Delete
10228 $\text{A bomb is projected from the ground at a horizontal range of } R. \text{ If the bomb explodes mid-air, then the range of its centre of mass is:}$ 1 107 Recommended Questions $\frac{R}{2}$, $R$... 2 Edit Delete
10227 $\text{At } t = 0, \text{ the positions of the two blocks are shown. There is no external force acting on the system. Find the coordinates of the centre of mass of the system (in SI units) at } t = 3 \text{ seconds.}$ 1 107 Recommended Questions $(1, 0)$, $(3, 0)$... 4 Edit Delete
10226 $\text{A man of 50 kg mass is standing in a gravity-free space at a height of 10 m above the floor. He throws a stone of 0.5 kg mass downwards with a speed of 2 ms}^{-1}\text{. When the stone reaches the floor, the distance of the man above the floor will be:}$ 1 107 Recommended Questions $9.9 \text{ m}$, $10.1 \text{ m}$... 2 Edit Delete
10225 $\text{Five uniform circular plates, each of diameter } D \text{ and mass } m, \text{ are laid out in a pattern shown. Using the origin shown, the } y\text{-coordinate of the centre of mass of the "five-plate" system will be:}$ 1 107 Recommended Questions $\frac{2D}{5}$, $\frac{4D}{5}$... 2 Edit Delete
10224 $\text{The centre of the mass of 3 particles, 10 kg, 20 kg, and 30 kg, is at }(0, 0, 0)\text{. Where should a particle with a mass of 40 kg be placed so that its combined centre of mass is }(3, 3, 3)\text{?}$ 1 107 Recommended Questions $(0, 0, 0)$, $(7.5, 7.5, 7.5)$... 2 Edit Delete
10223 $\text{The coordinates of the position of masses } m_1 = 7 \text{ gm}, m_2 = 4 \text{ gm}, m_3 = 10 \text{ gm are } \vec{r}_1 = (\hat{i} + 5\hat{j} - 3\hat{k}), \vec{r}_2 = (2\hat{i} + 5\hat{j} + 7\hat{k}), \vec{r}_3 = (3\hat{i} + 3\hat{j} - \hat{k}) \text{ respectively in cm. The position of the centre of mass of the system would be:}$ 1 107 Recommended Questions $\left(-\frac{15}{7}, \frac{85}{17}, \frac{1}{7}\right) \text{ cm}$, $\left(\frac{15}{7}, -\frac{85}{17}, \frac{1}{7}\right) \text{ cm}$... 3 Edit Delete
10222 $\text{A uniform square plate }ABCD\text{ has a mass of 10 kg. If two point masses of 5 kg each are placed at the corners }C\text{ and }D\text{ as shown in the adjoining figure, then the centre of mass shifts to the mid-point of:}$ 1 107 Recommended Questions $OH$, $DH$... 1 Edit Delete
10221 $\text{Three masses are placed on the x-axis: 300 g at the origin, 500 g at } x = 40 \text{ cm, and 400 g at } x = 70 \text{ cm. The distance of the center of mass from the origin is:}$ 1 107 Recommended Questions $40 \text{ cm}$, $45 \text{ cm}$... 1 Edit Delete
10220 $\text{An insect, initially on the circumference of a disc, starts moving along a chord of the disc, rotating about an axis passing through the center and perpendicular to the plane of the disc. Its angular speed:}$ 1 106 Recommended Questions $\text{increases.}$, $\text{decreases.}$... 3 Edit Delete
10219 $\text{Which of the following will not be affected if the radius of the sphere is increased while keeping mass constant?}$ 1 106 Recommended Questions $\text{Moment of inertia}$, $\text{Angular momentum}$... 2 Edit Delete
10218 $\text{Given below are two statements:}$ $\text{Assertion (A): If the ice on the polar caps of the earth melts, then the length of the day will increase.}$ $\text{Reason (R): Moment of inertia of the earth increases, as ice on polar caps melts.}$ 1 106 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10217 $\text{If the radius of the earth is suddenly contracted to half of its present value, then the duration of the day will be of:}$ 1 106 Recommended Questions $\text{6 hours}$, $\text{12 hours}$... 1 Edit Delete
10216 $\text{The law of conservation of angular momentum is valid when:}$ 1 106 Recommended Questions $\text{The net force is zero and the net torque is non-zero}$, $\text{The net force is non-zero and the net torque is non-zero}$... 3 Edit Delete
10215 $\text{When a mass is rotating in a plane about a fixed point, its angular momentum is directed along:}$ 1 106 Recommended Questions $\text{a line perpendicular to the plane of rotation}$, $\text{the line making an angle of } 45^\circ \text{ to the plane of rotation}$... 1 Edit Delete
10214 $\text{The body of mass 1.5 kg rotating about an axis with angular velocity of 0.3 rad s}^{-1} \text{ has the angular momentum of 1.8 kg m}^2\text{s}^{-1}\text{. The radius of gyration of the body about the axis is:}$ 1 106 Recommended Questions $\text{2 m}$, $\text{1.2 m}$... 1 Edit Delete
10213 $\text{A thin uniform circular disc of mass } M \text{ and radius } R \text{ is rotating in a horizontal plane about an axis passing through its center and perpendicular to its plane with an angular velocity } \omega. \text{ Another disc of the same dimensions but of mass } \frac{1}{4}M \text{ is placed gently on the first disc co-axially. The angular velocity of the system will be:}$ 1 106 Recommended Questions $\frac{2}{5}\omega$, $\frac{4}{5}\omega$... 2 Edit Delete
10212 $\text{A horizontal heavy uniform bar of weight } W \text{ is supported at its ends by two men. At the instant, one of the men lets go off his end of the rod, the other feels the force on his hand changed to:}$ 1 106 Recommended Questions $W$, $\frac{W}{2}$... 4 Edit Delete
10211 $\text{Given below are two statements:}$ $\text{Assertion (A): If there is no external torque on a body about its centre of mass, then the velocity of the centre of mass remains constant.}$ $\text{Reason (R): The linear momentum of an isolated system remains constant.}$ 1 106 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
10210 $\text{A body of mass M is moving on a circular track of radius r in such a way that its kinetic energy K depends on the distance travelled by the body s according to relation } K = \beta s, \text{ where } \beta \text{ is a constant. The angular acceleration of the body is:}$ 1 106 Recommended Questions $\frac{\beta r}{M^2}$, $\sqrt{\frac{\beta r}{M}}$... 4 Edit Delete
10209 $\text{A circular disc is to be made by using iron and aluminium so that it acquires a maximum moment of inertia about its geometrical axis. It is possible with:}$ 1 106 Recommended Questions $\text{Aluminium in the interior and iron surrounding it}$, $\text{Iron at the interior and aluminium surrounding it}$... 1 Edit Delete
10208 $\text{The moment of inertia of a thin uniform circular disc about one of its diameter is } I. \text{ Its moment of inertia about an axis perpendicular to the circular surface and passing through its center will be:}$ 1 106 Recommended Questions $\sqrt{2I}$, $2I$... 2 Edit Delete
10207 $\text{Two uniform, thin, identical rods, each of mass } M \text{ and length } l \text{ are joined together to form a cross. What will be the moment of inertia of the cross about an axis passing through the point at which the two rods are joined and are perpendicular to the plane of the cross?}$ 1 106 Recommended Questions $\frac{Ml^2}{12}$, $\frac{Ml^2}{6}$... 2 Edit Delete
10206 $\text{The moment of inertia of a horizontal ring about its vertical axis through the centre is } mR^2. \text{ The moment of inertia about its tangent parallel to the plane is:}$ 1 106 Recommended Questions $\frac{3mR^2}{2}$, $\frac{mR^2}{4}$... 1 Edit Delete
10205 $\text{If a particle moves in a circle with a constant angular speed } (\omega) \text{ about the point } O, \text{ then its angular speed about the point } A \text{ will be:}$ 1 106 Recommended Questions $2\omega$, $\frac{\omega}{2}$... 2 Edit Delete
10204 $\text{Given below are two statements:}$ $\text{Assertion (A): The axis of rotation of a rigid body cannot lie outside the body.}$ $\text{Reason (R): It must pass through a material particle of the body.}$ 1 106 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
10203 $\text{A solid body rotates about a stationary axis according to the equation } \theta = 6t - 2t^3\text{. What is the average angular velocity over the time interval between } t = 0 \text{ and the time when the body comes to rest? (}\theta\text{: angular displacement, } t\text{: time)}$ 1 106 Recommended Questions $1 \text{ rad/s}$, $2 \text{ rad/s}$... 4 Edit Delete
10202 $\text{Particles } A \text{ and } B \text{ are separated by 10 m, as shown in the figure. If } A \text{ is at rest and } B \text{ started moving with a speed of 20 m/s then the angular velocity of } B \text{ with respect to } A \text{ at that instant is:}$ 1 106 Recommended Questions $1 \text{ rad/s}$, $1.5 \text{ rad/s}$... 1 Edit Delete
10201 $\text{If a body is moving in a circular path with decreasing speed, then (symbols have their usual meanings):}$ 1 106 Recommended Questions $\vec{r} \cdot \vec{\omega} = 0$, $\vec{\tau} \cdot \vec{v} = 0$... 4 Edit Delete
10200 $\text{For a rigid body rotating about a fixed axis, which of the following quantities is the same at an instant for all the particles of the body?}$ 1 106 Recommended Questions $\text{Angular acceleration}$, $\text{Angular velocity}$... 4 Edit Delete
10199 $\text{A wheel has an angular acceleration of } 3.0 \text{ rad/s}^2 \text{ and an initial angular speed of } 2.00 \text{ rad/s. In a time of } 2 \text{ s, it has rotated through an angle (in radians) of:}$ 1 106 Recommended Questions $6$, $10$... 2 Edit Delete
10198 $\text{Two particles of mass, 2 kg and 4 kg, are projected from the top of a tower simultaneously, such that 2 kg of mass is projected with a speed 20 m/s at an angle 30° above horizontal and 4 kg is projected at 40 m/s horizontally. The acceleration of the centre of mass of the system of two particles will be:}$ 1 106 Recommended Questions $\frac{g}{2}$, $\frac{g}{4}$... 3 Edit Delete
10197 $\text{A uniform rod of length } 1 \text{ m and mass } 2 \text{ kg is suspended by two vertical inextensible strings as shown in the following figure. The tension } T \text{ (in newtons) in the left string at the instant when the right string snaps is:}$ $(g = 10 \text{ m/s}^2)$ 1 106 Recommended Questions $2.5 \text{ N}$, $5 \text{ N}$... 2 Edit Delete
10196 $\text{A solid cylinder of mass 50 kg and radius 0.5 m is free to rotate about the horizontal axis. A massless string is wound around the cylinder with one end attached to it and the other end hanging freely. The tension in the string required to produce an angular acceleration of 2 rev/s}^2 \text{ will be:}$ 1 106 Recommended Questions $25 \text{ N}$, $50 \text{ N}$... 4 Edit Delete
10195 $\text{A uniform rod of length } l \text{ is hinged at one end and is free to rotate in the vertical plane. The rod is released from its position, making an angle } \theta \text{ with the vertical. The acceleration of the free end of the rod at the instant it is released is:}$ 1 106 Recommended Questions $\frac{3g\sin\theta}{4}$, $\frac{3g\cos\theta}{2}$... 3 Edit Delete
10194 $\text{Two rotating bodies A and B of masses } m \text{ and } 2m \text{ with moments of inertia } I_A \text{ and } I_B \text{ (}I_B > I_A\text{) have equal kinetic energy of rotation. If } L_A \text{ and } L_B \text{ be their angular momenta respectively, then:}$ 1 106 Recommended Questions $L_A = \frac{L_B}{2}$, $L_A = 2L_B$... 3 Edit Delete
10193 $\text{A rigid body rotates with an angular momentum of } L. \text{ If its kinetic energy is halved, the angular momentum becomes:}$ 1 106 Recommended Questions $L$, $L/2$... 4 Edit Delete
10192 \text{Given below are two statements:} \text{Assertion (A): For a body under translatory as well as rotational equilibrium, net torque about any axis is zero.} \text{Reason (R): Together } \sum \vec{F}_i = 0 \text{ and } \sum (\vec{r}_i \times \vec{F}_i) = 0 \text{ implies that } \sum (\vec{r}_i - \vec{r}_0) \times \vec{F}_i = 0. 1 106 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
10191 $\text{A string is wrapped along the rim of a wheel of the moment of inertia } 0.10 \text{ kg-m}^2 \text{ and radius } 10 \text{ cm. If the string is now pulled by a force of } 10 \text{ N, then the wheel starts to rotate about its axis from rest. The angular velocity of the wheel after } 2 \text{ s will be:}$ 1 106 Recommended Questions $40 \text{ rad/s}$, $80 \text{ rad/s}$... 4 Edit Delete
10190 $\text{A wheel is rotating about an axis through its centre at } 720 \text{ rpm. It is acted upon by a constant torque opposing its motion for } 8 \text{ seconds to bring it to rest finally. The value of torque in (N-m) is:}$ $\text{(given } I = \frac{24}{\pi} \text{ kg.m}^2\text{)}$ 1 106 Recommended Questions $48$, $72$... 2 Edit Delete
10189 $\text{A bob of mass m attached to an inextensible string of length l is suspended from vertical support. The bob rotates in a horizontal circle with an angular speed } \omega \text{ rad/s about the vertical. About the point of suspension:}$ 1 106 Recommended Questions $\text{Angular momentum is conserved}$, $\text{Angular momentum changes in magnitude but not in the direction}$... 3 Edit Delete
10188 $\text{A child is standing on the edge of a merry-go-round that has the shape of a disk, as shown in the figure. The mass of the child is 40 kilograms. The merry-go-round has a mass of 200 kilograms and a radius of 2.5 meters, and it is rotating with an angular velocity of } \omega = 2.0 \text{ radians per second. The child then walks slowly towards the center of the merry-go-round. When the child reaches the center, what is the angular velocity of the disc? (The size of the child can be neglected.)}$ 1 106 Recommended Questions $2.0 \text{ rad/s}$, $2.2 \text{ rad/s}$... 4 Edit Delete
10187 $\text{A billiard ball of mass m and radius r, when hit in a horizontal direction by a cue at a height h above its centre, acquires a linear velocity } v_0 \text{. The angular velocity } \omega_0 \text{ acquired by the ball will be:}$ 1 106 Recommended Questions $\frac{5v_0r^2}{2h}$, $\frac{2v_0r^2}{5h}$... 4 Edit Delete
10186 $\text{A particle of mass m moves with a constant velocity along 3 different paths, DE, OA and BC. Which of the following statements is not correct about its angular momentum about point O?}$ 1 106 Recommended Questions $\text{It is zero when it is at A and moving along OA.}$, $\text{The same at all points along the line DE.}$... 4 Edit Delete
10185 $\text{A circular platform is mounted on a frictionless vertical axle. Its radius is R = 2m and its moment of inertia about the axle is 200 kg m}^2\text{. Initially, it is at rest. A 50 kg man stands on the edge of the platform and begins to walk along the edge at a speed of 1 m s}^{-1}\text{ relative to the ground. The time taken by the man to complete one revolution is:}$ 1 106 Recommended Questions $\pi \text{ sec}$, $\frac{3\pi}{2} \text{ sec}$... 3 Edit Delete
10184 $\text{A uniform rod on a smooth horizontal table is moving with uniform horizontal speed } v\text{. Suddenly rod is hinged at the center of the rod. The angular velocity of the rod, now, will be:}$ 1 106 Recommended Questions $\frac{2v}{3l}$, $\frac{3v}{2l}$... 4 Edit Delete
10183 $\text{A uniform rod of mass m and length l is in uniform translational motion. If one of its ends is suddenly hinged then (hinge is smooth):}$ 1 106 Recommended Questions $\text{It will continue its translational motion.}$, $\text{It will now be in pure rotational motion about the hinged end.}$... 2 Edit Delete
10182 $\text{The position of a particle is given by } \vec{r} = \hat{i} + 2\hat{j} - \hat{k} \text{ and momentum } \vec{P} = (3\hat{i} + 4\hat{j} - 2\hat{k})\text{. The angular momentum is perpendicular to:}$ 1 106 Recommended Questions $\text{X-axis}$, $\text{Y-axis}$... 1 Edit Delete
10181 $\text{A particle is moving with a constant velocity along a line parallel to the positive x-axis. The magnitude of its angular momentum with respect to the origin is:}$ 1 106 Recommended Questions $\text{zero}$, $\text{increasing with } x$... 4 Edit Delete
10180 $\text{A particle of mass } m \text{ moves in the } XY \text{ plane with a velocity of } v \text{ along the straight line } AB\text{. If the angular momentum of the particle about the origin } O \text{ is } L_A \text{ when it is at } A \text{ and } L_B \text{ when it is at } B\text{, then:}$ 1 106 Recommended Questions $L_A > L_B$, $L_A = L_B$... 2 Edit Delete
10179 $\text{A force } \vec{F} = \alpha\hat{i} + 3\hat{j} + 6\hat{k} \text{ is acting at a point } \vec{r} = 2\hat{i} - 6\hat{j} - 12\hat{k}\text{. The value of } \alpha \text{ for which angular momentum is conserved about the origin is:}$ 1 106 Recommended Questions $-1$, $2$... 1 Edit Delete
10178 $\text{A solid sphere of mass } m \text{ is in pure rolling motion with the centre of mass moving with velocity } v_0\text{. It's angular momentum about the point } P \text{ shown in the diagram is:}$ 1 106 Recommended Questions $\frac{2}{5}mv_0R$, $\frac{1}{5}mv_0R$... 3 Edit Delete
10177 \text{The figure below shows two identical particles 1 and 2, each of mass } m\text{, moving in opposite directions with the same speed } v \text{ along parallel lines.} \text{At a particular instant, } r_1 \text{ and } r_2 \text{ are their respective position vectors drawn from point A, which is in the plane of the parallel lines.} \text{Consider the following statements:} \text{(a) angular momentum } l_1 \text{ of particle 1 about A is } l_1 = mv(d_1) \hat{k} \text{(b) angular momentum } l_2 \text{ of particle 2 about A is } l_2 = mv(r_2) \hat{k} \text{(c) total angular momentum of the system about A is } l = mv(r_1 + r_2) \hat{k} \text{(d) total angular momentum of the system about A is } l = mv(d_2 - d_1) \hat{k} \text{Choose the correct option from the given ones:} 1 106 Recommended Questions $\text{(a), (c) only}$, $\text{(a), (d) only}$... 2 Edit Delete
10176 $\text{A rod is falling down with constant velocity } V_0 \text{ as shown. It makes contact with hinge A and rotates around it. The angular velocity of the rod just after the moment when it comes in contact with hinge A is:}$ 1 106 Recommended Questions $\frac{2V_0}{3L}$, $\frac{3V_0}{2L}$... 2 Edit Delete
10175 $\text{A ring of mass of 10 kg and diameter of 0.4 m is rotated about its axis. If it makes 2100 revolutions per minute, then its angular momentum will be:}$ 1 106 Recommended Questions $44 \text{ kg m}^2 \text{ s}^{-1}$, $88 \text{ kg m}^2 \text{ s}^{-1}$... 2 Edit Delete
10174 $\text{Two discs are rotating about their axes, normal to the discs and passing through the centres of the discs. Disc D}_1 \text{ has a 2 kg mass, 0.2 m radius, and an initial angular velocity of 50 rad s}^{-1}\text{. Disc D}_2 \text{ has 4 kg mass, 0.1 m radius, and initial angular velocity of 200 rad s}^{-1}\text{. The two discs are brought in contact face to face, with their axes of rotation coincident. The final angular velocity (in rad.s}^{-1}\text{) of the system will be:}$ 1 106 Recommended Questions $60$, $100$... 2 Edit Delete
10173 $\text{A boy is standing on a disc rotating about the vertical axis passing through its centre. He pulls his arms towards himself, reducing his moment of inertia by a factor of m. The new angular speed of the disc becomes double its initial value. If the moment of inertia of the boy is } I_0\text{, then the moment of inertia of the disc will be:}$ 1 106 Recommended Questions $2I_0m$, $I_0\left(1 - \frac{2}{m}\right)$... 2 Edit Delete
10172 $\text{A solid sphere of mass } M \text{ and the radius } R \text{ is in pure rolling with angular speed } \omega \text{ on a horizontal plane as shown in the figure. The magnitude of the angular momentum of the sphere about the origin } O \text{ is:}$ 1 106 Recommended Questions $\frac{7}{5}MR^2\omega$, $\frac{3}{2}MR^2\omega$... 1 Edit Delete
10171 $\text{A thin circular ring of mass } M \text{ and radius } R \text{ is rotating in a horizontal plane about an axis vertical to its plane with a constant angular velocity } \omega. \text{ If two objects each of mass } m \text{ are attached gently to the opposite ends of the diameter of the ring, the ring will then rotate with an angular velocity:}$ 1 106 Recommended Questions $\frac{\omega(M-2m)}{M+2m}$, $\frac{\omega M}{M+2m}$... 2 Edit Delete
10170 $\text{A uniform cubical block of side } L \text{ rests on a rough horizontal surface with coefficient of friction } \mu. \text{ A horizontal force } F \text{ is applied on the block as shown. If there is sufficient friction between the block and the ground, then the torque due to normal reaction about its centre of mass is:}$ 1 106 Recommended Questions $\text{Zero}$, $FL$... 2 Edit Delete
10169 $\text{A force } -F\hat{k} \text{ acts on O, the origin of the coordinate system. The torque at the point } (1, -1) \text{ will be:}$ 1 106 Recommended Questions $-F(\hat{i} + \hat{j})$, $F(\hat{i} + \hat{j})$... 1 Edit Delete
10168 $\text{On a rough horizontal surface (coefficient of friction } \mu\text{), a cubical block of side 'a' and mass m is projected horizontally. The net torque on the block about its centre of mass till the block stops is equal to:}$ 1 106 Recommended Questions $\text{zero}$, $\frac{1}{2}\mu mga$... 1 Edit Delete
10167 \text{The figure shows a lamina in XY-plane. Two axes } z \text{ and } z' \text{ pass} \text{perpendicular to its plane. A force } \vec{F} \text{ acts in the plane of the lamina} \text{at point P as shown. (The point P is closer to the } z'\text{-axis than the } z\text{-axis.)} \text{(a) torque } \vec{\tau} \text{ caused by } \vec{F} \text{ about } z\text{-axis is along } -\hat{k} \text{(b) torque } \vec{\tau}' \text{ caused by } \vec{F} \text{ about } z'\text{-axis is along } -\hat{k} \text{(c) torque caused by } \vec{F} \text{ about the } z\text{-axis is greater in} \text{magnitude than that about the } z'\text{-axis} \text{(d) total torque is given by } \vec{\tau}_{\text{net}} = \vec{\tau} + \vec{\tau}' 1 106 Recommended Questions $(c, d)$, $(a, c)$... 3 Edit Delete
10166 $\text{A meter stick is balanced on a knife edge at its center. When two coins, each of the mass 5 gm are put one on top of the other at the 12.0 cm mark, the stick is found to be balanced at 45.0 cm. What is the mass of the meter stick?}$ 1 106 Recommended Questions $\text{66 gm}$, $\text{56 gm}$... 1 Edit Delete
10165 $\text{For L = 3.0 m, the total torque about pivot A provided by the forces as shown in the figure is:}$ 1 106 Recommended Questions $210 \text{ Nm}$, $140 \text{ Nm}$... 4 Edit Delete
10164 $\text{Shown in the figure is a rigid and uniform one-metre long rod, } AB\text{, held in the horizontal position by two strings tied to its ends and attached to the ceiling. The rod is of mass } m \text{ and has another weight of mass } 2m \text{ hung at a distance of 75 cm from } A\text{. The tension in the string at } A \text{ is:}$ 1 106 Recommended Questions $2mg$, $0.5mg$... 4 Edit Delete
10163 $\text{A rod of weight } w \text{ is supported by two parallel knife edges, } A \text{ and } B \text{, and is in equilibrium in a horizontal position. The knives are at a distance } d \text{ from each other. The centre of mass of the rod is at a distance } x \text{ from } A \text{. The normal reaction on } A \text{ is:}$ 1 106 Recommended Questions $\frac{wx}{d}$, $\frac{wd}{x}$... 4 Edit Delete
10162 $\text{A force } \vec{F} = (2\hat{i} + 3\hat{j} + 4\hat{k}) \text{ N is acting at point } (2\text{ m}, -3\text{ m}, 6\text{ m}). \text{ Find the torque of this force about a point whose position vector is } (2\hat{i} + 5\hat{j} + 3\hat{k}) \text{ m.}$ 1 106 Recommended Questions $\vec{\tau} = (-17\hat{i} + 6\hat{j} + 4\hat{k}) \text{ N-m}$, $\vec{\tau} = (-17\hat{i} + 6\hat{j} - 4\hat{k}) \text{ N-m}$... 4 Edit Delete
10161 $\text{A uniform beam, 3.0 m long, of weight 100 N has a 300 N weight placed 0.5 m from one end. The beam is suspended by a string 1.0 m from the same end. A diagram of the weights placed on the beam is given below:}$ $\text{How far from the other end must a weight of 80 N be placed for the beam to be balanced?}$ 1 106 Recommended Questions $\text{0.75 m}$, $\text{2.25 m}$... 1 Edit Delete
10160 $\text{A force } \vec{F} = \hat{i} + 2\hat{j} + 3\hat{k} \text{ N acts at a point } 4\hat{i} + 3\hat{j} - \hat{k} \text{ m. Let the magnitude of the torque about the point } \hat{i} + 2\hat{j} + \hat{k} \text{ m be } \sqrt{x} \text{ N-m. The value of } x \text{ is:}$ 1 106 Recommended Questions $145$, $195$... 2 Edit Delete
10159 \text{Which of the following is the value of the torque of force } \vec{F} \text{ about origin } O\text{?} \text{Given: } \vec{F} = (5\sqrt{3} \hat{i} + 5\hat{j}) \text{ N and position vector from origin to point of application is } \vec{r} = (\hat{i} + \hat{j}) 1 106 Recommended Questions $\vec{\tau} = 5(1 - \sqrt{3})\hat{k} \text{ N-m}$, $\vec{\tau} = 5(1 - \sqrt{3})\hat{j} \text{ N-m}$... 1 Edit Delete
10158 $\text{A uniform cube of mass } m \text{ and side } a \text{ is placed on a frictionless horizontal surface. A vertical force } F \text{ is applied to the edge as shown in the figure. Match the following (most appropriate choice).}$ $\text{List- I}$ $\text{(a) } mg/4 < F < mg/2$ $\text{(b) } F > mg/2$ $\text{(c) } F > mg$ $\text{(d) } F = mg/4$ $\text{List- II}$ $\text{(i) cube will move up.}$ $\text{(ii) cube will not exhibit motion.}$ $\text{(iii) cube will begin to rotate and slip at A.}$ $\text{(iv) normal reaction effectively at } a/3 \text{ from A, no motion.}$ 1 106 Recommended Questions $\text{a - (i), b - (iv), c - (ii), d - (iii)}$, $\text{a - (ii), b - (iii), c - (i), d - (iv)}$... 2 Edit Delete
10157 $\text{A wheel with a radius of 20 cm has forces applied to it as shown in the figure. The torque produced by the forces of 4 N at } A\text{, 8 N at } B\text{, 6 N at } C\text{, and 9 N at } D\text{, at the angles indicated, is:}$ 1 106 Recommended Questions $5.4 \text{ N-m anticlockwise}$, $1.80 \text{ N-m clockwise}$... 2 Edit Delete
10156 $\text{In the figure given below, } O \text{ is the centre of an equilateral triangle } ABC \text{ and } \vec{F}_1, \vec{F}_2, \vec{F}_3 \text{ are three forces acting along the sides } AB, BC \text{ and } AC. \text{ What should be the magnitude of } \vec{F}_3 \text{ so that total torque about } O \text{ is zero?}$ 1 106 Recommended Questions $|\vec{F}_3| = |\vec{F}_1| + |\vec{F}_2|$, $|\vec{F}_3| = |\vec{F}_1| - |\vec{F}_2|$... 1 Edit Delete
10155 $\text{A rope of negligible mass is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a force of 30 N?}$ $\text{(Assume that there is no slipping.)}$ 1 106 Recommended Questions $21 \text{ rad/s}^2$, $24 \text{ rad/s}^2$... 4 Edit Delete
10154 $\text{The value of } M, \text{ as shown, for which the rod will be in equilibrium is:}$ $\text{[A rod is supported at a fulcrum point, with a 6 kg mass at 20 cm from the fulcrum on the left side, and mass } M \text{ at 30 cm from the fulcrum on the right side]}$ 1 106 Recommended Questions $1 \text{ kg}$, $2 \text{ kg}$... 3 Edit Delete
10153 $\text{To maintain a rotor at a uniform angular speed of 200 rad s}^{-1}, \text{ an engine needs to transmit a torque of 180 N-m. What is the power required by the engine?}$ 1 106 Recommended Questions $33 \text{ kW}$, $36 \text{ kW}$... 2 Edit Delete
10152 $\text{A ball is spinning on a horizontal surface, about the vertical axis passing through its centre. Its angular velocity decreases from } 2\pi \text{ rad/s to } \pi \text{ rad/s in 10 s. If the moment of inertia of the ball is } 0.5 \text{ kg/m}^2\text{, the torque acting on the ball is:}$ 1 106 Recommended Questions $-\frac{\pi}{100} \text{ N-m}$, $-\frac{\pi}{50} \text{ N-m}$... 3 Edit Delete
10151 $\text{An } ABC \text{ is a right-angled triangular plate of uniform thickness. The sides are such that } AB > BC. \text{ As shown in the figure } I_1, I_2 \text{ and } I_3 \text{ are moments of inertia about } AB, BC \text{ and } AC \text{ respectively. Which of the following relation is correct?}$ 1 106 Recommended Questions $I_1 = I_2 = I_3$, $I_2 > I_1 > I_3$... 2 Edit Delete
10150 $\text{Consider two uniform discs of the same thickness and different radii } R_1 = R \text{ and } R_2 = \alpha R \text{ made of the same material. If the ratio of their moments of inertia, } I_1 \text{ and } I_2\text{, respectively, about their axes is } I_1 : I_2 = 1 : 16\text{, then the value of } \alpha \text{ is:}$ 1 106 Recommended Questions $\sqrt{2}$, $4$... 3 Edit Delete
10149 $\text{Four-point masses each of value } m \text{ are placed at the corners of a square } ABCD \text{ of side } l. \text{ The moment of inertia of this system about an axis passing through } A \text{ and parallel to } BD \text{ will be:}$ 1 106 Recommended Questions $2ml^2$, $4ml^2$... 3 Edit Delete
10148 $\text{A uniform rod of mass } 2M \text{ is bent into four adjacent semicircles, each of radius } r\text{, all lying in the same plane. The moment of inertia of the bent rod about an axis through one end A and perpendicular to the plane of the rod is:}$ 1 106 Recommended Questions $22Mr^2$, $88Mr^2$... 3 Edit Delete
10147 $\text{A square lamina is as shown in the figure. The moment of inertia of the frame about the three axes is } I_1, I_2 \text{ and } I_3 \text{ respectively. Select the correct alternative.}$ 1 106 Recommended Questions $I_2 = I_3 > I_1$, $I_1 > I_2 > I_3$... 3 Edit Delete
10146 $\text{From a circular ring of mass } M \text{ and radius } R\text{, an arc corresponding to a } 90^\circ \text{ sector is removed. The moment of inertia of the remaining part of the ring about an axis passing through the centre of the ring and perpendicular to the plane of the ring is } K \text{ times } MR^2\text{. The value of } K \text{ will be:}$ 1 106 Recommended Questions $\frac{1}{4}$, $\frac{1}{8}$... 3 Edit Delete
10145 $\text{Let } I_A \text{ and } I_B \text{ be moments of inertia of a body about two axes, A and B, respectively. The axis A passes through the centre of mass of the body, but B does not. Which of the following is correct?}$ 1 106 Recommended Questions $I_A < I_B$, $\text{If } I_A < I_B, \text{ the axes are parallel.}$... 3 Edit Delete
10144 $\text{Four identical solid spheres each of mass 'm' and radius 'a' are placed with their centres on the four corners of a square of side 'b'. The moment of inertia of the system about one side of the square where the axis of rotation is parallel to the plane of the square is:}$ 1 106 Recommended Questions $\frac{4}{5}ma^2 + 2mb^2$, $\frac{8}{5}ma^2 + mb^2$... 3 Edit Delete
10143 $\text{A thin wire of length } L \text{ and uniform linear mass density } \rho \text{ is bent into a circular loop with the centre at } O \text{ as shown. The moment of inertia of the loop about the axis } XX' \text{ is:}$ 1 106 Recommended Questions $\frac{\rho L^3}{8\pi^2}$, $\frac{\rho L^3}{16\pi^2}$... 4 Edit Delete
10142 $\text{Three identical spherical shells, each of mass m and radius r, are placed as shown in the figure. Consider an axis XX', which is touching two shells and passes through the diameter of the third shell. The moment of inertia of the system consisting of these three spherical shells about the XX' axis is:}$ 1 106 Recommended Questions $\frac{11}{5}mr^2$, $3mr^2$... 4 Edit Delete
10141 $\text{Four thin rods, each of mass } m \text{ and the length } L, \text{ form a square. The moment of inertia on any side of the square is:}$ 1 106 Recommended Questions $\frac{5}{3}mL^2$, $4mL^2$... 1 Edit Delete
10140 $\text{The one-quarter sector is cut from a uniform circular disc of radius } R. \text{ This sector has a mass } M. \text{ It is made to rotate about a line perpendicular to its plane and passing through the centre of the original disc. Its moment of inertia about the axis of rotation will be:}$ 1 106 Recommended Questions $\frac{1}{2}MR^2$, $\frac{1}{4}MR^2$... 1 Edit Delete
10139 $\text{Four masses are joined to light circular frames as shown in the figure. The radius of gyration of this system about an axis passing through the center of the circular frame and perpendicular to its plane would be:}$ $\text{(where 'a' is the radius of the circle)}$ 1 106 Recommended Questions $\frac{a}{\sqrt{2}}$, $\frac{a}{2}$... 3 Edit Delete
10138 $\text{The radius of gyration of a uniform solid sphere about a tangent is:}$ 1 106 Recommended Questions $R\sqrt{\frac{2}{3}}$, $R\sqrt{\frac{2}{5}}$... 4 Edit Delete
10137 $\text{Three-point masses each of mass } m \text{ are placed at the vertices of an equilateral triangle of side } a. \text{ The moment of inertia of the system through a mass } m \text{ at } O \text{ and lying in the plane of } COD \text{ and perpendicular to } OA \text{ is:}$ 1 106 Recommended Questions $2ma^2$, $\frac{2}{3}ma^2$... 3 Edit Delete
10136 $\text{In the three figures, each wire has a mass M, radius R and a uniform mass distribution. If they form part of a circle of radius R, then about an axis perpendicular to the plane and passing through the centre (shown by crosses), their moment of inertia is in the order:}$ 1 106 Recommended Questions $I_A > I_B > I_C$, $I_A = I_B = I_C$... 2 Edit Delete
10135 $\text{A light rod of length } l \text{ has two masses, } m_1 \text{ and } m_2, \text{ attached to its two ends. The moment of inertia of the system about an axis perpendicular to the rod and passing through the centre of mass is:}$ 1 106 Recommended Questions $\frac{m_1m_2}{m_1+m_2}l^2$, $\frac{m_1+m_2}{m_1m_2}l^2$... 1 Edit Delete
10134 $\text{The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and of a circular ring of the same radius about a tangential axis in the plane of the ring will be:}$ 1 106 Recommended Questions $2 : 1$, $\sqrt{5} : \sqrt{6}$... 2 Edit Delete
10133 $\text{The moment of inertia of a uniform circular disc is maximum about an axis perpendicular to the disc and passing through:}$ 1 106 Recommended Questions $\text{B}$, $\text{C}$... 1 Edit Delete
10132 $\text{The moment of inertia of a uniform circular disc of radius 'R' and mass 'M' about an axis touching the disc at its diameter and normal to the disc will be:}$ 1 106 Recommended Questions $\frac{3}{2}MR^2$, $\frac{1}{2}MR^2$... 1 Edit Delete
10131 $\text{Five particles of mass 2 kg each are attached to the circumference of a circular disc of a radius of 0.1 m and negligible mass. The moment of inertia of the system about the axis passing through the centre of the disc and perpendicular to its plane will be:}$ 1 106 Recommended Questions $1 \text{ kg-m}^2$, $0.1 \text{ kg-m}^2$... 2 Edit Delete
10130 $\text{A particle rotating on a circular path of the radius } \frac{4}{\pi} \text{ m at 300 rpm reaches 600 rpm in 6 revolutions. If the angular velocity increases at a constant rate, find the tangential acceleration of the particle:}$ 1 106 Recommended Questions $10 \text{ m/s}^2$, $12.5 \text{ m/s}^2$... 4 Edit Delete
10129 \text{A wheel is subjected to uniform angular acceleration about its axis. Initially, its angular velocity is zero. In the first 2 s, it rotates through an angle } \theta_1\text{. In the next 2 s, it rotates through an additional angle } \theta_2\text{.} \text{The ratio of } \frac{\theta_2}{\theta_1} \text{ is:} 1 106 Recommended Questions $1$, $2$... 3 Edit Delete
10128 $\text{Two gear wheels that are meshed together have radii of 0.50 cm and 0.15 cm. The number of revolutions made by the smaller one when the larger one goes through 3 revolutions is:}$ 1 106 Recommended Questions $\text{5 revolutions}$, $\text{20 revolutions}$... 4 Edit Delete
10127 $\text{What is the value of linear velocity, if the angular velocity vector is } \vec{\omega} = 3\hat{i} - 4\hat{j} + \hat{k} \text{ and the position vector is } \vec{r} = 5\hat{i} - 6\hat{j} + 6\hat{k}?$ 1 106 Recommended Questions $-18\hat{i} - 13\hat{j} + 2\hat{k}$, $18\hat{i} + 13\hat{j} - 2\hat{k}$... 1 Edit Delete
10126 $\text{A rigid body rotates about a fixed axis with a variable angular velocity equal to } \alpha - \beta t, \text{ at the time } t, \text{ where } \alpha, \beta \text{ are constants. The angle through which it rotates before it stops is:}$ 1 106 Recommended Questions $\frac{\alpha^2}{2\beta}$, $\frac{\alpha^2 - \beta^2}{2\alpha}$... 1 Edit Delete
10125 $\text{The angular speed of the wheel of a vehicle is increased from 360 rpm to 1200 rpm in 14 seconds. Its angular acceleration will be:}$ 1 106 Recommended Questions $2\pi \text{ rad/s}^2$, $28\pi \text{ rad/s}^2$... 1 Edit Delete
10124 $\text{For a body, with angular velocity } \vec{\omega} = \hat{i} - 2\hat{j} + 3\hat{k} \text{ and radius vector } \vec{r} = \hat{i} + \hat{j} + \hat{k}, \text{ its velocity will be:}$ 1 106 Recommended Questions $-5\hat{i} + 2\hat{j} + 3\hat{k}$, $-5\hat{i} + 2\hat{j} - 3\hat{k}$... 1 Edit Delete
10123 $\text{An electric fan rotating at 1200 rpm is switched off. If the fan stops after 10 seconds, the number of revolutions completed by the fan before it stops will be: (assume uniform retardation)}$ 1 106 Recommended Questions $100$, $50$... 1 Edit Delete
10122 $\text{A ladder is leaned against a smooth wall and it is allowed to slip on a frictionless floor. Which figure represents the path followed by its center of mass?}$ 1 106 Recommended Questions $\text{Figure 1: Ladder moving downward and to the right}$, $\text{Figure 2: Ladder moving upward and to the right}$... 1 Edit Delete
10121 $\text{Given the following statements:}$ $\text{(a) The centre of gravity (C.G.) of a body is the point at which the weight of the body acts.}$ $\text{(b) If the earth is assumed to have an infinitely large radius, the centre of mass coincides with the centre of gravity.}$ $\text{(c) To evaluate the gravitational field intensity due to any body at an external point, the entire mass of the body can be considered to be concentrated at its C.G.}$ $\text{(d) The radius of gyration of any body rotating about an axis is the length of the perpendicular dropped from the C.G. of the body to the axis.}$ $\text{Which one of the following pairs of statements is correct?}$ 1 106 Recommended Questions $\text{(a) and (b)}$, $\text{(b) and (c)}$... 1 Edit Delete
10120 $\text{Two loads } P_1 \text{ and } P_2 (P_1 > P_2) \text{ are connected by a string passing over a fixed pulley. The center of gravity of loads are initially at the same height. Find the acceleration of the center of gravity of the system:}$ 1 106 Recommended Questions $\left(\frac{P_1 - P_2}{P_1 + P_2}\right)^2 g$, $\left(\frac{P_1 - P_2}{P_1 + P_2}\right) g$... 3 Edit Delete
10119 $\text{If a rod of length 3 m with its mass acting per unit length, is directly proportional to distance } x \text{ from one of its ends, then its centre of gravity from that end will be at:}$ 1 106 Recommended Questions $\text{1.5 m}$, $\text{2 m}$... 2 Edit Delete
10118 $\text{Four particles of mass } m_1 = 2m, m_2 = 4m, m_3 = m, \text{ and } m_4 \text{ are placed at the four corners of a square. What should be the value of } m_4 \text{ so that the centre of mass of all the four particles is exactly at the centre of the square?}$ 1 106 Recommended Questions $2m$, $8m$... 4 Edit Delete
10117 $\text{A man 'A', mass 60 kg, and another man 'B', mass 70 kg, are sitting at the two extremes of a 2 m long boat, of mass 70 kg, standing still in the water as shown. They come to the middle of the boat. (Neglect friction). How far does the boat move on the water during the process?}$ 1 106 Recommended Questions $5 \text{ cm leftward}$, $5 \text{ cm rightward}$... 2 Edit Delete
10116 $\text{A boat of length 10 m and a mass of 450 kg is floating without motion in still water. A man of 50 kg standing at one end walks to the other end and comes to a stop. The magnitude of the displacement of the boat relative to the ground is:}$ 1 106 Recommended Questions $\text{zero}$, $\text{1 m}$... 2 Edit Delete
10115 $\text{A man hangs from a rope attached to a hot-air balloon. The man's mass is greater than the mass of the balloon and its contents. The system is stationary in still air. If the man now climbs up the balloon using the rope, the centre of mass of the 'man plus balloon' system will:}$ 1 106 Recommended Questions $\text{remain stationary}$, $\text{move up}$... 1 Edit Delete
10114 $\text{If the linear density of a rod of length 3 m varies as } \lambda = 2 + x\text{, then the position of the center of mass of the rod is at a distance of:}$ 1 106 Recommended Questions $\frac{7}{3} \text{ m}$, $\frac{10}{7} \text{ m}$... 3 Edit Delete
10113 $\text{The center of mass of a system of particles does not depend upon:}$ 1 106 Recommended Questions $\text{position of particles}$, $\text{relative distance between particles}$... 4 Edit Delete
10112 $\text{Two particles of masses 2 kg and 3 kg start to move towards each other due to mutual forces of attraction. The speed of the first particle is } v_1 \text{ and that of the second is } v_2 \text{ at a certain instant. The speed of the centre of mass is:}$ 1 106 Recommended Questions $\frac{v_1 + v_2}{2}$, $\frac{2v_1 + 3v_2}{5}$... 4 Edit Delete
10111 $\text{The coordinates of the centre of mass of a uniform plate of shape as shown in the figure are:}$ 1 106 Recommended Questions $\left(\frac{L}{2}, \frac{L}{2}\right)$, $\left(\frac{5L}{12}, \frac{5L}{12}\right)$... 2 Edit Delete
10110 $\text{The mass per unit length of a non-uniform rod of length } L \text{ is given by } \mu = \lambda x^2 \text{ where } \lambda \text{ is a constant and } x \text{ is the distance from one end of the rod. The distance between the centre of mass of the rod and this end is:}$ 1 106 Recommended Questions $\frac{L}{2}$, $\frac{L}{4}$... 3 Edit Delete
10109 $\text{Three identical spheres, each of mass } M, \text{ are placed at the corners of a right-angle triangle with mutually perpendicular sides equal to 2 m (see figure). Taking the point of intersection of the two mutually perpendicular sides as the origin, find the position vector of the centre of mass.}$ 1 106 Recommended Questions $2(\hat{i} + \hat{j})$, $(\hat{i} + \hat{j})$... 3 Edit Delete
10108 $\text{A bomb is projected from the ground at a horizontal range of } R. \text{ If the bomb explodes mid-air, then the range of its centre of mass is:}$ 1 106 Recommended Questions $\frac{R}{2}$, $R$... 2 Edit Delete
10107 $\text{At } t = 0\text{, the positions of the two blocks are shown. There is no external force acting on the system. Find the coordinates of the centre of mass of the system (in SI units) at } t = 3 \text{ seconds.}$ 1 106 Recommended Questions $(1, 0)$, $(3, 0)$... 4 Edit Delete
10106 $\text{A man of 50 kg mass is standing in a gravity-free space at a height of 10 m above the floor. He throws a stone of 0.5 kg mass downwards with a speed of 2 ms}^{-1}\text{. When the stone reaches the floor, the distance of the man above the floor will be:}$ 1 106 Recommended Questions $\text{9.9 m}$, $\text{10.1 m}$... 2 Edit Delete
10105 $\text{Five uniform circular plates, each of diameter } D \text{ and mass } m\text{, are laid out in a pattern shown. Using the origin shown, the } y\text{-coordinate of the centre of mass of the "five-plate" system will be:}$ 1 106 Recommended Questions $\frac{2D}{5}$, $\frac{4D}{5}$... 2 Edit Delete
10104 $\text{The centre of the mass of 3 particles, 10 kg, 20 kg, and 30 kg, is at }(0, 0, 0)\text{. Where should a particle with a mass of 40 kg be placed so that its combined centre of mass is }(3, 3, 3)\text{?}$ 1 106 Recommended Questions $(0, 0, 0)$, $(7.5, 7.5, 7.5)$... 2 Edit Delete
10103 $\text{The coordinates of the position of masses } m_1 = 7 \text{ gm}, m_2 = 4 \text{ gm}, m_3 = 10 \text{ gm are } \vec{r}_1 = (\hat{i} + 5\hat{j} - 3\hat{k}), \vec{r}_2 = (2\hat{i} + 5\hat{j} + 7\hat{k}), \vec{r}_3 = (3\hat{i} + 3\hat{j} - \hat{k}) \text{ respectively in cm. The position of the centre of mass of the system would be:}$ 1 106 Recommended Questions $\left(\frac{15}{7}, \frac{85}{17}, \frac{1}{7}\right) \text{ cm}$, $\left(\frac{15}{7}, -\frac{85}{17}, \frac{1}{7}\right) \text{ cm}$... 3 Edit Delete
10102 $\text{A uniform square plate } ABCD \text{ has a mass of 10 kg. If two point masses of 5 kg each are placed at the corners } C \text{ and } D \text{ as shown in the adjoining figure, then the centre of mass shifts to the mid-point of:}$ 1 106 Recommended Questions $OH$, $DH$... 1 Edit Delete
10101 $\text{Three masses are placed on the x-axis: 300 g at the origin, 500 g at } x = 40 \text{ cm, and 400 g at } x = 70 \text{ cm. The distance of the center of mass from the origin is:}$ 1 106 Recommended Questions $40 \text{ cm}$, $45 \text{ cm}$... 1 Edit Delete
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9926 $\text{A body of mass } m \text{ moving with speed } v \text{ collides head-on elastically with another identical body at rest. The percentage loss in kinetic energy of the first body will be:}$ 1 105 Recommended Questions $0\%$, $25\%$... 4 Edit Delete
9925 $\text{A body of mass } m \text{ moving at a certain speed suffers a perfectly inelastic collision with a body of mass } M \text{ at rest. The ratio of the final kinetic energy of the system to the initial kinetic energy will be:}$ 1 105 Recommended Questions $\frac{m}{m+M}$, $\frac{M}{m+M}$... 1 Edit Delete
9924 $\text{A car of mass 100 kg and traveling at 20 m/s collides with a truck weighing 1 tonne traveling at 9 km/h in the same direction. The car bounces back at a speed of 5 m/s. The speed of the truck after the impact will be:}$ 1 105 Recommended Questions $11.5 \text{ m/s}$, $5 \text{ m/s}$... 2 Edit Delete
9923 $\text{Which of the following remains unchanged (for the system) during an inelastic collision?}$ 1 105 Recommended Questions $\text{Mechanical energy}$, $\text{Kinetic energy}$... 3 Edit Delete
9922 $\text{The speed of a particle moving in a circular path decreases with time. The instantaneous power due to the force acting on it will be:}$ 1 105 Recommended Questions $\text{Positive}$, $\text{Negative}$... 2 Edit Delete
9921 $\text{A particle of mass m is moving in a circular path with a speed } v = kt, \text{ where k is constant and t is time. The instantaneous power delivered to the particle is:}$ 1 105 Recommended Questions $\text{Zero}$, $mkt$... 3 Edit Delete
9920 A water pump rated 400 W has an efficiency of 75%. If it is employed to raise water to a height of 40 m, then the volume of water drawn in 10 min is: 1 105 Recommended Questions $10.9 \text{ m}^3$, $0.45 \text{ m}^3$... 2 Edit Delete
9919 $\text{A pump ejects 12,000 kg of water at a speed of 4 m/s in 40 s. The average rate at which the pump is working is:}$ 1 105 Recommended Questions $\text{0.24 kW}$, $\text{2.4 W}$... 3 Edit Delete
9918 $\text{According to the work-energy theorem, the change in kinetic energy of a body is equal to work done by:}$ 1 105 Recommended Questions $\text{Non-conservative force on the particle}$, $\text{Conservative force on the particle}$... 4 Edit Delete
9917 $\text{A position-dependent force; } F = 6 + 8x - 3x^2 \text{ N acts on a small body of mass 3 kg, displacing it from } x = 0 \text{ to } x = 2 \text{ m. The work done in joule is:}$ 1 105 Recommended Questions $20$, $40$... 1 Edit Delete
9916 $\text{Work done by frictional force during the walking of a man is:}$ 1 105 Recommended Questions $\text{positive}$, $\text{negative}$... 3 Edit Delete
9915 $\text{Mark the correct statement(s):}$ 1 105 Recommended Questions $\text{Internal forces cannot increase the kinetic energy of a system.}$, $\text{Internal forces may increase the kinetic energy of a system.}$... 2 Edit Delete
9914 $\text{A body having an initial kinetic energy 2 J collides with an identical body at rest. The maximum loss of kinetic energy in the collision will be:}$ 1 105 Recommended Questions $\text{2 J}$, $\text{Zero}$... 3 Edit Delete
9913 $\text{Block A moves on a smooth surface and collides with block B at rest. The maximum energy stored in the spring will be:}$ 1 105 Recommended Questions $\frac{1}{8}mv^2$, $\frac{1}{4}mv^2$... 2 Edit Delete
9912 $\text{A block of mass m is moving with speed v towards a spring block system. If the collision is perfectly inelastic, then the maximum compression in the spring will be:}$ 1 105 Recommended Questions $v\sqrt{\frac{m}{k}}$, $v\sqrt{\frac{2m}{k}}$... 4 Edit Delete
9911 A stone is projected from a horizontal plane. It attains maximum height, }H\text{, and strikes a stationary smooth wall & falls on the ground vertically below the maximum height. Assuming the collision to be elastic, the height of the point on the wall where the ball will strike will be: 1 105 Recommended Questions $\frac{H}{2}$, $\frac{H}{4}$... 3 Edit Delete
9910 $\text{Five balls are placed one after another along a straight line as shown in the figure. Initially, all the balls are at rest. Then the second ball is projected with speed } v_0 \text{ towards the third ball. Mark the correct statement(s). (Assume all collisions to be head-on and elastic):}$ 1 105 Recommended Questions $\text{The total number of collisions in the process is 5.}$, $\text{The velocity of separation between the first and fifth ball after the last possible collision is } v_0.$... 4 Edit Delete
9909 $\text{On a frictionless surface, a block of mass } M \text{ moving at speed } v \text{ collides elastically with another block of the same mass } M \text{ which is initially at rest. After the collision, the first block moves at an angle } \theta \text{ to its initial direction and has a speed } \frac{v}{3}. \text{ The second block's speed after the collision will be:}$ 1 105 Recommended Questions $\frac{2\sqrt{2}}{3}v$, $\frac{3}{4}v$... 1 Edit Delete
9908 $\text{A body of mass 2 kg moving with a velocity of 3 m/s collides with a body of mass of 1 kg moving with a velocity of 4 m/s in the opposite direction. If the collision is head-on and completely inelastic, then the wrong statement is:}$ 1 105 Recommended Questions $\text{Both bodies move together with a velocity } \frac{2}{3} \text{ m/s.}$, $\text{The momentum of the system is 2 kg-m/s throughout.}$... 3 Edit Delete
9907 $\text{A car of mass 100 kg and traveling at 20 m/s collides with a truck weighing 1 tonne traveling at 9 km/h in the same direction. The car bounces back at a speed of 5 m/s. The speed of the truck after the impact will be:}$ 1 105 Recommended Questions $11.5 \text{ m/s}$, $5 \text{ m/s}$... 2 Edit Delete
9906 $\text{A smooth sphere of mass } M \text{, moving with velocity } u \text{, directly collides elastically with another sphere of mass } m \text{ at rest. After the collision, their final velocities are } V \text{ and } v \text{, respectively. The value of } v \text{ is:}$ 1 105 Recommended Questions $\frac{2um}{m}$, $\frac{2um}{M}$... 3 Edit Delete
9905 $\text{Two equal masses, } m_1 \text{ and } m_2\text{, moving in the same straight line at velocities } +3 \text{ m/s and } -5 \text{ m/s respectively, collide elastically. Their velocities after the collision will be:}$ 1 105 Recommended Questions $+4 \text{ m/s for both}$, $-3 \text{ m/s and } +5 \text{ m/s}$... 4 Edit Delete
9904 $\text{A body of mass 2 kg moving with a velocity of } (\hat{i} + 2\hat{j} - 3\hat{k}) \text{ m/s collides with another body of mass 3 kg moving with a velocity of } (2\hat{i} + \hat{j} + \hat{k}) \text{ m/s. If they stick together, the velocity in m/s of the composite body will be:}$ 1 105 Recommended Questions $\frac{1}{5}(8\hat{i} + 7\hat{j} - 3\hat{k})$, $\frac{1}{5}(-4\hat{i} + \hat{j} - 3\hat{k})$... 1 Edit Delete
9903 $\text{A body of mass } m \text{ accelerates uniformly from rest to } v_1 \text{ in time } t_1\text{. As a function of time } t\text{, the instantaneous power delivered to the body will be:}$ 1 105 Recommended Questions $\frac{mv_1t}{t_1}$, $\frac{mv_1^2t}{t_1}$... 4 Edit Delete
9902 $\text{A particle of mass } m \text{ is driven by a machine that delivers a constant power of } k \text{ watts. If the particle starts from rest, the force on the particle at time } t \text{ is:}$ 1 105 Recommended Questions $\sqrt{\frac{mk}{2}} t^{-1/2}$, $\sqrt{mkt} t^{-1/2}$... 1 Edit Delete
9901 A quarter horse-power motor runs at a speed of 600 rpm. Assuming 40% efficiency, the work done by the motor in one rotation will be: 1 105 Recommended Questions $7.46 \text{ J}$, $7400 \text{ J}$... 1 Edit Delete
9900 $\text{The power supplied to a particle of mass 2 kg varies with time as } P = \frac{3t^2}{2} \text{ Watt, where t is in seconds. If the velocity of a particle at t = 0 is v = 0, then the velocity of the particle at t = 2 s will be:}$ 1 105 Recommended Questions $1 \text{ m/s}$, $4 \text{ m/s}$... 3 Edit Delete
9899 $\text{A truck of mass 30,000 kg moves up an inclined plane of slope 1 in 100 }(\tan \theta = \frac{1}{100})\text{ at a speed of 30 km/h. The power of the truck is: (given }g = 10 \text{ ms}^{-2}\text{):}$ 1 105 Recommended Questions $25 \text{ kW}$, $10 \text{ kW}$... 1 Edit Delete
9898 Water falls from a height of 60 m at a rate of 15 kg/s to operate a turbine. The losses due to frictional forces are 10% of energy. How much power is generated by the turbine? }(g = 10 \text{ m/s}^2) 1 105 Recommended Questions $8.1 \text{ kW}$, $10.2 \text{ kW}$... 1 Edit Delete
9897 $\text{An engine pumps liquid of density d continuously through a pipe of cross-sectional area A. If the speed with which liquid passes through the pipe is v, then the rate at which kinetic energy is being imparted to the liquid by the pump is:}$ 1 105 Recommended Questions $Adv^2$, $\frac{1}{2}Adv^2$... 3 Edit Delete
9896 $\text{An automobile of mass } m \text{ accelerates from rest, while the engine supplies constant power } P. \text{ The speed of the automobile as a function of time, } t, \text{ is given by:}$ 1 105 Recommended Questions $v = \left(\frac{2Pt}{m}\right)^{1/2}$, $v = (2Ptm)^{1/3}$... 1 Edit Delete
9895 $\text{A particle moves with a velocity of } (5\hat{i} - 3\hat{j} + 6\hat{k}) \text{ m/s under the influence of a constant force } \vec{F} = (10\hat{i} + 10\hat{j} + 20\hat{k}) \text{ N. The instantaneous power applied to the particle is:}$ 1 105 Recommended Questions $200 \text{ J/s}$, $40 \text{ J/s}$... 3 Edit Delete
9894 $\text{A body is thrown vertically up with a certain initial velocity. The potential and the kinetic energy of the body are equal at a point P in its path. If the same body is thrown with double the velocity upwards, the ratio of the potential and the kinetic energies of the body when it crosses at the same point will be:}$ 1 105 Recommended Questions $1:1$, $1:4$... 3 Edit Delete
9893 $\text{A particle is suspended by a light rod of length } l. \text{ The minimum speed at which the particle should be projected, so that it moves in a vertical circle, is:}$ 1 105 Recommended Questions $3\sqrt{gl}$, $\sqrt{2gl}$... 3 Edit Delete
9892 $\text{A chain of length L and mass m is placed upon a smooth surface. The length of BA is (L-b). What will be the velocity of the chain when its end A reaches B?}$ 1 105 Recommended Questions $\sqrt{\frac{2g\sin\theta}{L}(L^2 - b^2)}$, $\sqrt{\frac{g\sin\theta}{2L}(L^2 - b^2)}$... 3 Edit Delete
9891 $\text{The principle of conservation of energy implies that:}$ 1 105 Recommended Questions $\text{the total mechanical energy is conserved.}$, $\text{the total kinetic energy is conserved.}$... 4 Edit Delete
9890 $\text{A spherical ball of mass 20 kg is stationary at the top of a hill of height 100 m. It slides down a smooth surface to the ground, then climbs up another hill of height 30 m and finally slides down to a horizontal base at a height of 20 m above the ground. The velocity attained by the ball is:}$ 1 105 Recommended Questions $10 \text{ m/s}$, $10\sqrt{30} \text{ m/s}$... 3 Edit Delete
9889 A ball is thrown vertically downwards from a height of \text{20 m} with an initial velocity $v_0$. It collides with the ground, loses \text{50%} of its energy in a collision and rebounds to the same height. The initial velocity $v_0$ is: (Take $g = 10 \text{ ms}^{-2}$) 1 105 Recommended Questions $14 \text{ ms}^{-1}$, $20 \text{ ms}^{-1}$... 2 Edit Delete
9888 $\text{A block of mass } M \text{ is attached to the lower end of a vertical spring. The spring is hung from the ceiling and has a force constant value of } k\text{. The mass is released from rest with the spring initially unstretched. The maximum extension produced along the length of the spring will be:}$ 1 105 Recommended Questions $\frac{Mg}{k}$, $\frac{2Mg}{k}$... 2 Edit Delete
9887 $\text{If a stone is projected vertically upward from the ground at a speed of 10 m/s, then it's: } (g = 10 \text{ m/s}^2)$ 1 105 Recommended Questions $\text{Potential energy will be maximum after 0.5 s}$, $\text{Kinetic energy will be maximum again after 1 s}$... 3 Edit Delete
9886 $\text{A body initially at rest and sliding along a frictionless track from a height } h \text{ (as shown in the figure) just completes a vertical circle of diameter } AB = D. \text{ The height } h \text{ is equal to:}$ 1 105 Recommended Questions $\frac{3}{2}D$, $D$... 4 Edit Delete
9885 $\text{When an object is shot from the bottom of a long, smooth inclined plane kept at an angle of } 60^\circ \text{ with horizontal, it can travel a distance } x_1 \text{ along the plane. But when the inclination is decreased to } 30^\circ \text{ and the same object is shot with the same velocity, it can travel } x_2 \text{ distance. Then } x_1 : x_2 \text{ will be:}$ 1 105 Recommended Questions $1 : 2\sqrt{3}$, $1 : \sqrt{2}$... 4 Edit Delete
9884 $\text{A ball is dropped from a height of 5 m. If it rebounds up to a height of 1.8 m, then the ratio of velocities of the ball after and before the rebound will be:}$ 1 105 Recommended Questions $\frac{3}{5}$, $\frac{2}{5}$... 1 Edit Delete
9883 $\text{The potential energy of a system increases if work is done:}$ 1 105 Recommended Questions $\text{by the system against a conservative force.}$, $\text{by the system against a non-conservative force.}$... 1 Edit Delete
9882 $\text{A particle of mass 'm' is moving in a horizontal circle of radius 'r' under a centripetal force equal to } -\frac{K}{r^2}, \text{ where K is a constant. The total energy of the particle will be:}$ 1 105 Recommended Questions $\frac{K}{2r}$, $-\frac{K}{2r}$... 2 Edit Delete
9881 $\text{The potential energy of a particle of mass 1 kg free to move along the X-axis is given by } U(x) = (3x^2 - 4x + 6) \text{ J. The force acting on the particle at x = 0 will be:}$ 1 105 Recommended Questions $2\hat{i} \text{ N}$, $-4\hat{i} \text{ N}$... 4 Edit Delete
9880 $\text{The figure shows the potential energy function U(x) for a system in which a particle is in a one-dimensional motion. What is the direction of the force when the particle is in region AB? (symbols have their usual meanings)}$ 1 105 Recommended Questions $\text{The positive direction of x}$, $\text{The negative direction of x}$... 1 Edit Delete
9879 $\text{The potential energy of a particle of mass m varies as the magnitude of the } U = ax^2 + by. \text{ The magnitude of the acceleration of the particle at (0, 3) is: (symbols have their usual meaning)}$ 1 105 Recommended Questions $\sqrt{\frac{b}{m}}$, $\sqrt{\frac{3b}{m}}$... 3 Edit Delete
9878 $\text{Potential energy (U) related to coordinates is given by; } U = 3(x + y). \text{ Work done by the conservative force when the particle is going from (0, 0), (2, 3) is:}$ 1 105 Recommended Questions $15 \text{ J}$, $-15 \text{ J}$... 2 Edit Delete
9877 $\text{The potential energy of a particle in a force field is } U = \frac{A}{r^2} - \frac{B}{r} \text{ where A and B are positive constants and r is the distance of the particle from the centre of the field. For stable equilibrium, the distance of the particle is:}$ 1 105 Recommended Questions $\frac{B}{A}$, $\frac{B}{2A}$... 3 Edit Delete
9876 $\text{A particle is moving such that the potential energy U varies with position in metre as } U(x) = (4x^2 - 2x + 50) \text{ J. The particle will be in equilibrium at:}$ 1 105 Recommended Questions $x = 25 \text{ cm}$, $x = 2.5 \text{ cm}$... 1 Edit Delete
9875 $\text{The potential energy of a particle varies with distance } r \text{ as shown in the graph. The force acting on the particle is equal to zero at:}$ 1 105 Recommended Questions $P$, $S$... 3 Edit Delete
9874 $\text{The potential energy } U \text{ of a system is given by } U = A - Bx^2 \text{ (where } x \text{ is the position of its particle and } A, B \text{ are constants). The magnitude of the force acting on the particle is:}$ 1 105 Recommended Questions $\text{constant}$, $\text{proportional to } x$... 2 Edit Delete
9873 $\text{The work done in increasing the length of a massless spring from its natural length 15 cm to 15.1 cm is 20 J. Work done in increasing the length from 15.1 cm to 15.2 cm will be:}$ 1 105 Recommended Questions $20 \text{ J}$, $40 \text{ J}$... 3 Edit Delete
9872 $\text{A vertical spring with a force constant } k \text{ is fixed on a table. A ball of mass } m \text{ at a height } h \text{ above the free upper end of the spring falls vertically on the spring so that the spring is compressed by a distance } d. \text{ The net work done in the process is:}$ 1 105 Recommended Questions $mg(h + d) + \frac{1}{2}kd^2$, $mg(h + d) - \frac{1}{2}kd^2$... 2 Edit Delete
9871 $\text{A vertical spring with a force constant } k \text{ is fixed on a table. A ball of mass } m \text{ at a height } h \text{ above the free upper end of the spring falls vertically on the spring so that the spring is compressed by a distance } d. \text{ The net work done in the process is:}$ 1 105 Recommended Questions $mg(h + d) + \frac{1}{2}kd^2$, $mg(h + d) - \frac{1}{2}kd^2$... 1 Edit Delete
9870 $\text{Two springs of spring constants } k \text{ and } 3k \text{ are stretched separately by the same force. The ratio of potential energy stored in them respectively, will be:}$ 1 105 Recommended Questions $3 : 1$, $9 : 1$... 1 Edit Delete
9869 $\text{If two springs, A and B } (K_A = 2 K_B) \text{, are stretched by the same suspended weights, then the ratio of work done in stretching is equal to:}$ 1 105 Recommended Questions $1 : 2$, $2 : 1$... 3 Edit Delete
9868 $\text{A block of mass } M \text{ moving on the frictionless horizontal surface collides with the spring of spring constant } k \text{ and compresses it by length } L. \text{ The maximum momentum of the block after the collision will be:}$ 1 105 Recommended Questions $\text{zero}$, $\frac{ML^2}{k}$... 3 Edit Delete
9867 $\text{When a spring is subjected to 4 N force, its length is a metre and if 5 N is applied, its length is b metre. If 9 N is applied, its length will be:}$ 1 105 Recommended Questions $4b - 3a$, $5b - a$... 4 Edit Delete
9866 $\text{A spring 40 mm long is stretched by the application of force. If 10 N force is required to stretch the spring through 1 mm, then work done to stretch the spring 40 mm is equal to:}$ 1 105 Recommended Questions $84 \text{ J}$, $68 \text{ J}$... 2 Edit Delete
9865 $\text{A block of mass } m \text{ initially at rest, is dropped from a height } h \text{ onto a spring of force constant } k. \text{ If the maximum compression in the spring is } x, \text{ then:}$ 1 105 Recommended Questions $mgh = \frac{1}{2}kx^2$, $mg(h + x) = \frac{1}{2}kx^2$... 4 Edit Delete
9864 $\text{Select the incorrect statement about potential energy:}$ 1 105 Recommended Questions $\text{A change in potential energy is equal to work done against the internal conservative force.}$, $\text{A change in potential energy is independent of the reference point.}$... 3 Edit Delete
9863 $\text{A bolt of mass 0.3 kg falls from the ceiling of an elevator moving down at a uniform speed of 7 m/s. It hits the floor of the elevator (length of the elevator = 3 m) and does not rebound. What is the heat produced by the impact?}$ 1 105 Recommended Questions $8.82 \text{ J}$, $7.65 \text{ J}$... 1 Edit Delete
9862 $\text{What is the work done by gravity on block A in 2 seconds after the blocks are released? (Pulley is light)}$ 1 105 Recommended Questions $240 \text{ J}$, $200 \text{ J}$... 1 Edit Delete
9861 $\text{A particle of mass 'm' is projected at an angle '} \alpha \text{' with the horizontal, with an initial velocity 'u'. The work done by gravity during the time it reaches its highest point is:}$ 1 105 Recommended Questions $u^2 \sin^2 \alpha$, $\frac{mu^2 \cos^2 \alpha}{2}$... 4 Edit Delete
9860 $\text{In the given figure, a man pulls the mass } m \text{ with the help of a rope. Work done by the man against gravity when mass is lifted by 0.5 m is: } (g = 10 \text{ m/s}^2)$ 1 105 Recommended Questions $50 \text{ J}$, $100 \text{ J}$... 1 Edit Delete
9859 $\text{The work done by a person in carrying a box of mass 10 kg to a vertical height of 10 m is 4900 J. The mass of the person is:}$ 1 105 Recommended Questions $40 \text{ kg}$, $60 \text{ kg}$... 1 Edit Delete
9858 $\text{A uniform chain of length } L \text{ and mass } M \text{ is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If } g \text{ is acceleration due to gravity, the work required to pull the hanging part on the table is:}$ 1 105 Recommended Questions $MgL$, $\frac{MgL}{3}$... 4 Edit Delete
9857 $\text{Four situations are shown in the following options. In each situation, planes are equally rough and the block begins with the same speed and slides until the kinetic frictional force has stopped it. In which of the following cases increase in thermal energy due to sliding is least?}$ 1 105 Recommended Questions $\text{Block sliding on horizontal surface}$, $\text{Block sliding down a 30° incline}$... 4 Edit Delete
9856 $\text{A body of mass 0.5 kg travels in a straight line with velocity } v = ax^{3/2} \text{ where } a = 5 \text{ m}^{-1/2} \text{s}^{-1}\text{. What is the work done by the net force during its displacement from } x = 0 \text{ to } x = 2 \text{ m?}$ 1 105 Recommended Questions $50 \text{ J}$, $45 \text{ J}$... 1 Edit Delete
9855 $\text{A bullet fired towards a wall reduces its kinetic energy by half after the penetration of 6 cm. The further penetration of the bullet into the wall is:}$ 1 105 Recommended Questions $2 \text{ cm}$, $1 \text{ cm}$... 3 Edit Delete
9854 $\text{A block of mass } m \text{ is connected to a spring of force constant } K\text{. Initially, the block is at rest and the spring is relaxed. A constant force } F \text{ is applied horizontally towards the right. The maximum speed of the block will be:}$ 1 105 Recommended Questions $\frac{F}{\sqrt{2mK}}$, $\frac{\sqrt{2}F}{\sqrt{mK}}$... 3 Edit Delete
9853 $\text{The energy required to accelerate a car from rest to 30 m/s is E. The energy required to accelerate the car from 30 m/s to 60 m/s will be:}$ 1 105 Recommended Questions $E$, $2E$... 3 Edit Delete
9852 $\text{A body of mass } m \text{ dropped from a height } h \text{ reaches the ground with a speed of } 1.4\sqrt{gh}\text{. The work done by air drag is:}$ 1 105 Recommended Questions $-0.2mgh$, $-0.02mgh$... 2 Edit Delete
9851 $\text{A block is released from rest from a height of } h = 5 \text{ m. After travelling through the smooth curved surface, it moves on the rough horizontal surface through a length } l = 8 \text{ m and climbs onto the other smooth curved surface at a height } h'\text{. If } \mu = 0.5\text{, find } h'\text{.}$ 1 105 Recommended Questions $2 \text{ m}$, $3 \text{ m}$... 3 Edit Delete
9850 $\text{A body of mass 'm' is released from the top of a fixed rough inclined plane as shown in the figure. If the frictional force has magnitude F, then the body will reach the bottom with a velocity: } (L = \sqrt{2h})$ 1 105 Recommended Questions $\sqrt{2gh}$, $\sqrt{\frac{2Fh}{m}}$... 4 Edit Delete
9849 $\text{A block is carried slowly up an inclined plane. If } W_f \text{ is work done by the friction, } W_N \text{ is work done by the reaction force, } W_g \text{ is work done by the gravitational force and } W_{ex} \text{ is the work done by an external force, then choose the correct relation(s):}$ 1 105 Recommended Questions $W_N + W_f + W_g + W_{ex} = 0$, $W_N = 0$... 4 Edit Delete
9848 $\text{A particle of mass 10 kg moves with a velocity of } 10\sqrt{x} \text{ in SI units, where } x \text{ is displacement. The work done by the net force during the displacement of the particle from } x = 4 \text{ m to } x = 9 \text{ m is:}$ 1 105 Recommended Questions $1250 \text{ J}$, $1000 \text{ J}$... 4 Edit Delete
9847 $\text{The bob of a simple pendulum having length l, is displaced from the mean position to an angular position } \theta \text{ with respect to vertical. If it is released, then the velocity of the bob at the lowest position will be:}$ 1 105 Recommended Questions $\sqrt{2gl(1 - \cos \theta)}$, $\sqrt{2gl(1 + \cos \theta)}$... 1 Edit Delete
9846 $\text{An object of mass } m = 1.5 \text{ kg is acted upon by the force as shown in the figure that varies with the position of the object as shown. If the object starts from rest at a point } x = 0, \text{ then what is its speed at } x = 50 \text{ m?}$ 1 105 Recommended Questions $20 \text{ m/s}$, $25 \text{ m/s}$... 1 Edit Delete
9845 $\text{A body of mass 1 kg is thrown upwards with a velocity of 20 ms}^{-1}. \text{It momentarily comes to rest after attaining a height of 18 m. How much energy is lost due to air friction? } (g = 10) \text{ ms}^{-2}$ 1 105 Recommended Questions $20 \text{ J}$, $30 \text{ J}$... 1 Edit Delete
9844 $\text{A body of mass 1 kg is thrown upwards with a velocity of 20 ms}^{-1}\text{. It momentarily comes to rest after attaining a height of 18 m. How much energy is lost due to air friction? (g = 10) ms}^{-2}$ 1 105 Recommended Questions $\text{20 J}$, $\text{30 J}$... 1 Edit Delete
9843 $\text{A force of 5 N making an angle } \theta \text{ with the horizontal acting on an object displaces it by 0.4 m along the horizontal direction. If the object gains kinetic energy of 1 J then the component of the force is:}$ 1 105 Recommended Questions $\text{1.5 N}$, $\text{2.5 N}$... 2 Edit Delete
9842 $\text{The relationship between the force F and the position x of a body is as shown in the figure. The work done in displacing the body from x = 1 m to x = 5 m will be:}$ 1 105 Recommended Questions $\text{30 J}$, $\text{15 J}$... 2 Edit Delete
9841 $\text{A force } \vec{F} = -k(y\hat{i} + x\hat{j}) \text{ (where k is a positive constant) acts on a particle moving in the xy-plane. Starting from the origin, the particle is taken along the positive x-axis to the point (a, 0) and then parallel to the y-axis to the point (a, a). The total work done by the force on the particle is:}$ 1 105 Recommended Questions $-2ka^2$, $2ka^2$... 3 Edit Delete
9840 $\text{When a body moves non-uniformly on a circular path:}$ 1 105 Recommended Questions $\text{no work is done by the tangential force.}$, $\text{no work is done by the centripetal force.}$... 2 Edit Delete
9839 $\text{A force } F = (20 + 10y) \text{ acts on a particle in the } y\text{-direction where } F \text{ is in Newton and } y \text{ is in meter. Work done by this force to move the particle from } y = 0 \text{ to } y = 1 \text{ m is:}$ 1 105 Recommended Questions $20 \text{ J}$, $30 \text{ J}$... 2 Edit Delete
9838 $\text{A position dependent force } F = 7 - 2x + 3x^2 \text{ N acts on a small body of mass 2 kg and displaces it from } x = 0 \text{ to } x = 5 \text{ m. The work done in joule is:}$ 1 105 Recommended Questions $70$, $270$... 4 Edit Delete
9837 $\text{The relationship between force and position is shown in the given figure (in a one-dimensional case). The work done by the force in displacing a body from } x = 1 \text{ cm to } x = 5 \text{ cm is:}$ 1 105 Recommended Questions $20 \text{ ergs}$, $60 \text{ ergs}$... 1 Edit Delete
9836 $\text{Forces acting on a particle have magnitudes of 14, 7, and 7 N and act in the direction of vectors } 6\hat{i} + 2\hat{j} + 3\hat{k}, 3\hat{i} - 2\hat{j} + 6\hat{k}, 2\hat{i} - 3\hat{j} - 6\hat{k} \text{ respectively. The forces remain constant while the particle is displaced from point } A: (2, 1, -3) \text{ to } B: (5, 1, 1). \text{ The coordinates are specified in meters. The work done equal to:}$ 1 105 Recommended Questions $75 \text{ J}$, $55 \text{ J}$... 1 Edit Delete
9835 $\text{A cord is used to vertically lower a block of mass m by a distance d at a constant downward acceleration of } \frac{g}{4}. \text{ The work done by the chord on the block will be:}$ 1 105 Recommended Questions $\frac{3}{4}mgd$, $-\frac{3}{4}mgd$... 2 Edit Delete
9834 $\text{A bicyclist comes to a skidding stop in 10 m. During this process, the force on the bicycle due to the road is 200 N is directly opposed to the motion. The work done by the cycle on the road is:}$ 1 105 Recommended Questions $+2000 \text{ J}$, $-200 \text{ J}$... 3 Edit Delete
9833 $\text{The position-time } (x-t) \text{ graph of a particle of mass 2 kg is shown in the figure. Total work done on the particle from } t = 0 \text{ to } t = 4 \text{ s is:}$ 1 105 Recommended Questions $8 \text{ J}$, $4 \text{ J}$... 3 Edit Delete
9832 $\text{The position of a particle } (x) \text{ varies with time } (t) \text{ as } x = (t - 2)^2, \text{ where } x \text{ is in meters and } t \text{ is in seconds. Calculate the work done during } t = 0 \text{ to } t = 4 \text{ s if the mass of the particle is 100 g.}$ 1 105 Recommended Questions $0.4 \text{ J}$, $0.2 \text{ J}$... 4 Edit Delete
9831 $\text{In the diagram shown, force } F \text{ acts on the free end of the string. If the weight } W \text{ moves up slowly by distance } h, \text{ then work done on the weight by the string holding it will be: (pulley and string are ideal)}$ 1 105 Recommended Questions $Fh$, $2Fh$... 2 Edit Delete
9830 $\text{A particle moves from a point } (-2\hat{i} + 5\hat{j}) \text{ to } (4\hat{j} + 3\hat{k}) \text{ when a force of } (4\hat{i} + 3\hat{j}) \text{ N is applied. How much work has been done by the force?}$ 1 105 Recommended Questions $8 \text{ J}$, $11 \text{ J}$... 3 Edit Delete
9829 $\text{A block of mass m is placed in an elevator moving down with an acceleration } \frac{g}{3}\text{. The work done by the normal reaction on the block as the elevator moves down through a height h is:}$ 1 105 Recommended Questions $\frac{-2mgh}{3}$, $\frac{-mgh}{3}$... 1 Edit Delete
9828 A person-1 stands on an elevator moving with an initial velocity of 'v' & upward acceleration 'a'. Another person-2 of the same mass m as person-1 is standing on the same elevator. The work done by the lift on the person-1 as observed by person-2 in time 't' is: 1 105 Recommended Questions $\text{m}(g) + \text{a}(vt) + \frac{1}{2}at^2$, $-\text{mg}(vt) + \frac{1}{2}at^2$... 3 Edit Delete
9827 $\text{The minimum work done in pulling up a block of wood weighing 2 kN for a length of 10 m on a smooth plane inclined at an angle of 15° with the horizontal is (given: sin15° = 0.2588):}$ 1 105 Recommended Questions $4.36 \text{ kJ}$, $5.17 \text{ kJ}$... 2 Edit Delete
9826 $\text{A person of mass 'm' ascends the stairs and goes up slowly through a height 'h'.}$ $\text{Then,}$ 1 105 Recommended Questions $\text{Work done by gravity is mgh}$, $\text{Work done by normal reaction is mgh}$... 3 Edit Delete
9825 $\text{The kinetic energy of a body is increased by 21\%. The percentage increase in the magnitude of linear momentum of the body will be:}$ 1 105 Recommended Questions $10\%$, $20\%$... 1 Edit Delete
9824 $\text{A rigid body of mass m is moving in a circle of radius r with constant speed v. The force on the body is } \frac{mv^2}{r} \text{ and is always directed towards the center. The work done by this force in moving the body over half the circumference of the circle will be:}$ 1 105 Recommended Questions $\frac{mv^2}{\pi r}$, $mv^2 \pi$... 3 Edit Delete
9823 $\text{Which of the following is not a unit of energy?}$ 1 105 Recommended Questions $\text{watt-hour}$, $\text{joule}$... 4 Edit Delete
9822 $\text{A body constrained to move along the z-axis of a coordinate system is subjected to constant force given by } \vec{F} = -\hat{i} + 2\hat{j} + 3\hat{k} \text{ where } \hat{i}, \hat{j} \text{ and } \hat{k} \text{ are unit vectors along the x-axis, y-axis and z-axis of the system respectively. The work done by this force in moving the body a distance of 4 m along the z-axis will be:}$ 1 105 Recommended Questions $15 \text{ J}$, $14 \text{ J}$... 4 Edit Delete
9821 $\text{A man pushes a wall and fails to displace it. He does:}$ 1 105 Recommended Questions $\text{negative work}$, $\text{positive but not maximum work}$... 3 Edit Delete
9820 $\text{A mass } m \text{ is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when:}$ 1 104 Recommended Questions $\text{inclined at a } 60^\circ \text{ angle from vertical}$, $\text{the mass is at the highest point}$... 4 Edit Delete
9819 $\text{A massless and inextensible string connects two blocks A and B of masses } 3m \text{ and } m, \text{ respectively. The whole system is suspended by a massless spring, as shown in the figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively:}$ 1 104 Recommended Questions $\frac{g}{3}, g$, $g, g$... 1 Edit Delete
9818 $\text{A block slides down on a } 45^\circ \text{ rough incline in thrice the time it takes to slide down on a frictionless } 45^\circ \text{ incline of the same length. The coefficient of friction between the block and the rough incline is:}$ 1 104 Recommended Questions $0.6$, $0.7$... 4 Edit Delete
9817 $\text{A simple pendulum hangs from the roof of a train moving on horizontal rails. If the string is inclined towards the front of the train, then the train is:}$ 1 104 Recommended Questions $\text{moving with constant velocity.}$, $\text{in accelerated motion.}$... 3 Edit Delete
9816 $\text{A body is moving with a velocity of } 2\hat{i} \text{ m/s. If the force acting on the body is } (2\hat{i} + 3\hat{j} + 3\hat{k}) \text{ N, then the momentum of the body is changing in:}$ 1 104 Recommended Questions $X\text{-direction only}$, $X\text{-}Y \text{ directions}$... 4 Edit Delete
9815 $\text{The angle between the position vector and the acceleration vector of a particle in non-uniform circular motion (centre of the circle is taken as the origin) will be:}$ 1 104 Recommended Questions $0°$, $45°$... 4 Edit Delete
9814 $\text{A stone of mass } m \text{ tied to the end of a string revolves in a vertical circle of radius } R. \text{ The magnitude of net forces at the lowest and highest points of the circle directed vertically downwards are:}$ $\text{(}T_1 \text{ and } v_1 \text{ denote the tension and speed at the lowest point. } T_2 \text{ and } v_2 \text{ denote corresponding values at the highest point.)}$ 1 104 Recommended Questions $\text{Lowest point: } mg - T_1, \text{ Highest point: } mg + T_2$, $\text{Lowest point: } mg + T_1, \text{ Highest point: } mg + T_2$... 1 Edit Delete
