11.

Supercooled water is water which is -

• Produced from dry ice.

• A special form of ice

• Still liquid at temperature below 0°.

• Partly liquid and partly solid.

A place located at a higher altitude generally experiences _________ than a low elevation place in an adjoining valley.

• a greater daily temperature range.

• a lower annual mean temperature.

• a lower daily temperature range.

• both a greater daily temperature range and lower annual mean temperature.

ASSERTION (A) : Hurricanes cannot develop along the equatorial region.

REASON (R) : Coriolis force is at maximum over the equator.

• 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.

The actual amount of water vapour in a given quantity of air is greatest for which of the following temperature - relative humidity combinations ?

• 40° C - 100%

• 25° C - 100%

• 0° C - 100%

• 30° C - 50%

What happens when Chinook wind is drawn down the leeward slopes of the mountain range ? 

• The  saturation vapour pressure increase.

• The relative humidity increases.

• Both A and B are correct.

• Both A and B are wrong.

• a-1 , b-2 , c-3 , d-4

• a-4 , b-3 , c-2 ,d-1

• a-4 , b-3 , c-2 , d-1

• a-4 , b-2 , c-1 , d-3

The sea attained its present level during the geological period :

• Holocene

• Miocene

• Cambrian

• Jurassic

The pyramid of biomass is inverted in case of :

• Forest ecosystem

• Grassland ecosystem

• Marine ecosystem

• Fresh water ecosystem

Which one of the following percentages India contributes to world's biodiversity ?

• 2%

• 4%

• 6%

• 8%

Which one of the following temperatures of sea water is favourable for the formation of coral reefs ?

• At least 20° C

• At least 15° C

• At least 10° C

• At least 5° C