Chlorofluorocarbons are molecules which depletes the ________.
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:
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?
Which of the is responsible for depletion of ozone layer? Options are :-
Smog
Carbon monoxide
Nitrogen dioxide
Chlorofluorocarbons