UPSC Civil Services 2011 Prelims General Studies Paper I

Question : 9 of 100

Marks: +1, -0

The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole ?

Presence of prominent tropo-spheric turbulence; and inflow of chlorofluorocarbons.
Presence of prominent polar front and stratospheric clouds; and inflow of chlorofluorocarbons.
Absence of polar front and stratospheric clouds; and inflow of methane and chlorofluorocarbons.
Increased temperature at polar region due to global warming.

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