250+ TOP MCQs on Inorganic Chemical – Hydrazine and Answers

Chemical Industry Multiple Choice Questions on “Inorganic Chemical – Hydrazine”.

1. What is the molecular weight of hydrazine?
a) 28
b) 30
c) 32
d) 17

Answer: c
Clarification: Molecular formula of hydrazine is N₂H₄. 2 nitrogen atoms and 4 hydrogen atoms make 1 mole of N₂H₄. Molecular weight = 2*14 + 4*1 = 32.

2. Hydrazine is miscible with water. Is the statement true/false?
a) True
b) False

Answer: a
Clarification: Hydrazine is miscible with water since it mixes in all proportions with water. It is also miscible with low molecular weight alcohols and forms constant boiling mixture with 28.5 weight % water.

3. What is the percentage of N₂H₄ present in hydrazine hydrate?
a) 64% N₂H₄
b) 80% N₂H₄
c) 98% N₂H₄
d) 50% N₂H₄

Answer: a
Clarification: Percentage of N₂H₄ present in hydrazine hydrate is 64% N₂H₄ whereas 98% N₂H₄ present in the anhydrous hydrazine produced from the distillation of hydrazine hydrate.

4. The gas produced in the side reaction of ammonia-sodium hypochlorite process is _________
a) H₂
b) N₂
c) Cl₂
d) O₂

Answer: b
Clarification: The side reaction of ammonia-sodium hypochlorite process is 2NH₂Cl+N₂H₄ →2NH₄Cl+N₂, hence the gas produced is nitrogen.

5. Inhibitor used in the formation of chloro amine is ___________
a) Aspirin
b) Nitric oxide
c) Glycol
d) Gelatin

Answer: d
Clarification: Aqueous ammonia reacts with sodium hypochlorite in 3:1 ratio to produce chloro amine and sodium hydroxide in presence of glue or gelatin inhibitor.

6. Which gas is used for shipping anhydrous hydrazine?
a) Nitrogen
b) Nitric oxide
c) Oxygen
d) Chlorine

Answer: a
Clarification: Nitrogen gas is used for shipping anhydrous hydrazine in stainless steel drums. A little bit of Organic inhibitor is added for providing stability.