Question

which of the following is ordinarily not considered pollutant? (a) CO (b) NO (c) SO2 (d) O2​

Answer 1

Answer:

Explanation:Carbon dioxide

Answer 2

Ans Co2 is not regaurded as polutant

but it isn't in these option

CO( carbon monoxide) is a poisonous gas

(No) is also a monoxide

So2 is very bad smelling gas

if you want to chose one you can go for

O2 oxygen

if there is option of( None of these ) it will be the best option

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