Chemical Engineering - Environmental Engineering - Discussion

Discussion Forum : Environmental Engineering - Section 1 (Q.No. 25)

Environmental Engineering

25.

Which is a secondary air pollutant ?

Photochemical smog

Sulphur dioxide

Nitrogen dioxide

Dust particles

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

3 comments Page 1 of 1.

Prakash Rudra said: 5 years ago

Photochemical smog is primary air pollutants, NOx are secondary air pollutants.

(1)

Bdee said: 9 years ago

Secondary pollutants are formed from Photochemical reactions of primary pollutants like NOx, HCs, O3 etc.

Answer is Photochemical smog.

Avinash said: 3 years ago

NOx is the secondary pollutant because it forms from primary pollutants NO+O in the air so it is the secondary pollutant.

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