Import Question JSON

Current Question (ID: 18508)

Question:

$\text{The correct statement among the following regarding the reaction of FeO below point A in the above diagram is:}$

Options:

1. $\text{Reduced by carbon monoxide only.}$
2. $\text{Reduced by both carbon monoxide and carbon.}$
3. $\text{Reduced by carbon only.}$
4. $\text{Not reduced by both carbon and carbon monoxide.}$

Solution:

$\text{Below point 'A' FeO can be reduced by carbon monoxide only.}$ $\text{Any metal will reduce oxide of other metals which lie above it in the Ellingham diagram because free energy change will become more negative.}$ $\text{Below point A Gibbs free energy change for the formation of CO}_2 \text{ from CO } (\Delta G^\circ_{\text{CO,CO}_2}) \text{ has lower value (more negative value) than Gibbs free energy change for the formation of FeO } (\Delta G^\circ_{\text{Fe,FeO}}).$ $\text{Hence, FeO will be reduced by CO only below point A.}$

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
}