Import Question JSON

Current Question (ID: 8674)

Question:

$\text{Match the items in Column I with the relevant items in Column II.}$ $\text{Column I}$ $\text{A. Hydrogen peroxide is used as a}$ $\text{B. Used in Calgon method}$ $\text{C. Temporary hardness of hard water is removed by}$ $\text{Column II}$ $\text{1. Sodium hexametaphosphate}$ $\text{2. Clark's method}$ $\text{3. Reducing agent}$

Options:

1. $\text{A-3, B-2, C-1}$
2. $\text{A-1, B-2, C-3}$
3. $\text{A-3, B-1, C-2}$
4. $\text{A-2, B-1, C-3}$

Solution:

$\text{Hint: Temporary hardness of hard water is removed by Clark's method}$ $\text{A. Hydrogen peroxide is a perhydrol, propellant, and reducing agent.}$ $\text{B. Sodium hexametaphosphate is used in the Calgon method.}$ $\text{C. Temporary hardness of hard water is removed by Clark's method}$ $\text{The complex salt of metaphosphoric acid, sodium hexametaphosphate (NaPO}_3\text{)}_6\text{, is known as Calgon. It is represented as Na}_2[\text{Na}_4\text{(PO}_3\text{)}_6]\text{. Calcium and magnesium salts present in hard water react with Calgon to give complex salts.}$

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
}