Q. Which of the following pollutant/s is/are part of National Air Quality Index (NAQI)?
1.Carbon dioxide
2.Carbon monoxide
3.Methane
Select the correct answer from the given codes:
Answer: D
Notes:
Explanation: National Air Quality Index (NAQI) is released by Central Pollution Control Board (CPCB).
It Includes 8 pollutants-PM10, PM2.5, NO2, Ozone, SO2, CO, NH3 and lead (Pb).
Source: FORUMIAS

