Air pollutants - Environment & Biodiversity

Q.  Which of the following are primary air pollutants?

1) Ozone
2) Methane
3) Benzene
4) Particulate Matter
5) Oxides of Nitrogen

- Published on 31 Aug 15

a. Only 1, 3, 4 and 5
b. Only 1, 2, 4 and 5
c. Only 2, 3, 4 and 5
d. All of the above

ANSWER: Only 2, 3, 4 and 5
 
Primary air pollutants are – Particulate matter (both solid and liquid suspensions), Oxides of carbon, nitrogen and sulphur, hydrocarbons like methane and benzene, etc. Secondary air pollutants are – ozone, sulphur trioxide, etc.

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