2013 · Q71
Statement I Ozone is produced naturally by the action of ultraviolet radiation on oxygen molecule (O2) in the upper atmosphere. Statement II Ozone depletion has been caused by the release of chloro fluorocarbons (CFCs) into the atmosphere.
general-scienceenvironment
- ABoth the statements are individually true and Statement II is the correct explanation of Statement I
- BBoth the statements are individually true but Statement II is not the correct explanation of Statement I
- CStatement I is true but Statement II is false
- DStatement I is false but Statement II is true
Explanation
Ozone is naturally produced by UV action on oxygen and CFCs caused its depletion, but the depletion statement does not explain the production statement - both true, II is not the explanation of I.