alleryStart learning →Which international treaty began phasing out chemicals linked to ozone destruction?
AThe Antarctic Treaty, signed in 1987
BThe Kyoto Protocol, signed in 1987
CThe Montreal Protocol, signed in 1987
DThe Nature Accord, signed in 1974
Answer & Solution
Correct answer: C. The Montreal Protocol, signed in 1987
1. Molina and Rowland showed that chlorofluorocarbon gases threaten the ozone layer.
2. Their work led governments to act on the chemicals responsible.
3. The treaty adopted was the Montreal Protocol, signed in 1987.
4. It successfully began phasing out production of the chemicals linked to ozone destruction.
5. The date 1974 belongs to the research paper, not to the treaty.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 12 "Kinetics", section 12.7 Catalysis_
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