(i) Chlorofluorocarbons (CFCs) have been linked to depletion of ozone layer. In 1987, the United Nations Environment…

CBSE Class 10 Science PYQ · Our Environment · Ozone layer and its depletion · 2 Marks · March 2026 · Standard

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162 Marks · March 2026 · Standard
(i) Chlorofluorocarbons (CFCs) have been linked to depletion of ozone layer. In 1987, the United Nations Environment Programme (UNEP) succeeded in making an agreement. State this agreement.
(ii) What is the role of ozone in our atmosphere ?
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(i) To freeze the CFC production at 1986 levels.
(1)
(ii) Ozone shields the earth's surface from harmful UV radiations.
(1)
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