Flood Control & Soil Conservation MCQs for APSC PWD & WRD JE 2025: 2

Flood Control & Soil Conservation MCQs for APSC JE 2025

Topics Covered

• Flood Control Measures
• Flood Management Techniques
• Soil Erosion Control
• Soil Conservation Practices
• Watershed Management

Topic: Flood Control Measures

1. What is the purpose of a revetment in flood control?

a) Store water for irrigation b) Protect riverbanks from erosion c) Generate hydropower d) Increase river flow

Answer: b) Protect riverbanks from erosion
Revetments are protective layers of stone or concrete along riverbanks.

Topic: Flood Control Measures

2. What is the function of a weir in flood management?

a) Permanent water storage b) Control water flow and reduce flooding c) Divert water to farmland d) Measure rainfall

Answer: b) Control water flow and reduce flooding
Weirs regulate river8 water levels to prevent overflow.

Topic: Flood Control Measures

3. What is a flood barrier used for?

a) Generate electricity b) Temporarily block floodwater c) Store groundwater d) Improve soil fertility

Answer: b) Temporarily block floodwater
Flood barriers are deployed during flood events to protect infrastructure.

Topic: Flood Control Measures

4. What is the role of a sluice gate?

a) Increase soil erosion b) Regulate water flow in canals c) Store floodwater permanently d) Reduce vegetation

Answer: b) Regulate water flow in canals
Sluice gates control water release to manage flooding.

Topic: Flood Control Measures

5. What is a bypass channel?

a) A drainage system for groundwater b) A route to divert floodwater c) A reservoir for irrigation d) A barrier to stop erosion

Answer: b) A route to divert floodwater
Bypass channels redirect excess water to reduce flood risk.

Topic: Flood Control Measures

6. What is the purpose of a wing wall?

a) Generate power b) Guide water flow at structures c) Store rainwater d) Increase runoff

Answer: b) Guide water flow at structures
Wing walls stabilize and direct water at bridges or culverts.

Topic: Flood Management Techniques

7. What is the purpose of flood risk mapping?

a) Store water for irrigation b) Identify flood-prone areas c) Measure soil erosion d) