Class 12th Biology 2016 Set1 Outside Delhi Board Paper Solution
Question 10
Explain the relationship between CFC’s and Ozone in the stratosphere.
Answer
Relationship between CFC’s and Ozone :
When CFC’s are released into the stratosphere, they end up being broken up by the UV light, resulting in chlorine being released. This acts like a catalyst with the ozone molecules creating chlorine monoxide and molecular oxygen. Cl atoms are not consumed in the reaction. Hence whatever CFCs are added to the stratosphere, they have permanent and continuing affects on ozone level.
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