46. Water falls and rapids are commonly found in

1. 1. Upper course of a river

   
   
   

   2. Middle course of a river

   
   
   

   3. Lower course of a river

   
   
   

   4. Area near the mouth of a river

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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47. Which one of the following is not a soil forming process

1. 1. Weathering

   
   
   

   2. Translocation

   
   
   

   3. Gleying

   
   
   

   4. Hydration

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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48. The concept of Ice Age was first put forward by

1. 1. Louis

   
   
   

   2. Jean de Charpentier

   
   
   

   3. James Geike

   
   
   

   4. De Geer

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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49. A weathering process in which layers of rocks peel off as expansion alternates with contraction, in known as

1. 1. Shattering

   
   
   

   2. Block separation

   
   
   

   3. Granular disintegration

   
   
   

   4. Exfoliation

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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50. Cloudy Nights are warner compared to clear cloudless night because clouds

1. 1. Prevent cold waves from the sky from decending on earth

   
   
   

   2. Reflect back the heat given by earth

   
   
   

   3. Produce heat and radiate it towards the earth

   
   
   

   4. Absorb heat from the atmosphere and send it towards earth

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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