9813 $\text{The kinetic energy } K \text{ of a particle moving in a circular path varies with the distance covered } S \text{ as } K = aS^2 \text{ where } a \text{ is constant. The angle between the tangential force and the net force acting on the particle is: (}R \text{ is the radius of the circular path)}$ 1 104 Recommended Questions $\tan^{-1}\left(\frac{S}{R}\right)$, $\tan^{-1}\left(\frac{R}{S}\right)$... 1 Edit Delete
9812 $\text{A bucket full of water tied with the help of a 2 m long string performs a vertical circular motion. The minimum angular velocity of the bucket at the uppermost point so that water will not fall will be:}$ 1 104 Recommended Questions $2\sqrt{5} \text{ rad/s}$, $\sqrt{5} \text{ rad/s}$... 2 Edit Delete
9811 $\text{A particle of mass } m \text{ having speed } v \text{ goes in a vertical circular motion such that its centre is at its origin, as shown in the figure. If at any instant the angle made by the string with a negative } y\text{-axis is } \theta \text{ then the tension in the string is:}$ $\text{[Take radius = } R\text{]}$ 1 104 Recommended Questions $mg \sin \theta + \frac{mv^2}{R}$, $mg \cos \theta - \frac{mv^2}{R}$... 3 Edit Delete
9810 $\text{A point mass } m \text{ is moved in a vertical circle of radius } r \text{ with the help of a string. The velocity of the mass is } \sqrt{7gr} \text{ at the lowest point. The tension in the string at the lowest point will be:}$ 1 104 Recommended Questions $6mg$, $7mg$... 3 Edit Delete
9809 $\text{A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/s. A plumb bob is suspended from the roof of the car by a light rigid rod of length 1.00 m. The angle formed by the rod with respect to the vertical is:}$ 1 104 Recommended Questions $\text{zero}$, $30°$... 3 Edit Delete
9808 $\text{The banking angle for a curved road of radius 490 m for a vehicle moving at 35 m/s is:}$ 1 104 Recommended Questions $\tan^{-1}(0.25)$, $\tan^{-1}(0.55)$... 1 Edit Delete
9807 $\text{A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is of 45°, the speed of the car is:}$ 1 104 Recommended Questions $20 \text{ ms}^{-1}$, $30 \text{ ms}^{-1}$... 2 Edit Delete
9806 $\text{The angle of banking for a cyclist taking a turn at a curve is given by } \tan \theta = \frac{v^n}{rg} \text{ where symbols have their usual meaning. The value of } n \text{ is:}$ 1 104 Recommended Questions $1$, $2$... 2 Edit Delete
9805 $\text{One end of the string of length } l \text{ is connected to a particle of mass } m \text{ and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in a circle with speed } v\text{, the net force on the particle (directed towards the centre) will be: (}T \text{ represents the tension in the string)}$ 1 104 Recommended Questions $T$, $T + \frac{mv^2}{l}$... 1 Edit Delete
9804 $\text{A motorcycle is going on an overbridge of radius } R\text{. The driver maintains a constant speed. The normal force on the motorcycle as it ascends the overbridge will be:}$ 1 104 Recommended Questions $\text{increases}$, $\text{decreases}$... 1 Edit Delete
9803 $\text{A tube of length } L \text{ is filled completely with an incompressible liquid of mass } M \text{ and closed at both ends. The tube is then rotated in a horizontal plane about one of its ends with a uniform angular velocity } \omega\text{. The force exerted by the liquid at the other end is:}$ 1 104 Recommended Questions $\frac{ML\omega^2}{2}$, $\frac{ML^2\omega}{2}$... 1 Edit Delete
9802 $\text{A point mass } m \text{ is suspended from a light thread of length } l\text{, fixed at } O\text{, and is whirled in a horizontal circle at a constant speed as shown. From your point of view, stationary with respect to the mass, the forces on the mass are:}$ 1 104 Recommended Questions $\text{Tension } T \text{ (upward and leftward), centrifugal force } F \text{ (leftward), and weight } W \text{ (downward)}$, $\text{Tension } T \text{ (upward and leftward) and weight } W \text{ (downward)}$... 3 Edit Delete
9801 $\text{A block of mass 10 kg is in contact with the inner wall of a hollow cylindrical drum of radius 1 m. The coefficient of friction between the block and the inner wall of the cylinder is 0.1. The minimum angular velocity needed for the cylinder, which is vertical and rotating about its axis, will be:}$ $(g = 10 \text{ m/s}^2)$ 1 104 Recommended Questions $10\pi \text{ rad/s}$, $\sqrt{10\pi} \text{ rad/s}$... 4 Edit Delete
9800 $\text{Two stones of masses } m \text{ and } 2m \text{ are whirled in horizontal circles, the heavier one in a radius } \frac{r}{2} \text{ and the lighter one in the radius } r\text{. The tangential speed of lighter stone is } n \text{ times that of heavier stone when they experience the same centripetal forces. The value of } n \text{ is:}$ 1 104 Recommended Questions $2$, $3$... 1 Edit Delete
9799 $\text{A body of mass } m \text{ is moving on a concave bridge } ABC \text{ of the radius of curvature } R \text{ at a speed } v. \text{ The normal reaction of the bridge on the body at the instant it is at the lowest point of the bridge is:}$ 1 104 Recommended Questions $mg - \frac{mv^2}{R}$, $mg + \frac{mv^2}{R}$... 2 Edit Delete
9798 $\text{A coin placed on a rotating table just slips if it is placed at a distance } 4r \text{ from the center. On doubling the angular velocity of the table, the coin will just slip when the distance from the centre is equal to:}$ 1 104 Recommended Questions $4r$, $2r$... 3 Edit Delete
9797 $\text{Two masses, } M \text{ and } m, \text{ are attached to a vertical axis by weightless threads of combined length } l. \text{ They are set in rotational motion in a horizontal plane about this axis with constant angular velocity } \omega. \text{ If the tensions in the threads are the same during motion, the distance of } M \text{ from the axis is:}$ 1 104 Recommended Questions $\frac{Ml}{M+m}$, $\frac{ml}{M+m}$... 2 Edit Delete
9796 $\text{A roller coaster is designed such that riders experience "weightlessness" as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between:}$ 1 104 Recommended Questions $14 \text{ m/s and } 15 \text{ m/s}$, $15 \text{ m/s and } 16 \text{ m/s}$... 1 Edit Delete
9795 $\text{A ball of mass } 0.1 \text{ kg is whirled in a horizontal circle of radius } 1 \text{ m by means of a string at an initial speed of } 10 \text{ rpm. Keeping the radius constant, the tension in the string is reduced to one quarter of its initial value. The new speed is:}$ 1 104 Recommended Questions $5 \text{ rpm}$, $10 \text{ rpm}$... 1 Edit Delete
9794 $\text{A massless string of length } 1 \text{ m fixed at one end carries a mass of } 2 \text{ kg at the other end. The string makes } \frac{2}{\pi} \text{ rev/s around the axis through the fixed end as shown in the figure. The tension on the string will be:}$ 1 104 Recommended Questions $32 \text{ N}$, $3 \text{ N}$... 1 Edit Delete
9793 $\text{A } 10 \text{ kg block is kept on a horizontal turntable that rotates at an angular velocity of } 2 \text{ rad/s. If the distance of the block from the center of the table is } 0.5 \text{ m, the net force on the block is:}$ 1 104 Recommended Questions $40 \text{ N}$, $20 \text{ N}$... 2 Edit Delete
9792 $\text{The maximum constant speed with which a car can move on a flat horizontal circular road with the radius of curvature } 20 \text{ m and a coefficient of static friction } 0.5 \text{ is: } (g = 10 \text{ m/s}^2)$ 1 104 Recommended Questions $36 \text{ km/h}$, $54 \text{ km/h}$... 1 Edit Delete
9791 $\text{A small coin is kept at a distance } r \text{ from the centre of a gramophone disc rotating at an angular speed } \omega\text{. The minimum coefficient of friction for which a coin will not slip is:}$ 1 104 Recommended Questions $\frac{r\omega^2}{g}$, $\frac{g}{r\omega^2}$... 1 Edit Delete
9790 $\text{A particle of mass } m \text{ is suspended from a ceiling through a massless string. The particle moves in a horizontal circle as shown in the given figure. The tension in the string is:}$ 1 104 Recommended Questions $mg$, $2mg$... 2 Edit Delete
9789 $\text{A car of mass } m \text{ is moving on a level circular track of radius } R. \text{ If } \mu_s \text{ represent the static friction between the road and tyres of the car, then the maximum speed of the car in circular motion is given by:}$ 1 104 Recommended Questions $\sqrt{\mu_s m R g}$, $\sqrt{\frac{Rg}{\mu_s}}$... 4 Edit Delete
9788 $\text{Two plates of the same mass are attached rigidly to the two ends of a spring. One of the plates rests on a horizontal surface, and the other results in compression } X \text{ of the spring when it is in steady-state. If an external force is applied to the upper plate to just lift off the lowest plate, what further compression in the spring is required?}$ 1 104 Recommended Questions $0.5X$, $3X$... 3 Edit Delete
9787 $\text{The reading of spring balance in the depicted figure will be:}$ 1 104 Recommended Questions $0 \text{ N}$, $20 \text{ N}$... 3 Edit Delete
9786 $\text{If the system shown in the figure is in equilibrium, then the reading of spring balance (in kgf) is:}$ 1 104 Recommended Questions $10$, $20$... 1 Edit Delete
9785 $\text{The length of a spring is } l_1 \text{ and } l_2 \text{ when stretched with a force of 4 N and 5 N respectively. Its natural length is?}$ 1 104 Recommended Questions $l_2 + l_1$, $2(l_2 - l_1)$... 3 Edit Delete
9784 $\text{Three blocks each of mass } m \text{ are hanged vertically with the help of inextensible strings and ideal springs. Initially, the system was in equilibrium. If at any instant, the lowermost string is cut, then the acceleration of block B just after cutting the string will be:}$ 1 104 Recommended Questions $g$, $\frac{g}{2}$... 1 Edit Delete
9783 $\text{Calculate the reading of the spring balance shown in the figure: (take } g = 10 \text{ m/s}^2\text{)}$ $\text{The system shows a 10 kg mass on a 30° inclined plane connected via a pulley to a 5 kg hanging mass, with the entire system accelerating upward at 2 m/s}^2$ 1 104 Recommended Questions $60 \text{ N}$, $40 \text{ N}$... 1 Edit Delete
9782 $\text{A massless and inextensible string connects two blocks A and B of masses } 3m \text{ and } m\text{, respectively. The whole system is suspended by a massless spring, as shown in the figure. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively:}$ 1 104 Recommended Questions $\frac{g}{3}, g$, $g, g$... 1 Edit Delete
9781 $\text{Three blocks } A, B \text{ and } C \text{ of mass } 3M, 2M \text{ and } M \text{ respectively are suspended vertically with the help of springs } PQ \text{ and } TU \text{ and a string } RS \text{ as shown in Figure. The acceleration of blocks } A, B \text{ and } C \text{ are } a_1, a_2 \text{ and } a_3 \text{ respectively. The value of acceleration } a_1 \text{ at the moment string } RS \text{ is cut will be:}$ 1 104 Recommended Questions $g \text{ downward}$, $g \text{ upward}$... 2 Edit Delete
9780 $\text{Two blocks, A and B, of masses } 2m \text{ and } 4m \text{ are connected by a string. The block of mass } 4m \text{ is connected by a spring (massless). The string is suddenly cut. The ratio of the magnitudes of accelerations of masses } 2m \text{ and } 4m \text{ at that instant will be:}$ 1 104 Recommended Questions $1 : 2$, $2 : 1$... 2 Edit Delete
9779 $\text{Two masses, A and B, each of mass } M \text{ are fixed together by a massless spring. A force acts on the mass B as shown in the figure. If the mass B starts moving away from mass A with acceleration } a \text{ in the ground frame, then the acceleration of mass A will be:}$ 1 104 Recommended Questions $\frac{Ma - F}{M}$, $\frac{MF}{F + Ma}$... 4 Edit Delete
9778 $\text{An engine pumps liquid of density d continuously through a pipe of cross-sectional area A. If the speed with which liquid passes through the pipe is v, then the rate at which kinetic energy is being imparted to the liquid by the pump is:}$ 1 104 Recommended Questions $Adv^2$, $\frac{1}{2}Adv^2$... 1 Edit Delete
9777 $\text{As shown in the figure, two masses of } 10 \text{ kg and } 20 \text{ kg, respectively are connected by a massless spring. A force of } 200 \text{ N acts on the } 20 \text{ kg mass. At the instant shown, the } 10 \text{ kg mass has an acceleration of } 12 \text{ m/s}^2 \text{ towards the right. The acceleration of } 20 \text{ kg mass at this instant is:}$ 1 104 Recommended Questions $12 \text{ m/s}^2$, $4 \text{ m/s}^2$... 2 Edit Delete
9776 $\text{A block of mass } 1 \text{ kg lying on the floor is subjected to a horizontal force given by, } F = 2 \sin \omega t \text{ newtons. The coefficient of friction between the block and the floor is } 0.25. \text{ The acceleration of the block will be:}$ 1 104 Recommended Questions $\text{positive and uniform}$, $\text{positive and non-uniform}$... 3 Edit Delete
9775 $\text{A block } B \text{ is placed on top of block } A. \text{ The mass of block } B \text{ is less than the mass of block } A. \text{ Friction exists between the blocks, whereas the ground on which block } A \text{ is placed is assumed to be smooth. A horizontal force } F, \text{ increasing linearly with time begins to act on } B. \text{ The acceleration } a_A \text{ and } a_B \text{ of blocks } A \text{ and } B \text{ respectively are plotted against } t. \text{ The correctly plotted graph is:}$ 1 104 Recommended Questions $\text{Graph 1: } a_B \text{ starts above } a_A \text{ and both increase linearly with } a_B > a_A$, $\text{Graph 2: } a_B \text{ and } a_A \text{ both start from origin and increase linearly with } a_B > a_A$... 4 Edit Delete
9774 $\text{A block is placed on a rough horizontal plane. A time dependent horizontal force, } F = kt, \text{ acts on the block. The acceleration time graph of the block is:}$ 1 104 Recommended Questions $\text{Graph 1: Exponential increase in acceleration with time}$, $\text{Graph 2: Zero acceleration initially, then linear increase}$... 2 Edit Delete
9773 $\text{An object of mass } m \text{ is held against a vertical wall by applying horizontal force } F \text{ as shown in the figure. The minimum value of the force } F \text{ will be: (Consider friction between wall and object.)}$ 1 104 Recommended Questions $\text{Less than } mg$, $\text{Equal to } mg$... 3 Edit Delete
9772 $\text{The block of mass } m \text{ (shown in the figure) does not move on applying the inclined force } F. \text{ The friction force acting on the block is:}$ 1 104 Recommended Questions $F \cos \theta$, $F \sin \theta$... 1 Edit Delete
9771 $\text{The friction between the front foot and the back foot when walking on a horizontal surface is, respectively:}$ 1 104 Recommended Questions $\text{Forward, forward}$, $\text{Backward, backward}$... 4 Edit Delete
9770 $\text{A 40 kg slab rests on a frictionless floor. A 10 kg block rests on top of the slab. The static coefficient of friction between the block and the slab is 0.60, while the kinetic coefficient of friction is 0.40. The 10 kg block is acted upon by a horizontal force of 100 N. If } g = 10 \text{ m/s}^2\text{, the resulting acceleration of the slab will be:}$ 1 104 Recommended Questions $1.0 \text{ m/s}^2$, $1.47 \text{ m/s}^2$... 1 Edit Delete
9769 $\text{Two blocks of masses 2 kg and 3 kg placed on a horizontal surface are connected by a massless string. If 3 kg is pulled by 10 N as shown in the figure, then the force of friction acting on the 2 kg block will be:}$ $\text{(Take } g = 10 \text{ m/s}^2\text{)}$ 1 104 Recommended Questions $6 \text{ N}$, $4 \text{ N}$... 2 Edit Delete
9768 $\text{If } \mu \text{ between block A and inclined plane is 0.5 and that between block B and the inclined plane is 0.8, then the normal reaction between blocks A and B will be:}$ 1 104 Recommended Questions $180 \text{ N}$, $216 \text{ N}$... 3 Edit Delete
9767 $\text{A heavy uniform chain partly lies on a horizontal table. If the coefficient of friction between the chain and the table surface is 0.25, then the maximum fraction of the length of the chain that can hang over the edge of the table will be:}$ 1 104 Recommended Questions $20\%$, $25\%$... 1 Edit Delete
9766 $\text{A conveyor belt is moving at a constant speed of 2 m/s. A box is gently dropped on it. The coefficient of friction between them is } \mu = 0.5\text{. The distance that the box will move relative to the belt before coming to rest on it, taking } g = 10 \text{ ms}^{-2} \text{ is:}$ 1 104 Recommended Questions $0.4 \text{ m}$, $1.2 \text{ m}$... 1 Edit Delete
9765 $\text{On the horizontal surface of a truck, a block of mass 1 kg is placed (} \mu = 0.6 \text{) and the truck is moving with an acceleration of } 5 \text{ m/s}^2\text{. The frictional force on the block will be:}$ 1 104 Recommended Questions $5 \text{ N}$, $6 \text{ N}$... 1 Edit Delete
9764 $\text{The upper half of an inclined plane of inclination } \theta \text{ is perfectly smooth while the lower half is rough. A block starting from rest at the top of the plane will again come to rest at the bottom if the coefficient of friction between the block and the lower half of the plane is given by:}$ 1 104 Recommended Questions $\mu = 2/\tan \theta$, $\mu = 2 \tan \theta$... 2 Edit Delete
9763 $\text{Block A has a mass of 10 kg. Between block A and the table, the coefficient of static friction is 0.2, and the coefficient of kinetic friction is also 0.2. The required mass of B to start the motion will be:}$ 1 104 Recommended Questions $2 \text{ kg}$, $2.2 \text{ kg}$... 1 Edit Delete
9762 $\text{A body of mass } m \text{ is kept on a rough horizontal surface (coefficient of friction = } \mu \text{). A horizontal force is applied to the body, but it does not move. The resultant of normal reaction and the frictional force acting on the object is given by } \vec{F} \text{ where:}$ 1 104 Recommended Questions $|\vec{F}| = mg + \mu mg$, $|\vec{F}| = \mu mg$... 3 Edit Delete
9761 $\text{A plank with a box on it at one end is gradually raised at the other end. As the angle of inclination with the horizontal reaches } 30°, \text{ the box starts to slip and slides } 4.0 \text{ m down the plank in } 4.0 \text{ s. The coefficients of static and kinetic friction between the box and the plank, respectively, will be:}$ 1 104 Recommended Questions $0.6 \text{ and } 0.6$, $0.6 \text{ and } 0.5$... 2 Edit Delete
9760 $\text{A uniform chain of length } L \text{ hangs partly from a table which is kept in equilibrium by friction. If the maximum length that can be supported without slipping is } l, \text{ then the coefficient of friction between the table and the chain is:}$ 1 104 Recommended Questions $\frac{l}{L}$, $\frac{l}{L+l}$... 3 Edit Delete
9759 $\text{A block of mass } m \text{ lying on a rough horizontal plane is acted upon by a horizontal force } P \text{ and another force } Q \text{ inclined at an angle } \theta \text{ to the vertical. The block will remain in equilibrium if the coefficient of friction between it and the surface is:}$ 1 104 Recommended Questions $\frac{(P+Q\sin\theta)}{(mg+Q\cos\theta)}$, $\frac{(P\cos\theta+Q)}{(mg-Q\sin\theta)}$... 1 Edit Delete
9758 $\text{A block } B \text{ is pushed momentarily along a horizontal surface with an initial velocity } v. \text{ If } \mu \text{ is the coefficient of sliding friction between } B \text{ and the surface, the block } B \text{ will come to rest after a time:}$ 1 104 Recommended Questions $\frac{v}{g\mu}$, $\frac{g\mu}{v}$... 1 Edit Delete
9757 $\text{A block of mass } m \text{ is in contact with the cart } (C) \text{ as shown in the figure. The coefficient of static friction between the block and the cart is } \mu. \text{ The acceleration } a \text{ of the cart that will prevent the block from falling satisfies:}$ 1 104 Recommended Questions $a > \frac{mg}{\mu}$, $a > \frac{g}{\mu m}$... 3 Edit Delete
9756 $\text{Two masses, } A \text{ and } B\text{, of mass 4 kg and 1 kg, respectively, are connected with the help of a massless inextensible string. Mass } A \text{ is placed on a rough horizontal table, and mass } B \text{ is suspended with the help of a string passing through a smooth hole at the centre of the table. For the system to be in equilibrium, what should be the minimum value of the coefficient of friction?}$ 1 104 Recommended Questions $0.5$, $0.25$... 2 Edit Delete
9755 $\text{A system consists of three masses } m_1\text{, } m_2\text{, and } m_3 \text{ connected by a string passing over a pulley P. The mass } m_1 \text{ hangs freely, and } m_2 \text{ and } m_3 \text{ are on a rough horizontal table (the coefficient of friction } = \mu\text{.) The pulley is frictionless and of negligible mass. The downward acceleration of mass } m_1 \text{ is:}$ $\text{(Assume } m_1 = m_2 = m_3 = m \text{ and } g \text{ is the acceleration due to gravity.)}$ 1 104 Recommended Questions $\frac{g(1-g\mu)}{9}$, $\frac{2g\mu}{3}$... 3 Edit Delete
9754 $\text{A rigid rod is placed against the wall as shown in the figure. When the velocity at its lower end is } 10 \text{ ms}^{-1} \text{ and its base makes an angle } \alpha = 60^\circ \text{ with horizontal, then the vertical velocity of its end B (in ms}^{-1}\text{) will be:}$ 1 104 Recommended Questions $10\sqrt{3}$, $\frac{10}{\sqrt{3}}$... 2 Edit Delete
9753 $\text{If the block is being pulled by the rope moving at speed } v \text{ as shown, then the horizontal velocity of the block is:}$ 1 104 Recommended Questions $v$, $v \cos \theta$... 4 Edit Delete
9752 $\text{The figure shows a rod of length 5 m. Its ends, } A \text{ and } B\text{, are restrained to moving in horizontal and vertical guides. When the end } A \text{ is 3 m above } O\text{, it moves at 4 m/s. The velocity of end } B \text{ at that instant is:}$ 1 104 Recommended Questions $2 \text{ m/s}$, $3 \text{ m/s}$... 2 Edit Delete
9751 $\text{What is the velocity of the block when the angle between the string and the horizontal is } 30^\circ \text{ as shown in the diagram?}$ 1 104 Recommended Questions $v_B = v_P$, $v_B = \frac{v_P}{\sqrt{3}}$... 4 Edit Delete
9750 $\text{A block of mass } M \text{ is pulled by a force } F\text{, making an angle } \theta \text{ with the horizontal on a smooth horizontal surface as shown. If } a \text{ is the acceleration of block on the surface, then the contact force between the block and the surface will be:}$ 1 104 Recommended Questions $Mg + Ma \cos \theta$, $Mg - Ma \cos \theta$... 4 Edit Delete
9749 $\text{A lift is going up. The total mass of lift and the passenger is 1500 kg. The variation in the speed of the lift is as given in the graph. The tension in the rope pulling the lift at } t = 11^{\text{th}} \text{ s will be:}$ 1 104 Recommended Questions $17400 \text{ N}$, $14700 \text{ N}$... 3 Edit Delete
9748 $\text{Two masses, } m \text{ and } M\text{, are connected by a light string passing over a smooth pulley. When mass } m \text{ moves up by 1.4 m in 2 sec, the ratio } \frac{m}{M} \text{ is:}$ 1 104 Recommended Questions $\frac{13}{15}$, $\frac{15}{13}$... 1 Edit Delete
9747 $\text{When a 5 kg plastic box is placed deep inside the water, it accelerates up at a rate of } \frac{g}{6}\text{. How much sand should be put inside the box so that it may accelerate down at the rate of } \frac{g}{6}\text{?}$ 1 104 Recommended Questions $2 \text{ kg}$, $3 \text{ kg}$... 1 Edit Delete
9746 $\text{A block } B \text{ of mass 3 kg is kept on block } A \text{ of mass 5 kg in a lift accelerating upward with an acceleration of } g\text{. The reaction by } A \text{ on } B \text{ is:}$ 1 104 Recommended Questions $10g$, $16g$... 4 Edit Delete
9745 $\text{A string tied on a roof bears a maximum tension of 50 kg-wt. The minimum acceleration that can be acquired by a man of 98 kg to descend will be:}$ $\text{[Take } g = 9.8 \text{ m/s}^2\text{]}$ 1 104 Recommended Questions $9.8 \text{ m/s}^2$, $4.9 \text{ m/s}^2$... 3 Edit Delete
9744 $\text{A 5 m long uniformly thick string rests on a horizontal frictionless surface. It is pulled by a horizontal force of 5 N from one end. The tension in the string at 1 m from the end where the force is applied is:}$ 1 104 Recommended Questions $\text{zero}$, $5\text{ N}$... 3 Edit Delete
9743 $\text{Three identical masses, each of mass 4 kg, are connected by massless inextensible strings. The string joining } A \text{ and } B \text{ passes over a massless frictionless pulley as shown in the figure. The tension in the string connecting mass } B \text{ and } C \text{ is:}$ 1 104 Recommended Questions $40\text{ N}$, $20\text{ N}$... 3 Edit Delete
9742 $\text{In the given figure, spring balance is massless, so the reading of spring balance will be:}$ 1 104 Recommended Questions $2\text{ kg}$, $3.5\text{ kg}$... 3 Edit Delete
9741 $\text{Two masses, } M \text{ and } m\text{, are connected by a weightless string. They are pulled by a force on a frictionless horizontal surface. The tension in the string will be:}$ 1 104 Recommended Questions $\frac{F(M+2m)}{m+M}$, $\frac{F}{m+M}$... 1 Edit Delete
9740 $\text{The strings and pulleys shown in the figure are massless. The reading shown by the light spring balance } S \text{ is:}$ 1 104 Recommended Questions $2.4 \text{ kg}$, $5 \text{ kg}$... 1 Edit Delete
9739 $\text{A small ball is suspended from a thread. If it is lifted up with an acceleration of } 4.9 \text{ ms}^{-2} \text{ and lowered with an acceleration of } 4.9 \text{ ms}^{-2}\text{, then the ratio of the tension in the thread in both cases will be:}$ 1 104 Recommended Questions $1 : 3$, $3 : 1$... 2 Edit Delete
9738 $\text{If a young man of mass } 60 \text{ kg stands on the floor of a lift which is accelerating downwards at } 1 \text{ m/s}^2\text{, then the reaction of the floor of the lift on the man will be: } (g = 9.8 \text{ m/s}^2)$ 1 104 Recommended Questions $528 \text{ N}$, $540 \text{ N}$... 1 Edit Delete
9737 $\text{A monkey weighing } 20 \text{ kg is holding a vertical rope. The rope will not break when a mass of } 25 \text{ kg is suspended from it but will break if the mass exceeds } 25 \text{ kg. What is the maximum acceleration with which the monkey can climb up the rope? } (g = 10 \text{ m/s}^2)$ 1 104 Recommended Questions $5 \text{ m/s}^2$, $10 \text{ m/s}^2$... 4 Edit Delete
9736 $\text{Three blocks A, B, and C of masses } 4 \text{ kg, } 2 \text{ kg, and } 1 \text{ kg respectively, are in contact on a frictionless surface, as shown. If a force of } 14 \text{ N is applied to the } 4 \text{ kg block, then the contact force between A and B is:}$ 1 104 Recommended Questions $2 \text{ N}$, $6 \text{ N}$... 2 Edit Delete
9735 $\text{Two bodies of mass, 4 kg and 6 kg, are tied to the ends of a massless string. The string passes over a pulley, which is frictionless (see figure). The acceleration of the system in terms of acceleration due to gravity } (g) \text{ is:}$ 1 104 Recommended Questions $\frac{g}{2}$, $\frac{g}{5}$... 2 Edit Delete
9734 $\text{A block A of mass 7 kg is placed on a frictionless table. A thread tied to it passes over a frictionless pulley and carries a body B of mass 3 kg at the other end. The acceleration of the system will be: (given } g = 10 \text{ m/s}^2\text{)}$ 1 104 Recommended Questions $100 \text{ ms}^{-2}$, $3 \text{ ms}^{-2}$... 2 Edit Delete
9733 $\text{Two masses 8 kg and 12 kg are connected at the two ends of a light inextensible string that goes over a frictionless pulley. The acceleration of the masses and the tension in the string when the masses are released are:}$ 1 104 Recommended Questions $2 \text{ ms}^{-2}, 69 \text{ N}$, $1 \text{ ms}^{-2}, 69 \text{ N}$... 3 Edit Delete
9732 $\text{At a wall, } N \text{ bullets, each of mass } m\text{, are fired with a velocity } v \text{ at the rate of } n \text{ bullets/sec upon the wall. The bullets are stopped by the wall. The reaction offered by the wall to the bullets is:}$ 1 104 Recommended Questions $\frac{Nmv}{n}$, $nNmv$... 4 Edit Delete
9731 $\text{A mass of 4 kg is suspended as shown in the figure with the help of massless inextensible string } A\text{. Another identical string, } B\text{, is connected at the lower end of the block. When a sudden pulling downward jerk slightly greater than the breaking strength of } A \text{ and } B \text{ is given to string } B\text{, then:}$ 1 104 Recommended Questions $\text{String } A \text{ will break.}$, $\text{String } B \text{ will break.}$... 2 Edit Delete
9730 $\text{A particle is on a smooth horizontal plane. A force } F \text{ is applied, whose } (F-t) \text{ graph is given.}$ $\text{Consider the following statements:}$ $\text{(a) At time } t_1\text{, acceleration is constant.}$ $\text{(b) Initially the particle must be at rest.}$ $\text{(c) At time } t_2\text{, acceleration is constant.}$ $\text{(d) The initial acceleration is zero.}$ $\text{Select the correct statement(s):}$ 1 104 Recommended Questions $\text{(a), (c)}$, $\text{(a), (b), (d)}$... 3 Edit Delete
9729 $\text{Sand is being dropped on a conveyor belt at a rate of } M \text{ kg/s. The force necessary to keep the belt moving with at a constant velocity of } v \text{ m/s will be:}$ 1 104 Recommended Questions $Mv \text{ newton}$, $2Mv \text{ newton}$... 1 Edit Delete
9728 $\text{A parachutist falls downward with an acceleration of } 2 \text{ m/s}^2 \text{ at a height of } 200 \text{ m from the ground. Calculate the upthrust of air if the mass of the parachutist is } 60 \text{ kg: (assume } g = 10 \text{ m/s}^2\text{)}$ 1 104 Recommended Questions $480 \text{ N}$, $620 \text{ N}$... 1 Edit Delete
9727 $\text{A particle moves in the } XY\text{-plane under the action of a force } F \text{ such that the components of its linear momentum } p \text{ at any time } t \text{ are } p_x = 2\cos t, p_y = 2\sin t. \text{ The angle between } F \text{ and } p \text{ at time } t \text{ will be:}$ 1 104 Recommended Questions $90°$, $0°$... 1 Edit Delete
9726 $\text{If the force acting on a system is zero, the quantity which remains constant is:}$ 1 104 Recommended Questions $\text{Force}$, $\text{Linear momentum}$... 2 Edit Delete
9725 $\text{A 0.5 kg body experiences a force } F = (2 + 3x^2) \text{ N, where } x \text{ in metres is the displacement from the origin. If it is released to move along the } X\text{-axis from the origin, then its initial acceleration is:}$ 1 104 Recommended Questions $2 \text{ m/s}^2$, $10 \text{ m/s}^2$... 3 Edit Delete
9724 $\text{The variation of momentum with the time of one of the bodies in a two-body collision is shown in fig. The instantaneous force is the maximum corresponding to the point:}$ 1 104 Recommended Questions $P$, $Q$... 3 Edit Delete
9723 $\text{A rigid ball of mass } M \text{ strikes a rigid wall at } 60^\circ \text{ and gets reflected without loss of speed, as shown in the figure. The value of the impulse imparted by the wall on the ball will be:}$ 1 104 Recommended Questions $Mv$, $2Mv$... 1 Edit Delete
9722 $\text{An object of mass 3 kg is at rest. Now if a force of } \vec{F} = 6t^2\hat{i} + 4t\hat{j} \text{ is applied to the object, then the velocity of the object at } t = 3 \text{ second will be:}$ 1 104 Recommended Questions $18\hat{i} + 3\hat{j}$, $18\hat{i} + 6\hat{j}$... 2 Edit Delete
9721 $\text{A 100 kg gun fires a ball of 1 kg horizontally from a cliff at a height of 500 m. It falls on the ground at a distance of 400 m from the bottom of the cliff. The recoil velocity of the gun is: (Take } g = 10 \text{ m/s}^2\text{)}$ 1 104 Recommended Questions $0.2 \text{ m/s}$, $0.4 \text{ m/s}$... 2 Edit Delete
9720 $\text{An impulse of } 6m\hat{j} \text{ is applied to a body of mass m moving with velocity } \hat{i} + 2\hat{j}\text{. The final velocity of the body will be:}$ 1 104 Recommended Questions $-\hat{i} + 8\hat{j}$, $\hat{i} - 8\hat{j}$... 3 Edit Delete
9719 $\text{Two masses, } m_1 \text{ and } m_2 \text{ are experiencing the same force where } m_1 < m_2\text{. The ratio of their acceleration } \frac{a_1}{a_2} \text{ is:}$ 1 104 Recommended Questions $1$, $\text{less than 1}$... 3 Edit Delete
9718 $\text{On the application of an impulsive force, a sphere of mass 500 grams starts moving with an acceleration of } 10 \text{ m/s}^2\text{. The force acts on it for } 0.5 \text{ s. The gain in the momentum of the sphere will be:}$ 1 104 Recommended Questions $2.5 \text{ kg-m/s}$, $5 \text{ kg-m/s}$... 1 Edit Delete
9717 $\text{The force F acting on a particle of mass m is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from 0 to 8 s is:}$ 1 104 Recommended Questions $24 \text{ N-s}$, $20 \text{ N-s}$... 3 Edit Delete
9716 $\text{A body of mass 5 kg is acted upon by two perpendicular forces, 8 N and 6 N. The magnitude of the acceleration of the body is:}$ 1 104 Recommended Questions $0.99 \text{ ms}^{-2}$, $3 \text{ ms}^{-2}$... 3 Edit Delete
9715 $\text{If two forces } (6\hat{i} + 8\hat{j}) \text{ and } (4\hat{i} + 4\hat{j}) \text{ N are acting on a body of mass 2 kg, then the acceleration produced in the body (in m/s}^2\text{) will be:}$ 1 104 Recommended Questions $(5\hat{i} + 6\hat{j})$, $(10\hat{i} + 12\hat{j})$... 1 Edit Delete
9714 $\text{Choose the incorrect alternative:}$ 1 104 Recommended Questions $\text{Newton's first law is the law of inertia.}$, $\text{Newton's first law states that if the net force on a system is zero, the acceleration of any particle of the system is not zero.}$... 2 Edit Delete
9713 $\text{In the diagram, a 100 kg block is moving up with constant velocity. Find out the tension at the point } P.$ 1 104 Recommended Questions $1330 \text{ N}$, $490 \text{ N}$... 3 Edit Delete
9712 $\text{A man of mass } m \text{ stands on a crate of mass } M. \text{ He pulls on a light rope, passing over a smooth light pulley. The other end of the rope is attached to the crate. For the system to be in equilibrium, the force exerted by the man on the rope will be:}$ 1 104 Recommended Questions $mg$, $Mg$... 3 Edit Delete
9711 $\text{A particle moves from a point } (-2\hat{i} + 5\hat{j}) \text{ to } (4\hat{j} + 3\hat{k}) \text{ when a force of } (4\hat{i} + 3\hat{j}) \text{ N is applied. How much work has been done by the force?}$ 1 104 Recommended Questions $8 \text{ J}$, $11 \text{ J}$... 3 Edit Delete
9710 $\text{A string of negligible mass going over a clamped pulley of mass } m \text{ supports a block of mass } M \text{ as shown in the figure. The force on the pulley by the clamp is given by:}$ 1 104 Recommended Questions $\sqrt{2Mg}$, $\sqrt{2mg}$... 4 Edit Delete
9709 $\text{A man of mass 60 kg is standing on the ground and holding a string passing over a system of ideal pulleys. A mass of 10 kg is hanging over a light pulley such that the system is in equilibrium. The force exerted by the ground on the man is: (}g = \text{acceleration due to gravity)}$ 1 104 Recommended Questions $20g$, $45g$... 3 Edit Delete
9708 $\text{A metal sphere is suspended from a wall by a string. The forces acting on the sphere are shown in the figure. Which of the following statements is NOT correct?}$ 1 104 Recommended Questions $\vec{N} + \vec{T} + \vec{W} = 0$, $T^2 = N^2 + W^2$... 3 Edit Delete
9707 $\text{A mass } M \text{ of 100 kg is suspended with the use of strings } A, B \text{ and } C \text{ as shown in the figure. The tension in the string } B \text{ will be:}$ 1 104 Recommended Questions $100g \text{ N}$, $\text{zero}$... 1 Edit Delete
9706 $\text{Three blocks with masses of } m, 2m, \text{ and } 3m \text{ are connected by strings as shown in the figure. After an upward force } F \text{ is applied on block } m, \text{ the masses move upward at a constant speed, } v. \text{ What is the net force on the block of mass } 2m? \text{ (}g \text{ is the acceleration due to gravity).}$ 1 104 Recommended Questions $2mg$, $3mg$... 4 Edit Delete
9705 $\text{In the shown system, each of the blocks is at rest. The value of } \theta \text{ is:}$ 1 104 Recommended Questions $\tan^{-1}(1)$, $\tan^{-1}\left(\frac{3}{4}\right)$... 3 Edit Delete
9704 $\text{A body of mass 5 kg is suspended by the strings making angles } 60^\circ \text{ and } 30^\circ \text{ with the horizontal. Then, choose the correct option from the given ones:}$ $\text{(A) } T_1 = 25 \text{ N}$ $\text{(B) } T_2 = 25 \text{ N}$ $\text{(C) } T_1 = 25\sqrt{3} \text{ N}$ $\text{(D) } T_2 = 25\sqrt{3} \text{ N}$ 1 104 Recommended Questions $\text{(A), (B), and (C) only}$, $\text{(A) and (B) only}$... 3 Edit Delete
9703 $\text{The pulleys and strings shown in the figure are smooth and of negligible mass. For the system to remain in equilibrium, the angle } \theta \text{ should be:}$ 1 104 Recommended Questions $0^\circ$, $30^\circ$... 3 Edit Delete
9702 $\text{Fundamentally, the normal force between two surfaces in contact is:}$ 1 104 Recommended Questions $\text{Electromagnetic}$, $\text{Gravitational}$... 1 Edit Delete
9701 $\text{A steam boat goes across a lake and comes back (a) On a quiet day when the water is still and (b) On a rough day when there is a uniform air current so as to help the journey onward and to impede the journey back. If the speed of the launch on both the days was the same, in which case will the steam boat complete the journey in lesser time:}$ 1 103 Recommended Questions $\text{Case (a)}$, $\text{Case (b)}$... 1 Edit Delete
9700 $\text{A person, who can swim with speed } u \text{ relative to water, wants to cross a river (of width } d \text{ and water is flowing with speed } v\text{). The minimum time in which the person can do so is:}$ 1 103 Recommended Questions $\frac{d}{v}$, $\frac{d}{u}$... 2 Edit Delete
9699 $\text{To the captain of a ship } A \text{ travelling with velocity } \vec{v}_A = (3\hat{i} - 4\hat{j}) \text{ km/h, a second ship } B \text{ appears to have a velocity } \vec{v}_B = (5\hat{i} + 12\hat{j}) \text{ km/h. What is the true velocity of the ship } B\text{?}$ 1 103 Recommended Questions $2\hat{i} + 16\hat{j} \text{ km/h}$, $13\hat{i} + 8\hat{j} \text{ km/h}$... 4 Edit Delete
9698 $\text{A ship } A \text{ is moving westward with a speed of 10 kmph and a ship } B\text{, 100 km South of } A\text{, is moving northward with a speed of 10 kmph. The time after which the distance between them becomes the shortest is:}$ 1 103 Recommended Questions $0 \text{ h}$, $5 \text{ h}$... 2 Edit Delete
9697 $\text{Two particles having position vectors } \vec{r_1} = (3\hat{i} + 5\hat{j}) \text{ metres and } \vec{r_2} = (-5\hat{i} - 3\hat{j}) \text{ metres are moving with velocities } \vec{v_1} = (4\hat{i} + 3\hat{j}) \text{ m/s and } \vec{v_2} = (\alpha\hat{i} + 7\hat{j}) \text{ m/s. If they collide after 2 seconds, the value of } \alpha \text{ is:}$ 1 103 Recommended Questions $2$, $4$... 4 Edit Delete
9696 $\text{It is raining at 20 m/s in still air. Now a wind starts blowing with speed 10 m/s in the north direction. If a cyclist starts moving at 10 m/s in the south direction, then the apparent velocity of rain with respect to a cyclist will be:}$ 1 103 Recommended Questions $20 \text{ m/s}$, $20\sqrt{2} \text{ m/s}$... 2 Edit Delete
9695 $\text{Rain is falling vertically with a speed of 30 m/s. A woman rides a bicycle with a speed of 10 m/s in the north to south direction. What is the direction in which she should hold her umbrella?}$ $\text{[Given: } \tan 16° = 0.29, \text{ \& } \tan 18° = 0.33\text{]}$ 1 103 Recommended Questions $16° \text{ with the vertical, towards north}$, $18° \text{ with the vertical, towards north}$... 4 Edit Delete
9694 $\text{Two men } P \text{ and } Q \text{ are standing at corners } A \text{ and } B \text{ of a square } ABCD \text{ of side 8 m. They start moving along the track with a constant speed 2 m/s and 10 m/s respectively. The time when they will meet for the first time is equal to:}$ 1 103 Recommended Questions $\text{2 sec}$, $\text{3 sec}$... 2 Edit Delete
9693 $\text{A river is flowing from east to west at a speed of 5 m/min. A man on south bank of river, capable of swimming 10 m/min in still water, wants to swim across the river in shortest time. He should swim:}$ 1 103 Recommended Questions $\text{Due north}$, $\text{Due north-east}$... 1 Edit Delete
9692 $\text{A man sitting in a bus travelling in a direction from west to east with a speed of 40 km/h observes that the rain-drops are falling vertically downwards. To another man standing on ground the rain will appear:}$ 1 103 Recommended Questions $\text{To fall vertically downwards}$, $\text{To fall at an angle going from west to east}$... 2 Edit Delete
9691 $\text{River of width 500 m is flowing at a speed of 10 m/s. A swimmer can swim at a speed of 10 m/s in still water. If he starts swimming at an angle of 120° with the flow direction, then the distance he travels along the river while crossing the river is:}$ 1 103 Recommended Questions $250 \text{ m}$, $500\sqrt{3} \text{ m}$... 3 Edit Delete
9690 $\text{Two bullets are fired horizontally and simultaneously towards each other from the rooftops of two buildings (building being 100 m apart and being of the same height of 200 m) with the same velocity of 25 m/s. When and where will the two bullets collide?}$ $(g = 10 \text{ m/s}^2)$ 1 103 Recommended Questions $\text{After 2 s at a height of 180 m}$, $\text{After 2 s at a height of 20 m}$... 1 Edit Delete
9689 $\text{The speed of water in a river is 4 km/h and a man can swim at 5 km/h. The minimum time taken by the man to cross the river of width 200 m is:}$ 1 103 Recommended Questions $\frac{1}{5} \text{ h}$, $\frac{1}{25} \text{ h}$... 2 Edit Delete
9688 $\text{A boat moves with a speed of 5 km/h relative to water in a river flowing with a speed of 3 km/h. Width of the river is 1 km. The minimum time taken for a round trip will be:}$ 1 103 Recommended Questions $\text{5 min}$, $\text{60 min}$... 4 Edit Delete
9687 $\text{A car is moving along east at 10 m/s and a bus is moving along north at 10 m/s. The velocity of the car with respect to the bus is along:}$ 1 103 Recommended Questions $\text{North-East}$, $\text{South-East}$... 2 Edit Delete
9686 $\text{A river is flowing from W to E with a speed of 5 m/min. A man can swim in still water with a velocity of 10 m/min. In which direction should the man swim so as to take the shortest possible path to go to the south:}$ 1 103 Recommended Questions $30° \text{ with downstream}$, $60° \text{ with downstream}$... 3 Edit Delete
9685 $\text{Two boys are standing at the ends A and B of the ground where } AB = a. \text{ The boy at B starts running in a direction perpendicular to AB with velocity } v_1. \text{ The boy at A starts running simultaneously with velocity } v \text{ and catches the other boy in a time } t, \text{ where } t \text{ is:}$ 1 103 Recommended Questions $\frac{a}{\sqrt{v^2 + v_1^2}}$, $\frac{a}{\sqrt{v^2 - v_1^2}}$... 2 Edit Delete
9684 $\text{A car with a vertical windshield moves in a rain storm at a speed of 40 km/hr. The rain drops fall vertically with a constant speed of 20 m/s. The angle at which raindrops strike the windshield is:}$ 1 103 Recommended Questions $\tan^{-1}\frac{5}{9}$, $\tan^{-1}\frac{9}{5}$... 1 Edit Delete
9683 $\text{Balls A and B are thrown from two points lying on the same horizontal plane separated by a distance of 120 m. Which of the following statements is correct?}$ 1 103 Recommended Questions $\text{The balls can never meet.}$, $\text{The balls can meet if the ball B is thrown 1 s later.}$... 3 Edit Delete
9682 $\text{Two particles are separated by a horizontal distance } x \text{ as shown in the figure. They are projected at the same time as shown in the figure with different initial speeds. The time after which the horizontal distance between them becomes zero will be:}$ 1 103 Recommended Questions $\frac{x}{u}$, $\frac{u}{2x}$... 1 Edit Delete
9681 $\text{A man is crossing a river flowing with a velocity of 5 m/s. He reaches a point directly across the river at a distance of 60 m in 5 s. His velocity in still water should be:}$ 1 103 Recommended Questions $12 \text{ m/s}$, $13 \text{ m/s}$... 2 Edit Delete
9680 $\text{When a man walks on a horizontal road with velocity 1 km/h, the rain appears to him coming vertically at a speed of 2 km/h. The actual speed of the rain with respect to ground is:}$ 1 103 Recommended Questions $\sqrt{3} \text{ km/h}$, $\sqrt{5} \text{ km/h}$... 2 Edit Delete
9679 $\text{A man can row a boat with a speed of 10 kmph in still water. The river flows at 6 kmph. If he crosses the river from one bank to the other along the shortest possible path, the time taken to cross the river of width 1 km is:}$ 1 103 Recommended Questions $\frac{1}{8} \text{ hr}$, $\frac{1}{4} \text{ hr}$... 1 Edit Delete
9678 $\text{A man standing on a road holds his umbrella at } 30° \text{ with the vertical to keep the rain away. He throws the umbrella and starts running at } 10 \text{ km/hr. He finds that raindrops are hitting his head vertically. The speed of raindrops with respect to the road will be:}$ 1 103 Recommended Questions $10 \text{ km/hr}$, $20 \text{ km/hr}$... 2 Edit Delete
9677 $\text{A swimmer swims a distance d upstream in 4 s and swims an equal distance downstream in 2 s. The ratio of swimmer's speed in still water to the speed of river water will be:}$ 1 103 Recommended Questions $\frac{6}{5}$, $\frac{3}{1}$... 2 Edit Delete
9676 $\text{A person reaches a point directly opposite on the other bank of a flowing river while swimming at a speed of } 5 \text{ m/s at an angle of } 120° \text{ with the flow. The speed of the flow must be:}$ 1 103 Recommended Questions $2.5 \text{ m/s}$, $3 \text{ m/s}$... 1 Edit Delete
9675 $\text{The raindrops are falling with speed } v \text{ vertically downwards and a man is running horizontal road with speed } u. \text{ The magnitude of the velocity of the raindrops with respect to the man is:}$ 1 103 Recommended Questions $v - u$, $v + u$... 4 Edit Delete
9674 $\text{A boat is moving with a velocity } 3\hat{i} + 4\hat{j} \text{ with respect to ground. The water in the river is moving with a velocity } -3\hat{i} - 4\hat{j} \text{ with respect to ground. The relative velocity of the boat with respect to water is:}$ 1 103 Recommended Questions $8\hat{j}$, $-6\hat{i} - 8\hat{j}$... 3 Edit Delete
9673 $\text{A man is walking on the road with a speed 3 m/s. Rain is falling vertically at speed 3 m/s. At what angle from the vertical, man has to hold his umbrella to avoid the rain drops?}$ 1 103 Recommended Questions $45°$, $30°$... 1 Edit Delete
9672 $\text{A man is walking on a horizontal road at a speed of 4 km/hr. Suddenly, the rain starts vertically downwards with a speed of 7 km/hr. The magnitude of the relative velocity of the rain with respect to the man is:}$ 1 103 Recommended Questions $\sqrt{33} \text{ km/hr}$, $\sqrt{65} \text{ km/hr}$... 2 Edit Delete
9671 $\text{Given below are two statements:}$ $\text{Assertion (A): Uniform circular motion is the only example of a situation in which the speed of a particle remains constant even though a force is acting on the particle.}$ $\text{Reason (R): In uniform circular motion, a force acting along the circle pushes the particle forward.}$ 1 103 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
9670 $\text{A particle of mass 2 kg is moving in a circular path with a constant speed of 10 m/s. The change in the magnitude of velocity when a particle travels from } P \text{ to } Q \text{ will be: [assume the radius of the circle is } 10/\pi^2\text{]}$ 1 103 Recommended Questions $10\sqrt{3}$, $20\sqrt{3}$... 4 Edit Delete
9669 $\text{A particle moves with constant angular velocity in a circle. During the motion its:}$ 1 103 Recommended Questions $\text{Energy is conserved}$, $\text{Momentum is conserved}$... 1 Edit Delete
9668 $\text{Figure below shows a body of mass } M \text{ moving with a uniform speed } v \text{ on a circular path of radius, } R\text{. What is the change in acceleration in going from } P_1 \text{ to } P_2\text{?}$ 1 103 Recommended Questions $\text{zero}$, $\frac{v^2}{2R}$... 4 Edit Delete
9667 $\text{A particle is projected with a speed } u \text{ at an angle } \theta \text{ to the horizontal. Radius of curvature at highest point of its trajectory is?}$ 1 103 Recommended Questions $\frac{u^2 \cos^2 \theta}{2g}$, $\frac{\sqrt{3}u^2 \cos^2 \theta}{2g}$... 3 Edit Delete
9666 $\text{An object moves at a constant speed along a circular path in a horizontal XY plane with its centre at the origin. When the object is at } x = -2 \text{ m, its velocity is } -(4 \text{ m/s})\hat{j}\text{. What is the object's acceleration when it is at } y = 2 \text{ m?}$ 1 103 Recommended Questions $-8 \text{ m/s}^2 \hat{j}$, $-8 \text{ m/s}^2 \hat{i}$... 1 Edit Delete
9665 $\text{A particle rotates in a circular path starting from rest. If angular acceleration is } 4 \text{ rad/s}^2\text{, then the time after which angle between net acceleration and tangential acceleration becomes } 45^\circ \text{ is?}$ 1 103 Recommended Questions $0.5 \text{ s}$, $0.25 \text{ s}$... 1 Edit Delete
9664 $\text{Which one of the following is not true?}$ 1 103 Recommended Questions $\text{The net acceleration of a particle in a circular motion is always along the radius of the circle towards the centre.}$, $\text{The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point.}$... 1 Edit Delete
9663 $\text{Which of the following statement/s is/are incorrect regarding the motion in a plane?}$ 1 103 Recommended Questions $\text{a body can't move on a curved path with constant acceleration.}$, $\text{the angle between acceleration and velocity can be 90°.}$... 1 Edit Delete
9662 $\text{A particle moves along a circle of radius } \frac{20}{\pi} \text{ m with constant tangential acceleration. If the velocity of the particle is 80 m/s at the end of the second revolution after motion has begun, the tangential acceleration is:}$ 1 103 Recommended Questions $40 \text{ ms}^{-2}$, $640\pi \text{ ms}^{-2}$... 1 Edit Delete
9661 $\text{A particle moves with constant speed } v \text{ along a circular path of radius } r \text{ and completes the circle in time } T. \text{ The acceleration of the particle is:}$ 1 103 Recommended Questions $\frac{2\pi v}{T}$, $\frac{2\pi r}{T}$... 1 Edit Delete
9660 $\text{A deer wants to save her life from a lion. The lion follows a path whose equation is } x^2 + y^2 = 16. \text{ For saving her life, the deer needs to move on a path whose equation will be:}$ 1 103 Recommended Questions $x^2 + y^2 = 4$, $x^2 + y^2 = 16$... 4 Edit Delete
9659 $\text{The magnitude of vector } \vec{A} \text{ is constant but it is changing its direction continuously. The angle between } \vec{A} \text{ and } \frac{d\vec{A}}{dt} \text{ is:}$ 1 103 Recommended Questions $180°$, $120°$... 3 Edit Delete
9658 $\text{A stone tied to the end of a string 80 cm long is whirled in a horizontal circle at a constant speed. If the stone makes 14 revolutions in 25 s, what is the magnitude of the acceleration of the stone?}$ 1 103 Recommended Questions $8.1 \text{ ms}^{-2}$, $7.7 \text{ ms}^{-2}$... 4 Edit Delete
9657 $\text{Certain neutron stars are believed to be rotating at about 1 rev/s. If such a star has a radius of 20 km, the acceleration of an object on the equator of the star will be:}$ 1 103 Recommended Questions $20 \times 10^8 \text{ m/s}^2$, $8 \times 10^5 \text{ m/s}^2$... 2 Edit Delete
9656 $\text{A particle starts moving on a circular path from rest, such that its tangential acceleration varies with time as } a_t = kt. \text{ Distance travelled by particle on the circular path in time } t \text{ is:}$ 1 103 Recommended Questions $\frac{kt^3}{3}$, $\frac{kt^2}{6}$... 3 Edit Delete
9655 $\text{A car is moving at a speed of 40 m/s on a circular track of radius 400 m. This speed is increasing at the rate of 3 m/s}^2. \text{ The acceleration of the car is:}$ 1 103 Recommended Questions $4 \text{ m/s}^2$, $7 \text{ m/s}^2$... 3 Edit Delete
9654 $\text{A particle moves in the } (x-y) \text{ plane according to the rule } x = a\sin(\omega t) \text{ and } y = a\cos(\omega t). \text{ The particle follows:}$ 1 103 Recommended Questions $\text{a circular path.}$, $\text{a parabolic path.}$... 1 Edit Delete
9653 $\text{In a uniform circular motion, if the speed of the particle is 2 m/s and radius of the circle is 2 m, then the values of centripetal and tangential acceleration are, respectively:}$ 1 103 Recommended Questions $2 \text{ m/s}^2, 2 \text{ m/s}^2$, $2 \text{ m/s}^2, 1 \text{ m/s}^2$... 4 Edit Delete
9652 $\text{A stone tied to the end of a 1 m long string is whirled in a horizontal circle at a constant speed. If the stone makes 22 revolutions in 44 seconds, what is the magnitude and direction of acceleration of the stone?}$ 1 103 Recommended Questions $\pi^2 \text{ ms}^{-2} \text{ and direction along the tangent to the circle.}$, $\pi^2 \text{ ms}^{-2} \text{ and direction along the radius towards the centre.}$... 2 Edit Delete
9651 $\text{If a particle is moving in a circular orbit with constant speed, then:}$ 1 103 Recommended Questions $\text{its velocity is variable.}$, $\text{its acceleration is variable.}$... 4 Edit Delete
9650 $\text{A particle is moving along a circle of radius } R \text{ with constant speed } v_0. \text{ What is the magnitude of change in velocity when the particle goes from point } A \text{ to } B \text{ as shown?}$ 1 103 Recommended Questions $2v_0 \sin \frac{\theta}{2}$, $v_0 \sin \frac{\theta}{2}$... 1 Edit Delete
9649 $\text{The position vector of a particle is } \vec{r} = a \sin \omega t \hat{i} + a \cos \omega t \hat{j}. \text{ The velocity of the particle is:}$ 1 103 Recommended Questions $\text{parallel to the position vector.}$, $\text{at } 60^\circ \text{ with position vector.}$... 4 Edit Delete
9648 $\text{Two particles } A \text{ and } B \text{ are moving in a uniform circular motion in concentric circles of radii } r_A \text{ and } r_B \text{ with speeds } v_A \text{ and } v_B \text{ respectively. Their time periods of rotation are the same. The ratio of the angular speed of } A \text{ to that of } B \text{ will be:}$ 1 103 Recommended Questions $1 : 1$, $r_A : r_B$... 1 Edit Delete
9647 $\text{A car moves on a circular path such that its speed is given by } v = Kt, \text{ where } K = \text{constant and } t \text{ is time. Also given radius of the circular path is } r. \text{ The net acceleration of the car at time } t \text{ will be:}$ 1 103 Recommended Questions $\sqrt{K^2 + \left(\frac{K^2t^2}{r}\right)^2}$, $2K$... 1 Edit Delete
9646 $\text{A particle moves in a circle of radius 5 cm with constant speed and time period 0.2π s. The acceleration of the particle is:}$ 1 103 Recommended Questions $25 \text{ m/s}^2$, $36 \text{ m/s}^2$... 3 Edit Delete
9645 $\text{If the equation for the displacement of a particle moving on a circular path is given by } \theta = 2t^3 + 0.5 \text{ where } \theta \text{ is in radians and } t \text{ in seconds, then the angular velocity of the particle after 2 sec from its start is:}$ 1 103 Recommended Questions $8 \text{ rad/sec}$, $12 \text{ rad/sec}$... 3 Edit Delete
9644 $\text{The angle turned by a body undergoing circular motion depends on the time as given by the equation, } \theta = \theta_0 + \theta_1 t + \theta_2 t^2. \text{ It can be deduced that the angular acceleration of the body is?}$ 1 103 Recommended Questions $\theta_1$, $\theta_2$... 4 Edit Delete
9643 $\text{Given below are two statements:}$ $\textbf{Assertion (A):} \text{ The maximum height of a projectile is always 25% of the maximum range.}$ $\textbf{Reason (R):} \text{ For maximum height, the projectile should be projected at } 90°.$ 1 103 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
9642 $\text{A particle is projected with a velocity } v \text{ such that its range on the horizontal plane is twice the greatest height attained by it. The range of the projectile is: (where } g \text{ is acceleration due to gravity)}$ 1 103 Recommended Questions $\frac{4v^2}{5g}$, $\frac{4g}{5v^2}$... 1 Edit Delete
9641 $\text{A body is projected with a velocity } u \text{ with an angle of projection } \theta\text{. Change in velocity after the time } (t) \text{ from the time of projection will be:}$ 1 103 Recommended Questions $gt$, $\frac{1}{2}gt^2$... 1 Edit Delete
9640 $\text{Two particles are projected with the same initial velocity, one makes an angle } \theta \text{ with the horizontal while the other makes an angle } \theta \text{ with the vertical. If their common range is } R\text{, then the product of their time of flight is directly proportional to:}$ 1 103 Recommended Questions $R$, $R^2$... 1 Edit Delete
9639 $\text{A body is projected at an angle of 30° with the horizontal with a speed of 30 m/s. What is the angle made by the velocity vector with the horizontal after 1.5 sec? } (g = 10 \text{ m/s}^2)$ 1 103 Recommended Questions $0°$, $30°$... 1 Edit Delete
9638 $\text{The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is:}$ 1 103 Recommended Questions $15°$, $30°$... 4 Edit Delete
9637 $\text{Path of a projectile with respect to another projectile so long as both remain in the air is:}$ 1 103 Recommended Questions $\text{Circular}$, $\text{Parabolic}$... 3 Edit Delete
9636 $\text{A projectile is projected with initial kinetic energy }K\text{. If it has kinetic energy }0.25K\text{ at its highest point, then the angle of projection is:}$ 1 103 Recommended Questions $30°$, $45°$... 3 Edit Delete
9635 $\text{A particle is projected from a horizontal plane (}x\text{-}z\text{ plane) such that its velocity vector at time }t\text{ is given by }\vec{v} = a\hat{i} + (b - ct)\hat{j}\text{. Its range on this horizontal plane is given by:}$ 1 103 Recommended Questions $\frac{ba}{c}$, $\frac{2ba}{c}$... 2 Edit Delete
9634 $\text{An object of mass } m \text{ is projected from the ground with a momentum } p \text{ at such an angle that its maximum height is } \frac{1}{4}\text{th of its horizontal range. Its minimum kinetic energy in its path will be:}$ 1 103 Recommended Questions $\frac{p^2}{8m}$, $\frac{p^2}{4m}$... 2 Edit Delete
9633 $\text{A body is thrown vertically so as to reach its maximum height in } t \text{ second. The total time from the time of projection to reach a point at half of its maximum height while returning (in second) is:}$ 1 103 Recommended Questions $\sqrt{2}t$, $\left(1 + \frac{1}{\sqrt{2}}\right)t$... 2 Edit Delete
9632 $\text{A projectile is projected from the ground with the velocity } v_0 \text{ at an angle } \theta \text{ with the horizontal. What is the vertical component of the velocity of the projectile when its vertical displacement is equal to half of the maximum height attained?}$ 1 103 Recommended Questions $\sqrt{3}v_0 \cos \theta$, $\frac{v_0}{\sqrt{2}} \sin \theta$... 2 Edit Delete
9631 $\text{A body is thrown horizontally with a velocity } \sqrt{2gh} \text{ from the top of a tower of height } h. \text{ It strikes the level ground through the foot of the tower at a distance } x \text{ from the tower. The value of } x \text{ is:}$ 1 103 Recommended Questions $h$, $\frac{h}{2}$... 3 Edit Delete
9630 $\text{A projectile is fired from the surface of the earth with a velocity of 5 m/s and at an angle } \theta \text{ with the horizontal. Another projectile fired from another planet with a velocity of 3 m/s at the same angle follows a trajectory that is identical to the trajectory of the projectile fired from the Earth. The value of the acceleration due to gravity on the other planet is: (given } g = 9.8 \text{ m/s}^2\text{)}$ 1 103 Recommended Questions $3.5 \text{ m/s}^2$, $5.9 \text{ m/s}^2$... 1 Edit Delete
9629 $\text{The equation of a projectile is } y = ax - bx^2. \text{ Its horizontal range is?}$ 1 103 Recommended Questions $\frac{a}{b}$, $\frac{b}{a}$... 1 Edit Delete
9628 $\text{The velocity at the maximum height of a projectile is } \frac{\sqrt{3}}{2} \text{ times its initial velocity of projection } (u). \text{ Its range on the horizontal plane is:}$ 1 103 Recommended Questions $\frac{\sqrt{3}u^2}{2g}$, $\frac{3u^2}{2g}$... 1 Edit Delete
9627 $\text{Three balls are thrown from the top of a building with equal speeds at different angles. When the balls strike the ground, their speeds are } v_1, v_2 \text{ and } v_3 \text{ respectively, then:}$ 1 103 Recommended Questions $v_1 > v_2 > v_3$, $v_3 > v_2 = v_1$... 3 Edit Delete
9626 $\text{Four bodies } P, Q, R \text{ and } S \text{ are projected with equal velocities having angles of projection } 15°, 30°, 45°, \text{ and } 60° \text{ with the horizontal respectively. The body having the shortest range is?}$ 1 103 Recommended Questions $P$, $Q$... 1 Edit Delete
9625 $\text{Two bullets are fired simultaneously horizontally and at different speeds from the same place. Which bullet will hit the ground first? (Air resistance is neglected)}$ 1 103 Recommended Questions $\text{The faster one}$, $\text{The slower one}$... 4 Edit Delete
9624 $\text{A shell is fired vertically upward with a velocity of 20 m/s from a trolley moving horizontally with a velocity of 10 m/s. A person on the ground observes the motion of the shell like a parabola whose horizontal range is: } (g = 10 \text{ m/s}^2)$ 1 103 Recommended Questions $20 \text{ m}$, $10 \text{ m}$... 3 Edit Delete
9623 $\text{The horizontal range and the maximum height of a projectile are equal. The angle of projection of the projectile is:}$ 1 103 Recommended Questions $\theta = \tan^{-1}\left(\frac{1}{4}\right)$, $\theta = \tan^{-1}(4)$... 2 Edit Delete
9622 $\text{The horizontal range of a projectile is } 4\sqrt{3} \text{ times its maximum height. Its angle of projection will be:}$ 1 103 Recommended Questions $45°$, $60°$... 4 Edit Delete
9621 $\text{When a particle is projected at some angle to the horizontal, it has a range } R \text{ and time of flight } t_1. \text{ If the same particle is projected with the same speed at some other angle to have the same range, its time of flight is } t_2, \text{ then:}$ 1 103 Recommended Questions $t_1 + t_2 = \frac{2R}{g}$, $t_1 - t_2 = \frac{R}{g}$... 3 Edit Delete
9620 $\text{The equation of trajectory of a projectile is given by } y = x - 10x^2 \text{. Its speed of projection is: } (g = 10 \text{ m/s}^2)$ 1 103 Recommended Questions $1 \text{ m/s}$, $2 \text{ m/s}$... 1 Edit Delete
9619 $\text{A cricketer can throw a ball to a maximum horizontal distance of 100 m. With the same effort, he throws the ball vertically upwards. The maximum height attained by the ball is:}$ 1 103 Recommended Questions $100 \text{ m}$, $80 \text{ m}$... 4 Edit Delete
9618 $\text{A body is projected with velocity } \vec{v} = (\alpha \hat{i} + \beta \hat{j}) \text{ m/s. The time of flight of the body is: [considering } x \text{ as horizontal and } y \text{ as vertical axis and } g \text{ is acceleration due to gravity]}$ 1 103 Recommended Questions $\frac{2\beta}{g}$, $\frac{2\alpha}{g}$... 1 Edit Delete
9617 $\text{A particle is thrown obliquely at } t = 0. \text{ The particle has the same K.E. at } t = 5 \text{ seconds and at } t = 9 \text{ seconds. The particle attains maximum altitude at:}$ 1 103 Recommended Questions $t = 6 \text{ s}$, $t = 7 \text{ s}$... 2 Edit Delete
9616 $\text{A particle } (A) \text{ is dropped from a height and another particle } (B) \text{ is projected in a horizontal direction with a speed of 5 m/s from the same height. The correct statement, from the following, is:}$ 1 103 Recommended Questions $\text{Particle } (A) \text{ will reach the ground first with respect to particle } (B).$, $\text{Particle } (B) \text{ will reach the ground first with respect to particle } (A).$... 3 Edit Delete
9615 $\text{A body is projected with a velocity of } (3\hat{i} + 4\hat{j}) \text{ m/s. The maximum height attained by the projectile is: } (g = 10 \text{ ms}^{-2})$ 1 103 Recommended Questions $0.8 \text{ m}$, $8 \text{ m}$... 1 Edit Delete
9614 $\text{What determines the nature of the path followed by a particle:}$ 1 103 Recommended Questions $\text{Speed}$, $\text{Velocity}$... 4 Edit Delete
9613 $\text{If two projectiles, with the same masses and with the same velocities, are thrown at an angle } 60° \text{ and } 30° \text{ with the horizontal, then which of the following quantities will remain the same?}$ 1 103 Recommended Questions $\text{time of flight}$, $\text{horizontal range of projectile}$... 2 Edit Delete
9612 $\text{The position coordinates of a projectile projected from ground on a certain planet (with no atmosphere) are given by } y = 4t - 2t^2 \text{ m and } x = 3t \text{ metre, where } t \text{ is in seconds and point of projection is taken as the origin. The angle of projection of projectile with vertical is:}$ 1 103 Recommended Questions $30°$, $37°$... 2 Edit Delete
9611 $\text{A ball is projected at a certain angle with initial velocity } u\text{. It covers horizontal range } R\text{. With what initial velocity it should be projected keeping the angle of projection the same so that its horizontal range becomes } 2.25R\text{?}$ 1 103 Recommended Questions $2.5u$, $1.5u$... 2 Edit Delete
9610 $\text{A missile is fired for a maximum range with an initial velocity of } 20 \text{ m/s. If } g = 10 \text{ m/s}^2\text{, then the range of the missile will be:}$ 1 103 Recommended Questions $50 \text{ m}$, $60 \text{ m}$... 4 Edit Delete
9609 $\text{An airplane is moving with a velocity } u\text{. It drops a packet from a height } h\text{. The time } t \text{ taken by the packet to reach the ground will be:}$ 1 103 Recommended Questions $\sqrt{\frac{2g}{h}}$, $\sqrt{\frac{2u}{g}}$... 4 Edit Delete
9608 $\text{The velocity of a projectile at the initial point } A \text{ is } 2\hat{i} + 3\hat{j} \text{ m/s. Its velocity (in m/s) at the point } B \text{ is:}$ 1 103 Recommended Questions $-2\hat{i} + 3\hat{j}$, $2\hat{i} - 3\hat{j}$... 2 Edit Delete
9607 $\text{A stone projected with a velocity } u \text{ at an angle } \theta \text{ with the horizontal reaches maximum height } H_1\text{. When it is projected with velocity } u \text{ at an angle } \left(\frac{\pi}{2} - \theta\right) \text{ with the horizontal, it reaches maximum height } H_2\text{. The relation between the horizontal range of the projectile } R \text{ and } H_1 \text{ and } H_2 \text{ is:}$ 1 103 Recommended Questions $R = 4\sqrt{H_1 H_2}$, $R = 4(H_1 - H_2)$... 1 Edit Delete
9606 $\text{For a projectile projected at angles } (45° - \theta) \text{ and } (45° + \theta)\text{, the horizontal ranges described by the projectile are in the ratio of:}$ 1 103 Recommended Questions $1 : 1$, $2 : 3$... 1 Edit Delete
9605 $\text{At the top of the trajectory of a projectile, the directions of its velocity and acceleration are:}$ 1 103 Recommended Questions $\text{perpendicular to each other.}$, $\text{parallel to each other.}$... 1 Edit Delete
9604 $\text{Two inclined planes are placed as shown in the figure. A block is projected from the Point } A \text{ of the inclined plane } AB \text{ along its surface with a velocity just sufficient to carry it to the top point } B \text{ at a height of 10 m. After reaching the point } B \text{ the block slides down on the inclined plane } BC\text{. The time it takes to reach the point } C \text{ from the point } A \text{ is } t(\sqrt{2} + 1) \text{ s. The value of } t \text{ is: (Take } g = 10 \text{ m/s}^2)$ 1 103 Recommended Questions $1$, $2$... 2 Edit Delete
9603 $\text{A frictionless wire } AB \text{ is fixed on a sphere of radius } R\text{. A very small spherical ball slips on this wire. The time taken by this ball to slip from } A \text{ to } B \text{ is:}$ 1 103 Recommended Questions $\frac{2\sqrt{gR}}{g\cos\theta}$, $2\sqrt{gR} \cdot \frac{\cos\theta}{g}$... 3 Edit Delete
9602 $\text{A particle starts from the origin at } t = 0 \text{ with a velocity of } 5.0\hat{i} \text{ m/s and moves in the } x-y \text{ plane under the action of a force that produces a constant acceleration of } (3.0\hat{i} + 2.0\hat{j}) \text{ m/s}^2\text{. What is the } y\text{-coordinate of the particle at the instant its } x\text{-coordinate is 84 m?}$ 1 103 Recommended Questions $36 \text{ m}$, $26 \text{ m}$... 1 Edit Delete
9601 $\text{A body is slipping from an inclined plane of height } h \text{ and length } l\text{. If the angle of inclination is } \theta\text{, the time taken by the body to come from the top to the bottom of this inclined plane is:}$ 1 103 Recommended Questions $\sqrt{\frac{2h}{g}}$, $\sqrt{\frac{2l}{g}}$... 3 Edit Delete
9600 $\text{A particle starts moving with constant acceleration with initial velocity } (\hat{i} + 5\hat{j}) \text{ m/s. After 4 seconds, its velocity becomes } (3\hat{i} - 2\hat{j}) \text{ m/s. The magnitude of its displacement in 4 seconds is:}$ 1 103 Recommended Questions $5 \text{ m}$, $10 \text{ m}$... 2 Edit Delete
9599 $\text{A particle starts from the origin at } t = 0 \text{ sec with a velocity of } 10\hat{j} \text{ m/s and moves in the } x-y \text{ plane with a constant acceleration of } (8.0\hat{i} + 2.0\hat{j}) \text{ m/s}^2\text{. At what time is the } x\text{-coordinate of the particle 16 m?}$ 1 103 Recommended Questions $2 \text{ s}$, $3 \text{ s}$... 1 Edit Delete
9598 $\text{A particle starts from the origin at } t = 0 \text{ with a velocity of } 5.0\hat{i} \text{ m/s and moves in the } x-y \text{ plane under the action of a force that produces a constant acceleration of } (3.0\hat{i} + 2.0\hat{j}) \text{ m/s}^2\text{. What is the speed of the particle at the instant its } x\text{-coordinate is 84 m?}$ 1 103 Recommended Questions $36 \text{ m/s}$, $26 \text{ m/s}$... 2 Edit Delete
9597 $\text{The time taken by a block of wood (initially at rest) to slide down a smooth inclined plane 9.8 m long (angle of inclination is 30°) is:}$ 1 103 Recommended Questions $\frac{1}{2} \text{ sec}$, $2 \text{ sec}$... 2 Edit Delete
9596 $\text{A body sliding on a smooth inclined plane requires 4 seconds to reach the bottom starting from the rest at the top. How much time does it take to cover one-fourth distance starting from the rest at the top?}$ 1 103 Recommended Questions $1 \text{ s}$, $2 \text{ s}$... 2 Edit Delete
9595 $\text{A body started moving with an initial velocity of 4 m/s along the east and an acceleration 1 m/s}^2 \text{ along the north. The velocity of the body just after 4 s will be?}$ 1 103 Recommended Questions $8 \text{ m/s along East.}$, $4\sqrt{2} \text{ m/s along North-East.}$... 2 Edit Delete
9594 $\text{A particle has an initial velocity } \vec{u} = (4\hat{i} - 5\hat{j}) \text{ m/s and it is moving with an acceleration } \vec{a} = \left(\frac{1}{4}\hat{i} + \frac{3}{5}\hat{j}\right) \text{ m/s}^2. \text{ Velocity of the particle at } t = 2 \text{ s will be:}$ 1 103 Recommended Questions $(6\hat{i} - 4\hat{j}) \text{ m/s}$, $(4.5\hat{i} - 4.5\hat{j}) \text{ m/s}$... 3 Edit Delete
9593 $\text{A particle has an initial velocity } (2\hat{i} + 3\hat{j}) \text{ and an acceleration } (0.3\hat{i} + 0.2\hat{j}). \text{ The magnitude of velocity after 10 s will be:}$ 1 103 Recommended Questions $9\sqrt{2} \text{ units}$, $5\sqrt{2} \text{ units}$... 2 Edit Delete
9592 $\text{A man sitting in a bus travelling in a direction from west to east with a speed of 40 km/h observes that the rain-drops are falling vertically downwards. To another man standing on ground the rain will appear:}$ 1 103 Recommended Questions $\text{To fall vertically downwards}$, $\text{To fall at an angle going from west to east}$... 4 Edit Delete
9591 $\text{River of width 500 m is flowing at a speed of 10 m/s. A swimmer can swim at a speed of 10 m/s in still water. If he starts swimming at an angle of 120° with the flow direction, then the distance he travels along the river while crossing the river is:}$ 1 103 Recommended Questions $\text{250 m}$, $500\sqrt{3}\text{ m}$... 1 Edit Delete
9590 $\text{Two bullets are fired horizontally and simultaneously towards each other from the rooftops of two buildings (building being 100 m apart and being of the same height of 200 m) with the same velocity of 25 m/s. When and where will the two bullets collide?}$ $(g = 10 \text{ m/s}^2)$ 1 103 Recommended Questions $\text{After 2 s at a height of 180 m}$, $\text{After 2 s at a height of 20 m}$... 2 Edit Delete
9589 $\text{The speed of water in a river is 4 km/h and a man can swim at 5 km/h. The minimum time taken by the man to cross the river of width 200 m is:}$ 1 103 Recommended Questions $\frac{1}{5}\text{ h}$, $\frac{1}{25}\text{ h}$... 4 Edit Delete
9588 $\text{A boat moves with a speed of 5 km/h relative to water in a river flowing with a speed of 3 km/h. Width of the river is 1 km. The minimum time taken for a round trip will be:}$ 1 103 Recommended Questions $\text{5 min}$, $\text{60 min}$... 2 Edit Delete
9587 $\text{A car is moving along east at 10 m/s and a bus is moving along north at 10 m/s. The velocity of the car with respect to the bus is along:}$ 1 103 Recommended Questions $\text{North-East}$, $\text{South-East}$... 4 Edit Delete
9586 $\text{A river is flowing from } W \text{ to } E \text{ with a speed of 5 m/min. A man can swim in still water with a velocity of 10 m/min. In which direction should the man swim so as to take the shortest possible path to go to the south:}$ 1 103 Recommended Questions $30^\circ \text{ with downstream}$, $60^\circ \text{ with downstream}$... 4 Edit Delete
9585 $\text{Two boys are standing at the ends } A \text{ and } B \text{ of the ground where } AB = a\text{. The boy at } B \text{ starts running in a direction perpendicular to } AB \text{ with velocity } v_1\text{. The boy at } A \text{ starts running simultaneously with velocity } v \text{ and catches the other boy in a time } t\text{, where } t \text{ is:}$ 1 103 Recommended Questions $\frac{a}{\sqrt{v^2 + v_1^2}}$, $\frac{a}{\sqrt{v^2 - v_1^2}}$... 3 Edit Delete
9584 $\text{A car with a vertical windshield moves in a rain storm at a speed of 40 km/hr. The rain drops fall vertically with a constant speed of 20 m/s. The angle at which raindrops strike the windshield is:}$ 1 103 Recommended Questions $\tan^{-1} \frac{5}{9}$, $\tan^{-1} \frac{9}{5}$... 2 Edit Delete
9583 $\text{Balls } A \text{ and } B \text{ are thrown from two points lying on the same horizontal plane separated by a distance of 120 m. Which of the following statements is correct?}$ 1 103 Recommended Questions $\text{The balls can never meet.}$, $\text{The balls can meet if the ball } B \text{ is thrown 1 s later.}$... 4 Edit Delete
9582 $\text{If the position of a particle varies according to the equations } x = 3t^2, y = 2t, \text{ and } z = 4t + 4, \text{ then which of the following is incorrect?}$ 1 103 Recommended Questions $\text{Velocities in } y \text{ and } z \text{ directions are constant}$, $\text{Acceleration in the } x \text{ direction is non-uniform}$... 2 Edit Delete
9581 $\text{A body is moving with a velocity of 30 m/s towards the east. After 10 s, its velocity becomes 40 m/s towards the north. The average acceleration of the body is:}$ 1 103 Recommended Questions $7 \text{ m/s}^2$, $\sqrt{7} \text{ m/s}^2$... 3 Edit Delete
9580 $\text{The } x \text{ and } y \text{ coordinates of the particle at any time are } x = 5t - 2t^2 \text{ and } y = 10t \text{ respectively, where } x \text{ and } y \text{ are in meters and } t \text{ in seconds. The acceleration of the particle at } t = 2 \text{ s is:}$ 1 103 Recommended Questions $5\hat{i} \text{ m/s}^2$, $-4\hat{i} \text{ m/s}^2$... 2 Edit Delete
9579 $\text{The position vector of a particle } \vec{r} \text{ as a function of time } t \text{ (in seconds) is } \vec{r} = 3t\hat{i} + 2t^2\hat{j} \text{ m. The initial acceleration of the particle is:}$ 1 103 Recommended Questions $2 \text{ m/s}^2$, $3 \text{ m/s}^2$... 3 Edit Delete
9578 $\text{In a two-dimensional motion, instantaneous speed } v_0 \text{ is a positive constant. Then which of the following is necessarily true?}$ 1 103 Recommended Questions $\text{The acceleration of the particle is zero.}$, $\text{The acceleration of the particle is increasing.}$... 3 Edit Delete
9577 $\text{A particle projected from origin moves in the } x\text{-}y \text{ plane with a velocity } \vec{v} = 3\hat{i} + 6x\hat{j}, \text{ where } \hat{i} \text{ and } \hat{j} \text{ are the unit vectors along the } x \text{ and } y\text{-axis. The equation of path followed by the particle is:}$ 1 103 Recommended Questions $y = x^2$, $y = \frac{1}{x^2}$... 1 Edit Delete
9576 $\text{The coordinates of a moving particle at a time } t \text{ are given by } x = 5 \sin 10t, y = 5 \cos 10t. \text{ It can be deduced that the speed of the particle will be:}$ 1 103 Recommended Questions $25 \text{ units}$, $50 \text{ units}$... 2 Edit Delete
9575 $\text{In a two-dimensional motion, instantaneous speed } v_0 \text{ is a positive constant. Then which of the following is necessarily true?}$ 1 103 Recommended Questions $\text{the average velocity is not zero at any time.}$, $\text{average acceleration must always vanish.}$... 4 Edit Delete
9574 $\text{A particle is moving with velocity } \vec{v} = k(y\hat{i} + x\hat{j}) \text{ where } k \text{ is a constant. The general equation for the path will be:}$ 1 103 Recommended Questions $y = x^2 + \text{constant}$, $y^2 = x^2 + \text{constant}$... 2 Edit Delete
9573 $\text{Three particles are moving with constant velocities } v_1, v_2 \text{ and } v \text{ respectively as given in the figure. After some time, if all the three particles are in the same line, then the relation among } v_1, v_2 \text{ and } v \text{ is:}$ 1 103 Recommended Questions $v = v_1 + v_2$, $v = \sqrt{v_1 v_2}$... 4 Edit Delete
9572 $\text{A bus is going to the North at a speed of 30 kmph. It makes a 90° left turn without changing the speed. The change in the velocity of the bus is:}$ 1 103 Recommended Questions $\text{30 kmph towards W}$, $\text{30 kmph towards S-W}$... 3 Edit Delete
9571 \text{The following are four different relations about displacement, velocity, and acceleration for the motion of a particle in general. Choose the incorrect statement(s):} \text{a. } v_{\text{avg}} = \frac{1}{2}[v(t_1) + v(t_2)] \text{b. } v_{\text{avg}} = \frac{r(t_2) - r(t_1)}{t_2 - t_1} \text{c. } r = \frac{1}{2}[v(t_2) - v(t_1)](t_2 - t_1) \text{d. } a_{\text{avg}} = \frac{v(t_2) - v(t_1)}{t_2 - t_1} 1 103 Recommended Questions $\text{(a), (d)}$, $\text{(a), (c)}$... 2 Edit Delete
9570 $\text{For any arbitrary motion in space, which of the following relations is true?}$ 1 103 Recommended Questions $\vec{v}_{avg} = \frac{1}{2}[\vec{v}(t_1) + \vec{v}(t_2)]$, $\vec{v}(t) = \vec{v}(0) + \vec{a}t$... 4 Edit Delete
