Import Question JSON

Current Question (ID: 9203)

Question:

$\text{A compound (A) is used in the preparation of washing soda to recover ammonia in Solvay's process. When } \text{CO}_2 \text{ is bubbled through an aqueous solution of (A), the solution turns milky. It is used in whitewashing due to its disinfectant nature. The chemical formula of A is :}$

Options:

1. $\text{Ca(HCO}_3\text{)}_2$
2. $\text{CaO}$
3. $\text{Ca(OH)}_2$
4. $\text{CaCO}_3$

Solution:

$\text{HINT: Slaked lime is used in whitewashing.}$ $\text{Explanation:}$ $\text{The Solvay process or ammonia-soda process is the major industrial process for the production of sodium carbonate (soda ash, } \text{Na}_2\text{CO}_3\text{).}$ $\text{In this, Calcium hydroxide is heated with ammonium chloride to form ammonia and calcium chloride (by-product).}$ $\text{Thus, compound A is } \text{Ca(OH)}_2 \text{ which in reaction with } \text{CO}_2 \text{ gives } \text{CaCO}_3\text{(milky appearance).}$ $\text{NH}_3 \uparrow \xleftarrow{\text{Solvay's process}} \text{NH}_4\text{Cl Ca(OH)}_2 \xrightarrow{\text{CO}_2} \text{CaCO}_3$ $\text{(A)}$

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
}