CBSE
The ozone layer forms naturally by :
the interaction of CFC with oxygen
the interaction of UV radiation with oxygen
the interaction of IR radiation with oxygen
the interaction of oxygen and water vapour
Among the following, the one that is not a green house gas is:
Methane
Ozone
Sulphur dioxide
Nitrous oxide
Among the following, the one which is not a "green house gas", is
N2O
CO2
CH4
O2