9569 $\text{A particle starts moving from the origin in the XY plane and its velocity after time t is given by } \vec{v} = 4\hat{i} + 2t\hat{j}\text{. The trajectory of the particle is correctly shown in the figure:}$ 1 103 Recommended Questions $\text{Upward opening parabola (concave up)}$, $\text{Straight diagonal line}$... 3 Edit Delete
9568 $\text{A particle moves on the curve } x^2 = 2y\text{. The angle of its velocity vector with the x-axis at the point } \left(1, \frac{1}{2}\right) \text{ will be:}$ 1 103 Recommended Questions $30°$, $60°$... 3 Edit Delete
9567 $\text{Two particles move from A to C and A to D on a circle of radius R and the diameter AB. If the time taken by both particles is the same, then the ratio of magnitudes of their average velocities is:}$ 1 103 Recommended Questions $2$, $2\sqrt{3}$... 3 Edit Delete
9566 $\text{The position of a particle is given by: } \vec{r} = (3.0t\hat{i} - 2.0t^2\hat{j} + 4.0\hat{k}) \text{ m, where t is in seconds and the coefficients have the proper units for r to be in meters. The magnitude and direction of } \vec{v}(t) \text{ at } t = 1.0 \text{ s are:}$ 1 103 Recommended Questions $4 \text{ m/s, } 53° \text{ with x-axis}$, $4 \text{ m/s, } 37° \text{ with x-axis}$... 4 Edit Delete
9565 $\text{Two particles A and B, move with constant velocities } \vec{v_1} \text{ and } \vec{v_2}\text{. At the initial moment their position vector are } \vec{r_1} \text{ and } \vec{r_2} \text{ respectively. The conditions for particles A and B for their collision to happen will be:}$ 1 103 Recommended Questions $\vec{r_1} \cdot \vec{v_1} = \vec{r_2} \cdot \vec{v_2}$, $\vec{r_1} \times \vec{v_1} = \vec{r_2} \times \vec{v_2}$... 4 Edit Delete
9564 \text{A particle moves along the positive branch of the curve } y = \frac{x^2}{2} \text{where } x = \frac{t^2}{2} \text{x and y are measured in metres and t in seconds respectively.} \text{At } t = 2 \text{ s, the velocity of the particle will be:} 1 103 Recommended Questions $(2\hat{i} - 4\hat{j}) \text{ m/s}$, $(4\hat{i} + 2\hat{j}) \text{ m/s}$... 3 Edit Delete
9563 $\text{In 1.0 s, a particle goes from point A to point B, moving in a semicircle of radius 1.0 m (see figure). The magnitude of the average velocity is:}$ 1 103 Recommended Questions $3.14 \text{ m/s}$, $2.0 \text{ m/s}$... 2 Edit Delete
9562 $\text{The coordinates of a moving particle at any time } t \text{ are given by } x = \alpha t^3 \text{ and } y = \beta t^3. \text{ The speed of the particle at a time } t \text{ is given by:}$ 1 103 Recommended Questions $\sqrt{\alpha^2 + \beta^2}$, $3t\sqrt{\alpha^2 + \beta^2}$... 3 Edit Delete
9561 $\text{If three coordinates of a particle change according to the equations } x = 3t^2, y = 2t, z = 4, \text{ then the magnitude of the velocity of the particle at time } t = 1 \text{ second will be:}$ 1 103 Recommended Questions $2\sqrt{11} \text{ unit}$, $\sqrt{34} \text{ unit}$... 4 Edit Delete
9560 $\text{A car turns at a constant speed on a circular track of radius 100 m, taking 62.8 s for every circular lap. The average velocity and average speed for each circular lap, respectively, is:}$ 1 103 Recommended Questions $0, 0$, $0, 10 \text{ m/s}$... 2 Edit Delete
9559 $\text{A particle is moving such that its position coordinates } (x, y) \text{ are } (2 \text{ m}, 3 \text{ m}) \text{ at time } t = 0, (6 \text{ m}, 7 \text{ m}) \text{ at time } t = 2 \text{ s and } (13 \text{ m}, 14 \text{ m}) \text{ at time } t = 5 \text{ s. The average velocity vector } (v_{avg}) \text{ from } t = 0 \text{ to } t = 5 \text{ s is:}$ 1 103 Recommended Questions $\frac{1}{5}(13\hat{i} + 14\hat{j})$, $\frac{7}{3}(\hat{i} + \hat{j})$... 4 Edit Delete
9558 $\text{Given below are two statements:}$ $\text{Assertion (A): For a given initial and final position the average velocity is single-valued while the average speed can have many values.}$ $\text{Reason (R): Velocity is a vector quantity and speed is a scalar quantity.}$ 1 103 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
9557 $\text{A person moved from A to B on a circular path as shown in the figure below. If the distance travelled by him is 60 m, then the magnitude of displacement would be:}$ $\text{(given } \cos 135° = -0.7\text{)}$ 1 103 Recommended Questions $42 \text{ m}$, $47 \text{ m}$... 2 Edit Delete
9556 $\text{A particle is moving along a circle such that it completes one revolution in 40 seconds. In 2 minutes 20 seconds, the ratio of } \frac{|displacement|}{distance} \text{ will be:}$ 1 103 Recommended Questions $0$, $\frac{1}{7}$... 4 Edit Delete
9555 $\text{A boy runs on a circular track of radius } R \text{ (in km) with a speed of } \frac{\pi R}{2} \text{ km/h in the clockwise direction for 3 h and then with } \pi R \text{ km/h in the anticlockwise direction for 1 h. The magnitude of his displacement will be:}$ 1 103 Recommended Questions $\frac{\pi R}{2}$, $\frac{R}{\sqrt{2}}$... 4 Edit Delete
9554 $\text{A man starts from point } P \text{ and goes 20 m due East, then 5 m due North, then 35 m due West, and finally 25 m due South. His displacement from point } P \text{ is:}$ 1 103 Recommended Questions $25 \text{ m at } \tan^{-1}\left(\frac{4}{3}\right) \text{ west of south.}$, $85 \text{ m in south-west.}$... 3 Edit Delete
9553 $\text{A vector } \vec{a} \text{ is turned without a change in its length through a small angle } d\theta. \text{ The value of } |\Delta \vec{a}| \text{ and } \Delta a \text{ are, respectively:}$ 1 103 Recommended Questions $0, ad\theta$, $ad\theta, 0$... 2 Edit Delete
9552 $\text{A body starts moving from rest on a horizontal ground such that the position vector of the body with respect to its starting point is given by } \vec{r} = 2t\hat{i} + 3t^2\hat{j}. \text{ The equation of the trajectory of the body is:}$ 1 103 Recommended Questions $y = 1.5x$, $y = 0.75x^2$... 2 Edit Delete
9551 $\text{A particle is moving on a circular path of radius } R. \text{ When the particle moves from point } A \text{ to } B \text{ (angle } \theta \text{), the ratio of the distance to that of the magnitude of the displacement will be:}$ 1 103 Recommended Questions $\frac{\theta}{\sin \frac{\theta}{2}}$, $\frac{\theta}{2 \sin \frac{\theta}{2}}$... 2 Edit Delete
9550 $\text{An aeroplane flies 400 m north and then 300 m west and then flies 1200 m upwards. Its net displacement is:}$ 1 103 Recommended Questions $1200 \text{ m}$, $1300 \text{ m}$... 2 Edit Delete
9549 $\text{Coordinates of a particle as a function of time } t \text{ are } x = 2t, y = 4t. \text{ It can be inferred that the path of the particle will be:}$ 1 103 Recommended Questions $\text{Straight line}$, $\text{Ellipse}$... 1 Edit Delete
9548 $\text{A cat is situated at point } A (0, 3, 4) \text{ and a rat is situated at point } B (5, 3, -8). \text{ The cat is free to move but the rat is always at rest. The minimum distance travelled by the cat to catch the rat is:}$ 1 103 Recommended Questions $5 \text{ unit}$, $12 \text{ unit}$... 3 Edit Delete
9547 \text{A particle starting from the origin } (0, 0) \text{ moves in a straight line in the } (x, y) \text{ plane.} \text{Its coordinates at a later time are } (\sqrt{3}, 3). \text{The path of the particle makes an angle of _______ with the } x\text{-axis.} 1 103 Recommended Questions $30^\circ$, $45^\circ$... 3 Edit Delete
9546 $\text{The displacement of the point } P \text{ on the wheel (see figure) as the wheel completes half revolution while rolling on the ground is:}$ 1 103 Recommended Questions $2\pi r$, $\pi r$... 4 Edit Delete
9545 $\text{A particle starting from the point (1, 2) moves in a straight line in the XY-plane. Its coordinates at a later time are (2, 3). The path of the particle makes with x-axis an angle of:}$ 1 103 Recommended Questions $30°$, $45°$... 2 Edit Delete
9544 $\text{The position of a moving particle at time } t \text{ is } \vec{r} = 3\hat{i} + 4t^2\hat{j} - t^3\hat{k}. \text{ Its displacement during the time interval } t = 1\text{s to } t = 3\text{s will be:}$ 1 103 Recommended Questions $\hat{j} - \hat{k}$, $3\hat{i} - 4\hat{j} - \hat{k}$... 4 Edit Delete
9543 $\text{Three girls skating on a circular ice ground of radius 200 m start from a point } P \text{ on the edge of the ground and reach a point } Q \text{ diametrically opposite to } P \text{ following different paths as shown in the figure. The correct relationship among the magnitude of the displacement vector for three girls will be:}$ 1 103 Recommended Questions $A > B > C$, $C > A > B$... 4 Edit Delete
9542 \text{Consider the motion of the tip of the second hand of a clock. In one minute (assuming } R \text{ to be the length of the second hand), its:} 1 103 Recommended Questions $\text{displacement is } 2\pi R$, $\text{distance covered is } 2R$... 3 Edit Delete
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9221 $\text{Superoxide is formed on heating with an excess of air by:-}$ 2 210 Recommended Questions $\text{Li, Na}$, $\text{Mg, Be}$... 4 Edit Delete
9220 $\text{Sodium hydroxide can be prepared by:}$ 2 210 Recommended Questions $\text{Down's Process.}$, $\text{Castner-Kellner process.}$... 2 Edit Delete
9219 \text{Match the following:} \text{Element} \quad \text{Biological Significance} \text{(a) Sodium} \quad \text{(i) Oxidation of glucose to produce ATP} \text{(b) Potassium} \quad \text{(ii) Helps in transporting sugars and amino acids into the cells} \text{(c) Magnesium} \quad \text{(iii) Helps in the coagulation of blood} \text{(d) Calcium} \quad \text{(iv) Helps in building and strengthening bones} 2 210 Recommended Questions $\text{(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)}$, $\text{(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)}$... 1 Edit Delete
9218 $\text{Ca, on exposure of the moist air, forms a layer on its surface as:}$ 2 210 Recommended Questions $\text{CaCO}_3$, $\text{Ca(OH)}_2$... 1 Edit Delete
9217 $\text{Sodium nitrate decomposes above 800°C and does not give:}$ 2 210 Recommended Questions $\text{N}_2$, $\text{O}_2$... 3 Edit Delete
9216 $\text{The incorrect equation for Solvay process is -}$ 2 210 Recommended Questions $\text{Ca(OH)}_2 + 2\text{NH}_4\text{Cl} \rightarrow \text{NH}_3 + 2\text{H}_2\text{O} + \text{CaCl}_2$, $2\text{NaHCO}_3 \rightarrow \text{Na}_2\text{CO}_3 + \text{CO}_2 + \text{H}_2\text{O}$... 4 Edit Delete
9215 $\text{Alkali metal ions are-}$ 2 210 Recommended Questions $\text{Diamagnetic and coloured.}$, $\text{Diamagnetic and colourless.}$... 2 Edit Delete
9214 $\text{Nitrolim (a nitrogenous fertilizer) is a mixture of-}$ 2 210 Recommended Questions $\text{Calcium carbide and calcium cyanamide.}$, $\text{Calcium oxide and calcium carbide.}$... 3 Edit Delete
9213 $\text{The incorrect statement among the following is-}$ 2 210 Recommended Questions $\text{The milk of magnesia used as an antacid is chemically MgO + MgCl}_2$, $\text{Stability of alkali metal peroxides increases with an increase in atomic number.}$... 1 Edit Delete
9212 $\text{The correct statement among the following regarding CsBr}_3 \text{ is -}$ 2 210 Recommended Questions $\text{It is a covalent compound.}$, $\text{It contains Cs}^{2+} \text{ and Br}^- \text{ ions.}$... 4 Edit Delete
9211 $\text{Calcium hydride can be obtained by heating :}$ 2 210 Recommended Questions $\text{Calcium oxide with hydrogen.}$, $\text{Calcium oxide with hydrogen under pressure.}$... 3 Edit Delete
9210 $\text{A compound that releases CO}_2 \text{ most easily upon heating is?}$ 2 210 Recommended Questions $\text{K}_2\text{CO}_3$, $\text{Na}_2\text{CO}_3$... 3 Edit Delete
9209 $\text{CaCl}_2 \text{ is preferred over NaCl for clearing ice on roads particularly in very cold countries. This is because:}$ 2 210 Recommended Questions $\text{CaCl}_2 \text{ is less soluble in } \text{H}_2\text{O} \text{ than NaCl.}$, $\text{CaCl}_2 \text{ is hygroscopic but NaCl is not.}$... 3 Edit Delete
9208 $\text{The incorrect statement among the following regarding Beryllium is-}$ 2 210 Recommended Questions $\text{It is rendered passive by nitric acid.}$, $\text{It forms Be}_2\text{C}$... 3 Edit Delete
9207 $\text{The byproduct of the Solvay process is:}$ 2 210 Recommended Questions $\text{CO}_2$, $\text{NH}_3$... 3 Edit Delete
9206 $\text{A substance that gives a brick red flame and breaks down on heating giving oxygen and a brown gas is-}$ 2 210 Recommended Questions $\text{Calcium carbonate.}$, $\text{Magnesium carbonate.}$... 4 Edit Delete
9205 $\text{A compound insoluble in acetic acid is -}$ 2 210 Recommended Questions $\text{Calcium oxide.}$, $\text{Calcium carbonate.}$... 3 Edit Delete
9204 $\text{An oxide that does not react with sodium hydroxide is:}$ 2 210 Recommended Questions $\text{B}_2\text{O}_3$, $\text{CaO}$... 2 Edit Delete
9203 $\text{A compound (A) is used in the preparation of washing soda to recover ammonia in Solvay's process. When } \text{CO}_2 \text{ is bubbled through an aqueous solution of (A), the solution turns milky. It is used in whitewashing due to its disinfectant nature. The chemical formula of A is :}$ 2 210 Recommended Questions $\text{Ca(HCO}_3\text{)}_2$, $\text{CaO}$... 3 Edit Delete
9202 $\text{The effect of addition of gypsum to cement is-}$ 2 210 Recommended Questions $\text{It reduces the setting time of cement.}$, $\text{The setting time of cement increases.}$... 2 Edit Delete
9201 $\text{One mole of calcium phosphide upon reacting with water gives:}$ 2 210 Recommended Questions $\text{One mole of the phosphene.}$, $\text{Two moles of phosphoric acid.}$... 3 Edit Delete
9200 $\text{Quick lime is heated with silica to give:}$ 2 210 Recommended Questions $\text{CaSiO}_3$, $\text{CaSiO}_4$... 1 Edit Delete
9199 $\text{The suspension of slaked lime in water is known as -}$ 2 210 Recommended Questions $\text{Limewater.}$, $\text{Quicklime.}$... 3 Edit Delete
9198 $\text{Magnesia can be prepared by -}$ 2 210 Recommended Questions $\text{Burning Mg in air.}$, $\text{Heating hydroxide, nitrate, sulphate or carbonate of magnesium.}$... 4 Edit Delete
9197 $\text{Calcium hydroxide upon reacting with moist chlorine forms-}$ 2 210 Recommended Questions $\text{CaCl}_2$, $\text{Ca}(\text{OCl})_2$... 2 Edit Delete
9196 $\text{A metal [X] heating on nitrogen gas gives [Y]. [Y] on treatment with H}_2\text{O gives a colourless gas which when passed through CuSO}_4\text{ solution gives a blue colour. [Y] is-}$ 2 210 Recommended Questions $\text{Mg}(\text{NO}_3)_2$, $\text{Mg}_3\text{N}_2$... 2 Edit Delete
9195 $\text{Gypsum on heating can change to :}$ 2 210 Recommended Questions $\text{Orthorhombic form.}$, $\text{Plaster of paris.}$... 4 Edit Delete
9194 $\text{The incorrect reaction among the following is:}$ 2 210 Recommended Questions $\text{Na}_2\text{O}_2\text{(s)} + 2\text{H}_2\text{O(l)} \rightarrow 2\text{NaOH(aq)} + \text{H}_2\text{O}_2\text{(g)}$, $2\text{KO}_2\text{(s)} + 2\text{H}_2\text{O(l)} \rightarrow 2\text{KOH(aq)} + \text{H}_2\text{O}_2\text{(aq)} + \text{O}_2\text{(g)}$... 3 Edit Delete
9193 $\text{A Brine solution on electrolysis will not give :}$ 2 210 Recommended Questions $\text{NaOH}$, $\text{Cl}_2$... 4 Edit Delete
9192 $\text{The bleaching action of bleaching powder is due to the formation of :}$ 2 210 Recommended Questions $\text{OCl}^-$, $\text{O}_2$... 1 Edit Delete
9191 $\text{An active ingredient in bleaching powder that aids in the bleaching action is:}$ 2 210 Recommended Questions $\text{Ca}(\text{OCl})_2$, $\text{CaO}_2\text{Cl}$... 1 Edit Delete
9190 $\text{Potassium carbonate cannot be prepared by the Solvay process because -}$ 2 210 Recommended Questions $\text{Potassium carbonate is insoluble in water and does not precipitate out.}$, $\text{Potassium carbonate is soluble in water and does not precipitate out.}$... 2 Edit Delete
9189 $\text{An alkaline earth metal sulphate that has hydration enthalpy higher than the lattice enthalpy is -}$ 2 210 Recommended Questions $\text{CaSO}_4$, $\text{BeSO}_4$... 2 Edit Delete
9188 $\text{A compound X on heating gives a colourless gas. The residue is dissolved in water to obtain Y. Excess } \text{CO}_2 \text{ is bubbled through an aqueous solution of Y, and Z is formed. Z on gentle heating gives back X. The compound X is-}$ 2 210 Recommended Questions $\text{CaCO}_3$, $\text{Na}_2\text{CO}_3$... 1 Edit Delete
9187 $\text{Baking soda or baking powder is:}$ 2 210 Recommended Questions $\text{Washing soda}$, $\text{Caustic soda}$... 4 Edit Delete
9186 $\text{The strongest base among the following is-}$ 2 210 Recommended Questions $\text{Al(OH)}_3$, $\text{Mg(OH)}_2$... 4 Edit Delete
9185 $\text{The correct statement regarding the dissolution of alkali metal in liquid ammonia is -}$ 2 210 Recommended Questions $\text{Ammoniated electron form.}$, $\text{Metal appear red in colour.}$... 1 Edit Delete
9184 $\text{A compound that has higher hydration enthalpy than the lattice enthalpy is:}$ 2 210 Recommended Questions $\text{CaSO}_4$, $\text{BeSO}_4$... 2 Edit Delete
9183 $\text{The number of crystal water in Gypsum, Plaster of Paris and Epsom salt respectively are-}$ 2 210 Recommended Questions $2, 0.5, 7$, $7, 2, 1$... 1 Edit Delete
9182 $\text{The formula of washing soda is:}$ 2 210 Recommended Questions $\text{Na}_2\text{CO}_3$, $\text{Na}_2\text{CO}_3 \cdot \text{H}_2\text{O}$... 4 Edit Delete
9181 $\text{The chemical formula of Plaster of Paris is:}$ 2 210 Recommended Questions $\text{CaSO}_4 \cdot \frac{1}{2}\text{H}_2\text{O}$, $\text{CaSO}_4 \cdot \text{2H}_2\text{O}$... 1 Edit Delete
9180 $\text{The correct statement(s) among the following options is/are:}$ 2 210 Recommended Questions $\text{Sodium metal reacts violently with water.}$, $\text{Sodium metal is heated in a free supply of air to give sodium peroxide.}$... 4 Edit Delete
9179 $\text{Assertion (A): When an alkali metal dissolves in liquid } \text{NH}_3 \text{ the solution acquires different colors.}$ $\text{Reason (R): Paired electrons are present in ammonia.}$ 2 210 Recommended Questions $\text{(A) is true and (R) is the correct explanation of (A).}$, $\text{(A) is true but (R) is not the correct explanation of (A).}$... 4 Edit Delete
9178 $\text{BaO is soluble but } \text{BaSO}_4 \text{ is insoluble in water because :}$ 2 210 Recommended Questions $\text{BaSO}_4 \text{ is unstable.}$, $\text{BaO is unstable.}$... 2 Edit Delete
9177 $\text{HCl was passed through a solution of } \text{CaCl}_2, \text{MgCl}_2, \text{ and NaCl. Compound(s) that get crystallize is/are-}$ 2 210 Recommended Questions $\text{Only NaCl}$, $\text{Only } \text{MgCl}_2$... 1 Edit Delete
9176 $\text{LiF is almost insoluble in water whereas LiCl is soluble in water and acetone both, because of:}$ 2 210 Recommended Questions $\text{Greater covalent character of LiCl as compared to LiF.}$, $\text{Greater hydration energy of LiF as compared to LiCl.}$... 4 Edit Delete
9175 $\text{In case of alkali metal halides, the ionic character increases in the order:}$ 2 210 Recommended Questions $\text{MF} < \text{MCl} < \text{MBr} < \text{MI}$, $\text{MI} < \text{MBr} < \text{MCl} < \text{MF}$... 2 Edit Delete
9174 $\text{The structures of beryllium chloride in solid-state, and vapor state are:}$ 2 210 Recommended Questions $\text{Dimer, and Linear, respectively.}$, $\text{Chain in both.}$... 3 Edit Delete
9173 $\text{The most acidic oxide among the following is -}$ 2 210 Recommended Questions $\text{MgO}$, $\text{BeO}$... 2 Edit Delete
9172 $\text{The correct statement(s) among the following options is/are:}$ 2 210 Recommended Questions $\text{BeO is almost insoluble but } \text{BeSO}_4 \text{ is soluble in water.}$, $\text{BaO is soluble but } \text{BaSO}_4 \text{ is insoluble in water.}$... 4 Edit Delete
9171 $\text{Li}_2\text{CO}_3 \text{ decomposes at a lower temperature because -}$ 2 210 Recommended Questions $\text{Lithium carbonate is not stable to heat.}$, $\text{Lithium carbonate is ionic in nature.}$... 1 Edit Delete
9170 $\text{The cation of alkali metals are found as } \text{M}(\text{H}_2\text{O})_n^+ \text{ in } \text{H}_2\text{O}.$ $\text{The value of 'n' is maximum for -}$ 2 210 Recommended Questions $\text{Na}^+$, $\text{K}^+$... 4 Edit Delete
9169 $\text{The most stable (thermally) carbonate of alkaline earth metal is-}$ 2 210 Recommended Questions $\text{MgCO}_3$, $\text{CaCO}_3$... 4 Edit Delete
9168 $\text{The incorrect statement among the following is -}$ 2 210 Recommended Questions $\text{Li}^+ \text{ has minimum degree of hydration among alkali metal cations.}$, $\text{The oxidation state of K in } \text{KO}_2 \text{ is } +1$... 1 Edit Delete
9167 $\text{Among the following the least thermally stable carbonate is :}$ 2 210 Recommended Questions $\text{K}_2\text{CO}_3$, $\text{Na}_2\text{CO}_3$... 4 Edit Delete
9166 $\text{Be and Mg did not give flame colour because:}$ 2 210 Recommended Questions $\text{Energy released by excited electron falls in visible region.}$, $\text{Energy released by excited electron does not fall in visible region}$... 2 Edit Delete
9165 $\text{The incorrect statement among the following is-}$ 2 210 Recommended Questions $\text{Sodium metal is used in organic qualitative analysis.}$, $\text{Sodium carbonate is soluble in water and it is used in inorganic qualitative analysis.}$... 3 Edit Delete
9164 $\text{A molecule among the following that has the highest hydration energy is -}$ 2 210 Recommended Questions $\text{MgCl}_2$, $\text{CaCl}_2$... 1 Edit Delete
9163 $\text{A molecule among the following that has the highest hydration energy is -}$ 2 210 Recommended Questions $\text{MgCl}_2$, $\text{CaCl}_2$... 2 Edit Delete
9162 $\text{An amphoteric hydroxide among the following is :}$ 2 210 Recommended Questions $\text{Be}(\text{OH})_2$, $\text{Sr}(\text{OH})_2$... 1 Edit Delete
9161 $\text{The alkali metal that gives hydrated salts is -}$ 2 210 Recommended Questions $\text{Li}$, $\text{Na}$... 1 Edit Delete
9160 $\text{Alkali and alkaline earth metals cannot be obtained by chemical reduction method because they are the strongest :}$ 2 210 Recommended Questions $\text{Oxidizing agents.}$, $\text{Reducing agents.}$... 2 Edit Delete
9159 $\text{Lithium shows a diagonal relationship with :}$ 2 210 Recommended Questions $\text{Sodium}$, $\text{Magnesium}$... 2 Edit Delete
9158 $(\text{NH}_4)_2 \text{Cr}_2 \text{O}_7 \text{ on heating (below 200 degrees celsius) liberates a gas. The same gas will be obtained below 600 degrees celsius by :}$ 2 210 Recommended Questions $\text{Heating }\text{NH}_4 \text{NO}_2$, $\text{Heating }\text{NH}_4 \text{NO}_3$... 1 Edit Delete
9157 $\text{In the Solvay process of manufacturing sodium carbonate, the raw materials used are:}$ 2 210 Recommended Questions $\text{Aqueous NaOH, NH}_3 \text{ and CO}_2$, $\text{Molten NaOH, NH}_3 \text{ and CO}$... 4 Edit Delete
9156 $\text{The sequence of ionic mobility in an aqueous solution is:}$ 2 210 Recommended Questions $\text{K}^+ > \text{Na}^+ > \text{Rb}^+ > \text{Cs}^+$, $\text{Cs}^+ > \text{Rb}^+ > \text{K}^+ > \text{Na}^+$... 2 Edit Delete
9155 $\text{The fire extinguisher contains NaHCO}_3 \text{ and the compound (X). The compound (X) maybe -}$ 2 210 Recommended Questions $\text{CH}_3\text{COOH}$, $\text{NaOH}$... 1 Edit Delete
9154 $\text{The pair of compounds, that cannot exist together in a solution is -}$ 2 210 Recommended Questions $\text{NaHCO}_3 \text{ and NaOH}$, $\text{Na}_2\text{CO}_3 \text{ and NaOH}$... 1 Edit Delete
9153 $\text{Out of Be, Mg, Ca, Sr and Ba,}$ $\text{Total number of metal whose nitrates are decomposed according to the following reaction are:}$ $2\text{M(NO}_3\text{)}_2 \xrightarrow{\Delta} \text{Residue} + 4\text{NO}_2 + \text{O}_2$ 2 210 Recommended Questions $5$, $4$... 1 Edit Delete
9152 $\text{The incorrect statement among the following is -}$ 2 210 Recommended Questions $\text{The thermal stability of nitrates of groups 1 and 2 increases down the group.}$, $\text{Nitrates of both groups 1 and 2 are insoluble in water.}$... 2 Edit Delete
9151 $\text{An ion that has the largest size among the following is :}$ 2 210 Recommended Questions $\text{Li}^+\text{(aq)}$, $\text{Cs}^+\text{(aq)}$... 1 Edit Delete
9150 $\text{The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -}$ 2 210 Recommended Questions $\text{Potassium is solid and sodium distils off at 850°C.}$, $\text{Potassium is more volatile and distils off thus shifting the reaction forward.}$... 2 Edit Delete
9149 $\text{The correct diagonal relation of Li and Mg among the following is -}$ 2 210 Recommended Questions $\text{Both form solid bicarbonates.}$, $\text{Their oxides are less soluble in water.}$... 2 Edit Delete
9148 $\text{The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of } \text{CO}_2 \text{ is bubbled through an aqueous solution of B. C is solid. Solid C on gentle heating gives back A. The compound A is:}$ 2 210 Recommended Questions $\text{Na}_2\text{CO}_3$, $\text{K}_2\text{CO}_3$... 4 Edit Delete
9147 $\text{KO}_2 \text{ is used in oxygen cylinders in space aircraft and submarines because it :}$ 2 210 Recommended Questions $\text{Absorbs } \text{CO}_2 \text{ and increases } \text{O}_2 \text{ content.}$, $\text{Eliminates moisture.}$... 1 Edit Delete
9146 $\text{A compound X reacts with } \text{K}_2\text{CrO}_4 \text{ and dilute HCl to produce a yellow precipitate and pungent smelling gas.}$ $\text{If X gives a green flame test, then X is:}$ 2 210 Recommended Questions $\text{MgSO}_4$, $\text{BaS}_2\text{O}_3$... 2 Edit Delete
9145 $\text{The correct order of increasing thermal stability of } \text{K}_2\text{CO}_3\text{, } \text{MgCO}_3\text{, } \text{CaCO}_3 \text{ and } \text{BeCO}_3 \text{ is:}$ 2 210 Recommended Questions $\text{BeCO}_3 < \text{MgCO}_3 < \text{K}_2\text{CO}_3 < \text{CaCO}_3$, $\text{BeCO}_3 < \text{MgCO}_3 < \text{CaCO}_3 < \text{K}_2\text{CO}_3$... 2 Edit Delete
9144 $\text{Sodium is less reactive than potassium because-}$ 2 210 Recommended Questions $\text{Potassium loses electron easily.}$, $\text{Sodium loses electron easily.}$... 1 Edit Delete
9143 $\text{The correct statement(s) about the structure of } \text{BeCl}_2 \text{ is -}$ $\text{a. } \text{BeCl}_2 \text{ (solid)- exists as polymer.}$ $\text{b. } \text{BeCl}_2 \text{ (vapour)- exists as chlorobridged dimer.}$ $\text{c. } \text{BeCl}_2 \text{ has bent structure in the vapour phase.}$ 2 210 Recommended Questions $\text{a}$, $\text{a and b}$... 2 Edit Delete
9142 $\text{The oxidation state of sodium in } \text{Na}_2\text{O}_2 \text{ is -}$ 2 210 Recommended Questions $+1$, $-1$... 1 Edit Delete
9141 $\text{Lithium salts are generally hydrated because they have:}$ 2 210 Recommended Questions $\text{High polarizing power.}$, $\text{High ionization enthalpy.}$... 1 Edit Delete
9140 $\text{Sodium reacts with water less vigorously than potassium because-}$ 2 210 Recommended Questions $\text{It has a higher atomic weight.}$, $\text{It is less electropositive.}$... 2 Edit Delete
9139 $\text{Sodium in liquid ammonia is used as:}$ 2 210 Recommended Questions $\text{Oxidizing agent}$, $\text{Reducing agent}$... 2 Edit Delete
9138 $\text{Solubility of alkaline earth metal sulphates in water decreases in the sequence:}$ 2 210 Recommended Questions $\text{Mg} > \text{Ca} > \text{Sr} > \text{Ba}$, $\text{Ca} > \text{Sr} > \text{Ba} > \text{Mg}$... 1 Edit Delete
9137 $\text{The characteristic of alkaline earth metals is that-}$ 2 210 Recommended Questions $\text{Their general oxidation state is +1}$, $\text{They have a smaller size than alkali metals.}$... 2 Edit Delete
9136 $\text{A blue coloured solution of an alkali metal in liq NH}_3 \text{ is due to the presence of -}$ 2 210 Recommended Questions $\text{M}^- \text{ atoms}$, $\text{M}^+ \text{ ions}$... 4 Edit Delete
9135 $\text{In the reaction } \text{M} + \text{O}_2 \rightarrow \text{MO}_2 \text{ (superoxide) the metal is -}$ 2 210 Recommended Questions $\text{Li}$, $\text{Na}$... 3 Edit Delete
9134 $\text{The correct order of thermal stability of carbonates of Group 2 elements is-}$ 2 210 Recommended Questions $\text{BeCO}_3 < \text{MgCO}_3 < \text{CaCO}_3 < \text{SrCO}_3 < \text{BaCO}_3$, $\text{BeCO}_3 < \text{MgCO}_3 < \text{BaCO}_3 < \text{SrCO}_3 < \text{CaCO}_3$... 1 Edit Delete
9133 $\text{Alkali metals are not found in nature in their elemental state because they are:}$ 2 210 Recommended Questions $\text{Less reactive due to low ionization energies.}$, $\text{Highly reactive due to low ionization energies.}$... 2 Edit Delete
9132 $\text{An alkali metals that forms only the normal oxide M}_2\text{O on heating in air is-}$ 2 210 Recommended Questions $\text{Rb}$, $\text{K}$... 3 Edit Delete
9131 $\text{An alkali metal that reacts with nitrogen to form nitride is -}$ 2 210 Recommended Questions $\text{Li}$, $\text{Na}$... 1 Edit Delete
9130 $\text{The incorrect statement among the following is-}$ 2 210 Recommended Questions $\text{Alkali metals are more electropositive than alkaline earth metals.}$, $\text{Alkaline earth metals are denser and harder than alkali metals.}$... 4 Edit Delete
9129 $\text{Common table salt becomes moist and does not pour easily in rainy season because:}$ 2 210 Recommended Questions $\text{It contains magnesium chloride.}$, $\text{It contains magnesium carbonate.}$... 1 Edit Delete
9128 $\text{The incorrect statement regarding Be(II group) is -}$ 2 210 Recommended Questions $\text{It forms an ionic carbide.}$, $\text{Its carbonate decomposes on heating.}$... 4 Edit Delete
9127 $\text{A paramagnetic compound among the following is -}$ 2 210 Recommended Questions $\text{K}_2\text{O}$, $\text{K}_2\text{O}_2$... 4 Edit Delete
9126 $\text{The strongest reducing agent among the following is:}$ 2 210 Recommended Questions $\text{K}$, $\text{Na}$... 1 Edit Delete
9125 $\text{Sodium does not form Na}^{2+} \text{ because:}$ 2 210 Recommended Questions $\text{Sodium contains only one electron in its outermost shell}$, $\text{First ionization potential is small and the difference in first and second ionization potential is very large.}$... 2 Edit Delete
9124 $\text{Alkali metals are characterised by:}$ 2 210 Recommended Questions $\text{Good conductors of heat and electricity.}$, $\text{High melting points.}$... 1 Edit Delete
9123 $\text{The largest value of } K_{sp} \text{ among the following is -}$ 2 210 Recommended Questions $\text{BeSO}_4$, $\text{MgSO}_4$... 1 Edit Delete
9122 $\text{All group-2 metals dissolve in liquid ammonia to produce a bright blue colour. The colour is due to-}$ 2 210 Recommended Questions $\text{A change in the structure of ammonia.}$, $\text{d-d transition.}$... 3 Edit Delete
9121 $\text{Alkali metal with the lowest melting point is -}$ 2 210 Recommended Questions $\text{Na}$, $\text{K}$... 4 Edit Delete
9120 $\text{The incorrect statement among the following is-}$ 2 210 Recommended Questions $\text{Ionisation enthalpy of alkaline earth metals is higher than alkali metals.}$, $\text{Alkaline earth metal oxides are more basic than alkali metal oxides.}$... 2 Edit Delete
9119 $\text{The incorrect statement among the following is :}$ 2 210 Recommended Questions $\text{The atomic radius of Na is greater than that of Mg.}$, $\text{Density of K is more than Na.}$... 2 Edit Delete
9118 $\text{Beryllium and Magnesium do not impart color in flame test, because -}$ 2 210 Recommended Questions $\text{Be and Mg have high Ionization Energy.}$, $\text{Be and Mg have low Ionization Energy.}$... 1 Edit Delete
9117 $\text{Property of the alkaline earth metals that increases with their atomic number is -}$ 2 210 Recommended Questions $\text{Solubility of their hydroxides in water.}$, $\text{Solubility of their sulphates in water.}$... 1 Edit Delete
9116 $\text{Beryllium and Magnesium do not impart color in flame test, because -}$ 2 210 Recommended Questions $\text{Be and Mg have high Ionization Energy.}$, $\text{Be and Mg have low Ionization Energy.}$... 2 Edit Delete
9115 $\text{The correct relation about the density of Na and K is}$ 2 210 Recommended Questions $\text{Na} > \text{K}$, $\text{Na} = \text{K}$... 1 Edit Delete
9114 $\text{The incorrect statement about alkali metals is -}$ 2 210 Recommended Questions $\text{They have low density.}$, $\text{They have high ionization enthalpy.}$... 2 Edit Delete
9113 $\text{The incorrect statement among the following regarding alkaline earth metals is :}$ 2 210 Recommended Questions $\text{Alkaline earth metals are silvery-white, lustrous, and harder than alkali metals.}$, $\text{Only Ca, Sr, Mg, and Ba give a flame test.}$... 2 Edit Delete
9112 $\text{The most basic compound among the following is -}$ 2 210 Recommended Questions $\text{RbOH}$, $\text{KOH}$... 2 Edit Delete
9111 $\text{The most basic compound among the following is -}$ 2 210 Recommended Questions $\text{RbOH}$, $\text{KOH}$... 1 Edit Delete
9110 $\text{A compound soluble in pyridine is:-}$ 2 210 Recommended Questions $\text{LiCl}$, $\text{CsCl}$... 1 Edit Delete
9109 $\text{The strongest factor responsible for reducing action of Li metal in an aqueous solution is :}$ 2 210 Recommended Questions $\text{Sublimation enthalpy .}$, $\text{Ionisation enthalpy.}$... 3 Edit Delete
9108 $\text{Lithium has the minimum tendency to form } \text{Li}^+ \text{ ion. The aqueous solution of lithium is the:}$ 2 210 Recommended Questions $\text{Strongest reducing agent.}$, $\text{Poorest reducing agent.}$... 1 Edit Delete
9107 $\text{The reason for a lower basicity of hydroxides of alkaline earth metals than alkali metals is :}$ 2 210 Recommended Questions $\text{Alkali metals form ionic compounds.}$, $\text{The bond strength of oxygen is more for alkali metals.}$... 3 Edit Delete
9106 $\text{The incorrect statement among the following regarding Lithium is that-}$ 2 210 Recommended Questions $\text{The hydroxide, carbonate and nitrate decompose to give the oxide on heating.}$, $\text{It is the most electronegative element of group IA.}$... 4 Edit Delete
9105 $\text{The polarising power of Mg is close to that of –}$ 2 210 Recommended Questions $\text{Na}$, $\text{Cs}$... 3 Edit Delete
9104 $\text{A colourless salt among the following that gives violet colour to Bunsen flame is -}$ 2 210 Recommended Questions $\text{Na}_2\text{CO}_3$, $\text{K}_2\text{CO}_3$... 2 Edit Delete
9103 $\text{Potassium is kept-}$ 2 210 Recommended Questions $\text{Under cold water.}$, $\text{In ammonia.}$... 4 Edit Delete
9102 $\text{An amphoteric oxide among the following is-}$ 2 210 Recommended Questions $\text{CaO}$, $\text{SrO}$... 3 Edit Delete
9101 $\text{The property of alkali metals that increases with increasing atomic number is -}$ 2 210 Recommended Questions $\text{First ionization energy.}$, $\text{Electronegativity.}$... 4 Edit Delete
9070 130 1 102 Recommended Questions 1, 2... 4 Edit Delete
9069 129 1 102 Recommended Questions 1, 2... 4 Edit Delete
9068 128 1 102 Recommended Questions 1, 2... 1 Edit Delete
9067 127 1 102 Recommended Questions 1, 2... 4 Edit Delete
9066 126 1 102 Recommended Questions 1, 2... 3 Edit Delete
9065 125 1 102 Recommended Questions 1, 2... 1 Edit Delete
9064 124 1 102 Recommended Questions 1, 2... 1 Edit Delete
9063 123 1 102 Recommended Questions 1, 2... 1 Edit Delete
9062 122 1 102 Recommended Questions 1, 2... 1 Edit Delete
9061 121 1 102 Recommended Questions 1, 2... 1 Edit Delete
9060 120 1 102 Recommended Questions 1, 2... 1 Edit Delete
9059 119 1 102 Recommended Questions 1, 2... 4 Edit Delete
9058 118 1 102 Recommended Questions 1, 2... 3 Edit Delete
9057 117 1 102 Recommended Questions 1, 2... 4 Edit Delete
9056 116 1 102 Recommended Questions 1, 2... 2 Edit Delete
9055 115 1 102 Recommended Questions 1, 2... 3 Edit Delete
9054 114 1 102 Recommended Questions 1, 2... 3 Edit Delete
9053 113 1 102 Recommended Questions 1, 2... 1 Edit Delete
9052 112 1 102 Recommended Questions 1, 2... 4 Edit Delete
9051 111 1 102 Recommended Questions 1, 2... 2 Edit Delete
9050 110 1 102 Recommended Questions 1, 2... 4 Edit Delete
9049 109 1 102 Recommended Questions 1, 2... 1 Edit Delete
9048 108 1 102 Recommended Questions 1, 2... 4 Edit Delete
9047 107 1 102 Recommended Questions 1, 2... 1 Edit Delete
9046 106 1 102 Recommended Questions 1, 2... 1 Edit Delete
9045 105 1 102 Recommended Questions 1, 2... 3 Edit Delete
9044 104 1 102 Recommended Questions 1, 2... 3 Edit Delete
9043 103 1 102 Recommended Questions 1, 2... 4 Edit Delete
9042 102 1 102 Recommended Questions 1, 2... 4 Edit Delete
9041 101 1 102 Recommended Questions 1, 2... 1 Edit Delete
9040 100 1 102 Recommended Questions 1, 2... 1 Edit Delete
8953 13 1 102 Recommended Questions 1, 2... 3 Edit Delete
8952 12 1 102 Recommended Questions 1, 2... 2 Edit Delete
8951 11 1 102 Recommended Questions 1, 2... 2 Edit Delete
8950 10 1 102 Recommended Questions 1, 2... 2 Edit Delete
8941 1 1 102 Recommended Questions 1, 2... 3 Edit Delete
8940 $\text{Which of the following four statements is false?}$ 1 102 Recommended Questions $\text{A body can have zero velocity and still be accelerated.}$, $\text{A body can have a constant velocity and still have a varying speed.}$... 2 Edit Delete
8939 $\text{A body in one-dimensional motion has zero speed at an instant. At that instant, it must have:}$ 1 102 Recommended Questions $\text{zero velocity.}$, $\text{zero acceleration.}$... 1 Edit Delete
8938 $\text{The displacement } (x) \text{ of a point moving in a straight line is given by:}$ $x = 8t^2 - 4t. \text{ Then the velocity of the particle is zero at:}$ 1 102 Recommended Questions $0.4 \text{ s}$, $0.25 \text{ s}$... 2 Edit Delete
8937 $\text{A particle moving in unidirectional motion travels half of the total distance with a constant speed of 15 m/s.}$ $\text{Now the first half of the remaining journey time, it travels at 10 m/s, and the second half of the remaining journey time, it travels at 5 m/s.}$ $\text{The average speed of the particle is:}$ 1 102 Recommended Questions $12 \text{ m/s}$, $10 \text{ m/s}$... 2 Edit Delete
8936 $\text{A ball is bouncing elastically with a speed of 1 m/s between the walls of a railway compartment of size 10 m in a direction perpendicular to the walls. The train is moving at a constant velocity of 10 m/s parallel to the direction of motion of the ball. As seen from the ground:}$ $\text{(a) the direction of motion of the ball changes every 10 sec.}$ $\text{(b) the speed of the ball changes every 10 sec.}$ $\text{(c) the average speed of the ball over any 20 sec intervals is fixed.}$ $\text{(d) the acceleration of the ball is the same as from the train.}$ $\text{Choose the correct option:}$ 1 102 Recommended Questions $\text{(a), (c), (d)}$, $\text{(a), (c)}$... 3 Edit Delete
8935 $\text{An elevator car, whose floor to ceiling distance is equal to 2.7 m, starts ascending with constant acceleration of 1.2 ms}^{-2}\text{. 2 sec after the start, a bolt begins falling from the ceiling of the car. The free fall time of the bolt is:}$ 1 102 Recommended Questions $\sqrt{0.54} \text{ s}$, $\sqrt{6} \text{ s}$... 3 Edit Delete
8934 $\text{A ball is thrown vertically upwards with a velocity } u \text{ with respect to ground from a balloon descending with velocity } v \text{ with respect to ground. The ball will pass the balloon after time:}$ 1 102 Recommended Questions $\frac{u-v}{2g}$, $\frac{u+v}{2g}$... 4 Edit Delete
8933 $\text{A person standing on the floor of an elevator drops a coin. The coin reaches the floor in time } t_1\text{, if the elevator is moving uniformly and time } t_2\text{, if the elevator is stationary. Then:}$ 1 102 Recommended Questions $t_1 < t_2 \text{ or } t_1 > t_2 \text{ depending upon whether the lift is going up or down.}$, $t_1 < t_2$... 4 Edit Delete
8932 $\text{A stone is dropped from a height } h\text{. Simultaneously, another stone is thrown up from the ground which reaches a height } 4h\text{. The two stones cross each other after time:}$ 1 102 Recommended Questions $\sqrt{\frac{h}{8g}}$, $\sqrt{8gh}$... 1 Edit Delete
8931 $\text{A jet airplane travelling at the speed of 500 km/h ejects its products of combustion at the speed of 1500 km/h relative to the jet plane. What is the speed of the latter with respect to an observer on the ground?}$ 1 102 Recommended Questions $1000 \text{ km/h}$, $500 \text{ km/h}$... 1 Edit Delete
8930 $\text{Two cars } A \text{ and } B \text{ are travelling in the same direction with velocities } v_1 \text{ and } v_2 (v_1 > v_2)\text{. When the car } A \text{ is at a distance } d \text{ behind the car } B\text{, the driver of the car } A \text{ applied the brake producing uniform retardation } a\text{. There will be no collision when:}$ 1 102 Recommended Questions $d < \frac{(v_1-v_2)^2}{2a}$, $d < \frac{v_1^2-v_2^2}{2a}$... 3 Edit Delete
8929 $\text{Suppose you are riding a bike with a speed of 20 m/s due east relative to a person } A \text{ who is walking on the ground towards the east. If your friend } B \text{ walking on the ground due west measures your speed as 30 m/s due east, then the relative velocity between two reference frames } A \text{ and } B \text{ is:}$ 1 102 Recommended Questions $\text{the velocity of } A \text{ with respect to } B \text{ is 5 m/s towards the east.}$, $\text{the velocity of } A \text{ with respect to } B \text{ is 5 m/s towards the west.}$... 3 Edit Delete
8928 $\text{A boy falls from a building of height 320 m. After 5 seconds, superman jumps downward with initial speed } u \text{ such that the boy can be saved. The minimum value of } u \text{ is: (assume } g = 10 \text{ m/s}^2\text{)}$ 1 102 Recommended Questions $95.1 \text{ m/s}$, $98.3 \text{ m/s}$... 3 Edit Delete
8927 $\text{A car } A \text{ is traveling on a straight level road at a uniform speed of 60 km/h. It is followed by another car } B \text{ which is moving at a speed of 70 km/h. When the distance between them is 2.5 km, car } B \text{ is given a deceleration of 20 km/h}^2\text{. After how much time will car } B \text{ catch up with car } A\text{?}$ 1 102 Recommended Questions $1 \text{ hr}$, $\frac{1}{2} \text{ hr}$... 2 Edit Delete
8926 $\text{Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time } t_1\text{. On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time } t_2\text{. The time taken by her to walk upon the moving escalator will be:}$ 1 102 Recommended Questions $\frac{t_1 t_2}{t_2 - t_1}$, $\frac{t_1 t_2}{t_2 + t_1}$... 2 Edit Delete
8925 $\text{An elevator whose floor-to-ceiling height is 12 meters, moves upward with an acceleration of 2.2 m/s}^2\text{. After 1.5 s since starting, a bolt falls from its ceiling. The time taken by the bolt to reach the floor is:}$ 1 102 Recommended Questions $1 \text{ s}$, $2 \text{ s}$... 3 Edit Delete
8924 $\text{Two trains each of length 100 m are moving parallel towards each other at speeds 72 km/h and 36 km/h respectively. In how much time will they cross each other?}$ 1 102 Recommended Questions $4.5 \text{ s}$, $6.67 \text{ s}$... 2 Edit Delete
8923 $\text{A bus is moving with a speed of 10 ms}^{-1} \text{ on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist, with what minimum speed should the scooterist chase the bus?}$ 1 102 Recommended Questions $20 \text{ ms}^{-1}$, $40 \text{ ms}^{-1}$... 1 Edit Delete
8922 $\text{Two cars are moving in the same direction with the same speed 30 km/hr. They are separated by a distance of 5 km. The speed of a car moving in the opposite direction, if it meets these two cars at an interval of 4 minutes, will be:}$ 1 102 Recommended Questions $40 \text{ km/hr}$, $45 \text{ km/hr}$... 2 Edit Delete
8921 $\text{The distance between two particles is decreasing at the rate of 6 m/sec when they are moving in the opposite directions. If these particles travel with the same initial speeds and in the same direction, then the separation increases at the rate of 4 m/sec. It can be concluded that particles' speeds could be:}$ 1 102 Recommended Questions $5 \text{ m/sec, } 1 \text{ m/sec}$, $4 \text{ m/sec, } 1 \text{ m/sec}$... 1 Edit Delete
8920 $\text{Two trains, each 50 m long, are travelling in the opposite direction with velocities 10 m/s and 15 m/s. The time of crossing is:}$ 1 102 Recommended Questions $10 \text{ sec}$, $4 \text{ sec}$... 2 Edit Delete
8919 $\text{Two balls are projected upward simultaneously with speeds of } 40 \text{ m/s and } 60 \text{ m/s. The relative position } (x) \text{ of the second ball with respect to the first ball at time } t = 5 \text{ s will be: (neglect air resistance)}$ 1 102 Recommended Questions $20 \text{ m}$, $80 \text{ m}$... 3 Edit Delete
8918 $\text{A thief is running away on a straight road in a jeep moving with a speed of } 9 \text{ m/s. A policeman chases him on a motorcycle moving at a speed of } 10 \text{ m/s. If the instantaneous separation of the jeep from the motorcycle is } 100 \text{ m, how long will it take for the policeman to catch the thief?}$ 1 102 Recommended Questions $1 \text{ s}$, $19 \text{ s}$... 4 Edit Delete
8917 $\text{In the following displacement } (x) \text{ versus time } (t) \text{ graph, at which points } P, Q \text{ and } R \text{ will the object's speed be increasing?}$ 1 102 Recommended Questions $R \text{ only}$, $P \text{ only}$... 1 Edit Delete
8916 $\text{Two stones are thrown vertically up simultaneously with different velocities. Which of the following graphs represents the relative separation } (\Delta y) \text{ between them as a function of time } (t)?$ 1 102 Recommended Questions $\text{Graph 1: Triangular shape - linear increase then linear decrease}$, $\text{Graph 2: Parabolic shape opening downward}$... 4 Edit Delete
8915 $\text{For the following acceleration versus time graph, the corresponding velocity versus displacement graph is:}$ 1 102 Recommended Questions $\text{Graph 1: Linear relationship between velocity and displacement}$, $\text{Graph 2: Exponential-like curve starting flat then rising steeply}$... 3 Edit Delete
8914 $\text{A particle is moving along the positive } x\text{-axis with some initial velocity. The acceleration-time graphs are shown. In which case the velocity of the particle will increase for the entire time between } t_1 \text{ and } t_2?$ 1 102 Recommended Questions $\text{only in (II)}$, $\text{in (I) and (III)}$... 4 Edit Delete
8913 $\text{Among the four graphs shown in the figure, there is only one graph for which average velocity over the time interval } (0, T) \text{ can vanish for a suitably chosen } T. \text{ Select the graph.}$ 1 102 Recommended Questions $\text{Graph 1: Exponentially decreasing curve}$, $\text{Graph 2: Curve that rises then falls back down}$... 2 Edit Delete
8912 $\text{The graph below shows position as a function of time for two trains running on parallel tracks. Which of the following statements is true?}$ 1 102 Recommended Questions $\text{At time } t_B \text{ both the trains have the same velocity}$, $\text{Both the trains have the same velocity at some time after } t_B$... 3 Edit Delete
8911 $\text{The graph between the displacement } x \text{ and time } t \text{ for a particle moving in a straight line is shown in the figure. During the interval OA, AB, BC and CD the acceleration of the particle is:}$ 1 102 Recommended Questions $\text{OA: +, AB: 0, BC: +, CD: +}$, $\text{OA: -, AB: 0, BC: +, CD: 0}$... 2 Edit Delete
8910 $\text{A ball is dropped vertically from a height } h \text{ above the ground. It hits the ground and bounces up vertically to a height of } \frac{h}{2}. \text{ Neglecting subsequent motion and air resistance, its velocity } v \text{ varies with the height } h \text{ as: [Take vertically upwards direction as positive.]}$ 1 102 Recommended Questions $\text{Graph 1: Curved path showing downward then upward motion}$, $\text{Graph 2: Semi-circular path}$... 1 Edit Delete
8909 $\text{The variation of quantity } A \text{ with quantity } B \text{ is plotted in the given figure which describes the motion of a particle in a straight line.}$ $\text{Consider the following statements:}$ $\text{(a) Quantity } B \text{ may represent time.}$ $\text{(b) Quantity } A \text{ is velocity if motion is uniform.}$ $\text{(c) Quantity } A \text{ is displacement if motion is uniform.}$ $\text{(d) Quantity } A \text{ is velocity if motion is uniformly accelerated.}$ $\text{Select the correct option:}$ 1 102 Recommended Questions $\text{(a), (b), (c)}$, $\text{(b), (c), (d)}$... 3 Edit Delete
8908 $\text{Acceleration-time graph of a body is shown.}$ $\text{The corresponding velocity-time graph of the same body is:}$ 1 102 Recommended Questions $\text{Graph showing velocity increasing linearly, then remaining constant, then decreasing linearly}$, $\text{Graph showing velocity decreasing linearly, then remaining constant, then increasing linearly}$... 3 Edit Delete
8907 $\text{Which graph represents a uniformly accelerated motion?}$ 1 102 Recommended Questions $\text{Displacement-time graph showing a parabolic curve (concave up)}$, $\text{Displacement-time graph showing a curved line (concave down)}$... 1 Edit Delete
8906 $\text{The graph of displacement time is given below.}$ $\text{Its corresponding velocity-time graph will be:}$ 1 102 Recommended Questions $\text{Velocity-time graph showing a straight line decreasing from positive to negative}$, $\text{Velocity-time graph showing a parabolic curve opening upward}$... 1 Edit Delete
8905 $\text{The displacement-time (s-t) graphs of two moving particles A and B make angles of 30° and 45° with the x-axis as shown in the figure. The ratio of their respective velocity } \left(\frac{v_A}{v_B}\right) \text{ is:}$ 1 102 Recommended Questions $1 : \sqrt{3}$, $\sqrt{3} : 1$... 1 Edit Delete
8904 $\text{A lift is going up. The variation in the speed of the lift is as given in the graph. What is the height to which the lift takes the passengers?}$ 1 102 Recommended Questions $3.6 \text{ m}$, $28.8 \text{ m}$... 3 Edit Delete
8903 $\text{A ball is thrown vertically upwards. Then the velocity-time (v-t) graph will be:}$ 1 102 Recommended Questions $\text{A straight line starting from positive velocity and decreasing linearly to negative velocity}$, $\text{A triangular shape starting at zero, increasing to a peak, then decreasing back to zero}$... 1 Edit Delete
8902 $\text{A particle starts from rest. Its acceleration (a) versus time (t) is as shown in the figure. The maximum speed of the particle will be:}$ 1 102 Recommended Questions $110 \text{ m/s}$, $55 \text{ m/s}$... 2 Edit Delete
8901 $\text{A particle shows distance-time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point:}$ 1 102 Recommended Questions $\text{B}$, $\text{C}$... 2 Edit Delete
8900 $\text{The position (x) of a particle in a straight line motion is given by } x = 2 + 10t - 5t^2 \text{ m. Its velocity (v) is best represented by?}$ 1 102 Recommended Questions $\text{Linear graph starting at 10 m/s at t=0, decreasing to 0 m/s at t=1s}$, $\text{Linear graph starting at 20 m/s, decreasing to 5 m/s at t=1s}$... 1 Edit Delete
8899 $\text{The velocity-time } (v-t) \text{ graph of a body moving in a straight line is shown in the figure. The displacement and distance travelled by the body in 6 s are, respectively:}$ $\text{The graph shows:}$ $\text{- From } t = 0 \text{ to } t = 2\text{s: } v = 4\text{ m/s}$ $\text{- From } t = 2 \text{ to } t = 4\text{s: } v = -2\text{ m/s}$ $\text{- From } t = 4 \text{ to } t = 6\text{s: } v = 2\text{ m/s}$ 1 102 Recommended Questions $8\text{ m, } 16\text{ m}$, $16\text{ m, } 8\text{ m}$... 1 Edit Delete
8898 $\text{Which one of the following displacement-time graph represents two moving objects } P \text{ and } Q \text{ with zero relative velocity?}$ 1 102 Recommended Questions $\text{Graph 1: Object } Q \text{ has a steeper slope than object } P \text{ on the displacement-time graph}$, $\text{Graph 2: Objects } P \text{ and } Q \text{ have parallel lines with the same slope on the displacement-time graph}$... 2 Edit Delete
8897 $\text{In the following graph, the distance travelled by the body in metres is:}$ $\text{The velocity-time graph shows:}$ $\text{- From } t = 0 \text{ to } t = 10\text{s: velocity increases linearly from 0 to 10 m/s}$ $\text{- From } t = 10 \text{ to } t = 20\text{s: velocity remains constant at 10 m/s}$ $\text{- From } t = 20 \text{ to } t = 30\text{s: velocity decreases linearly from 10 to 0 m/s}$ 1 102 Recommended Questions $200$, $250$... 1 Edit Delete
8896 $\text{Which of the following velocity-time graphs shows a realistic situation for a body in motion?}$ 1 102 Recommended Questions $\text{Graph 1: A curved loop that intersects itself, showing multiple velocity values for some time instants}$, $\text{Graph 2: A continuous smooth curve that represents a mathematical function with one velocity value for each time instant}$... 2 Edit Delete
8895 $\text{The displacement time graph of a moving particle is shown in the figure below. The instantaneous velocity of the particle is negative at the point:}$ $\text{The graph shows a curved line with labeled points C, D, E, and F, where the curve rises to a maximum at D, then decreases through E, and rises again toward F.}$ 1 102 Recommended Questions $D$, $F$... 4 Edit Delete
8894 $\text{The initial velocity of a particle is } u \text{ (at } t = 0\text{) and the acceleration } f \text{ is given by } at\text{. Which of the following relation is valid?}$ 1 102 Recommended Questions $v = u + at^2$, $v = u + \frac{at^2}{2}$... 2 Edit Delete
8893 $\text{A body is thrown vertically upwards. If the air resistance is to be taken into account, then the time during which the body rises is:}$ 1 102 Recommended Questions $\text{Equal to the time of fall.}$, $\text{Less than the time of fall.}$... 2 Edit Delete
8892 $\text{A point moves in a straight line under the retardation } av^2\text{. If the initial velocity is } u\text{, the distance covered in } t \text{ seconds is:}$ 1 102 Recommended Questions $(aut)$, $\frac{1}{a}\ln(aut)$... 3 Edit Delete
8891 $\text{A particle is moving along the x-axis such that its velocity varies with time as per the equation } v = 20\left(1 - \frac{t}{2}\right)\text{. At } t = 0 \text{ particle is at the origin. From the following, select the correct position }(x)\text{ - time }(t)\text{ plot for the particle:}$ 1 102 Recommended Questions $\text{Graph 1: Linear decrease in position with time, reaching a minimum and then continuing downward}$, $\text{Graph 2: Position decreases linearly, reaches a minimum at t = 2s, then increases linearly}$... 4 Edit Delete
8890 $\text{For the given acceleration }(a)\text{ versus time }(t)\text{ graph of a body, the body is initially at rest.}$ $\text{The acceleration-time graph shows acceleration starting at a positive value and decreasing linearly to zero.}$ $\text{From the following, the velocity }(v)\text{ versus time }(t)\text{ graph will be:}$ 1 102 Recommended Questions $\text{Graph 1: Linear increasing line starting from origin with constant positive slope}$, $\text{Graph 2: Linear decreasing line starting from a positive value}$... 3 Edit Delete
8889 $\text{The acceleration of a particle starting from rest varies with time according to the relation } A = -a\omega^2 \sin \omega t. \text{ The displacement of this particle at a time } t \text{ will be:}$ 1 102 Recommended Questions $\frac{1}{2}(a\omega^2 \sin \omega t) t^2$, $a\omega \sin \omega t$... 4 Edit Delete
8888 $\text{A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to } v(x) = \beta x^{-2n} \text{ where } \beta \text{ and } n \text{ are constants and } x \text{ is the position of the particle. The acceleration of the particle as a function of } x \text{ is given by:}$ 1 102 Recommended Questions $-2n\beta^2 x^{-2n-1}$, $-2n\beta^2 x^{-4n-1}$... 2 Edit Delete
8887 $\text{The acceleration } a \text{ (in ms}^{-2}\text{) of a body, starting from rest varies with time } t \text{ (in s) as per the equation } a = 3t + 4. \text{ The velocity of the body at time } t = 2 \text{s will be:}$ 1 102 Recommended Questions $10 \text{ ms}^{-1}$, $18 \text{ ms}^{-1}$... 3 Edit Delete
8886 $\text{The motion of a particle along a straight line is described by the equation: } x = 8 + 12t - t^3, \text{ where } x \text{ is in metre and } t \text{ is in second. The retardation of the particle when its velocity becomes zero is:}$ 1 102 Recommended Questions $24 \text{ ms}^{-2}$, $\text{zero}$... 4 Edit Delete
8885 $\text{The displacement of a particle is given by } y = a + bt + ct^2 - dt^4. \text{ The initial velocity and acceleration are, respectively:}$ 1 102 Recommended Questions $b, -4d$, $-b, 2c$... 3 Edit Delete
8884 $\text{A falling stone from rest takes 0.2 s to fall past a window on path which is 1 m high. From how far above the top of window, was the stone dropped?}$ 1 102 Recommended Questions $\frac{4}{5} \text{ m}$, $\frac{5}{7} \text{ m}$... 1 Edit Delete
8883 $\text{A balloon starts from the ground from rest with an upward acceleration of } 2 \text{ m/s}^2. \text{ After 1 sec, a stone is dropped from it. The time taken by the stone to strike the ground is approximately:}$ 1 102 Recommended Questions $0.3 \text{ s}$, $0.7 \text{ s}$... 2 Edit Delete
8882 $\text{A body starts falling from height } h \text{ and if it travels a distance of } \frac{h}{2} \text{ during the last second of motion, then the time of flight is (in seconds):}$ 1 102 Recommended Questions $\sqrt{2} - 1$, $2 + \sqrt{2}$... 2 Edit Delete
8881 $\text{Select the correct option based on the statements given below:}$ $\text{Assertion (A): A body can have acceleration even if its velocity is zero at a given instant of time.}$ $\text{Reason (R): A body is momentarily at rest when it reverses its direction of motion.}$ 1 102 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8880 $\text{A ball is dropped from a high-rise platform at } t = 0 \text{ starting from rest. After 6 seconds, another ball is thrown downwards from the same platform with speed } v. \text{ The two balls meet after 18 seconds. What is the value of } v?$ 1 102 Recommended Questions $75 \text{ ms}^{-1}$, $55 \text{ ms}^{-1}$... 1 Edit Delete
8879 $\text{A particle is allowed to fall from rest from a height } h\text{. Which of the following represents its velocity versus time graph?}$ 1 102 Recommended Questions $\text{Graph showing a horizontal line at constant velocity } \sqrt{2gh}$, $\text{Graph showing a straight line with positive slope starting from origin, reaching } \sqrt{2gh} \text{ at time } \sqrt{\frac{2h}{g}}$... 2 Edit Delete
8878 $\text{Starting from rest, a car accelerates uniformly at the rate of } 1 \text{ m/s}^2 \text{ for some time, then decelerates uniformly at the rate of } 2 \text{ m/s}^2 \text{ and finally comes to rest after a journey of } 1 \text{ minute. The maximum possible speed of the car during this journey is:}$ 1 102 Recommended Questions $10 \text{ m/s}$, $20 \text{ m/s}$... 4 Edit Delete
8877 $\text{A helicopter moving vertically upwards releases a packet when it is at a certain height above the ground. The packet initially moves upwards for a time } t_1 \text{ and then falls downwards for a time } t_2 \text{ until it reaches the ground. Then:}$ 1 102 Recommended Questions $t_1 < t_2$, $t_1 = t_2$... 1 Edit Delete
8876 $\text{If a ball is thrown vertically upwards with speed } u\text{, the distance covered during the last } t \text{ seconds of its ascent is:}$ 1 102 Recommended Questions $ut$, $\frac{1}{2}gt^2$... 2 Edit Delete
8875 $\text{A ball is thrown vertically upwards with a velocity of } 20 \text{ m/s from the top of a multistorey building. The height of the point from where the ball is thrown is } 25.0 \text{ m from the ground. How long will it be before the ball hits the ground?}$ $\text{(Take } g = 10 \text{ ms}^{-2}\text{)}$ 1 102 Recommended Questions $3 \text{ s}$, $2 \text{ s}$... 3 Edit Delete
8874 $\text{A man throws some balls with the same speed vertically upwards one after the other at an interval of } 2 \text{ seconds. What should be the speed of the throw so that more than two balls are in the sky at any time? (Given } g = 9.8 \text{ m/s}^2\text{)}$ 1 102 Recommended Questions $\text{More than } 19.6 \text{ m/s}$, $\text{At least } 9.8 \text{ m/s}$... 1 Edit Delete
8873 $\text{If a freely falling body travels in the last second a distance equal to the distance travelled by it in the first three seconds, the time of the travel is:}$ 1 102 Recommended Questions $6 \text{ sec}$, $5 \text{ sec}$... 2 Edit Delete
8872 $\text{A particle is projected upwards. The times corresponding to height } h \text{ while ascending and while descending are } t_1 \text{ and } t_2 \text{ respectively. The velocity of projection will be:}$ 1 102 Recommended Questions $gt_1$, $gt_2$... 4 Edit Delete
8871 $\text{A student is standing at a distance of 50 metres from the bus. As soon as the bus begins its motion with an acceleration of } 1 \text{ ms}^{-2}\text{, the student starts running towards the bus with a uniform velocity } u\text{. Assuming the motion to be along a straight road, the minimum value of } u\text{, so that the student is able to catch the bus is:}$ 1 102 Recommended Questions $5 \text{ ms}^{-1}$, $8 \text{ ms}^{-1}$... 3 Edit Delete
8870 $\text{A stone falls freely from rest from a height } h \text{ and it travels a distance of } \frac{9h}{25} \text{ in the last second. The value of } h \text{ is:}$ 1 102 Recommended Questions $145 \text{ m}$, $100 \text{ m}$... 3 Edit Delete
8868 $\text{The velocity of a particle moving along a straight line with constant acceleration } a \text{ reduces to } \frac{1}{5} \text{ of its initial velocity in time } \tau\text{. The total time taken by the body till its velocity becomes zero is:}$ 1 102 Recommended Questions $\frac{4\tau}{3}$, $\frac{5\tau}{4}$... 2 Edit Delete
8867 $\text{Four marbles are dropped from the top of a tower one after the other at a one-second interval. The first one reaches the ground after 4 seconds. When the first one reaches the ground the distances between the first and second, the second and third, and the third and fourth will be, respectively:}$ 1 102 Recommended Questions $35 \text{ m, } 25 \text{ m, and } 15 \text{ m}$, $30 \text{ m, } 20 \text{ m, and } 10 \text{ m}$... 1 Edit Delete
8866 $\text{A particle starts from rest (with constant acceleration) and acquires velocity 20 m/s in 5 s. The distance travelled by the particle in the next 2 s will be:}$ 1 102 Recommended Questions $50 \text{ m}$, $48 \text{ m}$... 2 Edit Delete
8865 $\text{A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to 49 ms}^{-1}\text{. How much time does the ball take to return to his hands?}$ 1 102 Recommended Questions $5 \text{ s}$, $10 \text{ s}$... 2 Edit Delete
8864 $\text{A stone dropped from a building of height } h \text{ and reaches the earth after } t \text{ seconds. From the same building, if two stones are thrown (one upwards and other downwards) with the same velocity } u \text{ and they reach the earth surface after } t_1 \text{ and } t_2 \text{ seconds respectively, then:}$ 1 102 Recommended Questions $t = t_1 - t_2$, $t = \frac{t_1 + t_2}{2}$... 3 Edit Delete
8863 $\text{A particle moves in a straight line with a constant acceleration. It changes its velocity from 10 ms}^{-1} \text{ to 20 ms}^{-1} \text{ while covering a distance of 135 m in } t \text{ seconds. The value of } t \text{ is:}$ 1 102 Recommended Questions $10$, $1.8$... 4 Edit Delete
8862 $\text{A body starting from rest moves with uniform acceleration on a horizontal surface. The body covers 3 consecutive equal distances from the beginning in time } t_1, t_2, \text{ and } t_3 \text{ seconds. The ratio of } t_1 : t_2 : t_3 \text{ is:}$ 1 102 Recommended Questions $1 : 2 : 3$, $1 : \sqrt{2} : \sqrt{3}$... 3 Edit Delete
8861 $\text{A car travelling at a speed of 30 km/h is brought to rest at a distance of 8 m by applying brakes. If the same car is moving at a speed of 60 km/h, then it can be brought to rest with the same brakes in:}$ 1 102 Recommended Questions $64 \text{ m}$, $32 \text{ m}$... 2 Edit Delete
8860 $\text{A body is thrown vertically up from the ground. It reaches a maximum height of 100 m in 5 s. After what time will it reach the ground from the position of maximum height?}$ 1 102 Recommended Questions $1.2 \text{ s}$, $5 \text{ s}$... 2 Edit Delete
8859 $\text{A particle is dropped vertically from rest from a height. The time taken by it to fall through successive distances of 1 m each will then be:}$ 1 102 Recommended Questions $\text{All equal, being equal to } \sqrt{\frac{2}{g}} \text{ s.}$, $\text{In the ratio of the square roots of the integers } 1, 2, 3\ldots$... 3 Edit Delete
8858 $\text{A ball is thrown vertically downwards with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with the velocity of 80 m/s. The height of the tower is: (assuming } g = 10 \text{ m/s}^2\text{)}$ 1 102 Recommended Questions $340 \text{ m}$, $320 \text{ m}$... 3 Edit Delete
8857 $\text{A stone falls freely under gravity. It covers distances } h_1, h_2 \text{ and } h_3 \text{ in the first 5 seconds, the next 5 seconds and the next 5 seconds respectively. The relation between } h_1, h_2 \text{ and } h_3 \text{ is:}$ 1 102 Recommended Questions $h_1 = \frac{h_2}{3} = \frac{h_3}{5}$, $h_2 = 3h_1 \text{ and } h_3 = 3h_2$... 1 Edit Delete
8856 $\text{A body is thrown upwards and reaches its maximum height. At that position:}$ 1 102 Recommended Questions $\text{its velocity is zero and its acceleration is also zero.}$, $\text{its velocity is zero but its acceleration is maximum.}$... 4 Edit Delete
8855 $\text{A particle is thrown vertically upward. Its velocity at half of the height is 10 m/s, then the maximum height attained by it is: } (g = 10 \text{ m/s}^2)$ 1 102 Recommended Questions $8 \text{ m}$, $20 \text{ m}$... 3 Edit Delete
8854 $\text{If a body is thrown up with the velocity of 15 m/s, then the maximum height attained by the body is: (assume } g = 10 \text{ m/s}^2\text{)}$ 1 102 Recommended Questions $11.25 \text{ m}$, $16.2 \text{ m}$... 1 Edit Delete
8853 $\text{A boy standing at the top of a tower of 20 m height drops a stone. Assuming } g = 10 \text{ m/s}^2\text{, the velocity with which it hits the ground will be:}$ 1 102 Recommended Questions $20 \text{ m/s}$, $40 \text{ m/s}$... 1 Edit Delete
8852 $\text{The figure gives a speed-time graph of a particle in motion along the same direction. Three equal intervals of time are shown. In which interval is the average acceleration greatest in magnitude?}$ 1 102 Recommended Questions $\text{Interval 2}$, $\text{Interval 1}$... 1 Edit Delete
8851 $\text{Given below are two statements:}$ $\text{Assertion (A): A particle having zero acceleration must have a constant speed.}$ $\text{Reason (R): A particle having constant speed must have zero acceleration.}$ 1 102 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8850 $\text{A point moves in a straight line so that its displacement is } x \text{ m at time } t \text{ sec, given by } x^2 = t^2 + 1\text{. Its acceleration in m/s}^2 \text{ at time 1 sec is:}$ 1 102 Recommended Questions $\frac{1}{x}$, $\frac{1}{x} - \frac{1}{x^3}$... 2 Edit Delete
8849 $\text{A particle moves with velocity } v_1 \text{ for time } t_1 \text{ and } v_2 \text{ for time } t_2 \text{ along a straight line. The magnitude of its average acceleration is:}$ 1 102 Recommended Questions $\frac{v_2-v_1}{t_1-t_2}$, $\frac{v_2-v_1}{t_1+t_2}$... 2 Edit Delete
8848 $\text{If a particle is moving along a straight line with increasing speed, then:}$ 1 102 Recommended Questions $\text{its acceleration is negative.}$, $\text{its acceleration may be decreasing.}$... 4 Edit Delete
8847 $\text{The velocity } v \text{ of an object varies with its position } x \text{ on a straight line as } v = 3\sqrt{x}\text{. Its acceleration versus time } (a-t) \text{ graph is best represented by:}$ 1 102 Recommended Questions $\text{Decreasing linear graph}$, $\text{Increasing linear graph}$... 3 Edit Delete
8846 $\text{A body is projected vertically in the upward direction from the surface of the earth. If the upward direction is taken as positive, then the acceleration of the body during its upward and downward journey is:}$ 1 102 Recommended Questions $\text{Positive, negative}$, $\text{Negative, negative}$... 2 Edit Delete
8845 $\text{If a particle has negative velocity and negative acceleration, its speed:}$ 1 102 Recommended Questions $\text{increases}$, $\text{decreases}$... 1 Edit Delete
8844 $\text{A particle moves a distance } x \text{ in time } t \text{ according to equation } x = (t + 5)^{-1}\text{. The acceleration of the particle is proportional to:}$ 1 102 Recommended Questions $(\text{velocity})^{\frac{3}{2}}$, $(\text{distance})^{2}$... 1 Edit Delete
8843 $\text{If the velocity of a particle is given by } v = (180 - 16x)^{1/2} \text{ m/s, then its acceleration will be:}$ 1 102 Recommended Questions $\text{zero}$, $8 \text{ m/s}^2$... 3 Edit Delete
8842 $\text{When the velocity of a body is variable, then:}$ 1 102 Recommended Questions $\text{its speed may be constant}$, $\text{its acceleration may be constant}$... 4 Edit Delete
8841 $\text{The acceleration } a \text{ in m/s}^2 \text{ of a particle is given by } a = 3t^2 + 2t + 2 \text{ where } t \text{ is the time. If the particle starts out with a velocity, } u = 2 \text{ m/s at } t = 0\text{, then the velocity at the end of 2 seconds will be:}$ 1 102 Recommended Questions $12 \text{ m/s}$, $18 \text{ m/s}$... 2 Edit Delete
8840 $\text{A particle moves along a straight line such that its displacement at any time } t \text{ is given by } S = t^3 - 6t^2 + 3t + 4 \text{ metres. The velocity when the acceleration is zero is:}$ 1 102 Recommended Questions $4 \text{ ms}^{-1}$, $-12 \text{ ms}^{-1}$... 4 Edit Delete
8839 $\text{A particle moves along a straight line such that its displacement at any time } t \text{ is given by } S = t^3 - 6t^2 + 3t + 4 \text{ metres. The velocity when the acceleration is zero is:}$ 1 102 Recommended Questions $4 \text{ ms}^{-1}$, $-12 \text{ ms}^{-1}$... 4 Edit Delete
8838 $\text{A body is moving along a straight line according to the equation of motion, } x = t^2 - 3t + 4, \text{ where } x \text{ is in metre and } t \text{ is in seconds.}$ $\text{What is the acceleration of the body when it comes to rest?}$ 1 102 Recommended Questions $\text{zero}$, $2 \text{ m/s}^2$... 2 Edit Delete
8837 $\text{The position } x \text{ of a particle varies with time } t \text{ as } x = at^2 - bt^3. \text{ The acceleration of the particle will be zero at time } t \text{ equal to:}$ 1 102 Recommended Questions $\frac{a}{b}$, $\frac{2a}{3b}$... 3 Edit Delete
8836 $\text{The motion of a particle is given by the equation } S = (3t^3 + 7t^2 + 14t + 8) \text{ m}. \text{ The value of the acceleration of the particle at } t = 1 \text{ is:}$ 1 102 Recommended Questions $10 \text{ m/s}^2$, $32 \text{ m/s}^2$... 2 Edit Delete
8835 $\text{Two buses } P \text{ and } Q \text{ start from a point at the same time and move in a straight line and their positions are represented by}$ $X_p(t) = \alpha t + \beta t^2 \text{ and } X_Q(t) = ft - t^2.$ $\text{At what time, do both the buses have the same velocity?}$ 1 102 Recommended Questions $\frac{\alpha - f}{1 + \beta}$, $\frac{\alpha + f}{2(\beta - 1)}$... 4 Edit Delete
8834 $\text{A particle moves along a straight line } OX. \text{ At a time } t \text{ (in seconds), the displacement } x \text{ (in metres) of the particle from } O \text{ is given by } x = 40 + 12t - t^3. \text{ How long would the particle travel before coming to rest?}$ 1 102 Recommended Questions $24 \text{ m}$, $40 \text{ m}$... 4 Edit Delete
8833 $\text{A particle is moving along a straight line such that its position depends on time as } x = 1 - at + bt^2, \text{ where } a = 2 \text{ m/s}, b = 1 \text{ m/s}^2. \text{ The distance covered by the particle during the first 3 seconds from start of the motion will be:}$ 1 102 Recommended Questions $2 \text{ m}$, $5 \text{ m}$... 2 Edit Delete
8831 $\text{A particle moves along a straight line and its position as a function of time is given by } x = t^3 - 3t^2 + 3t + 3 \text{ then particle:}$ 1 102 Recommended Questions $\text{stops at } t = 1 \text{ s and reverses its direction of motion.}$, $\text{stops at } t = 1 \text{ s and continues further without a change of direction.}$... 2 Edit Delete
8829 $\text{The displacement } x \text{ of a particle varies with time } t \text{ as } x = ae^{-\alpha t} + be^{\beta t}, \text{ where } a, b, \alpha, \text{ and } \beta \text{ are positive constants. The velocity of the particle will:}$ 1 102 Recommended Questions $\text{be independent of } \alpha \text{ and } \beta.$, $\text{go on increasing with time.}$... 2 Edit Delete
8828 $\text{If in one-dimensional motion, instantaneous speed } v \text{ satisfies } 0 \leq v < v_0, \text{ then:}$ 1 102 Recommended Questions $\text{the displacement in time } T \text{ must always take non-negative values.}$, $\text{the displacement } x \text{ in time } T \text{ satisfies } -v_0T < x < v_0T.$... 2 Edit Delete
8827 $\text{The position-time } (x-t) \text{ graphs for two children } A \text{ and } B \text{ returning from their school } O \text{ to their homes } P \text{ and } Q \text{ respectively are shown in the graph. Choose the incorrect statement.}$ 1 102 Recommended Questions $B \text{ reaches home faster than } A\text{.}$, $B \text{ overtakes } A \text{ on the road twice.}$... 2 Edit Delete
8826 $\text{The position of an object moving along the x-axis is given by } x = a + bt^2 \text{ where } a = 10 \text{ m}, b = 2 \text{ ms}^{-2} \text{ and } t \text{ is in seconds. The velocity at } t = 3.0 \text{ s is:}$ 1 102 Recommended Questions $12 \text{ ms}^{-1}$, $20 \text{ ms}^{-1}$... 2 Edit Delete
8825 $\text{The position } x \text{ of a particle moving along the x-axis varies with time } t \text{ as } x = 20t - 5t^2\text{, where } x \text{ is in meters and } t \text{ is in seconds. The particle reverses its direction of motion at:}$ 1 102 Recommended Questions $x = 40 \text{ m}$, $x = 10 \text{ m}$... 1 Edit Delete
8824 $\text{For a particle, displacement time relation is given by; } t = \sqrt{x} + 3\text{. Its displacement, when its velocity is zero will be:}$ 1 102 Recommended Questions $2 \text{ m}$, $4 \text{ m}$... 3 Edit Delete
8823 $\text{The position of an object moving along the x-axis is given by, } x = a + bt^2\text{, where } a = 8.5 \text{ m}, b = 2.5 \text{ m/s}^2\text{, and } t \text{ is measured in seconds. Its velocity at } t = 2.0 \text{ s will be:}$ 1 102 Recommended Questions $13 \text{ m/s}$, $17 \text{ m/s}$... 3 Edit Delete
8822 $\text{If the velocity of a particle is } v = At + Bt^2\text{, where } A \text{ and } B \text{ are constants, then the distance travelled by it between 1 s and 2 s is:}$ 1 102 Recommended Questions $3A + 7B$, $\frac{3}{2}A + \frac{7}{3}B$... 2 Edit Delete
8821 $\text{A particle starts from rest with constant acceleration. The ratio of space-average velocity to the time-average velocity is:}$ $\text{where time-average velocity and space-average velocity, respectively, are defined as follows:}$ $\langle v \rangle_{time} = \frac{\int v dt}{\int dt}$ $\langle v \rangle_{space} = \frac{\int v ds}{\int ds}$ 1 102 Recommended Questions $\frac{1}{2}$, $\frac{3}{4}$... 3 Edit Delete
8820 $\text{Given below are two statements:}$ $\text{Assertion (A): If the average velocity of a particle is zero in a time interval, it is possible that the instantaneous velocity is never zero in the interval.}$ $\text{Reason (R): If the average velocity of a particle moving on a straight line is zero in a time interval then at least for one moment the instantaneous velocity will also be zero in the interval.}$ 1 102 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8819 $\text{A particle moves with a velocity } v = \alpha t^3 \text{ along a straight line. The average speed in time interval } t = 0 \text{ to } t = T \text{ will be:}$ 1 102 Recommended Questions $\alpha T^3$, $\frac{\alpha T^3}{2}$... 4 Edit Delete
8818 $\text{The position of an object moving along x-axis is given by } x = a + bt^2\text{, where } a = 8.5 \text{ m}, b = 2.5 \text{ ms}^{-2} \text{ and } t \text{ is measured in seconds. Its average velocity between } t = 2.0 \text{ s and } t = 4.0 \text{ s is:}$ 1 102 Recommended Questions $10 \text{ m/s}$, $15 \text{ m/s}$... 2 Edit Delete
8817 $\text{A car is moving along a straight line, say OP in the figure. It moves from O to P in 18 s and returns from P to O in 6.0 s. The average velocity and average speed of the car in going from O to P and back to O respectively are:}$ 1 102 Recommended Questions $10 \text{ m/s \& } 10 \text{ m/s}$, $20 \text{ m/s \& } 30 \text{ m/s}$... 4 Edit Delete
8816 $\text{A particle moving in a straight line covers half the distance with a speed of } 3 \text{ m/s. The other half of the distance is covered in two equal time intervals with speeds of } 4.5 \text{ m/s and } 7.5 \text{ m/s respectively. The average speed of the particle during this motion is:}$ 1 102 Recommended Questions $4.0 \text{ m/s}$, $5.0 \text{ m/s}$... 1 Edit Delete
8815 $\text{A passenger arriving in a new town wishes to go from the station to a hotel located } 10 \text{ km away on a straight road from the station. A dishonest cabman takes him along a circuitous path } 23 \text{ km long and reaches the hotel in } 28 \text{ min. The average speed of the taxi is:}$ 1 102 Recommended Questions $30 \text{ km/h}$, $49.3 \text{ km/h}$... 2 Edit Delete
8814 $\text{The coordinate of an object is given as a function of time by } x = 7t - 3t^2, \text{ where } x \text{ is in metres and } t \text{ is in seconds. Its average velocity over the interval } t = 0 \text{ to } t = 4 \text{ is will be:}$ 1 102 Recommended Questions $5 \text{ m/s}$, $-5 \text{ m/s}$... 2 Edit Delete
8813 $\text{A vehicle travels half the distance } L \text{ with speed } v_1 \text{ and the other half with speed } v_2, \text{ then its average speed is:}$ 1 102 Recommended Questions $\frac{v_1 + v_2}{2}$, $\frac{2v_1 + v_2}{v_1 + v_2}$... 3 Edit Delete
8812 $\text{A car moves from } X \text{ to } Y \text{ with a uniform speed } v_u \text{ and returns to } X \text{ with a uniform speed } v_d. \text{ The average speed for this round trip is:}$ 1 102 Recommended Questions $\frac{2v_dv_u}{v_d + v_u}$, $\sqrt{v_u v_d}$... 1 Edit Delete
8811 $\text{If a body travels some distance in a given time interval, then for that time interval, its:}$ 1 102 Recommended Questions $\text{Average speed} \geq |\text{Average velocity}|$, $|\text{Average velocity}| \geq \text{Average speed}$... 1 Edit Delete
8810 $\text{The figure gives the } (x-t) \text{ plot of a particle in a one-dimensional motion. Three different equal intervals of time are shown. The signs of average velocity for each of the intervals } 1, 2 \text{ and } 3, \text{ respectively are:}$ 1 102 Recommended Questions $-, -, +$, $+, -, +$... 4 Edit Delete
8809 $\text{An object moves along a straight line. It travels } 30 \text{ m in } 5 \text{ s and } 60 \text{ m in the next } 10 \text{ seconds. The average speed of the object is:}$ 1 102 Recommended Questions $6 \text{ m/s}$, $10 \text{ m/s}$... 1 Edit Delete
8808 $\text{The displacement } x \text{ of a particle moving in one dimension under the action of a constant force is related to time } t \text{ by the equation } t = \sqrt{x} + 3, \text{ where } x \text{ is in meters and } t \text{ is in seconds. What is the displacement of the particle from } t = 0 \text{ s to } t = 6 \text{ s?}$ 1 102 Recommended Questions $0$, $12 \text{ m}$... 1 Edit Delete
8807 $\text{A drunkard walking in a narrow lane takes 5 steps forward and 3 steps backward, followed again by 5 steps forward and 3 steps backward, and so on. Each step is 1 m long and requires 1 s. There is a pit on the road 13 m away from the starting point. The drunkard will fall into the pit after:}$ 1 102 Recommended Questions $37 \text{ s}$, $31 \text{ s}$... 1 Edit Delete
8806 $\text{Given below are two statements:}$ $\textbf{Assertion (A):} \text{ Adding a scalar to a vector of the same dimension is a meaningful algebraic operation.}$ $\textbf{Reason (R):} \text{ Displacement can be added to distance.}$ 1 102 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
8805 $\text{A body is projected vertically upwards with a speed } v. \text{ The distance travelled by the body in the last second of upward journey is the same as that of:}$ 1 102 Recommended Questions $\text{distance travelled in last second of downward journey}$, $\text{distance travelled in first second of upward journey}$... 3 Edit Delete
8804 $\text{A particle moves along a path } ABCD \text{ as shown in the figure. The magnitude of the displacement of the particle from } A \text{ to } D \text{ is:}$ 1 102 Recommended Questions $(5 + 10\sqrt{2}) \text{ m}$, $10 \text{ m}$... 4 Edit Delete
8803 $\text{A car moves with a speed of 60 km/h for 1 hour in the east direction and with the same speed for 30 min in the south direction. The displacement of the car from the initial position is:}$ 1 102 Recommended Questions $60 \text{ km}$, $30\sqrt{2} \text{ km}$... 3 Edit Delete
8802 $\textbf{Assertion (A):} \text{ Displacement of a body may be zero when distance travelled by it is not zero.}$ $\textbf{Reason (R):} \text{ The displacement is the longest distance between initial and final position.}$ 1 102 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8801 $\text{Given below are two statements:}$ $\textbf{Assertion (A):} \text{ Position-time graph of a stationary object is a straight line parallel to the time axis.}$ $\textbf{Reason (R):} \text{ For a stationary object, the position does not change with time.}$ 1 102 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8800 85 1 101 Recommended Questions 1, 2... 3 Edit Delete
8799 \text{The angle of } 1^\circ \text{ (degree) will be equal to:} \text{(Use } 360^\circ = 2\pi \text{ rad)} 1 101 Recommended Questions $1.034 \times 10^{-3} \text{ rad}$, $1.745 \times 10^{-2} \text{ rad}$... 2 Edit Delete
8798 $\text{A light-year is a unit of:}$ 1 101 Recommended Questions $\text{Time}$, $\text{Mass}$... 3 Edit Delete
8797 $\text{The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give respectively,}$ 1 101 Recommended Questions $2.75 \text{ and } 2.74$, $2.74 \text{ and } 2.73$... 4 Edit Delete
8796 $\text{The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give respectively,}$ 1 101 Recommended Questions $2.75 \text{ and } 2.74$, $2.74 \text{ and } 2.73$... 1 Edit Delete
8795 $\text{For a real gas the equation of gas is given by;}$ $\left(P + \frac{an^2}{V^2}\right)(V - bn) = nRT. \text{ If symbols have their usual meaning, then the dimensions of } \frac{V^2}{an^2} \text{ is same as that of:}$ 1 101 Recommended Questions $\text{compressibility}$, $\text{bulk modulus}$... 1 Edit Delete
8794 $\text{The pitch of the screw gauge is 1 mm and there are 100 divisions on the circular scale. When nothing is put in between the jaws, the zero of the circular scale lies 8 divisions below the reference line. When a wire is placed between the jaws, the first linear scale division is clearly visible while the } 72^{\text{nd}} \text{ division on a circular scale coincides with the reference line. The radius of the wire is:}$ 1 101 Recommended Questions $1.64 \text{ mm}$, $0.82 \text{ mm}$... 2 Edit Delete
8793 $\text{Find the thickness of the wire. The least count is 0.01 mm. The main scale reads: (in mm)}$ $\text{The diagrams show a measuring instrument in two positions - one without the wire and one with the wire placed between the jaws.}$ 1 101 Recommended Questions $7.62$, $7.63$... 3 Edit Delete
8792 $\text{A screw gauge has some zero error but its value is unknown. We have two identical rods. When the first rod is inserted in the screw, the state of the instrument is shown by diagram (I). When both the rods are inserted together in series then the state is shown by the diagram (II). What is the zero error of the instrument?}$ $1 \text{ msd} = 100 \text{ csd} = 1 \text{ mm}$ 1 101 Recommended Questions $-0.16 \text{ mm}$, $+0.16 \text{ mm}$... 3 Edit Delete
8791 $\text{Consider a screw gauge without any zero error. What will be the final reading corresponding to the final state as shown?}$ $\text{It is given that the circular head translates } P \text{ MSD in } N \text{ rotations. (1 MSD} = 1 \text{ mm.)}$ $\text{The circular scale has 100 divisions}$ 1 101 Recommended Questions $\left(\frac{P}{N}\right)\left(2 + \frac{45}{100}\right) \text{ mm}$, $\left(\frac{N}{P}\right)\left(2 + \frac{45}{N}\right) \text{ mm}$... 2 Edit Delete
8790 $\text{Consider a screw gauge without any zero error. What will be the final reading corresponding to the final state as shown?}$ $\text{It is given that the circular head translates } P \text{ MSD in } N \text{ rotations. (1 MSD} = 1 \text{ mm.)}$ $\text{The circular scale has 100 divisions}$ 1 101 Recommended Questions $\left(\frac{P}{N}\right)\left(2 + \frac{45}{100}\right) \text{ mm}$, $\left(\frac{N}{P}\right)\left(2 + \frac{45}{N}\right) \text{ mm}$... 4 Edit Delete
8789 $\text{The pitch of a screw gauge is 1 mm and there are 100 divisions on the circular scale. While measuring the diameter of a wire, the linear scale reads 1 mm and } 47^{\text{th}} \text{ division on the circular scale coincides with the reference line. The length of the wire is 5.6 cm. Curved surface area (in cm}^2\text{) of the wire in appropriate number of significant figures will be:}$ 1 101 Recommended Questions $2.4 \text{ cm}^2$, $2.56 \text{ cm}^2$... 3 Edit Delete
8788 $\text{A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm.}$ $\text{The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level.}$ $\text{If the screw gauge has a zero error of } -0.004 \text{ cm, the correct diameter of the ball is:}$ 1 101 Recommended Questions $0.521 \text{ cm}$, $0.525 \text{ cm}$... 4 Edit Delete
8787 $\text{A screw gauge gives the following readings when used to measure the diameter of a wire:}$ $\text{Main scale reading: 0 mm}$ $\text{Circular scale reading: 52 divisions}$ $\text{Given that 1 mm on the main scale corresponds to 100 divisions on the circular scale, the diameter of the wire that can be inferred from the given data is:}$ 1 101 Recommended Questions $0.26 \text{ cm}$, $0.052 \text{ cm}$... 2 Edit Delete
8786 $\text{In a vernier calliper, } N \text{ divisions of vernier scale coincide with } (N-1) \text{ divisions of the main scale}$ $\text{(in which the length of one division is 1 mm). The least count of the instrument should be:}$ 1 101 Recommended Questions $N \text{ mm}$, $(N-1) \text{ mm}$... 3 Edit Delete
8785 $\text{In certain vernier callipers, 25 divisions on the vernier scale have the same length as 24 divisions on the main scale. One division on the main scale is 1 mm long. The least count of the instrument is:}$ 1 101 Recommended Questions $0.04 \text{ mm}$, $0.01 \text{ mm}$... 1 Edit Delete
8784 $\text{A screw gauge has the least count of 0.01 mm and there are 50 divisions in its circular scale.}$ $\text{The pitch of the screw gauge is:}$ 1 101 Recommended Questions $0.25 \text{ mm}$, $0.5 \text{ mm}$... 2 Edit Delete
8783 $\text{Given below are two statements:}$ $\text{Statement A: In a number less than 1, all zeros on the right of decimal point are significant.}$ $\text{Statement B: Zeros between two non-zero numbers are not significant.}$ 1 101 Recommended Questions $\text{Statement A is correct.}$, $\text{Statement B is correct.}$... 4 Edit Delete
8782 $\text{If } x = 10.0 \pm 0.1 \text{ and } y = 10 \pm 0.1, \text{ then } 2x - 2y \text{ with consideration of significant figures is equal to:}$ 1 101 Recommended Questions $\text{zero}$, $0.0 \pm 0.1$... 4 Edit Delete
8781 $\text{The mass of a box measured by the grocer's balance is 2.300 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. The total mass of the box and the difference in the masses of the gold piece should be recorded to correct significant figures will be respectively:}$ 1 101 Recommended Questions $\text{2340.32 g, 0.002 g}$, $\text{2.340 kg, 0.02 g}$... 2 Edit Delete
8780 $\text{The sum of the numbers 436.32, 227.2, and 0.301 in the appropriate significant figures is:}$ 1 101 Recommended Questions $663.821$, $664$... 3 Edit Delete
8779 $\text{A thin wire has a length of 21.7 cm and a radius of 0.46 mm. The volume of the wire to correct significant figures is:}$ 1 101 Recommended Questions $0.15 \text{ cm}^3$, $0.1443 \text{ cm}^3$... 3 Edit Delete
8778 $\text{The measurements are made as 18.425 cm, 7.21 cm, and 5.0 cm.}$ $\text{The addition of these measurements should be written as:}$ 1 101 Recommended Questions $30.635 \text{ cm}$, $30.64 \text{ cm}$... 4 Edit Delete
8777 $\text{Taking into account the significant figures, what is the value of } (9.99 \text{ m} - 0.0099 \text{ m})?$ 1 101 Recommended Questions $9.98 \text{ m}$, $9.980 \text{ m}$... 1 Edit Delete
8776 $\text{The decimal equivalent of } \frac{1}{20} \text{ up to three significant figures is:}$ 1 101 Recommended Questions $0.0500$, $0.05000$... 1 Edit Delete
8775 $\text{If 97.52 is divided by 2.54, the correct result in terms of significant figures is:}$ 1 101 Recommended Questions $38.4$, $38.3937$... 1 Edit Delete
8774 $\text{Each side of a cube is measured to be 7.203 m. What are the total surface area and the volume respectively of the cube to appropriate significant figures?}$ 1 101 Recommended Questions $373.7 \text{ m}^2 \text{ and } 311.3 \text{ m}^3$, $311.3 \text{ m}^2 \text{ and } 373.7 \text{ m}^3$... 2 Edit Delete
8773 $\text{What is the number of significant figures in } 0.310 \times 10^3?$ 1 101 Recommended Questions $2$, $3$... 2 Edit Delete
8772 $\text{The number of significant figures in } 0.0006032 \text{ m}^2 \text{ is:}$ 1 101 Recommended Questions $4$, $5$... 1 Edit Delete
8771 $\text{The mass and volume of a body are 4.237 grams and 2.5 cm}^3\text{, respectively. The density of the material of the body in correct significant figures will be:}$ 1 101 Recommended Questions $1.6048 \text{ grams cm}^{-3}$, $1.69 \text{ grams cm}^{-3}$... 3 Edit Delete
8770 $\text{In which of the following, the number of significant figures is different from that in the others?}$ 1 101 Recommended Questions $\text{2.303 kg}$, $\text{12.23 m}$... 3 Edit Delete
8769 $\text{The number of significant figures in the numbers 25.12, 2009, 4.156 and } 1.217 \times 10^{-4} \text{ is:}$ 1 101 Recommended Questions $1$, $2$... 4 Edit Delete
8768 $\text{The length and breadth of a rectangular sheet are 16.2 cm and 10.1 cm, respectively. The area of the sheet in appropriate significant figures and error would be, respectively}$ 1 101 Recommended Questions $164 \pm 3 \text{ cm}^2$, $163.62 \pm 2.6 \text{ cm}^2$... 1 Edit Delete
8767 \text{Two resistors } R_1 = (3.0 \pm 0.3) \, \Omega \text{ and } R_2 = (5.0 \pm 0.1) \, \Omega \text{ are connected in parallel.} \text{The equivalent resistance, } R_{\text{eq}}\text{, will be:} \text{Hint: } \frac{1}{R_{\text{eq}}} = \frac{1}{R_1} + \frac{1}{R_2} 1 101 Recommended Questions $1.9 \pm 0.07 \Omega$, $1.9 \pm 0.1 \Omega$... 2 Edit Delete
8766 \text{In an experiment, the following observations were recorded: initial length } L = 2.820 \text{ m, mass } M = 3.00 \text{ kg, change in length } \Delta l = 0.087 \text{ cm, diameter } D = 0.041 \text{ cm. Taking } g = 9.81 \text{ m/s}^2 \text{ and using the formula } Y = \frac{4MgL}{\pi D^2 \Delta l}\text{, the maximum permissible error in } Y \text{ will be:} 1 101 Recommended Questions $7.96\%$, $4.56\%$... 3 Edit Delete
8765 $\text{The period of oscillation of a simple pendulum is given by } T = 2\pi\sqrt{\frac{L}{g}} \text{ where } L \text{ is about 100 cm and is known to have 1 mm accuracy. The period is about 2 s. The time of 100 oscillations is measured by a stopwatch of least count 0.1 s. The percentage error in } g \text{ is:}$ 1 101 Recommended Questions $0.1\%$, $1\%$... 3 Edit Delete
8764 $\text{A wire has a mass of } (0.3 \pm 0.003) \text{ grams, a radius of } (0.5 \pm 0.005) \text{ mm, and a length of } (0.6 \pm 0.006) \text{ cm. The maximum percentage error in the measurement of its density will be:}$ 1 101 Recommended Questions $1$, $2$... 4 Edit Delete
8763 $\text{The length of a cylinder is measured with a meter rod having the least count of 0.1 cm. Its diameter is measured with vernier calipers having the least count of 0.01 cm. Given that the length is 5.0 cm and the radius is 2.0 cm. The percentage error in the calculated value of the volume will be:}$ 1 101 Recommended Questions $1\%$, $2\%$... 3 Edit Delete
8762 $\text{A physical quantity } P \text{ is given by } P = \frac{A^3 B^{1/2}}{C^{-4} D^{3/2}}. \text{ The quantity which contributes the maximum percentage error in } P \text{ is:}$ 1 101 Recommended Questions $A$, $B$... 3 Edit Delete
8761 $\text{A physical parameter 'a' can be determined by measuring the parameters } b, c, d \text{ and } e \text{ using the relation, } a = \frac{b^\alpha c^\beta}{d^\gamma e^\delta}. \text{ If the maximum errors in the measurement of } b, c, d, \text{ and } e \text{ are } b_1\%, c_1\%, d_1\% \text{ and } e_1\% \text{, then the maximum error in the value of 'a' determined by the experiment is:}$ 1 101 Recommended Questions $(b_1 + c_1 + d_1 + e_1)\%$, $(b_1 + c_1 - d_1 - e_1)\%$... 4 Edit Delete
8760 $\text{The thickness of a pencil measured by using a screw gauge (least count 0.001 cm) comes out to be 0.802 cm. The percentage error in the measurement is:}$ 1 101 Recommended Questions $0.125\%$, $2.43\%$... 1 Edit Delete
8759 $\text{The mean length of an object is 5 cm. Which of the following measurements is the most accurate?}$ 1 101 Recommended Questions $4.9 \text{ cm}$, $4.805 \text{ cm}$... 1 Edit Delete
8758 $\text{A physical quantity } A \text{ is related to four observable quantities } a, b, c \text{ and } d \text{ as follows, } A = \frac{a^2 b^3}{c\sqrt{d}}, \text{ the percentage errors of measurement in } a, b, c \text{ and } d \text{ are } 1\%, 3\%, 2\% \text{ and } 2\% \text{ respectively. The percentage error in quantity } A \text{ will be:}$ 1 101 Recommended Questions $12\%$, $7\%$... 4 Edit Delete
8757 $\text{The percentage errors in the measurement of mass and speed are 2\% and 3\% respectively. How much will be the maximum error in the estimation of the kinetic energy obtained by measuring mass and speed:}$ 1 101 Recommended Questions $11\%$, $8\%$... 2 Edit Delete
8756 $\text{If the error in the measurement of the radius of a sphere is 2\%, then the error in the determination of the volume of the sphere will be:}$ 1 101 Recommended Questions $4\%$, $6\%$... 2 Edit Delete
8755 $\text{Match the physical quantities given in Column I with the physical dimensions in Column II:}$ $\text{Column I:}$ $\text{(A) Torque}$ $\text{(B) Stress}$ $\text{(C) Pressure Gradient}$ $\text{(D) Angular momentum}$ $\text{Column II:}$ $\text{(P) } ML^{-1}T^{-2}$ $\text{(Q) } ML^2T^{-2}$ $\text{(R) } ML^{-2}T^{-2}$ $\text{(S) } ML^{-1}T^{-1}$ 1 101 Recommended Questions $\text{A - S, B - P, C - R, D - Q}$, $\text{A - Q, B - P, C - R, D - S}$... 2 Edit Delete
8754 $\text{The quantities } A \text{ and } B \text{ are related by the relation, } m = \frac{A}{B}, \text{ where } m \text{ is the linear density and } A \text{ is the force. The dimensions of } B \text{ are of:}$ 1 101 Recommended Questions $\text{Pressure}$, $\text{Work}$... 3 Edit Delete
8753 $\text{The number of particles crossing a unit area perpendicular to the } x\text{-axis in unit time is given by } n = -D \frac{n_2-n_1}{x_2-x_1}, \text{ where } n_1 \text{ and } n_2 \text{ are the number of particles per unit volume for the value of } x \text{ equal to } x_1 \text{ and } x_2 \text{ respectively. The dimensions of } D, \text{ known as the diffusion constant, will be:}$ 1 101 Recommended Questions $[M^0LT^{-2}]$, $[M^0L^2T^{-4}]$... 4 Edit Delete
8752 $\text{A small steel ball of radius } r \text{ is allowed to fall under gravity through a column of a viscous liquid of coefficient of viscosity } \eta. \text{ After some time the velocity of the ball attains a constant value known as terminal velocity } v_T. \text{ The terminal velocity depends on (i) the mass of the ball } m \text{ (ii) } \eta \text{ (iii) } r \text{ and (iv) acceleration due to gravity } g. \text{ Which of the following relations is dimensionally correct:}$ 1 101 Recommended Questions $v_T \propto \frac{mg}{\eta r}$, $v_T \propto \frac{\eta r}{mg}$... 1 Edit Delete
8751 $\text{Given the equation } \left(P + \frac{a}{V^2}\right)(V - b) = \text{constant}. \text{ The units of } a \text{ will be: (where } P \text{ is pressure and } V \text{ is volume)}$ 1 101 Recommended Questions $\text{dyne} \times \text{cm}^5$, $\text{dyne} \times \text{cm}^4$... 2 Edit Delete
8750 $\text{The density of a material in a CGS system of units is 4 grams/cm}^3. \text{ In a system of units in which the unit of length is 10 cm and the unit of mass is 100 grams, the value of the density of the material will be:}$ 1 101 Recommended Questions $0.04$, $0.4$... 3 Edit Delete
8749 $\text{The displacement } (Y) \text{ as a function of position } (x) \text{ and time } (t) \text{ is given as } Y = Ae^{(bx+Ct)}. \text{ Which of the following expressions has dimensions different from others?}$ 1 101 Recommended Questions $YC$, $AC$... 4 Edit Delete
8748 $\text{The dimensions of resistivity in terms of } M, L, T, \text{ and } Q \text{ where } Q \text{ stands for the dimensions of charge, will be:}$ 1 101 Recommended Questions $[ML^3T^{-1}Q^{-2}]$, $[ML^3T^{-2}Q^{-1}]$... 1 Edit Delete
8747 \text{On the basis of dimensions, decide which of the following relations for the displacement of a particle undergoing simple harmonic motion is/are not correct.} \text{(a) } y = a \sin\left(\frac{2\pi t}{T}\right) \text{(b) } y = a \sin(vt) \text{(c) } y = \frac{a}{T} \sin\left(\frac{t}{a}\right) \text{(d) } y = a\sqrt{2} \left(\sin\left(\frac{2\pi t}{T}\right) - \cos\left(\frac{2\pi t}{T}\right)\right) \text{(Symbols have their usual meanings.)} \text{Choose the correct option:} 1 101 Recommended Questions $\text{(a), (c)}$, $\text{(a), (b)}$... 3 Edit Delete
8746 $\text{The dimensions of a couple are:}$ 1 101 Recommended Questions $[ML^2T^{-2}]$, $[MLT^{-2}]$... 1 Edit Delete
8745 $\text{An object is moving through a liquid. The viscous damping force acting on it is proportional to the velocity. Then the dimensions of the constant of proportionality are:}$ 1 101 Recommended Questions $[ML^{-1}T^{-1}]$, $[MLT^{-1}]$... 4 Edit Delete
8744 $\text{If } x = \frac{a \sin \theta + b \cos \theta}{a + b}, \text{ then:}$ 1 101 Recommended Questions $\text{the dimensions of } x \text{ and } a \text{ must be the same}$, $\text{the dimensions of } a \text{ and } b \text{ are not the same}$... 3 Edit Delete
8743 $\text{The frequency of vibration } f \text{ of a mass } m \text{ suspended from a spring of spring constant } k \text{ is given by a relation of type } f = Cm^x k^y\text{; where } C \text{ is a dimensionless quantity. The values of } x \text{ and } y \text{ will be:}$ 1 101 Recommended Questions $x = \frac{1}{2}, y = \frac{1}{2}$, $x = -\frac{1}{2}, y = -\frac{1}{2}$... 4 Edit Delete
8742 $\text{Which of the following relations is dimensionally wrong? [The symbols have their usual meanings]}$ 1 101 Recommended Questions $s = ut + \frac{1}{6}at^2$, $v^2 = u^2 + \frac{2as^2}{\pi}$... 2 Edit Delete
8741 $\text{If dimensions of critical velocity } v_c \text{ of a liquid flowing through a tube are expressed as } \eta^x \rho^y r^z\text{, where } \eta\text{, } \rho \text{ and } r \text{ are the coefficient of viscosity of the liquid, the density of the liquid, and the radius of the tube respectively, then the values of } x\text{, } y\text{, and } z\text{, respectively, will be:}$ 1 101 Recommended Questions $1, -1, -1$, $-1, -1, 1$... 1 Edit Delete
8740 $\text{Given below are two statements:}$ $\text{Assertion (A): When we change the unit of measurement of a quantity, its numerical value changes.}$ $\text{Reason (R): Smaller the unit of measurement, smaller is its numerical value.}$ 1 101 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8739 $\text{The dimensions of the Planck constant are equal to that of:}$ 1 101 Recommended Questions $\text{energy}$, $\text{momentum}$... 3 Edit Delete
8738 $\text{If } y = a \sin(bt - cx)\text{, where } y \text{ and } x \text{ represent length and } t \text{ represents time, then which of the following has the same dimensions as that of } \frac{ab^2}{c}\text{?}$ 1 101 Recommended Questions $\text{(speed)}^2$, $\text{momentum}$... 1 Edit Delete
8737 $\text{The position of a particle at time } t \text{ is given by the relation } x(t) = \left(\frac{v_0}{\alpha}\right)\left(1 - e^{-\alpha t}\right)\text{, where } v_0 \text{ is a constant and } \alpha > 0\text{. The dimensions of } v_0 \text{ and } \alpha \text{ are respectively:}$ 1 101 Recommended Questions $[M^0L^1T^{-1}] \text{ and } [T^{-1}]$, $[M^0L^1T^0] \text{ and } [T^{-1}]$... 1 Edit Delete
8736 $\text{If force (F), velocity (v), and time (T) are taken as fundamental units, the dimensions of mass will be:}$ 1 101 Recommended Questions $[FvT^{-1}]$, $[FvT^{-2}]$... 4 Edit Delete
8735 $\text{If energy (E), velocity (v) and time (T) are chosen as the fundamental quantities, the dimensional formula of surface tension will be:}$ 1 101 Recommended Questions $[Ev^{-2}T^{-1}]$, $[Ev^{-1}T^{-2}]$... 3 Edit Delete
8734 $\text{Planck's constant (h), speed of light in the vacuum (c), and Newton's gravitational constant (G) are the three fundamental constants. Which of the following combinations of these has the dimension of length?}$ 1 101 Recommended Questions $\frac{\sqrt{hG}}{c^{3/2}}$, $\frac{\sqrt{hG}}{c^{5/2}}$... 1 Edit Delete
8733 $\text{Temperature can be expressed as a derived quantity in terms of any of the following:}$ 1 101 Recommended Questions $\text{length and mass}$, $\text{mass and time}$... 4 Edit Delete
8732 $\text{For the expression, } 10^{(at+3)}\text{, the dimensions of } a \text{ will be:}$ 1 101 Recommended Questions $[M^0L^0T^0]$, $[M^0L^0T^1]$... 3 Edit Delete
8731 $\text{In } S = a + bt + ct^2\text{, } S \text{ is measured in metres and } t \text{ in seconds. The unit of } c \text{ will be:}$ 1 101 Recommended Questions $\text{none}$, $\text{m}$... 4 Edit Delete
8730 $\text{When units of mass, length, and time are taken as 10 kg, 60 m and 60 s respectively, the new unit of energy becomes } x \text{ times the initial SI unit of energy. The value of } x \text{ will be:}$ 1 101 Recommended Questions $10$, $20$... 1 Edit Delete
8729 $\text{The dimensions of } (\mu_0\varepsilon_0)^{-\frac{1}{2}} \text{ are:}$ 1 101 Recommended Questions $[L^{-1}T]$, $[LT^{-1}]$... 2 Edit Delete
8728 $\text{In the relation, } y = a \cos(\omega t - kx)\text{, the dimensional formula for } k \text{ will be:}$ 1 101 Recommended Questions $[M^0L^{-1}T^{-1}]$, $[M^0LT^{-1}]$... 3 Edit Delete
8727 $\text{The position of a body with acceleration } a \text{ is given by } x = Ka^m t^n \text{ (assume } t \text{ to be time). The values of } m \text{ and } n \text{ will be:}$ 1 101 Recommended Questions $m = 1, n = 1$, $m = 1, n = 2$... 2 Edit Delete
8726 $\text{If the units of force and length, are increased by four times, then the unit of energy increases by:}$ 1 101 Recommended Questions $16 \text{ times}$, $8 \text{ times}$... 1 Edit Delete
8725 $\text{The dimensional formula for impulse is:}$ 1 101 Recommended Questions $[MLT^{-2}]$, $[MLT^{-1}]$... 2 Edit Delete
8724 $\text{The dimensional formula of pressure is:}$ 1 101 Recommended Questions $[MLT^{-2}]$, $[ML^{-1}T^2]$... 3 Edit Delete
8723 $\text{Which, among the pairs of quantities has the same dimensions?}$ 1 101 Recommended Questions $\frac{\text{force}}{\text{volume}}\text{, surface tension}$, $\text{torque, pressure } \times \text{ volume}$... 2 Edit Delete
8722 \text{The force } F \text{ acting on a body as a function of position } (x) \text{ and time } (t) \text{ is expressed as:} F = A \sin(k_{1} x) + B \cos(k_{2} t) \text{From the given information, match Column I with Column II.} \text{Column I:} \text{(A) Dimensions of } A \text{(B) Dimensions of } k_{1} \text{(C) Dimensions of } k_{2} \text{(D) Dimensions of } k_{1} k_{2} \text{Column II:} \text{(P) } [M^{0} L^{0} T^{-1}] \text{(Q) } [M^{0} L^{-1} T^{-1}] \text{(R) } [MLT^{-2}] \text{(S) } [M^{0} L^{-1} T^{0}] 1 101 Recommended Questions $A \rightarrow R, B \rightarrow S, C \rightarrow P, D \rightarrow Q$, $A \rightarrow P, B \rightarrow Q, C \rightarrow R, D \rightarrow S$... 1 Edit Delete
8721 $\text{The universal gravitational constant is dimensionally represented as:}$ 1 101 Recommended Questions $[ML^2T^{-1}]$, $[M^{-2}L^3T^{-2}]$... 4 Edit Delete
8720 $\text{If the dimensions of a physical quantity are given by } [M^a L^b T^c]\text{, then the physical quantity will be:}$ 1 101 Recommended Questions $\text{pressure if } a = 1, b = -1, c = -2$, $\text{velocity if } a = 1, b = 0, c = -1$... 1 Edit Delete
8719 $\text{The velocity } v \text{ of a particle at time } t \text{ is given by } v = at + \frac{b}{t+c}\text{. The dimensions of } a\text{, } b\text{, and } c \text{ are respectively:}$ 1 101 Recommended Questions $[LT^{-2}], [L], [T]$, $[L^2], [T] \text{ and } [LT^2]$... 1 Edit Delete
8718 $\text{The dimensional formula of modulus of rigidity is:}$ 1 101 Recommended Questions $[ML^{-1}T^{-2}]$, $[ML^{-2}T^{2}]$... 1 Edit Delete
8717 $\text{If } u_1 \text{ and } u_2 \text{ are the units selected in two systems of measurement and } n_1 \text{ and } n_2 \text{ are their numerical values, then:}$ 1 101 Recommended Questions $n_1u_1 = n_2u_2$, $n_1u_1 + n_2u_2 = 0$... 1 Edit Delete
8716 $\text{Identify the pair whose dimensions are equal:}$ 1 101 Recommended Questions $\text{stress and energy}$, $\text{force and work}$... 3 Edit Delete
8715 $\text{Hydrogen exists in diatomic form rather than monoatomic form under normal conditions -}$ 2 209 Recommended Questions $\text{Due to high ionization enthalpy}$, $\text{Due to low ionization enthalpy}$... 1 Edit Delete
8714 $\text{The colour of hydrogen is -}$ 2 209 Recommended Questions $\text{Blue}$, $\text{Yellow}$... 4 Edit Delete
8713 $\text{Hydrogen is placed separately in the periodic table because :}$ 2 209 Recommended Questions $\text{It resembles alkali metals.}$, $\text{It shows the same reactions as halogens.}$... 3 Edit Delete
8712 $\text{The isotopes of hydrogen and their mass ratio are -}$ 2 209 Recommended Questions $\text{Protium, Deuterium, Tritium ; 3:2:3}$, $\text{Protium, Deuterium, Tritium ; 1:2:3}$... 2 Edit Delete
8711 $\text{The temporary and permanent hardness of water is caused by -}$ 2 209 Recommended Questions $\text{Permanent hardness is caused by hydrogen carbonates and temporary hardness is caused by chlorides.}$, $\text{Temporary hardness is caused by dihydrogen and permanent hardness is caused by oxides.}$... 4 Edit Delete
8710 $\text{An industrial method of preparation of Hydrogen peroxide is -}$ 2 209 Recommended Questions $\text{Action of H}_2\text{SO}_4\text{ on barium peroxide}$, $\text{Action of H}_2\text{SO}_4\text{ on sodium peroxide}$... 3 Edit Delete
8709 $\text{The incorrect statement among the following regarding reaction of H}_2\text{O}_2\text{ is -}$ 2 209 Recommended Questions $\text{S}^{-2}\rightarrow\text{S (acidic medium)}$, $\text{Pb}\rightarrow\text{PbSO}_4$... 3 Edit Delete
8708 $\text{The role of H}_2\text{O}_2\text{ when added to a solution containing KMnO}_4\text{ and H}_2\text{SO}_4\text{ is of-}$ 2 209 Recommended Questions $\text{An oxidizing agent}$, $\text{A reducing agent}$... 2 Edit Delete
8707 $\text{10 volumes of H}_2\text{O}_2 \text{ has a strength of approximately:}$ 2 209 Recommended Questions $3\%$, $30\%$... 1 Edit Delete
8706 $\text{H}_2\text{O}_2 \text{ is stored in:}$ 2 209 Recommended Questions $\text{Iron container after the addition of stabilizer}$, $\text{Glass container after the addition of stabilizer}$... 3 Edit Delete
8705 $\text{Reaction among the following where H}_2\text{O}_2 \text{ acts as a reducing agent is-}$ 2 209 Recommended Questions $\text{a, b}$, $\text{c, d}$... 4 Edit Delete
8704 $\text{The oxidation states of the most electronegative element in the products of the reaction between BaO}_2 \text{ with dil. H}_2\text{SO}_4 \text{ are-}$ 2 209 Recommended Questions $0, \text{ and } -1$, $-1, \text{ and } -2$... 2 Edit Delete
8703 $\text{Calcium carbide with heavy water generates-}$ 2 209 Recommended Questions $\text{Ca}(\text{OH})_2$, $\text{C}_2\text{D}_2$... 2 Edit Delete
8702 $\text{The correct statement among the following regarding H}_2\text{O}_2 \text{ is-}$ 2 209 Recommended Questions $\text{Two hydrogen atoms are connected to one oxygen atom.}$, $\text{All the four atoms are in the same plane.}$... 3 Edit Delete
8701 $\text{The following reaction is an example of:}$ $2\text{MnO}_4^- + 6\text{H}^+ + 5\text{H}_2\text{O}_2 \rightarrow 2\text{Mn}^{2+} + 8\text{H}_2\text{O} + 5\text{O}_2$ 2 209 Recommended Questions $\text{Hydrolysis reaction}$, $\text{Redox reaction}$... 2 Edit Delete
8700 $\text{The bleaching properties of H}_2\text{O}_2 \text{ are due to its:}$ 2 209 Recommended Questions $\text{Reducing properties}$, $\text{Oxidising properties}$... 2 Edit Delete
8699 $\text{Decolourisation of acidified potassium permanganate by H}_2\text{O}_2 \text{ is due to:}$ 2 209 Recommended Questions $\text{Oxidation of KMnO}_4$, $\text{Reduction of KMnO}_4$... 2 Edit Delete
8698 $\text{The reaction of aqueous KMnO}_4 \text{ with H}_2\text{O}_2 \text{ in acidic condition gives:}$ 2 209 Recommended Questions $\text{Mn}^{4+} \text{ and O}_2$, $\text{Mn}^{2+} \text{ and O}_2$... 2 Edit Delete
8697 $\text{The oxidising nature of H}_2\text{O}_2 \text{ is shown in the reaction-}$ 2 209 Recommended Questions $\text{H}_2\text{O}_2 + 2\text{KI} \rightarrow 2\text{KOH} + \text{I}_2$, $\text{Cl}_2 + \text{H}_2\text{O}_2 \rightarrow 2\text{HCl} + \text{O}_2$... 1 Edit Delete
8696 $\text{H}_2\text{O}_2 \text{ is prepared in the laboratory by the reaction of:}$ 2 209 Recommended Questions $\text{MnO}_2 \text{ with dilute cold } \text{H}_2\text{SO}_4$, $\text{BaO}_2 \text{ and } \text{CO}_2 \text{ bubbling through cold water}$... 2 Edit Delete
8695 $\text{On bubbling } \text{CO}_2 \text{ through a solution of barium peroxide in water:}$ 2 209 Recommended Questions $\text{O}_2 \text{ is formed}$, $\text{H}_2\text{CO}_3 \text{ is formed}$... 3 Edit Delete
8694 $\text{H}_2\text{O}_2 \text{ act as a reducing agent in:}$ 2 209 Recommended Questions $\text{Reaction with a ferrous salt.}$, $\text{Reaction with iodides.}$... 4 Edit Delete
8693 $\text{H}_2\text{O}_2 \text{ restores the colour of old lead paintings by:}$ 2 209 Recommended Questions $\text{Converting } \text{PbO}_2 \text{ to } \text{Pb}$, $\text{Oxidising } \text{PbS} \text{ to } \text{PbSO}_4$... 2 Edit Delete
8692 $\text{A compound that has both polar and non-polar bonds is –}$ 2 209 Recommended Questions $\text{NH}_4\text{Cl}$, $\text{HCN}$... 3 Edit Delete
8691 $\text{The incorrect statement among the following regarding }\text{H}_2\text{O}_2\text{ is -}$ 2 209 Recommended Questions $\text{It can only act as an oxidising agent}$, $\text{It decomposes on exposure to light}$... 1 Edit Delete
8690 $\text{The correct statement among the following regarding perhydrol is -}$ 2 209 Recommended Questions $\text{It is } 30\% \text{ H}_2\text{O}_2 \text{ or } 100 \text{ vol. H}_2\text{O}_2$, $\text{Its molarity is } 8.8 \text{ M}$... 4 Edit Delete
8689 $\text{For the bleaching of hair, the substance used is:}$ 2 209 Recommended Questions $\text{SO}_2$, $\text{Bleaching powder}$... 3 Edit Delete
8688 \text{The correct match among the following is -} \text{(a) CO}_{(g)} + \text{H}_2\text{}_{(g)} \quad \text{(i) Mg(HCO}_3\text{)}_2 + \text{Ca(HCO}_3\text{)}_2 \text{(b) Temporary hardness of water} \quad \text{(ii) An electron deficient hydride} \text{(c) B}_2\text{H}_6 \quad \text{(iii) Synthesis gas} \text{(d) H}_2\text{O}_2 \quad \text{(iv) Non-planar structure} 2 209 Recommended Questions $\text{(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)}$, $\text{(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)}$... 4 Edit Delete
8687 $\text{A compound that acts as both reducing and oxidising agent is-}$ 2 209 Recommended Questions $\text{H}_2\text{SO}_4$, $\text{H}_2\text{O}_2$... 2 Edit Delete
8686 $\text{H}_2\text{O}_2 \text{ acts as a -}$ 2 209 Recommended Questions $\text{Bleaching agent}$, $\text{Oxidising agent}$... 4 Edit Delete
8685 $\text{A compound that can remove both temporary and permanent hardness of water is -}$ 2 209 Recommended Questions $\text{NaHCO}_3$, $\text{Boiling}$... 4 Edit Delete
8684 $\text{The formula of exhausted permutit is -}$ 2 209 Recommended Questions $\text{K}_2\text{Al}_2\text{Si}_2\text{O}_8 \cdot x\text{H}_2\text{O}$, $\text{CaAl}_2\text{Si}_2\text{O}_8 \cdot x\text{H}_2\text{O}$... 2 Edit Delete
8683 $\text{Exhausted permutit does not contain -}$ 2 209 Recommended Questions $\text{Na}^+ \text{ ion}$, $\text{Mg}^{2+} \text{ ion}$... 1 Edit Delete
8682 $\text{The incorrect statement among the following options is:}$ 2 209 Recommended Questions $\text{K}^+ \text{ ions react with alkaline water and give K(OH)}_3$, $\text{KCl is a salt of strong acid and strong base.}$... 1 Edit Delete
8681 $\text{A 1000 g aqueous solution of CaCO}_3 \text{ contains 10 g of calcium carbonate. The hardness of the solution is:}$ 2 209 Recommended Questions $10 \text{ ppm}$, $100 \text{ ppm}$... 4 Edit Delete
8680 $\text{When zeolites (hydrated sodium aluminum silicate) is treated with hard water,}$ $\text{the sodium ions are exchanged with:}$ 2 209 Recommended Questions $\text{H}^+\text{ ion}$, $\text{Ca}^{2+}\text{ ion}$... 2 Edit Delete
8679 $\text{Permutit is chemically known as:}$ 2 209 Recommended Questions $\text{Hydrated sodium aluminium silicate}$, $\text{Sodium hexa meta-phosphate}$... 1 Edit Delete
8678 $\text{The method used to remove the temporary hardness of water is-}$ 2 209 Recommended Questions $\text{Synthetic resins method}$, $\text{Calgon's method}$... 3 Edit Delete
8677 $\text{A water softening reagent among the following is -}$ 2 209 Recommended Questions $\text{Ca}_3(\text{PO}_4)_2$, $\text{Na}_3\text{PO}_4$... 3 Edit Delete
8676 $\text{Hardness of water cannot be removed by -}$ 2 209 Recommended Questions $\text{Clark's method}$, $\text{Adding washing soda}$... 4 Edit Delete
8675 $\text{The softening of hard water by synthetic ion-exchange resins is based on -}$ 2 209 Recommended Questions $\text{Increasing the lattice energy.}$, $\text{Physical separation.}$... 4 Edit Delete
8674 $\text{Match the items in Column I with the relevant items in Column II.}$ $\text{Column I}$ $\text{A. Hydrogen peroxide is used as a}$ $\text{B. Used in Calgon method}$ $\text{C. Temporary hardness of hard water is removed by}$ $\text{Column II}$ $\text{1. Sodium hexametaphosphate}$ $\text{2. Clark's method}$ $\text{3. Reducing agent}$ 2 209 Recommended Questions $\text{A-3, B-2, C-1}$, $\text{A-1, B-2, C-3}$... 3 Edit Delete
8673 \text{Match the column:-} \text{Column I} \qquad \text{Column II} \text{A. Heavy water} \qquad \text{P. Bicarbonates of Ca and Mg} \text{B. Temporary hardness} \qquad \text{Q. No foreign ions} \text{C. Soft water} \qquad \text{R. } \text{D}_2\text{O} \text{D. Permanent Hardness} \qquad \text{S. Sulphates of Ca and Mg} 2 209 Recommended Questions $\text{A-S, B-P, C-Q, D-R}$, $\text{A-R, B-P, C-Q, D-S}$... 2 Edit Delete
8672 $\text{The freezing point of heavy water in comparison to normal water is -}$ 2 209 Recommended Questions $\text{Higher}$, $\text{Lower}$... 1 Edit Delete
8671 $\text{The correct classification of }\text{H}_2\text{O}, \text{B}_2\text{H}_6, \text{ and }\text{NaH}\text{ respectively is-}$ 2 209 Recommended Questions {Covalent, Covalent, & Covalent.}, {Covalent, Covalent, & Ionic.}... 2 Edit Delete
8670 $\text{The hydride formed by an element having valence shell electronic configuration } 3d^6 4s^2 \text{ is -}$ 2 209 Recommended Questions $\text{Saline hydride.}$, $\text{Electron rich hydride.}$... 4 Edit Delete
8669 $\text{The correct order of increasing electrical conductance is -}$ 2 209 Recommended Questions $\text{BeH}_2 > \text{CaH}_2 > \text{TiH}_2$, $\text{BeH}_2 < \text{CaH}_2 > \text{TiH}_2$... 4 Edit Delete
8668 $\text{The hydrides of carbon } (\text{C}_n\text{H}_{2n+2}) \text{ can act as -}$ 2 209 Recommended Questions $\text{Lewis acid.}$, $\text{Lewis base.}$... 4 Edit Delete
8667 $\text{“Non-stoichiometric hydrides” are :}$ 2 209 Recommended Questions $\text{Hydrogen-deficient compounds formed by the reaction of a hydrogen atom}$ $\text{with d-block and f-block elements.}$, $\text{Hydrogen-deficient compounds formed by the reaction of dihydrogen with}$ $\text{d-block and f-block elements.}$... 2 Edit Delete
8666 $\text{A molten ionic hydride on electrolysis gives:}$ 2 209 Recommended Questions $\text{H}^+ \text{ ion moving towards the cathode.}$, $\text{H}^+ \text{ ion moving towards the anode.}$... 3 Edit Delete
8665 $\text{Metallic hydrides are useful for hydrogen storage because :}$ 2 209 Recommended Questions $\text{Metallic hydrides are oxygen-rich.}$, $\text{Metallic hydrides are oxygen-deficient.}$... 4 Edit Delete
8664 $\text{The correct order of increasing reducing nature is -}$ 2 209 Recommended Questions $\text{NaH} > \text{H}_2\text{O} < \text{MgH}_2$, $\text{H}_2\text{O} > \text{MgH}_2 > \text{NaH}$... 3 Edit Delete
8663 $\text{Ionic hydrides react with water to give:}$ 2 209 Recommended Questions $\text{Acidic solutions.}$, $\text{Basic solutions.}$... 2 Edit Delete
8662 $\text{Atomic hydrogen or oxy-hydrogen torch is used for cutting and welding purposes because:}$ 2 209 Recommended Questions $\text{Atomic hydrogen converts into molecular hydrogen and generates a large amount of energy.}$, $\text{Atomic hydrogen converts into molecular hydrogen and generates a low amount of energy.}$... 1 Edit Delete
8661 $\text{Hydrogen combines directly with:}$ 2 209 Recommended Questions $\text{Ca}$, $\text{Cu}$... 1 Edit Delete
8660 $\text{Covalent hydride among the following is -}$ 2 209 Recommended Questions $\text{NH}_3 \text{ and } \text{B}_2\text{H}_6$, $\text{CaH}_2 \text{ and } \text{B}_2\text{H}_6$... 1 Edit Delete
8659 $\text{The group that has hydride formed by only one member is -}$ 2 209 Recommended Questions $6$, $7$... 1 Edit Delete
8658 $\text{Ionic hydrides are formed by:}$ 2 209 Recommended Questions $\text{Transition metals.}$, $\text{Elements of very high electropositivity.}$... 2 Edit Delete
8657 $\text{The correct statement about electron-deficient hydride is that it:}$ 2 209 Recommended Questions $\text{Does not have sufficient electrons to form a regular bond.}$, $\text{Cannot be represented by conventional Lewis structures.}$... 4 Edit Delete
8656 $\text{CO}_2 \text{ is used as a fire extinguisher because -}$ 2 209 Recommended Questions $\text{CO}_2 \text{ has high lattice energy.}$, $\text{CO}_2 \text{ will be effective in isolating the burning surface from dihydrogen and dioxygen.}$... 2 Edit Delete
8655 $\text{Correlate the items listed in Column I with those listed in Column II.}$ $\text{Column I} \qquad \text{Column II}$ $\text{A. Synthesis gas} \qquad 1.\text{ Na}_2[\text{Na}_4(\text{PO}_3)_6]$ $\text{B. Heavy water} \qquad 2.\text{ Mixture of CO and H}_2$ $\text{C. Calgon} \qquad 3.\text{ Prolonged electrolysis of water}$ $\text{D. Salt like hydrides} \qquad 4.\text{ Stoichiometric compounds of s-block elements}$ 2 209 Recommended Questions $\text{A-4, B-3, C-2, D-1}$, $\text{A-2, B-3, C-1, D-4}$... 2 Edit Delete
8654 $\text{Fe} + \text{H}_2\text{O} \xrightarrow{1023-1073\text{K}} \text{Product}$ $\left(\text{Steam}\right)$ $\text{Product formed is -}$ 2 209 Recommended Questions $\text{FeO} + \text{H}_2$, $\text{Fe}_2\text{O}_3 + \text{H}_2\text{O}$... 4 Edit Delete
8653 $\text{Hydrogen adsorbed on palladium is known as:}$ 2 209 Recommended Questions $\text{Atomic H}$, $\text{Nascent H}$... 3 Edit Delete
8652 $\text{A compound among the following that has hydrogen in the atomic state is -}$ 2 209 Recommended Questions $\text{Metallic hydrides}$, $\text{Ionic hydrides}$... 1 Edit Delete
8651 $\text{The first ionization energy value (kJ) mol}^{-1} \text{ for H, Li, F, and Na is given below but not in a correct order}$ $1681, 520, 1312, 495.$ $\text{The ionization energy value of H would be -}$ 2 209 Recommended Questions $1681$, $1312$... 2 Edit Delete
8650 $\text{Ice melts at a temperature lower than its usual melting point when the pressure is increased. This is because-}$ 2 209 Recommended Questions $\text{Ice has less density than water}$, $\text{Pressure generates heat}$... 1 Edit Delete
8649 $\text{When substance A reacts with water, it produces a combustible gas B and a}$ $\text{solution of substances 'C' in water. When another substance 'D' reacts with this}$ $\text{solution of C, it produces the same gas 'B' on warming but 'D' can produce gas}$ $\text{'B' on reaction with dilute sulphuric acid at room temperature. 'A' imparts a}$ $\text{deep golden yellow colour to a smokeless flame of a bunsen burner. A, B, C}$ $\text{and D respectively are -}$ 2 209 Recommended Questions $\text{Na, H}_2, \text{NaOH, Zn}$, $\text{K, H}_2, \text{KOH, Al}$... 1 Edit Delete
8648 $\text{The correct statement among the following regarding hydrogen is-}$ 2 209 Recommended Questions $\text{It can form a bond in +1 as well as -1 oxidation state}$, $\text{It is always collected at the cathode}$... 1 Edit Delete
8647 $\text{The products obtained on the completion of the following reactions (i) and (ii)}$ $\text{respectively are :}$ $\text{i. }\text{C}_3\text{H}_{8\text{(g)}} + 3\text{H}_2\text{O}_{\text{(g)}} \xrightarrow{\substack{\Delta \\ \text{Catalyst} \\ \text{Heat}}} \text{A}$ $\text{ii. }\text{Zn}_{\text{(s)}} + \text{NaOH}_{\text{(aq)}} \xrightarrow{\text{Heat}} \text{B}$ 2 209 Recommended Questions $\text{A = CO, and H}_2\text{; B = Na}_2\text{ZnO}_2$, $\text{A = CO}_2\text{; B = Na}_4\text{ZnO}_4$... 1 Edit Delete
8646 $\text{The most abundant isotope of hydrogen is-}$ 2 209 Recommended Questions $\text{Tritium}$, $\text{Deuterium}$... 3 Edit Delete
8645 $\text{The role of an electrolyte in the preparation of }\text{H}_2\text{ by electrolytic method is:}$ 2 209 Recommended Questions $\text{It lowers the availability of ions available in the process for the conduction}$ $\text{of electricity.}$, $\text{It makes the ions available in the process for conduction of electricity.}$... 2 Edit Delete
8644 $\text{Para hydrogen is-}$ 2 209 Recommended Questions $\text{Less stable than ortho hydrogen.}$, $\text{More stable than ortho hydrogen.}$... 1 Edit Delete
8643 $\text{An isotope that is used as a tracer in a chemical reaction is-}$ 2 209 Recommended Questions $\text{H}_1^1$, $\text{H}_1^2$... 3 Edit Delete
8642 $\text{The incorrect statement among the following regarding hydrogen is -}$ 2 209 Recommended Questions $\text{Hydrogen never acts as a cation in ionic salts}$, $\text{Hydronium ion, } \text{H}_3\text{O}^+\text{, exists freely in a solution}$... 3 Edit Delete
8641 $\text{The catalyst used to increase the production of }\text{H}_2\text{, by 'coal gasification'}$ $\text{process is -}$ 2 209 Recommended Questions $\text{Copper}$, $\text{FeCr}_2\text{O}_4\text{ (iron chromate)}$... 2 Edit Delete
8640 $\text{The correct statement about the electrolysis of an aqueous solution of AgNO}_3 \text{ with Ag electrode is:}$ 2 208 Recommended Questions $\text{Ag}^+ \text{ ion gets oxidised at cathode; Ag(s) is reduced at anode.}$, $\text{H}_2\text{O gets reduced at cathode; H}_2\text{O gets oxidised at anode.}$... 4 Edit Delete
8639 $\text{From the following, identify the reaction having the top position in the EMF series (standard reduction potential) according to their electrode potential at 298 K.}$ 2 208 Recommended Questions $\text{Mg}^{2+} + 2\text{e}^- \rightarrow \text{Mg}_{(\text{s})}$, $\text{Fe}^{2+} + 2\text{e}^- \rightarrow \text{Fe}_{(\text{s})}$... 3 Edit Delete
8638 $\text{In the reaction:}$ $\text{Al} + \text{Fe}_3\text{O}_4 \rightarrow \text{Al}_2\text{O}_3 + \text{Fe}$ $\text{How many electrons are transferred in total during the reaction?}$ 2 208 Recommended Questions $6$, $8$... 4 Edit Delete
8637 $\text{Consider the given data:}$ $\text{E}_{\text{Fe}^{3+}/\text{Fe}^{2+}} = 0.77; \text{E}_{\text{I}^-/\text{I}_2} = -0.54$ $\text{E}_{\text{Ag}^+/\text{Ag}} = 0.80; \text{E}_{\text{Cu}/\text{Cu}^{2+}} = -0.34$ $\text{E}_{\text{Fe}^{3+}/\text{Fe}^{2+}} = 0.77; \text{E}_{\text{Cu}/\text{Cu}^{2+}} = -0.34$ $\text{E}_{\text{Ag}/\text{Ag}^+} = -0.80; \text{E}_{\text{Fe}^{3+}/\text{Fe}^{2+}} = 0.77$ $\text{Using the electrode potential values given above, identify the reaction which is not feasible:}$ 2 208 Recommended Questions $\text{Fe}^{3+}_{(\text{aq})} \text{ and I}^-_{\text{aq})}$, $\text{Ag}^+_{(\text{aq})} \text{ and Cu}_{(\text{s})}$... 4 Edit Delete
8636 $\text{In the given reaction,}$ $x\text{BrO}_3^- + y\text{Cr}^{+3} + z\text{H}_2\text{O} \rightarrow \text{Br}_2 + \text{CrO}_4^{2-} + \text{H}^+$ $\text{The coefficients x, y, and z are respectively-}$ 2 208 Recommended Questions $6, 10, 11$, $6, 10, 20$... 4 Edit Delete
8635 $\text{Using the standard electrode potentials of the redox couples given below, which of the following is the strongest oxidizing agent?}$ $\text{E}^\circ \text{ values : Fe}^{3+}/\text{Fe}^{2+} = +0.77\text{ V}$ $\text{I}_2\text{(s)}/\text{I}^- = +0.54\text{ V}$ $\text{Cu}^{2+}/\text{Cu} = +0.34\text{ V}$ $\text{Ag}^+/\text{Ag} = 0.80\text{ V}$ 2 208 Recommended Questions $\text{Fe}^{3+}$, $\text{I}_2\text{(s)}$... 4 Edit Delete
8634 $\text{Given below are two statements:}$ $\text{Assertion (A): Among halogens, fluorine is the best oxidant.}$ $\text{Reason (R): Fluorine is the most electronegative atom.}$ 2 208 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8633 \text{Given: } \text{E}^\circ_{\text{Cl}_2/\text{Cl}^-} = 1.36 \text{ V}, \text{E}^\circ_{\text{Cr}^{3+}/\text{Cr}} = -0.74 \text{ V} \text{E}^\circ_{\text{Cr}_2\text{O}_7^{2-}/\text{Cr}^{3+}} = 1.33 \text{ V}, \text{E}^\circ_{\text{MnO}_4^-/\text{Mn}^{2+}} = 1.51 \text{ V} \text{Among the following, the strongest reducing agent is:} 2 208 Recommended Questions $\text{Mn}^{2+}$, $\text{Cr}^{3+}$... 4 Edit Delete
8632 $\text{The strongest oxidizing agent is the one which gets reduced most easily (as oxidizing agent itself gets reduced while oxidizing other species) or in other words, has the highest reduction potential.}$ $\text{During reduction,}$ $\text{Oxidized form} + n\text{e}^- \rightarrow \text{Reduced form}$ $\text{Take note that the species which have lower reduction potential are stronger reducing agents while the species which have higher reduction potential are stronger oxidizing agents.}$ $[\text{Fe}(\text{CN})_6]^{3-} + \text{e}^- \rightarrow [\text{Fe}(\text{CN})_6]^{4-} ; \text{E}^\circ = 0.35\text{ V}$ $\text{Fe}^{3+} + \text{e}^- \rightarrow \text{Fe}^{2+} ; \text{E}^\circ = 0.77\text{ V}$ $\text{Here Fe}^{+3} \text{ has the highest reduction potential of 0.77 V. Hence, Fe}^{3+} \text{ is strongest oxidizing agent.}$ $\text{The strongest oxidizing agent in the above equation is:}$ 2 208 Recommended Questions $[\text{Fe}(\text{CN})_6]^{4-}$, $\text{Fe}^{2+}$... 3 Edit Delete
8631 $\text{A solution contains Fe}^{2+}, \text{Fe}^{3+} \text{ and I}^- \text{ ions. This solution was treated with iodine at 35}^\circ\text{C. E}^\circ \text{ for Fe}^{3+}/\text{Fe}^{2+} \text{ is +0.77 V and E}^\circ \text{ for I}_2/2\text{I}^- = 0.536\text{ V.}$ $\text{The favourable redox reaction is:}$ 2 208 Recommended Questions $\text{Fe}^{2+} \text{ will be oxidized to Fe}^{3+}.$, $\text{I}_2 \text{ will be reduced to I}^-.$... 4 Edit Delete
8630 $\text{The correct statement about the electrolysis of an aqueous solution of AgNO}_3 \text{ with Pt electrode is:}$ 2 208 Recommended Questions $\text{Pt(s) gets oxidized at cathode whereas Ag}^+\text{(aq) gets reduced at anode}$, $\text{Ag}^+\text{(aq) gets reduced at cathode and is oxidized at anode}$... 3 Edit Delete
8629 $\text{E}^\Theta \text{ values of some redox couples are given below. On the basis of these values choose the correct option.}$ $\text{E}^\Theta \text{ values : Br}_2/\text{Br}^- = +1.90$ $\text{Ag}^+/\text{Ag}_{(\text{s})} = +0.80$ $\text{Cu}^{2+}/\text{Cu}_{(\text{s})} = +0.34;$ {I}_2_{(\text{s})}/\text{I}^- = +0.54$ 2 208 Recommended Questions $\text{Cu will reduce Br}^-$, $\text{Cu will reduce Ag}$... 4 Edit Delete
8628 $\text{The correct statement about electrolysis of an aqueous solution of CuCl}_2 \text{ with Pt electrode is-}$ 2 208 Recommended Questions $\text{Cu}^{2+} \text{ ion reduced at the cathode; Cl}^- \text{ ion oxidized at the anode}$, $\text{Cu}^{2+} \text{ ion reduced at the anode; Cl}^- \text{ ion oxidized at the cathode}$... 1 Edit Delete
8627 $\text{Based on standard electrode potentials given above, the correct arrangement for increasing order of reducing power of elements is:}$ $\text{(a) } E^o_{K^+/K} = -2.93 \text{ V}; E^o_{Ag^+/Ag} = 0.80 \text{ V}$ $\text{(b) } E^o_{Hg^{2+}/Hg} = 0.79 \text{ V}; E^o_{Mg^{2+}/Mg} = -2.37 \text{ V}$ $\text{(c) } E^o_{Cr^{3+}/Cr} = -0.74 \text{ V}$ 2 208 Recommended Questions $\text{Ag} < \text{Hg} < \text{Cr} < \text{Mg} < \text{K}$, $\text{Ag} > \text{Cr} > \text{Mg} > \text{Hg} > \text{K}$... 1 Edit Delete
8626 $\text{The standard electrode potential (E}^\circ\text{) values of Al}^{3+}\text{/ Al, Ag}^+\text{ / Ag, K}^+\text{ / K, and Cr}^{3+}\text{ / Cr are -1.66 V, 0.80 V, -2.93 V \& -0.79 V respectively. The correct decreasing order of the reducing power of the metal is:}$ 2 208 Recommended Questions $\text{Ag} > \text{Cr} > \text{Al} > \text{K}$, $\text{K} > \text{Al} > \text{Cr} > \text{Ag}$... 2 Edit Delete
8625 $\text{The correct statement about the given reaction is-}$ $(\text{CN})_2\text{(g)} + 2\text{OH}^-\text{(aq)} \rightarrow \text{CN}^-\text{(aq)} + \text{CNO}^-\text{(aq)} + \text{H}_2\text{O}\text{(l)}$ 2 208 Recommended Questions $\text{The reaction is an example of a disproportionation reaction.}$, $\text{Hydrogen atom gets oxidized.}$... $\text{The reaction is an example of a disproportionation reaction.}$ Edit Delete
8624 $\text{The strongest oxidising agent among the following is :}$ 2 208 Recommended Questions $\text{BrO}_3^- / \text{Br}^{2+}, E^o = +1.50$, $\text{Fe}^{3+} / \text{Fe}^{2+}, E^o = +0.76$... 3 Edit Delete
8623 $\text{The Mn}^{3+} \text{ ion is unstable in solution and undergoes disproportionation reaction to give Mn}^{2+}\text{, MnO}_2 \text{ and H}^+ \text{ ion. The balanced ionic equation for the reaction is-}$ 2 208 Recommended Questions $2\text{Mn}^{3+}_{(aq)} + 2\text{H}_2\text{O}_{(l)} \rightarrow \text{MnO}_{2(s)} + \text{Mn}^{2+}_{(aq)} + 4\text{H}^+_{(aq)}$, $\text{Mn}^{3+}_{(aq)} + \text{H}_2\text{O}_{(l)} \rightarrow \text{MnO}_{2(s)} + 2\text{Mn}^{2+}_{(aq)} + 4\text{H}^+_{(aq)}$... 1 Edit Delete
8622 \text{Standard reduction potentials of the half-reactions are given below:} \text{F}_2\text{(g)} + 2e^- \rightarrow 2\text{F}^-\text{(aq)} ; E^\circ = +2.85 \text{ V} \text{Cl}_2\text{(g)} + 2e^- \rightarrow 2\text{Cl}^-\text{(aq)} ; E^\circ = +1.36 \text{ V} \text{Br}_2\text{(g)} + 2e^- \rightarrow 2\text{Br}^-\text{(aq)} ; E^\circ = +1.06 \text{ V} \text{I}_2\text{(g)} + 2e^- \rightarrow 2\text{I}^-\text{(aq)} ; E^\circ = +0.53 \text{ V} \text{The strongest oxidizing and reducing agents, respectively, are:} 2 208 Recommended Questions $\text{Br}_2 \text{ and Cl}^-$, $\text{Cl}_2 \text{ and Br}^-$... 4 Edit Delete
8621 $\text{The number of moles of MnO}_4^- \text{ required to oxidise one mole of ferrous oxalate completely in an acidic medium is-}$ 2 208 Recommended Questions $0.6 \text{ mole}$, $0.4 \text{ mole}$... 1 Edit Delete
8620 $\text{The set of metals that can show disproportionation reaction is:}$ 2 208 Recommended Questions $\text{Cu, Na, Li}$, $\text{Mg, F, Ne}$... 4 Edit Delete
8619 $\text{Given below are two statements:}$ $\text{Assertion (A): In the reaction between potassium permanganate and potassium iodide, permanganate ions act as an oxidising agent.}$ $\text{Reason (R): The oxidation state of manganese changes from +2 to +7 during the reaction.}$ 2 208 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8618 $\text{The oxidising agent and reducing agent in the given reaction are}$ $5\text{P}_4\text{(s)} + 12\text{H}_2\text{O}\text{(l)} + 12\text{HO}^-\text{(aq)} \rightarrow 8\text{PH}_3\text{(g)} + 12\text{HPO}_2^-\text{(aq)}$ 2 208 Recommended Questions $\text{Oxidising agent = P}_4\text{; Reducing agent = P}_4$, $\text{Oxidising agent = P}_4\text{; Reducing agent = H}_2\text{O}$... 1 Edit Delete
8617 $\text{Given below are two statements:}$ $\text{Assertion (A): The decomposition of hydrogen peroxide to form water and oxygen is an example of a disproportionation reaction.}$ $\text{Reason (R): The oxygen of peroxide is in -1 oxidation state and it is converted to zero oxidation state in O}_2 \text{ and -2 oxidation state in H}_2\text{O.}$ 2 208 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8616 $\text{In the conversion, } \text{H}_2\text{SO}_4 \rightarrow \text{H}_2\text{S}_2\text{O}_8 \text{ which process occurs?}$ 2 208 Recommended Questions $\text{Oxidation}$, $\text{Reduction}$... 1 Edit Delete
8615 $\text{In the given reaction, what is the name of the species that bleaches the substances due to its oxidising action?}$ $\text{Cl}_2\text{(g)} + 2\text{OH}^-\text{(aq)} \rightarrow \text{ClO}^-\text{(aq)} + \text{Cl}^-\text{(aq)} + \text{H}_2\text{O}\text{(l)}$ 2 208 Recommended Questions $\text{ClO}^-$, $\text{Cl}_2$... 1 Edit Delete
8614 $\text{In the reactions given below, thiosulphate reacts differently with iodine than with bromine.}$ $2\text{S}_2\text{O}_3^{2-} + \text{I}_2 \rightarrow \text{S}_4\text{O}_6^{2-} + 2\text{I}^{-}$ $\text{S}_2\text{O}_3^{2-} + 2\text{Br}_2 + 5\text{H}_2\text{O} \rightarrow 2\text{SO}_4^{2-} + 2\text{Br}^{-} + 10\text{H}^{+}$ $\text{Choose the statements among the following that best describe the above dual behaviour of thiosulphate.}$ 2 208 Recommended Questions $\text{Bromine is a stronger oxidant than iodine.}$, $\text{Bromine is a weaker oxidant than iodine.}$... 1 Edit Delete
8613 $\text{Which of the following does not represent a redox reaction?}$ 2 208 Recommended Questions $\text{Cr}_2\text{O}_7^{2-} + 2\text{OH}^- \rightarrow \text{CrO}_4^{2-} + \text{H}_2\text{O}$, $\text{SO}_4^{2-} + 2\text{I}^- + 2\text{H}^+ \rightarrow \text{I}_2 + \text{H}_2\text{S} + \text{H}_2\text{O}$... 1 Edit Delete
8612 $\text{The compound having oxygen in } -1 \text{ oxidation state is:-}$ 2 208 Recommended Questions $\text{H}_2\text{O}$, $\text{O}_2\text{F}_2$... 4 Edit Delete
8611 $\text{Which of the following does not represent a redox reaction?}$ 2 208 Recommended Questions $\text{Cr}_2\text{O}_7^{2-} + 2\text{OH}^- \rightarrow \text{CrO}_4^{2-} + \text{H}_2\text{O}$, $\text{SO}_4^{2-} + 2\text{I}^- + 2\text{H}^+ \rightarrow \text{I}_2 + \text{H}_2\text{S} + \text{H}_2\text{O}$... 1 Edit Delete
8610 $\text{Identify the disproportionation reaction among the following:}$ 2 208 Recommended Questions $\text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O}$, $\text{CH}_4 + 4\text{Cl}_2 \rightarrow \text{CCl}_4 + 4\text{HCl}$... 4 Edit Delete
8609 $\text{Reducing agent among the following is -}$ 2 208 Recommended Questions $\text{HNO}_3$, $\text{KMnO}_4$... 4 Edit Delete
8608 $\text{The highest oxidation number of nitrogen among the following compounds is:}$ 2 208 Recommended Questions $\text{N}_2\text{H}_4$, $\text{NH}_3$... 3 Edit Delete
8607 $\text{The oxidation number of phosphorous in ATP (adenosine triphosphate) is -}$ 2 208 Recommended Questions $2$, $3$... 4 Edit Delete
8606 $\text{The correct order of N-compounds in its decreasing order of oxidation states is:}$ 2 208 Recommended Questions $\text{HNO}_3\text{, NO, N}_2\text{, NH}_4\text{Cl}$, $\text{HNO}_3\text{, NO, NH}_4\text{Cl, N}_2$... 1 Edit Delete
8605 $\text{Which is the correct set that can only act as an oxidant?}$ 2 208 Recommended Questions $\text{NO}_3^-, \text{SO}_3, \text{Na}$, $\text{Fe}^{+3}, \text{NO}_3^-, \text{SO}_3$... 2 Edit Delete
8604 $\text{Sn}^{++} \text{ loses two electrons in a reaction. The final oxidation number of tin will be:}$ 2 208 Recommended Questions $+2$, $\text{Zero}$... 3 Edit Delete
8603 $\text{Among the following hydrohalic compounds, the best reductant is -}$ 2 208 Recommended Questions $\text{HCl}$, $\text{HBr}$... 3 Edit Delete
8602 $\text{The oxidation number of S in } \text{H}_2\text{S}_2\text{O}_8 \text{ is:}$ 2 208 Recommended Questions $+2$, $+4$... 3 Edit Delete
8601 $\text{The oxidation number of phosphorus in } \text{Ba}(\text{H}_2\text{PO}_2)_2 \text{ is-}$ 2 208 Recommended Questions $-1$, $+1$... 2 Edit Delete
8600 $\text{The oxidation state of Cr in } \text{CrO}_6 \text{ is -}$ 2 208 Recommended Questions $-6$, $+12$... 3 Edit Delete
8599 $\text{The change in oxidation number of chlorine when } \text{Cl}_2 \text{ gas reacts with hot and concentrated sodium hydroxide solution is:}$ 2 208 Recommended Questions $\text{Zero to +1 and Zero to -5}$, $\text{Zero to -1 and Zero to +5}$... 2 Edit Delete
8598 $\text{The incorrect statement regarding the rule to find the oxidation number among the following is:}$ 2 208 Recommended Questions $\text{The oxidation number of hydrogen is always } +1\text{.}$, $\text{The algebraic sum of all the oxidation numbers carried by elements in a compound is zero.}$... 1 Edit Delete
8597 $\text{The oxidation number of the atom (in bold) in the following species is given. Identify, which one is incorrectly related?}$ 2 208 Recommended Questions $\text{Cu}_2\text{O} \text{ is } -1$, $\text{ClO}_3^- \text{ is } +5$... 1 Edit Delete
8596 $\text{The oxidising agent and reducing agent in the given reaction are:}$ $\text{Cl}_2\text{O}_{7(g)} + 4\text{H}_2\text{O}_{2(aq)} + 2\text{OH}^{-}_{(\text{aq})} \rightarrow 2\text{ClO}_{2(aq)}^{-} + 4\text{O}_{2(g)} + 5\text{H}_2\text{O}_{(l)}$ 2 208 Recommended Questions $\text{Oxidizing agent } = \text{H}_2\text{O}_2\text{; Reducing agent } = \text{Cl}_2\text{O}_7$, $\text{Oxidizing agent } = \text{Cl}_2\text{O}_7\text{; Reducing agent } = \text{H}_2\text{O}_2$... 2 Edit Delete
8595 \text{The oxidizing agent and reducing agent in the given reaction are:} 3\text{N}_2\text{H}_4\text{(l)} + 4\text{ClO}_3^-\text{(aq)} \rightarrow 6\text{NO}\text{(g)} + 4\text{Cl}^-\text{(aq)} + 6\text{H}_2\text{O}\text{(l)} 2 208 Recommended Questions $\text{Oxidising agent = N}_2\text{H}_4\text{; Reducing agent = ClO}_3^-$, $\text{Oxidising agent = ClO}_3^-\text{; Reducing agent = N}_2\text{H}_4$... 2 Edit Delete
8594 $\text{What is the alteration in the oxidation state of carbon in the given reaction?}$ $\text{CH}_{4(g)} + 4\text{Cl}_{2(g)} \rightarrow \text{CCl}_{4(l)} + 4\text{HCl}_{(g)}$ 2 208 Recommended Questions $0 \text{ to } +4$, $-4 \text{ to } +4$... 2 Edit Delete
8593 $\text{Oxidation number of oxygen in potassium super oxide (KO}_2\text{) is:}$ 2 208 Recommended Questions $-2$, $-1$... 3 Edit Delete
8592 $\text{Among the following, identify the species with an atom in } +6 \text{ oxidation state-}$ 2 208 Recommended Questions $\text{MnO}_4^{-}$, $\text{Cr}(\text{CN})_6^{3-}$... 4 Edit Delete
8591 $\text{The element that does not show a disproportionation tendency is/are:}$ 2 208 Recommended Questions $\text{Cl}$, $\text{Br}$... 3 Edit Delete
8590 \text{The correct statement(s) about the given reaction is -} \text{XeO}_6^{4-}\text{(aq)} + 2\text{F}^-\text{(aq)} + 6\text{H}^+\text{(aq)} \rightarrow \text{XeO}_3\text{(g)} + \text{F}_2\text{(g)} + 3\text{H}_2\text{O}\text{(l)} 2 208 Recommended Questions $ \text{XeO}_6^{4-} \text{ oxidises F}^- $, $ \text{The oxidation number of F increases from -1 to zero} $... 4 Edit Delete
8589 $\text{The oxidation states of P in } \text{H}_4\text{P}_2\text{O}_5, \text{H}_4\text{P}_2\text{O}_6, \text{H}_4\text{P}_2\text{O}_7, \text{ are respectively -}$ 2 208 Recommended Questions $+3, +5, +4$, $+5, +3, +4$... 4 Edit Delete
8588 $ \text{Among the following the correct order of acidity is-} $ 2 208 Recommended Questions $ \text{HClO} < \text{HClO}_2 < \text{HClO}_3 < \text{HClO}_4 $, $ \text{HClO}_2 < \text{HClO} < \text{HClO}_3 < \text{HClO}_4 $... 1 Edit Delete
8587 $\text{The oxidation number of oxygen in } \text{KO}_3 \text{ and } \text{Na}_2\text{O}_2 \text{ is respectively -}$ 2 208 Recommended Questions $3, \text{ and } 2$, $1, \text{ and } 0$... 4 Edit Delete
8586 $ \text{Which of the following arrangements represents the increasing oxidation number of the central atom?} $ 2 208 Recommended Questions $ \text{CrO}_2^-, \text{ClO}_3^-, \text{CrO}_4^{2-}, \text{MnO}_4^- $, $ \text{ClO}_3^-, \text{CrO}_4^{2-}, \text{MnO}_4^-, \text{CrO}_2^- $... 1 Edit Delete
8585 $\text{The oxidation number of carbon in } \text{C}_3\text{O}_2 \text{ and } \text{Mg}_2\text{C}_3 \text{ are respectively:}$ 2 208 Recommended Questions $-\frac{4}{3}, +\frac{4}{3}$, $+\frac{4}{3}, -\frac{4}{3}$... 2 Edit Delete
8584 $ \text{The oxidation number of P in Mg}_2\text{P}_2\text{O}_7 \text{ is -} $ 2 208 Recommended Questions $ +3 $, $ +2 $... 3 Edit Delete
8583 $\text{The oxidation number of carbon in } \text{C}_3\text{O}_2 \text{ and } \text{Mg}_2\text{C}_3 \text{ are respectively:}$ 2 208 Recommended Questions $-\frac{4}{3}, +\frac{4}{3}$, $+\frac{4}{3}, -\frac{4}{3}$... 1 Edit Delete
8582 $ \text{Which of the following is not an intramolecular redox reaction?} $ 2 208 Recommended Questions $ \text{NH}_4\text{NO}_2 \rightarrow \text{N}_2 + 2\text{H}_2\text{O} $, $ 2\text{Mn}_2\text{O}_7 \rightarrow 4\text{MnO}_2 + 3\text{O}_2 $... 4 Edit Delete
8581 $\text{In an alkaline medium } \text{ClO}_2 \text{ oxidize } \text{H}_2\text{O}_2 \text{ in } \text{O}_2 \text{ and reduces itself in } \text{Cl}^-. \text{ How many moles of } \text{H}_2\text{O}_2 \text{ will be oxidized by one mole of } \text{ClO}_2?$ 2 208 Recommended Questions $1.0$, $1.5$... 3 Edit Delete
8580 $\text{The maximum weight of nitric oxide that can be obtained starting only with 10.00 g of ammonia and 20.00 g of oxygen is:}$ 2 208 Recommended Questions $9 \text{ g}$, $15 \text{ g}$... $15 \text{ g}$ Edit Delete
8579 $\text{Balance the following equation and choose the quantity that is the sum of the coefficients of reactants and products:}$ $\ldots\text{PtCl}_4 + \ldots\text{XeF}_2 \rightarrow \text{PtF}_6 + \ldots\text{ClF} + \ldots\text{Xe}$ 2 208 Recommended Questions $16$, $13$... 1 Edit Delete
8578 \text{Balance the following reaction and find the values of a, b and g, respectively:} \\[0.5em] a\text{KMnO}_4 + b\text{H}_2\text{O}_2 + 3\text{H}_2\text{SO}_4 \rightarrow d\text{MnSO}_4 + e\text{K}_2\text{SO}_4 + f\text{O}_2 + g\text{H}_2\text{O} 2 208 Recommended Questions $ 2, 4, 8 $, $ 2, 5, 8 $... 2 Edit Delete
8577 $2\text{MnO}_4^- + 5\text{H}_2\text{O}_2 + 6\text{H}^+ \rightarrow 2\text{Z} + 5\text{O}_2 + 8\text{H}_2\text{O}. \text{ In this reaction, Z is:}$ 2 208 Recommended Questions $\text{Mn}^{2+}$, $\text{Mn}^{4+}$... 1 Edit Delete
8576 \text{For the redox reaction,} a\text{MnO}_4^- + b\text{C}_2\text{O}_4^{2-} + c\text{H}^+ \rightarrow d\text{Mn}^{2+} + e\text{CO}_2 + f\text{H}_2\text{O} \text{the correct stoichiometric coefficients of the reactants a, b, and c respectively for the balanced equation are:} 2 208 Recommended Questions $ 16, 5, 2 $, $ 2, 5, 16 $... 2 Edit Delete
8575 $\text{The balanced equation for the reaction between chlorine and sulphur dioxide in water is:}$ 2 208 Recommended Questions \text{Cl}_2\text{(s)} + \text{SO}_2\text{(aq)} + 2\text{H}_2\text{O(l)} \rightarrow 2\text{Cl}^-\text{(aq)} + \text{SO}_4^{2-}\text{(aq)} + 4\text{H}^+\text{(aq)}, 3\text{Cl}_2\text{(s)} + \text{SO}_2\text{(aq)} + 2\text{H}_2\text{O(l)} \rightarrow \text{Cl}^-\text{(aq)} + \text{SO}_4^{2-}\text{(aq)} + 3\text{H}^+\text{(aq)}... $\text{Cl}_2\text{(s)} + \text{SO}_2\text{(aq)} + 2\text{H}_2\text{O}_{\text{(l)}} \rightarrow 2\text{Cl}^-_{\text{(aq)}} + \text{SO}_4^{2-}_{\text{(aq)}} + 4\text{H}^+_{\text{(aq)}}$ Edit Delete
8574 $\text{The oxidation state of Cu in } \text{YBa}_2\text{Cu}_3\text{O}_7 \text{ is -}$ $\text{(Yttrium = +3)}$ 2 208 Recommended Questions $\frac{3}{7}$, $\frac{7}{3}$... 2 Edit Delete
8573 \text{In the equation, } \text{Cr}_2\text{O}_7^{2-} + \text{Fe}^{2+} + \text{H}^+ \rightarrow \text{Cr}^{3+} + \text{Fe}^{3+} + \text{H}_2\text{O} \text{, the coefficients of } \text{Fe}^{2+} \text{ and } \text{H}^+ \text{ are respectively:} 2 208 Recommended Questions $6, 7$, $6, 14$... $6, 14$ Edit Delete
8572 \text{In the given balanced chemical reaction: } \text{IO}_3^- + a\text{I}^- + b\text{H}^+ \rightarrow c\text{H}_2\text{O} + d\text{I}_2 \text{. The values of a, b, c, and d respectively are:} 2 208 Recommended Questions $5, 6, 3, 3$, $5, 3, 6, 3$... 1 Edit Delete
8571 $\text{The oxidation number and covalency of sulphur in the sulphur molecule (S}_8\text{) are respectively:}$ 2 208 Recommended Questions $0, \text{ and } 2$, $+6, \text{ and } 8$... 1 Edit Delete
8570 $\text{The oxidation state of two S-atoms in Na}_2\text{S}_2\text{O}_3 \text{ is:}$ 2 208 Recommended Questions $+2 \text{ and } +4$, $+3 \text{ and } -2$... 4 Edit Delete
8569 $\text{The compound AgF}_2 \text{ (unstable) acts as a/an:}$ 2 208 Recommended Questions $\text{Oxidising agent.}$, $\text{Reducing agent.}$... 1 Edit Delete
8568 $\text{Disproportionation reactions are:}$ $(\text{a}) \, 2\text{Cu}^+ \rightarrow \text{Cu}^{2+} + \text{Cu}^0$ $(\text{b}) \, 3\text{MnO}_4^{2-} + 4\text{H}^+ \rightarrow 2\text{MnO}_4^- + \text{MnO}_2 + 2\text{H}_2\text{O}$ $(\text{c}) \, 2\text{KMnO}_4 \xrightarrow{\Delta} \text{K}_2\text{MnO}_4 + \text{MnO}_2 + \text{O}_2$ $(\text{d}) \, 2\text{MnO}_4^- + 3\text{Mn}^{2+} + 2\text{H}_2\text{O} \rightarrow 5\text{MnO}_2 + 4\text{H}^{\oplus}$ 2 208 Recommended Questions $(\text{a}) \text{ and } (\text{d}) \text{ only}$, $(\text{a}) \text{ and } (\text{b}) \text{ only}$... 2 Edit Delete
8567 $\text{The formulas for the following compounds are:}$ $(\text{a}) \text{ Mercury(II) chloride and } (\text{b}) \text{ Thallium(I) sulphate}$ 2 208 Recommended Questions $\text{HgCl}_2, \text{Tl}_2\text{SO}_4$, $\text{Hg}_2\text{Cl}_2, \text{Tl}_2\text{SO}_4$... 1 Edit Delete
8566 $\text{Which element exhibits both positive and negative oxidation states?}$ 2 208 Recommended Questions $\text{Cs}$, $\text{Ne}$... 3 Edit Delete
8565 \text{Fluorine reacts with ice as per the following reaction:} \text{H}_2\text{O (s) + F}_2\text{ (g) → HF (g) + HOF (g)} \text{This reaction is a redox reaction because-} 2 208 Recommended Questions $\text{F}_2 \text{ is getting oxidized.}$, $\text{F}_2 \text{ is getting reduced.}$... 3 Edit Delete
8564 $\text{Which of the following reactions does not represent a redox change?}$ 2 208 Recommended Questions $\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2$, $2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O}$... $\text{CaCO}_3 \rightarrow \text{CaO} + \text{CO}_2$ Edit Delete
8563 $\text{The oxidation number of sulphur and nitrogen in } \text{H}_2\text{SO}_5 \text{ and } \text{NO}_3^- \text{ are respectively-}$ 2 208 Recommended Questions $+6, +5$, $-6, -6$... $+6, +5$ Edit Delete
8562 \text{Assertion (A): In the presentation } E^{\ominus}_{\text{Fe}^{3+}/\text{Fe}^{2+}} \text{ and } E^{\ominus}_{\text{Cu}^{2+}/\text{Cu}}\text{, } \text{Fe}^{3+}/\text{Fe}^{2+} \text{ and } \text{Cu}^{2+}/\text{Cu} \text{ are redox couples.} \text{Reason (R): A redox couple is the combination of the oxidised and reduced forms of a substance involved in an oxidation or reduction half cell.} 2 208 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8561 $\text{Which of the following reactions does not involve disproportionation process?}$ 2 208 Recommended Questions $\text{Cl}_2 + \text{OH}^- \rightarrow \text{Cl}^- + \text{ClO}_3^- + \text{H}_2\text{O}$, $2\text{H}_2\text{O}_2 \rightarrow \text{H}_2\text{O} + \text{O}_2$... 4 Edit Delete
8560 $\text{Why does the MnO}_4^{2-} \text{ ion undergo disproportionation in an acidic medium, whereas the MnO}_4^- \text{ ion does not?}$ 2 208 Recommended Questions $\text{Due to manganese being in its highest oxidation state in MnO}_4^{2-}\text{.}$, $\text{Due to manganese being in its highest oxidation state in MnO}_4^-\text{.}$... 2 Edit Delete
8559 $\text{The oxidation state of P in HPO}_3^{2-} \text{ is-}$ 2 208 Recommended Questions $+3$, $+4$... 1 Edit Delete
8558 $\text{The oxidation states of the central atom in the given species are, respectively:}$ $\text{H}_4\text{P}_2\text{O}_7 \text{ and H}_2\text{S}_2\text{O}_7$ 2 208 Recommended Questions $0 \text{ and } +6$, $+3 \text{ and } +4$... 4 Edit Delete
8557 $\text{H}_2\text{S gas when passed through a solution of cations containing HCl precipitates the cations of the second group in qualitative analysis but not those belonging to the fourth group. It is because:}$ 2 207 Recommended Questions $\text{Presence of HCl decreases the sulphide ion concentration}$, $\text{Presence of HCl increases the sulphide ion concentration}$... 1 Edit Delete
8556 $\text{Among the following solvents, silver chloride is most soluble in:}$ 2 207 Recommended Questions $0.1 \text{ mol dm}^{-3} \text{ AgNO}_3 \text{ solution}$, $0.1 \text{ mol dm}^{-3} \text{ HCl solution}$... 4 Edit Delete
8555 $\text{Given below are two statements:}$ $\text{Assertion (A): The ionisation of hydrogen sulphide in water is low in the presence of hydrochloric acid.}$ $\text{Reason (R): Hydrogen sulphide is a weak acid.}$ 2 207 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8554 $\text{In an acidic Buffer solution (CH}_3\text{COOH + CH}_3\text{COONa), the species mainly present in the solution are:}$ $\text{(Ignore negligible amount)}$ 2 207 Recommended Questions $\text{CH}_3\text{COOH, CH}_3\text{COO}^-, \text{CH}_3\text{COONa, H}^+$, $\text{CH}_3\text{COO}^-, \text{Na}^+, \text{CH}_3\text{COOH}$... 2 Edit Delete
8553 $\text{Out of } \text{Ca}^{2+}, \text{ Al}^{3+}, \text{ Cr}^{3+}, \text{ Mg}^{2+}, \text{ and } \text{Zn}^{2+}, \text{ the reagents } \text{NH}_4\text{Cl and aqueous } \text{NH}_3 \text{ will precipitate}$ 2 207 Recommended Questions $\text{Ca}^{2+}, \text{ Al}^{3+}$, $\text{Al}^{3+}, \text{ Cr}^{3+}$... 2 Edit Delete
8552 $\text{When NH}_4\text{Cl is added to an aqueous solution of NH}_4\text{OH, then}$ 2 207 Recommended Questions $\text{Concentration of } [\text{OH}^-] \text{ ions decreases.}$, $\text{Concentration of } [\text{OH}^-] \text{ ions increases.}$... 1 Edit Delete
8551 $\text{The addition of } \text{HCl does not suppress the ionization of:}$ 2 207 Recommended Questions $\text{Acetic acid}$, $\text{Benzoic acid}$... 4 Edit Delete
8550 $\text{The dissociation of } \text{NH}_4\text{OH can be suppressed by the addition of}$ 2 207 Recommended Questions $\text{NH}_4\text{Cl}$, $\text{NH}_4\text{NO}_3$... 2 Edit Delete
8549 $\text{The dissociation of } \text{NH}_4\text{OH can be suppressed by the addition of}$ 2 207 Recommended Questions $\text{NH}_4\text{Cl}$, $\text{NH}_4\text{NO}_3$... 4 Edit Delete
8548 $\text{Consider the nitration of benzene using mixed conc. H}_2\text{SO}_4 \text{ and HNO}_3\text{. If a large amount of KHSO}_4 \text{ is added to the mixture, the rate of nitration will be:}$ 2 207 Recommended Questions $\text{Slower}$, $\text{Unchanged}$... 1 Edit Delete
8547 $\text{In which of the following will the solubility of } \text{AgCl be the minimum?}$ 2 207 Recommended Questions $\text{0.1 M } \text{NaNO}_3$, $\text{Water}$... 3 Edit Delete
8546 $\text{Salting out action of the soap is based on:}$ 2 207 Recommended Questions $\text{Complex ion formation}$, $\text{Common ion effect}$... 4 Edit Delete
8545 $\text{Salting out action of the soap is based on:}$ 2 207 Recommended Questions $\text{Complex ion formation}$, $\text{Common ion effect}$... 3 Edit Delete
8544 $\text{The standard reduction potential for Cu}^{2+}/\text{Cu is 0.34 V. The reduction potential at pH = 14 for the above couple given } (K_{sp}[\text{Cu}(\text{OH})_2] = 1 \times 10^{-19}) \text{ is:}$ 2 207 Recommended Questions $-0.22 \text{ V}$, $+0.22 \text{ V}$... 1 Edit Delete
8543 $\text{The } \text{K}_{sp} \text{ of } \text{Ag}_2\text{CrO}_4\text{, } \text{AgCl, } \text{AgBr and } \text{AgI are, respectively, } 1.1\text{x}10^{-12}\text{, } 1.8\text{x}10^{-10}\text{, } 5.0\text{x}10^{-13}\text{, and } 8.3\text{x}10^{-17}. \text{ The salt precipitates that last if the } \text{AgNO}_3 \text{ solution is added to the solution containing equal moles of } \text{NaCl, } \text{NaBr, } \text{NaI and } \text{Na}_2\text{CrO}_4 \text{ is -}$ 2 207 Recommended Questions $\text{AgI}$, $\text{AgCl}$... 4 Edit Delete
8542 $\text{When equal volumes of 0.002 M solutions of sodium iodate and cupric chlorate are mixed together } (K_{sp} \text{ (cupric iodate)} = 7.4 \times 10^{-8}), \text{ from the following, the correct observation would be:}$ 2 207 Recommended Questions $\text{Precipitation will occur}$, $\text{Precipitation will not occur}$... 2 Edit Delete
8541 \text{The } K_{sp} \text{ of Ag}_2\text{CrO}_4 \text{ and AgBr is } 1.1 \times 10^{-12} \text{ and } 5.0 \times 10^{-13} \text{ respectively. The molarity ratio of saturated solutions of Ag}_2\text{CrO}_4 \text{ and AgBr will be:} 2 207 Recommended Questions $91.9$, $108.6$... $91.9$ Edit Delete
8540 $\text{The solubility product of silver chromate is } 1.1 \times 10^{-12}\text{. The solubility of silver chromate will be:}$ 2 207 Recommended Questions $6.5 \times 10^{-5} \text{ mol L}^{-1}$, $6.5 \times 10^{-6} \text{ mol L}^{-1}$... 1 Edit Delete
8539 \text{The maximum concentration of equimolar solutions, of ferrous sulphate and sodium sulphide, so that when mixed in equal volumes, there is no precipitation of iron sulphide, will be:} \text{(For iron sulphide, } K_{sp} = 6.3 \times 10^{-18}\text{).} 2 207 Recommended Questions $5.02 \times 10^{-9} \text{ M}$, $5.02 \times 10^{9} \text{ M}$... 1 Edit Delete
8538 $\text{A saturated solution of Ba(OH)}_2 \text{ has a pH of 12. The value of its } K_{sp} \text{ will be:}$ 2 207 Recommended Questions $4.00 \times 10^{-6} M^3$, $4.00 \times 10^{-7} M^3$... 4 Edit Delete
8537 $\text{The solubility of } \text{BaSO}_4 \text{ in water is } 2.42 \times 10^{-3} \text{ g/ litre at } 298 \text{ K. The value of the solubility product will be: (Molar mass of } \text{BaSO}_4 = 233 \text{ g mol}^{-1})$ 2 207 Recommended Questions $1.08 \times 10^{-10} \text{ mol}^2 \text{ L}^{-2}$, $1.08 \times 10^{-12} \text{ mol}^2 \text{ L}^{-2}$... 1 Edit Delete
8536 $\text{The solubility product of mercurous iodide is } 4.5 \times 10^{-29}. \text{ The solubility of mercurous iodide will be:}$ 2 207 Recommended Questions $6.5 \times 10^{-7} \text{ mol L}^{-1}$, $4.09 \times 10^{-8} \text{ mol L}^{-1}$... 2 Edit Delete
8535 $\text{The molar solubility of CaF}_2 \text{ (K}_{\text{sp}} = 5.3 \times 10^{-11}) \text{ in } 0.1 \text{ M solution of NaF will be:}$ 2 207 Recommended Questions $5.3 \times 10^{-11} \text{ mol L}^{-1}$, $5.3 \times 10^{-8} \text{ mol L}^{-1}$... 3 Edit Delete
8534 \text{The minimum volume of water required to dissolve } 1\text{g of calcium sulphate at } 298 \text{ K is} (\text{For } \text{CaSO}_4, \text{ K}_{\text{sp}} \text{ is } 9.1 \times 10^{-6}) 2 207 Recommended Questions $1.22 \text{ L}$, $0.69 \text{ L}$... 3 Edit Delete
8533 $\text{If the solubility of a } \text{M}_2\text{S salt is } 3.5 \times 10^{-6} \text{ mol litre}^{-1}, \text{ then the solubility product of } \text{M}_2\text{S will be:}$ 2 207 Recommended Questions $1.7 \times 10^{-6} \text{ mol}^3 \text{ litre}^{-3}$, $1.7 \times 10^{-16} \text{ mol}^3 \text{ litre}^{-3}$... 2 Edit Delete
8532 $\text{At room temperature, MY and NY}_3, \text{ two nearly insoluble salts, have the same K}_{\text{sp}} \text{ values of } 6.2 \times 10^{-13}. \text{ The true statement regarding MY and NY}_3 \text{ is:}$ 2 207 Recommended Questions $\text{The molar solubility of MY in water is less than that of NY}_3.$, $\text{The salts MY and NY}_3 \text{ are more soluble in } 0.5 \text{ M KY than in pure water.}$... 1 Edit Delete
8531 $\text{The solubility of } \text{Ni (OH)}_2 \text{ in } 0.1 \text{ M NaOH is:}\text{K}_{\text{sp}} (\text{Ni (OH)}_2) = 2 \times 10^{-15}$ 2 207 Recommended Questions $2 \times 10^{-8} \text{ M.}$, $1 \times 10^{-13} \text{ M}$... 4 Edit Delete
8530 $\text{The solubility product for a salt of type AB is } 4 \times 10^{-8}. \text{ The molarity of its standard solution will be:}$ 2 207 Recommended Questions $2 \times 10^{-4} \text{ mol/L}$, $16 \times 10^{-16} \text{ mol/L}$... 1 Edit Delete
