Question

Which of the following is used as a promoter in Bosch’s process?

• A. \( \text{CO}_2 \)
• B. CO
• C. \( \text{Fe}_2\text{O}_3 \)
• D. \( \text{Cr}_2\text{O}_3 \)

Hint:

In catalytic processes, promoters are substances that enhance the efficiency of catalysts without themselves being part of the main reaction.

Answer 1

The Correct Option is D

Step 1: Understanding the Bosch process.
The Bosch process is used for the production of hydrogen. In this process, \( \text{Cr}_2\text{O}_3 \) (Chromium oxide) is used as a promoter to improve the efficiency of the catalyst.

Step 2: Analyzing the options.
(A) \( \text{CO}_2 \): This is not used as a promoter in Bosch's process.
(B) CO: Carbon monoxide is not used as a promoter in this process.
(C) \( \text{Fe}_2\text{O}_3 \): Iron oxide is not the promoter in Bosch’s process.
(D) \( \text{Cr}_2\text{O}_3 \): Correct — Chromium oxide is used as a promoter in the Bosch process.

Step 3: Conclusion.
The correct answer is (D) \( \text{Cr}_2\text{O}_3 \), as it is used as a promoter in Bosch’s process.