Which gas is responsible for the Earth’s ‘Ozone’ depletion?
ANitrogen
BOxygen
CCFCs
DMethane
Explanation
• Chlorofluorocarbons (CFCs) were commonly used in refrigerators and aerosols.
• They break down in the stratosphere, releasing chlorine atoms that destroy ozone molecules.
• International agreements like the Montreal Protocol have significantly reduced their use.
Exam Relevance
- Topic: Competitive Exams
- Subtopic: FPSC/PPSC Past Papers

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