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The depletion of ozone layer in the upper atmosphere is mainly due to the emission of:(a) unburnt hydrocarbons (b) chlorofluorocarbons (c) greenhouse gases (d) ultraviolet radiations
Correct Answer: (b) chlorofluorocarbons
Explanation: Chlorofluorocarbons emitted by air-conditioners, refrigerators, and jet planes cause the depletion of the ozone layer.
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