Which of the following gases is regarded as an atmospheric pollutant?
A
O2
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B
O3
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C
SO2
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D
N2
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Solution
The correct option is DSO2
Oxygen (O2), nitrogen (N2) and ozone (O3) are components of the atmosphere. So, they are naturally present. But, sulfur dioxide (SO2) is a pollutant causing diseases in humans, plants and animals.