Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Environmental Science Environmental Geosciences Climatology
Among the gases : N2, O3, CO2, SO2, NOx, CO, and O2, the permanent atmospheric gases are
1
N2, O2 and CO2
2
CO2, SO2 and NOX
3
N2, O2 and O3
4
N2 and O2