Q. Which of the following pollutants are notified under “National Ambient Air Quality Standards (NAAQS)” by the Central Pollution Control Board?
1.Nitrogen Dioxide (NO₂)
2.PM2.5
3.Benzene
4.Methane
Select the correct answer using the code given below:

[A] 1 and 2 only

[B] 1, 2 and 3 only

[C] 2, 3 and 4 only

[D] 1, 2, 3 and 4

Answer: B
Notes:

Explanation:  NAAQS notified by the Central Pollution Control Board monitors pollutants such as: NO2, PM10, PM2.5, Ozone, Lead, CO, Ammonia, Benzene, Benzo(a)pyrene, Arsenic, and Nickel.

Methane is not included under NAAQS.

Source- IE

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