Import Question JSON

Current Question (ID: 8066)

Question:

The incorrect statement about $\text{NH}_3$ and $\text{H}_2\text{O}$ is:

Options:

1. The bond angle in $\text{NH}_3$ is less than in $\text{H}_2\text{O}$. (Correct)
2. Both have distorted tetrahedral geometries.
3. The bond angle in $\text{H}_2\text{O}$ is less than in $\text{NH}_3$.
4. Both are $\text{sp}^3$ hybridized.

Solution:

$\text{HINT: As the number of lone pairs is increased on the central atom, bond angle decreases.}\n\n\text{Explanation:}\n\text{The molecular geometry of NH}_3\text{ and H}_2\text{O can be shown as:}\n\n\text{The central atom (N) in NH}_3\text{ has one lone pair and there are three bond pairs. In H}_2\text{O, there are two lone pairs and two bond pairs.}\n\n\text{Central atoms in both the molecules are sp}^3\text{ hybridised with distorted tetrahedral geometries.}\n\n\text{The two lone pairs present in the oxygen atom of H}_2\text{O molecule repels the two bond pairs. This repulsion is stronger than the repulsion between the lone pair and the three bond pairs on the nitrogen atom.}\n\n\text{Thus, the bond angle in water is less than that of ammonia.}

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
}