Import Question JSON

Current Question (ID: 18466)

Question:

$\text{Milk can be preserved by adding a few drops of?}$

Options:

1. $\text{Formic acid solution}$
2. $\text{Formaldehyde solution}$
3. $\text{Acetic acid solution}$
4. $\text{Acetaldehyde solution}$

Solution:

$\text{Formalin acts as preservative for milk.}$ $\text{Formaldehyde solution (Formalin) is an emulsifier which is added in the milk as it acts as a preserving agent for the milk.}$ $\text{It kills most of the bacteria and fungi present in the solution. As it kills the microbes present in the solution, we can use it as preservative so that it will not allow the microorganisms to grow in the milk and as a result we can preserve for longer times.}$

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
}