India Exam Junction
[PSSSB JE, 2024]
9. Which of the following pollutants is not part of the eight pollutants monitored as major parameters in Air Quality Index (AQI)?
Sulphur dioxide (SO2)
Carbon monoxide (CO)
Nitrogen dioxide (NO2)
Carbon dioxide (CO2)
Correct Answer :
Carbon dioxide (CO2)
Solution
The Air Quality Index (AQI) monitors eight major pollutants: PM₂.₅, PM₁₀, ozone (O₃), nitrogen dioxide (NO₂), sulfur dioxide (SO₂), carbon monoxide (CO), ammonia (NH₃), and lead (Pb). Carbon dioxide (CO₂) is not included in the AQI because it is a greenhouse gas and not a direct indicator of air quality affecting immediate human health.