Question

Number of ozone depleters identified by Montreal Protocol (1987) was

• A. 12
• B. 8
• C. 6
• D. 4

Answer 1

The correct option is B 8

The Montreal Protocol on Substances that Deplete the Ozone, 1987 was meant to protect the ozone depletion by gradually phasing out the major ozone depleting substances. This protocol was signed to the Vienna Convention and identifies the following as ODS:

1. CFCs
2. Halons
3. CCl${}_4$
4. HCFCs
5. HBFCs
6. CH${}_3$Br
7. CH${}_2$BrCl
8. HFCs.

Hence, the correct answer is '8'