Import Question JSON

Current Question (ID: 10594)

Question:

$\text{Incorrect statement about red phosphorus is:}$

Options:

1. $\text{It is hard and crystalline.}$
2. $\text{It is poisonous.}$ (Correct)
3. $\text{It is less reactive than white phosphorus.}$
4. $\text{It is insoluble in water.}$

Solution:

$\text{HINT: Red phosphorus is not poisonous.}$ $\text{Explanation: Phosphorus allotropic forms are white, red and black.}$ $\text{The properties of white and red phosphorus is as follows:}$ $\text{White phosphorus}$ $\text{It is a soft and waxy solid. It possesses a garlic smell.}$ $\text{It is poisonous.}$ $\text{It is insoluble in water but soluble in carbon disulphide.}$ $\text{It undergoes spontaneous combustion in air.}$ $\text{In both solid and vapour states, it exists as a } \text{P}_4 \text{ molecule.}$ $\text{Red Phosphorus}$ $\text{It is a hard and crystalline solid without any smell.}$ $\text{It is non-poisonous.}$ $\text{It is insoluble in both water and carbon disulphide.}$ $\text{It is relatively less reactive.}$ $\text{It exists as a chain of tetrahedral } \text{P}_4 \text{ units.}$

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
}