Q22. Consider the following statements : Statement-I : Thickness of the troposphere at the equator is much greater as compared to poles. Statement-II : At the equator, heat is transported to great heights by strong convectional currents. Which one of the following is correct in respect of the above statements?

Assertion (A) : Thickness of the atmosphere is maximum over the Equator. Reason (R) : High insolation and strong convection currents occur over the Equator.

Consider the following statements : Statement-I : The atmosphere is heated more by incoming solar radiation than by terrestrial radiation. Statement-II : Carbon

Given below are two statements one labelled as Assertion (A) and the other labelled as Reason (R). Assertion (A) : Areas near the equator receive rainfall throu

Consider the following statements : Statement-I : The soil in tropical rain forests is rich in nutrients. Statement-II : The high temperature and moisture of tr

Consider the following statements : Statement-I: The temperature contrast between continents and oceans is greater during summer than in winter. Statement-II: T

The jet aircraft fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation? 1. There are no clouds or water vapour in th

With reference to the Earth’s atmosphere, which one of the following statements is correct?

Assertion (A): Areas lying within five to eight degrees latitude on either side of the equator receive rainfall throughout the year. Reason (R): High temperatur

Consider the following statements : 1. High clouds primarily reflect solar radiation and cool the surface of the Earth. 2. Low clouds have a high absorption of

Normally, the temperature decreases with the increase in height from the Earth’s surface, because : 1. The atmosphere can be heated upwards only from the Earth’

Consider the following statements: 1. Biodiversity is normally greater in the lower latitudes as compared to the higher latitudes. 2. Along the mountain gradien

Assertion (A) : The amount of moisture in the atmosphere is related to latitude. Reason (R) : The capacity to hold moisture in the form of water vapour is relat

Consider the following statements: 1. In the tropical zone, the western sections of the oceans are warmer than the eastern sections owing to the influence of tr

Consider the following statements : 1. Jet streams occur in the Northern Hemisphere only. 2. Only some cyclones develop an eye. 3. The temperature inside the ey

A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why? 1. The presence of ozone causes the reflection of radio waves to Earth

Consider the following statements : 1. The winds which blow between 30°N and 60°S latitudes throughout the year are known as westerlies. 2. The moist air masses

Westerlies in the southern hemisphere are stronger and persistent than in the northern hemisphere. Why? 1. Southern hemisphere has less landmass as compared to

Consider the following statements : 1. Either of the two belts over the oceans at about 30° to 35° N and S Latitudes is known as Horse latitude. 2. Horse latitu

Assertion (A) : The surface winds spiral inwards upon the centre of the cyclone. Reason (R) : Air descends in the centre of the cyclone.

Assertion (A) : 60° - 65° latitudes in both the hemispheres have a low pressure belt instead of high pressure. Reason (R) : The low pressure areas are permanent

Consider the following statements: 1. Annual range of temperature is greater in the Pacific Ocean than that in the Atlantic Ocean. 2. Annual range of temperatur

Consider the following statements: Statement-I: Rainfall is one of the reasons for the weathering of rocks. Statement-II: Rain water contains carbon dioxide in

Consider the following statements: 1. The duration of the monsoon decreases from southern India to northern India. 2. The amount of annual rainfall in the north

Why are dewdrops not formed on a cloudy night? (a) Clouds absorb the radiation released from the Earth’s surface. (b) Clouds reflect back the Earth’s

In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclones do not originate. What is the reason ? (a) Sea surface tempera

“Each day is more or less the same, the morning is clear and bright with a sea breeze; as the Sun climbs high in the sky, heat mounts up, dark clouds

The seasonal reversal of winds is the typical characteristic of :

The annual range of temperature in the interior of the continents is high as compared to coastal areas. What is/are the reason/reasons ? 1. Thermal di

During a thunderstorm, the thunder in the skies is produced by the : 1. Meeting of cumulonimbus clouds in the sky. 2. Lightning that separates the nim

Which one of the following reflects back more sunlight as compared to the other three ?

What causes wind to deflect toward the left in the Southern Hemisphere ?