Import Question JSON

Current Question (ID: 18402)

Question:

$\text{Given below are three processes:}$ $\text{a. Emulsification}$ $\text{b. Adsorption}$ $\text{c. Absorption}$ $\text{The process of froth flotation and chromatography is based on:}$

Options:

1. $\text{a \& b}$
2. $\text{b \& c}$
3. $\text{a \& c}$
4. $\text{None of the above}$

Solution:

$\text{HINT: These are applications of adsorption, absorption and emulsification.}$ $\text{Explanation:}$ $\text{Concentration of ores in metallurgy: Some oils (such as pine oil) are used in the froth flotation process for the concentration of sulphide ores of metals.}$ $\text{Oil forms emulsion with ore particles. Air is bubbled through emulsion to raise it to the surface and skim it off.}$ $\text{Chromatography are two types (a) Adsorption chromatography and (b) Partition chromatography.}$ $\text{Adsorption chromatography is based on the fact that different compounds are adsorbed on an adsorbent to different degrees.}$

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
}