Question

In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent depletion of “Y”. “X” and “Y” respectively referred here are:

a) Ozone; CFCs

b) CFCs; rays UV

c) CFCs; Ozone

d) UV rays; Diatomic oxygen

Answer 1

Correct option is (c) CFCs; Ozone

Explanation: In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent depletion of “Y”. “X” and “Y” respectively referred here are: CFCs; Ozone.