Import Question JSON

Current Question (ID: 17887)

Question:

$\text{The major contributor to water pollution among the following is-}$

Options:

1. $\text{Sound}$
2. $\text{SO}_2$
3. $\text{Salts of arsenic}$
4. $\text{Sewage}$

Solution:

$\text{HINT: The waste material from people’s bodies that is carried away from their homes in water in large underground pipes.}$ $\text{Explanation:}$ $\text{Step 1:}$ $\text{Human activities that generate domestic sewage and toxic waste cause water pollution by contaminating water with disease-causing microorganisms and poisonous substances.}$ $\text{The major contaminants of concern, in potable water supplies are:}$ $\text{a) Suspended solids;}$ $\text{b) Biodegradable organics (proteins, carbohydrates and fats);}$ $\text{c) Pathogens;}$ $\text{d) Nutrients (Nitrogen, phosphorus and carbon);}$ $\text{e) Priority pollutants (highly toxic chemicals);}$ $\text{f) Refractory organics (pesticides, phenols, surfactants);}$ $\text{g) Heavy metals;}$ $\text{h) Dissolved inorganics (nuisance chemicals).}$ $\text{Step 2:}$ $\text{Sewage is more important for water pollution.}$

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
}