Which of the following statements about the depletion

Question:

Which of the following statements about the depletion of ozone layer is correct?

  1.  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

  2. The problem of ozone depletion is less serious at poles because $\mathrm{NO}_{2}$ solidifies and is not available for consuming $\mathrm{ClO}^{*}$ radicals

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

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


Correct Option: 1

Solution:

Solution not required

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