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Q.

Montreal protocol was signed in which year?

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a

1978

b

1993

c

1991

d

1987

answer is D.

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Detailed Solution

  • Montreal protocol was signed in 1987 by several nations.
  • Montreal protocol was done to avoid or to reduce the production or usage of ozone-depleting substances.
  • Ozone-depleting substances directly affect the ozone layer in the stratosphere thereby permitting the flow of harmful UV rays on earth.
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