A) 1981
B) 1983
C) 1985
D) 1987
Correct Answer: D
Solution :
Montreal Protocol, a landmark international treaty to protect the ozone layer by agreeing to limit the production and use of ozone depleting substance was signed at Montreal in 1987 by 27 industrialised countries.You need to login to perform this action.
You will be redirected in
3 sec