Import Question JSON

Current Question (ID: 17872)

Question:

$\text{The best measure(s) to control water pollution is/are:}$

Options:

1. $\text{Compost should be preferred over chemical fertilizers.}$
2. $\text{The concentration of pollutants in the industrial plants should be checked regularly.}$
3. $\text{All industrial and chemical discharges should be made free from toxic metals before allowing them to enter a water body.}$
4. $\text{All of the above.}$

Solution:

$\text{Water pollution is the contamination of water bodies, usually as a result of human activities, in such a manner that negatively affects its legitimate uses.}$ $\text{Water pollution arises as a result of various human activities. This includes discharges from wastewater treatment plants, run-off from agricultural fields, storm-water drainage, etc.}$ $\text{Pollutants from these sources enter the water bodies, thereby contaminating the water and rendering it impure.}$ $\text{Industries and chemical factories discharge toxic, heavy metals such as Fe, Mn, Al, etc., along with organic wastes into the water.}$ $\text{Domestic sewage and animal excreta are also responsible for pathogenic contamination of water. These pollutants make water unfit for drinking.}$ $\text{Therefore, all industrial and chemical discharges should be made free from toxic metals before allowing them to enter a water body.}$ $\text{The concentration of these pollutants should be checked regularly.}$ $\text{Compost should be preferred over chemical fertilizers in gardens and agricultural fields to avoid harmful chemicals from entering groundwater.}$

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
}