Import Question JSON

Current Question (ID: 18804)

Question:

$\text{Consider the following graph.}$ $\text{Based on the graph above, it can be concluded that the element with a melting point higher than 3000 K will be:}$

Options:

1. $Y$
2. $X$
3. $Z$
4. $\text{None of the above}$

Solution:

$\text{HINT: X has highest melting point.}$ $\text{Explanation:}$ $\text{STEP 1: Among the graph, X has melting point greater than 3000 K i.e. Tungsten.}$ $\text{Tungsten has the highest melting point and lowest vapor pressure of all metals, and at temperatures over 1650}^\circ\text{C has the highest tensile strength.}$ $\text{It has excellent corrosion resistance and is attacked only slightly by most mineral acids.}$ $\text{STEP 2: Current uses are as electrodes, heating elements and field emitters, and as filaments in light bulbs and cathode ray tubes.}$ $\text{Tungsten is commonly used in heavy metal alloys such as high speed steel, from which cutting tools are manufactured.}$ $\text{It is also used in the so-called 'superalloys' to form wear-resistant coatings.}$

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
}