Q .     Which of the following statements about the depletion of ozone layer is corrects

JEE Paper 1
A

Oxides of nitrogen also do not react with ozone in stratosphere.

B

The problem of ozone depletion is less serious at poles because NO_2 solidifies and is not available for consuming ClO radicals.

C

The problem of ozone depletion is more serious at poles because ice crystals in the clouds over poles act as catalyst for photochemical reactions involving the decomposition of ozone by Cl and ClO radicals.

D

Freons, chlorofluorocarbons, are inert chemically, they do not react with ozone in stratosphere.

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