Import Question JSON

Current Question (ID: 18478)

Question:

$\text{Roasting of sulphides gives the gas 'X' as a by-product. This is a colourless gas}$ $\text{with the choking smell of burnt sulphur and causes great damage to}$ $\text{respiratory organs as a result of acid rain. Its aqueous solution is acidic, acts}$ $\text{as an oxidising agent, and its acid has never been isolated. The gas 'X' is:}$

Options:

1. $\text{SO}_2$
2. $\text{CO}_2$
3. $\text{SO}_3$
4. $\text{H}_2\text{S}$

Solution:

$\text{Hint: Sulphide ore on roasting generated SO}_2 \text{ gas}$ $\text{SO}_2 \text{ gas is liberated during roasting of sulphides as a by-product. It is a}$ $\text{colourless gas with choking smell of burnt sulphur and}$ $\text{caused great damage to respiratory organs. On reaction with water it forms}$ $\text{acid which acts as a oxidising agent.}$ $\text{The reactions are as follows:}$ $\text{The roasting of sulphide ore is as follows:}$ $\text{ZnS} + \text{O}_2 \rightarrow \text{ZnO} + \text{SO}_2(X)$ $\text{SO}_2 + \text{H}_2\text{O} + \text{O}_2 \rightarrow \text{H}_2\text{SO}_4$

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
}