Import Question JSON

Current Question (ID: 10841)

Question:

$\text{The compound with an isopropyl group is-}$

Options:

1. $\text{2,2,3,3-Tetramethylpentane}$
2. $\text{2,2-Dimethylpentane}$
3. $\text{2,2,3-Trimethylpentane}$
4. $\text{2-Methylpentane}$ (Correct)

Solution:

$\text{Hint: The structure of isopropyl group is } -\text{CH}(\text{CH}_3)_2$ $\text{The structure of the given compounds are as follows:}$ $\text{2,2,3,3-Tetramethylpentane: A pentane chain with two methyl groups at carbon 2 and two methyl groups at carbon 3}$ $\text{2,2-Dimethylpentane: A pentane chain with two methyl groups at carbon 2}$ $\text{2,2,3-Trimethylpentane: A pentane chain with two methyl groups at carbon 2 and one methyl group at carbon 3}$ $\text{Only 2-methylpentane contains an isopropyl group.}$ $\text{In 2-methylpentane, the methyl branch at position 2 creates an isopropyl structure } -\text{CH}(\text{CH}_3)_2 \text{ when considering the branching pattern.}$ $\text{Hence, option fourth is the answer.}$

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
}