250+ TOP MCQs on Hydrogen Engine and Answers

IC Engines Multiple Choice Questions on “Hydrogen Engine”.

1. Hydrogen has very ______________ density both as gas and as liquid.
a) high
b) low
c) equal
d) none of the mentioned
Answer: b
Clarification: In both gas and in liquid form, hydrogen has very low density.

2. Hydrogen engine operate on ____________ throttling.
a) very little
b) very high
c) without
d) none of the mentioned
Answer: b
Clarification: Very high throttling is required in a hydrogen engine operation.

3. The power output of hydrogen engine is limited by ___________
a) detonation and knocking
b) pre-ignition and back flash
c) pre-ignition and detonation
d) none of the mentioned
Answer: b
Clarification: The power output of the hydrogen engine is limited by pre-ignition and back flash because detonation and knocking do not occur in the hydrogen engine.

4. Hydrogen gas has less than _______________ the density of air.
a) 1/12th
b) 1/10th
c) 2/3rd
d) 1/3rd
Answer: b
Clarification: None.

5. The heating value per unit volume of hydrogen gas is less than ______________ that of air.
a) 1/12th
b) 1/10th
c) 2/3rd
d) 1/3rd
Answer: d
Clarification: None.

6. Hydrogen can be used in S.I. engines by ___________
a) manifold induction
b) direct introduction of hydrogen into the cylinder
c) supplementing gasoline
d) all of the mentioned
Answer: d
Clarification: None.

7. Hydrogen is _____________ reactive fuel.
a) highly
b) non
c) less
d) none of the mentioned
Answer: a
Clarification: None.

8. Natural gas obtained from oil wells is known as ___________
a) dry gas
b) wet gas
c) casing head gas
d) none of the mentioned
Answer: c
Clarification: Another name for natural gas obtained from oil wells is casing head gas.