Which gas is primarily responsible for the ‘Ozone depletion’?
ACFCs
BOxygen
CCarbon Dioxide
DNitrogen
Explanation
• Chlorofluorocarbons (CFCs) rise into the stratosphere and break down ozone molecules.
• This leads to thinning of the ozone layer, allowing more UV radiation to reach Earth.
• Their use was largely phased out by the Montreal Protocol.
Exam Relevance
- Topic: Competitive Exams
- Subtopic: FPSC/PPSC Past Papers

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