Which of the following particulate matters (size based) are notified pollutants in National Ambient Air Quality Standards (NAAQS)?
PM 10 and PM 3.5
PM 9 and PM 2.5
PM 10 and PM 2.5
PM 5 and PM 3.5
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC Geoscientist – 2020
– PM10 refers to particles with a diameter of 10 micrometers or less.
– PM2.5 refers to fine particles with a diameter of 2.5 micrometers or less.
– Both PM10 and PM2.5 are regulated under NAAQS due to their significant health impacts.
– Other pollutants listed in NAAQS include Sulphur Dioxide (SO₂), Nitrogen Dioxide (NO₂), Carbon Monoxide (CO), Ozone (O₃), Lead (Pb), Ammonia (NH₃), Benzene (C₆H₆), Benzo(a)Pyrene (BaP), Arsenic (As), and Nickel (Ni).