Import Question JSON

Current Question (ID: 21297)

Question:

$\text{The product A in the following reaction is:}$ $\begin{array}{c} \text{CH}_2\text{CH}_3 \\ \text{CN} \end{array} \xrightarrow{\text{Br}_2 \, \text{UV light}} \text{A (Major product) monobrominated}$

Options:

1. $\begin{array}{c} \text{CH}_2\text{CH}_3 \\ \text{CN} \\ \text{Br} \end{array}$
2. $\begin{array}{c} \text{CH}_2\text{CH}_3 \\ \text{CN} \\ \text{Br} \end{array}$
3. $\begin{array}{c} \text{Br} \, \text{CH}_2\text{CH}_3 \\ \text{CN} \end{array}$
4. $\begin{array}{c} \text{CH}_2\text{CH}_3 \\ \text{CN} \\ \text{Br} \end{array}$

Solution:

$\text{When given reactant reacts with Br}_2 \text{ in the presence of UV light then free radical substitution reaction occur at benzylic position.}$ $\text{The free radical is secondary and it is stabilized by resonance.}$ $\text{So, the hydrogen atom from -CH}_2\text{CH}_3 \text{ group is substituted by Br atom.}$ $\text{The reaction is as follows:}$ $\begin{array}{c} \text{CH}_2\text{CH}_3 \\ \text{CN} \end{array} \xrightarrow{\text{Br}_2 \, \text{UV light}} \begin{array}{c} \text{Br} \, \text{CH}_2\text{CH}_3 \\ \text{CN} \end{array}$ $\text{So, option 3 is the correct answer.}$

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
}