81) “Climate is extreme, rainfall is scanty and the people used to be nomadic herders.” The above statement best describes which of the following regions?
  1. African Savannah
  2. Central Asian Steppe
  3. North American Prairie
  4. Siberian Tundra
 

82) The Narmada river flows to the west, while most other large peninsular rivers flow to the east. Why?
  1. It occupies a linear rift valley.
  2. It flows between the Vindhyas and the Satpuras.
  3. The land slopes to the west from Central India.
Select the correct answer using the codes given below.
  1. 1 only
  2. 2 and 3
  3. 1 and 3
  4. None


83) Consider the following statements:
  1. Natural gas occurs in the Gondwana beds.
  2. Mica occurs in abundance in Kodarma.
  3. Dharwars are famous for petroleum.
Which of the statements given above is/are correct?
  1. 1 and 2
  2. 2 only
  3. 2 and 3
  4. None

84) Consider the following pairs :
  1. Limboo (Limbu) : Sikkim
  2. Karbi : Himachal Pradesh
  3. Dongaria : Odisha
  4. Bonda : Tamil Nadu
Which of the above pairs are correctly matched?
  1. 1 and 3 only
  2. 2 and 4 only
  3. 1, 3 and 4 only
  4. 1, 2, 3 and 4


85) Variations in the length of daytime and night time from season to season are due to
  1. the earth’s rotation on its axis
  2. the earth’s revolution round the sun in an elliptical manner
  3. latitudinal position of the place
  4. revolution of the earth on a tilted axis


86) On the planet earth, most of the freshwater exists as ice caps and glaciers. Out of the remaining freshwater, the largest proportion
  1. is found in atmosphere as moisture and clouds
  2. is found in freshwater lakes and rivers
  3. exists as groundwater
  4. exists as soil moisture


87) 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 nimbus clouds
  3. violent upward movement of air and water particles
Select the correct answer using the codes given below.
  1. 1 only
  2. 2 and 3
  3. 1 and 3
  4. None of the above produces the thunder


88) 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 difference between land and water.
  2. Variation in altitude between continents and oceans.
  3. Presence of strong winds in the interior
  4. Heavy rains in the interior as compared to coasts.
  1. 1 only
  2. 1 and 2 only
  3. 2 and 3 only
  4. 1, 2, 3 and 4


89) Consider the following:
  1. Electromagnetic radiation
  2. Geothermal energy
  3. Gravitational force
  4. Plate movements
  5. Rotation of the earth
  6. Revolution of the earth
Which of the above are responsible for bringing dynamic changes on the surface of the earth?
  1. 1, 2, 3 and 4 only
  2. 1, 3, 5 and 6 only
  3. 2, 4, 5 and 6 only
  4. 1, 2, 3, 4, 5 and 6


90) Which one of the following pairs is correctly matched?
  1. Abyssinian Plateau : Arabia
  2. Atlas Mountains : North-Western Africa
  3. Guiana Highlands : South-Western Africa
  4. Okavango Basin : Patagonia