The major cause of ozone depletion is due to which chemical?

Major cause of ozone depletion is due to which chemical?

Which of the is responsible for depletion of ozone layer? Options are :-

Smog

Carbon monoxide

Nitrogen dioxide

Chlorofluorocarbons

The major cause for depletion of ozone layer in stratosphere is due to the

Q74) How are Green House Effect and Ozone layer depletion related?

i) Greenhouse effect causes ozone layer depletion

ii) Ozone layer depletion causes greenhouse effect.

iii) There is no relation between the two phenomena.

iv) Chlorofluorocarbons are one of the culprits in both the cases.

Which of the above statements are true?