Statement (1) CFCs are broken down by powerful UV radiation and releases chlorine free radical which reacts with ozone and start chain reaction. CF2Cl2(g)
UV
────▸
•
C
l(g)+
•
C
F2Cl(g)
•
C
l(g)+O3(g)→
•
C
lO(g)+O2(g)
•
C
O(g)+O(g)→
•
C
l(g)+O2(g) Statement (2) Atmosphere ozone reacts with nitric oxide to produce nitrogen dioxide and oxygen. NO(g)+O3(g)→NO2(g)+O2(g)