state gov OSSSC RI, ARI, AMIN, SFS, ICDS Supervisor Combined Mock Test 2023-25 Current Affairs Environment
Which of the following group of pollutants is not covered under National Ambient Air Quality Standards (NAAQS)?
1
SO2, NO2 and O3
2
PM10 and PM2. 5
3
CO2, NH3 and Benzene
4
Arsenic, Nickel and Lead