Import Question JSON

Current Question (ID: 10706)

Question:

$\text{Which of the following statements is false?}$

Options:

1. $\text{Xe is the most reactive among the rare gases.}$
2. $\text{He is an inert gas.}$
3. $\text{Radon is obtained from the decay of radium.}$
4. $\text{The most abundant rare gas found in the atmosphere is He.}$ (Correct)

Solution:

$\text{HINT: He is not most abundant rare gas.}$ $\text{Explanation:}$ $\text{STEP 1: The most abundant rare gas found in the atmosphere is argon.}$ $\text{Argon is the third most common gas in the Earth's atmosphere, at 0.93\% (9,300 ppm), making it approximately 23.8 times as abundant as the next most common atmospheric gas, carbon dioxide (390 ppm), and more than 500 times as abundant as the next most common noble gas.}$ $\text{STEP 2: Radium-228 and Ra-224 are part of the thorium decay series. All isotopes of radium are radioactive. Radium decays to produce radon gas.}$ $\text{STEP 3: Noble gases are generally unreactive, but Xe compounds are reactive. It is so because the electrons in Xe are much less strongly bound to the atom, owning to it's large size. But, He is an inert gas.}$

Import JSON File

Upload a JSON file containing LaTeX/MathJax formatted question, options, and solution.

Expected JSON Format:

{
  "question": "The mass of carbon present in 0.5 mole of $\\mathrm{K}_4[\\mathrm{Fe(CN)}_6]$ is:",
  "options": [
    {
      "id": 1,
      "text": "1.8 g"
    },
    {
      "id": 2,
      "text": "18 g"
    },
    {
      "id": 3,
      "text": "3.6 g"
    },
    {
      "id": 4,
      "text": "36 g"
    }
  ],
  "solution": "\\begin{align}\n&\\text{Hint: Mole concept}\\\\\n&1 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\text{ moles of carbon atom}\\\\\n&0.5 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\times 0.5 \\text{ mol} = 3 \\text{ mol}\\\\\n&1 \\text{ mol of carbon} = 12 \\text{ g}\\\\\n&3 \\text{ mol carbon} = 12 \\times 3 = 36 \\text{ g}\\\\\n&\\text{Hence, 36 g mass of carbon present in 0.5 mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6].\n\\end{align}",
  "correct_answer": 4
}