Import Question JSON

Current Question (ID: 10612)

Question:

$\text{Phosphine can not be produced by the following reaction:}$

Options:

1. $\text{White P is heated with NaOH.}$
2. $\text{Red P is heated with NaOH.}$ (Correct)
3. $\text{Ca}_3\text{P}_2 \text{ is heated with water.}$
4. $\text{Phosphorus trioxide is boiled with water.}$

Solution:

$\text{Hint: The formula of phosphine is } \text{PH}_3$ $\text{The synthesis reaction of phosphine is as follows:}$ $\text{P}_4 + 3\text{NaOH} + 3\text{H}_2\text{O} \rightarrow \text{PH}_3 + 3\text{NaH}_2\text{PO}_2 \text{ (Sodium hypophosphite)}$ $\text{Red phosphorus does not react with alkali.}$ $\text{Ca}_3\text{P}_2 \text{ is known as calcium phosphide}$ $\text{Ca}_3\text{P}_2 + 6\text{H}_2\text{O} \rightarrow 3\text{Ca}(\text{OH})_2 + 2\text{PH}_3$ $6\text{P}_4\text{O}_6 + 24\text{H}_2\text{O} \rightarrow 8\text{P} + 15\text{H}_3\text{PO}_4 + \text{PH}_3$ $\text{Hence, the correct answer is option second}$

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
}