Correct option is B
(b) CFC
Chlorofluorocarbons (CFCs) are the primary cause of ozone layer depletion, as they release chlorine atoms that break down ozone (O₃) in the stratosphere.
Information Booster:
- CFCs are found in refrigerants, aerosols, and foam production.
- They cause ozone holes, mainly over Antarctica.
- Montreal Protocol (1987) aims to phase out CFCs.
- Ozone protects Earth from harmful UV rays.
- CO₂, CH₄, and N₂O contribute to global warming but not ozone depletion.
Additional Information:
- HFCs (Hydrofluorocarbons) are alternatives but also greenhouse gases.
- Ozone layer depletion leads to increased UV radiation exposure, causing skin cancer.
English
25 Questions
100 Marks
20 Mins