8529 \text{The most hydrolyzed salt among the following is-} \text{(Assume that } K_b \text{ of all weak bases is the same)} 2 207 Recommended Questions $\text{NH}_4\text{Cl}$, $\text{CuSO}_4$... 1 Edit Delete
8528 $\text{A } 0.02 \text{ M solution of pyridinium hydrochloride has a pH of } 3.44. \text{ The ionization constant of pyridine will be:}$ 2 207 Recommended Questions $6.6 \times 10^{-6}$, $1.51 \times 10^{-9}$... 2 Edit Delete
8527 $\text{The ionization constant of nitrous acid is } 4.5 \times 10^{-4}. \text{ The pH of a } 0.04 \text{ M sodium nitrite solution will be:}$ 2 207 Recommended Questions $2.56$, $6.14$... 3 Edit Delete
8526 $\text{If the pH of } 0.1 \text{ M NaCN solution is } 11, \text{ then the percentage hydrolysis will be:}$ 2 207 Recommended Questions $0.1\%$, $1\%$... 2 Edit Delete
8525 $\text{The percentage degree of hydrolysis of a salt of weak acid (HA) and weak base (BOH) in its } 0.1 \text{ M solution is found to be } 10\%. \text{ If the molarity of the solution is } 0.05 \text{ M, the percentage hydrolysis of the salt should be -}$ 2 207 Recommended Questions $5\%$, $10\%$... 2 Edit Delete
8524 $\text{The ionization constant of chloroacetic acid is } 1.35 \times 10^{-3}. \text{ The pH of a } 0.1 \text{ M acid solution will be:}$ 2 207 Recommended Questions $1.94$, $6.14$... 1 Edit Delete
8523 \text{Assertion (A): The aqueous solution of } \text{CH}_3\text{COONa is alkaline in nature.} \text{Reason (R): Sodium acetate undergoes anionic hydrolysis.} 2 207 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8522 $\text{The salt that gives a neutral solution in water is:}$ 2 207 Recommended Questions $\text{KBr}$, $\text{NH}_4\text{NO}_3$... 1 Edit Delete
8521 $\text{The degree of hydrolysis of the salt is independent of the concentration of a solution:}$ 2 207 Recommended Questions $\text{NH}_4\text{Cl}$, $\text{NH}_4\text{CN}$... 2 Edit Delete
8520 $\text{The salt solution that is basic in nature is:}$ 2 207 Recommended Questions $\text{Ammonium chloride.}$, $\text{Ammonium sulphate.}$... 4 Edit Delete
8519 $\text{When } 10 \text{ ml of } 0.1 \text{ M acetic acid (p}K_a=5.0) \text{ is titrated against } 10 \text{ ml of } 0.1 \text{ M ammonia solution (p}K_b=5.0), \text{ the pH at equivalence point will be:}$ 2 207 Recommended Questions $9.0$, $6.0$... 4 Edit Delete
8518 $\text{The mixture that shows the maximum buffer capacity is:}$ 2 207 Recommended Questions $\text{0.1 M } \text{CH}_3\text{COOH} + \text{0.2 M } \text{CH}_3\text{COONa}$, $\text{0.1 M } \text{CH}_3\text{COOH} + \text{0.15 M } \text{CH}_3\text{COONa}$... 4 Edit Delete
8517 $\text{Which of the following cannot act as a buffer?}$ 2 207 Recommended Questions $\text{NaH}_2\text{PO}_4 + \text{H}_3\text{PO}_4$, $\text{NH}_4\text{OH} + \text{NH}_4\text{Cl}$... 3 Edit Delete
8516 $\text{K}_\text{a} \text{ for HCN is } 5 \times 10^{-10} \text{ at } 25^{\circ}\text{C}. \text{ For maintaining a constant pH of } 9, \text{ the volume of } 5 \text{ M KCN solution required to be added to } 10 \text{ mL of } 2 \text{ M HCN solution is-}$ 2 207 Recommended Questions $2 \text{ mL}$, $3 \text{ mL}$... 1 Edit Delete
8515 $\text{Assertion (A): An aqueous solution of ammonium acetate can act as a buffer.}$ $\text{Reason (R): Acetic acid is a weak acid and } \text{NH}_4\text{OH} \text{ is a weak base.}$ 2 207 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8514 $\text{The pH of a solution containing 0.1 mol of }\text{CH}_3\text{COOH}\text{, 0.2 mol of }\text{CH}_3\text{COONa}\text{, and 0.05 mol of NaOH in 1 L of solution is-}$ $(\text{p}K_a \text{ of }\text{CH}_3\text{COOH} = 4.74 \text{ and log 5} = 0.7)$ 2 207 Recommended Questions $4.56$, $5.44$... 2 Edit Delete
8513 $\text{A solution of benzoic acid (a weak monobasic acid) is titrated with NaOH. The pH of the solution is 4.2 when half of the acid is neutralized. The dissociation constant of the acid will be:}$ 2 207 Recommended Questions $3.2 \times 10^{-5}$, $6.42 \times 10^{-4}$... 3 Edit Delete
8512 $\text{The mixture that will produce a buffer solution when mixed in equal volumes is:}$ 2 207 Recommended Questions $0.1 \text{ mol dm}^{-3} \text{ NH}_4\text{OH and } 0.1 \text{ mol dm}^{-3} \text{ HCl}$, $0.05 \text{ mol dm}^{-3} \text{ NH}_4\text{OH and } 0.1 \text{ mol dm}^{-3} \text{ HCl}$... 3 Edit Delete
8511 $\text{The following pair constitutes a buffer is:}$ 2 207 Recommended Questions $\text{HNO}_2 \text{ and } \text{NaNO}_2$, $\text{NaOH and NaCl}$... 1 Edit Delete
8510 $\text{If a solution of 0.1 M NH}_4\text{OH and 0.1 M NH}_4\text{Cl has pH 9.25, then the pK}_b \text{ of NH}_4\text{OH will be:}$ 2 207 Recommended Questions $9.25$, $4.75$... 2 Edit Delete
8509 $\text{An acidic buffer cannot be formed by which of the following combinations is:}$ 2 207 Recommended Questions $\text{HClO}_4 \text{ and NaClO}_4$, $\text{CH}_3\text{COOH and CH}_3\text{COONa}$... 1 Edit Delete
8508 $\text{The mixture that can act like a buffer is:}$ 2 207 Recommended Questions $\text{CH}_3\text{COOH} + \text{CH}_3\text{COONa}$, $\text{NH}_4\text{NO}_3 + \text{NH}_4\text{OH}$... 4 Edit Delete
8507 $\text{In a buffer solution containing an equal concentration of B}^- \text{ and HB, the } K_b \text{ for B}^- \text{ is } 10^{-10}\text{. pH of the buffer solution is:}$ 2 207 Recommended Questions $10$, $7$... 4 Edit Delete
8506 $\text{The pair that represents a buffer solution among the following pairs is?}$ 2 207 Recommended Questions $\text{HNO}_3 \text{ and NH}_4\text{NO}_3$, $\text{HCl and KCl}$... 3 Edit Delete
8505 $\text{The concentration of }[\text{H}^+]\text{ ion in a solution containing 0.1 M HCN and 0.2 M NaCN will be:}$ $(K_a \text{ for HCN} = 6.2 \times 10^{-10})$ 2 207 Recommended Questions $3.1 \times 10^{10}$, $6.2 \times 10^{5}$... 4 Edit Delete
8504 138 2 207 Recommended Questions 1, 2... 4 Edit Delete
8503 137 2 207 Recommended Questions 1, 2... 2 Edit Delete
8502 $\text{An acidic buffer solution can be prepared by mixing the solutions of:}$ 2 207 Recommended Questions $\text{Sodium chloride and sodium hydroxide}$, $\text{Sulphuric acid and sodium sulphate}$... 4 Edit Delete
8501 $\text{If the pH of an acidic buffer is 5.7 and p}K_a \text{ is 5 then the ratio of } \frac{[\text{Salt}]}{[\text{Acid}]} \text{ will be:}$ 2 207 Recommended Questions $3$, $4$... 3 Edit Delete
8500 $\text{At 25°C, the pH of a solution containing 0.10 M sodium acetate and 0.03 M acetic acid will be:}$ $[\text{pK}_a \text{ value of } \text{CH}_3\text{COOH} = 4.57]$ 2 207 Recommended Questions $3.24$, $4.59$... 3 Edit Delete
8499 $\text{The basic buffer solution among the following is:}$ 2 207 Recommended Questions $\text{NH}_4\text{Cl} + \text{NH}_4\text{OH}$, $\text{NaCl} + \text{NaOH}$... 1 Edit Delete
8498 $\text{The p}K_a \text{ of HCN is 9.30. The pH of a solution prepared by mixing 2.5 moles of KCN and 2.5 moles of HCN in water and making up the total volume to 500 ml will be:}$ 2 207 Recommended Questions $9.30$, $8.30$... 1 Edit Delete
8497 131 2 207 Recommended Questions 1, 2... 2 Edit Delete
8496 $\text{Given below are two statements:}$ $\text{Assertion (A): A solution containing a mixture of acetic acid and sodium acetate maintains a constant value of pH on the addition of small amounts of acid or alkali.}$ $\text{Reason (R): A solution containing a mixture of acetic acid and sodium acetate acts as a buffer solution.}$ 2 207 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8495 $\text{The pH of a 0.05 M aqueous solution of diethylamine is 12. Its }K_b\text{ value will be:}$ 2 207 Recommended Questions $2 \times 10^{-3}$, $2.5 \times 10^{-3}$... 2 Edit Delete
8494 $\text{The percentage ionization of 0.02 M dimethylamine solution if it also contains 0.1 M NaOH solution }(K_b \text{ of dimethylamine} = 5.4 \times 10^{-4})\text{ will be:}$ 2 207 Recommended Questions $0.54\%$, $0.05\%$... 1 Edit Delete
8493 $\text{The self-ionization constant for pure formic acid, } K = [\text{HCOOH}_2^+][\text{HCOO}^-] \text{ has been estimated as } (10)^{-4} \text{ at room temperature. The percentage of formic acid molecules in pure formic acid that are converted to formate ions is}$ $\text{(Given: } d_{\text{HCOOH}} = 1.22 \text{ g/cc})$ 2 207 Recommended Questions $0.0185\%$, $0.0073\%$... 4 Edit Delete
8492 $\text{A 0.001 M aniline solution has a pH of:}$ $(K_b = 4.27 \times 10^{-10})$ 2 207 Recommended Questions $6.19$, $7.81$... 2 Edit Delete
8491 $\text{Which of the following is an amphiprotic (can accept and give protons) ion?}$ 2 207 Recommended Questions $\text{HPO}_3^-$, $\text{H}_2\text{PO}_2^-$... 4 Edit Delete
8490 $\text{The pH value of a 0.01 M solution of an organic acid is 4.15. The pK}_a \text{ of the acid will be:}$ 2 207 Recommended Questions $8.95$, $1.43$... 4 Edit Delete
8489 $\text{The first ionization constant of H}_2\text{S is } 9.1 \times 10^{-8}\text{. The concentration of HS}^- \text{ ion in its 0.1 M solution will be:}$ 2 207 Recommended Questions $12.3 \times 10^{-7} \text{ M}$, $11.4 \times 10^{-6} \text{ M}$... 4 Edit Delete
8488 $\text{The degree of ionization of 0.05 M acetic acid is:}$ $(\text{pK}_a = 4.74)$ 2 207 Recommended Questions $1.91 \times 10^{-2}$, $2.46 \times 10^{2}$... 1 Edit Delete
8487 $\text{The ionization constants of HCOOH, and HCN at 298K are } 1.8 \times 10^{-4} \text{ and } 4.8 \times 10^{-9} \text{ respectively. The ionization constants of the corresponding conjugate bases of HCOOH and HCN will be}$ 2 207 Recommended Questions $5.6 \times 10^{-11}, 2.08 \times 10^{-6}$, $2.4 \times 10^{-11}, 4.2 \times 10^{-6}$... 1 Edit Delete
8486 $\text{The ionization constant of phenol is } 1.0 \times 10^{-10}\text{. The concentration of phenolate ion in 0.05 M solution of phenol will be:}$ 2 207 Recommended Questions $4.2 \times 10^{-4} \text{ M}$, $3.6 \times 10^{-5} \text{ M}$... 4 Edit Delete
8485 $\text{The pH of a 0.1 M solution of cyanic acid (HCNO) is 2.34. The ionization constant of the acid will be:}$ 2 207 Recommended Questions $2.02 \times 10^{4}$, $3.14 \times 10^{3}$... 3 Edit Delete
8484 $\text{The ionization constant of propanoic acid is } 1.32 \times 10^{-5}\text{. The degree of ionization of 0.05M acid solution will be:}$ 2 207 Recommended Questions $\alpha = 0.63 \times 10^{-2}$, $\alpha = 1.63 \times 10^{-4}$... 3 Edit Delete
8483 $\text{The ionization constant of acetic acid is } 1.74 \times 10^{-5}\text{. The pH of acetic acid in its 0.05 M solution will be:}$ 2 207 Recommended Questions $7.81$, $3.03$... 2 Edit Delete
8482 $\text{The strongest acid among the following compounds is:}$ 2 207 Recommended Questions $\text{HClO}_3$, $\text{HClO}_4$... 2 Edit Delete
8481 $\text{The concentration of CH}_3\text{COOH that will have the same [H}^+\text{] as obtained from } 10^{-2} \text{ M HCOOH, is-}$ $\text{(Ka(CH}_3\text{COOH}) = 10^{-5}, \text{Ka(HCOOH}) = 10^{-4}\text{)}$ 2 207 Recommended Questions $10 \text{ M}$, $5 \text{ M}$... 3 Edit Delete
8480 $\text{How much water should be added to 400 mL of HCl solution in order to raise the pH by one unit?}$ 2 207 Recommended Questions $360 \text{ mL}$, $1000 \text{ mL}$... 4 Edit Delete
8479 $\text{When 0.1 mol of } \text{CH}_3\text{NH}_2 (K_b = 5 \times 10^{-4}) \text{ is mixed with 0.08 mol of HCl and diluted to 1 L, the } \text{H}^+ \text{ ion concentration in the solution will be:}$ 2 207 Recommended Questions $8 \times 10^{-11} \text{ M}$, $6 \times 10^{-5} \text{ M}$... 1 Edit Delete
8478 $\text{A mixture of 10 mL of 0.2 M Ca(OH)}_2 \text{ and 25 mL of 0.1 M HCl is prepared. The pH of the resultant mixture would be:}$ 2 207 Recommended Questions $1.90$, $13.42$... 4 Edit Delete
8477 $\text{The solution with pH value close to 1.0 among the following is:}$ 2 207 Recommended Questions $100 \text{ ml of } (\text{M}/10) \text{HCl} + 100 \text{ ml of } (\text{M}/10) \text{NaOH}$, $55 \text{ ml of } (\text{M}/10) \text{HCl} + 45 \text{ ml of } (\text{M}/10) \text{NaOH}$... 4 Edit Delete
8476 $\text{The pH of neutral water at } 25^\circ\text{C} \text{ is } 7.0. \text{ As the temperature increases, ionisation of water increases. However, the concentration of } \text{H}^+ \text{ ions and } \text{OH}^- \text{ ions is equal. What will be the pH of pure water at } 60^\circ\text{C} \text{?}$ 2 207 Recommended Questions $\text{Equal to } 7.0$, $\text{Greater than } 7.0$... 3 Edit Delete
8475 $\text{A solution containing 2 g of TlOH in 2 litres of water has a pH of?}$ $\text{(Atomic wt of Tl = 204)}$ 2 207 Recommended Questions 11.65, 12.45... 1 Edit Delete
8474 $\text{At 298 K, the solubility of Sr(OH)}_2 \text{ is 19.23 g/L. The pH of the solution will be:}$ 2 207 Recommended Questions $1.50$, $13.50$... 2 Edit Delete
8473 $0.561 \text{ g of } \text{KOH} \text{ is dissolved in water to give } 200 \text{ mL of solution at } 298 \text{ K}. \text{ The pH of the solution will be}$ 2 207 Recommended Questions $12.70$, $1.30$... 1 Edit Delete
8472 $\text{The value of the pH of 0.01 mol dm}^{-3} \text{CH}_3\text{COOH } (K_a = 1.74 \times 10^{-5}) \text{ is:}$ 2 207 Recommended Questions 3.4, 3.6... 1 Edit Delete
8471 $\text{When 1 mL of 13.6 M HCl is diluted with water to give 1 litre of solution, the pH of the resultant solution will be:}$ 2 207 Recommended Questions $11.87$, $3.46$... 3 Edit Delete
8470 $\text{The solution that has the lowest pH is:}$ $\text{(assuming 100\% dissociation)}$ 2 207 Recommended Questions $0.003 \text{ M HCl}$, $0.005 \text{ M NaOH}$... 1 Edit Delete
8469 $\text{The ionisation constant of an acid, } K_a\text{, is the measure of the strength of an acid. The } K_a \text{ values of acetic acid, hypochlorous acid and formic acid are } 1.74 \times 10^{-5}\text{, } 3.0 \times 10^{-8} \text{ and } 1.8 \times 10^{-4}\text{, respectively. The correct order of pH value of } 0.1 \text{ mol dm}^{-3} \text{ solutions of these acids is:}$ 2 207 Recommended Questions $\text{Acetic acid} > \text{Hypochlorous acid} > \text{Formic acid}$, $\text{Hypochlorous acid} < \text{Acetic acid} > \text{Formic acid}$... 4 Edit Delete
8468 $\text{Given below are two statements:}$ $\text{Assertion (A): An aqueous solution of ammonium carbonate is basic.}$ $\text{Reason (R): The acidic or basic nature of a salt solution of a salt of a weak acid and a weak base depends on the Ka and Kb values of the acid and the base forming it.}$ 2 207 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8467 $\text{The pH of } 0.1 \text{ M solution of the following compounds increases in the order of}$ 2 207 Recommended Questions $\text{NaCl} < \text{NH}_4\text{Cl} < \text{NaCN} < \text{HCl}$, $\text{HCl} < \text{NH}_4\text{Cl} < \text{NaCl} < \text{NaCN}$... 2 Edit Delete
8466 $\text{The pH of a sample of vinegar is 3.76. The concentration of H}^+ \text{ ions in the sample will be -}$ 2 207 Recommended Questions $1.74 \times 10^{-4} \text{ M}$, $2.34 \times 10^{-11} \text{ M}$... 1 Edit Delete
8465 $\text{The ionic product of water at 310 K is } 2.7 \times 10^{-14}\text{.}$ $\text{The pH of neutral water at this temperature will be:}$ 2 207 Recommended Questions $2.56$, $6.78$... 2 Edit Delete
8464 $\text{The number of } \text{H}^+ \text{ ions present in } 1 \text{ mL of a solution whose pH} = 4, \text{ is given as:}$ $(N_A = \text{Avogadro's number})$ 2 207 Recommended Questions $10^{-7} N_A$, $10^{-8} N_A$... 1 Edit Delete
8463 $\text{When equal volumes of 0.1 M NaOH and 0.01 M HCl are mixed, the pH of the resulting solution will be:}$ 2 207 Recommended Questions 12.65, 2.0... 1 Edit Delete
8462 $\text{The concentration of hydrogen ion in a sample of soft drink is } 3.8 \times 10^{-3} \text{ M.}$ $\text{The pH of the soft drink will be:}$ 2 207 Recommended Questions $3.14$, $2.42$... 2 Edit Delete
8461 $(\text{a}) \text{ Human muscle-fluid, pH} = 6.83$ $(\text{b}) \text{ Human stomach fluid, pH} = 1.2$ $(\text{c}) \text{ Human blood, pH} = 7.38$ $(\text{d}) \text{ Human saliva, pH} = 6.4$ $\text{Out of the above mentioned biological fluids, the one with the minimum concentration of hydrogen ions is:}$ 2 207 Recommended Questions $\text{Human blood}$, $\text{Human muscle fluid}$... 1 Edit Delete
8460 $\text{The pH of a 0.01 M NaOH}_{(\text{aq})} \text{ solution will be:}$ 2 207 Recommended Questions 7.01, 2... 3 Edit Delete
8459 $\text{The pOH of a solution at 25°C that contains } 1 \times 10^{-10} \text{ M of hydronium ions is:}$ 2 207 Recommended Questions $7.00$, $4.00$... 2 Edit Delete
8458 $\text{The pH of a solution made by mixing } 50 \text{ mL of } 0.01 \text{ M barium hydroxide solution with } 50 \text{ mL of } \text{H}_2\text{O} \text{ is}$ 2 207 Recommended Questions $3.0$, $6.0$... 3 Edit Delete
8457 $\text{The pH values of milk, tomato juice, lemon juice, and egg are 6.8, 4.2, 2.2, and 7.8 respectively.}$ $\text{The corresponding hydrogen ion concentration is maximum in:}$ 2 207 Recommended Questions Lemon juice, Milk... 1 Edit Delete
8456 $\text{Which of the following compounds is in the correct sequence in terms of relative basic strength?}$ 2 207 Recommended Questions $\text{C}_2\text{H}_5\text{O}^- > \text{CH} \equiv \text{C}^- > \text{OH}^-$, $\text{CH} \equiv \text{C}^- > \text{OH}^- > \text{C}_2\text{H}_5\text{O}^-$... 3 Edit Delete
8455 $\text{The ionic species that has the greatest proton affinity to form stable compound is:}$ 2 207 Recommended Questions $\text{HS}^-$, $\text{NH}_2^-$... 2 Edit Delete
8454 $\text{The oxoacid that has the highest } K_a \text{ value is:}$ 2 207 Recommended Questions $\text{HClO}_3$, $\text{HBrO}_3$... 1 Edit Delete
8453 $\text{Conjugate base of hydrazoic acid is:}$ 2 207 Recommended Questions $\text{HN}_3^-$, $\text{N}_2^-$... 3 Edit Delete
8452 $\text{The tendency of } \text{BF}_3, \text{BCl}_3 \text{ and } \text{BBr}_3 \text{ to behave as Lewis acids decreases in the sequence:}$ 2 207 Recommended Questions $\text{BCl}_3 > \text{BF}_3 > \text{BBr}_3$, $\text{BBr}_3 > \text{BCl}_3 > \text{BF}_3$... 2 Edit Delete
8451 $\text{The conjugate bases of Bronsted acids H}_2\text{O and HF are respectively:}$ 2 207 Recommended Questions $\text{H}_3\text{O}^+ \text{ and H}_2\text{F}^+\text{, respectively.}$, $\text{OH}^- \text{ and H}_2\text{F}^+\text{, respectively.}$... 4 Edit Delete
8450 $\text{Assertion: } \text{H}^- \text{ acts as both Brønsted Lowry base as well as Lewis base.}$ $\text{Reason: It acts as both } \text{H}^+ \text{ acceptor and a lone pair donor.}$ 2 207 Recommended Questions {Both assertion & reason are true and the reason is the correct explanation of the assertion.}, {Both assertion & reason are true but the reason is not the correct explanation of the assertion.}... 1 Edit Delete
8449 $\text{Which of the following is/are the Lewis acids?}$ $(\text{i}) \text{ BF}_3 \quad (\text{ii}) \text{ H}_2\text{O} \quad (\text{iii}) \text{ H}^+ \quad (\text{iv}) \text{ AlCl}_3$ 2 207 Recommended Questions $\text{Only (i)}$, $\text{(i) and (ii) only}$... 3 Edit Delete
8448 $\text{Litmus is not affected by hydracids when they are}$ 2 207 Recommended Questions $\text{In contact with water}$, $\text{Dry}$... 2 Edit Delete
8447 $\text{Acidity of BF}_3 \text{ can be explained on the basis of:}$ 2 207 Recommended Questions $\text{Arrhenius concept}$, $\text{Brønsted Lowry concept}$... 3 Edit Delete
8446 $\text{The species that can act as Brønsted acids as well as bases is/are:}$ 2 207 Recommended Questions $\text{H}_2\text{O}$, $\text{HCO}_3^-, \text{HSO}_4^-$... 4 Edit Delete
8445 $\text{OH}^-, \text{F}^-, \text{H}^+ \text{ and BCl}_3$ $\text{The species described above that contain Lewis acids are:}$ 2 207 Recommended Questions $\text{BCl}_3 \text{ and F}^-$, $\text{OH}^- \text{ and F}^-$... 3 Edit Delete
8444 $\text{The molecule that cannot function as both Brønsted acid and base:}$ 2 207 Recommended Questions $\text{HCO}_3^-$, $\text{NH}_3$... 3 Edit Delete
8443 $\text{The species that can act as Brønsted acids as well as bases is/are:}$ 2 207 Recommended Questions $\text{H}_2\text{O}$, $\text{HCO}_3^-, \text{HSO}_4^-$... 1 Edit Delete
8442 $\text{The conjugate bases for Bronsted acids, H}_2\text{SO}_4\text{ and HCO}_3 \text{ will be, respectively:}$ 2 207 Recommended Questions $\text{HSO}_4^-, \text{CO}_3^{2-}$, $\text{HSO}_4^-, \text{CO}_3^-$... 1 Edit Delete
8441 $\text{The conjugate acid-base pair is:}$ 2 207 Recommended Questions $\text{A pair that differs only by one proton}$, $\text{A pair that differs only by the size}$... 1 Edit Delete
8440 $\text{The conjugate acids for the Brönsted bases NH}_2^-, \text{NH}_3 \text{ and HCOO}^- \text{ will be respectively:}$ 2 207 Recommended Questions $\text{N}_2\text{H}_6, \text{NH}_4^+, \text{HCOOH}$, $\text{NH}_3, \text{NH}_4^+, \text{HCOOH}$... 2 Edit Delete
8439 $\text{Match the following species with the corresponding conjugate acid:}$ $\text{Species: A. NH}_3\text{, B. HCO}_3^-\text{, C. H}_2\text{O, D. HSO}_4^-$ $\text{Conjugate acid: 1. CO}_3^{2-}\text{, 2. NH}_4^+\text{, 3. H}_3\text{O}^+\text{, 4. H}_2\text{CO}_3\text{, 5. H}_2\text{SO}_4$ 2 207 Recommended Questions $\text{A-2, B-5, C-1, D-5}$, $\text{A-2, B-4, C-3, D-5}$... 2 Edit Delete
8438 $\text{Which of the following alternatives best describes the reaction } \text{A} \rightleftharpoons \text{B} \text{ at its halfway point?}$ 2 207 Recommended Questions $\Delta G^{\circ} = 0$, $\Delta G^{\circ} > 0$... 1 Edit Delete
8437 At 1127 K and 1 atm pressure, a gaseous mixture of CO and CO}_2 \text{ in equilibrium with solid carbon has 90.55% CO by mass.}$ $\text{C}_{(s)} + \text{CO}_2_{(g)} \rightleftharpoons 2\text{CO}_{(g)}$ $\text{At the specified temperature, } K_c \text{ for this reaction would be:}$ 2 207 Recommended Questions $0.25 \text{ mol L}^{-1}$, $0.34 \text{ mol L}^{-1}$... 3 Edit Delete
8436 $\text{The equilibrium constant for the following reaction is } 1.6 \times 10^5 \text{ at } 1024\text{K}$ $\text{H}_2\text{(g)} + \text{Br}_2\text{(g)} \rightleftharpoons 2\text{HBr}\text{(g)}$ $\text{If HBr at pressure 10.0 bar is introduced into a sealed container at 1024 K, the equilibrium pressure of HBr will be:}$ 2 207 Recommended Questions $11.20 \text{ bar}$, $5.56 \text{ bar}$... 4 Edit Delete
8435 $\text{Given the reaction:}$ $\text{CH}_3\text{COOH}_{(l)} + \text{C}_2\text{H}_5\text{OH}_{(l)} \rightleftharpoons \text{CH}_3\text{COOC}_2\text{H}_5_{(l)} + \text{H}_2\text{O}_{(l)}$ $\text{At 293 K, if one starts with 1.00 mol of acetic acid and 0.18 mol of ethanol, there is 0.171 mol of ethyl acetate in the final equilibrium mixture. The equilibrium constant of the reaction will be:}$ 2 207 Recommended Questions $0.78$, $1.3$... 4 Edit Delete
8434 $\text{Given the reaction:}$ $2\text{BrCl}_{(g)} \rightleftharpoons \text{Br}_2\text{(g)} + \text{Cl}_2\text{(g)}; K_c = 32 \text{ at } 500 \text{ K. If the initial concentration of BrCl is } 3.3 \times 10^{-3} \text{ mol L}^{-1}\text{, the molar concentration of BrCl in the mixture at equilibrium would be:}$ 2 207 Recommended Questions $3.0 \times 10^{-2} \text{ mol L}^{-1}$, $2.0 \times 10^{-4} \text{ mol L}^{-1}$... 4 Edit Delete
8433 \text{At a certain temperature and pressure of } 10^5 \text{ Pa, iodine vapour contains 40% by volume of I atoms. The } K_p \text{ for the equilibrium of the reaction would be:} \text{I}_2\text{(g)} \leftrightarrow 2\text{I}\text{(g)} 2 207 Recommended Questions $2.67 \times 10^4 \text{ Pa}$, $1.00 \times 10^5 \text{ Pa}$... 1 Edit Delete
8432 \text{For the reaction:} \text{NO(g) + (1/2)O₂(g) ⇌ NO₂(g)} \text{Given:} \text{ΔfG°(NO₂) = 52.0 kJ/mol} \text{ΔfG°(NO) = 87.0 kJ/mol} \text{ΔfG°(O₂) = 0 kJ/mol} \text{The equilibrium constant for the formation of NO₂ from NO and O₂ at 298K would be:} 2 207 Recommended Questions $2.36 \times 10^4$, $3.10 \times 10^{-7}$... 3 Edit Delete
8431 \text{Given the reaction: } 2\text{N}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{N}_2\text{O(g)} \text{If a mixture of } 0.482 \text{ mol N}_2 \text{ and } 0.933 \text{ mol of O}_2 \text{ is placed in a } 10 \text{ L vessel and allowed to form N}_2\text{O (K}_c = 2.0 \times 10^{-37} \text{ L mol}^{-1}\text{), the concentration of N}_2\text{O at equilibrium will be:} 2 207 Recommended Questions $6.6 \times 10^{-21} \text{M}$, $0.6 \times 10^{-21} \text{M}$... $6.6 \times 10^{-21} \text{M}$ Edit Delete
8430 $\text{Pure liquids and solids are ignored while writing the expression for the equilibrium constant because:}$ 2 207 Recommended Questions $\text{Size and shape of a pure substance are always fixed.}$, $\text{Volume of solids and liquids is relatively fixed.}$... 2 Edit Delete
8429 \text{When the initial concentration of ICl is 0.78 M, the equilibrium concentration of ICl will be:} 2\text{ICl}_{(g)} \rightleftharpoons \text{I}_{2(g)} + \text{Cl}_{2(g)}; \quad K_c = 0.14 2 207 Recommended Questions $0.446 \text{ M}$, $0.876 \text{ M}$... 1 Edit Delete
8428 $\text{For the reaction: FeO}_{(s)} + \text{CO}_{(g)} \rightleftharpoons \text{Fe}_{(s)} + \text{CO}_2\text{(g)}, K_p = 0.265 \text{ at } 1050 \text{ K. If the initial partial pressures are } p_{\text{CO}} = 1.4 \text{ atm and } p_{\text{CO}_2} = 0.80 \text{ atm, the partial pressure of CO}_2 \text{ at equilibrium at } 1050 \text{ K would be:}$ 2 207 Recommended Questions $4.61 \text{ atm}$, $1.74 \text{ atm}$... 3 Edit Delete
8427 \text{A mixture of } 1.57 \text{ mol of } \text{N}_2\text{, } 1.92 \text{ mol of } \text{H}_2\text{, and } 8.13 \text{ mol of } \text{NH}_3 \text{ is introduced into a } 20 \text{ L vessel at } 500 \text{ K.} \text{At this temperature, the equilibrium constant, } K_c \text{ for the reaction} \text{N}_{2(g)} + 3\text{H}_{2(g)} \rightleftharpoons 2\text{NH}_{3(g)} \text{is } 1.7 \times 10^2\text{.} \text{The direction of the net reaction is:} 2 207 Recommended Questions $\text{Reaction is at equilibrium.}$, $\text{Reaction will proceed in forwarding direction.}$... 3 Edit Delete
8426 $\text{Assertion (A): The reaction for which } \Delta n = 0 \text{ there is no effect of pressure on equilibrium.}$ $\text{Reason (R): A change in pressure results in no change in the value of the equilibrium constant.}$ 2 207 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8425 \text{For the reaction: } \text{H}_2\text{(g)} + \text{I}_2\text{(g)} \rightleftharpoons 2\text{HI}\text{(g)} ; K_c = 54.8 \text{ at } 700\text{K}. \text{If } 0.5 \text{ mol L}^{-1} \text{ of HI}\text{(g)} \text{ is present at equilibrium at } 700 \text{K, the concentration of } \text{H}_2\text{(g)} \text{ and } \text{I}_2\text{(g)} \text{ would be:} 2 207 Recommended Questions $[\text{H}_2] = [\text{I}_2] = 0.05 \text{ mol L}^{-1}$, $[\text{H}_2] = 0.5 \text{ mol L}^{-1}, [\text{I}_2] = 0.05 \text{ mol L}^{-1}$... 4 Edit Delete
8424 \text{The equilibrium pressure of C}_2\text{H}_6\text{ when it is placed in a flask at 4.0 atm pressure at 899 K would be:} \text{C}_2\text{H}_6\text{(g)} \rightleftharpoons \text{C}_2\text{H}_4\text{(g)} + \text{H}_2\text{(g)} K_p = 0.04 \text{ atm at } 899 \text{ K} 2 207 Recommended Questions $4.12 \text{ atm}$, $3.62 \text{ atm}$... 2 Edit Delete
8423 $\text{Assertion (A): A catalyst does not influence the values of the equilibrium constant.}$ $\text{Reason (R): The catalyst affects the rate of both forward and reverse reactions equally.}$ 2 207 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8422 \text{The dissociation of solid NH}_4\text{SH in a closed container produces a pressure of 4 atm at 95}^\circ\text{C, then } K_p \text{ for the reaction will be:} \text{NH}_4\text{SH}_{(\text{s})} \rightleftharpoons \text{NH}_3\text{(g)} + \text{H}_2\text{S}_{(\text{g})} 2 207 Recommended Questions $4$, $8$... 1 Edit Delete
8421 \text{(a) } \mathrm{Cl_2(g)} \rightleftharpoons 2\mathrm{Cl(g)} ; K_c = 5.0 \times 10^{-39} \text{ mol/L} \text{(b) } \mathrm{Cl_2(g)} + 2\mathrm{NO(g)} \rightleftharpoons 2\mathrm{NOCl(g)} ; K_c = 3.7 \times 10^8 \text{ mol/L} \text{(c) } \mathrm{Cl_2(g)} + 2\mathrm{NO_2(g)} \rightleftharpoons 2\mathrm{NO_2Cl(g)} ; K_c = 1.8 \text{ mol/L} \text{In which of the reactions given above, will there be an appreciable concentration of both reactant(s) and product(s)?} 2 207 Recommended Questions $\text{Only reaction (a)}$, $\text{Both reactions (a) and (b)}$... 3 Edit Delete
8420 $\text{Given below are two statements:}$ $\text{Assertion (A): In the dissociation of PCl}_5 \text{ at constant pressure and temperature, the addition of helium at equilibrium increases the dissociation of PCl}_5.$ $\text{Reason (R): Helium reacts with Cl}_2.$ 2 207 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8419 $\text{At } 450 \text{ K, } K_p = 2.0 \times 10^{10} \text{ bar}^{-1} \text{ for the given reaction at equilibrium}$ $2\text{SO}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{SO}_3\text{(g)}$ $\text{The value of } K_c \text{ at this temperature would be:}$ 2 207 Recommended Questions $7.48 \times 10^{12} \text{ M}^{-1}$, $6.56 \times 10^{11} \text{ M}^{-1}$... 3 Edit Delete
8418 $\text{For the equilibrium of the reaction, } \text{HgO}_{\text{(s)}} \rightleftharpoons \text{Hg}_{\text{(g)}} + \frac{1}{2}\text{O}_2\text{(g)}, K_p \text{ for the reaction at a total pressure of }\text{\"P\"} \text{ will be:}$ 2 207 Recommended Questions $K_P = \frac{2}{3^{3/2}} \text{P}^{3/2}$, $K_P = \frac{2}{3^{1/2}} \text{P}^{1/2}$... 1 Edit Delete
8417 $\text{For the reaction, } 3\text{O}_2\text{(g)} \rightleftharpoons 2\text{O}_3\text{(g)}, K_c = 2.0 \times 10^{-50} \text{ L/mol at } 25°\text{C. If the equilibrium concentration of O}_2 \text{ in air at } 25°\text{C is } 1.6 \times 10^{-2}, \text{ the concentration of O}_3 \text{ would be:}$ 2 207 Recommended Questions $2.86 \times 10^{28} \text{ M}$, $28.66 \times 10^{-28} \text{ M}$... 4 Edit Delete
8416 \text{Match the standard free energy of the reaction with the corresponding equilibrium constant.} \text{A. } \Delta G^{\circ} > 0 \text{ 1. } K > 1 \text{B. } \Delta G^{\circ} < 0 \text{ 2. } K = 1 \text{C. } \Delta G^{\circ} = 0 \text{ 3. } K = 0 \text{ 4. } K < 1 \text{Codes:} 2 207 Recommended Questions $\text{A-4, B-1, C-2}$, $\text{A-1, B-2, C-3}$... 1 Edit Delete
8415 \text{Consider the following reaction: CO(g) + 3H}_2\text{(g) } \leftrightarrow \text{ CH}_4\text{(g) + H}_2\text{O(g). If the reaction mixture contains 0.30 mol of CO, 0.10 mol of H}_2\text{, and 0.02 mol of H}_2\text{O, and an unknown amount of CH}_4\text{ at equilibrium at 1300 K in a 1L flask, the concentration of CH}_4\text{ in the mixture will be (Kc = 3.90 at 1300 K)} 2 207 Recommended Questions $5.85 \times 10^2 \text{ M}$, $5.85 \times 10^{-1} \text{ M}$... 4 Edit Delete
8414 \text{One mole of H}_2\text{O and one mole of CO are taken in a 10 L vessel and heated to 725 K.} \text{At equilibrium, 40\% of water (by mass) reacts with CO according to the equation:} \text{H}_2\text{O(g) + CO(g) } \rightleftharpoons \text{ H}_2\text{(g) + CO}_2\text{(g)} \text{The equilibrium constant for the above-mentioned reaction would be:} 2 207 Recommended Questions $0.66$, $0.35$... 3 Edit Delete
8413 \text{Assertion: The equilibrium constant of a reaction changes by changing the stoichiometric coefficients of the reaction.} \text{Reason: The reaction, } 2\text{NO}_2(g) \rightleftharpoons \text{N}_2\text{O}_4(g) \text{ and } \text{NO}_2(g) \rightleftharpoons \frac{1}{2}\text{N}_2\text{O}_4(g) \text{ have the same equilibrium constant.} 2 207 Recommended Questions $\text{Both assertion & reason are true and the reason is the correct explanation of the assertion.}$, $\text{Both assertion & reason are true but the reason is not the correct explanation of the assertion.}$... 3 Edit Delete
8412 $\text{A sample of pure PCl}_5 \text{ was introduced into an evacuated vessel at 473 K. After equilibrium was attained, a concentration of PCl}_5 \text{ was found to be } 0.5 \times 10^{-1} \text{ mol L}^{-1}. \text{ If the value of } K_c \text{ is } 8.3 \times 10^{-3} \text{ mol L}^{-1}, \text{ the concentrations of PCl}_3 \text{ and Cl}_2 \text{ at equilibrium would be:}$ $\text{PCl}_5\text{(g)} \rightleftharpoons \text{PCl}_3\text{(g)} + \text{Cl}_2\text{(g)}$ 2 207 Recommended Questions $[\text{PCl}_3] = 0.02 \text{ mol L}^{-1}, [\text{Cl}_2] = 0.04 \text{ mol L}^{-1}$, $[\text{PCl}_3] = [\text{Cl}_2] = 0.02 \text{ mol L}^{-1}$... 2 Edit Delete
8411 $\text{Assertion (A): For a reaction, the concentration quotient (Q) is equal to K when the reaction is in equilibrium.}$ $\text{Reason (R): If a catalyst is added to the reaction at equilibrium, the value of Q remains unchanged and is no longer equal to K.}$ 2 207 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8410 $\text{For the given reaction:}$ $\text{PCl}_5\text{(g)} \rightleftharpoons \text{PCl}_3\text{(g)} + \text{Cl}_2\text{(g)}, \Delta_r H° = 124.0 \text{ kJ mol}^{-1} \text{ and } K_c = 8.3 \times 10^{-3} \text{ mol L}^{-1}$ $\text{at 473 K}$ $\text{The effect on } K_c \text{ if (i) pressure is increased and (ii) the temperature is increased will be, respectively-}$ 2 207 Recommended Questions $\text{(i) Will increase; (ii) will decrease}$, $\text{(i) Will decrease; (ii) will remain the same}$... 3 Edit Delete
8409 $\text{For the reaction,}$ $\text{N}_2\text{(g)} + 3\text{H}_2\text{(g)} \rightleftharpoons 2\text{NH}_3\text{(g)};$ $K_c = 0.061 \text{ mol}^{-2}\text{L}^2 \text{ at 500K. At a particular instant of time, [N}_2\text{] = 3.0 mol L}^{-1}\text{, [H}_2\text{] = 2.0 mol L}^{-1}\text{ and}$ $\text{[NH}_3\text{] = 0.5 mol L}^{-1}\text{.}$ $\text{True statement among the following is:}$ 2 207 Recommended Questions $\text{Reaction is at equilibrium.}$, $\text{Reaction will proceed in the forward direction.}$... 2 Edit Delete
8408 $\text{Hint: At equilibrium } K_c = Q_c.$ $\text{At equilibrium, the value of } K_c \text{ and } Q_c \text{ is the same. When } K_c > Q_c, \text{ the reaction mainly goes in the forward direction and when } K_c < Q_c, \text{ the reaction mainly goes in the backward direction.}$ 2 207 Recommended Questions Both assertion & reason are true and the reason is the correct explanation of the assertion., Both assertion & reason are true but the reason is not the correct explanation of the assertion.... 2 Edit Delete
8407 \text{The value of the equilibrium constant for a particular reaction is } 1.6 \times 10^{12}. \text{ When the system is in equilibrium, it will include:} 2 207 Recommended Questions $\text{All reactants}$, $\text{Mostly reactants}$... 3 Edit Delete
8406 \text{For the following reaction:} 2\text{SO}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{SO}_3\text{(g)} \text{The value of } K_c \text{ at equilibrium with a concentration of } [\text{SO}_2] = 0.60\text{M}, [\text{O}_2] = 0.82\text{M} \text{ and } [\text{SO}_3] = 1.90\text{M} \text{would be:} 2 207 Recommended Questions $8.5$, $9.4$... 3 Edit Delete
8405 \text{For the reaction, } 2\text{NOCl(g)} \rightleftharpoons 2\text{NO(g)} + \text{Cl}_2\text{(g)}; K_p = 1.8 \times 10^{-2} \text{ atm at } 500 \text{ K.} \text{The value of } K_c \text{ for above mentioned reaction would be:} 2 207 Recommended Questions $4.33 \times 10^{-4} \text{ mol L}^{-1}$, $4.33 \times 10^{4} \text{ mol L}^{-1}$... 1 Edit Delete
8404 \text{Given the reaction: } 2\text{HI(g)} \rightleftharpoons \text{H}_2\text{(g)} + \text{I}_2\text{(g)} \text{A sample of HI(g) is placed in a flask at a pressure of 0.2 atm.} \text{At equilibrium, the partial pressure of HI(g) is 0.04 atm.} \text{The } K_P \text{ for the given equilibrium would be:} 2 207 Recommended Questions $2.0$, $3.5$... 3 Edit Delete
8403 \text{Assertion (A): For any chemical reaction at a particular temperature, the equilibrium constant is fixed and is a characteristic property.} \text{Reason (R): Equilibrium constant is independent of temperature.} 2 207 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8402 $\text{For the reaction } \text{H}_2\text{(g)} + \text{I}_2\text{(g)} \rightleftharpoons 2\text{HI}\text{(g)}, \text{ the standard free energy is}$ $\Delta G^\Theta > 0. \text{ The equilibrium constant (}K_c\text{) would be :}$ 2 207 Recommended Questions $K_c = 0$, $K_c > 1$... 4 Edit Delete
8401 $\text{Some reactions are written below in Column I and their equilibrium constants in terms of } K_c \text{ are written in Column II.}$ $\text{Match the following reactions with the corresponding equilibrium constant.}$ $\begin{array}{ll} \text{Column I (Reaction)} & \text{Column II (Equilibrium constant)} \\ \text{A. } 2\text{N}_2\text{(g)} + 6\text{H}_2\text{(g)} \rightleftharpoons 4\text{NH}_3\text{(g)} & \text{1. } 2K_c \\ \text{B. } 2\text{NH}_3\text{(g)} \rightleftharpoons \text{N}_2\text{(g)} + 3\text{H}_2\text{(g)} & \text{2. } K_c^{1/2} \\ \text{C. } \frac{1}{2}\text{N}_2\text{(g)} + \frac{3}{2}\text{H}_2\text{(g)} \rightleftharpoons \text{NH}_3\text{(g)} & \text{3. } \frac{1}{K_c} \\ & \text{4. } K_c^2 \end{array}$ 2 207 Recommended Questions $\text{A-4, B-3, C-2}$, $\text{A-1, B-2, C-3}$... 1 Edit Delete
8400 \text{PCl}_5\text{, PCl}_3\text{, and Cl}_2\text{ are at equilibrium at 500 K in a closed container and their concentrations are }0.8 \times 10^{-3}\text{ mol L}^{-1}\text{, }1.2 \times 10^{-3}\text{ mol L}^{-1}\text{ and }1.2 \times 10^{-3}\text{ mol L}^{-1}\text{, respectively.} \text{The value of }K_c\text{ for the reaction }\text{PCl}_5(g) \rightleftharpoons \text{PCl}_3(g) + \text{Cl}_2(g)\text{ will be:} 2 207 Recommended Questions $1.8 \times 10^3 \text{ mol L}^{-1}$, $1.8 \times 10^3$... 3 Edit Delete
8399 $\text{For the reaction } 2\text{NOCl}_{(g)} \rightleftharpoons 2\text{NO}_{(g)} + \text{Cl}_2\text{(g)}, K_C \text{ at } 427°\text{C is } 3 \times 10^{-6} \text{ mol L}^{-1}\text{. The value of } K_P \text{ will be:}$ 2 207 Recommended Questions $1.72 \times 10^{-4}$, $7.50 \times 10^5$... $1.72 \times 10^{-4}$ Edit Delete
8398 \text{The value of } \Delta n \text{ for the following reaction will be:} \text{NH}_4\text{Cl}_{(\text{s})} \rightleftharpoons \text{NH}_3_{(\text{g})} + \text{HCl}_{(\text{g})} 2 207 Recommended Questions $1$, $0.5$... $2$ Edit Delete
8397 \text{For the following equilibrium, } K_c = 6.3 \times 10^{14} \text{ at 1000 K} \text{NO(g) + O}_3\text{(g) } \to \text{ NO}_2\text{(g) + O}_2\text{(g)} \text{The value of } K_c \text{ for the reverse reaction is:} 2 207 Recommended Questions $2.33 \times 10^{-16}$, $1.59 \times 10^{-15}$... $1.59 \times 10^{-15}$ Edit Delete
8396 $\text{The value of the equilibrium constant of the reaction}$ $\text{HI(g)} \rightleftharpoons \frac{1}{2}\text{H}_2\text{(g)} + \frac{1}{2}\text{I}_2 \text{ is 8.0.}$ $\text{The equilibrium constant of the reaction}$ $\text{H}_2\text{(g)} + \text{I}_2\text{(g)} \rightleftharpoons \text{2HI(g) will be-}$ 2 207 Recommended Questions $\frac{1}{16}$, $\frac{1}{64}$... 2 Edit Delete
8395 $\text{For the reaction } \text{N}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{NO}\text{(g)} \text{ the equilibrium constant is } K_1.$ $\text{The equilibrium constant is } K_2 \text{ for the reaction } 2\text{NO}\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{NO}_2\text{(g)}$ $\text{The value of K for the reaction given below will be:}$ $\text{NO}_2\text{(g)} \rightleftharpoons \frac{1}{2}\text{N}_2\text{(g)} + \text{O}_2\text{(g)}$ 2 207 Recommended Questions $\frac{1}{4}(4)K_1K_2$, $\left[\frac{1}{K_1K_2}\right]^{1/2}$... 2 Edit Delete
8394 $\text{The equilibrium reaction that doesn't have equal values for K}_C \text{ and K}_P \text{ is:}$ 2 207 Recommended Questions $\text{2NO(g)} \rightleftharpoons \text{N}_2\text{(g)} + \text{O}_2\text{(g)}$, $\text{SO}_2\text{(g)} + \text{NO}_2\text{(g)} \rightleftharpoons \text{SO}_3\text{(g)} + \text{NO(g)}$... 4 Edit Delete
8393 $K_c = \frac{[\text{NH}_3]^4[\text{O}_2]^5}{[\text{NO}]^4[\text{H}_2\text{O}]^6}$ $\text{The balanced chemical equation corresponding to the above-mentioned expression is:}$ 2 207 Recommended Questions $4\text{NO}_{(g)} + 6\text{H}_2\text{O}_{(g)} \rightleftharpoons 4\text{NH}_3\text{(g)} + 5\text{O}_2\text{(g)}$, $4\text{NH}_3\text{(g)} + 5\text{O}_2\text{(g)} \rightleftharpoons 4\text{NO}_{(g)} + 6\text{H}_2\text{O}_{(g)}$... 1 Edit Delete
8392 $\text{The ratio of }\frac{K_P}{K_C}\text{ for the reaction}$ $\text{CO(g)} + \frac{1}{2}\text{O}_2\text{(g)} \rightleftharpoons \text{CO}_2\text{(g) is:}$ 2 207 Recommended Questions $(\text{RT})^{1/2}$, $(\text{RT})^{-1/2}$... 2 Edit Delete
8391 $\text{When hydrochloric acid is added to cobalt nitrate solution at room temperature, the following reaction takes place and the reaction mixture becomes blue. On cooling the mixture it becomes pink}$ $[\text{Co}(\text{H}_2\text{O})_6]^{3+}\text{(aq)} + 4\text{Cl}^-\text{(aq)} \rightleftharpoons [\text{CoCl}_4]^{2-}\text{(aq)} + 6\text{H}_2\text{O}\text{(l)}$ $\text{(Pink)} \qquad\qquad\qquad\qquad\qquad\qquad \text{(Blue)}$ $\text{On the basis of the information given above, mark the correct answer:}$ 2 207 Recommended Questions $\Delta H > 0 \text{ for the reaction}$, $\Delta H < 0 \text{ for the reaction}$... 1 Edit Delete
8390 $\text{On increasing the pressure, the direction in which the gas phase reaction proceeds to re-establish equilibrium is predicted by applying Le-Chatelier's principle. Consider the reaction,}$ $\text{N}_2\text{(g)} + \text{3H}_2\text{(g)} \rightleftharpoons \text{2NH}_3\text{(g)}$ $\text{Which of the following is correct, if the total pressure at which the equilibrium is established is increased without changing the temperature?}$ 2 207 Recommended Questions $\text{K will remain the same.}$, $\text{K will decrease.}$... 1 Edit Delete
8389 $\text{According to Le-Chatelier's principle, adding heat to a solid} \rightleftharpoons \text{liquid equilibrium will cause the:}$ 2 207 Recommended Questions $\text{Temperature to increase}$, $\text{Temperature to decrease}$... 4 Edit Delete
8388 $\text{Inert gas is added to the equilibrium PCl}_5\text{(g)} \rightleftharpoons \text{PCl}_3\text{(g) + Cl}_2\text{(g) at constant pressure. The degree of dissociation will:}$ 2 207 Recommended Questions $\text{Remain unchanged}$, $\text{Decrease}$... 3 Edit Delete
8387 $\text{For the reaction,}$ $\text{PCl}_5\text{(g)} \rightleftharpoons \text{PCl}_3\text{(g)} + \text{Cl}_2\text{(g)}$ $\text{The forward reaction at constant temperature is favoured by:}$ 2 207 Recommended Questions $\text{Introducing an inert gas at a constant volume}$, $\text{Introducing chlorine gas at a constant volume}$... 3 Edit Delete
8386 $\text{(a) PCl}_5\text{(g)} \rightleftharpoons \text{PCl}_3\text{(g)} + \text{Cl}_2\text{(g)}$ $\text{(b) CaO}_{\text{(s)}} + \text{CO}_2\text{(g)} \rightleftharpoons \text{CaCO}_3\text{(s)}$ $\text{(c) 3Fe}_{\text{(s)}} + 4\text{H}_2\text{O}_{\text{(g)}} \rightleftharpoons \text{Fe}_3\text{O}_4\text{(s)} + 4\text{H}_2\text{(g)}$ $\text{The effect of an increase in the volume on the number of moles of products in the above-mentioned reactions would be, respectively:}$ 2 207 Recommended Questions $\text{a) Increase, b) decrease, c) same}$, $\text{a) Decrease, b) same, c) increase}$... 1 Edit Delete
8385 $\text{Consider the following reactions:}$ $\text{(i) COCl}_2 \text{ (g)} \rightleftharpoons \text{CO (g) + Cl}_2 \text{ (g)}$ $\text{(ii) CO}_2 \text{ (g) + C (s)} \rightleftharpoons \text{2CO (g)}$ $\text{(iii) 2H}_2 \text{ (g) + CO (g)} \rightleftharpoons \text{CH}_3\text{OH (g)}$ $\text{Which reaction(s) will shift in a backward direction when the pressure is increased?}$ 2 207 Recommended Questions $\text{Only (iii)}$, $\text{Only (ii)}$... 3 Edit Delete
8384 $\text{The addition of a small amount of argon at a constant volume will not affect the equilibrium of the following reaction:}$ 2 207 Recommended Questions $\text{H}_2\text{(g)}+\text{I}_2\text{(g)} \rightleftharpoons \text{2HI(g)}$, $\text{PCl}_5\text{(g)} \rightleftharpoons \text{PCl}_3\text{(g)}+\text{Cl}_2\text{(g)}$... 4 Edit Delete
8383 $\text{Mark the conditions that favour the maximum product formation in the given reaction.}$ $\text{A}_2\text{(g)} + \text{B}_2\text{(g)} \rightleftharpoons \text{X}_2\text{(g)}, \Delta_r H = -X \text{ kJ}$ 2 207 Recommended Questions $\text{Low temperature and High pressure}$, $\text{Low temperature and Low pressure}$... 1 Edit Delete
8382 $\text{Given a hypothetical reaction :}$ $\text{AB}_2\text{(g)}+\frac{1}{2}\text{B}_2\text{(g)}\rightleftharpoons \text{AB}_3\text{(g)}; \Delta\text{H} = -\text{x kJ}$ $\text{More AB}_3 \text{ could be produced at equilibrium by :}$ 2 207 Recommended Questions $\text{Using a catalyst}$, $\text{Removing some of B}_2 \text{ gas}$... 4 Edit Delete
8381 $\text{Given an endothermic reaction:}$ $\text{CH}_4\text{(g)} + \text{H}_2\text{O}\text{(g)} \rightleftharpoons \text{CO}\text{(g)} + 3\text{H}_2\text{(g)}$ $\text{If the temperature is increased, then:}$ 2 207 Recommended Questions $\text{The equilibrium will not be disturbed.}$, $\text{The equilibrium will shift in the backward direction.}$... 3 Edit Delete
8380 $\text{For the following reaction,}$ $\text{H}_2\text{(g)}+\text{I}_2\text{(g)} \rightleftharpoons \text{2HI(g)} \text{ at } 250^{\circ} \text{C,}$ $\text{The effect on the state of equilibrium on doubling the volume of the system will be:}$ 2 207 Recommended Questions $\text{Shift to the reactant side}$, $\text{Shift to the product side}$... 3 Edit Delete
8379 $\text{The volume of the container containing a liquid and its vapours at a constant temperature is suddenly increased. What would be the effect of the change on vapour pressure?}$ 2 207 Recommended Questions $\text{It would decrease initially.}$, $\text{It would increase initially.}$... 1 Edit Delete
8378 $\text{An incorrect statement about equilibrium among the following is:}$ 2 207 Recommended Questions $\text{In equilibrium mixture of ice and water kept in perfectly insulated flask, the mass of ice and water does not change with time.}$, $\text{The intensity of the red colour increases when oxalic acid is added to a solution containing iron (III) nitrate and potassium thiocyanate.}$... 2 Edit Delete
8377 $\text{HI was heated in a sealed tube at 440}^{\circ} \text{C till the equilibrium was reached. At this point, HI was found to be 22 \% decomposed. The equilibrium constant for this dissociation is:}$ 2 207 Recommended Questions $0.28$, $0.08$... 3 Edit Delete
8376 $\text{Which of the following is an example of a reversible reaction?}$ 2 207 Recommended Questions $\text{KNO}_3\text{(aq)} + \text{NaCl}\text{(aq)} \rightleftharpoons \text{KCl}\text{(aq)} + \text{NaNO}_3\text{(aq)}$, $2\text{Na}\text{(s)} + \text{H}_2\text{O}\text{(l)} \rightleftharpoons 2\text{NaOH}\text{(aq)} + \text{H}_2\text{(g)}$... 1 Edit Delete
8375 $\text{In the reaction A(g) + 2B(g)} \rightleftharpoons \text{2C(g) + D(g), the initial concentration of B is twice that of A and, at equilibrium, the concentrations of A and D are equal. The value of the equilibrium constant will be:}$ 2 207 Recommended Questions $4$, $16$... 4 Edit Delete
8374 \text{For a reaction, } 2\text{NO}_{(g)} + \text{Br}_{2(g)} \rightleftharpoons 2\text{NOBr}_{(g)} \text{When 0.087 mol of NO and 0.0437 mol of Br}_2 \text{ are mixed in a closed container at a constant temperature, 0.0518 mol of NOBr is obtained at equilibrium. The concentration of NO and Br}_2 \text{ at equilibrium will be:} 2 207 Recommended Questions $\text{NO} = 0.0352 \text{ mol}; \text{Br}_2 = 0.0178 \text{ mol}$, $\text{NO} = 0.352 \text{ mol}; \text{Br}_2 = 0.178 \text{ mol}$... 1 Edit Delete
8373 $\text{An incorrect statement about equilibrium among the following is:}$ 2 207 Recommended Questions $\text{Equilibrium is possible only in a closed system at a constant temperature.}$, $\text{All measurable properties of the system remain constant.}$... 3 Edit Delete
8372 $\text{Reaction quotient for the reaction, } \text{N}_2\text{(g)} + 3\text{H}_2\text{(g)} \rightleftharpoons 2\text{NH}_3\text{(g)} \text{ is given by}$ $Q = \frac{[\text{NH}_3]^2}{[\text{N}_2][\text{H}_2]^3}. \text{The reaction will proceed from right to left if } K_c \text{ value is:}$ 2 207 Recommended Questions $Q < K_c$, $Q = 0$... 3 Edit Delete
8371 $\text{If the molar concentration of SnCl}_4 \text{ is } 1.5 \times 10^{-3} \text{ mol L}^{-1}\text{, the concentration of chloride ions will be:}$ 2 207 Recommended Questions $3.0 \times 10^{-3}$, $6.0 \times 10^{-3}$... 2 Edit Delete
8370 K_{a1}, K_{a2} \text{ and } K_{a3} \text{ are the respective ionisation constants for the following reactions:} \text{H}_2\text{S} \rightleftharpoons \text{H}^+ + \text{HS}^- \text{HS}^- \rightleftharpoons \text{H}^+ + \text{S}^{2-} \text{H}_2\text{S} \rightleftharpoons 2\text{H}^+ + \text{S}^{2-} \text{The correct relationship between } K_{a1}, K_{a2} \text{ and } K_{a3} \text{ is:} 2 207 Recommended Questions $\text{K}_{a_3} = \text{K}_{a_1} \times \text{K}_{a_2}$, $\text{K}_{a_3} = \text{K}_{a_1} + \text{K}_{a_2}$... 1 Edit Delete
8369 $\text{I}_2\text{(s)} + 5\text{F}_2\text{(g)} \rightarrow 2\text{IF}_5\text{(g)}$ $\text{The equilibrium constant } K_C \text{ expression for the above mentioned reaction is:}$ 2 207 Recommended Questions $K_C = \frac{[\text{IF}_5]^2}{[\text{F}_2]^5}$, $K_C = \frac{[\text{IF}_5]^2}{[\text{F}_2]^5 [\text{I}_2]}$... 1 Edit Delete
8368 $\text{In the reaction, } \text{N}_2\text{O}_4\text{(g)} \rightleftharpoons 2\text{NO}_2\text{(g)}, \alpha \text{ is that part of } \text{N}_2\text{O}_4 \text{ which dissociates.}$ $\text{The number of moles at equilibrium will be:}$ 2 207 Recommended Questions $(1 - \alpha)^2$, $3\alpha$... 4 Edit Delete
8367 $\text{Match the following equilibria with the corresponding condition.}$ $\text{A. Liquid} \rightleftharpoons \text{Vapour}$ $\text{B. Solid} \rightleftharpoons \text{Liquid}$ $\text{C. Solid} \rightleftharpoons \text{Vapour}$ $\text{D. Solute (s)} \rightleftharpoons \text{Solute (solution)}$ $\text{1. Saturated solution}$ $\text{2. Boiling point}$ $\text{3. Sublimation point}$ $\text{4. Melting point}$ $\text{5. Unsaturated solution}$ 2 207 Recommended Questions $\text{A-2, B-4, C-3, D-1}$, $\text{A-1, B-2, C-3, D-5}$... 1 Edit Delete
8366 $\text{Equilibrium is represented by:}$ 2 206 Recommended Questions $\Delta H = 0$, $\Delta G_{\text{Total}} = 0$... 3 Edit Delete
8365 $\text{For the reaction } 2\text{A}_{\text{(g)}} + \text{B}_{\text{(g)}} \rightarrow 2\text{D}_{\text{(g)}}; \Delta U^o = -10.5 \text{ kJ and } \Delta S^o = -44.1 \text{ J K}^{-1}\text{, the value of } \Delta G^o \text{ for the given reaction would be-}$ 2 206 Recommended Questions $1.6 \text{ J}$, $-0.16 \text{ kJ}$... 3 Edit Delete
8364 \text{Calculate } \Delta_r H° \text{ (in kJ/mol) for Cr}_2\text{O}_3 \text{ from the } \Delta_r G° \text{ and the } S° \text{ values provided at 27°C} 4\text{Cr(s)} + 3\text{O}_2\text{(g)} → 2\text{Cr}_2\text{O}_3\text{(s)} \Delta_r G° = -2093.4 \text{ kJ/mol} \text{S° (J/K·mol): Cr(s) = 24} \text{O}_2\text{(g) = 205; Cr}_2\text{O}_3\text{(s) = 81} 2 206 Recommended Questions $-2258.1 \text{ kJ/mol}$, $-1129.05 \text{ kJ/mol}$... 2 Edit Delete
8363 $\text{In the reaction, } \Delta H \text{ and } \Delta S \text{ both are positive. The condition under which the reaction would not be spontaneous is -}$ 2 206 Recommended Questions $\Delta H > T\Delta S$, $\Delta S = \Delta H/T$... 4 Edit Delete
8362 $\text{The standard free energies of formation (in kJ/mol) at 298 K are -237.2, -394.4, and -8.2 for H}_2\text{O}_{\text{(l)}}\text{, CO}_{2\text{(g)}}\text{, and pentane (g), respectively. The value of E}_{\text{cell}} \text{ for the pentane-oxygen fuel cell is:}$ 2 206 Recommended Questions $1.968 \text{ V}$, $2.0968 \text{ V}$... 3 Edit Delete
8361 $\text{The free energy change } (\Delta G^o) \text{ is negative when -}$ 2 206 Recommended Questions $\text{The surroundings do no electrical work on the system.}$, $\text{The surroundings do electrical work on the system.}$... 3 Edit Delete
8360 \text{Given the Gibbs free energy change, } \Delta G^{\circ} = +63.3 \text{ kJ, for the following reaction,} \text{Ag}_2\text{CO}_3\text{(s)} \rightarrow 2\text{Ag}^+\text{(aq)} + \text{CO}_3^{2-}\text{(aq)} K_{\text{sp}} \text{ of Ag}_2\text{CO}_3\text{(s)} \text{ in water at } 25°\text{C is:} (R = 8.314 \text{ J K}^{-1} \text{mol}^{-1}) 2 206 Recommended Questions $3.2 \times 10^{26}$, $8.0 \times 10^{-12}$... 2 Edit Delete
8359 $\text{The equilibrium constant for a reaction is 10. The value of } \Delta G^o \text{ will be:}$\n\n$(R = 8.314 \text{ J K}^{-1} \text{mol}^{-1}; T = 300 \text{ K})$ 2 206 Recommended Questions $-5.74 \text{ kJ mol}^{-1}$, $-5.74 \text{ J mol}^{-1}$... 1 Edit Delete
8358 $\text{For a given reaction, } \Delta H = 35.5 \text{ kJ mol}^{-1} \text{ and } \Delta S = 83.6 \text{ J K}^{-1} \text{mol}^{-1}\text{. The reaction is spontaneous at:}$\n\n$\text{(Assume that } \Delta H \text{ and } \Delta S \text{ do not vary with temperature)}$ 2 206 Recommended Questions $T < 425 \text{ K}$, $T > 425 \text{ K}$... 2 Edit Delete
8357 $\text{Hydrolysis of sucrose is given by the following reaction}$\n\n$\text{Sucrose} + \text{H}_2\text{O} \rightleftharpoons \text{Glucose} + \text{Fructose}$\n\n$\text{If the equilibrium constant (K}_c\text{) is } 2 \times 10^{13} \text{ at 300 K, the value of } \Delta_r G^o \text{ at the same temperature will be:}$ 2 206 Recommended Questions $8.314 \text{ J mol}^{-1} \text{K}^{-1} \times 300 \text{ K} \times \ln(2 \times 10^{13})$, $8.314 \text{ J mol}^{-1} \text{K}^{-1} \times 300 \text{ K} \times \ln(3 \times 10^{13})$... 4 Edit Delete
8356 $\text{The correct statement for a reversible process in a state of equilibrium is:}$ 2 206 Recommended Questions $\Delta G = -2.30RT \log K$, $\Delta G = 2.30RT \log K$... 3 Edit Delete
8355 $\text{The free energy change due to a reaction is zero when-}$ 2 206 Recommended Questions $\text{The reactants are initially mixed}$, $\text{A catalyst is added}$... 3 Edit Delete
8354 $\text{The values of } \Delta H \text{ and } \Delta S \text{ for the given reaction are 170 kJ and 170 J K}^{-1}\text{, respectively.}$\n\n$\text{C}_{\text{(graphite)}} + \text{CO}_{2\text{(g)}} \rightarrow 2\text{CO}_{\text{(g)}}$\n\n$\text{This reaction will be spontaneous at:}$ 2 206 Recommended Questions $710 \text{ K}$, $910 \text{ K}$... 3 Edit Delete
8353 $\text{The entropy change in the surroundings when 1.00 mol of H}_2\text{O}_{(l)} \text{ is formed under standard conditions is:}$ $\Delta_f H^\theta = -286 \text{ kJ mol}^{-1}$ 2 206 Recommended Questions $952.5 \text{ J mol}^{-1}$, $979.7 \text{ J mol}^{-1}$... 4 Edit Delete
8352 $\text{An enthalpy diagram for a particular reaction is given below:}$ $\text{[Enthalpy diagram showing reactants at energy level H}_r\text{, products at energy level H}_p\text{, with }\Delta_f\text{H indicated as net heat absorbed from surroundings. The diagram shows H}_p > \text{H}_r\text{]}$ $\text{The correct statement among the following is-}$ $\text{1. Reaction is spontaneous}$ $\text{2. Reaction is non-spontaneous}$ $\text{3. Cannot predict spontaneity of the reaction from the graph given above}$ $\text{4. None of the above}$ 2 206 Recommended Questions $\text{Reaction is spontaneous}$, $\text{Reaction is non-spontaneous}$... 3 Edit Delete
8351 $\text{For the reaction A + B}$ $\rightarrow$ $\text{C + D + q (kJ/mol), entropy change is positive. The reaction will be}$ $\text{1. Possible only at high temperature}$ $\text{2. Possible only at low temperature}$ $\text{3. Not possible at any temperature}$ $\text{4. Possible at any temperature}$ 2 206 Recommended Questions $\text{Possible only at high temperature}$, $\text{Possible only at low temperature}$... 4 Edit Delete
8350 $\text{Entropy decreases in which of the following reactions?}$ $\text{1. Boiling of egg}$ $\text{2. Combustion of benzene at 127}^{\circ}\text{C}$ $\text{3. Stretching of rubber band}$ $\text{4. Dissolution of sugar in water}$ 2 206 Recommended Questions $\text{Boiling of egg}$, $\text{Combustion of benzene at 127}^{\circ}\text{C}$... 3 Edit Delete
8349 \text{Select the correct option based on statements below:} \textbf{Assertion (A):} \text{Spontaneous process is an irreversible process and may be reversed by some external agency.} \textbf{Reason (R):} \text{A decrease in enthalpy is a contributing factor to spontaneity.} \text{1. Both (A) and (R) are True and (R) is the correct explanation of (A).} \text{2. Both (A) and (R) are True but (R) is not the correct explanation of (A).} \text{3. (A) is True but (R) is False.} \text{4. (A) is False but (R) is True.} 2 206 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8348 \text{For } A \rightarrow B, \Delta H = 4 \text{ kcal mol}^{-1}, \Delta S = 10 \text{ cal mol}^{-1} \text{ K}^{-1}, \text{ the reaction is spontaneous when the temperature is:} \text{1. 400 K} \text{2. 300 K} \text{3. 500 K} \text{4. None of the above} 2 206 Recommended Questions $\text{400 K}$, $\text{300 K}$... 3 Edit Delete
8347 \text{The entropy change can be calculated by using the expression } \Delta S = \frac{q_{rev}}{T} \text{When water freezes in a glass beaker, the correct statement among the following is:} \text{1. } \Delta S \text{ (system) decreases but } \Delta S \text{ (surroundings) remains the same.} \text{2. } \Delta S \text{ (system) increases but } \Delta S \text{ (surroundings) decreases.} \text{3. } \Delta S \text{ (system) decreases but } \Delta S \text{ (surroundings) increases.} \text{4. } \Delta S \text{ (system) decreases but } \Delta S \text{ (surroundings) also decreases.} 2 206 Recommended Questions $\Delta \text{ S (system) decreases but } \Delta \text{ S (surroundings) remains the same.}$, $\Delta \text{ S (system) increases but } \Delta \text{ S (surroundings) decreases.}$... 3 Edit Delete
8346 $\text{The entropy change in the conversion of one mole of liquid water at 373 K to vapour at the same temperature would be: (Latent heat of vaporization of water,}$ $\Delta H_{vap} = 2.257 \text{ kJ/g)}$ 2 206 Recommended Questions $105.9 \text{ JK}^{-1}\text{mol}^{-1}$, $107.9 \text{ JK}^{-1}\text{mol}^{-1}$... 3 Edit Delete
8345 $\text{For the reaction, 2Cl(g)} \rightarrow \text{Cl}_2\text{(g), the correct option is:}$ 2 206 Recommended Questions $\Delta_r\text{H} > 0 \text{ and } \Delta_r \text{S} < 0$, $\Delta_r\text{H} < 0 \text{ and } \Delta_r \text{S} > 0$... 3 Edit Delete
8344 $\text{For the conversion }\text{C}_{(\text{graphite})} \rightarrow \text{C}_{(\text{diamond})}\text{ the }\Delta S\text{ is:}$ 2 206 Recommended Questions $\text{Zero}$, $\text{Positive}$... 3 Edit Delete
8343 \text{Select the correct option based on statements below:} \text{Assertion (A): Dissolution of sugar in water proceeds via an increase in entropy.} \text{Reason (R): Entropy decreases, when an egg is boiled hard.} \text{1. Both (A) and (R) are true and (R) is the correct explanation of (A).} \text{2. Both (A) and (R) are true but (R) is not the correct explanation of (A).} \text{3. (A) is true but (R) is false.} \text{4. Both (A) and (R) are false.} 2 206 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
8342 \text{The molar entropy of the vapourization of acetic acid is } 14.4 \text{ cal K}^{-1} \text{ mol}^{-1} \text{ at its boiling point } 118°\text{C}. \text{The latent heat of vapourization of acetic acid is:} \text{1. } 49 \text{ cal g}^{-1} \quad \text{2. } 64 \text{ cal g}^{-1} \text{3. } 94 \text{ cal g}^{-1} \quad \text{4. } 84 \text{ cal g}^{-1} 2 206 Recommended Questions $49 \text{ cal g}^{-1}$, $64 \text{ cal g}^{-1}$... 3 Edit Delete
8341 $\text{1 mole of an ideal gas at 25}^{\circ} \text{C is subjected to expand reversibly ten times of its initial volume. The change in entropy of expansion is:}$ 2 206 Recommended Questions $19.15 \text{ JK}^{-1}\text{mol}^{-1}$, $16.15 \text{ JK}^{-1}\text{mol}^{-1}$... 1 Edit Delete
8340 \text{For exothermic reaction to be spontaneous } (\Delta S \text{ = negative}) \text{ temperature must be:} \begin{array}{cccc} \text{1. High} & \text{2. Zero} & \text{3. Constant} & \text{4. Low} \end{array} 2 206 Recommended Questions $\text{High}$, $\text{Zero}$... 4 Edit Delete
8339 $\text{The occurrence of a reaction is impossible if:}$ 2 206 Recommended Questions $\Delta\text{H is +ve ; }\Delta\text{S is also + ve but }\Delta\text{H < T}\Delta\text{S}$, $\Delta\text{H is - ve ; }\Delta\text{S is also - ve but }\Delta\text{H > T}\Delta\text{S}$... 4 Edit Delete
8338 $\text{Change in entropy is negative for:}$ 2 206 Recommended Questions $\text{Bromine (l)}\rightarrow\text{Bromine(g)}$, $\text{C(s) + H}_2\text{O(g)} \rightarrow\text{CO(g) + H}_2\text{(g)}$... 4 Edit Delete
8337 $\text{The entropy change in the isothermal reversible expansion of 2 moles of an ideal gas from 10 to 100 L at 300 K is}$ 2 206 Recommended Questions $42.3 \text{ J K}^{-1}$, $35.8 \text{ J K}^{-1}$... 3 Edit Delete
8336 $\text{H}^+_{(aq)} + \text{OH}^-_{(aq)} \rightarrow \text{H}_2\text{O}_{(l)} \quad \text{S}^{\circ}(298 \text{ K})$ $\quad -10.7 \text{ JK}^{-1} \quad\quad +70 \text{ JK}^{-1}\text{ mol}^{-1}$ $\text{Standard entropy change for the above reaction is:}$ 2 206 Recommended Questions $60.3 \text{ JK}^{-1} \text{ mol}^{-1}$, $80.7 \text{ JK}^{-1} \text{ mol}^{-1}$... 2 Edit Delete
8335 $\text{Which of the following thermodynamic quantities is an outcome of the second law of thermodynamics?}$ 2 206 Recommended Questions $\text{Work}$, $\text{Enthalpy}$... 4 Edit Delete
8334 \text{Match the following parameters with a description for spontaneity.} \text{A. } \Delta_r H^{\circ} = +, \Delta_r S^{\circ} = -, \Delta_r G^{\circ} = + \text{ → Non-spontaneous at high temperature} \text{B. } \Delta_r H^{\circ} = -, \Delta_r S^{\circ} = -, \Delta_r G^{\circ} = \text{+ at high T} \text{ → Spontaneous at all temperatures} \text{C. } \Delta_r H^{\circ} = -, \Delta_r S^{\circ} = +, \Delta_r G^{\circ} = - \text{ → Non-spontaneous at all temperatures} \text{Codes:} \text{1. A-3, B-1, C-2} \text{2. A-1, B-2, C-3} \text{3. A-1, B-3, C-2} \text{4. A-3, B-2, C-1} 2 206 Recommended Questions $\text{A} \rightarrow 3, \text{B} \rightarrow 1, \text{C} \rightarrow 2$, $\text{A} \rightarrow 1, \text{B} \rightarrow 2, \text{C} \rightarrow 3$... 1 Edit Delete
8333 $\text{For the reaction,}$ $2\text{Cl}(g) \rightarrow \text{Cl}_2(g)$, $\text{the value of}$ $\Delta\text{H}$ $\text{and}$ $\Delta\text{S}$ $\text{are respectively:}$ 2 206 Recommended Questions $\Delta\text{H} = 0$, $\Delta\text{S} = -\text{ve}$, $\Delta\text{H} = 0$, $\Delta\text{S} = 0$... 3 Edit Delete
8332 $\text{Match the following process with entropy change:}$ 2 206 Recommended Questions $\begin{array}{|c|c|c|c|} \hline & A & B & C \\ \hline 1. & 2 & 3 & 1 \\ \hline 2. & 1 & 2 & 3 \\ \hline 3. & 1 & 3 & 2 \\ \hline 4. & 3 & 2 & 1 \\ \hline \end{array}$, $\begin{array}{|c|c|c|c|} \hline & A & B & C \\ \hline 1. & 1 & 2 & 3 \\ \hline 2. & 1 & 2 & 3 \\ \hline 3. & 1 & 3 & 2 \\ \hline 4. & 3 & 2 & 1 \\ \hline \end{array}$... 1 Edit Delete
8331 $\text{At a temperature of 300K, what is the entropy change for the reaction given below?}$ $2\text{H}_2 \text{ (g)} + \text{O}_2 \text{ (g)} \rightarrow 2\text{H}_2\text{O(l)}$ $\text{Standard entropies of H}_2 \text{ (g), O}_2\text{(g) and H}_2\text{O(l) are 126.6, 201.20 and 68.0 JK}^{-1}\text{mol}^{-1} \text{ respectively.}$ 2 206 Recommended Questions $-318.4 \text{ JK}^{-1}\text{mol}^{-1}$, $318.4 \text{ JK}^{-1}\text{mol}^{-1}$... 1 Edit Delete
8330 $\text{The entropy change in the fusion of one mole of a solid melting at } 27^{\circ} \text{C is:}$ $(\text{the latent heat of fusion is } 2930 \text{ J mol}^{-1})$ 2 206 Recommended Questions $9.77 \text{ JK}^{-1}\text{mol}^{-1}$, $19.73 \text{ JK}^{-1}\text{mol}^{-1}$... 1 Edit Delete
8329 $\text{Entropy decreases during:}$ 2 206 Recommended Questions $\text{Crystallization of sucrose from solution}$, $\text{Rusting of iron}$... 1 Edit Delete
8328 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): A liquid crystallizes into a solid and is accompanied by a decrease in entropy.}$ $\text{Reason (R): In crystals, molecules organize in an ordered manner.}$ 2 206 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8327 $\text{Which of the following is not correct?}$ 2 206 Recommended Questions $\Delta\text{G is zero for a reversible reaction.}$, $\Delta\text{G is positive for a spontaneous reaction.}$... 2 Edit Delete
8326 $\text{The enthalpy and entropy change for the reaction:}$ $\text{Br}_2 \text{(l)} + \text{Cl}_2 \text{(g)}\rightarrow 2\text{BrCl (g)}$ $\text{are } 30 \text{ kJ mol}^{-1} \text{ and } 105 \text{ J K}^{-1} \text{ mol}^{-1} \text{ respectively.}$ $\text{The temperature at which the reaction will be in equilibrium is:}$ 2 206 Recommended Questions $285.7 \text{ K}$, $273.4 \text{ K}$... 1 Edit Delete
8325 $\text{The unit of entropy is -}$ 2 206 Recommended Questions $\text{J mol}^{-1}$, $\text{JK mol}^{-1}$... 3 Edit Delete
8324 $\text{The maximum work done in expanding 16g O}_2 \text{ isothermally at 300 K and occupying a volume of}$ $\text{5 dm}^3 \text{ until the volume becomes 25 dm}^3 \text{ is:}$ 2 206 Recommended Questions $-2.01 \times 10^3 \text{ J}$, $2.01 \times 10^{-3} \text{ J}$... 1 Edit Delete
8323 $\text{For the reaction}$ $\text{CH}_3\text{COOH (l)} + 2\text{O}_2 \text{(g)} \rightleftharpoons 2\text{CO}_2 \text{(g)} + 2\text{H}_2\text{O(l)}$ $\text{at } 25^{\circ}\text{C and 1 atm. pressure, } \Delta\text{H} = -874 \text{ kJ. The change in internal energy (}\Delta\text{E) is:}$ 2 206 Recommended Questions $-874 \text{ kJ}$, $-971.53 \text{ kJ}$... 1 Edit Delete
8322 $\text{4.8 g of C(diamond) on complete combustion evolves 1584 kJ of heat. The standard heat of the formation of gaseous carbon is 725 kJ/mol. The energy required for the given process will be:}$ $(i) \text{ C(graphite)} \rightarrow \text{C(gas)}$ $(ii) \text{ C(diamond)} \rightarrow \text{C(gas)}$ 2 206 Recommended Questions $725, 727$, $727, 725$... 3 Edit Delete
8321 $\text{What is the value of } \Delta\text{H for the reaction } 2\text{Al} + \text{Cr}_2\text{O}_3 \rightarrow 2\text{Cr} + \text{Al}_2\text{O}_3\text{, knowing that the enthalpies of}$ $\text{formation of Al}_2\text{O}_3 \text{ and Cr}_2\text{O}_3 \text{ are } -1596 \text{ kJ and } -1134 \text{ kJ, respectively?}$ 2 206 Recommended Questions $-1365 \text{ kJ}$, $2730 \text{ kJ}$... 4 Edit Delete
8320 $\text{The enthalpy of formation of CO}_2\text{(g), H}_2\text{O(l) and propene (g) are } -393.5\text{, } -285.8\text{, and } 20.42 \text{ kJ mol}^{-1} \text{ respectively. The enthalpy change for the combustion of cyclopropane at 298 K will be:}$ $(\text{The enthalpy of isomerization of cyclopropane to propene is } -33.0 \text{ kJ mol}^{-1}\text{. })$ 2 206 Recommended Questions $-1021.32 \text{ kJ mol}^{-1}$, $-2091.32 \text{ kJ mol}^{-1}$... 2 Edit Delete
8319 $\text{The standard heat of combustion of propane is } -2220.1 \text{ kJ mol}^{-1}\text{. The standard heat of vaporisation of liquid water is } 44.0 \text{ kJ mol}^{-1}\text{. The enthalpy change for the reaction is−}$ $\text{C}_3\text{H}_8 \text{ (g)} + 5\text{O}_2 \text{ (g)} \rightarrow 3\text{CO}_2 \text{ (g)} + 4\text{H}_2\text{O(g)}$ 2 206 Recommended Questions $-2220.1 \text{ kJ}$, $-2044.1 \text{ kJ}$... 2 Edit Delete
8318 $\text{The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound is-}$ 2 206 Recommended Questions $\text{Generally negative}$, $\text{Always positive}$... 1 Edit Delete
8317 $\text{At standard conditions, if the change in the enthalpy for the following reaction is } -109 \text{ kJ mol}^{-1}$ $\text{H}_{2(g)}+\text{Br}_{2(g)}\rightarrow 2\text{HBr}_{(g)} \text{ and the bond energy of H}_2 \text{ and Br}_2 \text{ is } 435 \text{ kJ mol}^{-1} \text{ and } 192 \text{ kJ mol}^{-1} \text{ respectively, what is the bond energy (in kJ mol}^{-1}\text{) of HBr?}$ 2 206 Recommended Questions $368$, $736$... 1 Edit Delete
8316 $\text{Select the correct option based on statements below:}$ $\text{Assertion (A): Combustion is an exothermic process.}$ $\text{Reason (R): Combustion is a spontaneous process.}$ 2 206 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8315 $\text{The bond energy of H}−\text{H and Cl-Cl is } 430 \text{ kJ mol}^{-1} \text{ and } 240 \text{ kJ mol}^{-1} \text{ respectively}$ $\text{and } \Delta H_f \text{ for HCl is } -90 \text{ kJ mol}^{-1}\text{. The bond enthalpy of HCl is:}$ 2 206 Recommended Questions $290 \text{ kJ mol}^{-1}$, $380 \text{ kJ mol}^{-1}$... 3 Edit Delete
8314 $\text{Determine the enthalpy of formation for } \text{H}_2\text{O}_2\text{(l), using the following enthalpies of reaction:}$ $\text{N}_2\text{H}_4\text{(l)}+2\text{H}_2\text{O}_2\text{(l)}\rightarrow \text{N}_2\text{(g)}+4\text{H}_2\text{O}\text{(l)}; \Delta \text{H}_1^0 = -818 \text{ kJ/mol}$ $\text{N}_2\text{H}_4\text{(l)}+\text{O}_2\text{(g)}\rightarrow \text{N}_2\text{(g)}+2\text{H}_2\text{O}\text{(l)}; \Delta \text{H}_2^0 = -622 \text{ kJ/mol}$ $\text{H}_2\text{(g)}+\frac{1}{2}\text{O}_2\text{(g)}\rightarrow \text{H}_2\text{O}\text{(l)}; \Delta \text{H}_3^0 = -285 \text{ kJ/mol}$ 2 206 Recommended Questions $-383 \text{ kJ/mol}$, $-187 \text{ kJ/mol}$... 2 Edit Delete
8313 $\text{The standard enthalpy of the formation of CH}_3\text{OH}_{(l)} \text{ from the following data is:}$ $\text{CH}_3\text{OH}_{(l)} + \frac{3}{2}\text{O}_{2(g)} \rightarrow \text{CO}_{2(g)} + 2\text{H}_2\text{O}_{(l)}; \Delta_r\text{H}^{\circ} = -726 \text{ kJ mol}^{-1}$ $\text{C(s)} + \text{O}_{2(g)} \rightarrow \text{CO}_{2(g)}; \Delta_c\text{H}^{\circ} = -393 \text{ kJ mol}^{-1}$ $\text{H}_{2(g)} + \frac{1}{2}\text{O}_{2(g)} \rightarrow \text{H}_2\text{O}_{(l)}; \Delta_f\text{H}^{\circ} = -286 \text{ kJ mol}^{-1}$ 2 206 Recommended Questions $-239 \text{ kJ mol}^{-1}$, $+239 \text{ kJ mol}^{-1}$... 1 Edit Delete
8312 $\text{The enthalpy of combustion of methane, graphite, and dihydrogen at 298 K are, } -890.3 \text{ kJ mol}^{-1}\text{, } -393.5 \text{ kJ mol}^{-1}\text{, and } -285.8 \text{ kJ mol}^{-1} \text{ respectively. The enthalpy of formation of CH}_4\text{(g) is-}$ 2 206 Recommended Questions $-74.8 \text{ kJ mol}^{-1}$, $-52.27 \text{ kJ mol}^{-1}$... 1 Edit Delete
8311 $\Delta_{\text{vap}}\text{H}^{\circ} (\text{CCl}_4) = 30.5 \text{ kJ mol}^{-1}$ $\Delta_f\text{H}^{\circ} (\text{CCl}_4) = -135.5 \text{ kJ mol}^{-1}$ $\Delta_a\text{H}^{\circ} (\text{C}) = 715.0 \text{ kJ mol}^{-1}$ $\Delta_a\text{H}^{\circ} (\text{Cl}_2) = 242 \text{ kJ mol}^{-1}$ $\text{The enthalpy change for the reaction}$ $\text{CCl}_4 \text{ (g)} \rightarrow \text{C(g)} + 4 \text{ Cl (g) would be:}$ 2 206 Recommended Questions $326 \text{ kJ mol}^{-1}$, $1304 \text{ kJ mol}^{-1}$... 2 Edit Delete
8310 $\text{When 4 g of iron is burnt to ferric oxide at a constant pressure, 29.28 kJ of heat is evolved.}$ $\text{The enthalpy of formation of ferric oxide will be-}$ $\text{(At. mass of Fe = 56) ?}$ 2 206 Recommended Questions $-81.98 \text{ kJ}$, $-819.8 \text{ kJ}$... 2 Edit Delete
8309 $\text{Which of the following is not an endothermic reaction?}$ 2 206 Recommended Questions $\text{Combustion of methane}$, $\text{Decomposition of water}$... 1 Edit Delete
8308 $\text{The enthalpy of combustion of carbon to CO}_2 \text{ is } -393.5 \text{ kJ mol}^{-1}\text{. The amount of heat released upon formation of } 35.2 \text{ g of CO}_2 \text{ from carbon and dioxygen gas would be:}$ 2 206 Recommended Questions $-393.5 \text{ kJ mol}^{-1}$, $-314.8 \text{ kJ mol}^{-1}$... 2 Edit Delete
8307 $\text{The enthalpy of formation of CO}_{(g)}\text{, CO}_{2(g)}\text{, N}_2\text{O}_{(g)}\text{, and N}_2\text{O}_{4(g)}\text{ are } -110\text{ kJ mol}^{-1}\text{, } -393\text{ kJ mol}^{-1}\text{, } 81\text{ kJ mol}^{-1}\text{, and } 9.7\text{ kJ mol}^{-1}\text{ respectively.}$ $\text{The value of } (\Delta)_r H \text{ for the reaction would be:}$ $\text{N}_2\text{O}_{4(g)} + 3\text{(CO)}_{(g)} \rightarrow \text{N}_2\text{O}_{(g)} + 3\text{(CO)}_{2(g)}$ 2 206 Recommended Questions $-777.7\text{ kJ mol}^{-1}$, $+777.7\text{ kJ mol}^{-1}$... 1 Edit Delete
8306 $\text{Select the correct option based on statements given below:}$ $\text{Assertion (A): Combustion of all organic compounds is an exothermic reaction.}$ $\text{Reason (R): The enthalpies of all elements in their standard state are zero.}$ 2 206 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8305 $\Delta\text{H}^0_\text{f} (298\text{K}) \text{ of methanol is given by the chemical equation:}$ 2 206 Recommended Questions $\text{C(diamond)} + \frac{1}{2}\text{O}_{2(g)} + 2\text{H}_{2(g)} \rightarrow \text{CH}_3\text{OH}_{(l)}$, $\text{CH}_{4(g)} + \frac{1}{2}\text{O}_{2(g)} \rightarrow \text{CH}_3\text{OH}_{(g)}$... 4 Edit Delete
8304 $\text{Consider the following reaction,}$ $\text{S} + \text{O}_2 \rightarrow \text{SO}_2, \Delta\text{H} = - 298.2 \text{ kJ mol}^{-1}$ $\text{SO}_2 + 1/2 \text{ O}_2 \rightarrow \text{SO}_3, \Delta\text{H} = - 98.7\text{ kJ mol}^{-1}$ $\text{SO}_3 + \text{H}_2\text{O} \rightarrow \text{H}_2\text{SO}_4, \Delta\text{H} = - 130.2 \text{ kJ mol}^{-1}$ $\text{H}_2 + 1/2 \text{ O}_2 \rightarrow \text{H}_2\text{O}, \Delta\text{H} = - 287.3 \text{ kJ mol}^{-1}$ $\text{the enthalpy of formation of H}_2\text{SO}_4 \text{ at 298 K will be}−$ 2 206 Recommended Questions $− 814.4 \text{ kJ mol}^{-1}$, $+ 814.4 \text{ kJ mol}^{-1}$... 1 Edit Delete
8303 \text{From the following bond energies:} \text{H-H bond energy: } 431.37 \text{ kJ mol}^{-1} \text{C=C bond energy: } 606.10 \text{ kJ mol}^{-1} \text{C-C bond energy: } 336.49 \text{ kJ mol}^{-1} \text{C-H bond energy: } 410.50 \text{ kJ mol}^{-1} \text{Enthalpy for the reaction:} \text{C}_2\text{H}_4 + \text{H}_2 \rightarrow \text{C}_2\text{H}_6 \text{will be:} 2 206 Recommended Questions $1523.6\text{ kJ mol}^{-1}$, $-243.6\text{ kJ mol}^{-1}$... 3 Edit Delete
8302 $\text{N}_2 + 3 \text{ H}_2 \rightarrow 2\text{NH}_3; \quad \Delta_\text{r} \text{H}^{\circ} = -92.4 \text{ kJ mol}^{-1}. \text{ The standard enthalpy of formation of NH}_3 \text{ gas in the above reaction would be:}$ 2 206 Recommended Questions $-92.4 \text{ J (mol)}^{-1}$, $-46.2 \text{ kJ (mol)}^{-1}$... 2 Edit Delete
8301 $\text{The enthalpy of sublimation of a substance is equal to:}$ 2 206 Recommended Questions $\text{Enthalpy of fusion} + \text{Enthalpy of vaporization}$, $\text{Enthalpy of fusion}$... 1 Edit Delete
8300 $\text{The standard enthalpy of combustion at }25^{\circ}C\text{ of hydrogen, cyclohexene }(\text{C}_6\text{H}_{10}),\text{ and cyclohexane }(\text{C}_6\text{H}_{12})\text{ are }-241, -3800\text{ and }-3920\text{ kJ mol}^{-1},\text{ respectively. Calculate the standard enthalpy of hydrogenation of cyclohexene.}$ 2 206 Recommended Questions $-131\text{ kJ mol}^{-1}$, $-155\text{ kJ mol}^{-1}$... 4 Edit Delete
8299 $\text{An ideal gas is expanded irreversibly against 10 bar pressure from 20 litres to 30 litres. Calculate 'w' if the process is isenthalpic.}$ 2 206 Recommended Questions $0$, $+100\text{ J}$... 4 Edit Delete
8298 $\text{When 1 g H}_2 \text{ gas at S.T.P is expanded to twice its initial volume, then the work done is:}$ 2 206 Recommended Questions $22.4 \text{ L atm}$, $5.6 \text{ L atm}$... 3 Edit Delete
8297 $\text{Consider the following graph.}$ $[\text{P-V diagram showing expansion from volume } V_i \text{ to } V_f \text{ with decreasing pressure curve}]$ $\text{The work done shown by the above-mentioned graph is-}$ 2 206 Recommended Questions $\text{Positive}$, $\text{Negative}$... 2 Edit Delete
8296 $\text{To calculate the amount of work done in joules during reversible isothermal expansion of an ideal gas, the volume must be expressed in:}$ 2 206 Recommended Questions $\text{m}^3 \text{ only}$, $\text{dm}^3 \text{ only}$... 4 Edit Delete
8295 $\text{Which of the following is correct for isothermal expansion of an ideal gas:}$ 2 206 Recommended Questions $W_{\text{rev}} = W_{\text{irr}}$, $W_{\text{rev}} + W_{\text{irr}} = 0$... 3 Edit Delete
8294 $\text{For the graph given below, it can be concluded that work done during the process shown will be-}$ $[\text{P-V diagram showing compression process from volume } V_i \text{ to } V_f \text{ with a stepped decrease in pressure}]$ 2 206 Recommended Questions $\text{Zero}$, $\text{Negative}$... 3 Edit Delete
8293 $\text{The pressure-volume work for an ideal gas can be calculated by using the expression } W = \int_{V_i}^{V_f} P_{\text{ex}} \text{ d}V\text{.}$ $\text{The work can also be calculated from the pV-plot by using the area under the curve within the specified limits.}$ $\text{An ideal gas is compressed (a) reversibly or (b) irreversibly from volume } V_i \text{ to } V_f\text{.}$ $\text{The correct option is:}$ 2 206 Recommended Questions $W \text{ (reversible)} = W \text{ (irreversible)}$, $W \text{ (reversible)} < W \text{ (irreversible)}$... 2 Edit Delete
8292 $\text{The work done in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 liters to 20 liters at } 25^{\circ}\text{C is -}$ 2 206 Recommended Questions $-2.303 \times 298 \times 0.082 \log 2$, $-298 \times 10^7 \times 8.31 \times 2.303 \log 2$... 2 Edit Delete
8291 $\text{An ideal gas expands isothermally from } 10^{-3}m^3 \text{ to } 10^{-2} m^3 \text{ at 300 K against a constant pressure of } 10^5 \text{ Nm}^{-2}\text{. The work done by the gas is:}$ 2 206 Recommended Questions $+270 \text{ kJ}$, $-900 \text{ J}$... 2 Edit Delete
8290 $\text{Select the correct option based on statements below:}$ $\begin{array}{|l|l|} \hline \text{Assertion (A):} & \text{Work done in an irreversible isothermal process at constant volume is zero.} \\ \hline \text{Reason (R):} & \text{Work is assigned a negative sign during expansion and is assigned a positive sign during compression.} \\ \hline \end{array}$ 2 206 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8289 $\text{701 J of heat is absorbed by a system and 394 J of work is done by the system. The change in internal energy for the process is:}$ 2 206 Recommended Questions $307 \text{ J}$, $-307 \text{ J}$... 1 Edit Delete
8288 $\text{A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of } 37.0^{\circ}\text{C. As it does so, it absorbs 208 J of heat. The values of q and w for the process will be-}$ $(\text{R} = 8.314 \text{ J/mol K}) (\ln 7.5 = 2.01)$ 2 206 Recommended Questions $\text{q} = +208 \text{ J}, \text{w} = -208 \text{ J}$, $\text{q} = -208 \text{ J}, \text{w} = -208 \text{ J}$... 1 Edit Delete
