Question
In Haber process of production of ammonia Al _2 O _3 is used as
MHT CET
Chemistry
p Block Elements (Group 15, 16, 17 & 18)
2026
MHT CET 2026 (20 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Adsorbate
- B. Inhibitor
- C. Catalyst
- D. Promoter
Answer
D. Promoter
Step-by-step solution
In the Haber process for the synthesis of ammonia, finely divided iron is used as the catalyst. To enhance the activity of the iron catalyst, small amounts of aluminum oxide ( Al _2 O _3) and potassium oxide ( K _2 O ) are added. Substances that increase the efficiency or activity of a catalyst are known as promoters. Therefore, Al _2 O _3 acts as a promoter. Answer: Promoter
Related: Chemistry — p Block Elements (Group 15, 16, 17 & 18) · All PYQ Banks