Import Question JSON

Current Question (ID: 18436)

Question:

$\text{What does the name "aquadag" refer to?}$

Options:

1. $\text{Cu in water sol.}$
2. $\text{Pt in water sol.}$
3. $\text{Graphite in water sol.}$
4. $\text{None of the above.}$

Solution:

$\text{(3) HINT: A trade name for graphite in water sol.}$ $\text{Explanation:}$ $\text{"Aquadag" is a dispersion of the purest and finest colloidal graphite in water.}$ $\text{It is a concentrate and is generally diluted with distilled, soft or demineralised water before use.}$ $\text{"Aquadag" is used to provide continuous, adherent dry films of colloidal graphite on a variety of materials.}$ $\text{Such films are mainly used as lubricants, parting agents or as electrical conductors.}$

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
}