166. Match List - I (Terms) with List - II (Explanations) and select the correct answer using the codes given below the lists
     

     	List - I		List - II
     F.	Podzols	1.	Black earth soil in Russia
     G.	Terra-rossa	2.	Ash soil of Siberia
     H.	Chernozem	3.	A brown peducal soil of great plains of U.S.A.
     J.	Chestnut	4.	Mediterranean reddish clay / Ioam soil

     Code :

     	F	G	H	J
     A.	2	3	1	4
     B.	1	3	2	4
     C.	1	4	2	3
     D.	2	4	1	3

1. 1. A.

   
   
   

   2. B.

   
   
   

   3. C.

   
   
   

   4. D.

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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167. What happens to tropical soils when the rainforest is cleared ?

1. 1. The soil improves to the extent that souble nutrients are no longer depleted by the trees

   
   
   

   2. There is little effect on the soil because of its depth of richness

   
   
   

   3. Clearing interrupts the critical nutrient cycle and leads to soil leaching

   
   
   

   4. The soil stabilise and become excellent for grain crops

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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168. Match List (Soil classes) with List - II (Climate types) and select the correct answer using the codes given below the lists
     

     	List - I		List - II
     F.	Padsols	1.	Temperate grasslands
     G.	Terra Rossa	2.	Hot desert
     H.	Chernozems	3.	Cool temperate
     J.	Serozems	4.	Mediterranean

     Code :

     	F	G	H	J
     A.	2	3	1	4
     B.	3	4	1	2
     C.	3	4	2	1
     D.	4	1	3	2

1. 1. A.

   
   
   

   2. B.

   
   
   

   3. C.

   
   
   

   4. D.

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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169. Assertion (A) : Volcanic soils are usually fertile.
     Reason (R) : The heat of eruption causes fertility on such soils.
     Code

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

   
   
   

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

   
   
   

   3. (A) is true but (R) is false
      

   
   
   

   4. (A) is false but (R) is true
      

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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170. Consider the following statements
     1. Availability of cheap alternatives
     2. Changing food habit
     3. Indiscriminate fishing
     4. Overfishing
     5. Water pollution
     Of these statements

1. 1. 1, 2 and 3 are correct

   
   
   

   2. 2, 3 and 4 are correct

   
   
   

   3. 1, 4 and 5 are correct

   
   
   

   4. 3, 4 and 5 are correct

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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