Import Question JSON

Current Question (ID: 18490)

Question:

$\text{What method is used to extract zinc from zinc blende?}$

Options:

1. $\text{Electrolytic reduction}$
2. $\text{Roasting followed by reduction with carbon}$
3. $\text{Roasting followed by reduction with another metal}$
4. $\text{Roasting followed by self-reduction}$

Solution:

$\text{HINT: Zinc blende is roasted and then treated with coke for the reduction.}$ $\text{Explanation:}$ $\text{Step 1:}$ $\text{The formula for Zinc blende is ZnS.}$ $\text{Step 2:}$ $\text{Zinc blende is roasted and then treated with coke for the reduction.}$ $\text{The reaction of ZnS is as follows:}$ $\text{To get Zn from ZnS}$ $\text{ZnS} + \text{O}_2 \xrightarrow{\text{Roasting}} \text{ZnO} + \text{SO}_2$ $\text{ZnO} + \text{C} \xrightarrow{1700 \text{ K}} \text{Zn} + \text{CO}$

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
}