• a-4 , b-2 , c-3 , d-1

• a-4 , b-3 , c-1 , d-2

• a-3 , b-4 , c-2 , d-1

• a-4 , b-3 , c-2 , d-1

In Koppen's classification of climate the symbol Aw refers to :

• Monsoon climate

• Tropical rainforest climate

• Steppe climate

• Tropical Savanna climate

ASSERTION (A) : Tropical climates are of special geographical interest.

REASON (R) : Over 75% of the World's population inhabits between latitudes of 30°N to 30°S

• Both (A) and (R) are true and (R) is correct explanation of (A).

• Both (A) and (R) are true but (R) is not correct explanation of (A).

• (A) is true , but (R) is false.

• (A) is false , but (R) is true.

Which one of the following is the main energy source for the formation of thunderstorms ?

• Geothermal energy of the Earth

• Latent heat derived from condensed water vapour

• Large scale fossil fuel burning

• Formation of Ozone(O₃) hole

Which one of the followings is the correct average air mass density at the surface of the Earth ?

• 0.9 kg m^-3

• 1.2 kg m^-3

• 1.5 kg m^-3

• 0.7 kg m^-3

In which one of the following atmospheric layers the temperature decreases with height at an average rate of about 0.6°C per 100m ?

• Troposphere

• Stratosphere

• Thermosphere

• Ionosphere

Which one of the following represents a source of atmospheric energy ?

• Infrared radiation emitted downward from clouds.

• Visible radiation scattered upward into the space.

• Latent heat released

• Albedo of the earth and the atmosphere

Which one of the following processes is important for the formation of lightning in a developing cloud ?

• Absorption of solar cosmic rays

• Small lapse rate

• Strong vertical air currents

• Heavy rainfall

ASSERTION (A) : Land surface is heated more quickly and to agreater extent than the water surface when subjected to equal amount of insolation.

REASON (R) : The land is opaque while water is transparent to solar energy.

• Both (A) and (R) are true and (R) is the correct explanation of (A).

• Both (A) and (R) are true but (R) is not the correct explanation of (A).

• (A) is true , but (R) is false.

• (A) is false , but (R) is true.

Which one of the 'C' types of climate receives the bulk of its precipitation during the cold season ?

• Cfa

• Cs

• Cwa

• Cfc