Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers:

  • Option 1)

    Nitrous oxide

  • Option 2)

    Ozone

  • Option 3)

    Ammonia

  • Option 4)

    Methane

 

Answers (3)

As learnt

Degradation of ozone layers -

There should be a balance between production and degradation of ozone in the stratosphere. Of late, the balance has been disrupted due to enhancement of ozone degradation by chlorofluorocarbons (CFCs).

- wherein

CFCs find wide use as refrigerants. CFCs discharged in the lower part of atmosphere move upward and reach stratosphere. In stratosphere, UV rays act on them releasing Cl atoms. Cl degrades ozone releasing molecular oxygen, with these atoms acting merely as catalysts; Cl atoms are not consumed in the reaction. Hence, whatever CFCs are added to the stratosphere, they have permanent and continuing affects on Ozone levels.

 

 


Option 1)

Nitrous oxide

This option is incorrect

Option 2)

Ozone

This option is correct

Option 3)

Ammonia

This option is incorrect

Option 4)

Methane

This option is incorrect

Ozone

 

2

 

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