Question

79. Which of the following are Ozone Depleting Substances ?

1. Halons

2. Carbon Tetrachloride

3. Hydro chlorofluorocarbons HCFCs.

4. Hydro fluorocarbons HFCs.

5. Chlorofluorocarbons CFCs.

Options:

• A. a. 1 and 3 only
• B. b.1, 2, 3 and 5 only
• C. c. 2 and 4 only
• D. d. 1, 2, 3, 4 and 5

Answer 1

The correct option is B

b.1, 2, 3 and 5 only

B)

The Main Ozone-Depleting Substances ODS.

• Chlorofluorocarbons CFCs.

• Halons brominated fluorocarbons.

• Methyl Chloroform

• Carbon Tetrachloride

• Hydrochlorofluorocarbons HCFCs.

HFC are not ozone depleting but are potent greenhouse gases.