Environmental Science MCQs

Question 1

Ozone depletion is mostly caused by

Accepted Answer

CFCs

Answer

CO2

Answer

CCL

Answer

CO

Question 2

Which one of the following is the correct percentage of the two green house gases that contribute to the total global warming?

Accepted Answer

Methane-20%, N2O-18%

Answer

N2O-6%, CO2 -86%

Answer

CFCs -14%, Methane-20%

Answer

CO2-40%,CFCs-30%

Question 3

Pick out the potent green house gas

Accepted Answer

CH4

Answer

CO2

Answer

N2O

Answer

O3

Question 4

Global warming is caused by

Accepted Answer

GHGs

Answer

CFCs

Answer

CH4

Answer

NO2

Question 5

Warming in the stratosphere is mainly caused by:

Accepted Answer

Absorption of ultraviolet radiation by ozone

Answer

Release of latent heat energy during condensation

Answer

Chemical reactions between ozone and chlorofluorocarbons

Answer

Frictional heating caused by meteorites

Question 6

Major consumer of wood from forest is ___________

Accepted Answer

Paper Industry

Answer

Thermal Power Plant

Answer

Chemistry Industry

Answer

none

Question 7

_________ is the 12th Mega Biodiverse Country in the world.

Accepted Answer

India

Answer

America

Answer

China

Answer

Sri Lanka

Question 8

Which plants die after flowering?

Accepted Answer

Bamboo

Answer

Lotus

Answer

Chrysanthemum

Answer

Butea

Question 9

Although the polar regions radiate away more heat energy than they receive by insolation in the course of a year, they are prevented from becoming progressively colder each year by the:

Accepted Answer

Circulation of heat by the atmosphere and oceans

Answer

Conduction of heat through the interior of the earth

Answer

Concentration of earth's magnetic field lines at the poles

Answer

The insulating properties of snow