IC Engine Questions and Answers – Engine Emissions

This set of IC Engines Multiple Choice Questions & Answers (MCQs) focuses on “Engine Emissions”.

1. Pollutants are produced by the incomplete burning of the air-fuel mixture in the combustion chamber.
a) True
b) False
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2. What are the major pollutants emitted from the exhaust due to incomplete combustion?
a) carbon monoxide
b) hydrocarbons
c) oxides of nitrogen
d) all of the mentioned
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3. _____________is a colourless gas of about the same density of air.
a) Carbon monoxide
b) Hydrocarbons
c) Oxides of nitrogen
d) All of the mentioned
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4. Carbon monoxide is a poisonous gas which, when inhaled, replaces the oxygen in the blood stream so that the body’s metabolism can not function correctly.
a) True
b) False
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5. Large amounts of CO concentrations, when breathed in, slow down physical and mental activity and produces headaches, while large concentration will kill.
a) True
b) False
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6. The amount of CO formed ______________ as the mixture becomes more and more rich in fuel.
a) decreases
b) increases
c) remains same
d) none of the mentioned
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7. A small amount of CO will come out of the exhaust even when the mixture is slightly lean in fuel.
a) True
b) False
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8. As the products cool down to exhaust temperature, a minor part of CO reacts with oxygen to form Co₂.
a) True
b) False
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9. If the combustion is complete, the only products being expelled from the exhaust would be water vapour and carbondioxide.
a) True
b) False
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10. Air pollution is defined as an addition to our atmosphere of any material which will have a deleterious effect on life upon our planet.
a) True
b) False
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Sanfoundry Global Education & Learning Series – IC Engine.

To practice all areas of IC Engine, here is complete set of 1000+ Multiple Choice Questions and Answers.