Montreal protocol was signed in 1987 for control of [NEET 2020]

Explanation

The Montreal Protocol, signed in 1987, is an international treaty designed to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances (ODS).

These substances include:

• Chlorofluorocarbons (CFCs)

• Halons

• Carbon tetrachloride

• Methyl chloroform, etc.

These chemicals were commonly used in:

• Refrigerants

• Aerosol sprays

• Foam-blowing agents

The protocol has been remarkably successful and is considered one of the most effective environmental agreements globally.

Why other options are incorrect:

• A. Release of greenhouse gases – Covered by the Kyoto Protocol (1997) and Paris Agreement (2015), not Montreal.

• B. Disposal of e-wastes – Regulated by national rules and the Basel Convention, not Montreal Protocol.

• C. Transport of Genetically Modified Organisms – Covered under the Cartagena Protocol on Biosafety (2000).

• Final Answer: D. Emission of ozone depleting substances