Import Question JSON

Current Question (ID: 20980)

Question:

$\text{Among the following compounds, how many contain two lone pairs on the central atom?}$ $\text{XeF}_4, \text{H}_2\text{O}, \text{SF}_4, \text{CF}_4$

Options:

1. $4$
2. $1$
3. $2$
4. $0$

Solution:

$\text{Hint: Lone pair depends on the hybridization of the central atom}$ $\text{The structure of given compound is as follows:}$ $\text{Compound}$ $\text{(i) XeF}_4$ $\text{(ii) H}_2\text{O}$ $\text{(iii) SF}_4$ $\text{(iv) CF}_4$ $\text{The hybridization of Xe in XeF}_4 \text{ is sp}^3\text{d}^2 \text{ shape is square planar. It has 2 lone pair.}$ $\text{The hybridization of O in H}_2\text{O is sp}^3, \text{ the shape is bent or V shape. It has 2 lone pair.}$ $\text{The hybridization of S in SF}_4 \text{ is sp}^3\text{d, the shape is a see-saw. It has 1 lone pair.}$ $\text{The hybridization of C in CF}_4 \text{ is sp}^3, \text{ the shape is tetrahedral. It has zero lone pair.}$

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
}