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In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?
A
Fe
B
Cl
C
Carbon
D
Oxygen
Explanation
Cl atoms from CFCs catalytically destroy ozone.
Detailed Solution
UV rays act on CFCs, releasing Cl atoms; chlorine reacts with ozone in a sequential (catalytic) manner, converting it into oxygen.
Carbon, oxygen and Fe are not related to ozone layer depletion.