Q. Which of the following Greenhouse Gases is/are ozone depleting?

1. Chlorofluorocarbon
2. Carbon tetrachloride
3. Hydrofluorocarbon
4. Perfluorocarbons

Choose the correct answer using the codes given below:
Answer: Only 1 & 2
Notes: Chlorofluorocarbons (CFCs) and carbon tetrachloride are ozone-depleting substances and potent greenhouse gases. Carbon tetrachloride has been phased out in India under the Montreal Protocol. Hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs) are greenhouse gases that do not deplete ozone. HFCs are substitutes for CFCs, while PFCs are used in refrigerants and solvents.

This question is part of UPSC Daily 20 MCQ Series Course on GKToday Android app.