Prelims G.S. Qquestion 42

Q. Which of the following are the gases whose presence in high concentration in the lower strata of atmosphere, is responsible for causing greenhouse effect ?

1) Sulphur dioxide

2) Carbon dioxide

3) Chlorofluorocarbons

4) Nitrogen

Codes:

A) 1 & 2

B) 2 & 3

C) 3 & 4

D) 1,2,3,4