Import Question JSON

Current Question (ID: 18834)

Question:

$\text{When copper is heated with conc. } \text{HNO}_3 \text{ it produces:}$

Options:

1. $\text{Cu(NO}_3\text{)}_2 \text{ and NO}_2$
2. $\text{Cu(NO}_3\text{)}_2 \text{ and NO}$
3. $\text{Cu(NO}_3\text{)}_2 , \text{ NO, and NO}_2$
4. $\text{Cu(NO}_3\text{)}_2 \text{ and N}_2\text{O}$

Solution:

$\text{Nitric acid acts as an oxidizing agent while reacting with copper.}$ $\text{With conc. HNO}_3, \text{ reaction proceeds as:}$ $\text{Cu} + 4\text{HNO}_3(\text{conc.}) \rightarrow \text{Cu(NO}_3\text{)}_2 + 2\text{NO}_2 + 2\text{H}_2\text{O}$ $\text{When copper is heated with conc. HNO}_3 \text{ it produces Cu(NO}_3\text{)}_2 \text{ and NO}_2$

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
}