1.  The magnitude of wind turbulence is greater at

a

  Ground surface

b

 Rough surface

c

 Smooth surface

d

 None of the above

Answer & Explanation
Answer : Option A

2.  Wind turbulence is greater on

a

  Rough surface

b

 Smooth surface

c

 Undulating surface

d

 None of the above

Answer & Explanation
Answer : Option A

3.  Wind turbulence is increases with increase in

a

  Friction velocity

b

 Velocity

c

 Pressure

d

 Temprature

Answer & Explanation
Answer : Option A

4.  The chief cause of accelerated erosion is:

a

  Overfelling and overgrazing

b

 Excessive rains

c

 Wind storms

d

 All of the above

Answer & Explanation
Answer : Option A

5.  Constant grazing and browsing in an area may ultimately result in the formation of:

a

  Desert

b

 Grassland

c

 Dense forest

d

 Bushy vegetation

Answer & Explanation
Answer : Option A

6.  The ecological equilibrium in mined areas can be achieved by:

a

  Introducing agriculture

b

 Preventing overgrazin

c

 Preventing soil erosion

d

 Developing a vegetational cover

Answer & Explanation
Answer : Option D

7.  When trees and shrubs are planted in long rows along streams, they are described as:

a

  Wind breaks

b

 Shelter belts

c

 Soil binders

d

 Basin blisters

Answer & Explanation
Answer : Option B

8.  Main indicator of soil erosion is:

a

  Ozone layer

b

 Deforestation

c

 Afforestation

d

 Goats and grazing animals

Answer & Explanation
Answer : Option B

9.  The soil binding is done in the best way by:

a

  Algae

b

 Grasses

c

 Mycorrhizae

d

 All of these

Answer & Explanation
Answer : Option B

10.  Which of the following prevents afforestation in deserts:

a

  Low rainfall

b

 Local resident

c

 Unfertility of soil

d

 Goat and grazing animals

Answer & Explanation
Answer : Option A

11.  Terracing is an affective method of soil conservation:

a

  Plains

b

 Hilly areas

c

 Desert areas

d

 Riverine areas

Answer & Explanation
Answer : Option B

12.  Soil conservation is the process where:

a

  Soil is aerated

b

 Soil erosion is allowed

c

 Soil is protected against loss

d

 Sterile soil is converted into fertile soil

Answer & Explanation
Answer : Option C

13.  An important agrostological technique to check soil erosion in the initial stages is:

a

  Contour farming

b

 Land retirement

c

 Basin listing

d

 Ley farming

Answer & Explanation
Answer : Option D

14.  The fertility level of any soil is generally determined by:

a

  Aeration and hydration

b

 Humus and mineral contents

c

 Humus, mineral and hydration level

d

 All of these

Answer & Explanation
Answer : Option D

15.  The cutting of trees from the forests of hill near a catchment area:

a

  Will have no effect on causing floods in plain

b

 May cause flood in plains in rainy season

c

 Will benefit the mankind for more area for cultivation

d

 Will have no effect on climatic condition of that area

Answer & Explanation
Answer : Option B

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