Soil Erosion GK Questions and Answers | Physical Geography MCQs

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1. In which type of soil erosion, the soil matrix is lost but remains undetected for long period?
  1. Gully erosion
  2. Stream bank erosion
  3. Rill erosion
  4. Sheet erosion

Answer: Sheet erosion

2. Sedimentation allows separation of:
  1. Soluble particles
  2. Insoluble particles
  3. Organic compounds
  4. Gaseous molecules

Answer: Insoluble particles

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3. Water erosion can be minimized by:
  1. Removing vegetation cover
  2. Disturbing soil frequently
  3. Cover cropping
  4. Over-irrigation

Answer: Cover cropping

4. Which one of the following is the first stage of water erosion?
  1. Rill erosion
  2. Sheet erosion
  3. Splash erosion
  4. Gully erosion

Answer: Splash erosion

5. Splash erosion is the first stage of water erosion where:
  1. Water flows down the land removing topsoil
  2. Raindrops hit exposed soil and displace soil particles
  3. Deep channels called gullies are formed
  4. Surface runoff detaches and transports soil particles

Answer: Raindrops hit exposed soil and displace soil particles

6. Gully erosion creates deep channels that:
  1. Can be removed through normal tilling
  2. Are 10-15 cm deep
  3. Are less than 30 cm deep
  4. Cannot be removed through normal tilling

Answer: Cannot be removed through normal tilling

7. Gully erosion creates deep channels that:
  1. Can be removed through normal tilling
  2. Are 10-15 cm deep
  3. Are less than 30 cm deep
  4. Cannot be removed through normal tilling

Answer: Cannot be removed through normal tilling

8. Red soils are suitable for which of the following crops?
  1. Rice and wheat
  2. Sugarcane and tea
  3. Cotton and pulses
  4. Jute and coffee

Answer: Cotton and pulses

9. Which stage of water erosion represents Slash erosion?
  1. Second
  2. Fourth
  3. First
  4. Third

Answer: First

10. Which factor does NOT cause weathering and erosion?
  1. Water
  2. Wind
  3. Pressure
  4. Plants

Answer: Pressure

11. Which stage of water erosion represents Slash erosion?
  1. Second
  2. Fourth
  3. First
  4. Third

Answer: First

12. The presence of which clay mineral leads to high phosphorus fixing capacity in red soils?
  1. Kaolinite
  2. Montmorillonite
  3. Vermiculite
  4. All of above

Answer: Kaolinite

13. How is sheet erosion caused?
  1. By surface water runoff
  2. By raindrop splash
  3. By downward cutting of streams
  4. By wind-blowing soil particles

Answer: By surface water runoff

14. How does lack of vegetation cover increase erosion?
  1. Roots bind the soil
  2. Plants reduce wind velocity
  3. Leaves reduce raindrop impact
  4. All of the above

Answer: All of the above

15. In the process of erosion, the removal of materials by solution is called
  1. Corrasion
  2. Attrition
  3. Corrosion
  4. Sapping

Answer: Corrosion

16. Weathering and erosion lead to:
  1. Formation of soil
  2. Build-up of sediments
  3. Joining of rock particles
  4. Cementation of minerals

Answer: Formation of soil

17. Gully erosion is an advance stage of?
  1. Rill erosion
  2. Splash erosion
  3. Sheet erosion
  4. Wind erosion

Answer: Rill erosion

18. Which of the following is NOT an impact of excessive erosion on agricultural productivity?
  1. Loss of organic matter
  2. Exposure of nutrient-rich topsoil
  3. Increased water infiltration in soil
  4. Breakdown of soil structure

Answer: Increased water infiltration in soil

19. Arable land in the irrigated zones of India is becoming saline because of ________.
  1. Over Grazing
  2. Over-Irrigation
  3. Heavy rainfall
  4. Over use of pesticides

Answer: Over-Irrigation

20. Rajasthan faces scarcity of water because it has:
  1. Small cultivable area
  2. Low population density
  3. Limited surface and groundwater availability
  4. Excessive precipitation

Answer: Limited surface and ground water availability

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