Import Question JSON

Current Question (ID: 9155)

Question:

$\text{The fire extinguisher contains NaHCO}_3 \text{ and the compound (X). The compound (X) maybe -}$

Options:

1. $\text{CH}_3\text{COOH}$
2. $\text{NaOH}$
3. $\text{C}_6\text{H}_5\text{OH}$
4. $\text{None of the above.}$

Solution:

$\text{HINT: Acetic acid is used with NaHCO}_3 \text{ in fire extinguisher.}$ $\text{Explanation:}$ $\text{Fire extinguisher contains NaHCO}_3 \text{ and compound X can be an acid (like CH}_3\text{COOH) that can decompose NaHCO}_3 \text{ to give CO}_2\text{.}$ $\text{NaHCO}_3 + \text{H}^+ \rightarrow \text{Na}^+ + \text{H}_2\text{O} + \text{CO}_2$ $\text{NaHCO}_3 \text{ and acid (X) are kept in a sealed flask (but placed inside separately).}$ $\text{In case of emergency (when there is fire), seal is broken and X and NaHCO}_3 \text{ react instantly to give CO}_2 \text{ which can put off fire.}$

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
}