Import Question JSON

Current Question (ID: 9103)

Question:

$\text{Potassium is kept-}$

Options:

1. $\text{Under cold water.}$
2. $\text{In ammonia.}$
3. $\text{In alcohol.}$
4. $\text{In kerosene.}$

Solution:

$\text{HINT: Potassium is generally stored in kerosene.}$ $\text{Explanation:}$ $\text{Alkali metals are highly reactive towards air and moisture and thus kept in kerosene.}$ $\text{They are kept in kerosene oil to prevent it from coming in contact with oxygen and moisture as they react to form their hydroxides.}$ $\text{This is an exothermic reaction and a lot of heat is generated so both the metals are kept in kerosene oil.}$ $2\text{K}_{(s)} + 2\text{H}_2\text{O}_{(l)} \rightarrow 2\text{KOH}_{(aq)} + \text{H}_2\text{(g)}$

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
}