UPSC Government Jobs Exams

The function of heavy water in a nuclear reactor is to [UPSC 2011 (CS-P)]

Slow down the speed of neutrons
Increase the speed of neutrons
Cool down the reactor
Stop the nuclear reaction

Read Solution (Total 0)

UPSC Other Question
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?[UPSC 2011 (CS-P)]

Presence of prominent tropospheric 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 The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon? [UPSC 2011 (CS-P)]

It has high rainfall that supports luxuriant vegetative growth
It is a confluence of different bio-geographical zones
Exotic and invasive species have not been introduced in this region
It has less human interference