Import Question JSON

Current Question (ID: 17873)

Question:

$\text{The major pollutant(s) of water pollution is/are:}$

Options:

1. $\text{Pathogens.}$
2. $\text{Organic waste.}$
3. $\text{Chemical components.}$
4. $\text{All of the above.}$

Solution:

$\text{Water pollution is caused by pathogens, organic and chemical wastes.}$ $\text{Roles played by major pollutants are:}$ $1. \text{Pathogens: These water pollutants include bacteria and other organisms.}$ $\text{They enter the water from animal excreta and domestic sewage.}$ $\text{Bacteria present in human excreta (for example, Escherichia coli and}$ $\text{Streptococcus faecalis) cause gastrointestinal diseases.}$ $2. \text{Organic wastes: These are biodegradable wastes that pollute water as a}$ $\text{result of runoff. The presence of excess organic wastes in water decreases}$ $\text{the amount of oxygen held by water.}$ $\text{This decrease in the amount of dissolved oxygen inhibits aquatic life.}$ $3. \text{Chemical pollutants: These are water-soluble chemicals like heavy metals}$ $\text{such as cadmium, mercury, nickel, etc.}$ $\text{The presence of these chemicals (above the tolerance limit) can damage the}$ $\text{kidneys, central nervous system, and liver.}$

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
}