MCQ practice · SSC Chemistry Board questions · Chapter 7: Chemical Reactions
Which is used as the catalyst in making ammonia by the Haber process?
Think it through first, then pick an option.
- a Iron powder
- b Oxygen
- c Nickel powder
- d Organic peroxide
Answer and explanation
Correct answer: a Iron powder
In the book, powdered Fe acts as the catalyst.
Why the other options are wrong
- b Oxygen: O₂ is the catalyst for polythene; Haber uses powdered Fe.
- c Nickel powder: The book does not mention nickel; the Haber catalyst is iron powder.
- d Organic peroxide: Organic peroxide is not used in the Haber process; the catalyst is iron powder.
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