Question

Q Which of the following are Ozone Depleting Substances (ODS)?

Select the correct answer using the code given below.

• A.
  1 and 3 only
• B.
  1, 2, 3 and 4 only
• C.
  2 and 4 only
• D.
  1, 2, and 4only

Answer 1

The correct option is D

1, 2, and 4only

Explanation: Ozone depleting substances are chemicals that destroy the earth's protective ozone layer. They include:

• Chlorofluorocarbons (CFCs)
• Halon.
• Carbon tetrachloride (CCl4)
• Methyl chloroform (CH3CCl3)
• Hydrobromofluorocarbons (HBFCs)
• Hydrochlorofluorocarbons (HCFCs)
• Methyl bromide (CH3Br)
• Bromochloromethane (CH2BrCl)

HFCs are not included as ODS.