Which of the following is Not correctly matched ?

The correct answer is D. Kyoto Protocol is linked to climate change, not water conservation. It was adopted in 1997 under the UNFCCC and came into force in 2005, with legally binding greenhouse gas emission reduction targets for developed (Annex I) countries. Its mechanisms include emissions trading, the Clean Development Mechanism and Joint Implementation.

The other three pairs are correctly matched:

• A) Cartagena Protocol and biosafety: A supplementary agreement to the Convention on Biological Diversity (2000), dealing with the safe transfer, handling and use of living modified organisms (LMOs).
• B) Stockholm Convention and POPs: Adopted in 2001 to eliminate or restrict persistent organic pollutants such as DDT and PCBs.
• C) Montreal Protocol and ozone layer: Adopted in 1987 to phase out ozone-depleting substances like CFCs. It is often called a model environmental treaty.

This sits within the Environment and International Organisations sections of the syllabus. For Mains, Kyoto versus Paris Agreement, and the common but differentiated responsibilities principle, are frequent themes.

Trap: Candidates sometimes link Kyoto with water because of a vague memory of a Japanese city or conference. Match each protocol to its specific subject area, not to a loosely related word.