Import Question JSON

Current Question (ID: 18515)

Question:

$\text{Match the items in Column I with the items in Column II, and assign the correct code.}$ $\text{Column I}$ \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}$ $\quad \text{5. Purification of Ni}$ $\text{Codes}$

Options:

1. $1. \ 4 \ 2 \ 3 \ 1$
2. $2. \ 2 \ 3 \ 1 \ 5$
3. $3. \ 1 \ 2 \ 3 \ 4$
4. $4. \ 3 \ 4 \ 5 \ 1$

Solution:

$\text{Hint: Froth floatation process is used for dressing of ZnS.}$ $\text{A. Cyanide process is used for extraction of Au through the formation of anionic complex } [\text{Au}] [\text{CN}]_2^- $ $\text{B. Froth floatation process is used for dressing of ZnS.}$ $\text{C. Electrolytic reduction method is used for extraction of aluminium. Graphite electrode is used for this purpose.}$ $\text{D. Zone-refining is used for purification of Ge.}$

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
}