31) which is a secondary air pollutant? options a) photochemical smog b) sulphur dioxide c) nitrogen dioxide d) dust particles
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The ans is nitrogen di-oxide.
The photochemical smog is the result of formation of secondary air pollutant.
According to some source NO2 acts as both primary and secondary air pollutant. SO2 and dust particles are primary air pollutant which enters in air directly from the source.
The photochemical smog is the result of formation of secondary air pollutant.
According to some source NO2 acts as both primary and secondary air pollutant. SO2 and dust particles are primary air pollutant which enters in air directly from the source.
satadal63:
Hpoe you're helped. Well question dude.
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