8287 $\text{Select the correct option based on statements below:}$ $\begin{array}{|l|l|} \hline \text{Statement I:} & \text{Total enthalpy change of a multistep process is the sum of } \Delta H_1 + \Delta H_2 + \Delta H_3 + \ldots \\ \hline \text{Statement II:} & \text{When heat is absorbed by the system, the sign of q is taken to be negative.} \\ \hline \end{array}$ 2 206 Recommended Questions $\text{Statement I is correct; Statement II is correct.}$, $\text{Statement I is correct; Statement II is incorrect.}$... 2 Edit Delete
8286 $\text{Two moles of an ideal gas is heated at a constant pressure of one atmosphere from } 27^{\circ} \text{C to } 127^{\circ} \text{C. If } C_{v, m} = 20 + 10^{-2} \text{ T JK}^{-1} \text{ mol}^{-1}\text{, then q and } \Delta \text{ U for the process are respectively:}$ 2 206 Recommended Questions $6362.8 \text{ J}, 4700 \text{ J}$, $3037.2 \text{ J}, 4700 \text{ J}$... 1 Edit Delete
8285 $\text{The factor } \left(\frac{\partial Q}{\partial T}\right)_P - \left(\frac{\partial Q}{\partial T}\right)_V \text{ is equal to:}$ 2 206 Recommended Questions $\gamma$, $\text{R}$... 2 Edit Delete
8284 $\text{Based on the reactions, ascertain the valid algebraic relationship:}$ $(i) \text{ C}(g) + 4\text{H}(g) \rightarrow \text{CH}_4(g);$ $\Delta H_r = x \text{ kJ mol}^{-1}$ $(ii) \text{ C(graphite)} + 2\text{H}_2(g) \rightarrow \text{CH}_4;$ $\Delta H_r = y \text{ kJ mol}^{-1}$ 2 206 Recommended Questions $x = y$, $x = 2y$... 3 Edit Delete
8283 $\text{2.1 g of Fe combines with S evolving 3.77 kJ. The heat of formation of FeS in kJ/mole is-}$ 2 206 Recommended Questions $- 3.77$, $- 1.79$... 3 Edit Delete
8282 $\text{The lattice energy of NaCl is 780 kJ mol}^{-1}\text{. The enthalpy of hydration of Na}^{+}\text{(g) and Cl}^{-}\text{(g) ions are -406 kJ mol}^{-1} \text{ and -364 kJ mol}^{-1}\text{. The enthalpy of the solution of NaCl(s) is-}$ 2 206 Recommended Questions $\text{23 kJ mol}^{-1}$, $\text{10 kJ mol}^{-1}$... 2 Edit Delete
8281 $\text{The standard enthalpy of vaporisation } \Delta_{\text{vap}}H^{\circ} \text{ for water at } 100^{\circ} \text{C is } 40.66 \text{ kJ mol}^{-1}\text{. The internal energy of vaporisation of water at } 100^{\circ} \text{C (in kJ mol}^{-1}\text{) is-}$ $\text{(Assume water vapour to behave like an ideal gas)}$ 2 206 Recommended Questions $+37.56$, $-43.76$... 1 Edit Delete
8280 $\text{The difference in } \Delta H \text{ and } \Delta U \text{ for combustion of benzoic acid at 300 K is equal to-}$ 2 206 Recommended Questions $-1.247 \text{ kJ}$, $+1.247 \text{ kJ}$... 1 Edit Delete
8279 $\text{Select the correct option based on statements below:}$ $\begin{array}{|l|l|} \hline \text{Assertion (A):} & \text{C}_{\text{diamond}} \rightarrow \text{C}_{\text{graphite}} \text{ } \Delta H \text{ and } \Delta U \text{ are the same for this reaction.} \\ \hline \text{Reason (R):} & \text{Entropy increases during the conversion of diamond to graphite.} \\ \hline \end{array}$ 2 206 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 2 Edit Delete
8278 $\Delta U^{\circ} \text{ for combustion of methane is } -x \text{ kJ mol}^{-1}. \text{ The value of } \Delta H^{\circ} \text{ for the same reaction would be:}$ 2 206 Recommended Questions $= \Delta U^{\circ}$, $> \Delta U^{\circ}$... 3 Edit Delete
8277 $\text{An ideal gas absorbs 2000 cal of heat from a heat reservoir and does mechanical work equivalent to 4200 J. The change in internal energy of the gas is:}$ 2 206 Recommended Questions $\text{3000 cal}$, $\text{2000 cal}$... 4 Edit Delete
8276 $\Delta_f\text{U}^\circ \text{ of formation of } \text{CH}_4\text{(g) at certain temperature is } -393 \text{ kJ mol}^{-1}\text{. The value of } \Delta_f\text{H}^\circ \text{ is-}$ 2 206 Recommended Questions $\text{Zero}$, $< \Delta_f\text{U}^\circ$... 2 Edit Delete
8275 $\text{For the reaction, } 2\text{N}_2\text{(g)}+\text{O}_2\text{(g)}\rightarrow 2\text{N}_2\text{O(g)}, \text{ at 298K } \Delta\text{H} \text{ is } 164 \text{ kJ mol}^{-1}. \text{ The } \Delta\text{E} \text{ of the reaction is-}$ 2 206 Recommended Questions $166.5 \text{ kJ mol}^{-1}$, $141.5 \text{ kJ mol}^{-1}$... 1 Edit Delete
8274 $\text{Determine the enthalpy change for the specified reaction:}$ $2\text{H}_2\text{O}_2(l) \rightarrow 2\text{H}_2\text{O}(l) + \text{O}_2(g).$ $(\text{Given the heat of formation of H}_2\text{O}_2(l) \text{ and H}_2\text{O}(l) \text{ are } -188 \text{ and } -286 \text{ kJ/mol respectively})$ 2 206 Recommended Questions $-196 \text{ kJ/mol}$, $+196 \text{ kJ/mol}$... 1 Edit Delete
8273 $\text{The } \Delta\text{H for vaporization of a liquid is 20 kJ/mol. Assuming ideal behaviour, the change in internal energy for the vaporization of 1 mol of the liquid at } 60^{\circ}\text{C and 1 bar is close to:}$ 2 206 Recommended Questions $13.2 \text{ kJ/mol}$, $17.2 \text{ kJ/mol}$... 2 Edit Delete
8272 $\text{The reaction of cyanamide, NH}_2 \text{CN (s) with dioxygen, was carried out in a bomb calorimeter, and } \Delta\text{U was found to be } -742.7 \text{ kJ mol}^{-1} \text{ at 298 K.}$ $\text{NH}_2\text{CN(s)} + \frac{3}{2}\text{O}_2\text{(g)} \rightarrow \text{N}_2\text{(g)} + \text{CO}_2\text{(g)} + \text{H}_2\text{O(l)}$ $\text{The enthalpy change for the reaction at 298 K would be:}$ 2 206 Recommended Questions $-741.3 \text{ kJ mol}^{-1}$, $+ 753.9 \text{ kJ mol}^{-1}$... 1 Edit Delete
8271 \frac{1}{2}\text{N}_2\text{(g)} + \frac{1}{2}\text{O}_2\text{(g)} \rightarrow \text{NO(g)}; \quad \Delta_r\text{H}^{\circ} = 90 \text{ kJ mol}^{-1} \text{NO(g)} + \frac{1}{2}\text{O}_2\text{(g)} \rightarrow \text{NO}_2\text{(g)}; \quad \Delta_r\text{H}^{\circ} = -74 \text{ kJ mol}^{-1} \text{The thermodynamic stability of NO(g) based on the above data is:} 2 206 Recommended Questions $\text{Less than NO}_2\text{(g)}$, $\text{More than NO}_2\text{(g)}$... 1 Edit Delete
8270 $\text{Given the following reaction:}$ $4\text{H}(g) \rightarrow 2\text{H}_2(g)$ $\text{The enthalpy change for the reaction is -869.6 kJ. The dissociation energy of the H-H bond is:}$ 2 206 Recommended Questions $-869.6 \text{ kJ}$, $+434.8 \text{ kJ}$... 2 Edit Delete
8269 \text{Consider the following diagram for a reaction A } \rightarrow \text{ C.} \text{[Energy diagram showing reactant A at a lower enthalpy level (}H_r\text{) and product C at a higher enthalpy level (}H_p\text{), with an arrow pointing upward from A to C along the reaction coordinate axis]} \text{The nature of the reaction is-} 2 206 Recommended Questions $\text{Exothermic}$, $\text{Endothermic}$... 2 Edit Delete
8268 $\text{For the given reaction}$ $2\text{H}_2\text{O}_2(l) \rightarrow 2\text{H}_2\text{O}(l) + \text{O}_2(g), \text{ the heat of formations of H}_2\text{O}_2(l) \text{ and H}_2\text{O (l) are -188 kJ/mol \& -286 kJ/mol respectively. The change in the enthalpy of the reaction will be:}$ 2 206 Recommended Questions $- 196 \text{ kJ/mol}$, $+ 196 \text{ kJ/mol}$... 1 Edit Delete
8267 $\text{As an isolated box, equally partitioned, contains two ideal gasses A and B as shown:}$ $\text{[Box diagram showing two compartments: left compartment contains gas A at 1 atm, 25°C, right compartment contains gas B at 1 atm, 25°C]}$ $\text{When the partition is removed, the gases mix. The changes in enthalpy (}\Delta\text{H) and entropy (}\Delta\text{S) in the process, respectively, are}$ 2 206 Recommended Questions $\text{Zero, positive}$, $\text{Zero, negative}$... 1 Edit Delete
8266 \text{Consider the following diagram for a reaction A} \rightarrow \text{C:} \text{[Energy diagram showing reactant A at a higher enthalpy level (}H_r\text{) and product C at a lower enthalpy level (}H_p\text{), with an arrow pointing downward from A to C along the reaction coordinate axis]} \text{The nature of the reaction is-} 2 206 Recommended Questions $\text{Exothermic}$, $\text{Endothermic}$... 1 Edit Delete
8265 $\text{Which plot represents an exothermic reaction?}$ 2 206 Recommended Questions $\text{A graph with enthalpy (H) on y-axis and time on x-axis, showing a downward arrow from point R (reactants) at higher enthalpy to point P (products) at lower enthalpy.}$, $\text{A graph with enthalpy (H) on y-axis and time on x-axis, showing an upward arrow from point R (reactants) at lower enthalpy to point P (products) at higher enthalpy.}$... 1 Edit Delete
8264 $\text{During the complete combustion of one mole of butane, 2658 kJ of heat is released. The thermochemical reaction for this change is:}$ 2 206 Recommended Questions 2\text{C}_4\text{H}_{10}\text{(g)} + 13\text{O}_2\text{(g)} \rightarrow 8\text{CO}_2\text{(g)} + 10\text{H}_2\text{O}\text{(l)}; \quad \Delta_c\text{H} = -2658.0 \text{ kJ mol}^{-1}, \text{C}_4\text{H}_{10}\text{(g)} + \frac{13}{2}\text{O}_2\text{(g)} \rightarrow 4\text{CO}_2\text{(g)} + 5\text{H}_2\text{O}\text{(l)}; \quad \Delta_c\text{H} = -1329.0 \text{ kJ mol}^{-1}... 3 Edit Delete
8263 $\text{The bond energies of C} \equiv \text{C, C-H, H-H, and C=C are 198, 98, 103 and 145 kcal respectively.}$ $\text{The enthalpy change of the reaction HC} \equiv \text{CH + H}_2 \rightarrow \text{C}_2\text{H}_4 \text{ would be-}$ 2 206 Recommended Questions $48 \text{ kcal}$, $96 \text{ kcal}$... 3 Edit Delete
8262 \text{Select the correct option based on statements below:} \text{Assertion (A): }\Delta H\text{ is positive for endothermic reactions.} \text{Reason (R): If the total enthalpy of reactants and products are }H_r\text{ and }H_p\text{ respectively, then for an endothermic reaction }H_r < H_p\text{.} 2 206 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
8261 $\text{For the following given equations and } \Delta\text{H}^{\circ} \text{ values, determine the enthalpy of reaction at 298 K for the reaction:}$ $\text{C}_2\text{H}_4(g) + 6\text{F}_2(g) \rightarrow 2\text{CF}_4(g) + 4\text{HF}(g)$ $\text{H}_2(g) + \text{F}_2(g) \rightarrow 2\text{HF}(g) \quad \Delta\text{H}^{\circ}_1 = -537 \text{ kJ}$ $\text{C}(s) + 2\text{F}_2(g) \rightarrow \text{CF}_4(g) \quad \Delta\text{H}^{\circ}_2 = -680 \text{ kJ}$ $2\text{C}(s) + 2\text{H}_2(g) \rightarrow \text{C}_2\text{H}_4(g) \quad \Delta\text{H}^{\circ}_3 = 52 \text{ kJ}$ 2 206 Recommended Questions $-1165 \text{ kJ}$, $-2486 \text{ kJ}$... 2 Edit Delete
8260 \text{For the reaction:} \text{C}_3\text{H}_8(g) + 5\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 4\text{H}_2\text{O}(l) \text{ at constant temperature, }\Delta\text{H} - \Delta\text{E} \text{ is:} 2 206 Recommended Questions $+ \text{RT}$, $- 3\text{RT}$... 2 Edit Delete
8259 $\text{Combustion of glucose takes place according to the equation,}\n\n\text{C}_6\text{H}_{12}\text{O}_6 + 6\text{O}_2 \rightarrow 6\text{CO}_2 + 6\text{H}_2\text{O}, \Delta H = -72 \text{ K cal}\n\n\text{Energy required for the production of 1.6 g of glucose is -}\n\n\text{(Molecular mass of glucose = 180 g)}$ 2 206 Recommended Questions $0.064 \text{ kcal}$, $0.64 \text{ kcal}$... 2 Edit Delete
8258 $\text{Assume each reaction is carried out in an open container. For which of the following reactions will } \Delta H \text{ be equal to } \Delta U?$ 2 206 Recommended Questions $\text{PCl}_5(\text{g}) \rightarrow \text{PCl}_3(\text{g}) + \text{Cl}_2(\text{g})$, $2\text{CO}(\text{g}) + \text{O}_2(\text{g}) \rightarrow 2\text{CO}_2(\text{g})$... 3 Edit Delete
8257 $\text{For an isolated system with } \Delta U = 0, \text{ the } \Delta S \text{ value will be:}$ 2 206 Recommended Questions $\text{Positive}$, $\text{Negative}$... 1 Edit Delete
8256 $\text{Pairs correctly represent intensive property among the following is:}$ 2 206 Recommended Questions $\text{Entropy, Gibb's energy}$, $\text{Enthalpy, Heat capacity}$... 3 Edit Delete
8255 \text{Select the correct option based on the statements given below:} \textbf{Statement I.} \text{ Specific heat is an intensive property.} \textbf{Statement II.} \text{ Heat capacity is an extensive property.} 2 206 Recommended Questions $\text{Statement I is correct; Statement II is correct.}$, $\text{Statement I is correct; Statement II is incorrect.}$... 1 Edit Delete
8254 $\text{Plants and living beings are examples of:}$ 2 206 Recommended Questions $\text{Isolated system}$, $\text{Adiabatic system}$... 3 Edit Delete
8253 $\text{Which among the following state functions is an extensive property of the system?}$ 2 206 Recommended Questions $\text{Temperature}$, $\text{Volume}$... 2 Edit Delete
8252 $\text{If the volume of a gas is reduced to half from its original volume, then the specific heat will:}$ 2 206 Recommended Questions $\text{Reduce to half}$, $\text{Be Doubled}$... 3 Edit Delete
8251 $\text{Which of the following is not a state function?}$ 2 206 Recommended Questions $\Delta S$, $\Delta G$... 4 Edit Delete
8250 $\text{When a gas undergoes adiabatic expansion, it gets cooled due to -}$ 2 206 Recommended Questions $\text{Loss of energy}$, $\text{Fall in pressure}$... 1 Edit Delete
8249 $\text{Work done is maximum in -}$ 2 206 Recommended Questions $\text{Isobaric work}$, $\text{Isothermal work}$... 1 Edit Delete
8248 $\text{A Beckmann thermometer is used to measure -}$ 2 206 Recommended Questions $\text{High temperature}$, $\text{Low temperature}$... 2 Edit Delete
8247 $\text{The correct statement among the following is:}$ 2 206 Recommended Questions $\text{The presence of reacting species in a covered beaker is an example of an open system.}$, $\text{There is an exchange of energy as well as matter between the system and the surroundings in a closed system.}$... 3 Edit Delete
8246 $\text{The amount of heat needed to raise the temperature of } 60.0 \, \text{g of aluminium from } 35°\text{C to } 55°\text{C would be:}$\n\n$(\text{Molar heat capacity of Al is } 24 \, \text{J mol}^{-1} \text{K}^{-1})$ 2 206 Recommended Questions $1.07 \, \text{J}$, $1.07 \, \text{kJ}$... 2 Edit Delete
8245 $\text{In an adiabatic process, no transfer of heat takes place between the system and its surroundings. The correct option for free expansion of an ideal gas under adiabatic condition from the following is:}$ 2 206 Recommended Questions $q = 0, \, \Delta T \neq 0, \, W = 0$, $q \neq 0, \, \Delta T = 0, \, W = 0$... 3 Edit Delete
8244 $\text{Thermodynamics is not concerned about:}$ 2 206 Recommended Questions $\text{Energy changes involved in a chemical reaction.}$, $\text{The extent to which a chemical reaction proceeds.}$... 2 Edit Delete
8243 $\text{The enthalpy of formation of all elements in their standard state is-}$ 2 206 Recommended Questions $\text{Unity}$, $\text{Zero}$... 2 Edit Delete
8242 $\text{Identify the false statement among the following.}$ 2 206 Recommended Questions $\text{Temperature is a state function.}$, $\text{Work is a state function.}$... 2 Edit Delete
8241 $\text{Which, among the following, is not a state function?}$ 2 206 Recommended Questions $\text{Internal energy}$, $\text{Free energy}$... 3 Edit Delete
8240 $\text{What is a necessary condition for an adiabatic process to occur?}$ 2 206 Recommended Questions $\Delta T = 0$, $\Delta P = 0$... 3 Edit Delete
8239 $\text{Dipole-dipole forces act between the molecules possessing permanent dipole. Ends of dipoles possess 'partial charges'. The partial charge will be-}$ 2 205 Recommended Questions $\text{More than unit electronic charge.}$, $\text{Equal to unit electronic charge.}$... 3 Edit Delete
8238 $\text{The rate of diffusion of methane at a given temperature is twice that of a gas X. The molecular weight of X is}$ 2 205 Recommended Questions $64.0$, $32.0$... 1 Edit Delete
8237 $\text{In which case is the rate of diffusion highest if all are present in the same container at the same temperature:}$ 2 205 Recommended Questions $4 \text{ g H}_2$, $32 \text{ g O}_2$... 1 Edit Delete
8236 $\text{Density ratio of O}_2 \text{ and H}_2 \text{ is 16 : 1. The ratio of their r.m.s. velocities will be-}$ 2 205 Recommended Questions $4 : 1$, $1 : 16$... 3 Edit Delete
8235 $20 \text{ L of SO}_2 \text{ diffuses through a porous partition in 60s. The volume of O}_2 \text{ that will diffuse under similar condition in 30s will be:-}$ 2 205 Recommended Questions $12.14 \text{ L}$, $14.14 \text{ L}$... 2 Edit Delete
8234 $\text{The temperature at which the r.m.s velocity of carbon dioxide becomes the same as that of nitrogen at }21^0\text{C is-}$ 2 205 Recommended Questions $462 ^{\circ}\text{C}$, $273 \text{ K}$... 3 Edit Delete
8233 $\text{At }27^{\circ} \text{ C, the ratio of root mean square speeds of ozone to oxygen is-}$ 2 205 Recommended Questions $\sqrt{(3/5)}$, $\sqrt{(4/3)}$... 3 Edit Delete
8232 $\text{At room temperature, the average speed of Helium is higher than that of Oxygen by a factor of - }$ 2 205 Recommended Questions $2\sqrt{2}$, $6/ \sqrt{2}$... 1 Edit Delete
8231 $\text{The gas among the following that can be most steadily liquefied is - }$ 2 205 Recommended Questions $\text{NH}_3$, $\text{Cl}_2$... 3 Edit Delete
8230 $\text{Choose the correct statement for viscosity } (\eta) \text{ variation with T and P for an ideal gas-}$ 2 205 Recommended Questions $\eta \text{ of a gas increases with increase in temperature (T), but it is independent of pressure}$, $\eta \text{ of a gas decreases with increase in T and increases with increase in P}$... 1 Edit Delete
8229 $\text{The correct order of temperature of a real gas is-}$ $\text{I. Boyle's temperature}$ $\text{II. Critical temperature}$ $\text{III. Inversion temperature}$ 2 205 Recommended Questions $\text{III} > \text{I} > \text{II}$, $\text{I} > \text{II} > \text{III}$... 1 Edit Delete
8228 $\text{A gas cannot be liquefied if:}$ 2 205 Recommended Questions $\text{Forces of attraction are low under ordinary conditions}$, $\text{Forces of attraction are high under ordinary conditions}$... 3 Edit Delete
8227 $\text{The correct statement regarding the van der Waal constant of } \text{N}_2 \text{ \& } \text{NH}_3 \text{ is -}$ 2 205 Recommended Questions $a_{\text{NH}_3} > a_{\text{N}_2}, b_{\text{NH}_3} < b_{\text{N}_2}$, $a_{\text{NH}_3} < a_{\text{N}_2}, b_{\text{NH}_3} < b_{\text{N}_2}$... 1 Edit Delete
8226 $\text{Maximum deviation from ideal gas is shown by-}$ 2 205 Recommended Questions $\text{H}_2\text{(g)}$, $\text{N}_2\text{(g)}$... 4 Edit Delete
8225 $\text{As per Charles's law, } -273^\circ\text{C} \text{ is the lowest possible temperature because:}$ 2 205 Recommended Questions $\text{All gases get liquefied before reaching a temperature of } -273^\circ\text{C}.$, $\text{All gases get liquefied after reaching a temperature of } -273^\circ\text{C}.$... 1 Edit Delete
8224 \text{Atmospheric pressure recorded in different cities:} \text{Shimla: } 1.01 \times 10^5 \text{ N/m}^2 \text{Bangalore: } 1.2 \times 10^5 \text{ N/m}^2 \text{Delhi: } 1.02 \times 10^5 \text{ N/m}^2 \text{Mumbai: } 1.21 \times 10^5 \text{ N/m}^2 \text{The liquid will boil first at -} 2 205 Recommended Questions $\text{Shimla}$, $\text{Bangalore}$... 1 Edit Delete
8223 $\text{The SI unit of viscosity coefficient } (\eta) \text{ is-}$ 2 205 Recommended Questions $\text{Pascal}$, $\text{Nsm}^{-2}$... 2 Edit Delete
8222 $\text{Among water, ether, and acetone, water has the maximum boiling point and ether has the minimum boiling point. The correct order of vapour pressure of water, acetone and ether at } 30^\circ\text{C} \text{ is-}$ 2 205 Recommended Questions $\text{Water}<\text{ether}<\text{acetone}$, $\text{Water}<\text{acetone}<\text{ether}$... 2 Edit Delete
8221 $\text{Increase in kinetic energy can overcome intermolecular forces of attraction. How will increase in temperature effect the viscosity of liquid-}$ 2 205 Recommended Questions $\text{Increase}$, $\text{No effect}$... 3 Edit Delete
8220 $\text{With increase in temperature the surface tension of a liquid will:}$ 2 205 Recommended Questions $\text{Remains same}$, $\text{Decreases}$... 2 Edit Delete
8219 \text{Gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases:} \text{H}_2\text{: 33.2 K} \text{He: 5.3 K} \text{O}_2\text{: 154.3 K} \text{N}_2\text{: 126 K} \text{From the above data, the order of liquefaction of the given gases is-} \text{(write the order from the gas liquefying first)} 2 205 Recommended Questions $\text{H}_2, \text{He}, \text{O}_2, \text{N}_2$, $\text{He}, \text{O}_2, \text{H}_2, \text{N}_2$... 4 Edit Delete
8218 $\text{The spherical shape of rain droplets is due to-}$ 2 205 Recommended Questions $\text{Viscosity}$, $\text{surface tension}$... 2 Edit Delete
8217 The density of a gaseous substance at 1 atm pressure and 773 K is 0.4 g/L. If the molecular weight of the substance is 30, the dominant force existing among gas molecules is/are- 2 205 Recommended Questions Repulsive, Attractive... 1 Edit Delete
8216 The compressibility factor for $\text{H}_2$ and He is usually- 2 205 Recommended Questions $>1$, $=1$... 1 Edit Delete
8215 The compressibility factor for 1 mol of a van der Waals gas at $0°\text{C}$ and 100 atmospheric pressure is found to be 0.5. The volume of gas is- 2 205 Recommended Questions $2.0224$ L, $1.4666$ L... 4 Edit Delete
8214 In the given figure, the curve representing an ideal gas is- 2 205 Recommended Questions B only, C and D only... 1 Edit Delete
8213 At high pressure, the compressibility factor 'Z' is equal to - 2 205 Recommended Questions Unity, $1 - \frac{Pb}{RT}$... 3 Edit Delete
8212 Consider the following graph: [Graph showing Z vs p/bar with curves X and Y] The curve that represents $\text{CO}_2$ gas is - 2 205 Recommended Questions X, Y... 2 Edit Delete
8211 The compressibility factor of a gas is less than unity at STP. The correct statement among the following is - 2 205 Recommended Questions $V_m > 22.4$ L, $V_m < 22.4$ L... 2 Edit Delete
8210 The compressibility factor of an ideal gas is: 2 205 Recommended Questions zero, infinite... 3 Edit Delete
8209 At relatively high pressure, van der Waals' equation reduces to- 2 205 Recommended Questions $PV = RT$, $PV = RT + a/v$... 3 Edit Delete
8208 The van der Waals' equation for real gas is: 2 205 Recommended Questions $(P + a/V^2)(V-b) = RT$, $(P+n^2a/V^2)(V-nb) = nRT$... 4 Edit Delete
8207 The ratio a/b (the terms used in van der Waals' equation) has the unit- 2 205 Recommended Questions $\text{atm litre mol}^{-1}$, $\text{atm dm}^3 \text{mol}^{-1}$... 4 Edit Delete
8206 At lower temperature, all gases except $\text{H}_2$ and He show: 2 205 Recommended Questions Negative deviation, Positive deviation... 1 Edit Delete
8205 Van der Waals equation at low pressure is - 2 205 Recommended Questions $PV = RT - Pb$, $PV = RT - \frac{a}{V}$... 2 Edit Delete
8204 If pressure is in atmosphere and volume in $\text{dm}^3$, then the unit of 'a' is- 2 205 Recommended Questions $\text{atm dm}^6 \text{mol}^{-2}$, $\text{atm dm}^4 \text{mol}^{-2}$... 1 Edit Delete
8203 At moderate pressure, the van der Waal's equation becomes: 2 205 Recommended Questions $PV_m = RT$, $P(V_m-b) = RT$... 3 Edit Delete
8202 For one mole of van der Waal's gas when $b=0$ and $T=300$ K, the PV vs. $1/V$ plot is shown below. The value of the van der Waal's constant 'a' ($\text{atm. litre}^2 \text{mol}^{-2}$) is- 2 205 Recommended Questions $1.0$, $4.5$... 3 Edit Delete
8201 The unit of van der Waals' constant 'b' is - 2 205 Recommended Questions $\text{cm}^3 \text{mol}^{-1}$, $\text{litre mol}^{-1}$... 4 Edit Delete
8200 In van der Waal's equation of state for a non-ideal gas, the term that accounts for the intermolecular force is- 2 205 Recommended Questions $V-b$, $(P+a/V^2)$... 2 Edit Delete
8199 The maximum deviation from ideal gas behaviour takes place - 2 205 Recommended Questions At high temperature and low pressure., At low temperature and high pressure.... 2 Edit Delete
8198 With 100% increase in temperature, the average velocity of a gaseous molecule increases by - 2 205 Recommended Questions $2.8$ times, $4.0$ times... 3 Edit Delete
8197 $\text{At 298 K, assuming ideal behaviour, the average kinetic energy of a deuterium molecule is -}$ 2 205 Recommended Questions $\text{Two times that of a hydrogen molecule}$, $\text{Four times that of a hydrogen molecule}$... 4 Edit Delete
8196 $\text{A helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is-}$ 2 205 Recommended Questions $\text{Same as that of a hydrogen molecule}$, $\text{Half that of a hydrogen molecule}$... 1 Edit Delete
8195 $\text{Pressure versus volume graph for a real gas and an ideal gas is shown below:}$\n\n$\text{[The graph shows two curves representing pressure vs. volume: a blue curve labeled "Real gas" and a red curve labeled "Ideal gas". At high pressures (low volumes), the real gas curve is higher than the ideal gas curve, showing significant deviation. As pressure decreases (volume increases), the two curves converge and nearly coincide at low pressures (high volumes).]}$\n\n$\text{The correct statement among the following is -}$ 2 205 Recommended Questions $\text{Real gases show a large deviation from ideal behaviour at low pressure.}$, $\text{Real gases show a very small deviation from ideal behaviour at low pressure.}$... 2 Edit Delete
8194 $\text{The kinetic energy for 14 }\textit{grams}\text{ of nitrogen gas at }127^{\circ}\text{C is nearly - }$\n\n$(\text{mol. mass of nitrogen = 28 and gas constant = 8.31JK}^{-1}\text{mol}^{-1})$ 2 205 Recommended Questions $1.0 \text{ J}$, $4.15 \text{ J}$... 3 Edit Delete
8193 $\text{A gas such as carbon monoxide would be most likely to obey the ideal gas law at-}$ 2 205 Recommended Questions $\text{High temperature and low pressure}$, $\text{Low temperature and high pressure}$... 1 Edit Delete
8192 $\text{The pressure of a 1 : 4 mixture of dihydrogen and dioxygen enclosed in a vessel is one atmosphere. The partial pressure of dioxygen is-}$ 2 205 Recommended Questions $0.8 \times 10^5 \text{ atm}$, $0.008 \text{ Nm}^{-2}$... 3 Edit Delete
8191 $\text{At STP, a container has 1 mole of He, 2 moles Ne, 3 moles of } \text{O}_2\text{, and 4 moles } \text{N}_2\text{. Without changing total pressure if 2 moles of } \text{O}_2 \text{ is removed, the partial pressure of } \text{O}_2 \text{ will be decreased by-}$ 2 205 Recommended Questions $26 \%$, $40 \%$... 3 Edit Delete
8190 $\text{In water-saturated air, the mole fraction of water vapor is 0.02. If the total pressure of the saturated air is 1.2 atm, the partial pressure of dry air is-}$ 2 205 Recommended Questions $1.17 \text{ atm}$, $1.76 \text{ atm}$... 1 Edit Delete
8189 $\text{Equal weights of methane and oxygen are mixed in an empty container at } 25^{\circ}\text{C}. \text{ The fraction of the total pressure exerted by oxygen is-}$ 2 205 Recommended Questions $1/3$, $1/2$... 1 Edit Delete
8188 $\text{Which among the following mixtures of gases at room temperature does not obey Dalton's law of partial pressure-}$ 2 205 Recommended Questions $\text{He and } \text{O}_2$, $\text{NH}_3 \text{ and HCl}$... 2 Edit Delete
8187 $\text{The partial pressure of } \text{H}_2 \text{ in a flask containing 2 g of } \text{H}_2\text{, 14 g of } \text{N}_2\text{, and 16 g of } \text{O}_2 \text{ is-}$ 2 205 Recommended Questions $1/2 \text{ of the total pressure}$, $1/3 \text{ of the total pressure}$... 1 Edit Delete
8186 $\text{Equal weights of ethane and hydrogen gas are mixed in an empty container at } 25^{\circ} \text{C}. \text{ The fraction of total pressure exerted by hydrogen is-}$ 2 205 Recommended Questions $1:2$, $1:1$... 4 Edit Delete
8185 $\text{In a flask of volume V litres, 0.2 mol of oxygen, 0.4 mol of nitrogen, 0.1 mol of ammonia and 0.3 mol of helium are enclosed at } 27^{\circ}\text{C}. \text{ If the total pressure exerted by these non-reacting gases is one atmosphere, the partial pressure exerted by nitrogen is-}$ 2 205 Recommended Questions $1 \text{ atm}$, $0.1 \text{ atm}$... 4 Edit Delete
8184 $\text{The partial pressure of oxygen in a flask containing 16 g } \text{O}_2 \text{ and 32 g } \text{SO}_2 \text{ is-}$ 2 205 Recommended Questions $1/16 \text{ of total pressure}$, $1/2 \text{ of total pressure}$... 2 Edit Delete
8183 $\text{A gaseous mixture contains 56 g of } \text{N}_2\text{, 44 g of } \text{CO}_2 \text{ and 16 g of } \text{CH}_4\text{. The total pressure of the mixture is 720 mm Hg. The partial pressure of } \text{CH}_4 \text{ is-}$ 2 205 Recommended Questions $180 \text{ mm}$, $360 \text{ mm}$... 1 Edit Delete
8182 $\text{The volume of 0.0168 mol of } \text{O}_2 \text{ obtained by decomposition of } \text{KClO}_3 \text{ and collected by displacement of water is 428 ml at a pressure of 754 mm Hg at } 25^{\circ}\text{C}. \text{ The pressure of water vapour at } 25^{\circ}\text{C} \text{ is-}$ 2 205 Recommended Questions $18 \text{ mm Hg}$, $20 \text{ mm Hg}$... 4 Edit Delete
8181 $\text{The condition that favour a pure sample of an ideal gas to have pressure of 1 atm and a concentration of}$\n\n$1 \text{ mol L}^{-1} \text{ is - }$\n\n$(\text{R}=0.082 \text{ L atm mol}^{-1}\text{K}^{-1})$ 2 205 Recommended Questions $\text{At STP}$, $\text{When V = 22.4 L}$... 3 Edit Delete
8180 $\text{6.4 grams of a gas , at } 0^{\circ}\text{C and 0.99 atm pressure occupies a volume of 2.241 L. The correct statement about this gas is-}$\n\n$\text{[Molecular mass of gas A = 64]}$ 2 205 Recommended Questions $\text{The gas is ideal}$, $\text{The gas is real with intermolecular attraction}$... 1 Edit Delete
8179 $\text{A certain hydrate has the formula } \text{MgSO}_4 \cdot \text{x} \text{H}_2 \text{O}. \text{ A quantity of 54.2 g of the compound is heated in an oven to drive off the water. If the water vapour generated exerts a pressure of 24.8 atm in a 2.0 L container at } 120^{\circ} \text{C}, \text{ the value of x is-}$ 2 205 Recommended Questions $2$, $5$... 4 Edit Delete
8178 $\text{A mixture of carbon monoxide and carbon dioxide is found to have a density of 1.7 g/L at S.T.P. The mole fraction of carbon monoxide is-}$ 2 205 Recommended Questions $0.37$, $0.40$... 1 Edit Delete
8177 \text{A collapsed polythene bag of 30 litre capacity is partially blown up by the addition of 10 litre of } N_2 \text{ at 0.965 atm at 298 K. Subsequently, enough } O_2 \text{ is pumped into the bag so that at 298 K and external pressure of 0.990 atm, the bag contains full 30 litre. The final pressure of } O_2 \text{ in the following experiment is-} 2 205 Recommended Questions 0.67 atm, 0.52 atm... 1 Edit Delete
8176 A flask containing air (open to atmosphere) is heated from 300 K to 500 K. The percentage of air escaped to the atmosphere is nearly- 2 205 Recommended Questions 16.6, 40... 2 Edit Delete
8175 A vessel of volume 0.02 m^{3} contains a mixture of hydrogen and helium at 20°C and 2 atm pressure. The mass of the mixture is 5 g. The ratio of the mass of hydrogen to that of helium in the mixture, is - 2 205 Recommended Questions 1:2, 1:3... 1 Edit Delete
8174 Find the mass of payload of a balloon of radius 10 m, if a mass of 100 kg is filled with helium at 1.66 bar and 27°C temperature. (Density of air = 1.2 kg/m³ and R = 0.083 bar·dm³·K⁻¹·mol⁻¹). 2 205 Recommended Questions 2905 Kg, 3811 Kg... 2 Edit Delete
8173 \text{A mixture of He and Ar weighing } 5.0 \text{ g occupies a volume of } 10 \, \text{dm}^3 \text{ at } 27°\text{C} \text{ and } 1 \text{ atm pressure. The composition of the mixture is respectively -} 2 205 Recommended Questions 70%, 30%, 25%, 75%... 2 Edit Delete
8172 H_{2} CO_{2} 2 205 Recommended Questions 10%, 13%... 2 Edit Delete
8171 An open flask containing air is heated from 300 K to 500 K. The percentage of air that will escape into the atmosphere if pressure is kept constant is- 2 205 Recommended Questions 80, 40... 2 Edit Delete
8170 If an open container is heated from 300 K to 400 K, then the % of gas that remains in the container is- 2 205 Recommended Questions 25%, 50%... 3 Edit Delete
8169 The pressure of 1 gm of an ideal gas A at 27 °C is found to be 2 bar. When 2 g of another ideal gas B is introduced in the same flask at the same temperature, the pressure becomes 3 bar. The correct relationship between their molecular masses is - 2 205 Recommended Questions M_A = M_B, 4M_A = M_B... 2 Edit Delete
8168 1.6 g \( O_2 \) gas and 0.1 g \( H_2 \) gas are placed in a 1.12 L flask at \( 0^\circ C \). The total pressure of the gas mixture will be- 2 205 Recommended Questions 2 atm, 3 atm... 1 Edit Delete
8167 Oxygen is present in a 1-litre flask at a pressure of \( 7.6 \times 10^{-10} \) mmHg. The number of oxygen molecules in the flask at \( 0^\circ C \) is - 2 205 Recommended Questions \( 2.686 \times 10^{10} \), \( 26.86 \times 10^{10} \)... 1 Edit Delete
8166 A 2.24 L cylinder of oxygen at STP is found to develop a leakage. When the leakage was plugged, the pressure dropped to 570 mm of Hg. The number of moles of gas that escaped will be: 2 205 Recommended Questions 0.050, 0.025... 2 Edit Delete
8165 If density of vapours of a substance of molar mass 18 g/mole at 1 atm pressure and 500 K is 0.36 kg m\(^{-3}\), then the value of Z for the vapours is- (R = 0.082 L atm mole K\(^{-1}\)) 2 205 Recommended Questions \(\frac{41}{50}\), \(\frac{50}{41}\)... 2 Edit Delete
8164 A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. The partial pressure of dihydrogen is - 2 205 Recommended Questions 0.2 bar, 0.7 bar... 3 Edit Delete
8163 The state of a gas can be described by quoting the relationship between: 2 205 Recommended Questions Pressure, volume, temperature, Temperature, amount, pressure... 4 Edit Delete
8162 34.05 mL of phosphorus vapour weighs 0.0625 g at 546 °C and 0.1 bar pressure. The molar mass of phosphorus would be - 2 205 Recommended Questions 1247.5 g mol\(^{-1}\), 2234.7 g mol\(^{-1}\)... 1 Edit Delete
8161 $ \text{The graph that represents an isobar } \left(\frac{\text{nR}}{\text{P}} > 1\right) \text{ is-} $ 2 205 Recommended Questions $ \text{Graph 1} $, $ \text{Graph 2} $... 2 Edit Delete
8160 \text{Equal masses of } H_2\text{, } O_2 \text{ and methane have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases } H_2:O_2:CH_4 \text{ would be-} 2 205 Recommended Questions \text{The ratio is } 8:16:1, \text{The ratio is } 16:8:1... 3 Edit Delete
8159 The pressure exerted by a mixture of 3.2 g of methane and 4.4 g of carbon dioxide contained in a 9 $\text{dm}^3$ flask at 27$^\circ$C would be: 2 205 Recommended Questions $8.31 \times 10^4 \text{ Pa}$, $7.43 \times 10^{-4} \text{ Pa}$... 1 Edit Delete
8158 The density of a gas is $1.964 \text{ g dm}^{-3}$ at $273 \text{ K}$ and $76 \text{ cm Hg}$. The gas is: 2 205 Recommended Questions $\text{CH}_4$, $\text{C}_2\text{H}_6$... 3 Edit Delete
8157 The volume of 2.8 g of carbon monoxide at 27$^\circ$C and 0.821 atm pressure is: \n\n($\text{R} = 0.0821 \text{ L atm K}^{-1} \text{mol}^{-1}$) 2 205 Recommended Questions $0.3 \text{ L}$, $1.5 \text{ L}$... 3 Edit Delete
8156 3.2 g of oxygen and 0.2 g of hydrogen are placed in a 1.12 litre flask at 0$^\circ$C. The total pressure of the gas mixture will be: 2 205 Recommended Questions $1 \text{ atm}$, $4 \text{ atm}$... 2 Edit Delete
8155 At a certain temperature for which $\text{RT} = 25 \text{ L atm mol}^{-1}$, the density of a gas, in $\text{g L}^{-1}$, is $\text{d} = 2.00\text{P} + 0.020 \text{P}^2$, where $\text{P}$ is the pressure in atmosphere. The molecular weight of the gas in $\text{g mol}^{-1}$ is: 2 205 Recommended Questions $25$, $50$... 2 Edit Delete
8154 The volume occupied by 8.8 g of $\text{CO}_2$ at 31.1$^\circ\text{C}$ and 1 bar pressure is: \n\n($\text{R} = 0.083 \text{ bar L K}^{-1} \text{mol}^{-1}$) 2 205 Recommended Questions $4.05 \text{ L}$, $3.05 \text{ L}$... 4 Edit Delete
8153 Two flasks of equal volume are connected by a narrow tube (of negligible volume) at $27^\circ\text{C}$ and contain $0.70$ mole of $\text{H}_2$ at $0.5$ atm. One of the flasks is then immersed in a hot bath, kept at $127^\circ\text{C}$, while the other remains at $27^\circ\text{C}$. The final pressure is - 2 205 Recommended Questions $5.714 \, \text{atm}$, $0.5714 \, \text{atm}$... 2 Edit Delete
8152 $\text{The volume occupied by 1.8 g of water vapour at 374 }^\circ\text{C and 1 bar pressure will be -}\n\n\text{[Use R=0.083 bar LK}^{-1}\text{ mol}^{-1}\text{]}$ 2 205 Recommended Questions $96.66\text{ L}$, $55.87\text{ L}$... 4 Edit Delete
8151 $\text{2.9 g of a gas at 95 }^\circ\text{C occupies the same volume as 0.184 g of dihydrogen at 17 }^\circ\text{C, at the same pressure. The molar mass of the gas is -}$ 2 205 Recommended Questions $20\text{ g mol}^{-1}$, $40\text{ g mol}^{-1}$... 2 Edit Delete
8150 $\text{Flask X is filled with 20 g of CH}_4\text{ gas at 100 }^\circ\text{C and another identical flask Y with 40 g O}_2\text{ gas at the same temperature. The correct statement among the following is -}$ 2 205 Recommended Questions $\text{The pressure of the gases in the two flasks is identical}$, $\text{The pressure of CH}_4\text{ in flask X is higher than that of O}_2\text{ in flask Y}$... 1 Edit Delete
8149 $7.0\text{ g of gas occupies 5.6 L of volume at STP. The gas is-}$ 2 205 Recommended Questions $\text{NO}$, $\text{N}_2 ext{O}$... 3 Edit Delete
8148 $\text{The temperature of 4.0 mole of a gas occupying 5 dm}^3 ext{ at 3.32 bar is - (R = 0.083 bar dm}^3 ext{ K}^{-1} ext{ mol}^{-1} ext{)}.$ 2 205 Recommended Questions $40\text{ K}$, $30\text{ K}$... 4 Edit Delete
8147 $ \text{The number of moles of } \text{H}_2 \text{ in 0.224 litre of hydrogen gas at STP (273 K, 1 atm.) is-} $ 2 205 Recommended Questions $ \text{1. 1} $, $ \text{2. 0.1} $... 3 Edit Delete
8146 \text{120 g of an ideal gas of molecular weight 40 g/mol are confined to a volume of 20 L at 400 K. The pressure of the gas is} \\ (R = 0.0821 \text{ L atm K}^{-1} \text{ mol}^{-1}) 2 205 Recommended Questions $ \text{3.90 atm} $, $ \text{4.92 atm} $... 2 Edit Delete
8145 $ \text{The volume of } \text{H}_2 \text{ that would be released when 0.15 g of aluminium reacts at 20 } ^\circ \text{C and 1 bar pressure with caustic soda is-} $ 2 205 Recommended Questions $ \text{2.25 L} $, $ \text{301 mL} $... 4 Edit Delete
8144 $ \text{The increase in pressure in order to decrease the volume of a gas by 5\% at a constant temperature will be -} $ 2 205 Recommended Questions $ \text{5\%} $, $ \text{5.26\%} $... 2 Edit Delete
8143 $\text{The beans are cooked in pressure cooker, because -}$ 2 205 Recommended Questions $\text{Boiling point increases with increasing pressure}$, $\text{Boiling point decreases with increasing pressure}$... 1 Edit Delete
8142 $\text{A mixture of CO and CO}_2 \text{ is found to have a density } 1.5\text{ g/litre at } 30^{\circ}\text{C and } 730\text{ mm. The composition of the mixture is-}$ 2 205 Recommended Questions $\text{CO: } 44\%; \text{ CO}_2 = 56\%$, $\text{CO: } 32\%; \text{ CO}_2 = 68\%$... 2 Edit Delete
8141 $\text{A sealed tube which can withstand a pressure of } 3 \text{ atmosphere is filled with air at } 27^{\circ}\text{C and } 760\text{ mm pressure. The tube will burst at -}$ 2 205 Recommended Questions $900^{\circ}\text{C}$, $627^{\circ}\text{C}$... 2 Edit Delete
8140 $\text{At constant temperature, } 200\text{ cm}^3 \text{ of N}_2 \text{ at } 720\text{ mm and } 400\text{ cm}^3 \text{ of O}_2 \text{ at } 750\text{ mm pressure are put together in a one-litre flask. The final pressure of the mixture is-}$ 2 205 Recommended Questions $111\text{ mm}$, $222\text{ mm}$... 4 Edit Delete
8139 $\text{The density of }\text{O}_2\text{(g) is maximum at-}$ 2 205 Recommended Questions $\text{STP}$, $273\ \text{K and } 2\ \text{atm}$... 2 Edit Delete
8138 \text{The volume of a gas is } 100 \text{ ml at } 100^{\circ}\text{C. If the pressure remains constant then the temperature at which the volume becomes } 200 \text{ ml is-} 2 205 Recommended Questions $200^{\circ}\text{C}$, $473^{\circ}\text{C}$... 2 Edit Delete
8137 $\text{The correct statement for an ideal gas equation is -}$ 2 205 Recommended Questions $\text{n is the number of molecules of a gas.}$, $\text{V denotes the volume of 1 mole of the gas.}$... 3 Edit Delete
8136 $\text{The curve that can not represent Boyle's law is -}$ 2 205 Recommended Questions $\text{A curve showing P inversely proportional to V (hyperbola)}$, $\text{A straight line graph of log P vs log V with a negative slope}$... 3 Edit Delete
8135 $\text{An ideal gas expands according to PV=constant. On expansion, the temperature of the gas:}$ 2 205 Recommended Questions $\text{Will rise.}$, $\text{Will drop.}$... 3 Edit Delete
8134 $\text{The deviation of a gas from ideal behavior is expected to be minimum at -}$ 2 205 Recommended Questions $\text{350 K and 3 atm}$, $\text{550 K and 1 atm}$... 2 Edit Delete
8133 $\text{The pressure-volume plot for an ideal gas at a given temperature has the form of a -}$ 2 205 Recommended Questions $\text{Straight line}$, $\text{Exponential curve}$... 3 Edit Delete
8132 $\text{A person living in Shimla observed that cooking food without using a pressure cooker takes more time. The reason for this observation is-}$ 2 205 Recommended Questions $\text{Pressure increases}$, $\text{Temperature decreases}$... 3 Edit Delete
8131 $\text{The density of methane at } 2.0 \text{ atmosphere pressure and } 27^{\circ}\text{C is-}$ 2 205 Recommended Questions $0.13 \text{ gL}^{-1}$, $0.26 \text{ gL}^{-1}$... 3 Edit Delete
8130 \text{If } 1 \text{ g of each of the following gases are taken at STP, then the gas that will have the highest volume is - } \text{CO, H}_2\text{O, CH}_4\text{, NO} 2 205 Recommended Questions $\text{CH}_4$, $\text{H}_2\text{O}$... 1 Edit Delete
8129 $\text{The variation of pressure with the volume of the gas at different temperatures can be graphically represented as per the following graph:}$ $\text{If the temperature increases from } 200\text{K to } 400\text{K (at constant pressure), the volume of a gas would-}$ 2 205 Recommended Questions $\text{Increase}$, $\text{Decrease}$... 1 Edit Delete
8128 $\text{For a real gas, PV is a constant over a small range of pressures at-}$ 2 205 Recommended Questions $\text{Boyle's temperature}$, $\text{Critical temperature}$... 1 Edit Delete
8127 $\text{The plots of different values of pressure versus temperature are shown in the given figure. The correct order of volume for the following plot is-}$ 2 205 Recommended Questions $V_4 < V_3 < V_2 < V_1$, $V_4 > V_3 < V_2 > V_1$... 3 Edit Delete
8126 $\text{A } 200 \text{ mL flask having oxygen at } 220 \text{ mm and a } 300 \text{ mL flask having nitrogen at } 100 \text{ mm are connected in such a way that } \text{O}_2 \text{ and } \text{N}_2 \text{ may combine in their volumes if temperature is kept constant. The total pressure of the gaseous mixture is-}$ 2 205 Recommended Questions $158 \text{ mm}$, $138 \text{ mm}$... 3 Edit Delete
8125 $\text{At } 0^{\circ}\text{C, the density of a certain oxide of a gas at 2 bar is the same as that of dinitrogen at 5 bar.}$ $\text{The molecular mass of the oxide would be -}$ 2 205 Recommended Questions $35 \text{ g/mol}$, $45 \text{ g/mol}$... 3 Edit Delete
8124 $\text{V versus T curves at constant pressure P}_1 \text{ and P}_2 \text{ for an ideal gas are as shown in the figure. The correct statement is-}$ 2 205 Recommended Questions $\text{P}_1 > \text{P}_2$, $\text{P}_1 < \text{P}_2$... 2 Edit Delete
8123 $\text{A plot of volume versus temperature (T) for a gas at constant pressure is a straight line passing through the origin. The plots at different values of pressure are shown in the figure given below.}$ $\text{The correct order of pressure is -}$ 2 205 Recommended Questions $p_1 > p_2 > p_3 > p_4$, $p_1 = p_2 = p_3 = p_4$... 3 Edit Delete
8122 As the temperature increases, average kinetic energy of molecules increases. With increase in temperature at constant volume, the pressure - 2 205 Recommended Questions $\text{Increases}$, $\text{Decreases}$... 1 Edit Delete
8121 $\text{Boyle's law is applicable in :}$ 2 205 Recommended Questions $\text{Isobaric process}$, $\text{Isochoric process}$... 3 Edit Delete
8120 If $300 \text{ ml}$ of a gas at $27^\circ\text{C}$ is cooled to $7^\circ\text{C}$ at constant pressure, its final volume will be: 2 205 Recommended Questions $135 \text{ ml}$, $540 \text{ ml}$... 4 Edit Delete
8119 $\text{The condition of SATP refers to:}$ 2 205 Recommended Questions $25^\circ\text{C and 2 atm}$, $25^\circ\text{C and 1 atm}$... 4 Edit Delete
8118 The interaction energy of London force is inversely proportional to sixth power of the distance between two interacting particles. Their magnitude depends upon- 2 205 Recommended Questions Charge of interacting particles., Mass of interacting particles.... 3 Edit Delete
8117 The Lewis dot symbols for atoms of the elements $\text{Mg}$, $\text{Na}$, $\text{O}$, and $\text{N}$, respectively, would be: 2 204 Recommended Questions $\text{O}$, $\text{N}$, $\text{Mg}$, $\text{Na}$, $\text{O}$, $\text{N}$, $\text{Mg}$, $\text{Na}$... 3 Edit Delete
8116 The correct statement about hydrolysis of $\text{BCl}_3$ and $\text{NCl}_3$ is- 2 204 Recommended Questions $\text{NCl}_3$ is hydrolysed and gives $\text{HOCl}$ but $\text{BCl}_3$ is not hydrolysed, Both $\text{NCl}_3$ and $\text{BCl}_3$ on hydrolysis gives $\text{HCl}$... 3 Edit Delete
8115 The correct order of solubility in an aqueous medium is: 2 204 Recommended Questions $\text{CuS} > \text{ZnS} > \text{Na}_2\text{S}$, $\text{ZnS} > \text{Na}_2\text{S} > \text{CuS}$... 4 Edit Delete
8114 $\text{O} - \text{O}$ bond length (in $\mathring{\text{A}}$) in $\text{H}_2\text{O}_2$ and $\text{O}_2\text{F}_2$ is respectively: 2 204 Recommended Questions $1.22, 1.48$, $1.48, 1.22$... 2 Edit Delete
8113 Which is the least polarizable gas among the following? 2 204 Recommended Questions $\text{He}$, $\text{Ne}$... 1 Edit Delete
8112 $\text{The correct order of acidic strength is :}$ 2 204 Recommended Questions $\text{Cl}_2\text{O}_7 > \text{SO}_2 > \text{P}_4\text{O}_{10}$, $\text{CO}_2 > \text{N}_2\text{O}_5 > \text{SO}_3$... 1 Edit Delete
8111 $\text{PCl}_5 \text{ exists but } \text{NCl}_5 \text{ does not because:}$ 2 204 Recommended Questions $\text{Nitrogen has no vacant d-subshells.}$, $\text{NCl}_5 \text{ is unstable.}$... 1 Edit Delete
8110 $\text{The incorrect order of the force of attraction among the given species is :}$ 2 204 Recommended Questions $\text{HI} > \text{HBr} > \text{Cl}_2$, $\text{CCl}_4 > \text{CH}_2\text{Cl}_2 > \text{CH}_3\text{Cl} > \text{CH}_4$... 1 Edit Delete
8109 $\text{The compound that has the lowest boiling point is:}$ 2 204 Recommended Questions $\text{HF}$, $\text{HCl}$... 4 Edit Delete
8108 $\text{The correct order of H-bond strength in the following compounds is:}$ 2 204 Recommended Questions $\text{H}_2\text{O} > \text{H}_2\text{O}_2 > \text{HF} > \text{H}_2\text{S}$, $\text{HF} > \text{H}_2\text{O}_2 > \text{H}_2\text{O} > \text{H}_2\text{S}$... 2 Edit Delete
8107 $\text{In which of the following compounds is an intramolecular hydrogen bond present?}$ 2 204 Recommended Questions $\text{H}_2\text{O}_2$, $\text{HCN}$... 2 Edit Delete
8106 $\text{The incorrect order of boiling point is-}$ 2 204 Recommended Questions $\text{H}_2\text{O} > \text{CH}_3\text{OH}$, $\text{N}(\text{CH}_3)_3 < \text{NH}(\text{CH}_3)_2$... 3 Edit Delete
8105 $\text{The correct order of the boiling points of } \text{H}_2\text{O}, \text{HF}, \text{ and } \text{NH}_3 \text{ is:}$ 2 204 Recommended Questions $\text{HF} > \text{H}_2\text{O} > \text{NH}_3$, $\text{H}_2\text{O} > \text{HF} > \text{NH}_3$... 4 Edit Delete
8104 $\text{Which molecule is least likely to form hydrogen bonds?}$ 2 204 Recommended Questions $\text{NH}_3$, $\text{H}_2\text{NOH}$... 2 Edit Delete
8103 $\text{The type of molecular forces of attraction present in the following compound is:}$ 2 204 Recommended Questions $\text{Intermolecular H-bonding.}$, $\text{Intramolecular H-bonding.}$... 4 Edit Delete
8102 $\text{Which of the following molecules exhibits H-bonding?}$ 2 204 Recommended Questions $\text{CH}_4$, $\text{H}_2\text{Se}$... 4 Edit Delete
8101 $\text{Compound that does not exhibit hydrogen bonding is-}$ 2 204 Recommended Questions $\text{CH}_3\text{CH}_2\text{OH}$, $\text{H}_3\text{C}—\text{C}(=\text{O})—\text{OH}$... 3 Edit Delete
8100 $\text{The strongest hydrogen bond present among the following is-}$ 2 204 Recommended Questions $\text{O}—\text{H}\cdots\text{S}$, $\text{S}—\text{H}\cdots\text{O}$... 3 Edit Delete
8099 $\text{Amongst } \text{H}_2\text{O}, \text{H}_2\text{S}, \text{H}_2\text{Se} \text{ and } \text{H}_2\text{Te} \text{ the one with the highest boiling point is:}$ 2 204 Recommended Questions $\text{H}_2\text{O} \text{ because of H-bonding.}$, $\text{H}_2\text{Te} \text{ because of higher molecular weight.}$... 3 Edit Delete
8098 142 2 204 Recommended Questions 1, 2... 1 Edit Delete
8097 $\text{Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule } \text{B}_2 \text{ is:}$ 2 204 Recommended Questions $1 \text{ and diamagnetic}$, $0 \text{ and diamagnetic}$... 3 Edit Delete
8096 $\text{A diatomic molecule, among the following species, that only has } \pi \text{ bonds according to the Molecular Orbital Theory (MOT) is:}$ 2 204 Recommended Questions $\text{Be}_2$, $\text{O}_2$... 1 Edit Delete
8095 $\text{The plus and negative sign of the orbitals mean:}$ 2 204 Recommended Questions $\text{Wave function.}$, $\text{Probability density.}$... 4 Edit Delete
8094 $\text{Which of the following conversions demonstrates an increase in bond order and a change in magnetic behaviour?}$ 2 204 Recommended Questions $\text{NO} \rightarrow \text{NO}^+$, $\text{O}_2 \rightarrow \text{O}_2^+$... 1 Edit Delete
8093 $\text{The species that does not have unpaired electrons is:}$ 2 204 Recommended Questions $\text{N}_2^+$, $\text{O}_2$... 1 Edit Delete
8092 $\text{N}_2 \text{ and } \text{O}_2 \text{ are converted to monocations } \text{N}_2^+ \text{ and } \text{O}_2^+ \text{ respectively. Which of the following is incorrect?}$ 2 204 Recommended Questions $\text{In } \text{N}_2^+, \text{ the } \text{N} - \text{N} \text{ bond weakens.}$, $\text{In } \text{O}_2^+, \text{ the } \text{O} - \text{O} \text{ bond order increases.}$... 3 Edit Delete
8091 $\text{From the perspective of molecular orbital theory, which statement is false?}$ 2 204 Recommended Questions 1, 2... 4 Edit Delete
8090 $\text{A molecule/ion among the following species that does not exist under normal conditions is:}$ 2 204 Recommended Questions $\text{Be}_2^+$, $\text{Be}_2$... 4 Edit Delete
8089 $\text{The decreasing order of stability of } \text{O}_2, \text{O}_2^-, \text{O}_2^+ \text{ and } \text{O}_2^{2-} \text{ is:}$ 2 204 Recommended Questions $\text{O}_2^+ > \text{O}_2 > \text{O}_2^- > \text{O}_2^{2-}$, $\text{O}_2^{2-} > \text{O}_2^- > \text{O}_2 > \text{O}_2^+$... 2 Edit Delete
8088 $\text{Combination of atoms A and B that forms an anti-bonding molecular orbital is:}$ 2 204 Recommended Questions $\frac{\Psi_A^2}{\Psi_B^2}$, $\Psi_A^2 \times \Psi_B^2$... 1 Edit Delete
8087 Which of the following has the minimum bond length? 2 204 Recommended Questions $\text{O}_2^-$, $\text{O}_2^{2-}$... 4 Edit Delete
8086 The specie with the shortest bond length is: 2 204 Recommended Questions $\text{O}_2^+$, $\text{O}_2^-$... 4 Edit Delete
8085 The correct order of bond order in the following species is: 2 204 Recommended Questions $\text{O}_2^{2+} > \text{O}_2^+ > \text{O}_2^-$, $\text{O}_2^{2+} < \text{O}_2^- < \text{O}_2^+$... 4 Edit Delete
8084 In which of the following pairs of molecules/ions, the central atoms have $\text{sp}^2$ hybridisation? 2 204 Recommended Questions $\text{NO}_2^-$ and $\text{NH}_3$, $\text{BF}_3$ and $\text{NO}_2^-$... 1 Edit Delete
8083 The relative order of stability of the following species: $\text{O}_2$, $\text{O}_2^+$, $\text{O}_2^-$, and $\text{O}_2^{2-}$ is - 2 204 Recommended Questions $\text{O}_2^+ > \text{O}_2 > \text{O}_2^- > \text{O}_2^{2-}$, $\text{O}_2^{2-} > \text{O}_2 > \text{O}_2^- > \text{O}_2^+$... 2 Edit Delete
8082 The bond order of $1.5$ is shown by: 2 204 Recommended Questions $\text{O}_2^{+}$, $\text{O}_2^{-}$... 1 Edit Delete
8081 The bond order of $1.5$ is shown by: 2 204 Recommended Questions $\text{O}_2^{+}$, $\text{O}_2^{-}$... 2 Edit Delete
8080 A pair in which both species are not likely to exist is: 2 204 Recommended Questions $\text{H}_2^{+}, \text{He}_2^{2-}$, $\text{H}_2^{-}, \text{He}_2^{2+}$... 3 Edit Delete
8079 What is the correct sequence of bond order for the specified species? 2 204 Recommended Questions $\text{O}_2^{-} > \text{O}_2 > \text{O}_2^{+}$, $\text{O}_2^{-} < \text{O}_2 < \text{O}_2^{+}$... 2 Edit Delete
8078 Which of the following is a diamagnetic species? 2 204 Recommended Questions $\text{O}_2$, $\text{O}_2^{2-}$... 2 Edit Delete
8077 Paramagnetic species among the following is: 2 204 Recommended Questions $ \text{CO} $, $ \text{O}_2^{-} $... 2 Edit Delete
8076 In the option are given sequences of increasing bond order for the following species. The correct option is : $ \text{O}_2, \text{N}_2, \text{O}_2^{+} \text{ and } \text{O}_2^{-} $ 2 204 Recommended Questions $ \text{O}_2 > \text{N}_2 > \text{O}_2^{+} > \text{O}_2^{-} $, $ \text{O}_2^{-} > \text{O}_2 > \text{O}_2^{+} > \text{N}_2 $... 3 Edit Delete
8075 Molecule/Ion that is diamagnetic in nature is: 2 204 Recommended Questions $ \text{H}_2^{-} $, $ \text{H}_2 $... 2 Edit Delete
8074 A paramagnetic molecule among the following is: 2 204 Recommended Questions $ \text{O}_2^{-} $, $ \text{CN}^{-} $... 1 Edit Delete
8073 The bond angle between two hybrid orbitals is $105^{\circ}$. The $ \% $ s character in orbital is- 2 204 Recommended Questions Between 30-31%, Between 9-12%... 4 Edit Delete
8072 In $\text{BrF}_3$ molecule, the lone pairs occupy equatorial positions to minimize: 2 204 Recommended Questions Lone pair-bond pair repulsion., Bond pair-bond pair repulsion.... 3 Edit Delete
8071 Which of the following compounds is a planar and a polar compound? 2 204 Recommended Questions $\text{TeCl}_4$, $\text{SO}_2$... 2 Edit Delete
8070 Which species lacks tetrahedral geometry? 2 204 Recommended Questions $\text{BH}_4^{-}$, $\text{NH}_2^{-}$... 3 Edit Delete
8069 The 'S' atom among the following that does not have $\text{sp}^3$ hybridization is 2 204 Recommended Questions $\text{SO}_4^{2-}$, $\text{SF}_4$... 2 Edit Delete
8068 From the following pairs, the two species that are not isostructural are : 2 204 Recommended Questions $\text{PF}_5\text{ and BrF}_5$, $\text{PCl}_4^{+}\text{ and SiCl}_4$... 1 Edit Delete
8067 A molecule that has an unequal bond length is : 2 204 Recommended Questions $\text{ClF}_3$, $\text{BF}_3$... 1 Edit Delete
8066 The incorrect statement about $\text{NH}_3$ and $\text{H}_2\text{O}$ is: 2 204 Recommended Questions The bond angle in $\text{NH}_3$ is less than in $\text{H}_2\text{O}$., Both have distorted tetrahedral geometries.... 1 Edit Delete
8065 A bent T-shape molecule among the following is: 2 204 Recommended Questions $\text{ICl}_4^{-}$, $\text{PCl}_3$... 3 Edit Delete
8064 $\text{Which of the following species has a linear shape?}$ 2 204 Recommended Questions $\text{NO}_2^{-}$, $\text{SO}_2$... 3 Edit Delete
8063 $\text{In which of the following molecules are all the bonds not equal?}$ 2 204 Recommended Questions $\text{ClF}_3$, $\text{BF}_3$... 1 Edit Delete
8062 $\text{The correct order of increasing s-character (in percentage) in the hybrid orbitals of the following molecules/ions is:}$ $\text{(i) } \text{CO}_3^{2-}$ $\text{(ii) } \text{XeF}_4$ $\text{(iii) } \text{I}_3^{-}$ $\text{(iv) } \text{NCl}_3$ $\text{(v) } \text{BeCl}_2$ 2 204 Recommended Questions $\text{(ii)}<\text{(iii)}<\text{(iv)}<\text{(i)}<\text{(v)}$, $\text{(ii)}<\text{(iv)}<\text{(iii)}<\text{(v)}<\text{(i)}$... 1 Edit Delete
8061 $\text{The correct geometry and hybridization for XeF}_4 \text{ are :}$ 2 204 Recommended Questions $\text{Octahedral, sp}^3\text{d}^2$, $\text{Trigonal bipyramidal, sp}^3\text{d}^3$... 4 Edit Delete
8060 $\text{Mg}_2\text{C}_3$ reacts with water forming propyne $\text{C}_3^{4-}$. The number of sigma and pie bonds in $\text{C}_3^{4-}$ is- 2 204 Recommended Questions $\text{Two sigma and two pi bonds.}$, $\text{Three sigma and one pi bonds.}$... 1 Edit Delete
8059 The maximum number of $90^\circ$ angles between bond pair-bond pair of electrons is observed in: 2 204 Recommended Questions $\text{sp}^3\text{d}^2\text{-hybridization.}$, $\text{sp}^3\text{d-hybridization.}$... 1 Edit Delete
8058 $\text{CH}_4\text{ does not exhibit square planar geometry because:}$ 2 204 Recommended Questions $\text{For square planar geometry, 5 bonds are required.}$, $\text{Carbon does not have d-orbitals to undergo dsp}^2\text{ hybridization.}$... 2 Edit Delete
8057 Match the compounds given in Column I with the hybridization and shape given in Column II and mark the correct option. $\text{Column I}\hspace{20mm}\text{Column II}$ $\text{A. }\text{XeF}_6\hspace{20mm}1.\text{ Distorted octahedral}$ $\text{B. }\text{XeO}_3\hspace{20mm}2.\text{ Square planar}$ $\text{C. }\text{XeOF}_4\hspace{18mm}3.\text{ Pyramidal}$ $\text{D. }\text{XeF}_4\hspace{20mm}4.\text{ Square pyramidal}$ 2 204 Recommended Questions A-1, B-2, C-4, D-3, A-4, B-3, C-1, D-2... 4 Edit Delete
8056 Match the compounds of $\text{Xe}$ in column $\text{I}$ with the molecular structure in column $\text{II}.$ $\text{Column-I}\hspace{20mm}\text{Column-II}$ $(\text{a})\text{ }\text{XeF}_2\hspace{20mm}(\text{i})\text{ Square planar}$ $(\text{b})\text{ }\text{XeF}_4\hspace{20mm}(\text{ii})\text{ Linear}$ $(\text{c})\text{ }\text{XeO}_3\hspace{20mm}(\text{iii})\text{ Square pyramidal}$ $(\text{d})\text{ }\text{XeOF}_4\hspace{18mm}(\text{iv})\text{ Pyramidal}$ 2 204 Recommended Questions (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv), (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)... 4 Edit Delete
8055 The pair of electrons in the given carbanion, $\text{CH}_3\text{C}\equiv\text{C}^{-}$, is present in which of the following orbitals? 2 204 Recommended Questions $\text{sp}^3$, $\text{sp}^2$... 3 Edit Delete
8054 $\text{Considering the X-axis as the internuclear axis, a sigma bond will not be formed in:}$ 2 204 Recommended Questions $1s \text{ and } 2s$, $1s \text{ and } 2p_x$... 3 Edit Delete
8053 $\text{Which of the following pairs of species have similar shapes?}$ 2 204 Recommended Questions $\text{PCl}_3, \text{NH}_3$, $\text{CF}_4, \text{SF}_4$... 3 Edit Delete
8052 $\text{Which of the following species has a bond angle of } 120^{\circ}?$ 2 204 Recommended Questions $\text{SF}_6$, $\text{NCl}_3$... 1 Edit Delete
8051 $\text{The geometry and the dipole moment of } \text{H}_2\text{S is:}$ 2 204 Recommended Questions $\text{Angular (distorted tetrahedral) and non-zero.}$, $\text{Angular and zero.}$... 3 Edit Delete
8050 $\text{AlCl}_3 + \text{Cl}^- \rightarrow \text{AlCl}_4^-$ $\text{The change in the hybridization of the Al atom in the above reaction is:}$ 2 204 Recommended Questions $sp^2 \text{ to } sp^3$, $sp^3 \text{ to } sp^2$... 1 Edit Delete
8049 The correct order of electronegativity of hybrid orbitals of carbon is: 2 204 Recommended Questions $sp > sp^2 < sp^3$, $sp > sp^2 > sp^3$... 1 Edit Delete
8048 A pair of species that have identical shapes is : 2 204 Recommended Questions $\text{NO}_2^+$ and $\text{NO}_2^-$, $\text{PCl}_5$ and $\text{BrF}_5$... 2 Edit Delete
8047 Given the following hydrocarbon: $\text{CH}_3 - \text{C}(\text{CH}_3)_2 - \text{CH} = \text{CH} - \text{CH}(\text{CH}_3) - \text{C} \equiv \text{CH}$ The state of hybridisation of carbons marked 2, 3, 5 and 6 in the following hydrocarbon are, respectively : 2 204 Recommended Questions $\text{sp}$, $\text{sp}^3$, $\text{sp}^2$ and $\text{sp}^3$, $\text{sp}^3$, $\text{sp}^2$, $\text{sp}^2$ and $\text{sp}$... 3 Edit Delete
8046 Isostructural pair among the following is: 2 204 Recommended Questions $\text{BCl}_3$ and $\text{BrCl}_3$, $\text{NH}_3$ and $\text{NO}_3^-$... 1 Edit Delete
8045 In which of the following molecules/ions $\text{BF}_3$, $\text{NO}_2^-$, $\text{NH}_2^-$ and $\text{H}_2\text{O}$, the central atom is $\text{sp}^2$ hybridized? 2 204 Recommended Questions $\text{NO}_2^-$ and $\text{NH}_2^-$, $\text{NH}_2^-$ and $\text{H}_2\text{O}$... 4 Edit Delete
8044 ${XeF}_2 \text{ is isostructural with :}$ 2 204 Recommended Questions $\text{TeF}_2$, $\text{ICl}_2^{-}$... 4 Edit Delete
8043 Among the following molecules/ions $\text{BF}_3$, $\text{NO}_2^-$, $\text{NH}_2^-$, and $\text{H}_2\text{O}$, the central atom is $\text{sp}^2$ hybridized in : 2 204 Recommended Questions $\text{NO}_2^-$ and $\text{NH}_2^-$, $\text{NH}_2^-$ and $\text{H}_2\text{O}$... 2 Edit Delete
8042 $\text{XeF}_2$ is isostructural with : 2 204 Recommended Questions $\text{SbCl}_3$, $\text{BCl}_3$... 4 Edit Delete
8041 The hybridization of nitrogen in $\text{NO}_2^+$, $\text{NO}_3^-$ and $\text{NH}_4^+$ respectively is : 2 204 Recommended Questions $\text{sp}$, $\text{sp}^3$, and $\text{sp}^2$, $\text{sp}$, $\text{sp}^2$, and $\text{sp}^3$... 4 Edit Delete
8040 The correct bond angle for $\text{sp}^2$ hybridization is: 2 204 Recommended Questions $90^\circ$, $120^\circ$... 2 Edit Delete
8039 The hybridization of orbitals of $\text{N}$ atom in $\text{NO}_3^ -$, $\text{NO}_2^+$, and $\text{NH}_4^+$ are respectively: 2 204 Recommended Questions $\text{sp}$, $\text{sp}^2$, $\text{sp}^3$, $\text{sp}^2$, $\text{sp}$, $\text{sp}^3$... 2 Edit Delete
8038 The $\text{BF}_3$ is a planar molecule whereas $\text{NF}_3$ is pyramidal because: 2 204 Recommended Questions $\text{B} - \text{F}$ bond is more polar than $\text{N} - \text{F}$ bond., Boron atom is bigger than nitrogen atom.... 2 Edit Delete
8037 The correct increasing order of bond angles in the following species is: 2 204 Recommended Questions $\text{Cl}_2\text{O} < \text{ClO}_2 < \text{ClO}_2^-$, $\text{ClO}_2^ - < \text{Cl}_2\text{O} < \text{ClO}_2$... 4 Edit Delete
8036 A molecule having the smallest bond angle among the following is : 2 204 Recommended Questions $\text{SO}_2$, $\text{H}_2\text{O}$... 4 Edit Delete
8035 The molecular geometry that is least likely to result from a trigonal bipyramidal electron geometry is: 2 204 Recommended Questions Trigonal planar, See-saw... 3 Edit Delete
8034 A molecule or ion that has an unequal bond length is: 2 204 Recommended Questions $\text{SF}_4$, $\text{SiF}_4$... 1 Edit Delete
8033 The incorrect statement among the following regarding the molecules of $\text{CH}_4$, $\text{NH}_3$, and $\text{H}_2\text{O}$ is: 2 204 Recommended Questions The $\text{H-O-H}$ bond angle in $\text{H}_2\text{O}$ is larger than the $\text{H-C-H}$ bond angle in $\text{CH}_4$., The $\text{H-O-H}$ bond angle in $\text{H}_2\text{O}$ is smaller than the $\text{H-N-H}$ bond angle in $\text{NH}_3$.... 1 Edit Delete
8032 The molecule having the smallest bond angle is- 2 204 Recommended Questions $\text{PCl}_3$, $\text{NCl}_3$... 1 Edit Delete
8031 The bond angles of $\text{NH}_3$, $\text{NH}_4^+$ and $\text{NH}_2^-$ are in the order : 2 204 Recommended Questions $\text{NH}_2^- > \text{NH}_3 > \text{NH}_4^+$, $\text{NH}_4^+ > \text{NH}_3 > \text{NH}_2^-$... 4 Edit Delete
8030 The correct order of the increasing bond angles in the following triatomic species is: 2 204 Recommended Questions $\text{NO}_2^- < \text{NO}_2^+ < \text{NO}_2$, $\text{NO}_2^- < \text{NO}_2 < \text{NO}_2^+$... 2 Edit Delete
8029 Correct statement among the following regarding the shape of $\text{HgCl}_2$, $\text{SnCl}_2$ and $\text{F}_2\text{O}$ is: 2 204 Recommended Questions All have a linear shape., $\text{SnCl}_2$ are linear and $\text{HgCl}_2$ is V-shaped.... 2 Edit Delete
8028 The shape of $\text{XeF}_3^+$ is: 2 204 Recommended Questions Trigonal planar, Pyramidal... 3 Edit Delete
8027 Which among the following species has a triangular planar shape? 2 204 Recommended Questions $N_3^{-}$, $NO_3^{-}$... 3 Edit Delete
8026 The shape of $AsF_5$ is: 2 204 Recommended Questions Pentagonal bipyramidal., Trigonal bipyramidal.... 2 Edit Delete
8025 The correct relationship for the bond angle of water and dimethyl ether $(\text{CH}_3 - \ddot{\text{O}} - \text{CH}_3)$ is: 2 204 Recommended Questions Water $>$ Dimethyl ether, Dimethyl ether $>$ Water... 2 Edit Delete
8024 The compound that has the highest ionic character associated with the X-Cl bond is: 2 204 Recommended Questions $PCl_5$, $BCl_3$... 2 Edit Delete
8023 Which of the following is not a perfect nonpolar molecule? 2 204 Recommended Questions $B_3N_3H_6$, $CCl_4$... 4 Edit Delete
8022 A diatomic molecule has a dipole moment of $1.2 \text{ D}$. If its bond length is equal to $10^{-10} \text{ m}$, then the fraction of an electronic charge on each atom will be: 2 204 Recommended Questions $42\%$, $52\%$... 1 Edit Delete
8021 The correct sequence of the polarity of the following molecule is a. Benzene b. Inorganic Benzene c. $\text{PCl}_3\text{F}_2$ d. $\text{PCl}_2\text{F}_3$ (Where $\text{P=polar, NP=non-polar}$) 2 204 Recommended Questions $\text{a: P, b: NP, c: NP, d: P}$, $\text{a: NP, b: NP, c: NP, d: P}$... 4 Edit Delete
8020 Molecule that has $\mu \text{ (observed)}$ greater than $\mu \text{ (theoretical)}$ is : 2 204 Recommended Questions $\text{CHCl}_3$, $\text{o-dichlorobenzene}$... 2 Edit Delete
8019 Choose the correct option for the following molecule: $\text{Cl} \text{H} \text{C} = \text{C} = \text{C} = \text{C} \text{H} \text{Cl}$ 2 204 Recommended Questions $\text{Non planar}$, $\mu \neq 0$... 4 Edit Delete
8018 A gas that should not be collected over water is- 2 204 Recommended Questions $\text{H}_2$, $\text{N}_2$... 4 Edit Delete
8017 The set of isomers of $ \text{C}_6\text{H}_4 \text{Cl}_2 $ that have an equal dipole moment with $ \text{C}_6\text{H}_5 \text{Cl} $ & $ \text{C}_6\text{H}_6 $ respectively is : 2 204 Recommended Questions Ortho and Meta, Meta and Para... 4 Edit Delete
8016 The correct order of the dipole moment of the following molecules is : 2 204 Recommended Questions I > II > III, I = II = III... 2 Edit Delete
8015 The least polar bond is present in which of the following? 2 204 Recommended Questions $ \text{O}-\text{F} $, $ \text{P}-\text{F} $... 1 Edit Delete
8014 Which of the following species has a zero dipole moment? (i) $ \text{CO}_2 $ (ii) $ \text{COCl}_2 $ (iii) $ \text{CH}_2\text{Cl}_2 $ (iv) $ \text{BCl}_3 $ 2 204 Recommended Questions (i) and (iv), (ii) and (iv)... 1 Edit Delete
8013 Which of the following is a polar molecule? 2 204 Recommended Questions $ \text{SF}_4 $, $ \text{SiF}_4 $... 1 Edit Delete
8012 The molecule among the following having the highest dipole moment is: 2 204 Recommended Questions $ \text{CO}_2 $, $ \text{HI} $... 1 Edit Delete
8011 The correct order of increasing dipole moment is : 2 204 Recommended Questions $\text{CF}_4 < \text{NH}_3 < \text{NF}_3 < \text{H}_2\text{O}$, $\text{CF}_4 < \text{NH}_3 < \text{H}_2\text{O} < \text{NF}_3$... 3 Edit Delete
8010 Which of the following is a pair of polar molecules? 2 204 Recommended Questions $\text{CO}_2 \text{ and } \text{H}_2\text{O}$, $\text{BF}_3 \text{ and } \text{PCl}_3$... 4 Edit Delete
8009 A molecule among the following with non-zero dipole moment is: 2 204 Recommended Questions $\text{C}_6 \text{Cl}_6$, $\text{C}_2 \text{Cl}_6$... 3 Edit Delete
8008 The molecule/s that will have non zero dipole moments is /are : 2 204 Recommended Questions 1,2-dichloro benzene., Cis-3-hexene.... 4 Edit Delete
8007 Non-Zero dipole moment is shown by : 2 204 Recommended Questions $\text{CO}_2$, p-Dichlorobenzene... 4 Edit Delete
8006 The correct increasing order of the polarizing power of the cationic species $\text{K}^{+}$, $\text{Ca}^{2+}$, $\text{Mg}^{2+}$, $\text{Be}^{2+}$ is: 2 204 Recommended Questions $\text{Be}^{2+} < \text{K}^{+} < \text{Ca}^{2+} < \text{Mg}^{2+}$, $\text{K}^{+} < \text{Ca}^{2+} < \text{Mg}^{2+} < \text{Be}^{2+}$... 4 Edit Delete
8005 The correct statement among the following for a compound having a higher dipole moment is- 2 204 Recommended Questions $\text{Greater will the ionic nature.}$, $\text{Lesser will be the polarity.}$... 2 Edit Delete
8004 A molecule among the following that has the maximum dipole moment is: 2 204 Recommended Questions $\text{CO}_2$, $\text{CH}_4$... 1 Edit Delete
8003 $\text{H}_2\text{O}$ has a net dipole moment while $\text{BeF}_2$ has zero dipole moment because : 2 204 Recommended Questions $\text{F is more electronegative than oxygen.}$, $\text{Be is more electronegative than oxygen.}$... 3 Edit Delete
8002 The application of dipole moment is/are : 2 204 Recommended Questions $\text{It is used to differentiate polar and non-polar bonds.}$, $\text{It is helpful in calculating the percentage ionic character of a molecule.}$... 4 Edit Delete
8001 Which of the following has a maximum 'Cl-O' bond order? 2 204 Recommended Questions $\text{ClO}_3^{-}$, $\text{ClO}_3$... 3 Edit Delete
8000 The correct order of 'S—O' bond length is: 2 204 Recommended Questions $SO_3^{2-} > SO_4^{2-} > SO_3 > SO_2$, $SO_3^{2-} > SO_4^{2-} > SO_2 > SO_3$... 2 Edit Delete
7999 $H_3PO_3$ can be represented by structures 1 and 2 shown below. These two structures cannot be taken as the canonical forms of the resonance hybrid, because : 2 204 Recommended Questions The positions of the atoms have changed., The positions of the atoms are constant.... 2 Edit Delete
7998 An incorrect statement regarding resonating structures is : 2 204 Recommended Questions The contributing structure must have the same number of unpaired electrons., The contributing structures should have similar energies.... 1 Edit Delete
7997 The most preferred structure among the following with the lowest energy for $SO_3$ is: 2 204 Recommended Questions $\begin{matrix} :\overset{..}{O} \\ =\underset{..}{S} - \overset{..}{O}: \\ :\overset{..}{O}: \end{matrix}$, $\begin{matrix} :\overset{..}{O} \\ =\underset{..}{S} - \overset{..}{O}:^{-} \\ :\overset{..}{O}:: \end{matrix}$... 3 Edit Delete
7996 $\text{The total number of possible resonance forms for the nitrate ion, } (\text{NO}_3^{-}) \text{ is:}$ 2 204 Recommended Questions $1$, $2$... 1 Edit Delete
7995 $\text{The number of }\pi \text{ bonds and } \sigma \text{ bonds in the following structure is :}$ 2 204 Recommended Questions $\text{6, 19}$, $\text{4, 20}$... 3 Edit Delete
7994 $\text{On the left are given decreasing orders of elements for a certain property and on right side is given the property. The incorrect order for the given properties is:}$ 2 204 Recommended Questions $\text{AlF}_3 > \text{MgO} > \text{MgF}_2 \text{ : Lattice energy}$, $\text{Li} > \text{Na} > \text{Al} > \text{Mg} \text{ : Electron affinity}$... 3 Edit Delete
7993 $\text{The incorrect order of lattice energy among the following set is:}$ 2 204 Recommended Questions $\text{AlF}_3 > \text{MgF}_2$, $\text{Li}_3\text{N} > \text{Li}_2\text{O}$... 3 Edit Delete
7992 $\text{Which of the following compounds has a higher hydration energy than the lattice energy?}$ 2 204 Recommended Questions $\text{BaSO}_4$, $\text{MgSO}_4$... 3 Edit Delete
7991 Compounds that have a maximum value of lattice energy among the following, is: 2 204 Recommended Questions $1.\ \text{NaF}$, $2.\ \text{NaCl}$... 2 Edit Delete
7990 A Compound with maximum ionic character is formed from: 2 204 Recommended Questions $1.\ \text{Na and I}$, $2.\ \text{Cs and F}$... 1 Edit Delete
7989 Which of the following pair of elements can form an ionic compound? 2 204 Recommended Questions $1.\ \text{Na and Ca}$, $2.\ \text{K and O}_2$... 2 Edit Delete
7988 The correct increasing order of ionic character of the following molecule is: $\text{LiF, K}_2\text{O, N}_2\text{, SO}_2\text{, ClF}_3$ 2 204 Recommended Questions $1.\ \text{N}_2 < \text{SO}_2 < \text{ClF}_3 < \text{K}_2\text{O} < \text{LiF}$, $2.\ \text{N}_2 > \text{SO}_2 > \text{ClF}_3 > \text{K}_2\text{O} < \text{LiF}$... 2 Edit Delete
7987 The favourable factors for the formation of an ionic bond would be: 2 204 Recommended Questions $1.\ \text{Low ionization enthalpy, High negative electron gain enthalpy, High lattice energy.}$, $2.\ \text{High ionization enthalpy, High electron gain enthalpy, High lattice energy.}$... 1 Edit Delete
7986 The decreasing order of ionic character of the $\text{N-H}$, $\text{F-H}$, $\text{C-H}$, and $\text{O-H}$, is : 2 204 Recommended Questions $\text{N-H} > \text{F-H} > \text{C-H} > \text{O-H}$, $\text{F-H} > \text{N-H} > \text{C-H} > \text{O-H}$... 1 Edit Delete
7985 Which of the following atomic orbitals would have the greatest overlap to form the strongest covalent bond? 2 204 Recommended Questions $2s-2s (\sigma)$, $2s-2p (\sigma)$... 4 Edit Delete
7984 The following graph captures potential energy on the y-axis for hydrogen gas formation as a function of the internuclear distance on the x-axis: The bond energy of $\text{H}_2$ can be represented by- 2 204 Recommended Questions $(c - a)$, $(b - a)$... 4 Edit Delete
7983 Among the following, the maximum covalent character is shown by which compound: 2 204 Recommended Questions $\text{MgCl}_2$, $\text{FeCl}_2$... 2 Edit Delete
7982 The correct order of covalent bond character among $\text{LiCl}$, $\text{BeCl}_2$, $\text{BCl}_3$ and $\text{CCl}_4$, is: 2 204 Recommended Questions $\text{LiCl} < \text{BeCl}_2 > \text{BCl}_3 > \text{CCl}_4$, $\text{LiCl} > \text{BeCl}_2 < \text{BCl}_3 < \text{CCl}_4$... 3 Edit Delete
7981 Most covalent compound among the following is : 2 204 Recommended Questions $\text{AlF}_3$, $\text{AlCl}_3$... 3 Edit Delete
7980 The electronic configurations of the elements $\text{A}$, $\text{B}$, and $\text{C}$ are given below. $\text{A} = 1s^2 2s^2 2p^6$ $\text{B} = 1s^2 2s^2 2p^6 3s^2 3p^3$ $\text{C} = 1s^2 2s^2 2p^6 3s^2 3p^5$ The bond between $\text{B}$ and $\text{C}$ will be : 2 204 Recommended Questions $\text{Ionic.}$, $\text{Covalent.}$... 4 Edit Delete
7979 23 2 204 Recommended Questions 1, 2... 2 Edit Delete
7978 The electronic configurations of the elements $\text{A}$, $\text{B}$, and $\text{C}$ are given below. $\text{A} = 1s^2 2s^2 2p^6$ $\text{B} = 1s^2 2s^2 2p^6 3s^2 3p^3$ $\text{C} = 1s^2 2s^2 2p^6 3s^2 3p^5$ The stable form of $\text{C}$ may be represented by the formula : 2 204 Recommended Questions $\text{C}$, $\text{C}_2$... 2 Edit Delete
7977 The electronic configurations of the elements $\text{A}$, $\text{B}$, and $\text{C}$ are given below. $\text{A} = 1s^2 2s^2 2p^6$ $\text{B} = 1s^2 2s^2 2p^6 3s^2 3p^3$ $\text{C} = 1s^2 2s^2 2p^6 3s^2 3p^5$ The stable form of $\text{A}$ may be represented by the formula: 2 204 Recommended Questions $\text{A}$, $\text{A}_2$... 1 Edit Delete
7976 If the electronic configuration of an element is $1s^2 2s^2 2p^6 3s^2 3p^6 3d^2 4s^2$, the four electrons that participate in the chemical bond formation will be from : 2 204 Recommended Questions $3p^6$, $3p^6, 4s^2$... 4 Edit Delete
7975 A compound having a metal-to-metal bond is: 2 204 Recommended Questions Cupric chloride, Stannous chloride... 3 Edit Delete
7974 The bond length can be defined as - 2 204 Recommended Questions The equilibrium distance between the nuclei of two bonded atoms in a molecule., The farthest distance between the nuclei of two bonded atoms in a molecule.... 1 Edit Delete
7973 The correct order of $\text{C} - \text{O}$ bond length among $\text{CO}$, $\text{CO}_3^{2-}$, and $\text{CO}_2$ is : 2 204 Recommended Questions $\text{CO}_2 < \text{CO}_3^{2-} < \text{CO}$, $\text{CO} < \text{CO}_3^{2-} < \text{CO}_2$... 4 Edit Delete
7972 When two atoms combine to form a molecule, energy is: 2 204 Recommended Questions Released., Absorbed.... 1 Edit Delete
7971 The number of sigma ($\sigma$) and pi ($\pi$) bonds in pent-2-en-4-yne is: 2 204 Recommended Questions $13\ \sigma$ bonds and no $\pi$ bond., $10\ \sigma$ bonds and $3\ \pi$ bonds.... 2 Edit Delete
7970 A molecule that has a complete octet is: 2 204 Recommended Questions $\text{BeCl}_2(\text{dimer})$, $\text{BeH}_2(\text{dimer})$... 4 Edit Delete
7969 Compound that is isoelectronic with an adduct of "Diborane and Ammonia" is- 2 204 Recommended Questions Hydrogen peroxide., Diborane (at absolute zero temp.).... 1 Edit Delete
7968 Which of the following species deviates from the octet rule? 2 204 Recommended Questions $\text{CO}_3^{2-}$, $\text{H}_2\text{SO}_3$... 2 Edit Delete
7967 In $\text{PO}_4^{3-}$ ion, the formal charge on the oxygen atom of the $\text{P-O}$ bond is: 2 204 Recommended Questions $+1$, $-1$... 3 Edit Delete
7966 $\text{The set of oxides of nitrogen that are paramagnetic in nature is:}$ 2 204 Recommended Questions $\text{NO}, \text{N}_2\text{O}$, $\text{N}_2\text{O}_3, \text{NO}$... 3 Edit Delete
7965 $\text{Which pair of ions from the following list do not constitute an iso-electronic pair?}$ 2 204 Recommended Questions $\text{Mn}^{2+}, \text{Fe}^{3+}$, $\text{Fe}^{2+}, \text{Mn}^{2+}$... 2 Edit Delete
7964 $\text{The significance of the octet rule is:}$ 2 204 Recommended Questions $\text{To determine the stability of atoms.}$, $\text{To find the hybridization of elements.}$... 1 Edit Delete
7963 $\text{Which of the following pairs of ions are isoelectronic and isostructural?}$ 2 204 Recommended Questions $\text{CO}_3^{2-}, \text{SO}_3^{2-}$, $\text{ClO}_3^{-}, \text{CO}_3^{2-}$... 4 Edit Delete
7962 $\text{Identify the wrong statement among the following:}$ 2 204 Recommended Questions $\text{Amongst isoelectronic species, the smaller the positive charge on the cation, the smaller the ionic radius.}$, $\text{Amongst isoelectronic species, the greater the negative charge on the anion, the larger is the ionic radius.}$... 1 Edit Delete
7961 $\text{Which among the following does not contain a set of isoelectronic species?}$ 2 204 Recommended Questions $\text{SO}_3^{2-}\text{, CO}_3^{2-}\text{, NO}_3^-$, $\text{CN}^-\text{, N}_2\text{, CO}$... 1 Edit Delete
7960 $\text{Lewis symbols for the atoms and ions: S and S}^{2-}\text{; Al and Al}^{3+}\text{; H and H}^-\text{ respectively, would be:}$ 2 204 Recommended Questions $\text{S with 6 dots around it; [S with 8 dots around it]}^{2-}\text{; Al}^{3+}\text{; Al with 1 dot; H with 1 dot; [H with 2 dots]}^-$, $\text{S with 6 dots around it; [S with 8 dots around it]}^{2-}\text{; Al with 1 dot; Al}^{3+}\text{; H with 1 dot; [H with 2 dots]}^-$... 2 Edit Delete
7959 $\text{An electron-deficient compound among the following is:}$ 2 204 Recommended Questions $\text{(SiH}_3\text{)}_2$, $\text{(BH}_3\text{)}_2$... 2 Edit Delete
7958 $\text{The correct Lewis structure of acetic acid is:}$ 2 204 Recommended Questions $\text{H} = \text{C} - \text{C} - \text{O} - \text{H}$ with lone pairs shown as dots, $\text{H} = \text{C} - \text{C} = \text{O} - \text{H}$ with lone pairs shown as dots... 3 Edit Delete
7957 $\text{The lone pairs of electrons can be defined as:}$ 2 204 Recommended Questions $\text{Electron pairs that participate in bonding.}$, $\text{Electron pairs that do not participate in bonding.}$... 2 Edit Delete
