2017 · Q32
Statement ISkin cancer is generally caused by the ultraviolet radiation.
Statement IIStratosphere allows ultraviolet radiation to enter the earth from the sun.
General KnowledgeStatic General Awareness
- ABoth the statements are individually true and Statement II; is the correct explanation of Statement I
- BBoth the statements lie 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
Statement I is true: ultraviolet radiation, particularly UV-B, is the principal established cause of skin cancer. Statement II is false: the stratospheric ozone layer absorbs most of the Sun's ultraviolet radiation and prevents it from reaching the Earth's surface — it does not 'allow' UV radiation to enter. Since II is false, it cannot be the explanation of I. Only statement I is correct.