A) Sulphur Dioxide
B) Radon
C) Carbon Monoxide
D) Sulphuric Acid
Correct Answer: D
Solution :
[d] A primary pollutant is an air pollutant emitted directly from a source. A secondary pollutant is not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.You need to login to perform this action.
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