7956 $\text{The order of basic character of given oxides is:}$ 2 203 Recommended Questions $\text{Na}_2\text{O} > \text{MgO} > \text{Al}_2\text{O}_3 > \text{CuO}$, $\text{MgO} > \text{Al}_2\text{O}_3 > \text{CuO} > \text{Na}_2\text{O}$... $\text{Na}_2\text{O} > \text{MgO} > \text{Al}_2\text{O}_3 > \text{CuO}$ Edit Delete
7955 $\text{The correct order among the following options is:}$ 2 203 Recommended Questions $\text{F} > \text{N} > \text{C} > \text{Si} > \text{Ga - Non-metallic character.}$, $\text{F} > \text{Cl} > \text{O} > \text{N - Oxidising property.}$... $\text{All of the above.}$ Edit Delete
7954 $\text{Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s}^2\text{2s}^2\text{2p}^3\text{, the simplest formula for this compound is:}$ 2 203 Recommended Questions $\text{Mg}_2\text{X}_3$, $\text{MgX}_2$... $\text{Mg}_3\text{X}_2$ Edit Delete
7953 $\text{The increasing order of non-metallic character of the elements N, P, O, and S is:}$ 2 203 Recommended Questions $\text{P} < \text{S} < \text{N} < \text{O}$, $\text{O} < \text{S} < \text{N} < \text{P}$... $\text{P} < \text{S} < \text{N} < \text{O}$ Edit Delete
7952 $\text{The correct order of metallic character of elements B, Al, Mg and K is :}$ 2 203 Recommended Questions $\text{B} > \text{Al} > \text{Mg} > \text{K}$, $\text{Al} > \text{Mg} > \text{B} > \text{K}$... $\text{K} > \text{Mg} > \text{Al} > \text{B}$ Edit Delete
7951 $\text{Incorrect statement about metal is:}$ 2 203 Recommended Questions $\text{Metals can donate electrons.}$, $\text{Metals form ionic compounds.}$... $\text{Metals are more electronegative.}$ Edit Delete
7950 $\text{Percentage ionic character, if electronegativity value of X=2.1 \& Y=3.0, is :-}$ 2 203 Recommended Questions $20$, $30$... $17$ Edit Delete
7949 $\text{The statement that "the electronegativity of N on the Pauling scale is 3.0 in all the nitrogen compounds" is incorrect because:}$ 2 203 Recommended Questions $\text{Electronegativity of an element is a variable property.}$, $\text{Pauling scale is not used to measure electronegativity.}$... $\text{Electronegativity of an element is a variable property.}$ Edit Delete
7948 $\text{The incorrect order of electronegativity is :}$ 2 203 Recommended Questions $\text{Cl} > \text{S} > \text{P} > \text{Si}$, $\text{Si} > \text{Al} > \text{Mg} > \text{Na}$... $\text{None of the above.}$ Edit Delete
7947 $\text{Allred Rochow's scale is related to:}$ 2 203 Recommended Questions $\text{Electronegativity, radius, and Z}^*$, $\text{Resonance energy of the molecule, ionisation potential and electron affinity.}$... $\text{Electronegativity, radius, and Z}^*$ Edit Delete
7946 $\text{The electronegativity of the following elements increases in the order of:}$ 2 203 Recommended Questions $\text{S} < \text{P} < \text{N} < \text{O}$, $\text{P} < \text{S} < \text{N} < \text{O}$... $\text{P} < \text{S} < \text{N} < \text{O}$ Edit Delete
7945 $\text{The electronegativity of the following elements increases in the order of:}$ 2 203 Recommended Questions $\text{S} < \text{P} < \text{N} < \text{O}$, $\text{P} < \text{S} < \text{N} < \text{O}$... $\text{P} < \text{S} < \text{N} < \text{O}$ Edit Delete
7944 $\text{The basic difference between the electron gain enthalpy (E}_a\text{) and electronegativity (E}_N\text{) is:}$ 2 203 Recommended Questions $\text{E}_a \text{ is the tendency to lose electrons, while E}_N \text{ is the tendency to repel the shared pairs of electrons.}$, $\text{E}_a \text{ is the tendency to gain neutrons, while E}_N \text{ is the tendency to attract the shared pairs of electrons.}$... $\text{E}_a \text{ is the tendency to gain electrons, while E}_N \text{ is the tendency to attract the shared pairs of electrons.}$ Edit Delete
7943 $\text{The basic difference between the electron gain enthalpy (E}_a\text{) and electronegativity (E}_N\text{) is:}$ 2 203 Recommended Questions $\text{E}_a \text{ is the tendency to lose electrons, while E}_N \text{ is the tendency to repel the shared pairs of electrons.}$, $\text{E}_a \text{ is the tendency to gain neutrons, while E}_N \text{ is the tendency to attract the shared pairs of electrons.}$... $\text{E}_a \text{ is the tendency to gain electrons, while E}_N \text{ is the tendency to attract the shared pairs of electrons.}$ Edit Delete
7942 $\text{Assertion (A): Fluorine forms only one oxoacid, HOF.}$\n\n$\text{Reason (R): Fluorine has a small size and high electronegativity.}$ 2 203 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True and (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$ Edit Delete
7941 $\text{Element/Ion that has the highest electron affinity is :}$ 2 203 Recommended Questions $\text{F}^-$, $\text{O}^-$... $\text{O}$ Edit Delete
7940 $\text{Incorrect statement about characteristics regarding halogens is :}$ 2 203 Recommended Questions $\text{Ionization energy decreases with increase in atomic number.}$, $\text{Electronegativity decreases with increase in atomic number.}$... $\text{Electron affinity decreases with increase in atomic number.}$ Edit Delete
7939 $\text{Electronic configuration of four elements A, B, C and D are given below :}$\n\n$\text{A. }1s^2 2s^2 2p^6$\n\n$\text{B. }1s^2 2s^2 2p^4$\n\n$\text{C. }1s^2 2s^2 2p^6 3s^1$\n\n$\text{D. }1s^2 2s^2 2p^5$\n\n$\text{The correct order of increasing tendency to gain electron is :}$ 2 203 Recommended Questions $\text{A} < \text{C} < \text{B} < \text{D}$, $\text{A} < \text{B} < \text{C} < \text{D}$... $\text{A} < \text{C} < \text{B} < \text{D}$ Edit Delete
7938 $\text{The process that requires absorption of energy is:}$ 2 203 Recommended Questions $\text{N} \rightarrow \text{N}^-$, $\text{F} \rightarrow \text{F}^-$... $\text{N} \rightarrow \text{N}^-$ Edit Delete
7937 $\text{The group of metals having the positive value of electron gain enthalpy is:}$ 2 203 Recommended Questions $\text{Cr, Fe}$, $\text{Mn, Zn}$... $\text{Mn, Zn}$ Edit Delete
7936 $\text{Element of the third period that is expected to exhibit positive electron gain enthalpy is:}$ 2 203 Recommended Questions $\text{Na}$, $\text{Al}$... $\text{Ar}$ Edit Delete
7935 $\text{Elements}\quad\Delta H_1\quad\Delta H_2\quad\Delta_{eg}H$\n\n$\text{I}\quad\quad\quad 520\quad 7300\quad -60$\n\n$\text{II}\quad\quad\quad 419\quad 3051\quad -48$\n\n$\text{III}\quad\quad 1681\quad 3374\quad -328$\n\n$\text{IV}\quad\quad 1008\quad 1846\quad -295$\n\n$\text{V}\quad\quad 2372\quad 5251\quad +48$\n\n$\text{VI}\quad\quad\quad 738\quad 1451\quad -40$\n\n$\text{The least reactive element based on the above data is:}$ 2 203 Recommended Questions $\text{III}$, $\text{IV}$... $\text{V}$ Edit Delete
7934 $\text{An element with higher negative electron gain enthalpy in the given pair is:}\n\text{(i) O or F (ii) F or Cl}$ 2 203 Recommended Questions $\text{O, Cl}$, $\text{F, F}$... $\text{F, Cl}$ Edit Delete
7933 $\text{The correct order for electron affinity of halogens is :}$ 2 203 Recommended Questions $\text{Br} > \text{F}$, $\text{F} > \text{Cl}$... $\text{F} > \text{I}$ Edit Delete
7932 $\text{The incorrect match among the following is:}$ 2 203 Recommended Questions $\text{B} < \text{C} < \text{N} < \text{O}\text{ (increasing first ionisation enthalpy)}$, $\text{I} < \text{Br} < \text{F} < \text{Cl}\text{ (increasing electron gain enthalpy)}$... $\text{B} < \text{C} < \text{N} < \text{O}\text{ (increasing first ionisation enthalpy)}$ Edit Delete
7931 $\text{The reactivity of alkali metals increases, whereas halogen decreases down the group, because:}$ 2 203 Recommended Questions $\text{On moving down, ionization enthalpy decreases in group 1 while the electron gain enthalpy becomes less negative in group 17.}$, $\text{On moving down, ionization enthalpy increases in group 1 while the electron gain enthalpy becomes less negative in group 17.}$... $\text{On moving down, ionization enthalpy decreases in group 1 while the electron gain enthalpy becomes less negative in group 17.}$ Edit Delete
7930 $\text{The electron gain enthalpies of halogens in kJ mol}^{-1}\text{ are given below.}$ $\text{F} = -332, \text{Cl} = -349, \text{Br} = -325, \text{I} = -295.$ $\text{The lesser negative value for F as compared to that of Cl is due to:}$ 2 203 Recommended Questions $\text{Strong electron-electron repulsions in the compact 2p-subshell of F.}$, $\text{Weak electron-electron repulsions in the bigger 3p-subshell of Cl.}$... $\text{1 & 2 both}$ Edit Delete
7929 $\text{The correct order of increasing electron affinity for the elements, O, S, F and Cl is:}$ 2 203 Recommended Questions $\text{Cl} < \text{F} < \text{O} < \text{S}$, $\text{O} < \text{S} < \text{F} < \text{Cl}$... $\text{O} < \text{S} < \text{F} < \text{Cl}$ Edit Delete
7928 $\text{The correct order of increasing electron gain enthalpy with a negative sign for the elements O, S, F, and Cl is :}$ 2 203 Recommended Questions $\text{Cl} < \text{F} < \text{S} < \text{O}$, $\text{O} < \text{S} < \text{F} < \text{Cl}$... $\text{O} < \text{S} < \text{F} < \text{Cl}$ Edit Delete
7927 $\text{The formation of the oxide ion O}^{2-}\text{(g), from the oxygen atom requires first an exothermic and then an endothermic step as shown below,}$ $\text{O(g) + e}^- \rightarrow \text{O}^-; \Delta_f H^0 = -141 \text{ kJ mol}^{-1}$ $\text{O}^-\text{(g) + e}^- \rightarrow \text{O}^{2-}\text{(g)}; \Delta_f H^0 = +780 \text{ kJ mol}^{-1}$ $\text{Thus, the process of formation of O}^{2-}\text{ in the gas phase is unfavorable even though O}^{2-}\text{ is isoelectronic with neon. It is due to the fact that:}$ 2 203 Recommended Questions $\text{Electron repulsion outweighs the stability gained by achieving noble gas configuration.}$, $\text{O}^-\text{ ion has a comparatively smaller size than the oxygen atom.}$... $\text{Electron repulsion outweighs the stability gained by achieving noble gas configuration.}$ Edit Delete
7926 $\text{Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy) is:}$ 2 203 Recommended Questions $\text{F} > \text{Cl} > \text{Br} > \text{I}$, $\text{F} < \text{Cl} < \text{Br} < \text{I}$... $\text{F} < \text{Cl} > \text{Br} > \text{I}$ Edit Delete
7925 $\text{The atomic species that has the maximum ionization energy is :}$ 2 203 Recommended Questions $\text{O}^-$, $\text{S}^-$... $\text{S}^-$ Edit Delete
7924 $\text{1st }(\Delta H_1)\text{ and 2nd }(\Delta H_2)\text{ Ionization Enthalpies (in kJ mol}^{-1})\text{ and the }(\Delta_{eg}H)\text{ Electron Gain Enthalpy (in kJ mol}^{-1})\text{ of a few elements are given below:}$ $\begin{array}{|c|c|c|c|} \hline \text{Elements} & \Delta H_1 & \Delta H_2 & \Delta_{eg}H \\ \hline \text{I} & 520 & 7300 & -60 \\ \text{II} & 419 & 3051 & -48 \\ \text{III} & 1681 & 3374 & -328 \\ \text{IV} & 1008 & 1846 & -295 \\ \text{V} & 2372 & 5251 & +48 \\ \text{VI} & 738 & 1451 & -40 \\ \hline \end{array}$ $\text{The most reactive metal is:}$ 2 203 Recommended Questions $\text{VI}$, $\text{III}$... $\text{II}$ Edit Delete
7923 $\text{The element having very high electron affinity but zero ionisation enthalpy is:}$ 2 203 Recommended Questions $\text{He (due to inert gas configuration)}$, $\text{Be (due to fully filled subshell)}$... $\text{None of the above}$ Edit Delete
7922 $\text{First three ionisation energies (in kJ/mol) of three representative elements are given below:}$ $\begin{array}{|c|c|c|c|} \hline \text{Element} & IE_1 & IE_2 & IE_3 \\ \hline \text{P} & 495.8 & 4562 & 6910 \\ \text{Q} & 737.7 & 1451 & 7733 \\ \text{R} & 577.5 & 1817 & 2745 \\ \hline \end{array}$ $\text{Then incorrect option is :}$ 2 203 Recommended Questions $\text{Q: Alkaline earth metal.}$, $\text{P: Alkali metal.}$... $\text{R: s-block element.}$ Edit Delete
7921 $\text{If the ionization enthalpy and negative electron gain enthalpy of an element are 275 and 86 kcal mol}^{-1} \text{ respectively, then the electronegativity of the element on the Pauling scale is:}$ 2 203 Recommended Questions $2.8$, $0.0$... $2.8$ Edit Delete
7920 $\text{The energy of an electron in the ground state of the hydrogen atom is } -2.18 \times 10^{-18} \text{ J. The ionization enthalpy of atomic hydrogen in terms of J mol}^{-1} \text{ is:}$ 2 203 Recommended Questions $2.81 \times 10^6 \text{ J mol}^{-1}$, $1.31 \times 10^6 \text{ J mol}^{-1}$... $1.31 \times 10^6 \text{ J mol}^{-1}$ Edit Delete
7919 $\text{The correct graph depicting ionization energies for } 2^{\text{nd}} \text{ period elements is:}$ 2 203 Recommended Questions $\text{Graph 1: Shows smooth increasing trend with slight dip at B, then continues increasing to Ne}$, $\text{Graph 2: Shows increasing trend with dip at B and another dip at O, then increases to Ne}$... $\text{Graph 3: Shows increasing trend with dip at B and peak at N higher than O, then increases to Ne}$ Edit Delete
7918 $\text{In the following graph of variation of ionization energy with atomic number, X, Y, and Z represent elements.}$\n\n$\text{[Graph shows ionization energy vs atomic number with peaks labeled X (~2300 kJ/mol), Y (~1300 kJ/mol), and Z (~1000 kJ/mol) representing the highest points in their respective periods]}$\n\n$\text{The group number of X, Y, and Z elements is:}$ 2 203 Recommended Questions $1^{\text{st}} \text{ group}$, $15^{\text{th}} \text{ group}$... $18^{\text{th}} \text{ group}$ Edit Delete
7917 Element that has the greatest tendency to lose an electron is : 2 203 Recommended Questions $\text{F}$, $\text{Fr}$... $\text{Fr}$ Edit Delete
7916 The first ionisation enthalpies of $\text{Na, Mg, Al,}$ and $\text{Si}$ are in the order of: 2 203 Recommended Questions $\text{Na} < \text{Al} < \text{Mg} < \text{Si}$, $\text{Na} > \text{Mg} > \text{Al} > \text{Si}$... $\text{Na} < \text{Al} < \text{Mg} < \text{Si}$ Edit Delete
7915 The correct order of ionization energy of $\text{W, X, Y}$ and $\text{Z}$ is- 2 203 Recommended Questions $\text{W} > \text{X} > \text{Y} > \text{Z}$, $\text{W} < \text{X} < \text{Y} > \text{Z}$... $\text{W} < \text{X} > \text{Y} < \text{Z}$ Edit Delete
7914 The values of the first ionization enthalpies for two isotopes would be: 2 203 Recommended Questions Same., Different.... Same. Edit Delete
7913 Amongst the following electronic configurations, the highest ionization energy is represented by: 2 203 Recommended Questions $[\text{Ne}]3s^23p^3$, $[\text{Ne}]3s^23p^2$... $[\text{Ne}]3s^23p^3$ Edit Delete
7912 For the second-period elements, the correct increasing order of first ionisation enthalpy is: 2 203 Recommended Questions $\text{Li} < \text{Be} < \text{B} < \text{C} < \text{O} < \text{N} < \text{F} < \text{Ne}$, $\text{Li} < \text{Be} < \text{B} < \text{C} < \text{N} < \text{O} < \text{F} < \text{Ne}$... $\text{Li} < \text{B} < \text{Be} < \text{C} < \text{O} < \text{N} < \text{F} < \text{Ne}$ Edit Delete
7911 The incorrect statement about ionization enthalpy is: 2 203 Recommended Questions Ionization enthalpy increases for each successive electron., Noble gases have the highest ionization enthalpy.... Ionization enthalpy of oxygen is higher than that of nitrogen. Edit Delete
7910 $\text{IP}_1$ and $\text{IP}_2$ for $\text{Mg}$ are $178 \text{ Kcal mol}^{-1}$ and $348 \text{ Kcal mol}^{-1}$, respectively. The energy required for the reaction, $\text{Mg} \rightarrow \text{Mg}^{2+} + 2e^{-}$ will be: 2 203 Recommended Questions $+170 \text{ Kcal mol}^{-1}$, $+526 \text{ Kcal mol}^{-1}$... $+526 \text{ Kcal mol}^{-1}$ Edit Delete
7909 Abnormally high ionization enthalpy of $\text{B}$ as depicted in the graph below can be due to : 2 203 Recommended Questions Completely filled $2p$ subshell., Completely filled $2s$ subshell.... Completely filled $2s$ subshell. Edit Delete
7908 $\text{A configuration with the lowest ionization enthalpy among the following is:}$ 2 203 Recommended Questions $1s^2 2s^2 2p^5$, $1s^2 2s^2 2p^3$... $1s^2 2s^2 2p^6 3s^1$ Edit Delete
7907 $\text{The graph between ionization energy and atomic number for the first group elements is shown below:}$\n\n$\text{[Graph shows points: Li (~525 kJ/mol), X (~495 kJ/mol), Y (~420 kJ/mol), Z (~400 kJ/mol), and Cs (~375 kJ/mol) with decreasing ionization energy as atomic number increases]}$\n\n$\text{The element represented by Y in the graph above is -}$ 2 203 Recommended Questions $\text{Cs}$, $\text{Rb}$... $\text{K}$ Edit Delete
7906 $\text{Boron has lesser ionization enthalpy than Beryllium, because:}$ 2 203 Recommended Questions $\text{It is easier to remove electrons from p - a subshell than a filled s - subshell.}$, $\text{The s-electron can be removed easier than the p-electron.}$... $\text{It is easier to remove electrons from p - a subshell than a filled s - subshell.}$ Edit Delete
7905 $\text{The first ionization enthalpy values (in kJ mol}^{-1}\text{) of group 13 elements are:}$\n\n$\text{B} \quad \text{Al} \quad \text{Ga} \quad \text{In} \quad \text{Tl}$\n\n$801 \quad 577 \quad 579 \quad 558 \quad 589$\n\n$\text{The explanation for the deviation from the general trend can be -}$ 2 203 Recommended Questions $\text{Ga has lower ionization enthalpy than Al.}$, $\text{Ga has higher ionization enthalpy than Al.}$... $\text{Ga has higher ionization enthalpy than Al.}$ Edit Delete
7904 $\text{The radius of which ion is closest to that of } \text{Li}^+ \text{ ion?}$ 2 203 Recommended Questions $\text{Na}^+$, $\text{Be}^{2+}$... $\text{Mg}^{2+}$ Edit Delete
7903 $\text{Consider the following curve showing atomic radius vs atomic number. X represents group with highest atomic radius. The element that belongs to Y group can be:}$ 2 203 Recommended Questions $\text{Na}$, $\text{Mg}$... $\text{Br}$ Edit Delete
7902 $\text{The correct sequence of increasing order of density is:}$ 2 203 Recommended Questions $\text{Li} < \text{K} < \text{Na} < \text{Rb} < \text{Cs}$, $\text{Li} < \text{Na} < \text{K} < \text{Rb} < \text{Cs}$... $\text{Li} < \text{K} < \text{Na} < \text{Rb} < \text{Cs}$ Edit Delete
7901 $\text{Given below are four orders for the size of the species. Choose the correct ones:}$ $\text{(a) Al}^{3+} < \text{Mg}^{2+} < \text{Na}^+ < \text{F}^-$ $\text{(b) Al}^{3+} < \text{Mg}^{2+} < \text{Li}^+ < \text{K}^+$ $\text{(c) Fe}^{4+} < \text{Fe}^{3+} < \text{Fe}^{2+} < \text{Fe}$ $\text{(d) Mg} > \text{Al} > \text{Si} > \text{P}$ 2 203 Recommended Questions $\text{(a), (b) & (c)}$, $\text{(b), (c) & (d)}$... $\text{(a), (b), (c) & (d)}$ Edit Delete
7900 $\text{Isoelectronic pair, among the following, is:}$ 2 203 Recommended Questions $\text{ClO}_2^-, \text{ClF}_2^+$, $\text{IF}_2^-, \text{I}_3^-$... $\text{ClO}_2^-, \text{ClF}_2^+$ Edit Delete
7899 $\text{The size of isoelectronic species: F}^-, \text{Ne and Na}^+, \text{ is affected by:}$ 2 203 Recommended Questions $\text{Nuclear charge (Z)}$, $\text{Valence principal quantum number (n)}$... $\text{Nuclear charge (Z)}$ Edit Delete
7898 $\text{The trend of atomic radius in a period and a group is:}$ 2 203 Recommended Questions $\text{Generally decreases from right to left across a period and increases down a group.}$, $\text{Generally increases from left to right across a period and decreases down a group.}$... $\text{Generally decreases from left to right across a period and increases down a group.}$ Edit Delete
7897 $\text{The correctly matched option is:}$ 2 203 Recommended Questions $\text{Fe}^{3+} > \text{Fe}^{2+} > \text{Fe}^+ \text{ : Order of atomic radius}$, $\text{O} > \text{C} > \text{B} > \text{N} \text{ : Order of ionisation energy}$... $\text{O}^{2-} < \text{O}^- < \text{O} < \text{O}^+ \text{ : Increasing order of } Z_{\text{eff}}$ Edit Delete
7896 $\text{The ionic radius indicates the distance between the nucleus and:}$ 2 203 Recommended Questions $\text{Outermost shell of an atom.}$, $\text{Outermost shell of an ion.}$... $\text{Outermost shell of an ion.}$ Edit Delete
7895 $\text{The correct order of ionic radii is:}$ 2 203 Recommended Questions $\text{H}^- > \text{H}^+ > \text{H}$, $\text{Na}^+ > \text{F}^- > \text{O}^{2-}$... $\text{N}^{3-} > \text{Mg}^{2+} > \text{Al}^{3+}$ Edit Delete
7894 $\text{Increasing order of ionic radii and decreasing order of number of protons of the given isoelectronic species is:}$ 2 203 Recommended Questions $\text{Ca}^{2+}, \text{K}^+, \text{Cl}^-, \text{S}^{2-}$, $\text{Cl}^-, \text{Ca}^{2+}, \text{K}^+, \text{S}^{2-}$... $\text{Ca}^{2+}, \text{K}^+, \text{Cl}^-, \text{S}^{2-}$ Edit Delete
7893 $\text{A common trend in both groups I and II elements in the periodic table, as the atomic number increases, is:}$ 2 203 Recommended Questions $\text{Oxidizing power increases}$, $\text{Atomic radius increases}$... $\text{Atomic radius increases}$ Edit Delete
7892 $\text{In alkaline earth metals, the properties, from the following, that will increase from Be to Ba are:}$ $\text{(i) Atomic radius}$ $\text{(ii) Ionisation energy}$ $\text{(iii) Nuclear charge}$ 2 203 Recommended Questions $\text{(i) and (ii)}$, $\text{(i) and (iii)}$... $\text{(i) and (iii)}$ Edit Delete
7891 $\text{The correct sequence of increasing radii is:}$ 2 203 Recommended Questions $\text{Ar} < \text{K}^+ < \text{Ca}^{2+}$, $\text{Ca}^{2+} < \text{Ar} < \text{K}^+$... $\text{Ca}^{2+} < \text{K}^+ < \text{Ar}$ Edit Delete
7890 $\text{Among the following species, the smallest ion is:}$ 2 203 Recommended Questions $\text{Na}^+$, $\text{F}^-$... $\text{Na}^+$ Edit Delete
7889 $\text{Match the following isoelectronic species in Column I and Column II:}$ $\text{Column I: (i) F}^- \text{, (ii) Ar, (iii) Mg, (iv) Rb}^+$ $\text{Column II: (a) Br}^- \text{, (b) Si}^{2+} \text{, (c) O}^{2-} \text{, (d) S}^{2-}$ 2 203 Recommended Questions $\text{(i) b, (ii) c, (iii) a, (iv) d}$, $\text{(i) c, (ii) b, (iii) a, (iv) d}$... $\text{(i) c, (ii) d, (iii) b, (iv) a}$ Edit Delete
7888 $\text{The correct order of the decreasing ionic radii among the following isoelectronic species is:}$ 2 203 Recommended Questions $\text{Ca}^{2+} > \text{K}^+ > \text{S}^{2-} > \text{Cl}^-$, $\text{Cl}^- > \text{S}^{2-} > \text{Ca}^{2+} > \text{K}^+$... $\text{S}^{2-} > \text{Cl}^- > \text{K}^+ > \text{Ca}^{2+}$ Edit Delete
7887 $\text{The correct statement about the radius of a species is:}$ 2 203 Recommended Questions $\text{Radius increases during cation and anion formation.}$, $\text{Radius increases during anion formation and decreases during cation formation.}$... $\text{Radius increases during anion formation and decreases during cation formation.}$ Edit Delete
7886 $\text{The correct order of size of the given species is:}$ 2 203 Recommended Questions $\text{I} > \text{I}^- > \text{I}^+$, $\text{I}^+ > \text{I}^- > \text{I}$... $\text{I}^- > \text{I} > \text{I}^+$ Edit Delete
7885 $\text{The screening effect of 'd' electrons is:}$ 2 203 Recommended Questions $\text{Much less than s-electrons.}$, $\text{Much more than s-electrons.}$... $\text{Much less than s-electrons.}$ Edit Delete
7884 $\text{The order of screening effect of electrons of s, p, d and f orbitals of a given shell of an atom on electrons in its outer shell is:}$ 2 203 Recommended Questions $\text{s} > \text{p} > \text{d} > \text{f}$, $\text{f} > \text{d} > \text{p} > \text{s}$... $\text{s} > \text{p} > \text{d} > \text{f}$ Edit Delete
7883 $\text{The most common oxidation state of cerium (Ce) is:}$ 2 203 Recommended Questions $+5, +3$, $+5, +4$... $+3, +4$ Edit Delete
7882 $\text{The statement that is incorrect for the periodic classification of elements is:}$ 2 203 Recommended Questions $\text{The properties of elements are a periodic function of their atomic number.}$, $\text{Non-metallic elements are lesser in number than metallic elements.}$... $\text{For transition elements, the d-subshells are filled with electrons monotonically with an increase in atomic number.}$ Edit Delete
7881 $\text{The incorrect match among the following options is:}$ 2 203 Recommended Questions $[\text{Ar}]3\text{d}^5 4\text{s}^1 \rightarrow 4^{\text{th}} \text{period}, 6^{\text{th}} \text{group}$, $[\text{Kr}]4\text{d}^{10} \rightarrow 5^{\text{th}} \text{period}, 12^{\text{th}} \text{group}$... $[\text{Kr}]4\text{d}^{10} \rightarrow 5^{\text{th}} \text{period}, 12^{\text{th}} \text{group}$ Edit Delete
7880 $\text{The electronic configuration of the most electropositive element is:}$ 2 203 Recommended Questions $[\text{He}]2\text{s}^1$, $[\text{Xe}]6\text{s}^1$... $[\text{Xe}]6\text{s}^1$ Edit Delete
7879 $\text{The electronic configuration of Palladium is:}$ 2 203 Recommended Questions $[\text{Kr}] 5\text{f}^3 6\text{d}^1 7\text{s}^2$, $[\text{Kr}] 5\text{f}^5 6\text{d}^1 7\text{s}^2$... $\text{None of the above.}$ Edit Delete
7878 $\text{The factor that does not affect the valence electron is:}$ 2 203 Recommended Questions $\text{Azimuthal quantum number}$, $\text{Nuclear charge (Z)}$... $\text{Nuclear mass}$ Edit Delete
7877 $\text{Element}$ $_{58}\text{Ce}$ $\text{belongs to:}$ 2 203 Recommended Questions $\text{s-block elements}$, $\text{p-block elements}$... $\text{f-block elements}$ Edit Delete
7876 $\text{Among the following, the most characteristic oxidation states for lead and tin are, respectively:}$ 2 203 Recommended Questions $+4, +2$, $+2, +4$... $+2, +4$ Edit Delete
7875 $\text{Consider the following electronic configuration of an element (P):}$\n\n$[\text{Xe}]4\text{f}^{14}5\text{d}^16\text{s}^2$\n\n$\text{The correct statement about element 'P' is:}$ 2 203 Recommended Questions $\text{It belongs to the 6th period and the 1st group.}$, $\text{It belongs to the 6th period and the 2nd group.}$... $\text{It belongs to the 6th period and the 3rd group.}$ Edit Delete
7874 $\text{The electronic configuration of chalcogens in their outermost shell is:}$ 2 203 Recommended Questions $\text{ns}^2 \text{np}^3$, $\text{ns}^2 \text{np}^4$... $\text{ns}^2 \text{np}^4$ Edit Delete
7873 $\text{The position of elements with an outer electronic configuration as}$ $(\text{n} - 2) \text{f}^7 (\text{n} - 1) \text{d}^1 \text{ns}^2$, $\text{n} = 6$ $\text{:}$ 2 203 Recommended Questions $6^{\text{th}} \text{period and } 10^{\text{th}} \text{group.}$, $7^{\text{th}} \text{period and } 3^{\text{rd}} \text{group.}$... $6^{\text{th}} \text{period and } 3^{\text{rd}} \text{group.}$ Edit Delete
7872 $\text{The general outer electronic configuration of s, p, d, and f-block elements respectively would be:}$ 2 203 Recommended Questions $\text{ns}^{1-2}, \text{nd}^2\text{np}^{1-6}, (\text{n}-1)\text{d}^{1-10}\text{np}^{0-2}, (\text{n}-2)\text{f}^{1-14}(\text{n}-1)\text{d}^{0-10}\text{ns}^2$, $\text{ns}^{1-2}, \text{ns}^2\text{np}^{1-6}, (\text{n}-1)\text{f}^{1-10}\text{ns}^{0-2}, (\text{n}-2)\text{g}^{1-14}(\text{n}-1)\text{d}^{0-1}\text{ns}^2$... $\text{ns}^{1-2}, \text{ns}^2\text{np}^{1-6}, (\text{n}-1)\text{d}^{1-10}\text{ns}^{1-2}, (\text{n}-2)\text{f}^{1-14}(\text{n}-1)\text{d}^{0-1} \text{ns}^2$ Edit Delete
7871 $\text{The electronic configuration that represents the d-block element is:}$ 2 203 Recommended Questions $1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6 3\text{d}^{10} 4\text{s}^2 4\text{p}^6$, $1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6 3\text{d}^{10} 4\text{s}^2 4\text{p}^1$... $1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6 3\text{d}^{10} 4\text{s}^2$ Edit Delete
7870 $\text{The pair that has both members from the same period of the Periodic Table is}$ 2 203 Recommended Questions $\text{Cl, Br}$, $\text{Ca, Cl}$... $\text{Na, Cl}$ Edit Delete
7869 $\text{Sodium generally does not show an oxidation state of +2, because of:}$ 2 203 Recommended Questions $\text{High first ionization potential.}$, $\text{High second ionization potential.}$... $\text{High second ionization potential.}$ Edit Delete
7868 $\text{The outermost electronic configuration of the most electronegative element is:}$ 2 203 Recommended Questions $\text{ns}^2, \text{np}^3$, $\text{ns}^2, \text{np}^6\text{n} - 1\text{d}^5$... $\text{ns}^2, \text{np}^5$ Edit Delete
7867 $\text{Elements with an electronic configuration}$ $1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6 3\text{d}^{10} 4\text{s}^2 4\text{p}^6 4\text{d}^{10} 5\text{s}^2 5\text{p}^3$ $\text{belong to the group:}$ 2 203 Recommended Questions $3^{\text{rd}}$, $15^{\text{th}}$... $15^{\text{th}}$ Edit Delete
7866 $\text{The period and group number of the element with Z = 114 are:}$ 2 203 Recommended Questions $\text{8th period and 16th group}$, $\text{7th period and 14th group}$... $\text{7th period and 14th group}$ Edit Delete
7865 $\text{The maximum number of elements that can be accommodated in the sixth period are:}$ 2 203 Recommended Questions $8$, $18$... $32$ Edit Delete
7864 $\text{Match Column I with Column II.}$\n\n$\text{Column-I}$\n$\text{(a) Copper}$\n$\text{(b) Fluorine}$\n$\text{(c) Silicon}$\n$\text{(d) Cerium}$\n\n$\text{Column-II}$\n$\text{(i) Non-metal}$\n$\text{(ii) Transition metal}$\n$\text{(iii) Lanthanoid}$\n$\text{(iv) Metalloid}$ 2 203 Recommended Questions $\text{(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)}$, $\text{(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)}$... $\text{(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)}$ Edit Delete
7863 $\text{The lightest metal in the periodic table is:}$ 2 203 Recommended Questions $\text{H}$, $\text{Mg}$... $\text{Li}$ Edit Delete
7862 $\text{Which among the following elements is the bridge element?}$ 2 203 Recommended Questions $\text{K}$, $\text{O}$... $\text{Mg}$ Edit Delete
7861 $\text{Considering the elements B, C, N, F, and Si; the correct order of their non-}$ $\text{metallic character is :}$ 2 203 Recommended Questions $\text{B} > \text{C} > \text{Si} > \text{N} > \text{F}$, $\text{Si} > \text{C} > \text{B} > \text{N} > \text{F}$... $\text{F} > \text{N} > \text{C} > \text{B} > \text{Si}$ Edit Delete
7860 $\text{The formula of the stable binary compounds that would be formed by an}$ $\text{element having atomic number 71 and fluorine:}$ 2 203 Recommended Questions $\text{LuF}_6$, $\text{LuF}_2$... $\text{LuF}_3$ Edit Delete
7859 $\text{The group number that has non-metal, liquid as well as gas at room temperature is:}$ 2 203 Recommended Questions $15$, $14$... $17$ Edit Delete
7858 $\text{The total number of 3rd period elements with more than one electron in a 3d orbital is:}$ 2 203 Recommended Questions $9$, $11$... $0$ Edit Delete
7857 $\text{Identify the INCORRECT match.}$ 2 203 Recommended Questions $\text{(b)- (ii)}$, $\text{(c)- (iii)}$... $\text{(d) -(iv)}$ Edit Delete
7856 $\text{The correct statement among the following regarding the element Unununium " is:}$ 2 203 Recommended Questions $\text{It is an inner transition element.}$, $\text{It belongs to the 8th period in the periodic table.}$... $\text{It is a transition element.}$ Edit Delete
7855 $\text{Elements of group IB is called as:}$ 2 203 Recommended Questions $\text{Normal elements.}$, $\text{Transition elements.}$... $\text{Transition elements.}$ Edit Delete
7854 $\text{The period number and group number of "Tantalum" (Z=73) are respectively :}$ 2 203 Recommended Questions $5, 7$, $6, 13$... $6, 5$ Edit Delete
7853 $\text{Which among the following is not a representative element?}$ 2 203 Recommended Questions $\text{Tellurium}$, $\text{Tantalum}$... $\text{Tantalum}$ Edit Delete
7852 $\text{An element whose IUPAC name is Ununtrium (Uut) belongs to:}$ 2 203 Recommended Questions $\text{s-Block elements}$, $\text{p-Block elements}$... $\text{p-Block elements}$ Edit Delete
7851 $\text{Which among the following options is a nonmetal?}$ 2 203 Recommended Questions $\text{Gold}$, $\text{Mercury}$... $\text{Selenium}$ Edit Delete
7850 $\text{The most non-metallic element among the given elements is}$ 2 203 Recommended Questions $\text{Be}$, $\text{B}$... $\text{B}$ Edit Delete
7849 $\text{The elements in which electrons are progressively filled in 4f-orbitals are called:}$ 2 203 Recommended Questions $\text{Actinoids}$, $\text{Transition elements}$... $\text{Lanthanoids}$ Edit Delete
7848 $\text{The following property/ies decrease from left to right across the periodic table and increase from top to bottom:}$ $\text{(i) Atomic radius (ii) Electronegativity (iii) Ionisation energy (iv) Metallic character}$ 2 203 Recommended Questions $\text{(i) only}$, $\text{(i), (ii), and (iii)}$... $\text{(i), and (iv)}$ Edit Delete
7847 $\text{Which of the following exhibits variable oxidation states?}$ 2 203 Recommended Questions $\text{Na}$, $\text{Cu}$... $\text{Cu}$ Edit Delete
7846 $\text{Correct statement regarding transuranic elements is:}$ 2 203 Recommended Questions $\text{They have higher atomic number than uranium.}$, $\text{They are lighter than uranium.}$... $\text{They have higher atomic number than uranium.}$ Edit Delete
7845 $\text{The elements with atomic numbers 35, 53, and 85 are:}$ 2 203 Recommended Questions $\text{Noble gases}$, $\text{Halogens}$... $\text{Halogens}$ Edit Delete
7844 $\text{Among the following elements, identify the one that is not an actinoid:}$ 2 203 Recommended Questions $\text{Curium (Z = 96)}$, $\text{Californium (Z = 98)}$... $\text{Terbium (Z = 65)}$ Edit Delete
7843 $\text{The outermost electronic configuration of the last element of the p-block in the 6th period is represented by:}$ 2 203 Recommended Questions $7\text{s}^2 7\text{p}^6$, $5\text{f}^{14} 6\text{d}^{10} 7\text{s}^2 7\text{p}^0$... $4\text{f}^{14} 5\text{d}^{10} 6\text{s}^2 6\text{p}^6$ Edit Delete
7842 $\text{Among the following elements whose atomic numbers are given below, which cannot be accommodated in the present set up of the long periodic table?}$ 2 203 Recommended Questions $107$, $118$... $126$ Edit Delete
7841 $\text{The period number in the long form of the periodic table is equal to:}$ 2 203 Recommended Questions $\text{Magnetic quantum number of any element of the period.}$, $\text{Atomic number of any element of the period.}$... $\text{Maximum principal quantum number of any element of the period.}$ Edit Delete
7840 $\text{The element named after Lawrence Berkeley Laboratory is:}$ 2 203 Recommended Questions $\text{Seaborgium}$, $\text{Lawrencium}$... $\text{Lawrencium}$ Edit Delete
7839 $\text{All the non-metals in the long form of the periodic table are placed under:}$ 2 203 Recommended Questions $s\text{-Block}$, $p\text{-Block}$... $p\text{-Block}$ Edit Delete
7838 $\text{An example of metalloid elements in the periodic table is:}$ 2 203 Recommended Questions $\text{Na and K}$, $\text{Cu and Al}$... $\text{As and Si}$ Edit Delete
7837 $\text{Eka aluminium and Eka silicon are now known as:}$ 2 203 Recommended Questions $\text{Ga and Ge}$, $\text{Al and Si}$... $\text{Ga and Ge}$ Edit Delete
7836 $\text{Those in a group that falls under the law of triads include:}$ 2 203 Recommended Questions $\text{Cl, Br, I}$, $\text{C, N, O}$... $\text{Cl, Br, I}$ Edit Delete
7835 $\text{The basic theme of the periodic table is:}$ 2 203 Recommended Questions $\text{To classify the elements in a period according to their properties.}$, $\text{To classify the elements in a group according to their ionization enthalpy.}$... $\text{To classify the elements in periods and groups according to their properties.}$ Edit Delete
7834 $\text{The formula for the oxide formed by Eka-aluminum is:}$ 2 203 Recommended Questions $\text{EO}_4$, $\text{E}_2\text{O}_3$... $\text{E}_2\text{O}_3$ Edit Delete
7833 $\text{The basic difference between Mendeleev's Periodic Law (A) and Modern Periodic Law (B) is:}$ 2 203 Recommended Questions $\text{A is based on atomic weights while B is based on atomic numbers.}$, $\text{B is based on atomic weights while A is based on atomic numbers.}$... $\text{A is based on atomic weights while B is based on atomic numbers.}$ Edit Delete
7832 124 2 203 Recommended Questions 1, 2... 1 Edit Delete
7831 123 2 203 Recommended Questions 1, 2... 4 Edit Delete
7830 122 2 203 Recommended Questions 1, 2... 4 Edit Delete
7829 121 2 203 Recommended Questions 1, 2... 1 Edit Delete
7828 120 2 203 Recommended Questions 1, 2... 4 Edit Delete
7827 119 2 203 Recommended Questions 1, 2... 3 Edit Delete
7826 118 2 203 Recommended Questions 1, 2... 3 Edit Delete
7825 117 2 203 Recommended Questions 1, 2... 1 Edit Delete
7824 116 2 203 Recommended Questions 1, 2... 4 Edit Delete
7823 115 2 203 Recommended Questions 1, 2... 1 Edit Delete
7822 114 2 203 Recommended Questions 1, 2... 2 Edit Delete
7821 113 2 203 Recommended Questions 1, 2... 2 Edit Delete
7820 112 2 203 Recommended Questions 1, 2... 4 Edit Delete
7819 111 2 203 Recommended Questions 1, 2... 4 Edit Delete
7818 110 2 203 Recommended Questions 1, 2... 1 Edit Delete
7817 109 2 203 Recommended Questions 1, 2... 3 Edit Delete
7816 108 2 203 Recommended Questions 1, 2... 3 Edit Delete
7815 107 2 203 Recommended Questions 1, 2... 1 Edit Delete
7814 106 2 203 Recommended Questions 1, 2... 1 Edit Delete
7813 105 2 203 Recommended Questions 1, 2... 2 Edit Delete
7812 104 2 203 Recommended Questions 1, 2... 4 Edit Delete
7811 103 2 203 Recommended Questions 1, 2... 4 Edit Delete
7810 102 2 203 Recommended Questions 1, 2... 4 Edit Delete
7809 101 2 203 Recommended Questions 1, 2... 4 Edit Delete
7808 100 2 203 Recommended Questions 1, 2... 1 Edit Delete
7807 99 2 203 Recommended Questions 1, 2... 1 Edit Delete
7806 98 2 203 Recommended Questions 1, 2... 4 Edit Delete
7805 97 2 203 Recommended Questions 1, 2... 2 Edit Delete
7804 96 2 203 Recommended Questions 1, 2... 1 Edit Delete
7803 95 2 203 Recommended Questions 1, 2... 1 Edit Delete
7802 94 2 203 Recommended Questions 1, 2... 3 Edit Delete
7801 93 2 203 Recommended Questions 1, 2... 2 Edit Delete
7800 92 2 203 Recommended Questions 1, 2... 4 Edit Delete
7799 91 2 203 Recommended Questions 1, 2... 4 Edit Delete
7798 90 2 203 Recommended Questions 1, 2... 3 Edit Delete
7797 89 2 203 Recommended Questions 1, 2... 1 Edit Delete
7796 88 2 203 Recommended Questions 1, 2... 2 Edit Delete
7795 87 2 203 Recommended Questions 1, 2... 3 Edit Delete
7794 86 2 203 Recommended Questions 1, 2... 4 Edit Delete
7793 85 2 203 Recommended Questions 1, 2... 2 Edit Delete
7792 84 2 203 Recommended Questions 1, 2... 1 Edit Delete
7791 83 2 203 Recommended Questions 1, 2... 3 Edit Delete
7790 82 2 203 Recommended Questions 1, 2... 1 Edit Delete
7789 81 2 203 Recommended Questions 1, 2... 1 Edit Delete
7788 80 2 203 Recommended Questions 1, 2... 3 Edit Delete
7787 79 2 203 Recommended Questions 1, 2... 4 Edit Delete
7786 78 2 203 Recommended Questions 1, 2... 2 Edit Delete
7785 77 2 203 Recommended Questions 1, 2... 2 Edit Delete
7784 76 2 203 Recommended Questions 1, 2... 3 Edit Delete
7783 75 2 203 Recommended Questions 1, 2... 4 Edit Delete
7782 74 2 203 Recommended Questions 1, 2... 1 Edit Delete
7781 73 2 203 Recommended Questions 1, 2... 2 Edit Delete
7780 72 2 203 Recommended Questions 1, 2... 3 Edit Delete
7779 71 2 203 Recommended Questions 1, 2... 3 Edit Delete
7778 70 2 203 Recommended Questions 1, 2... 1 Edit Delete
7777 69 2 203 Recommended Questions 1, 2... 4 Edit Delete
7776 68 2 203 Recommended Questions 1, 2... 1 Edit Delete
7775 67 2 203 Recommended Questions 1, 2... 1 Edit Delete
7774 66 2 203 Recommended Questions 1, 2... 3 Edit Delete
7773 65 2 203 Recommended Questions 1, 2... 3 Edit Delete
7772 64 2 203 Recommended Questions 1, 2... 2 Edit Delete
7771 63 2 203 Recommended Questions 1, 2... 4 Edit Delete
7770 62 2 203 Recommended Questions 1, 2... 1 Edit Delete
7769 61 2 203 Recommended Questions 1, 2... 2 Edit Delete
7768 60 2 203 Recommended Questions 1, 2... 2 Edit Delete
7767 59 2 203 Recommended Questions 1, 2... 3 Edit Delete
7766 58 2 203 Recommended Questions 1, 2... 1 Edit Delete
7765 57 2 203 Recommended Questions 1, 2... 3 Edit Delete
7764 56 2 203 Recommended Questions 1, 2... 3 Edit Delete
7763 55 2 203 Recommended Questions 1, 2... 2 Edit Delete
7762 54 2 203 Recommended Questions 1, 2... 4 Edit Delete
7761 53 2 203 Recommended Questions 1, 2... 1 Edit Delete
7760 52 2 203 Recommended Questions 1, 2... 1 Edit Delete
7759 51 2 203 Recommended Questions 1, 2... 3 Edit Delete
7758 50 2 203 Recommended Questions 1, 2... 4 Edit Delete
7757 49 2 203 Recommended Questions 1, 2... 2 Edit Delete
7756 48 2 203 Recommended Questions 1, 2... 2 Edit Delete
7755 47 2 203 Recommended Questions 1, 2... 4 Edit Delete
7754 46 2 203 Recommended Questions 1, 2... 3 Edit Delete
7753 45 2 203 Recommended Questions 1, 2... 4 Edit Delete
7752 44 2 203 Recommended Questions 1, 2... 2 Edit Delete
7751 43 2 203 Recommended Questions 1, 2... 3 Edit Delete
7750 42 2 203 Recommended Questions 1, 2... 2 Edit Delete
7749 41 2 203 Recommended Questions 1, 2... 3 Edit Delete
7748 40 2 203 Recommended Questions 1, 2... 3 Edit Delete
7747 39 2 203 Recommended Questions 1, 2... 3 Edit Delete
7746 38 2 203 Recommended Questions 1, 2... 4 Edit Delete
7745 37 2 203 Recommended Questions 1, 2... 2 Edit Delete
7744 36 2 203 Recommended Questions 1, 2... 3 Edit Delete
7743 35 2 203 Recommended Questions 1, 2... 2 Edit Delete
7742 34 2 203 Recommended Questions 1, 2... 2 Edit Delete
7741 33 2 203 Recommended Questions 1, 2... 3 Edit Delete
7740 32 2 203 Recommended Questions 1, 2... 2 Edit Delete
7739 31 2 203 Recommended Questions 1, 2... 4 Edit Delete
7738 30 2 203 Recommended Questions 1, 2... 3 Edit Delete
7737 29 2 203 Recommended Questions 1, 2... 3 Edit Delete
7736 28 2 203 Recommended Questions 1, 2... 3 Edit Delete
7735 27 2 203 Recommended Questions 1, 2... 4 Edit Delete
7734 26 2 203 Recommended Questions 1, 2... 3 Edit Delete
7733 25 2 203 Recommended Questions 1, 2... 3 Edit Delete
7732 24 2 203 Recommended Questions 1, 2... 3 Edit Delete
7731 23 2 203 Recommended Questions 1, 2... 2 Edit Delete
7730 22 2 203 Recommended Questions 1, 2... 3 Edit Delete
7729 21 2 203 Recommended Questions 1, 2... 2 Edit Delete
7728 20 2 203 Recommended Questions 1, 2... 2 Edit Delete
7727 19 2 203 Recommended Questions 1, 2... 4 Edit Delete
7726 18 2 203 Recommended Questions 1, 2... 2 Edit Delete
7725 17 2 203 Recommended Questions 1, 2... 3 Edit Delete
7724 16 2 203 Recommended Questions 1, 2... 4 Edit Delete
7723 15 2 203 Recommended Questions 1, 2... 2 Edit Delete
7722 14 2 203 Recommended Questions 1, 2... 1 Edit Delete
7721 13 2 203 Recommended Questions 1, 2... 2 Edit Delete
7720 12 2 203 Recommended Questions 1, 2... 4 Edit Delete
7719 11 2 203 Recommended Questions 1, 2... 3 Edit Delete
7718 10 2 203 Recommended Questions 1, 2... 3 Edit Delete
7717 9 2 203 Recommended Questions 1, 2... 3 Edit Delete
7716 8 2 203 Recommended Questions 1, 2... 2 Edit Delete
7715 7 2 203 Recommended Questions 1, 2... 2 Edit Delete
7714 6 2 203 Recommended Questions 1, 2... 3 Edit Delete
7713 5 2 203 Recommended Questions 1, 2... 1 Edit Delete
7712 4 2 203 Recommended Questions 1, 2... 1 Edit Delete
7711 3 2 203 Recommended Questions 1, 2... 3 Edit Delete
7710 2 2 203 Recommended Questions 1, 2... 2 Edit Delete
7709 1 2 203 Recommended Questions 1, 2... 1 Edit Delete
7708 $\text{The order of basic character of given oxides is:}$ 2 203 Recommended Questions $\text{Na}_2\text{O} > \text{MgO} > \text{Al}_2\text{O}_3 > \text{CuO}$, $\text{MgO} > \text{Al}_2\text{O}_3 > \text{CuO} > \text{Na}_2\text{O}$... $\text{Na}_2\text{O} > \text{MgO} > \text{Al}_2\text{O}_3 > \text{CuO}$ Edit Delete
7707 $\text{The correct order among the following options is:}$ 2 203 Recommended Questions $\text{F} > \text{N} > \text{C} > \text{Si} > \text{Ga - Non-metallic character.}$, $\text{F} > \text{Cl} > \text{O} > \text{N - Oxidising property.}$... $\text{All of the above.}$ Edit Delete
7706 $\text{Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s}^2\text{2s}^2\text{2p}^3\text{, the simplest formula for this compound is:}$ 2 203 Recommended Questions $\text{Mg}_2\text{X}_3$, $\text{MgX}_2$... $\text{Mg}_3\text{X}_2$ Edit Delete
7705 $\text{The increasing order of non-metallic character of the elements N, P, O, and S is:}$ 2 203 Recommended Questions $\text{P} < \text{S} < \text{N} < \text{O}$, $\text{O} < \text{S} < \text{N} < \text{P}$... $\text{P} < \text{S} < \text{N} < \text{O}$ Edit Delete
7704 $\text{The correct order of metallic character of elements B, Al, Mg and K is :}$ 2 203 Recommended Questions $\text{B} > \text{Al} > \text{Mg} > \text{K}$, $\text{Al} > \text{Mg} > \text{B} > \text{K}$... $\text{K} > \text{Mg} > \text{Al} > \text{B}$ Edit Delete
7703 $\text{Incorrect statement about metal is:}$ 2 203 Recommended Questions $\text{Metals can donate electrons.}$, $\text{Metals form ionic compounds.}$... $\text{Metals are more electronegative.}$ Edit Delete
7702 $\text{Percentage ionic character, if electronegativity value of X=2.1 \& Y=3.0, is :-}$ 2 203 Recommended Questions $20$, $30$... $17$ Edit Delete
7701 $\text{The statement that "the electronegativity of N on the Pauling scale is 3.0 in all the nitrogen compounds" is incorrect because:}$ 2 203 Recommended Questions $\text{Electronegativity of an element is a variable property.}$, $\text{Pauling scale is not used to measure electronegativity.}$... $\text{Electronegativity of an element is a variable property.}$ Edit Delete
7700 $\text{The incorrect order of electronegativity is :}$ 2 203 Recommended Questions $\text{Cl} > \text{S} > \text{P} > \text{Si}$, $\text{Si} > \text{Al} > \text{Mg} > \text{Na}$... $\text{None of the above.}$ Edit Delete
7699 $\text{Allred Rochow's scale is related to:}$ 2 203 Recommended Questions $\text{Electronegativity, radius, and Z}^*$, $\text{Resonance energy of the molecule, ionisation potential and electron affinity.}$... $\text{Electronegativity, radius, and Z}^*$ Edit Delete
7698 $\text{The electronegativity of the following elements increases in the order of:}$ 2 203 Recommended Questions $\text{S} < \text{P} < \text{N} < \text{O}$, $\text{P} < \text{S} < \text{N} < \text{O}$... $\text{P} < \text{S} < \text{N} < \text{O}$ Edit Delete
7697 $\text{The electronegativity of the following elements increases in the order of:}$ 2 203 Recommended Questions $\text{S} < \text{P} < \text{N} < \text{O}$, $\text{P} < \text{S} < \text{N} < \text{O}$... $\text{P} < \text{S} < \text{N} < \text{O}$ Edit Delete
7696 $\text{The basic difference between the electron gain enthalpy (E}_a\text{) and electronegativity (E}_N\text{) is:}$ 2 203 Recommended Questions $\text{E}_a \text{ is the tendency to lose electrons, while E}_N \text{ is the tendency to repel the shared pairs of electrons.}$, $\text{E}_a \text{ is the tendency to gain neutrons, while E}_N \text{ is the tendency to attract the shared pairs of electrons.}$... $\text{E}_a \text{ is the tendency to gain electrons, while E}_N \text{ is the tendency to attract the shared pairs of electrons.}$ Edit Delete
7695 $\text{The basic difference between the electron gain enthalpy (E}_a\text{) and electronegativity (E}_N\text{) is:}$ 2 203 Recommended Questions $\text{E}_a \text{ is the tendency to lose electrons, while E}_N \text{ is the tendency to repel the shared pairs of electrons.}$, $\text{E}_a \text{ is the tendency to gain neutrons, while E}_N \text{ is the tendency to attract the shared pairs of electrons.}$... $\text{E}_a \text{ is the tendency to gain electrons, while E}_N \text{ is the tendency to attract the shared pairs of electrons.}$ Edit Delete
7694 $\text{Assertion (A): Fluorine forms only one oxoacid, HOF.}$\n\n$\text{Reason (R): Fluorine has a small size and high electronegativity.}$ 2 203 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True and (R) is not the correct explanation of (A).}$... $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$ Edit Delete
7693 $\text{Element/Ion that has the highest electron affinity is :}$ 2 203 Recommended Questions $\text{F}^-$, $\text{O}^-$... $\text{O}$ Edit Delete
7692 $\text{Incorrect statement about characteristics regarding halogens is :}$ 2 203 Recommended Questions $\text{Ionization energy decreases with increase in atomic number.}$, $\text{Electronegativity decreases with increase in atomic number.}$... $\text{Electron affinity decreases with increase in atomic number.}$ Edit Delete
7691 $\text{Electronic configuration of four elements A, B, C and D are given below :}$\n\n$\text{A. }1s^2 2s^2 2p^6$\n\n$\text{B. }1s^2 2s^2 2p^4$\n\n$\text{C. }1s^2 2s^2 2p^6 3s^1$\n\n$\text{D. }1s^2 2s^2 2p^5$\n\n$\text{The correct order of increasing tendency to gain electron is :}$ 2 203 Recommended Questions $\text{A} < \text{C} < \text{B} < \text{D}$, $\text{A} < \text{B} < \text{C} < \text{D}$... $\text{A} < \text{C} < \text{B} < \text{D}$ Edit Delete
7690 $\text{The process that requires absorption of energy is:}$ 2 203 Recommended Questions $\text{N} \rightarrow \text{N}^-$, $\text{F} \rightarrow \text{F}^-$... $\text{N} \rightarrow \text{N}^-$ Edit Delete
7689 $\text{The group of metals having the positive value of electron gain enthalpy is:}$ 2 203 Recommended Questions $\text{Cr, Fe}$, $\text{Mn, Zn}$... $\text{Mn, Zn}$ Edit Delete
7688 $\text{Element of the third period that is expected to exhibit positive electron gain enthalpy is:}$ 2 203 Recommended Questions $\text{Na}$, $\text{Al}$... $\text{Ar}$ Edit Delete
7687 $\text{Elements}\quad\Delta H_1\quad\Delta H_2\quad\Delta_{eg}H$\n\n$\text{I}\quad\quad\quad 520\quad 7300\quad -60$\n\n$\text{II}\quad\quad\quad 419\quad 3051\quad -48$\n\n$\text{III}\quad\quad 1681\quad 3374\quad -328$\n\n$\text{IV}\quad\quad 1008\quad 1846\quad -295$\n\n$\text{V}\quad\quad 2372\quad 5251\quad +48$\n\n$\text{VI}\quad\quad\quad 738\quad 1451\quad -40$\n\n$\text{The least reactive element based on the above data is:}$ 2 203 Recommended Questions $\text{III}$, $\text{IV}$... $\text{V}$ Edit Delete
7686 $\text{An element with higher negative electron gain enthalpy in the given pair is:}\n\text{(i) O or F (ii) F or Cl}$ 2 203 Recommended Questions $\text{O, Cl}$, $\text{F, F}$... $\text{F, Cl}$ Edit Delete
7685 $\text{The correct order for electron affinity of halogens is :}$ 2 203 Recommended Questions $\text{Br} > \text{F}$, $\text{F} > \text{Cl}$... $\text{F} > \text{I}$ Edit Delete
7684 $\text{The incorrect match among the following is:}$ 2 203 Recommended Questions $\text{B} < \text{C} < \text{N} < \text{O}\text{ (increasing first ionisation enthalpy)}$, $\text{I} < \text{Br} < \text{F} < \text{Cl}\text{ (increasing electron gain enthalpy)}$... $\text{B} < \text{C} < \text{N} < \text{O}\text{ (increasing first ionisation enthalpy)}$ Edit Delete
7683 $\text{The reactivity of alkali metals increases, whereas halogen decreases down the group, because:}$ 2 203 Recommended Questions $\text{On moving down, ionization enthalpy decreases in group 1 while the electron gain enthalpy becomes less negative in group 17.}$, $\text{On moving down, ionization enthalpy increases in group 1 while the electron gain enthalpy becomes less negative in group 17.}$... $\text{On moving down, ionization enthalpy decreases in group 1 while the electron gain enthalpy becomes less negative in group 17.}$ Edit Delete
7682 $\text{The electron gain enthalpies of halogens in kJ mol}^{-1}\text{ are given below.}$ $\text{F} = -332, \text{Cl} = -349, \text{Br} = -325, \text{I} = -295.$ $\text{The lesser negative value for F as compared to that of Cl is due to:}$ 2 203 Recommended Questions $\text{Strong electron-electron repulsions in the compact 2p-subshell of F.}$, $\text{Weak electron-electron repulsions in the bigger 3p-subshell of Cl.}$... $\text{1 & 2 both}$ Edit Delete
7681 $\text{The correct order of increasing electron affinity for the elements, O, S, F and Cl is:}$ 2 203 Recommended Questions $\text{Cl} < \text{F} < \text{O} < \text{S}$, $\text{O} < \text{S} < \text{F} < \text{Cl}$... $\text{O} < \text{S} < \text{F} < \text{Cl}$ Edit Delete
7680 $\text{The correct order of increasing electron gain enthalpy with a negative sign for the elements O, S, F, and Cl is :}$ 2 203 Recommended Questions $\text{Cl} < \text{F} < \text{S} < \text{O}$, $\text{O} < \text{S} < \text{F} < \text{Cl}$... $\text{O} < \text{S} < \text{F} < \text{Cl}$ Edit Delete
7679 $\text{The formation of the oxide ion O}^{2-}\text{(g), from the oxygen atom requires first an exothermic and then an endothermic step as shown below,}$ $\text{O(g) + e}^- \rightarrow \text{O}^-; \Delta_f H^0 = -141 \text{ kJ mol}^{-1}$ $\text{O}^-\text{(g) + e}^- \rightarrow \text{O}^{2-}\text{(g)}; \Delta_f H^0 = +780 \text{ kJ mol}^{-1}$ $\text{Thus, the process of formation of O}^{2-}\text{ in the gas phase is unfavorable even though O}^{2-}\text{ is isoelectronic with neon. It is due to the fact that:}$ 2 203 Recommended Questions $\text{Electron repulsion outweighs the stability gained by achieving noble gas configuration.}$, $\text{O}^-\text{ ion has a comparatively smaller size than the oxygen atom.}$... $\text{Electron repulsion outweighs the stability gained by achieving noble gas configuration.}$ Edit Delete
7678 $\text{Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy) is:}$ 2 203 Recommended Questions $\text{F} > \text{Cl} > \text{Br} > \text{I}$, $\text{F} < \text{Cl} < \text{Br} < \text{I}$... $\text{F} < \text{Cl} > \text{Br} > \text{I}$ Edit Delete
7677 $\text{The atomic species that has the maximum ionization energy is :}$ 2 203 Recommended Questions $\text{O}^-$, $\text{S}^-$... $\text{S}^-$ Edit Delete
7676 $\text{1st }(\Delta H_1)\text{ and 2nd }(\Delta H_2)\text{ Ionization Enthalpies (in kJ mol}^{-1})\text{ and the }(\Delta_{eg}H)\text{ Electron Gain Enthalpy (in kJ mol}^{-1})\text{ of a few elements are given below:}$ $\begin{array}{|c|c|c|c|} \hline \text{Elements} & \Delta H_1 & \Delta H_2 & \Delta_{eg}H \\ \hline \text{I} & 520 & 7300 & -60 \\ \text{II} & 419 & 3051 & -48 \\ \text{III} & 1681 & 3374 & -328 \\ \text{IV} & 1008 & 1846 & -295 \\ \text{V} & 2372 & 5251 & +48 \\ \text{VI} & 738 & 1451 & -40 \\ \hline \end{array}$ $\text{The most reactive metal is:}$ 2 203 Recommended Questions $\text{VI}$, $\text{III}$... $\text{II}$ Edit Delete
7675 $\text{The element having very high electron affinity but zero ionisation enthalpy is:}$ 2 203 Recommended Questions $\text{He (due to inert gas configuration)}$, $\text{Be (due to fully filled subshell)}$... $\text{None of the above}$ Edit Delete
7674 $\text{First three ionisation energies (in kJ/mol) of three representative elements are given below:}$ $\begin{array}{|c|c|c|c|} \hline \text{Element} & IE_1 & IE_2 & IE_3 \\ \hline \text{P} & 495.8 & 4562 & 6910 \\ \text{Q} & 737.7 & 1451 & 7733 \\ \text{R} & 577.5 & 1817 & 2745 \\ \hline \end{array}$ $\text{Then incorrect option is :}$ 2 203 Recommended Questions $\text{Q: Alkaline earth metal.}$, $\text{P: Alkali metal.}$... $\text{R: s-block element.}$ Edit Delete
7673 $\text{If the ionization enthalpy and negative electron gain enthalpy of an element are 275 and 86 kcal mol}^{-1} \text{ respectively, then the electronegativity of the element on the Pauling scale is:}$ 2 203 Recommended Questions $2.8$, $0.0$... $2.8$ Edit Delete
7672 $\text{The energy of an electron in the ground state of the hydrogen atom is } -2.18 \times 10^{-18} \text{ J. The ionization enthalpy of atomic hydrogen in terms of J mol}^{-1} \text{ is:}$ 2 203 Recommended Questions $2.81 \times 10^6 \text{ J mol}^{-1}$, $1.31 \times 10^6 \text{ J mol}^{-1}$... $1.31 \times 10^6 \text{ J mol}^{-1}$ Edit Delete
7671 $\text{The correct graph depicting ionization energies for } 2^{\text{nd}} \text{ period elements is:}$ 2 203 Recommended Questions $\text{Graph 1: Shows smooth increasing trend with slight dip at B, then continues increasing to Ne}$, $\text{Graph 2: Shows increasing trend with dip at B and another dip at O, then increases to Ne}$... $\text{Graph 3: Shows increasing trend with dip at B and peak at N higher than O, then increases to Ne}$ Edit Delete
7670 $\text{In the following graph of variation of ionization energy with atomic number, X, Y, and Z represent elements.}$\n\n$\text{[Graph shows ionization energy vs atomic number with peaks labeled X (~2300 kJ/mol), Y (~1300 kJ/mol), and Z (~1000 kJ/mol) representing the highest points in their respective periods]}$\n\n$\text{The group number of X, Y, and Z elements is:}$ 2 203 Recommended Questions $1^{\text{st}} \text{ group}$, $15^{\text{th}} \text{ group}$... $18^{\text{th}} \text{ group}$ Edit Delete
7669 Element that has the greatest tendency to lose an electron is : 2 203 Recommended Questions $\text{F}$, $\text{Fr}$... $\text{Fr}$ Edit Delete
7668 The first ionisation enthalpies of $\text{Na, Mg, Al,}$ and $\text{Si}$ are in the order of: 2 203 Recommended Questions $\text{Na} < \text{Al} < \text{Mg} < \text{Si}$, $\text{Na} > \text{Mg} > \text{Al} > \text{Si}$... $\text{Na} < \text{Al} < \text{Mg} < \text{Si}$ Edit Delete
7667 The correct order of ionization energy of $\text{W, X, Y}$ and $\text{Z}$ is- 2 203 Recommended Questions $\text{W} > \text{X} > \text{Y} > \text{Z}$, $\text{W} < \text{X} < \text{Y} > \text{Z}$... $\text{W} < \text{X} > \text{Y} < \text{Z}$ Edit Delete
7666 The values of the first ionization enthalpies for two isotopes would be: 2 203 Recommended Questions Same., Different.... Same. Edit Delete
7665 Amongst the following electronic configurations, the highest ionization energy is represented by: 2 203 Recommended Questions $[\text{Ne}]3s^23p^3$, $[\text{Ne}]3s^23p^2$... $[\text{Ne}]3s^23p^3$ Edit Delete
7664 For the second-period elements, the correct increasing order of first ionisation enthalpy is: 2 203 Recommended Questions $\text{Li} < \text{Be} < \text{B} < \text{C} < \text{O} < \text{N} < \text{F} < \text{Ne}$, $\text{Li} < \text{Be} < \text{B} < \text{C} < \text{N} < \text{O} < \text{F} < \text{Ne}$... $\text{Li} < \text{B} < \text{Be} < \text{C} < \text{O} < \text{N} < \text{F} < \text{Ne}$ Edit Delete
7663 The incorrect statement about ionization enthalpy is: 2 203 Recommended Questions Ionization enthalpy increases for each successive electron., Noble gases have the highest ionization enthalpy.... Ionization enthalpy of oxygen is higher than that of nitrogen. Edit Delete
7662 $\text{IP}_1$ and $\text{IP}_2$ for $\text{Mg}$ are $178 \text{ Kcal mol}^{-1}$ and $348 \text{ Kcal mol}^{-1}$, respectively. The energy required for the reaction, $\text{Mg} \rightarrow \text{Mg}^{2+} + 2e^{-}$ will be: 2 203 Recommended Questions $+170 \text{ Kcal mol}^{-1}$, $+526 \text{ Kcal mol}^{-1}$... $+526 \text{ Kcal mol}^{-1}$ Edit Delete
7661 Abnormally high ionization enthalpy of $\text{B}$ as depicted in the graph below can be due to : 2 203 Recommended Questions Completely filled $2p$ subshell., Completely filled $2s$ subshell.... Completely filled $2s$ subshell. Edit Delete
7660 $\text{A configuration with the lowest ionization enthalpy among the following is:}$ 2 203 Recommended Questions $1s^2 2s^2 2p^5$, $1s^2 2s^2 2p^3$... $1s^2 2s^2 2p^6 3s^1$ Edit Delete
7659 $\text{The graph between ionization energy and atomic number for the first group elements is shown below:}$\n\n$\text{[Graph shows points: Li (~525 kJ/mol), X (~495 kJ/mol), Y (~420 kJ/mol), Z (~400 kJ/mol), and Cs (~375 kJ/mol) with decreasing ionization energy as atomic number increases]}$\n\n$\text{The element represented by Y in the graph above is -}$ 2 203 Recommended Questions $\text{Cs}$, $\text{Rb}$... $\text{K}$ Edit Delete
7658 $\text{Boron has lesser ionization enthalpy than Beryllium, because:}$ 2 203 Recommended Questions $\text{It is easier to remove electrons from p - a subshell than a filled s - subshell.}$, $\text{The s-electron can be removed easier than the p-electron.}$... $\text{It is easier to remove electrons from p - a subshell than a filled s - subshell.}$ Edit Delete
7657 $\text{The first ionization enthalpy values (in kJ mol}^{-1}\text{) of group 13 elements are:}$\n\n$\text{B} \quad \text{Al} \quad \text{Ga} \quad \text{In} \quad \text{Tl}$\n\n$801 \quad 577 \quad 579 \quad 558 \quad 589$\n\n$\text{The explanation for the deviation from the general trend can be -}$ 2 203 Recommended Questions $\text{Ga has lower ionization enthalpy than Al.}$, $\text{Ga has higher ionization enthalpy than Al.}$... $\text{Ga has higher ionization enthalpy than Al.}$ Edit Delete
7656 $\text{The radius of which ion is closest to that of } \text{Li}^+ \text{ ion?}$ 2 203 Recommended Questions $\text{Na}^+$, $\text{Be}^{2+}$... $\text{Mg}^{2+}$ Edit Delete
7655 $\text{Consider the following curve showing atomic radius vs atomic number. X represents group with highest atomic radius. The element that belongs to Y group can be:}$ 2 203 Recommended Questions $\text{Na}$, $\text{Mg}$... $\text{Br}$ Edit Delete
7654 $\text{The correct sequence of increasing order of density is:}$ 2 203 Recommended Questions $\text{Li} < \text{K} < \text{Na} < \text{Rb} < \text{Cs}$, $\text{Li} < \text{Na} < \text{K} < \text{Rb} < \text{Cs}$... $\text{Li} < \text{K} < \text{Na} < \text{Rb} < \text{Cs}$ Edit Delete
7653 $\text{Given below are four orders for the size of the species. Choose the correct ones:}$ $\text{(a) Al}^{3+} < \text{Mg}^{2+} < \text{Na}^+ < \text{F}^-$ $\text{(b) Al}^{3+} < \text{Mg}^{2+} < \text{Li}^+ < \text{K}^+$ $\text{(c) Fe}^{4+} < \text{Fe}^{3+} < \text{Fe}^{2+} < \text{Fe}$ $\text{(d) Mg} > \text{Al} > \text{Si} > \text{P}$ 2 203 Recommended Questions $\text{(a), (b) & (c)}$, $\text{(b), (c) & (d)}$... $\text{(a), (b), (c) & (d)}$ Edit Delete
7652 $\text{Isoelectronic pair, among the following, is:}$ 2 203 Recommended Questions $\text{ClO}_2^-, \text{ClF}_2^+$, $\text{IF}_2^-, \text{I}_3^-$... $\text{ClO}_2^-, \text{ClF}_2^+$ Edit Delete
7651 $\text{The size of isoelectronic species: F}^-, \text{Ne and Na}^+, \text{ is affected by:}$ 2 203 Recommended Questions $\text{Nuclear charge (Z)}$, $\text{Valence principal quantum number (n)}$... $\text{Nuclear charge (Z)}$ Edit Delete
7650 $\text{The trend of atomic radius in a period and a group is:}$ 2 203 Recommended Questions $\text{Generally decreases from right to left across a period and increases down a group.}$, $\text{Generally increases from left to right across a period and decreases down a group.}$... $\text{Generally decreases from left to right across a period and increases down a group.}$ Edit Delete
7649 $\text{The correctly matched option is:}$ 2 203 Recommended Questions $\text{Fe}^{3+} > \text{Fe}^{2+} > \text{Fe}^+ \text{ : Order of atomic radius}$, $\text{O} > \text{C} > \text{B} > \text{N} \text{ : Order of ionisation energy}$... $\text{O}^{2-} < \text{O}^- < \text{O} < \text{O}^+ \text{ : Increasing order of } Z_{\text{eff}}$ Edit Delete
7648 $\text{The ionic radius indicates the distance between the nucleus and:}$ 2 203 Recommended Questions $\text{Outermost shell of an atom.}$, $\text{Outermost shell of an ion.}$... $\text{Outermost shell of an ion.}$ Edit Delete
7647 $\text{The correct order of ionic radii is:}$ 2 203 Recommended Questions $\text{H}^- > \text{H}^+ > \text{H}$, $\text{Na}^+ > \text{F}^- > \text{O}^{2-}$... $\text{N}^{3-} > \text{Mg}^{2+} > \text{Al}^{3+}$ Edit Delete
7646 $\text{Increasing order of ionic radii and decreasing order of number of protons of the given isoelectronic species is:}$ 2 203 Recommended Questions $\text{Ca}^{2+}, \text{K}^+, \text{Cl}^-, \text{S}^{2-}$, $\text{Cl}^-, \text{Ca}^{2+}, \text{K}^+, \text{S}^{2-}$... $\text{Ca}^{2+}, \text{K}^+, \text{Cl}^-, \text{S}^{2-}$ Edit Delete
7645 $\text{A common trend in both groups I and II elements in the periodic table, as the atomic number increases, is:}$ 2 203 Recommended Questions $\text{Oxidizing power increases}$, $\text{Atomic radius increases}$... $\text{Atomic radius increases}$ Edit Delete
7644 $\text{In alkaline earth metals, the properties, from the following, that will increase from Be to Ba are:}$ $\text{(i) Atomic radius}$ $\text{(ii) Ionisation energy}$ $\text{(iii) Nuclear charge}$ 2 203 Recommended Questions $\text{(i) and (ii)}$, $\text{(i) and (iii)}$... $\text{(i) and (iii)}$ Edit Delete
7643 $\text{The correct sequence of increasing radii is:}$ 2 203 Recommended Questions $\text{Ar} < \text{K}^+ < \text{Ca}^{2+}$, $\text{Ca}^{2+} < \text{Ar} < \text{K}^+$... $\text{Ca}^{2+} < \text{K}^+ < \text{Ar}$ Edit Delete
7642 $\text{Among the following species, the smallest ion is:}$ 2 203 Recommended Questions $\text{Na}^+$, $\text{F}^-$... $\text{Na}^+$ Edit Delete
7641 $\text{Match the following isoelectronic species in Column I and Column II:}$ $\text{Column I: (i) F}^- \text{, (ii) Ar, (iii) Mg, (iv) Rb}^+$ $\text{Column II: (a) Br}^- \text{, (b) Si}^{2+} \text{, (c) O}^{2-} \text{, (d) S}^{2-}$ 2 203 Recommended Questions $\text{(i) b, (ii) c, (iii) a, (iv) d}$, $\text{(i) c, (ii) b, (iii) a, (iv) d}$... $\text{(i) c, (ii) d, (iii) b, (iv) a}$ Edit Delete
7640 $\text{The correct order of the decreasing ionic radii among the following isoelectronic species is:}$ 2 203 Recommended Questions $\text{Ca}^{2+} > \text{K}^+ > \text{S}^{2-} > \text{Cl}^-$, $\text{Cl}^- > \text{S}^{2-} > \text{Ca}^{2+} > \text{K}^+$... $\text{S}^{2-} > \text{Cl}^- > \text{K}^+ > \text{Ca}^{2+}$ Edit Delete
7639 $\text{The correct statement about the radius of a species is:}$ 2 203 Recommended Questions $\text{Radius increases during cation and anion formation.}$, $\text{Radius increases during anion formation and decreases during cation formation.}$... $\text{Radius increases during anion formation and decreases during cation formation.}$ Edit Delete
7638 $\text{The correct order of size of the given species is:}$ 2 203 Recommended Questions $\text{I} > \text{I}^- > \text{I}^+$, $\text{I}^+ > \text{I}^- > \text{I}$... $\text{I}^- > \text{I} > \text{I}^+$ Edit Delete
7637 $\text{The screening effect of 'd' electrons is:}$ 2 203 Recommended Questions $\text{Much less than s-electrons.}$, $\text{Much more than s-electrons.}$... $\text{Much less than s-electrons.}$ Edit Delete
7636 $\text{The order of screening effect of electrons of s, p, d and f orbitals of a given shell of an atom on electrons in its outer shell is:}$ 2 203 Recommended Questions $\text{s} > \text{p} > \text{d} > \text{f}$, $\text{f} > \text{d} > \text{p} > \text{s}$... $\text{s} > \text{p} > \text{d} > \text{f}$ Edit Delete
7635 $\text{The most common oxidation state of cerium (Ce) is:}$ 2 203 Recommended Questions $+5, +3$, $+5, +4$... $+3, +4$ Edit Delete
7634 50 2 203 Recommended Questions 1, 2... 4 Edit Delete
7633 $\text{The incorrect match among the following options is:}$ 2 203 Recommended Questions $[\text{Ar}]3\text{d}^5 4\text{s}^1 \rightarrow 4^{\text{th}} \text{period}, 6^{\text{th}} \text{group}$, $[\text{Kr}]4\text{d}^{10} \rightarrow 5^{\text{th}} \text{period}, 12^{\text{th}} \text{group}$... $[\text{Kr}]4\text{d}^{10} \rightarrow 5^{\text{th}} \text{period}, 12^{\text{th}} \text{group}$ Edit Delete
7632 $\text{The electronic configuration of the most electropositive element is:}$ 2 203 Recommended Questions $[\text{He}]2\text{s}^1$, $[\text{Xe}]6\text{s}^1$... $[\text{Xe}]6\text{s}^1$ Edit Delete
7631 $\text{The electronic configuration of Palladium is:}$ 2 203 Recommended Questions $[\text{Kr}] 5\text{f}^3 6\text{d}^1 7\text{s}^2$, $[\text{Kr}] 5\text{f}^5 6\text{d}^1 7\text{s}^2$... $\text{None of the above.}$ Edit Delete
7630 $\text{The factor that does not affect the valence electron is:}$ 2 203 Recommended Questions $\text{Azimuthal quantum number}$, $\text{Nuclear charge (Z)}$... $\text{Nuclear mass}$ Edit Delete
7629 $\text{Element}$ $_{58}\text{Ce}$ $\text{belongs to:}$ 2 203 Recommended Questions $\text{s-block elements}$, $\text{p-block elements}$... $\text{f-block elements}$ Edit Delete
7628 $\text{Among the following, the most characteristic oxidation states for lead and tin are, respectively:}$ 2 203 Recommended Questions $+4, +2$, $+2, +4$... $+2, +4$ Edit Delete
7627 $\text{Consider the following electronic configuration of an element (P):}$\n\n$[\text{Xe}]4\text{f}^{14}5\text{d}^16\text{s}^2$\n\n$\text{The correct statement about element 'P' is:}$ 2 203 Recommended Questions $\text{It belongs to the 6th period and the 1st group.}$, $\text{It belongs to the 6th period and the 2nd group.}$... $\text{It belongs to the 6th period and the 3rd group.}$ Edit Delete
7626 $\text{The electronic configuration of chalcogens in their outermost shell is:}$ 2 203 Recommended Questions $\text{ns}^2 \text{np}^3$, $\text{ns}^2 \text{np}^4$... $\text{ns}^2 \text{np}^4$ Edit Delete
7625 $\text{The position of elements with an outer electronic configuration as}$ $(\text{n} - 2) \text{f}^7 (\text{n} - 1) \text{d}^1 \text{ns}^2$, $\text{n} = 6$ $\text{:}$ 2 203 Recommended Questions $6^{\text{th}} \text{period and } 10^{\text{th}} \text{group.}$, $7^{\text{th}} \text{period and } 3^{\text{rd}} \text{group.}$... $6^{\text{th}} \text{period and } 3^{\text{rd}} \text{group.}$ Edit Delete
7624 $\text{The general outer electronic configuration of s, p, d, and f-block elements respectively would be:}$ 2 203 Recommended Questions $\text{ns}^{1-2}, \text{nd}^2\text{np}^{1-6}, (\text{n}-1)\text{d}^{1-10}\text{np}^{0-2}, (\text{n}-2)\text{f}^{1-14}(\text{n}-1)\text{d}^{0-10}\text{ns}^2$, $\text{ns}^{1-2}, \text{ns}^2\text{np}^{1-6}, (\text{n}-1)\text{f}^{1-10}\text{ns}^{0-2}, (\text{n}-2)\text{g}^{1-14}(\text{n}-1)\text{d}^{0-1}\text{ns}^2$... $\text{ns}^{1-2}, \text{ns}^2\text{np}^{1-6}, (\text{n}-1)\text{d}^{1-10}\text{ns}^{1-2}, (\text{n}-2)\text{f}^{1-14}(\text{n}-1)\text{d}^{0-1} \text{ns}^2$ Edit Delete
7623 $\text{The electronic configuration that represents the d-block element is:}$ 2 203 Recommended Questions $1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6 3\text{d}^{10} 4\text{s}^2 4\text{p}^6$, $1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6 3\text{d}^{10} 4\text{s}^2 4\text{p}^1$... $1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6 3\text{d}^{10} 4\text{s}^2$ Edit Delete
7622 $\text{The pair that has both members from the same period of the Periodic Table is}$ 2 203 Recommended Questions $\text{Cl, Br}$, $\text{Ca, Cl}$... $\text{Na, Cl}$ Edit Delete
7621 $\text{Sodium generally does not show an oxidation state of +2, because of:}$ 2 203 Recommended Questions $\text{High first ionization potential.}$, $\text{High second ionization potential.}$... $\text{High second ionization potential.}$ Edit Delete
7620 $\text{The outermost electronic configuration of the most electronegative element is:}$ 2 203 Recommended Questions $\text{ns}^2, \text{np}^3$, $\text{ns}^2, \text{np}^6\text{n} - 1\text{d}^5$... $\text{ns}^2, \text{np}^5$ Edit Delete
7619 $\text{Elements with an electronic configuration}$ $1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6 3\text{d}^{10} 4\text{s}^2 4\text{p}^6 4\text{d}^{10} 5\text{s}^2 5\text{p}^3$ $\text{belong to the group:}$ 2 203 Recommended Questions $3^{\text{rd}}$, $15^{\text{th}}$... $15^{\text{th}}$ Edit Delete
7618 $\text{The period and group number of the element with Z = 114 are:}$ 2 203 Recommended Questions $\text{8th period and 16th group}$, $\text{7th period and 14th group}$... $\text{7th period and 14th group}$ Edit Delete
7617 $\text{The maximum number of elements that can be accommodated in the sixth period are:}$ 2 203 Recommended Questions $8$, $18$... $32$ Edit Delete
7616 $\text{Match Column I with Column II.}$\n\n$\text{Column-I}$\n$\text{(a) Copper}$\n$\text{(b) Fluorine}$\n$\text{(c) Silicon}$\n$\text{(d) Cerium}$\n\n$\text{Column-II}$\n$\text{(i) Non-metal}$\n$\text{(ii) Transition metal}$\n$\text{(iii) Lanthanoid}$\n$\text{(iv) Metalloid}$ 2 203 Recommended Questions $\text{(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)}$, $\text{(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)}$... $\text{(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)}$ Edit Delete
7615 $\text{The lightest metal in the periodic table is:}$ 2 203 Recommended Questions $\text{H}$, $\text{Mg}$... $\text{Li}$ Edit Delete
7614 $\text{Which among the following elements is the bridge element?}$ 2 203 Recommended Questions $\text{K}$, $\text{O}$... $\text{Mg}$ Edit Delete
7613 $\text{Considering the elements B, C, N, F, and Si; the correct order of their non-}$ $\text{metallic character is :}$ 2 203 Recommended Questions $\text{B} > \text{C} > \text{Si} > \text{N} > \text{F}$, $\text{Si} > \text{C} > \text{B} > \text{N} > \text{F}$... $\text{F} > \text{N} > \text{C} > \text{B} > \text{Si}$ Edit Delete
7612 $\text{The formula of the stable binary compounds that would be formed by an}$ $\text{element having atomic number 71 and fluorine:}$ 2 203 Recommended Questions $\text{LuF}_6$, $\text{LuF}_2$... $\text{LuF}_3$ Edit Delete
7611 $\text{The group number that has non-metal, liquid as well as gas at room temperature is:}$ 2 203 Recommended Questions $15$, $14$... $17$ Edit Delete
7610 $\text{The total number of 3rd period elements with more than one electron in a 3d orbital is:}$ 2 203 Recommended Questions $9$, $11$... 3 Edit Delete
7609 $\text{Identify the INCORRECT match.}$ 2 203 Recommended Questions $\text{(b)- (ii)}$, $\text{(c)- (iii)}$... 3 Edit Delete
7608 24 2 203 Recommended Questions 1, 2... 3 Edit Delete
7607 23 2 203 Recommended Questions 1, 2... 2 Edit Delete
7606 22 2 203 Recommended Questions 1, 2... 3 Edit Delete
7605 21 2 203 Recommended Questions 1, 2... 2 Edit Delete
7604 20 2 203 Recommended Questions 1, 2... 2 Edit Delete
7603 19 2 203 Recommended Questions 1, 2... 4 Edit Delete
7602 18 2 203 Recommended Questions 1, 2... 2 Edit Delete
7601 17 2 203 Recommended Questions 1, 2... 3 Edit Delete
7600 16 2 203 Recommended Questions 1, 2... 4 Edit Delete
7599 15 2 203 Recommended Questions 1, 2... 2 Edit Delete
7598 14 2 203 Recommended Questions 1, 2... 1 Edit Delete
7597 13 2 203 Recommended Questions 1, 2... 2 Edit Delete
7596 12 2 203 Recommended Questions 1, 2... 4 Edit Delete
7595 11 2 203 Recommended Questions 1, 2... 3 Edit Delete
7594 10 2 203 Recommended Questions 1, 2... 3 Edit Delete
7593 9 2 203 Recommended Questions 1, 2... 3 Edit Delete
7592 8 2 203 Recommended Questions 1, 2... 2 Edit Delete
7591 7 2 203 Recommended Questions 1, 2... 2 Edit Delete
7590 6 2 203 Recommended Questions 1, 2... 3 Edit Delete
7589 5 2 203 Recommended Questions 1, 2... 1 Edit Delete
7588 4 2 203 Recommended Questions 1, 2... 1 Edit Delete
7587 3 2 203 Recommended Questions 1, 2... 3 Edit Delete
7586 2 2 203 Recommended Questions 1, 2... 2 Edit Delete
7585 1 2 203 Recommended Questions 1, 2... 1 Edit Delete
7584 $\text{When a photon with a wavelength of 150 pm strikes an atom, one of its inner}$ $\text{bound electrons is ejected at a velocity of } 1.5 \times 10^7 \text{ m s}^{-1}\text{. The energy with}$ $\text{which it is bound to the nucleus would be:}$ 2 202 Recommended Questions $32.22 \times 10^{-16} \text{ J}$, $12.22 \times 10^{-16} \text{ J}$... 2 Edit Delete
7583 $\text{Assertion (A): It is impossible to determine the exact position and exact}$ $\text{momentum of an electron simultaneously.}$\n\n$\text{Reason (R): The path of an electron in an atom is clearly defined.}$ 2 202 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
7582 $\text{Identify the element with the highest number of unpaired electrons in its}$ $\text{ground state from the given options :}$ 2 202 Recommended Questions $\text{P}$, $\text{Fe}$... 4 Edit Delete
7581 $\text{The circumference of the Bohr orbit for the H atom is related to the de Broglie}$ $\text{wavelength associated with the electron revolving around the orbit by the}$ $\text{following relation:}$ 2 202 Recommended Questions $2\pi r = n\lambda$, $\pi r = 2n\lambda$... 1 Edit Delete
7580 $\text{The circumference of the Bohr orbit for the H atom is related to the de Broglie}$ $\text{wavelength associated with the electron revolving around the orbit by the}$ $\text{following relation:}$ 2 202 Recommended Questions $2\pi r = n\lambda$, $\pi r = 2n\lambda$... 3 Edit Delete
7579 $\text{The incorrect set of quantum numbers among the following is:}$ 2 202 Recommended Questions $n = 4, l = 0, m = 0, s = -1/2$, $n = 5, l = 3, m = 0, s = +1/2$... 3 Edit Delete
7578 $\text{The possible values of n, l, and m for the electron present in 3d would be}$ $\text{respectively:}$ 2 202 Recommended Questions $n = 3, l = 1, m = -2, -1, 3, 1, 2$, $n = 3, l = 3, m = -2, -1, 0, 1, 2$... 3 Edit Delete
7577 132 2 202 Recommended Questions 1, 2... 1 Edit Delete
7576 $\text{The magnetic moment of 2.84 BM can be shown by:}$\n\n$\text{(At. no. Ni = 28, Ti = 22, Cr = 24, Co = 27)}$ 2 202 Recommended Questions $\text{Ni}^{2+}$, $\text{Ti}^{3+}$... 2 Edit Delete
7575 $\text{In photoelectric effect, the kinetic energy of photoelectrons increases linearly}$ $\text{with the:}$ 2 202 Recommended Questions $\text{Wavelength of incident light.}$, $\text{Frequency of incident light.}$... 4 Edit Delete
7574 $\text{The atomic number of elements whose outermost electronic configuration are}$ $\text{represented by } 3\text{s}^1 \text{ and } 2\text{p}^5 \text{ respectively, is:}$ 2 202 Recommended Questions $9, 7$, $9, 11$... 4 Edit Delete
7573 $\text{The orbital diagram in which both Pauli's exclusion principle and Hund's rule}$ $\text{are violated is:}$ 2 202 Recommended Questions $\text{2s: } \uparrow\downarrow \quad \text{2p: } \uparrow\uparrow, \uparrow, \text{empty}$, $\text{2s: } \uparrow\downarrow \quad \text{2p: } \uparrow\downarrow, \text{empty}, \uparrow\downarrow$... 1 Edit Delete
7572 $\text{If the electronic structure of oxygen atom is written as } 1\text{s}^2, 2\text{s}^2 \uparrow\uparrow \text{ it}$ $\text{would violate:}$ 2 202 Recommended Questions $\text{Hund's rule.}$, $\text{Paulis exclusion principle.}$... 1 Edit Delete
7571 $\text{Match the ensuing rules with the corresponding statements:}$ 2 202 Recommended Questions $\text{A-3, B-5, C-1, D-2}$, $\text{A-1, B-2, C-3, D-4}$... 3 Edit Delete
7570 $\text{An electronic configuration representing an atom in the excited state is:}$ 2 202 Recommended Questions $1\text{s}^2, 2\text{s}^22\text{p}^1$, $1\text{s}^2, 2\text{s}^22\text{p}^2$... 3 Edit Delete
7569 $\text{Match the following species with their corresponding ground state electronic}$ $\text{configuration.}$ 2 202 Recommended Questions $\text{A-4, B-2, C-5, D-1}$, $\text{A-3, B-4, C-1, D-5}$... 2 Edit Delete
7568 $\text{The number of unpaired electrons in } 1\text{s}^2 2\text{s}^2 2\text{p}^3 \text{ is -}$ 2 202 Recommended Questions $2$, $0$... 3 Edit Delete
7567 $\text{The electronic configurations of Eu (Atomic no. 63), Gd (Atomic no. 64) and Tb}$ $\text{(Tb Atomic no. 65) are}$ 2 202 Recommended Questions $[\text{Xe}]4\text{f}^65\text{d}^16\text{s}^2, [\text{Xe}]4\text{f}^75\text{d}^16\text{s}^2 \text{ and } [\text{Xe}]4\text{f}^96\text{s}^2$, $[\text{Xe}]4\text{f}^65\text{d}^16\text{s}^2, [\text{Xe}]4\text{f}^75\text{d}^16\text{s}^2 \text{ and } [\text{Xe}]4\text{f}^85\text{d}^16\text{s}^2$... 3 Edit Delete
