Environmentalhard · Past Paper
What is the primary mechanism by which CFCs destroy ozone?
ADirect oxidation of ozone
BChlorine atoms act as a catalyst in a chain reaction
CCFCs absorb UV rays instead of ozone
DThey react with oxygen to form CO2
✓ Correct Answer: B — Chlorine atoms act as a catalyst in a chain reaction
A single chlorine atom from a CFC molecule can destroy thousands of ozone molecules through a catalytic cycle.
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