Question on: JAMB Chemistry - 2024
Which of the following is an air pollutant?
A
O2
B
CO
C
H2O(g)
D
O3
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Correct Option: B
An air pollutant is a substance in the air that can cause harm to humans and the environment.
- CO (Carbon monoxide) is a poisonous gas produced by incomplete combustion of fuels. It is a significant air pollutant.
- O2 (Oxygen) is essential for life and a component of clean air.
- H2O(g) (Water vapor) is a natural component of air and a greenhouse gas, but not typically considered a primary air pollutant in the same way as CO.
- O3 (Ozone) can be an air pollutant, especially at ground level, where it is a component of smog. However, it is naturally present in the stratosphere where it protects against UV radiation.
Since CO is more directly and significantly an air pollutant in the context of this question, CO is the better answer.
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