7566 $\text{If } n = 6, \text{ the correct sequence for the filling of electrons will be:}$ 2 202 Recommended Questions $\text{ns} \rightarrow (n-1)\text{d} \rightarrow (n-2)\text{f} \rightarrow \text{np}$, $\text{ns} - (n-2)\text{f} \rightarrow \text{np} \rightarrow (n-1)\text{d}$... 4 Edit Delete
7565 $\text{The number of d-electrons in } \text{Fe}^{2+} \text{ (atomic number Z = 26) is different from the number of:}$ 2 202 Recommended Questions $\text{s-electrons in Mg (Z = 12)}$, $\text{p-electrons in Cl (Z = 17)}$... 2 Edit Delete
7564 $\text{The group number and electronic configuration of element Z =114 is:}$ 2 202 Recommended Questions $\text{Halogen family, [Rn]5f}^{14}\text{6d}^{10}\text{7s}^2\text{7p}^5$, $\text{Carbon family, [Rn]5f}^{14}\text{6d}^{10}\text{7s}^2\text{7p}^2$... 2 Edit Delete
7563 $\text{The incorrect statement among the following is:}$ 2 202 Recommended Questions 1, 2... 3 Edit Delete
7562 $\text{The correct order of increasing energy of atomic orbital is:}$ 2 202 Recommended Questions $\text{3s, 3p, 4s, 3d, 4p}$, $\text{3s, 3p, 3d, 4s, 4p}$... 1 Edit Delete
7561 $\text{In a subshell, if the number of radial nodes is two times the number of angular nodes, then the minimum possible value of the principal quantum number (n) is:}$\n\n$\text{[angular nodes are non-zero]}$ 2 202 Recommended Questions $1$, $2$... 4 Edit Delete
7560 $\text{Orbitals having two spherical nodes are:}$ 2 202 Recommended Questions $\text{2s}$, $\text{4s}$... 4 Edit Delete
7559 $\text{Correct statement among the following is:}$ 2 202 Recommended Questions $\text{Number of angular nodes = n - l - 1}$, $\text{Number of radial nodes = l}$... 3 Edit Delete
7558 $\text{Assertion (A): The number of radial nodes in } 3d_{z^2} \text{, is zero.}$\n\n$\text{Reason (R): The number of angular nodes of atomic orbitals is equal to the value of l.}$ 2 202 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
7557 $\text{The correct order of the total number of nodes of atomic orbitals is:}$ 2 202 Recommended Questions $\text{4f} > \text{6s} > \text{5d}$, $\text{6s} > \text{5d} > \text{4f}$... 2 Edit Delete
7556 $\text{The incorrect statement about the nodal plane among the following is:}$ 2 202 Recommended Questions $\text{A plane on which there is a zero probability of finding an electron.}$, $\text{A plane on which there is maximum probability that the electron will be found.}$... 2 Edit Delete
7555 $\text{Assertion (A): All d orbitals are tetra-lobed structures having two nodal planes.}$\n\n$\text{Reason (R): Out of five, only four d-orbitals are degenerate orbitals.}$ 2 202 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 4 Edit Delete
7554 $\text{The rule used to determine the maximum number of electrons in a subshell of an atom is:}$ 2 202 Recommended Questions $4l+2$, $2l+1$... 1 Edit Delete
7553 $\text{The number of electrons with the azimuthal quantum number l = 1 and 2 for } \text{Cr}_{24} \text{ in ground state is}$ 2 202 Recommended Questions $16 \text{ and } 5$, $12 \text{ and } 5$... 2 Edit Delete
7552 $\text{The lowest value of n for 'g' orbitals is:}$ 2 202 Recommended Questions $4$, $5$... 2 Edit Delete
7551 $\text{The number of electrons that can be present in the subshells having } m_s \text{ value of } -\frac{1}{2} \text{ for n = 4 are:}$ 2 202 Recommended Questions $36$, $4$... 3 Edit Delete
7550 $\text{Assertion (A): In the third energy level, there is no f subshell.}$\n\n$\text{Reason (R): For n = 3, the possible values of l are 0, 1, 2 and for f subshell l = 3.}$ 2 202 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
7549 $\text{The maximum number of electrons in a subshell with l = 3 and n = 4 is}$ 2 202 Recommended Questions $14$, $16$... 1 Edit Delete
7548 $\text{A pair of d-orbitals having electron density along the axes is:}$ 2 202 Recommended Questions $d_{z^2}, d_{xz}$, $d_{xz}, d_{zy}$... 3 Edit Delete
7547 $\text{Orbital that does not exist:}$ 2 202 Recommended Questions $\text{6p}$, $\text{2s}$... 3 Edit Delete
7546 $\text{The set of quantum numbers which represent 3p is:}$ 2 202 Recommended Questions $n = 1, l = 0;$, $n = 3; l = 1$... 2 Edit Delete
7545 $\text{The number of electrons that can be fit into the orbital for which n = 3 and l = 1, is:}$ 2 202 Recommended Questions $2$, $6$... 1 Edit Delete
7544 $\text{The quantum number of the most energetic electron in an Ne atom in the first excited state is}$ 2 202 Recommended Questions $2, 1, 0, +\frac{1}{2}$, $3, 1, 1, +\frac{1}{2}$... 3 Edit Delete
7543 $\text{The number of orbitals that are possible at the L-energy level is}$ 2 202 Recommended Questions $2$, $4$... 2 Edit Delete
7542 $\text{The excited state of an H atom emits a photon of wavelength } \lambda \text{ and returns to the ground state. The principal quantum number of the excited state is given by:}$ 2 202 Recommended Questions $\sqrt{\lambda R(\lambda R - 1)}$, $\sqrt{\frac{\lambda R}{(\lambda R - 1)}}$... 2 Edit Delete
7541 $\text{The wave mechanical model of the atom depends upon}$ 2 202 Recommended Questions $\text{De-Broglie concept of dual nature of electron}$, $\text{Heisenberg uncertainty principle}$... 4 Edit Delete
7540 $\text{The angular momentum of electrons in d orbital is equal to:}$ 2 202 Recommended Questions $\sqrt{6} \hbar$, $\sqrt{2} \hbar$... 1 Edit Delete
7539 $\text{The total number of electrons in an atom with the following quantum numbers would be}$ $\text{(a) n = 4, m}_s = -\frac{1}{2}$ $\text{(b) n = 3, l = 0$ 2 202 Recommended Questions $16, 2$, $11, 8$... 1 Edit Delete
7538 $\text{The quantum number not obtained from Schrödinger's wave equation is:}$ 2 202 Recommended Questions $n$, $l$... 4 Edit Delete
7537 $\text{The correct set of four quantum numbers for the valence electron of a rubidium atom (Z = 37) is:}$ 2 202 Recommended Questions $5, 1, 1, +\frac{1}{2}$, $6, 0, 0, +\frac{1}{2}$... 3 Edit Delete
7536 $\text{Which of the following sets of quantum numbers is possible:}$ 2 202 Recommended Questions $\text{n = 0, l = 0, m}_l = 0, \text{m}_s = +\frac{1}{2}$, $\text{n = 1, l = 0, m}_l = 0, \text{m}_s = -\frac{1}{2}$... 2 Edit Delete
7535 $\text{Consider the following sets of quantum numbers:}$ $\begin{array}{|c|c|c|c|c|} \hline & \text{n} & \text{l} & \text{m} & \text{s} \\ \hline \text{(i)} & 3 & 0 & 0 & +1/2 \\ \hline \text{(ii)} & 2 & 2 & 1 & +1/2 \\ \hline \text{(iii)} & 4 & 3 & -2 & -1/2 \\ \hline \text{(iv)} & 1 & 0 & -1 & -1/2 \\ \hline \text{(v)} & 3 & 2 & 3 & +1/2 \\ \hline \end{array}$ $\text{Which of the following sets of quantum numbers is not possible?}$ 2 202 Recommended Questions $\text{ii, iii and iv}$, $\text{i, ii, iii and iv}$... 3 Edit Delete
7534 $\text{Match the quantum numbers with the information provided by them:}$ 2 202 Recommended Questions $\text{A-2, B-4, C-1, D-3}$, $\text{A-1, B-2, C-3, D-4}$... 1 Edit Delete
7533 $\text{The characteristic velocity associated with a neutron that has a wavelength of 800 pm is:}$ 2 202 Recommended Questions $496 \text{ m s}^{-1}$, $567 \text{ m s}^{-1}$... 1 Edit Delete
7532 $\text{The kinetic energy of an electron is } 3.0 \times 10^{-25} \text{ J. Its wave length would be:}$ 2 202 Recommended Questions $8.96 \times 10^{-7} \text{ m}$, $4.37 \times 10^{-6} \text{ m}$... 1 Edit Delete
7531 $\text{The velocity associated with a proton moving at a potential difference of 1000 V is } 4.37 \times 10^5 \text{ ms}^{-1}\text{. If the hockey ball of mass 0.1 kg is moving with this velocity, then the wavelength associated with this velocity would be:}$ 2 202 Recommended Questions $1.52 \times 10^{-38} \text{ m}$, $2.54 \times 10^{-32} \text{ m}$... 1 Edit Delete
7530 $\text{Incorrect statement among the following is:}$ 2 202 Recommended Questions $\text{The uncertainty principle is } \Delta x \cdot \Delta p \geq \frac{h}{4\pi}$, $\text{Half-filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry, and a more balanced arrangement.}$... 1 Edit Delete
7529 $\text{The graphs that represents the variation of momentum of particle with de-Broglie wavelength is:}$ 2 202 Recommended Questions $\text{Graph showing p vs } \lambda \text{ as a straight line with negative slope}$, $\text{Graph showing p vs } \lambda \text{ as a curve with increasing slope}$... 3 Edit Delete
7528 $\text{If the velocity of the electron is } 1.6 \times 10^6 \text{ ms}^{-1}\text{. The de Broglie wavelength associated with this electron is:}$ 2 202 Recommended Questions $590 \text{ pm}$, $455 \text{ pm}$... 4 Edit Delete
7527 $\text{If the velocity of the electron is } 1.6 \times 10^6 \text{ ms}^{-1}\text{. The de Broglie wavelength associated with this electron is:}$ 2 202 Recommended Questions $590 \text{ pm}$, $455 \text{ pm}$... 2 Edit Delete
7526 $\text{The wavelength of an electron moving with a velocity of } 2.05 \times 10^7 \text{ m s}^{-1} \text{ would be:}$ 2 202 Recommended Questions $4.65 \times 10^{-12} \text{ m}$, $3.55 \times 10^{-11} \text{ m}$... 2 Edit Delete
7525 $\text{The largest de Broglie wavelength among the following (all have equal velocity) is:}$ 2 202 Recommended Questions $\text{CO}_2 \text{ molecule}$, $\text{NH}_3 \text{ molecule}$... 3 Edit Delete
7524 $\text{If the position of the electron were measured with an accuracy of } \pm 0.002 \text{ nm, the uncertainty in the momentum of the electron would be:}$ 2 202 Recommended Questions $5.637 \times 10^{-23} \text{ kg m s}^{-1}$, $4.637 \times 10^{-23} \text{ kg m s}^{-1}$... 3 Edit Delete
7523 $\text{If uncertainty in position and momentum are both equal, then uncertainty in velocity will be:}$ 2 202 Recommended Questions $\frac{1}{2m} \sqrt{\frac{h}{\pi}}$, $\sqrt{\frac{h}{2\pi}}$... 1 Edit Delete
7522 $\text{Be}^{3+} \text{ ion and a proton are accelerated by the same potential. The ratio of their de-Broglie wavelengths is}$\n\n$\text{(assume mass of proton = mass of neutron)}$ 2 202 Recommended Questions $1:2$, $1:4$... 4 Edit Delete
7521 $\text{If the size of the first orbit of the hydrogen atom is 5.29 nm, the size of the second orbit of He}^+ \text{ is}$ 2 202 Recommended Questions $2.65 \text{ nm}$, $21.16 \text{ nm}$... 3 Edit Delete
7520 $\text{Assertion (A): The radius of the second orbit of He}^+ \text{ is equal to that of the first orbit of hydrogen.}$\n\n$\text{Reason (R): The radius of an orbit in hydrogen-like species is directly proportional to n and inversely proportional to Z.}$ 2 202 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of the (A).}$, $\text{Both (A) and (R) are True and (R) is not the correct explanation of the (A).}$... 4 Edit Delete
7519 $\text{Given below are two statements:}$\n\n$\text{Assertion (A): Bohr's orbits are also called stationary states.}$\n\n$\text{Reason (R): Electrons are stationary in an orbit.}$\n\n$\text{In light of the above statements, choose the correct answer from the options given below:}$ 2 202 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
7518 $\text{An ion among the following that has the same radius as a hydrogen atom, having n=1, is}$ 2 202 Recommended Questions $\text{He}^{+}, n = 2$, $\text{Li}^{2+}, n = 2$... 3 Edit Delete
7517 $\text{The concept that contradicts the Bohr Model of an atom is:}$ 2 202 Recommended Questions $\text{Rutherford Model}$, $\text{Heisenberg's Uncertainty Principle}$... 2 Edit Delete
7516 $\text{For any H-like system, the ratio of velocities of I, II & III orbit i.e., } V_1 : V_2 : V_3 \text{ will be:}$ 2 202 Recommended Questions $1 : 2 : 3$, $1 : 1/2 : 1/3$... 2 Edit Delete
7515 $\text{Assertion (A): The angular momentum of an electron in an atom is quantized.}$\n\n$\text{Reason (R): In an atom, only those orbits are permitted in which the angular momentum of the electron is a natural number multiple of } h/2\pi.$ 2 202 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
7514 $\text{The energy of an electron in the first Bohr's orbit of an H-atom is -13.6 eV. The possible energy value(s) of the excited state(s) for electrons in Bohr's orbits of hydrogen is (are):}$ 2 202 Recommended Questions $-3.4 \text{ eV}$, $-4.2 \text{ eV}$... 1 Edit Delete
7513 $\text{A dye absorbs a photon of wavelength } \lambda \text{ and re-emits the same energy into two photons of wavelengths } \lambda_1 \text{ and } \lambda_2 \text{ respectively. The wavelength } \lambda \text{ is related to } \lambda_1 \text{ and } \lambda_2 \text{ as:}$ 2 202 Recommended Questions $\lambda = \frac{\lambda_1+\lambda_2}{\lambda_1\lambda_2}$, $\lambda = \frac{\lambda_1\lambda_2}{\lambda_1+\lambda_2}$... 2 Edit Delete
7512 $\text{An absorption line of the lowest frequency in the transition of hydrogen spectra is:}$ 2 202 Recommended Questions $n=1 \text{ to } n=2$, $n=3 \text{ to } n=8$... 2 Edit Delete
7511 $\text{The mass ratio of photons corresponding to the first lines of the Lyman and the Balmer series of the atomic spectrum of hydrogen is :}$ 2 202 Recommended Questions $5 : 27$, $1 : 4$... 3 Edit Delete
7510 $\text{The ionization energy for H atom in the ground state is } 2.18 \times 10^{-18} \text{ J. The process energy requirements will be: } (He^{+}(g) \rightarrow He^{2+}(g) + e^{-})$ 2 202 Recommended Questions $8.72 \times 10^{-18} \text{ J}$, $7.54 \times 10^{-18} \text{ J}$... 1 Edit Delete
7509 $\text{The transition in the He}^{+} \text{ ion in the balmer series that would have the same wave number as the first Lyman line in the hydrogen spectrum is-}$ 2 202 Recommended Questions $2 \rightarrow 1$, $5 \rightarrow 3$... 3 Edit Delete
7508 $\text{The wavelength of the spectral line obtained in the spectrum of Li}^{+2} \text{ when the transition takes place between levels whose sum is 4 and the difference is 2, will be:}$ 2 202 Recommended Questions $11.4 \times 10^{-6} \text{ cm}$, $1.14 \times 10^{-6} \text{ cm}$... 2 Edit Delete
7507 $\text{The wave number for the longest wavelength transition in the Balmer series of atomic hydrogen would be:}$ 2 202 Recommended Questions $1.52 \times 10^6 m^{-1}$, $3.14 \times 10^6 (cm)^{-1}$... 1 Edit Delete
7506 The energy of an electron in an $\text{H}$-atom is given by $E_n = (-2.18 \times 10^{-18})/\text{n}^2 \text{ J}$. The shortest wavelength of light that can be used to remove an electron completely from $\text{n} = 2$ orbit will be: 2 202 Recommended Questions $3647 \mathring{\text{A}}$, $5132 \mathring{\text{A}}$... 1 Edit Delete
7505 Emission transitions in the Paschen series end at orbit $\text{n} = 3$ and start from orbit $\text{n}$ and can be represented as $\nu = 3.29 \times 10^{15} \left( \frac{1}{3^2} - \frac{1}{\text{n}^2} \right) \text{ Hz}$. The value of $\text{n}$ if the transition is observed at $1285 \text{ nm}$ is: 2 202 Recommended Questions 6, 5... 2 Edit Delete
7504 The maximum wavelength in the Lyman series of $\text{He}^{+}$ ion is- 2 202 Recommended Questions $3\text{R}$, $1/(3\text{R})$... 2 Edit Delete
7503 The electronic transition in the hydrogen atom that emits maximum energy is: 2 202 Recommended Questions $2 \rightarrow 1$, $1 \rightarrow 4$... 1 Edit Delete
7502 The transition in the hydrogen spectrum that would have the same wavelength as Balmer transition from $n = 4$ to $n = 2$ of $\text{He}^+$ spectrum is : 2 202 Recommended Questions $n_1 = 3$ to $n_2 = 4$, $n_2 = 3$ to $n_1 = 2$... 4 Edit Delete
7501 The wavelength of light emitted when the electron in a H atom undergoes the transition from an energy level with $n = 4$ to an energy level with $n = 2$, is : 2 202 Recommended Questions $586 \, \text{mm}$, $486 \, \text{nm}$... 2 Edit Delete
7500 The energy associated with the fifth orbit of a hydrogen atom is : 2 202 Recommended Questions $-2.18 \times 10^{-18} \, \text{J}$, $-8.72 \times 10^{-20} \, \text{J}$... 2 Edit Delete
7499 When an electron jumps from n=5 to n=1 in a hydrogen atom, the number of spectral lines obtained is 2 202 Recommended Questions 3, 4... 4 Edit Delete
7498 The wavelength of the radiation emitted when in a H atom, the electron falls from infinity to stationary state (n=1), is: 2 202 Recommended Questions 15 $nm$, 192 $nm$... 4 Edit Delete
7497 The ratio of the wavelengths of the last lines of the Balmer to Lyman series is 2 202 Recommended Questions 4:1, 27:5... 1 Edit Delete
7496 Determine the maximum number of emission lines produced when an electron in a hydrogen atom transitions from the $n = 6$ energy level to the ground state: 2 202 Recommended Questions 30, 21... 3 Edit Delete
7495 The ratio of slopes of $K_{\text{max}}$ vs. $v$ and $V_0$ vs. $v$ curves in photoelectric effect gives - ($v$=frequency, $K_{\text{max}}= \text{maximum kinetic energy}$, $V_0$=stopping potential): 2 202 Recommended Questions Charge of electron, Planck's constant... 1 Edit Delete
7494 The ejection of the photoelectron from the silver metal can be stopped by applying a voltage of 0.35 eV when the radiation having a wavelength of 256.7 nm is used. The work function for silver metal is: 2 202 Recommended Questions 3.40 eV, 5.18 eV... 3 Edit Delete
7493 A photon with an initial frequency of $10^{11} \, \text{Hz}$ scatters off an electron at rest. Its final frequency is $0.9 \times 10^{11} \, \text{Hz}$. The speed of scattered electron is close to: 2 202 Recommended Questions $3 \times 10^2 \, \text{ms}^{-1}$, $3.8 \times 10^3 \, \text{ms}^{-1}$... 2 Edit Delete
7492 When a photon with a wavelength of $150$ pm strikes an atom, one of its inner bound electrons is ejected at a velocity of $1.5 \times 10^7 \, \text{m} \, \text{s}^{-1}$. The energy with which it is bound to the nucleus would be: 2 202 Recommended Questions $32.22 \times 10^{-16} \, \text{J}$, $12.22 \times 10^{-16} \, \text{J}$... 2 Edit Delete
7491 The work function for the Cesium atom is 1.9 eV. The threshold frequency of the radiation is: 2 202 Recommended Questions $4.59 \times 10^{14} \, \text{s}^{-1}$, $8.59 \times 10^{14} \, \text{s}^{-1}$... 1 Edit Delete
7490 A photon of wavelength $4 \times 10^{-7}$ m strikes a metal surface, the work function of the metal being 2.13 eV. The kinetic energy of emission would be: 2 202 Recommended Questions 0.97 eV, 97 eV... 1 Edit Delete
7489 The photoelectric emission from a surface starts only when the light incident upon the surface has a certain minimum: 2 202 Recommended Questions Intensity, Wavelength... 3 Edit Delete
7488 Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength $6800$ Å. The work function $(W_0)$ of the metal is: 2 202 Recommended Questions $3.109 \times 10^{-20} \, \text{J}$, $2.922 \times 10^{-19} \, \text{J}$... 2 Edit Delete
7487 Electromagnetic radiation of wavelength $242$ nm is just sufficient to ionise sodium atom. The ionisation energy of sodium in kJ mol$^{-1}$ is : 2 202 Recommended Questions $494$, $4.94$... 1 Edit Delete
7486 $\text{Assertion (A): A black body is an ideal body that emits and absorbs radiation of all frequencies.}$\n\n$\text{Reason (R): The frequency of radiation emitted by a body goes from lower frequency to a higher frequency with an increase in temperature.}$ 2 202 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
7485 $\text{A radiation source emitted } 2.5 \times 10^{15} \text{ photons in 2 nanoseconds. Energy of the source is :}$ 2 202 Recommended Questions $8.28 \times 10^{-10} \text{ J}$, $8.24 \times 10^{10} \text{ J}$... 1 Edit Delete
7484 $\text{The number of photons of light with a wavelength of 4000 pm that provide 1J of energy would be:}$ 2 202 Recommended Questions $2.01 \times 10^{16}$, $2.01 \times 10^{19}$... 1 Edit Delete
7483 $\text{A 25-watt bulb emits monochromatic yellow light with a wave length of 0.57μm. The rate of emission of quanta per second would be:}$ 2 202 Recommended Questions $7.17 \times 10^{-19} \text{ s}^{-1}$, $4.13 \times 10^{16} \text{ s}^{-1}$... 3 Edit Delete
7482 $\text{The wavelength of the light emitted when the electron returns to the ground state in the H atom, from n = 5 to n = 1, would be: (The ground-state electron energy is } -2.18 \times 10^{-18} \text{ j)}$ 2 202 Recommended Questions $\text{Wavelength} = 9.498 \times 10^{-8} \text{ km}$, $\text{Wavelength} = 12.498 \times 10^{-8} \text{ m}$... 3 Edit Delete
7481 $\text{The neon gas emits radiation of 616 nm. The number of quanta that are present in 2 J of energy is:}$ 2 202 Recommended Questions $6.2 \times 10^{-18}$, $5.6 \times 10^{17}$... 3 Edit Delete
7480 $\text{If the photon detector receives a total of } 3.15 \times 10^{-18} \text{ J from the radiation of 600 nm, the number of photons received by the detector would be:}$ 2 202 Recommended Questions $10^2$, $10$... 2 Edit Delete
7479 $\text{A nitrogen laser produces radiation at a wavelength of 337.1 nm. If the number of photons emitted is } 5.6 \times 10^{24}\text{, the power of the laser is:}$ 2 202 Recommended Questions $4.56 \times 10^7 \text{ J}$, $3.33 \times 10^6 \text{ J}$... 2 Edit Delete
7478 $\text{Photons of wavelength 4000 } \text{Å} \text{ are used to break } \text{I}_2 \text{ molecules. The percentage of energy converted to the kinetic energy of atoms will be:}$ $\text{(bond dissociation energy of the molecule is 246.5 kJ/mol)}$ 2 202 Recommended Questions $12\%$, $8\%$... 4 Edit Delete
7477 $\text{The correct arrangement of the following electromagnetic spectrum in the increasing order of frequency is:}$ 2 202 Recommended Questions $\text{Cosmic rays} < \text{Amber light} < \text{Radiation of FM radio} < \text{X-rays} < \text{Radiation from microwave ovens}$, $\text{Radiation from FM radio} < \text{Radiation from microwave oven} < \text{Amber light} < \text{X-rays} < \text{Cosmic rays}$... 2 Edit Delete
7476 $\text{Match the following electromagnetic radiations with their corresponding frequencies:}$ $\text{Column I:}$ $\text{A. X-rays}$ $\text{B. Ultraviolet wave (UV)}$ $\text{C. Long radio waves}$ $\text{D. Microwave}$ $\text{Column II:}$ $\text{1. } \nu = 10^0 - 10^4 \text{ Hz}$ $\text{2. } \nu = 10^{10} \text{ Hz}$ $\text{3. } \nu = 10^{16} \text{ Hz}$ $\text{4. } \nu = 10^{18} \text{ Hz}$ 2 202 Recommended Questions $\text{A-4, B-1, C-3, D-2}$, $\text{A-1, B-4, C-2, D-3}$... 4 Edit Delete
7475 $\text{The energies E}_1 \text{ and E}_2 \text{ of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths } (\lambda_1 \text{ and } \lambda_2) \text{ will be:}$ 2 202 Recommended Questions $\lambda_1 = 2\lambda_2$, $\lambda_1 = 4\lambda_2$... 1 Edit Delete
7474 $\text{The energy of the photon with a frequency of } 3 \times 10^{15} \text{ Hz is:}$ 2 202 Recommended Questions $1.988 \times 10^{-18} \text{ J}$, $1.588 \times 10^{-18} \text{ J}$... 1 Edit Delete
7473 $\text{The unpaired electrons in Al and Si are present in the 3p orbital. The electrons that will experience a more effective nuclear charge from the nucleus are:}$ 2 202 Recommended Questions $\text{Electrons in the 3p orbital of silicon}$, $\text{Electrons in the 5d orbital of aluminium}$... 1 Edit Delete
7472 $\text{The total number and mass of neutrons in 7 mg of }^{14}\text{C would be:}$ $\text{(Assume that mass of a neutron} = 1.675 \times 10^{-27} \text{ kg)}$ 2 202 Recommended Questions $2.41 \times 10^{21}, 4.03 \times 10^{-6} \text{ kg}$, $6.23 \times 10^{23}, 1.67 \times 10^{-21} \text{ kg}$... 1 Edit Delete
7471 $\text{The total number of electrons present in one mole of methane is:}$ 2 202 Recommended Questions $6.023 \times 10^{23}$, $6.023 \times 10^{24}$... 2 Edit Delete
7470 $\text{Assertion (A): All isotopes of a given element show the same type of chemical behaviour.}$ $\text{Reason (R): The chemical properties of an atom are controlled by the number of electrons in the atom.}$ 2 202 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
7469 $\text{An ion with a mass number of 56 contains 3 units of positive charge and 30.4% more neutrons than electrons. The symbol of the ion is:}$ 2 202 Recommended Questions $^{56}_{26}\text{Fe}^{+3}$, $^{57}_{26}\text{Fe}^{+3}$... 1 Edit Delete
7468 $\text{An element with a mass number of 81 contains 31.7% more neutrons as compared to protons. The atomic symbol of the element would be:}$ 2 202 Recommended Questions $^{81}_{35}\text{Br}$, $^{81}_{36}\text{Br}$... 1 Edit Delete
7467 $\text{An atom forms an ion by losing three electrons. The ion has an electronic configuration [Ar]3d}^6\text{. The symbol of the ion is:}$ 2 202 Recommended Questions $\text{Fe}^{3+}$, $\text{Ni}^{3+}$... 3 Edit Delete
7466 $\text{The mass and charge of one mole of electrons are, respectively:}$ 2 202 Recommended Questions $5.48 \times 10^{-7} \text{ kg, } 9.65 \text{ C}$, $5.48 \times 10^{-7} \text{ C, } 1.098 \times 10^{27}$... 3 Edit Delete
7465 $\text{Which among the following are isoelectronic species?}$ 2 202 Recommended Questions $\text{Na}^+, \text{K}^+, \text{Ca}^{2+}, \text{Mg}^{2+}$, $\text{Ca}^{2+}, \text{Mg}^{2+}, \text{S}^{2-}, \text{K}^+$... 3 Edit Delete
7464 $\text{The electron of a Br atom that experiences the lowest effective nuclear charge is:}$ 2 202 Recommended Questions $2p \text{ and } 3p$, $4p$... 2 Edit Delete
7463 $\text{The number of electrons in } {}_{19}\text{K} \text{ with quantum numbers n=3; l=0 is/are:}$ 2 202 Recommended Questions $2$, $1$... 1 Edit Delete
7462 $\text{Which of the following has greater number of electrons than neutrons?}$ 2 202 Recommended Questions $\text{Al}^{3+}$, $\text{O}^{2-}$... 2 Edit Delete
7461 $\text{The number of protons, neutrons and electrons in } {}^{175}_{71}\text{Lu} \text{ respectively, are:}$ 2 202 Recommended Questions $104, 71 \text{ and } 71$, $71, 71 \text{ and } 104$... 4 Edit Delete
7460 $\text{The charge on the oil drop is } -1.282 \times 10^{-18} \text{C. The number of electrons present in it would be:}$ 2 202 Recommended Questions $15$, $8$... 2 Edit Delete
7459 $\text{An atom of an element contains 29 electrons and 35 neutrons. The number of protons in the element would be:}$ 2 202 Recommended Questions $29$, $35$... 1 Edit Delete
7458 $\text{Property which is same for the following species is:}$ $\text{N}^{3-}, \text{O}^{2-}, \text{F}^-, \text{Na}^+, \text{Mg}^{2+} \text{ and } \text{Al}^{3+}$ 2 202 Recommended Questions $\text{Ionic radii}$, $\text{Number of electrons}$... 2 Edit Delete
7457 $\text{The complete symbol for the atom with the given atomic number (Z) and atomic mass (A) would be, respectively:}$ $\text{i. Z = 17, A = 35}$ $\text{ii. Z = 92, A = 233}$ $\text{iii. Z = 4, A = 9}$ 2 202 Recommended Questions ${}^9\text{Be}_4 \quad {}^{233}\text{U}_{92} \quad {}^9\text{Be}_4$, ${}^{35}\text{Cl}_{17} \quad {}^{233}\text{U}_{92} \quad {}^9\text{Be}_4$... 2 Edit Delete
7456 $\text{The maximum number of neutrons are present in the nuclei of:}$ 2 202 Recommended Questions ${}^{16}\text{O}_8$, ${}^{24}\text{Mg}_{12}$... 4 Edit Delete
7455 $\text{The number of electrons in the species } \text{H}_2^+, \text{H}_2, \text{O}_2^+, \text{ are respectively:}$ 2 202 Recommended Questions $15, 2, 1$, $15, 1, 2$... 3 Edit Delete
7454 $\text{The incorrect statement regarding the characteristics of X-rays is:}$ 2 202 Recommended Questions $\text{The radiation can ionize the gas}$, $\text{It causes a fluorescence effect on ZnS}$... 3 Edit Delete
7453 $\text{In Rutherford's experiment, generally, the thin foil of heavy atoms like gold, platinum, etc. have been used to be bombarded by the α-particles.}$ $\text{If the thin foil of light atoms like aluminum etc. is used in Rutherford's experiment, the difference that would be observed from the above results is:}$ 2 202 Recommended Questions $\text{The same results will be observed.}$, $\text{More deflection would be observed.}$... 3 Edit Delete
7452 $\text{The wave number of a light whose time period is } 2.0 \times 10^{-10} \text{ s would be:}$ 2 202 Recommended Questions $16.66 \text{ m}^{-1}$, $1.66 \text{ m}^{-1}$... 1 Edit Delete
7451 6 2 202 Recommended Questions 1, 2... 4 Edit Delete
7450 $2 \times 10^8 \text{ atoms of carbon are arranged side by side. The radius of a carbon atom if the length of this arrangement is 2.4 cm would be:}$ 2 202 Recommended Questions $7.0 \times 10^{-11} \text{ m}$, $5.0 \times 10^{-11} \text{ m}$... 4 Edit Delete
7449 $\text{The diameter of a zinc atom is 2.6 Å. If zinc atoms are arranged side by side lengthwise, number of atoms present in a length of 1.6 cm would be:}$ 2 202 Recommended Questions $5.153 \times 10^7$, $6.153 \times 10^7$... 2 Edit Delete
7448 $\text{If the diameter of a carbon atom is 0.15 nm, the number of carbon atoms that can be placed side by side in a straight line across the length of the scale of length 20 cm long will be:}$ 2 202 Recommended Questions $1.33 \times 10^7$, $5.46 \times 10^8$... 3 Edit Delete
7447 $\text{A certain particle carries } 2.5 \times 10^{-16} \text{ C of static electric charge. The number of electrons present in it would be:}$ 2 202 Recommended Questions $1460$, $1350$... 3 Edit Delete
7446 $\text{Symbols } ^{79}_{35}\text{Br} \text{ and } ^{79}\text{Br} \text{ can be written, whereas symbols } ^{35}_{79}\text{Br} \text{ and } ^{35}\text{Br} \text{ are not acceptable because:}$ 2 202 Recommended Questions $\text{The general convention for representing an element along with its atomic number (A) and atomic mass (Z) is } ^{A}_{Z}\text{X}$, $\text{The general convention for representing an element along with its atomic mass (A) and atomic number (Z) is } ^{A}_{Z}\text{X}$... 2 Edit Delete
7445 $0.50 \text{ mol } \text{Na}_2\text{CO}_3 \text{ and } 0.50 \text{ M } \text{Na}_2\text{CO}_3 \text{ are different because:}$ 2 201 Recommended Questions $\text{Both have different amounts of } \text{Na}_2\text{CO}_3.$, $\text{0.50 mol is the number of moles and 0.50 M is the molarity.}$... 2 Edit Delete
7444 \text{Match the following physical quantities with units:} \text{A. Molarity - 2. mol/L} \text{B. Molality - 1. mol/kg} \text{C. Pressure - 4. Pascal} \text{D. Luminous intensity - 3. Candela} 2 201 Recommended Questions $\text{A-1, B-4, C-2, D-3}$, $\text{A-2, B-1, C-4, D-3}$... 2 Edit Delete
7443 $\text{The mass of carbon present in 0.5 mole of K}_4\text{[Fe(CN)}_6\text{] is:}$ 2 201 Recommended Questions $1.8 \text{ g}$, $18 \text{ g}$... 4 Edit Delete
7442 $\begin{array}{|l|l|}\hline\text{Assertion (A):} & \text{The number of molecules in 2 moles of NH}_3\text{ is equal to the}\\& \text{number of molecules in 4 moles of CH}_4.\\\hline\text{Reason (R):} & \text{Both are chemically similar species.}\\\hline\end{array}$ 2 201 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 4 Edit Delete
7441 $\text{The weight of 1}\times10^{23} \text{ molecules of CuSO}_4\text{·5H}_2\text{O is:}$ 2 201 Recommended Questions $34.42 \text{ g}$, $41.42 \text{ g}$... 2 Edit Delete
7440 $\text{Which of the following is dependent on temperature?}$ $\begin{array}{|c|c|c|c|}\hline\text{1.} & \text{Molarity} & \text{2.} & \text{Mole fraction} \\ \hline\text{3.} & \text{Weight percentage} & \text{4.} & \text{Molality} \\ \hline\end{array}$ 2 201 Recommended Questions $\text{Molarity}$, $\text{Mole fraction}$... 1 Edit Delete
7439 $20 \text{ g of sugar is dissolved in enough water to make a final volume of 2L. The concentration of sugar } (\text{C}_{12}\text{H}_{22}\text{O}_{11}) \text{ in mol L}^{-1} \text{ will be:}$ 2 201 Recommended Questions $0.29 \text{ mol/L}$, $0.029 \text{ mol/L}$... 2 Edit Delete
7438 $\text{Concentrated aqueous sulphuric acid is 98\% H}_2\text{SO}_4\text{ by mass and has a density}$ $\text{of 1.80 g mL}^{-1}\text{. The volume of acid required to make one litre of 0.1 M}$ $\text{H}_2\text{SO}_4\text{ solution is:}$ 2 201 Recommended Questions $11.10 \text{ mL}$, $16.65 \text{ mL}$... 4 Edit Delete
7437 109 2 201 Recommended Questions 1, 2... 4 Edit Delete
7436 $\text{A partially dried clay mineral contains 8\% water. The original sample contained 12\% water and 45\% silica. The percentage of silica in the partially dried sample is nearly:}$ 2 201 Recommended Questions $50\%$, $49\%$... 4 Edit Delete
7435 The chloroform contamination level in water is 15 ppm (by mass of chloroform). The molality of chloroform in the water sample would be: 2 201 Recommended Questions $3.25 \times 10^{-4}$, $1.5 \times 10^{-3}$... 4 Edit Delete
7434 The molality of a 15\% (w/vol.) solution of $\text{H}_2\text{SO}_4$ of density 1.1g/cm$^3$ is- 2 201 Recommended Questions 1.2, 1.4... 4 Edit Delete
7433 Concentrated nitric acid is 70\% $\text{HNO}_3$. The amount of concentrated nitric acid solution that should be used to prepare 250 mL of 2.0 M $\text{HNO}_3$ would be: 2 201 Recommended Questions \text{90.0 g conc. HNO}_3, \text{70.0 g conc. HNO}_3... 4 Edit Delete
7432 The mass of $\text{CaCO}_3$ required to react completely with 25 mL of 0.75 M $\text{HCl}$ according to the given reaction would be:\n\n$\text{CaCO}_{3(s)} + \text{HCl}_{(aq)} \rightarrow \text{CaCl}_{2(aq)} + \text{CO}_{2(g)} + \text{H}_2\text{O}_{(l)}$ 2 201 Recommended Questions 0.36 g, 0.09 g... 3 Edit Delete
7431 If the density of methanol is 0.793 kg L$^{-1}$, the volume needed for making 2.5 L of its 0.25 M solution would be: 2 201 Recommended Questions 22.25 mL, 24.78 mL... 3 Edit Delete
7430 The total molarity of all the ions present in 0.1 M of $\text{CuSO}_4$ and 0.1 M of $\text{Al}_2(\text{SO}_4)_3$ solution is: 2 201 Recommended Questions 0.2 M, 0.7 M... 3 Edit Delete
7429 The molality of a 20\% (by mass) $\text{CaCO}_3$ solution is : \n(Given: Density of solution is 1.2 gm/ml) 2 201 Recommended Questions 1.25 m, 2.5 m... 2 Edit Delete
7428 The density of a 2 M aqueous solution of $\text{NaOH}$ is 1.28 g/$cm^3$. The molality of the solution is:\n[molecular mass of $\text{NaOH} = 40 \text{ gmol}^{-1}$] 2 201 Recommended Questions 1.20 m, 1.56 m... 2 Edit Delete
7427 $\text{The volume occupied by one water molecule (density} = 1 \text{ g cm}^{-3}\text{) is:}$ 2 201 Recommended Questions $9.0 \times 10^{-23} \text{ cm}^3$, $6.023 \times 10^{-23} \text{ cm}^3$... 3 Edit Delete
7426 $\text{If 4 g of NaOH dissolves in 36 g of H}_2\text{O, the molarity of the solution is: (specific gravity of solution is 1 g mL}^{-1}\text{) :}$ 2 201 Recommended Questions $3 \text{ M}$, $3.5 \text{ M}$... 3 Edit Delete
7425 $25.3 \text{ g of sodium carbonate, } \text{Na}_2\text{CO}_3\text{, is dissolved in enough water to make } 250 \text{ mL of a solution. If sodium carbonate completely dissociates, the molar concentrations of sodium ion, } \text{Na}^+ \text{ and carbonate ion, } CO_3^{2-} \text{ are respectively:}$ $(\text{molar mass of } \text{Na}_2\text{CO}_3 = 106 \text{ g mol}^{-1})$ 2 201 Recommended Questions $0.955 \text{ M and } 1.910 \text{ M}$, $1.910 \text{ M and } 0.955 \text{ M}$... 3 Edit Delete
7424 $\text{The number of molecules of H}_2\text{SO}_4 \text{ present in 100 mL of 0.02 M H}_2\text{SO}_4 \text{ solution are:}$ 2 201 Recommended Questions $12.044 \times 10^{20} \text{ molecules}$, $6.022 \times 10^{23} \text{ molecules}$... 2 Edit Delete
7423 $\text{The molality of pure water is:}$ 2 201 Recommended Questions $1 \text{ m}$, $18 \text{ m}$... 1 Edit Delete
7422 $\text{Which of the following is dependent on temperature?}$ 2 201 Recommended Questions $\text{Molarity}$, $\text{Mole fraction}$... 3 Edit Delete
7421 $\text{At STP, the density of CCl}_4 \text{ vapour in g/L will be closest to:}$ 2 201 Recommended Questions $8.67$, $6.87$... 1 Edit Delete
7420 $\text{If 500 mL of a 5 M solution is diluted to 1500 mL, the molarity of the resultant solution is:}$ 2 201 Recommended Questions $1.5 \text{ M}$, $1.66 \text{ M}$... 2 Edit Delete
7419 $\text{The vapour density of a mixture containing } \text{NO}_2 \text{ and } \text{N}_2\text{O}_4 \text{ is } 38.3. \text{ The mole of } \text{NO}_2 \text{ in a } 100 \text{ g mixture is:}$ $[\text{Vapour density} = (\text{Molar mass} / 2)]$ 2 201 Recommended Questions $0.437$, $0.347$... 2 Edit Delete
7418 $\text{When 50 mL of a 16.9\% (w/v) solution of AgNO}_3 \text{ is mixed with 50 mL of 5.8\% (w/v) NaCl solution, then the mass of precipitate formed is:}$ $(\text{Ag} = 107.8, \text{ N} = 14, \text{ O} = 16, \text{ Na}= 23, \text{ Cl}=35.5)$ 2 201 Recommended Questions $28 \text{ g}$, $3.5 \text{ g}$... 1 Edit Delete
7417 $\text{1 g of magnesium is burnt with 0.56g of oxygen in a closed vessel. The left-out reactant and its quantity are}$ $(\text{At. weight of Mg} = 24, \text{O}=16)$ 2 201 Recommended Questions $\text{Mg, 0.16g}$, $\text{O}_2\text{, 0.16g}$... 3 Edit Delete
7416 $\text{One mole of a mixture of CO and CO}_2 \text{ requires exactly 20g of NaOH in solution for the complete conversion of all the CO}_2 \text{ into Na}_2\text{CO}_3\text{. How much NaOH would it require for conversion into Na}_2\text{CO}_3\text{, if the mixture (one mole) is completely oxidised to CO}_2\text{?}$ 2 201 Recommended Questions $60\text{ g}$, $80\text{ g}$... 1 Edit Delete
7415 $\text{Sulphur burns according to the reaction}$ $\frac{1}{8}\text{S}_8\text{(s)}+\text{O}_2\text{(g)} \rightarrow \text{SO}_2\text{(g)}$ $\text{What volume of air, at 1 atm and 273 K, containing 21\% oxygen by volume is required to completely burn sulphur (S}_8\text{) present in 200 g of the sample?}$ $\text{(This sample contains 20\% inert material which does not burn)}$ 2 201 Recommended Questions $23.52 \text{ litre}$, $320 \text{ litre}$... 2 Edit Delete
7414 $\text{The sulphate of the metal M contains } 9.87\% \text{ of M. This sulphate is isomorphous with } \text{ZnSO}_4 \cdot 7\text{H}_2\text{O}. \text{ The atomic weight of M is:}$ 2 201 Recommended Questions $40.3$, $36.3$... 4 Edit Delete
7413 $\begin{array}{|l|l|}\hline \text{Assertion (A):} & \text{When 4 moles of H}_2 \text{ reacts with 2 moles of O}_2\text{, then 4 moles of} \\ & \text{water are formed.} \\\hline \text{Reason (R):} & \text{O}_2 \text{ will act as a limiting reagent.} \\\hline\end{array}$ 2 201 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 3 Edit Delete
7412 $\text{On reduction with CO, } 200 \text{ kg of iron ore } (\text{Fe}_2\text{O}_3) \text{ containing } 20\% \text{ impurities gives iron. The amount of iron produced will be-}$ 2 201 Recommended Questions $84 \text{ kg}$, $200 \text{ kg}$... 3 Edit Delete
7411 $\text{Amount of HCl that would react with } 5.0 \text{ g of manganese dioxide, as per the given reaction will be:}$ $4\text{HCl}_{(aq)} + \text{MnO}_{2(s)} \rightarrow 2\text{H}_2\text{O}_{(l)} + \text{MnCl}_{2(aq)} + \text{Cl}_{2(g)}$ 2 201 Recommended Questions $4.8 \text{ g}$, $6.4 \text{ g}$... 4 Edit Delete
7410 $\text{A mixture of } 2.3 \text{ g formic acid and } 4.5 \text{ g oxalic acid is treated with conc. } \text{H}_2\text{SO}_4\text{. The evolved gaseous mixture is passed through KOH pellets.}\n\n\text{Weight (in g) of the remaining product at STP will be:}$ 2 201 Recommended Questions $1.4$, $3.0$... 4 Edit Delete
7409 $10 \text{ g of hydrogen and } 64 \text{ g of oxygen were filled in a steel vessel and exploded. The amount of water produced in this reaction will be:}$ 2 201 Recommended Questions $2 \text{ mol}$, $3 \text{ mol}$... 3 Edit Delete
7408 $\text{Consider the given reaction, } 2\text{SO}_2 + \text{O}_2 \rightarrow 2\text{SO}_3$\n\n$\text{6.4 g } \text{SO}_2 \text{ and 3.2 g } \text{O}_2 \text{ to form } \text{SO}_3 \text{. The mass of } \text{SO}_3 \text{ formed is:}$ 2 201 Recommended Questions $32 \text{ g}$, $16 \text{ g}$... 3 Edit Delete
7407 $\text{In the reaction, } 4\text{NH}_3\text{(g)} + 5\text{O}_2\text{(g)} \rightarrow 4\text{NO(g)} + 6\text{H}_2\text{O(l)}$\n\n$\text{When 1 mole of ammonia and 1 mole of } \text{O}_2 \text{ reacts to completion, then:}$ 2 201 Recommended Questions $\text{1.0 mole of } \text{H}_2\text{O is produced.}$, $\text{1.0 mole of NO will be produced.}$... 3 Edit Delete
7406 $\text{10 g of a silver coin, when dissolved completely in excess of conc. } \text{HNO}_3 \text{ gives 8.5 g of silver nitrate.}$\n\n$\text{The percentage purity of the coin is:}$\n\n$\text{(Molar mass of silver is 108 g)}$ 2 201 Recommended Questions $25\%$, $54\%$... 3 Edit Delete
7405 $\text{25.4 g of } \text{I}_2 \text{ and 14.2 g of } \text{Cl}_2 \text{ are made to react completely to yield a mixture of ICl and } \text{ICl}_3\text{. The mole of ICl and } \text{ICl}_3 \text{ formed, is respectively -}$ 2 201 Recommended Questions $0.5, 0.2$, $0.1, 0.1$... 2 Edit Delete
7404 $\text{The volume of oxygen gas (} \text{O}_2 \text{) needed to completely burn 1 L of propane gas (} \text{C}_3\text{H}_8 \text{) (both } \text{O}_2 \text{ \& propane measured at } 0^{\circ}\text{C and 1 atm) will be:}$ 2 201 Recommended Questions $7 \text{ L}$, $6 \text{ L}$... 2 Edit Delete
7403 $\text{Suppose the elements X and Y combine to form two compounds } \text{XY}_2 \text{ and } \text{X}_3\text{Y}_2\text{. If 0.1 mole of } \text{XY}_2 \text{ weighs 10 g and 0.05 mole of } \text{X}_3\text{Y}_2 \text{ weighs 9 g, the atomic weight of X and Y respectively, will be:}$ 2 201 Recommended Questions $40, 30$, $60, 40$... 3 Edit Delete
7402 $\text{To produce 20 moles of ammonia via Haber's process, how many moles of hydrogen molecules are required?}$ 2 201 Recommended Questions $40 \text{ mol}$, $10 \text{ mol}$... 1 Edit Delete
7401 $\text{If 10 volumes of } \text{H}_2 \text{ gas react with 5 volumes of } \text{O}_2 \text{ gas, the volumes of water vapor produced would be:}$ 2 201 Recommended Questions $9$, $8$... 4 Edit Delete
7400 $\text{If 10 volumes of } \text{H}_2 \text{ gas react with 5 volumes of } \text{O}_2 \text{ gas, the volumes of water vapor produced would be:}$ 2 201 Recommended Questions $9$, $8$... 3 Edit Delete
7399 $\text{In the Haber process, 30 L of dihydrogen and 30 L of dinitrogen were taken for the reaction, which yielded only 50\% of the expected product. The composition of the gaseous mixture under the said conditions at the end is:}$ 2 201 Recommended Questions $\text{20 L ammonia, 10 L nitrogen, 30 L hydrogen}$, $\text{20 L ammonia, 25 L nitrogen, 15 L hydrogen}$... 4 Edit Delete
7398 $\text{The moles of lead (II) chloride that will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl are:}$ 2 201 Recommended Questions $0.044$, $0.333$... 4 Edit Delete
7397 $\text{20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g of magnesium oxide.}$\n\n$\text{The percentage purity of magnesium carbonate in the sample is:}$\n\n$\text{(Atomic weight of Mg = 24)}$ 2 201 Recommended Questions $75$, $96$... 4 Edit Delete
7396 $\text{In a reaction } \text{A} + \text{B}_2 \rightarrow \text{AB}_2\text{, A will act as a limiting reagent if:}$\n\n$\text{i. 300 atoms of A reacts with 200 molecules of B}_2$\n\n$\text{ii. 2 moles A reacts with 3 moles B}_2$\n\n$\text{iii. 100 atoms of A reacts with 100 molecules of B}_2$\n\n$\text{iv. 5 moles A reacts with 2.5 moles B}_2$\n\n$\text{v. 2.5 moles A reacts with 5 moles B}_2$\n\n$\text{Choose the correct option:}$ 2 201 Recommended Questions $\text{(i), (ii)}$, $\text{(i), (ii), (v)}$... 3 Edit Delete
7395 $\text{If 0.5 moles of } \text{BaCl}_2 \text{ is reacted with 0.2 moles of } \text{Na}_3\text{PO}_4 \text{ then the maximum moles of } \text{Ba}_3\text{(PO}_4\text{)}_2 \text{ formed is:}$ 2 201 Recommended Questions $0.33$, $0.25$... 3 Edit Delete
7394 $\text{The mass of ammonia produced when } 2.00 \times 10^3 \text{ g dinitrogen reacts with } 1.00 \times 10^3 \text{ g of dihydrogen is:}$ 2 201 Recommended Questions $2338.11 \text{ g}$, $2428.57 \text{ g}$... 2 Edit Delete
7393 $\text{In a closed vessel, 50 ml of } \text{A}_2\text{B}_3 \text{ completely reacts with 200 ml of } \text{C}_2 \text{ according to the following equation:}$\n\n$2\text{A}_2\text{B}_3\text{(g)} + 5\text{C}_2\text{(g)} \rightarrow 3\text{C}_3\text{B}_2\text{(g)} + \text{CA}_4\text{(g)}$\n\n$\text{The composition of the gaseous mixture in the system will be:}$ 2 201 Recommended Questions $100 \text{ ml } \text{C}_2\text{, } 50 \text{ ml } \text{C}_3\text{B}_2\text{, } 50 \text{ ml } \text{CA}_4$, $25 \text{ ml } \text{C}_2\text{, } 75 \text{ ml } \text{C}_3\text{B}_2\text{, } 25 \text{ ml } \text{CA}_4$... 3 Edit Delete
7392 $\text{When 22.4 L of } \text{H}_2 \text{ (g) is mixed with 11.2 L of } \text{Cl}_2 \text{ (g), each at STP, the moles of } \text{HCl(g)} \text{ formed is equal to - }$ 2 201 Recommended Questions $1 \text{ mole of } \text{HCl} \text{ (g)}$, $2 \text{ moles of } \text{HCl} \text{ (g)}$... 1 Edit Delete
7391 $\text{Assertion (A): In Haber's process, starting with 5 moles of } \text{N}_2 \text{ and 2.5 mol of } \text{H}_2\text{, on complete reaction only 1.66 moles of } \text{NH}_3 \text{ were produced.}$\n\n$\text{Reason (R): } \text{H}_2 \text{ acts as a limiting reagent in this reaction.}$ 2 201 Recommended Questions $\text{Both (A) and (R) are true and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are true but (R) is not the correct explanation of (A).}$... 1 Edit Delete
7390 $\text{On complete decomposition, the volume of } \text{CO}_2 \text{ released at STP on heating } 9.85 \text{ g of } \text{BaCO}_3 \text{ (atomic mass, Ba = 137) will be:}$ 2 201 Recommended Questions $1.12 \text{ L}$, $4.84 \text{ L}$... 1 Edit Delete
7389 $\text{The amount of Zinc (atomic weight = 65) necessary to produce 224 mL of } \text{H}_2 \text{ (at STP) by the reaction with dilute sulphuric acid will be:}$ 2 201 Recommended Questions $0.65 \text{ g}$, $7.6 \text{ g}$... 1 Edit Delete
7388 $\text{The hydrated salt, Na}_2\text{SO}_4\text{.nH}_2\text{O, undergoes a 55\% loss in mass on heating and becomes anhydrous. The value of n will be:}$ 2 201 Recommended Questions $5$, $3$... 4 Edit Delete
7387 $\text{If 2.74 g of the metal oxide contains 1.53 g of metal, then the empirical formula of vanadium oxide is:}$ $(\text{Atomic Mass of V} = 52)$ 2 201 Recommended Questions $\text{V}_2\text{O}_3$, $\text{VO}$... 3 Edit Delete
7386 $\text{In an iron oxide, the mass percent of iron and oxygen are 69.9 and 30.1, respectively. The empirical formula of the oxide of iron will be:}$ 2 201 Recommended Questions $\text{Fe}_3\text{O}_2$, $\text{Fe}_2\text{O}_2$... 3 Edit Delete
7385 $\text{Assertion (A):}$ $\text{The empirical mass of ethene is half of its molecular mass.}$ $\text{Reason (R):}$ $\text{The empirical formula represents the simplest whole-number ratio of the various atoms present in a compound.}$ 2 201 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
7384 $\text{An organic compound contains carbon, hydrogen, and oxygen. Its elemental analysis gave C, 38.71\%, and H, 9.67\%. The empirical formula of the compound would be:}$ 2 201 Recommended Questions $\text{CH}_3\text{O}$, $\text{CH}_2\text{O}$... 1 Edit Delete
7383 $\text{On complete combustion, 44 g of a sample of a compound gives 88 g CO}_2 \text{ and 36 g of H}_2\text{O. The molecular formula of the compound may be:}$ 2 201 Recommended Questions $\text{C}_4\text{H}_6$, $\text{C}_2\text{H}_6\text{O}$... 3 Edit Delete
7382 $\text{The molar mass of naturally occurring Argon isotopes is:}$ $\begin{array}{|c|c|c|} \hline \text{Isotope} & \text{Isotopic molar mass} & \text{Abundance} \\ \hline \text{36-Ar} & 35.96755 \text{ g mol}^{-1} & 0.337\% \\ \hline \text{38-Ar} & 37.96272 \text{ g mol}^{-1} & 0.063\% \\ \hline \text{40-Ar} & 39.9624 \text{ g mol}^{-1} & 99.600\% \\ \hline \end{array}$ 2 201 Recommended Questions $49.99947 \text{ g mol}^{-1}$, $39.99947 \text{ g mol}^{-1}$... 2 Edit Delete
7381 $\text{The empirical formula and molecular mass of a compound are CH}_2\text{O and 180 g, respectively. The molecular formula of the compound is:}$ 2 201 Recommended Questions $\text{C}_9\text{H}_{18}\text{O}_9$, $\text{CH}_2\text{O}$... 3 Edit Delete
7380 $\text{The mole fraction of the solute in a 1.00 molal aqueous solution is:}$ 2 201 Recommended Questions $0.00177$, $0.0344$... 3 Edit Delete
7379 $\text{The number of gram molecules of oxygen in } 6.02 \times 10^{24} \text{ CO molecules are:}$ 2 201 Recommended Questions $10 \text{ g molecules}$, $5 \text{ g molecules}$... 2 Edit Delete
7378 $\text{Given below are two statements:}$ $\text{Assertion (A):}$ $\text{One atomic mass unit is defined as one-twelfth of the mass of one carbon-12 atom.}$ $\text{Reason (R):}$ $\text{The carbon-12 isotope is the most abundant isotope of carbon and has been chosen as the standard.}$ 2 201 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
7377 $\text{Calculate the number of moles of oxygen (O) atoms in 126 amu of HNO}_3\text{.}$ 2 201 Recommended Questions $2$, $\frac{2}{\text{N}_A}$... 4 Edit Delete
7376 $\text{Assertion (A):}$ $\text{1 a.m.u} = 1.66 \times 10^{-24} \text{ gram.}$ $\text{Reason (R):}$ $\text{The actual mass of one atom of C-12 is equal to } 1.99 \times 10^{-23} \text{ g.}$ 2 201 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 1 Edit Delete
7375 $\text{Assertion (A):}$ $\text{1 g O}_2 \text{ and 1 g O}_3 \text{ have an equal number of oxygen atoms.}$ $\text{Reason (R):}$ $\text{O}_2 \text{ and O}_3 \text{ have different molar masses.}$ 2 201 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 2 Edit Delete
7374 $\text{Which of the following statements is correct?}$ 2 201 Recommended Questions $\text{1 mole of electrons weights 5.4 mg .}$, $\text{1 mole of electrons weights 5.4 kg.}$... 3 Edit Delete
7373 $\text{The average molar mass of the mixture of CH}_4 \text{ and C}_2\text{H}_4 \text{ present in the mole ratio of a:b is 20 g mol}^{-1}\text{. When the mole ratio is reversed, the molar mass of the mixture will be:}$ 2 201 Recommended Questions $24 \text{ gram}$, $42 \text{ gram}$... 1 Edit Delete
7372 $\text{What is the ratio of the number of atoms in 2.2 g of CO}_2 \text{ and in 1.7 g of NH}_3\text{?}$ 2 201 Recommended Questions $\frac{1}{2}$, $\frac{1}{8}$... 3 Edit Delete
7371 $\text{The maximum number of water molecules among the following is:}$ 2 201 Recommended Questions $18 \text{ mL of water}$, $0.18 \text{ g of water}$... 1 Edit Delete
7370 $100 \text{ mL of H}_2\text{SO}_4 \text{ solution having molarity of 1M and density 1.5 g/mL is mixed with 400 mL of water. The molarity of the H}_2\text{SO}_4 \text{ solution will be: (final density is 1.25 g/mL)}$ 2 201 Recommended Questions $4.4 \text{ M}$, $0.145 \text{ M}$... 4 Edit Delete
7369 $\text{Assertion (A):}$ $\text{The combustion of 16 g of methane gives 18 g of water.}$ $\text{Reason (R):}$ $\text{In the combustion of methane, water is one of the products.}$ 2 201 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 4 Edit Delete
7368 $\text{An element X has the following isotopic composition,}$\n\n$^{200}\text{X : 90\%, }^{199}\text{X : 8.0\%, }^{202}\text{X : 2.0\%}$\n\n$\text{The weighted average atomic mass of the naturally occurring element X is closest to:}$ 2 201 Recommended Questions $205 \text{ u}$, $220 \text{ u}$... 4 Edit Delete
7367 $\text{The number of valence electrons present in 0.53 grams of Na}_2\text{CO}_3 \text{ is:}$ 2 201 Recommended Questions $3.01 \times 10^{23}$, $7.22 \times 10^{22}$... 2 Edit Delete
7366 $\text{Calculate the number of ions present in 2L of a solution of 1.6 M K}_4\text{[Fe(CN)}_6\text{]:}$ 2 201 Recommended Questions $4.8 \times 10^{22}$, $4.8 \times 10^{23}$... 3 Edit Delete
7365 $\text{If N}_A \text{ is Avogadro's number, then the number of valence electrons in 4.2 g of nitride ions (N}^{3-}\text{) will be:}$ 2 201 Recommended Questions $3.2 \text{ N}_A$, $1.6 \text{ N}_A$... 3 Edit Delete
7364 $\text{At 100}^{\circ}\text{C and 1 atm, if the density of liquid water is 1.0 g cm}^{-3} \text{ and that of water vapor is 0.0006 g cm}^{-3}\text{, then the volume occupied by water molecules in 1 litre of steam at that temperature will be:}$ 2 201 Recommended Questions $6 \text{ cm}^3$, $60 \text{ cm}^3$... 3 Edit Delete
7363 $\text{An organic substance containing C, H, and O gave the following percentage composition:}$\n\n$\text{C = 40.687\%, H = 5.085\% and O = 54.228\%. The vapour density of this organic substance is 59.}$\n\n$\text{The molecular formula of the compound will be:}$ 2 201 Recommended Questions $\text{C}_4\text{H}_6\text{O}_4$, $\text{C}_4\text{H}_6\text{O}_2$... 1 Edit Delete
7362 \text{The number of atoms in 0.1 mole of a triatomic gas is:} \text{(N}_A = 6.02 \times 10^{23} \text{ mol}^{-1}\text{)} 2 201 Recommended Questions $6.026 \times 10^{22}$, $1.806 \times 10^{23}$... 2 Edit Delete
7361 $\text{If the Avogadro number N}_A\text{, is changed from } 6.022 \times 10^{23} \text{ mol}^{-1} \text{ to } 6.022 \times 10^{20} \text{ mol}^{-1} \text{ this would change:}$ 2 201 Recommended Questions $\text{The definition of mass in units of grams.}$, $\text{The mass of one mole of carbon.}$... 2 Edit Delete
7360 $\text{The maximum number of molecules is present in which of the following?}$ 2 201 Recommended Questions $\text{15 L of H}_2 \text{ gas at STP}$, $\text{5 L of N}_2 \text{ gas at STP}$... 1 Edit Delete
7359 $\text{1cc N}_2\text{O at STP contains:}$ 2 201 Recommended Questions $\frac{1.32}{224} \times 10^{23} \text{ electrons}$, $\frac{6.02}{22400} \times 10^{23} \text{ molecules}$... 4 Edit Delete
7358 $6.02\times10^{20} \text{ molecules of urea are present in 100mL of its solution. The concentration of the solution is:}$ 2 201 Recommended Questions $0.02\text{M}$, $0.01\text{M}$... 2 Edit Delete
7357 $\text{A mixture of gases contains H}_2 \text{ and O}_2 \text{ gases in the ratio of 1 : 4 (w/w). The molar ratio of the two gases in the mixture will be:}$ 2 201 Recommended Questions $1:4$, $4:1$... 2 Edit Delete
7356 $\text{The haemoglobin from the red blood corpuscles contains approximately 0.33\% iron by mass. The molar mass of haemoglobin is 67,200. The number of iron atoms in each molecule of haemoglobin is:}$\n\n$(\text{atomic mass of iron}=56):$ 2 201 Recommended Questions $2$, $3$... 3 Edit Delete
7355 $\text{The amount of copper (in grams) that can be obtained from 100 g of copper sulphate (CuSO}_4\text{) is:}$ 2 201 Recommended Questions $54.00$, $39.81$... 2 Edit Delete
7354 $\text{The formula of an acid is HXO}_2\text{. The mass of 0.0242 moles of the acid is 1.657 g.}$\n\n$\text{The atomic weight of X is:}$ 2 201 Recommended Questions $35.5$, $28.1$... 1 Edit Delete
7353 $\text{Mark the species among the following that contains the highest number of atoms:}$ 2 201 Recommended Questions $\text{4 g He}$, $\text{46 g Na}$... 4 Edit Delete
7352 $\text{The number of moles present in 2.5 litres of 0.2 M H}_2\text{SO}_4 \text{ are:}$ 2 201 Recommended Questions $0.25$, $0.5$... 2 Edit Delete
7351 $4.4 \text{ g of an unknown gas occupies } 2.24 \text{ litres of volume at NTP. The gas may be:}$ 2 201 Recommended Questions $\text{Carbon dioxide}$, $\text{Carbon monoxide}$... 1 Edit Delete
7350 $\text{Match the following:}$ $\text{COLUMN I}$ $\text{A. 88 g of } \text{CO}_2$ $\text{B. } 6.022 \times 10^{23} \text{ molecules of } \text{H}_2\text{O}$ $\text{C. 5.6 L of } \text{O}_2 \text{ at STP}$ $\text{D. 96 g of } \text{O}_2$ $\text{COLUMN II}$ $\text{1. 0.25 mol}$ $\text{2. 2 mol}$ $\text{3. 3 mol}$ $\text{4. 1 mol}$ 2 201 Recommended Questions $\text{A-2, B-4, C-1, D-3}$, $\text{A-1, B-2, C-3, D-4}$... 1 Edit Delete
7349 $\text{A significant figure is defined as:}$ 2 201 Recommended Questions $\text{The total number of digits in a number, including the last digit that represents the uncertainty of the result.}$, $\text{The total number of digits in a number, excluding the last digit, which represents the uncertainty of the result.}$... 1 Edit Delete
7348 $\text{Which of the following combinations illustrates the law of reciprocal proportions?}$ 2 201 Recommended Questions $\text{N}_2\text{O}_3, \text{N}_2\text{O}_4, \text{N}_2\text{O}_5$, $\text{NaCl}, \text{NaBr}, \text{NaI}$... 3 Edit Delete
7347 $\text{The number of significant figures in the numbers 5005, 500.0, and 126,000 are, respectively:}$ 2 201 Recommended Questions $\text{2, 4, and 3}$, $\text{4, 1, and 3}$... 4 Edit Delete
7346 $\text{Regarding significant figures:}$\n\n$\text{Assertion (A): The significant figure for 0.200 is 3, whereas the significant figure for 200 is 1.}$\n\n$\text{Reason (R): Zero at the end or right of a number is significant, provided it is not on the right side of the decimal point.}$ 2 201 Recommended Questions $\text{Both (A) and (R) are True and (R) is the correct explanation of (A).}$, $\text{Both (A) and (R) are True but (R) is not the correct explanation of (A).}$... 3 Edit Delete
7345 \text{In the final answer of the expression } \frac{(29.2-20.2) \times (1.79 \times 10^5)}{1.37} \text{ the number of significant figures after solving the expression is:} 2 201 Recommended Questions $2$, $4$... 1 Edit Delete
7344 $\text{The incorrect statement among the following is:}$ 2 201 Recommended Questions $\text{A molecule of a compound has atoms of different elements.}$, $\text{A compound cannot be separated into its constituent elements by the physical method of separation.}$... 3 Edit Delete
7343 $\text{The number of significant figures present in the answer of the following calculations [(i), (ii), (iii)] are respectively -}$ $\text{1. } 0.02856 \times 298.15 \times 0.112 / 5785$ $\text{2. } 5 \times 5.364$ $\text{3. } 0.0125 + 0.7864 + 0.0215$ 2 201 Recommended Questions $4, 4, 3$, $3, 3, 4$... 4 Edit Delete
7342 $\text{Round up the following number into three significant figures: i. } 10.4107 \text{ ii. } 0.04597 \text{ respectively are}$ 2 201 Recommended Questions $10.4, 0.0460$, $10.41, 0.046$... 1 Edit Delete
7341 $\text{A reading on Fahrenheit scale is } 200^\circ\text{F}\text{. The same reading on celsius scale will be:}$ 2 201 Recommended Questions $40^\circ\text{C}$, $94^\circ\text{C}$... 3 Edit Delete
7340 \text{Two students performed the same experiment separately, and each of them recorded two readings of mass, which are given below. The correct reading of mass is } 3.0 \text{ g.} \text{Student A: Reading 1 = } 3.01, \text{ Reading 2 = } 2.99 \text{Student B: Reading 1 = } 3.05, \text{ Reading 2 = } 2.95 \text{On the basis of the given data, mark the correct option out of the following statements.} 2 201 Recommended Questions $\text{The results of both the students' are neither accurate nor precise.}$, $\text{The results of student A are both precise and accurate.}$... 2 Edit Delete
7339 $\text{If the mass of air at sea level is } 1034 \text{ g cm}^{-2}\text{, pressure in pascal will be:}$ 2 201 Recommended Questions $1.01332 \times 10^5 \text{ Pa}$, $1.01332 \times 10^6 \text{ Pa}$... 1 Edit Delete
7338 $15.15 \text{ pm in the basic unit will be}$ 2 201 Recommended Questions $1.515 \times 10^{-12} \text{ m}$, $2.57 \times 10^{-11} \text{ m}$... 4 Edit Delete
7337 $\text{In sodium sulphate (}\text{Na}_2\text{SO}_4\text{), the mass percent of sodium, sulfur and oxygen is:}$ 2 201 Recommended Questions $32.4\%, 45.05\%, 22.6\%$, $22.6\%, 45.05\%, 32.4\%$... 3 Edit Delete
7336 $\text{Which of the following statement indicates that the law of multiple proportions is being followed?}$ 2 201 Recommended Questions $\text{A sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio of } 1:2\text{.}$, $\text{Carbon forms two oxides namely, } \text{CO}_2 \text{ and } \text{CO} \text{ where masses of oxygen that combine with a fixed mass of carbon are in the simple ratio of } 2:1\text{.}$... 2 Edit Delete
7335 $\text{The following data was obtained when dinitrogen and dioxygen react together to form different compounds:}$ $\begin{array}{|c|c|c|} \hline & \text{Mass of dinitrogen} & \text{Mass of dioxygen} \\ \hline \text{i.} & 14 \text{ g} & 16 \text{ g} \\ \hline \text{ii.} & 14 \text{ g} & 32 \text{ g} \\ \hline \text{iii.} & 28 \text{ g} & 32 \text{ g} \\ \hline \text{iv.} & 28 \text{ g} & 80 \text{ g} \\ \hline \end{array}$ $\text{The law of chemical combination applicable to the above experimental data is:}$ 2 201 Recommended Questions $\text{Law of reciprocal proportions}$, $\text{Law of multiple proportions}$... 2 Edit Delete
7334 $\text{If the density of the solution is } 3.12 \text{ g ml}^{-1}\text{, then what will be the mass of the } 1.5 \text{ ml solution in two significant figures?}$ 2 201 Recommended Questions $4.4 \text{ g}$, $4680 \times 10^3 \text{ g}$... 3 Edit Delete
7333 $\text{The numbers 234,000 and 6.0012 can be represented in scientific notation as:}$ 2 201 Recommended Questions $2.34 \times 10^{-9} \text{ and } 6 \times 10^{3}$, $0.234 \times 10^{-6} \text{ and } 60012 \times 10^{-9}$... 4 Edit Delete
7332 $\text{Identify the reaction that does not obey the law of conservation of mass from the provided options:}$ 2 201 Recommended Questions $2\text{Mg}_{(s)} + \text{O}_2\text{(g)} \rightarrow 2\text{MgO}_{(s)}$, $\text{C}_3\text{H}_8\text{(g)} + \text{O}_2\text{(g)} \rightarrow \text{CO}_2\text{(g)} + \text{H}_2\text{O}_{(g)}$... 2 Edit Delete
7331 $\text{The correct match is:}$ $\begin{array}{|c|c|c|c|} \hline \text{List I} & & \text{List II} & \\ \hline \text{a.} & \text{Micro} & \text{i.} & 10^{-15} \text{ m} \\ \hline \text{b.} & \text{Mega} & \text{ii.} & 10^{-6} \text{ m} \\ \hline \text{c.} & \text{Giga} & \text{iii.} & 10^{6} \text{ m} \\ \hline \text{d.} & \text{Femto} & \text{iv.} & 10^{9} \text{ m} \\ \hline \end{array}$ $\text{Codes:}$ $\begin{array}{|c|c|c|c|c|} \hline & \text{a} & \text{b} & \text{c} & \text{d} \\ \hline \text{1.} & \text{i} & \text{iv} & \text{iii} & \text{ii} \\ \hline \text{2.} & \text{iii} & \text{iv} & \text{ii} & \text{i} \\ \hline \text{3.} & \text{ii} & \text{iii} & \text{iv} & \text{i} \\ \hline \text{4.} & \text{i} & \text{iii} & \text{iv} & \text{ii} \\ \hline \end{array}$ 2 201 Recommended Questions $\text{a-i, b-iv, c-iii, d-ii}$, $\text{a-iii, b-iv, c-ii, d-i}$... 3 Edit Delete
7330 $\text{If the speed of light is } 3.0 \times 10^8 \text{ m s}^{-1}\text{, then the distance covered by light in 2.00 nanoseconds will be -}$ 2 201 Recommended Questions $0.500 \text{ m}$, $0.600 \text{ m}$... 2 Edit Delete
7329 $\text{The SI unit of mass is:}$ 2 201 Recommended Questions $\text{Kilogram (kg)}$, $\text{Gram (g)}$... 1 Edit Delete
7328 126-4-96 1 126 N/A 1, 2... 3 Edit Delete
7327 126-4-95 1 126 N/A 1, 2... 1 Edit Delete
7326 126-4-94 1 126 N/A 1, 2... 1 Edit Delete
7325 126-4-93 1 126 N/A 1, 2... 1 Edit Delete
7324 126-4-92 1 126 N/A 1, 2... 1 Edit Delete
7323 126-4-91 1 126 N/A 1, 2... 4 Edit Delete
7322 126-4-90 1 126 N/A 1, 2... 2 Edit Delete
7321 126-4-89 1 126 N/A 1, 2... 2 Edit Delete
7320 126-4-88 1 126 N/A 1, 2... 1 Edit Delete
7319 126-4-87 1 126 N/A 1, 2... 1 Edit Delete
7318 126-4-86 1 126 N/A 1, 2... 3 Edit Delete
7317 126-4-85 1 126 N/A 1, 2... 1 Edit Delete
7316 126-4-84 1 126 N/A 1, 2... 1 Edit Delete
7315 126-4-83 1 126 N/A 1, 2... 2 Edit Delete
7314 126-4-82 1 126 N/A 1, 2... 1 Edit Delete
7313 126-4-81 1 126 N/A 1, 2... 3 Edit Delete
7312 126-4-80 1 126 N/A 1, 2... 4 Edit Delete
7311 126-4-79 1 126 N/A 1, 2... 4 Edit Delete
7310 126-4-78 1 126 N/A 1, 2... 3 Edit Delete
7309 126-4-77 1 126 N/A 1, 2... 1 Edit Delete
7308 126-4-76 1 126 N/A 1, 2... 3 Edit Delete
7307 126-4-75 1 126 N/A 1, 2... 3 Edit Delete
7306 126-4-74 1 126 N/A 1, 2... 1 Edit Delete
7305 126-4-73 1 126 N/A 1, 2... 1 Edit Delete
7304 126-4-72 1 126 N/A 1, 2... 3 Edit Delete
7303 126-4-71 1 126 N/A 1, 2... 3 Edit Delete
7302 126-4-70 1 126 N/A 1, 2... 2 Edit Delete
7301 126-4-69 1 126 N/A 1, 2... 3 Edit Delete
7300 126-4-68 1 126 N/A 1, 2... 3 Edit Delete
7299 126-4-67 1 126 N/A 1, 2... 4 Edit Delete
7298 126-4-66 1 126 N/A 1, 2... 3 Edit Delete
7297 126-4-65 1 126 N/A 1, 2... 3 Edit Delete
7296 126-4-64 1 126 N/A 1, 2... 2 Edit Delete
7295 126-4-63 1 126 N/A 1, 2... 1 Edit Delete
7294 126-4-62 1 126 N/A 1, 2... 1 Edit Delete
7293 126-4-61 1 126 N/A 1, 2... 2 Edit Delete
7292 126-4-60 1 126 N/A 1, 2... 2 Edit Delete
7291 126-4-59 1 126 N/A 1, 2... 3 Edit Delete
7290 126-4-58 1 126 N/A 1, 2... 4 Edit Delete
7289 126-4-57 1 126 N/A 1, 2... 2 Edit Delete
7288 126-4-56 1 126 N/A 1, 2... 1 Edit Delete
7287 126-4-55 1 126 N/A 1, 2... 3 Edit Delete
7286 126-4-54 1 126 N/A 1, 2... 3 Edit Delete
7285 126-4-53 1 126 N/A 1, 2... 3 Edit Delete
7284 126-4-52 1 126 N/A 1, 2... 1 Edit Delete
7283 126-4-51 1 126 N/A 1, 2... 2 Edit Delete
7282 126-4-50 1 126 N/A 1, 2... 1 Edit Delete
7281 126-4-49 1 126 N/A 1, 2... 2 Edit Delete
7280 126-4-48 1 126 N/A 1, 2... 3 Edit Delete
7279 126-4-47 1 126 N/A 1, 2... 2 Edit Delete
7278 126-4-46 1 126 N/A 1, 2... 1 Edit Delete
7277 126-4-45 1 126 N/A 1, 2... 1 Edit Delete
7276 126-4-44 1 126 N/A 1, 2... 3 Edit Delete
7275 126-4-43 1 126 N/A 1, 2... 3 Edit Delete
7274 126-4-42 1 126 N/A 1, 2... 2 Edit Delete
7273 126-4-41 1 126 N/A 1, 2... 1 Edit Delete
7272 126-4-40 1 126 N/A 1, 2... 4 Edit Delete
7271 126-4-39 1 126 N/A 1, 2... 2 Edit Delete
7270 126-4-38 1 126 N/A 1, 2... 1 Edit Delete
7269 126-4-37 1 126 N/A 1, 2... 4 Edit Delete
7268 126-4-36 1 126 N/A 1, 2... 4 Edit Delete
7267 126-4-35 1 126 N/A 1, 2... 2 Edit Delete
7266 126-4-34 1 126 N/A 1, 2... 2 Edit Delete
7265 126-4-33 1 126 N/A 1, 2... 2 Edit Delete
7264 126-4-32 1 126 N/A 1, 2... 1 Edit Delete
7263 126-4-31 1 126 N/A 1, 2... 2 Edit Delete
7262 126-4-30 1 126 N/A 1, 2... 4 Edit Delete
7261 126-4-29 1 126 N/A 1, 2... 3 Edit Delete
7260 126-4-28 1 126 N/A 1, 2... 3 Edit Delete
7259 126-4-27 1 126 N/A 1, 2... 2 Edit Delete
7258 126-4-26 1 126 N/A 1, 2... 2 Edit Delete
7257 126-4-25 1 126 N/A 1, 2... 2 Edit Delete
7256 126-4-24 1 126 N/A 1, 2... 3 Edit Delete
7255 126-4-23 1 126 N/A 1, 2... 1 Edit Delete
7254 126-4-22 1 126 N/A 1, 2... 3 Edit Delete
7253 126-4-21 1 126 N/A 1, 2... 4 Edit Delete
7252 126-4-20 1 126 N/A 1, 2... 3 Edit Delete
7251 126-4-19 1 126 N/A 1, 2... 3 Edit Delete
7250 126-4-18 1 126 N/A 1, 2... 3 Edit Delete
7249 126-4-17 1 126 N/A 1, 2... 4 Edit Delete
7248 126-4-16 1 126 N/A 1, 2... 2 Edit Delete
7247 126-4-15 1 126 N/A 1, 2... 2 Edit Delete
7246 126-4-14 1 126 N/A 1, 2... 2 Edit Delete
7245 126-4-13 1 126 N/A 1, 2... 3 Edit Delete
7244 126-4-12 1 126 N/A 1, 2... 3 Edit Delete
7243 126-4-11 1 126 N/A 1, 2... 3 Edit Delete
7242 126-4-10 1 126 N/A 1, 2... 3 Edit Delete
7241 126-4-9 1 126 N/A 1, 2... 4 Edit Delete
7240 126-4-8 1 126 N/A 1, 2... 1 Edit Delete
7239 126-4-7 1 126 N/A 1, 2... 4 Edit Delete
7238 126-4-6 1 126 N/A 1, 2... 3 Edit Delete
7237 126-4-5 1 126 N/A 1, 2... 2 Edit Delete
7236 126-4-4 1 126 N/A 1, 2... 4 Edit Delete
7235 126-4-3 1 126 N/A 1, 2... 3 Edit Delete
7234 126-4-2 1 126 N/A 1, 2... 3 Edit Delete
7233 126-4-1 1 126 N/A 1, 2... 2 Edit Delete
7232 125-4-97 1 125 N/A 1, 2... 4 Edit Delete
7231 125-4-96 1 125 N/A 1, 2... 1 Edit Delete
7230 125-4-95 1 125 N/A 1, 2... 3 Edit Delete
7229 125-4-94 1 125 N/A 1, 2... 5 Edit Delete
7228 125-4-93 1 125 N/A 1, 2... 4 Edit Delete
7227 125-4-92 1 125 N/A 1, 2... 2 Edit Delete
7226 125-4-91 1 125 N/A 1, 2... 1 Edit Delete
7225 125-4-90 1 125 N/A 1, 2... 4 Edit Delete
7224 125-4-89 1 125 N/A 1, 2... 3 Edit Delete
7223 125-4-88 1 125 N/A 1, 2... 5 Edit Delete
7222 125-4-87 1 125 N/A 1, 2... 3 Edit Delete
7221 125-4-86 1 125 N/A 1, 2... 1 Edit Delete
7220 125-4-85 1 125 N/A 1, 2... 4 Edit Delete
7219 125-4-84 1 125 N/A 1, 2... 4 Edit Delete
7218 125-4-83 1 125 N/A 1, 2... 4 Edit Delete
7217 125-4-82 1 125 N/A 1, 2... 1 Edit Delete
7216 125-4-81 1 125 N/A 1, 2... 4 Edit Delete
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78 N/A N/A Edit Delete
77 The length, breadth and thickness of a block are given by $l = 12\,cm,\,b = 6\,cm$ and $t = 2.45\,cm$ ,The volume of the block according to the idea of significant figures should be, 1 101 N/A $1 \times {10^2}\,c{m^3}$, $2 \times {10^2}\,c{m^3}$... 2 Edit Delete
76 While measuring the acceleration due to gravity by a simple pendulum, a student makes a positive error of 1% in the length of the pendulum and a negative error of 3% in the value of time period. His percentage error in the measurement of $g$by the relation $g = 4{\pi ^2}\left( {l/{T^2}} \right)$ will be 1 101 N/A 2%, 4%... 3 Edit Delete
75 The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in the measurement of force and length are respectively 4% and 2%, The maximum error in the measurement of pressure is 1 101 N/A 1%, 2%... 4 Edit Delete
74 If radius of the sphere is $(5.3 \pm 0.1)$cm. Then percentage error in its volume will be 1 101 N/A $3 + 6.01 \times \frac{{100}}{{5.3}}$, $\frac{1}{3} \times 0.01 \times \frac{{100}}{{5.3}}$... 3 Edit Delete
73 The dimensions of ${e^2}/4\pi {\varepsilon _0}hc$, where $e,\,{\varepsilon _0},\,h$ and c are electronic charge, electric permittivity, Planck’s constant and velocity of light in vacuum respectively 1 101 N/A $[{M^0}{L^0}{T^0}]$, $[{M^1}{L^0}{T^0}]$... 1 Edit Delete
72 Dimensions of $\frac{1}{{{\mu _0}{\varepsilon _0}}}$, where symbols have their usual meaning, are 1 101 N/A $[L{T^{ - 1}}]$, $[{L^{ - 1}}T]$... 4 Edit Delete
71 The dimensions of $\frac{a}{b}$ in the equation $P = \frac{{a - {t^2}}}{{bx}}$, where $P$ is pressure, $x$ is distance and $t$ is time, are 1 101 N/A $M{T^{ - 2}}$, ${M^2}L{T^{ - 3}}$... 1 Edit Delete
70 The equation of state of some gases can be expressed as $\left( {P + \frac{a}{{{V^2}}}} \right) = \frac{{R\theta }}{V}$ Where $P$ is the pressure, $V$ the volume, $\theta $ the absolute temperature and $a$ and $b$ are constants. The dimensional formula of $a$ is 1 101 N/A $[M{L^5}{T^{ - 2}}]$, $[{M^{ - 1}}{L^5}{T^{ - 2}}]$... 1 Edit Delete
69 The position of a particle at time $t$ is given by the relation $x(t) = \left( {\frac{{{v_0}}}{\alpha }} \right)\,\,(1 - {c^{ - \alpha t}})$, where ${v_0}$ is a constant and $\alpha > 0$. The dimensions of ${v_0}$ and $\alpha $ are respectively 1 101 N/A ${M^0}{L^1}{T^{ - 1}}$ and ${T^{ - 1}}$, ${M^0}{L^1}{T^0}$ and ${T^{ - 1}}$... 1 Edit Delete
68 From the dimensional consideration, which of the following equation is correct 1 101 N/A $T = 2\pi \sqrt {\frac{{{R^3}}}{{GM}}} $, $T = 2\pi \sqrt {\frac{{GM}}{{{R^3}}}} $... 1 Edit Delete
67 The velocity $v$ (in $cm/\sec $) of a particle is given in terms of time $t$ (in sec) by the relation $v = at + \frac{b}{{t + c}}$ ; the dimensions of $a,\,b$ and $c$ are 1 101 N/A $a = {L^2},\,b = T,\,c = L{T^2}$, $a = L{T^2},\,b = LT,\,c = L$... 3 Edit Delete
66 A dimensionally consistent relation for the volume $V$ of a liquid of coefficient of viscosity $\eta $ flowing per second through a tube of radius $r$ and length $l$ and having a pressure difference $p$ across its end, is 1 101 Recommended Questions $V = \frac{{\pi p{r^4}}}{{8\eta l}}$, $V = \frac{{\pi \eta l}}{{8p{r^4}}}$... 1 Edit Delete
65 From the equation $\tan \theta = \frac{{rg}}{{{v^2}}}$, one can obtain the angle of banking $\theta $ for a cyclist taking a curve (the symbols have their usual meanings). Then say, it is 1 101 Recommended Questions Both dimensionally and numerically correct, Neither numerically nor dimensionally correct... 3 Edit Delete
64 $E,\,m,\,l$ and $G$ denote energy, mass, angular momentum and gravitational constant respectively, then the dimension of $\frac{{E{l^2}}}{{{m^5}{G^2}}}$ are 1 101 N/A Angle, Length... 1 Edit Delete
63 The SI unit of surface tension is 1 101 N/A Dyne/cm, Newton/cm... 3 Edit Delete
62 What are the units of $K = 1/4\pi {\varepsilon _0}$ 1 101 Recommended Questions ${C^2}{N^{ - 1}}{m^{ - 2}}$, $N{m^2}{C^{ - 2}}$... 2 Edit Delete
61 The temperature of a body on Kelvin scale is found to be $X\;K$. When it is measured by a Fahrenheit thermometer, it is found to be ${X^0}F$. Then $X$ is 1 101 Recommended Questions 301.25, 574.25... 2 Edit Delete
60 The unit of permittivity of free space ${\varepsilon _0}$ is 1 101 N/A Coulomb/Newton-metre, Newton-$metr{e^2}/Coulom{b^{\rm{2}}}$... 4 Edit Delete
59 The SI unit of universal gas constant $(R)$ is 1 101 Recommended Questions $Watt\,{K^{ - 1}}mo{l^{ - 1}}$, $Newton\,{K^{ - 1}}mo{l^{ - 1}}$... 3 Edit Delete
58 The surface tension of a liquid is $70\,dyne/cm$. In MKS system its value is 1 101 N/A $70N/m$, $7 \times {10^{ - 2}}\,N/m$... 2 Edit Delete
57 question subjectId chapterId N/A option1, option2... answer Edit Delete
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53 There is a small bubble at one end and bigger bubble at other end of a rod. What will happen? 3 N/A Smaller will grow until they collapse, Bigger will grow until they collapse... 2 Edit Delete
51 N/A N/A option4 Edit Delete
50 The probability of throwing an ace in a single throw of an unbiased dice is 2 3 N/A $\frac{1}{6}$, 1... option1 Edit Delete
49 \(\tan \,{{75}^{0}}+\cot \,{{75}^{0}}\)is equal to 2 3 N/A 2$\sqrt{3}$, 2 + $\sqrt{3}$... option4 Edit Delete
48 If det A = 3 and A is of ordr 2 x 2 , then det 4 A is equal to 2 3 N/A 3, 12... option3 Edit Delete
47 The system of equations x + y + z = 6 x + 2y + 3z =14 x + 3y + 5z = 20 has 2 3 N/A A unique solution, Only finitely many solutions... option4 Edit Delete
46 The equation of the curve which passes through the point (1,1) and for which $\frac{dy}{dx}=2x+2$is 2 3 N/A \(y={{x}^{2}}+2x\), \(y={{x}^{2}}+2x-3\)... option1 Edit Delete
45 If A = $\left( \begin{matrix} 1 & 2 \\ 3 & 4 \\ \end{matrix} \right)$,then adj (adj A) is equal to 2 3 N/A $\left( \begin{matrix} 1 & -2 \\ -3 & 4 \\ \end{matrix} \right)$ , $\left( \begin{matrix} 1 & 2 \\ 3 & 4 \\ \end{matrix} \right)$ ... option2 Edit Delete
44 If sec $\theta $-tan $\theta $= -$\frac{2}{3}$, then $\theta $ lies in the 2 3 N/A First quadrant, Second quadrant... option2 Edit Delete
43 The distance of the point $\left( \alpha ,\beta \right)$from X-axis is 2 3 N/A $\alpha $, $\beta $... option4 Edit Delete
42 In three-dimensional space, the locus of the equation x2 + y2 = 0 is 2 3 N/A {(0,0.0)}, XY – plane... option3 Edit Delete
41 If $\frac{dy}{dx}={{e}^{-\,\,2y}}$and y = 0, when x = 5, then the value of x when y = 3 is 2 3 N/A e5, e6 + 1... option3 Edit Delete
40 The points on the curve y = x3 - 3x at which the normal are parallel to the line 2x + 18y = 9 are 2 3 N/A (2,2), (2, -2)... option4 Edit Delete
39 $\underset{x\to e}{\mathop{Lt}}\,\frac{\log x-1}{x-e}$is equal to 2 3 N/A 1, $\frac{1}{2}$... option3 Edit Delete
38 Let $\vec{a},\vec{b},\vec{c}$be three vectors such that $\vec{a}\bullet (\vec{b}+\vec{c})+\vec{b}\bullet (\vec{c}+\vec{a})+\vec{c}\bullet (\vec{a}+\vec{b})=0$and $\left| {\vec{a}} \right|=1,\,\left| {\vec{b}} \right|=4,\left| {\vec{c}} \right|=8,$then $\left| \vec{a}+\vec{b}+\vec{c} \right|$equals 2 3 N/A 13, 81... option3 Edit Delete
37 The general solution of the trigonometric equation sin x + cos x = 1 is given by 2 3 N/A x = 2n$\pi ,\,n\,\in \,I$, $x=n\pi +{{(-1)}^{n}}\,\frac{\pi }{4}-\frac{\pi }{4},n\,\in \,I$... option2 Edit Delete
36 There is a small bubble at one end and bigger bubble at other end of a rod. What will happen? 2 3 N/A \(\frac{{0.1\pi }}{{{\mu _0}}}\), \(\frac{{0.2\pi }}{{{\mu _0}}}\)... option4 Edit Delete
35 The equation of the line with gradient (slope) $-\frac{3}{2}$ and which is concurrent with the lines 4x +3y-7 = 0 and 8x + 5y -1 = 0 is 2 3 N/A 3x + 2y - 2 = 0, 3x + 2y - 63 = 0... option1 Edit Delete
34 If f(x) = log $\left( \frac{1+x}{1-x} \right)$and g(x) = $\frac{3x+{{x}^{3}}}{1+3{{x}^{2}}}$, then f(g(x)) equals 2 3 N/A –f(x), 3f(x)... option2 Edit Delete
33 2 4 N/A 1, 2... option3 Edit Delete
32 If Lt f(x) = a2 then $\underset{x\to 0}{\mathop{Lt}}\,f\left( \frac{x}{2} \right)$is equal to 2 3 N/A 2a2, $\frac{{{a}^{2}}}{2}$... option3 Edit Delete
31 "$\underset{x\to 0}{\mathop{Lt}}\ \left( \frac{\tan x-x}{{{x}^{2}}\tan x} \right)$is equal to" N/A 2, 3... Edit Delete
22 Palisade tissue in dicot leaf is N/A N/A Edit Delete
21 In dicot stem, starch sheath is 1 2 N/A Outer cortex, Middle cortex... option4 Edit Delete
20 Endodermal cells in dicot root is the 1 2 N/A First layer of stele made up of barrel shaped cells with intercellular space, Last layer of cortex made up of barrel shaped cells with intercellular space... option4 Edit Delete
19 Epidermis of root is known as 1 2 N/A Epiblema, Rhizodermis... option4 Edit Delete
18 Name the inflorescence and select the name of plant with this inflorescence 1 2 N/A Cymose - Allium sativum, Racemose - Atropa belladonna... option3 Edit Delete
17 In following plants how many of them have axile placentation Allium, Solanum, Potato, Tobacco, Brassica 1 2 N/A 2, 3... option3 Edit Delete
16 Obligately placed ovary is the character of 1 2 N/A Brassicaceae, Solanaceae... option2 Edit Delete
15 1 2 N/A Makoi, Allium Sativum... option3 Edit Delete
14 In pumpkin the tendril is the modification of 1 2 N/A Terminal bud, Apical bud... option3 Edit Delete
13 Like gymnosperms an alga, Fucus sp. represents diplontic life cycle. But it differ from gymnosperms and angiosperms 1 2 N/A In single to few celled gametophyte, In few to multicelled gametophyte... option1 Edit Delete
12 Microspores are found in …….. and produces ……. 1 2 N/A Pistil, egg, Pistil, male gametes... option3 Edit Delete
11 Trimerous flowers are the character of 1 2 N/A Solanum, Pisum... option4 Edit Delete
10 The gametes of Ulothrix and Spirogyra are 1 2 N/A Non flagellated similar and flagellated similar respectively, Flagellated similar and non flagellated similar respectively... option2 Edit Delete
9 Match 1 2 N/A A Q N B R P C S O D T M , A R N B Q M C T O D S P... option1 Edit Delete
8 Identify diagram a and b 1 2 N/A Volvox, Spirogyra, Nostoc, Spirogyra... option3 Edit Delete
7 Analogous variant of mad cow diseases of cattles in humans is 1 101 N/A Bovine spongiform encephalopathy (BSE), Creutzfeldt-Jakob Disease (CJD)... option2 Edit Delete
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5 \text{In an experiment the initial number of radioactive nuclei is 3000, It is found that } 1000 \pm 40 \text{ nuclei decayed in the first } 1.0 \text{ s. For } |x| \ll 1, \ln(1 + x) = x \text{ up to first power in } x. \text{ The error } \Delta\lambda, \text{ in the determination of the decay constant } \lambda, \text{ in } s^{-1}, \text{ is} 1 1 NEET Previous Year Questions 0.04, 0.03... 4 Edit Delete
4 Identify a, b, c, d 1 2 N/A Slime mould, Euglenoids, Dianoflagellates, Paramoecium, Dianoflagellates, Euglenoids, Slime mould, Paramoecium... option2 Edit Delete
2 \text{The relation between } [\varepsilon_0] \text{ and } [\mu_0] \text{ is} 1 1 NEET Previous Year Questions \; [\mu_0] = [\varepsilon_0] [L]^2 [T]^{-2}, \; [\mu_0] = [\varepsilon_0] [L]^{-2} [T]^2... 2 Edit Delete
1 Which of the following statements regarding mitochondrial DNA (mtDNA) is true? 1 101 Previous Year Questions 1, 2... 4 Edit Delete
1 Which of the following statements regarding mitochondrial DNA (mtDNA) is true? 1 101 Previous Year Questions mtDNA is always inherited from the father., mtDNA is double-stranded and circular.... 1 Edit Delete