Import Question JSON

Current Question (ID: 8641)

Question:

$\text{The catalyst used to increase the production of }\text{H}_2\text{, by 'coal gasification'}$ $\text{process is -}$

Options:

1. $\text{Copper}$
2. $\text{FeCr}_2\text{O}_4\text{ (iron chromate)}$
3. $\text{Pd/C}$
4. $\text{None of the above.}$

Solution:

$\text{HINT: Iron chromate is used as a catalyst in water-gas shift reactions.}$ $\text{Explanation:}$ $\text{Step 1:}$ $\text{Dihydrogen is produced by coal gasification method as:}$ $\text{C}_{\text{(g)}} + \text{H}_2\text{O}_{\text{(g)}} \xrightarrow{1270\text{ K}} \text{CO}_{\text{(g)}} + \text{H}_{2\text{(g)}}$ $\text{(coal)}$ $\text{Step 2:}$ $\text{The yield of dihydrogen (obtained from coal gasification) can be increased}$ $\text{by reacting carbon monoxide (formed during the reaction) with steam in the}$ $\text{presence of iron chromate as a catalyst.}$ $\text{CO}_{\text{(g)}} + \text{H}_2\text{O}_{\text{(g)}} \xrightarrow{\substack{673 \\ \text{Catalyst}}} \text{CO}_{2\text{(g)}} + \text{H}_{2\text{(g)}}$ $\text{This reaction is called the water-gas shift reaction. Carbon dioxide is}$ $\text{removed by scrubbing it with a solution of sodium arsenite.}$

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
}