Question

Montreal Protocol was signed in

• A. $1978$
• B. $1987$
• C. $1991$
• D. $1993$

Answer 1

The correct option is B $1987$

Montreal Protocol on the substances that deplete the ozone layer was signed on 16-September-1987 in Montreal and became effective from 26-August-1989. It is the protocol to the Vienna Convention for the protection of the ozone layer. It is an international treaty that sought to phase out the halons by 1994, CFCs, by 1996, methyl bromide by 2005 and HCFCs by 2030.

Hence, the correct answer is '1987'