Import Question JSON

Current Question (ID: 10642)

Question:

$\text{One gas bleaches the colour of flowers by reduction, while the other gas bleaches by oxidation. The two gases, respectively, are:}$

Options:

1. $\text{CO and Cl}_2$
2. $\text{H}_2\text{S and Br}_2$
3. $\text{NH}_3 \text{ and SO}_3$
4. $\text{SO}_2 \text{ and Cl}_2$ (Correct)

Solution:

$\text{Hint: SO}_2 \text{ is a bleaching agent}$ $\text{An aqueous solution of SO}_2 \text{ acts as a reducing agent. Thus, SO}_2 \text{ in the presence of moisture is used as a bleaching agent. This is due to the reducing nature of SO}_2\text{. For delicate articles:}$ $\text{Coloured matter} + \text{H} \rightarrow \text{Colourless matter}$ $\text{Similarly, Cl}_2 \text{ acts as a bleaching agent in presence of moisture:}$ $\text{Cl}_2 + \text{H}_2\text{O} \rightarrow 2\text{HCl} + [\text{O}]$ $\text{Coloured matter} + [\text{O}] \rightarrow \text{Colourless matter}$ $\text{Hence, SO}_2 \text{ has reductive nature, while Cl}_2 \text{ has oxidative nature.}$

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
}