Environmentalmedium · Past Paper
What is the main chemical reaction by which CFCs destroy ozone?
ACFCs combine with ozone to form oxygen
BUV light releases chlorine from CFCs, which catalyzes ozone breakdown
CCFCs block sunlight from reaching the ozone
DCFCs turn ozone into carbon dioxide
✓ Correct Answer: B — UV light releases chlorine from CFCs, which catalyzes ozone breakdown
UV radiation breaks a chlorine atom off the CFC molecule. This chlorine atom then reacts with ozone (O3) to form ClO and O2.
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