The catalyst used in the manufacture of ammonia by Haber process is: MCQ with Answer and Explanation

The catalyst used in the manufacture of ammonia by Haber process is:
A. V₂O₅
B. Fe
C. Ni
D. Pt
Answer: Option B
Solution (By JKSSB Mock Tests)
Haber process: N₂ + 3H₂ ⇌ 2NH₃ using finely divided iron catalyst with promoters (K₂O, Al₂O₃). Pt in Ostwald for HNO₃, V₂O₅ in Contact for H₂SO₄, Ni in hydrogenation.

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More chemistry Questions

Question #1
Thermosetting plastics cannot be remolded because they:
A. Are biodegradable
B. Are linear polymers
C. Have cross-linked structure
D. Melt at high temperature

Correct Answer: Option C


Explanation:
Thermosets (e.g., Bakelite) form extensive cross-links between polymer chains, making them rigid. Heating breaks bonds but degrades, not remolds. Thermoplastics are linear/branched.

This question belongs to: Science chemistry
Question #2
The setting of plaster of Paris involves:
A. Hydration to form gypsum
B. Oxidation
C. Dehydration
D. Carbonation

Correct Answer: Option A


Explanation:
Plaster of Paris (CaSO₄·½H₂O) sets by rehydrating to gypsum (CaSO₄·2H₂O) when mixed with water: CaSO₄·½H₂O + 1½H₂O → CaSO₄·2H₂O. The interlocking crystals of gypsum provide hardness. It expands slightly on setting, making it ideal for casting. Dehydration is the opposite. Oxidation and carbonation are not involved.

This question belongs to: Science chemistry
Question #3
Which of the following is a saturated carbon compound?
A. C₃H₆
B. C₄H₁₀
C. C₂H₂
D. C₂H₄

Correct Answer: Option B


Explanation:
C₄H₁₀ (butane) follows CnH₂n+2, indicating no double or triple bonds, i.e., saturated alkane. C₂H₄ is ethene (alkene), C₃H₆ could be propene or cycloalkane (but alkene formula), C₂H₂ is ethyne (alkyne). Saturated hydrocarbons contain only single bonds and undergo substitution reactions.

This question belongs to: Science chemistry