| R is an organic compound containing only carbon, chlorine and fluorine. It has been widely used as refrigerant, propellent and solvent. Montreal protocol phased out manufacture of such compounds because, R contributes to S in the atmosphere. |
| Which of the following would not be a consequence of S? |
A) Increased incidences of severe sunburns
B) Increased incidences of cataracts
C) Increased incidences of premature skin ageing
D) Increased incidences of diabetes
Correct Answer: D
Solution :
'R' is chlorofluorocarbon (CFC). CFCs reach the stratosphere and release active chlorines which react with ozone layer. This results in thinning of ozone layer over a restricted area. Such an area is called ozone hole (S). This causes more UV radiations to pass through ozone hole which then strike the Earth. UV radiations cause various harmful effects such as increased incidences of sunburns, cataracts and premature skin ageing.
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