Q. Consider the following:
1.Chlorofluorocarbons (CFCs)
2.Methyl bromide
3.Carbon tetrachloride
4.Halons
5.Iodine
Which of the above are responsible for the depletion of Ozone?

[A] 1, 2 and 3 only

[B] 2, 4 and 5 only

[C] 1, 3, 4 and 5 only

[D] 1, 2, 3, 4 and 5

Answer: D
Notes:

Ozone depleting substances include: a) chlorofluorocarbons (CFCs), b) hydrochlorofluorocarbons (HCFCs), c) hydrobromoflurocarbons (HBFCs), d) halons, e) methyl bromide, f) carbon tetrachloride g) methyl chloroform.

Recently scientist has found that iodine is also enabling ozone depletion on arctic.

Source: https://www.indiatoday.in/science/story/scientists-discover-cfc-is-not-alone-in-destroying-ozone-there-is-another-culprit-2000731-2022-09-15