Multiple choice

The gaseous pollutant released from complete combustion of a fuel is

  1. Carbon monoxide

  2. Carbon dioxide

  3. Sulphur dioxide

  4. Hydrogen sulphide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is also a pollutant, when generated in large quantity, because it can reduce the oxygen concentration, in the air. It is a gas produced when fuel is burnt, in adequate oxygen. Normally, the atmospheric air will have 0.03% CO2 When it's concentration increases due to pollution, it reduces the percentage of oxygen in the atmosphere.

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