26. Consider the following statements
    1. Weathering encompasses a group of processes by which surface and subsurface rocks disintegrate.
    2. Extreme dryness reduces most weathering to a minimum.
    3. Physical weathering dominates in drier and cooler climates.
    In equatorial rain-forest climate, most rocks weather slowly.
    Which of these are correct ?

1. 1. 1, 2 and 3

   
   
   

   2. 1 and 4

   
   
   

   3. 2, 3 and 4

   
   
   

   4. 1, 2, 3 and 4

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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27. Match List - I (Composition) with List - II (Rock type) and select the correct answer using the codes given below the lists :
    

    	List - I		List - II
    F.	Quartz and feldspar	1.	Basalt
    G.	Quartz, feldspar and mica	2.	Tuff
    H.	Compacted volcanic ash	3.	Granite
    J.	Feldspar, mica, pyroxenes and olivine	4.	Sandstone

    Code :

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

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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28. Consider the following land form characteristics
    1. Stream divides are sharp and ridge like resulting in a minimum of inter stream uplands.
    2. Extensive areas are at of near the base level of erosion.
    3. There are a few consequent trunk streams but few large tributaries. Numerous short tributaries and gullies are extending themselves by head ward erosion and developing valley systems.
    Which one of the following is the orderly sequence of landform characteristics given above in an idealized Fluvial Cycle ?

1. 1. 1,3,2

   
   
   

   2. 2,3,1

   
   
   

   3. 3,1,2

   
   
   

   4. 2,1,3

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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29. Assertion (A) : Graben is a major relief feature resulting form the faulting activities. It is, in fact, a valley or narrow trough bounded by one more parallel faults.
    Reason (R) : Block of the earth's crust may be relatively raised or lowered between more or less parallel faults. The lower part known as graben is formed due to the subsidence of middle part between two normal faults.
    
    

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

   
   
   

   2. Both (A) and (R) are individually true but (R) is not a 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: A

   NA

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30. In which of the following ways can soil erosion will be conserned ?
    I . Contour plouging
    II . Terracing
    III . Shifting cultivation
    IV . Croproation

1. 1. I and II

   
   
   

   2. I, II and III

   
   
   

   3. II and IV

   
   
   

   4. III, II and IV

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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