Question

Which of the following is used as a catalyst in the Haber process?

• A. Iron oxide
• B. Vanadium oxide
• C. Manganese dioxide
• D. Platinum

Hint:

In the Haber process, iron acts as the main catalyst, while other oxides act as promoters to increase surface area and efficiency.

Answer 1

The Correct Option is A

Step 1: Understand the Haber process.
The Haber process is used for the industrial synthesis of ammonia from nitrogen and hydrogen: \[ \text{N}_2 + 3\text{H}_2 \rightleftharpoons 2\text{NH}_3 \]
Step 2: Identify the catalyst.
The catalyst used in this process is finely divided iron, often promoted with potassium oxide (\(\mathrm{K}_2\mathrm{O}\)) and aluminum oxide (\(\mathrm{Al}_2\mathrm{O}_3\)) to increase efficiency.