The region in which ozone layer depletes is called ozone…………
a) hole
b) allotrope
c) occurrence
d) liquefied
Causes of ozone layer depletion:-
Things that lead to destruction of ozone gas in ozone layer depletion are…………
a) production of CFCs
b) emission of CFCs
c) both a & b
d) none of these
CFCs leads to almost …………of the total ozone layer depletion.
a) 60%
b)70%
c) 80%
d) 90 %
………… leads to ozone layers depletion.
a) HCFCs
b) VOCs
c) CFCs
d) all of these
Explanation:HCFCs stands for hydro-chloro-flouro-carbons
HCFCs and VOCs are found in…………
a)vehicle exhaust emission
b) by- products of industrial processes
c) aerosols and refrigerants
d) all of these
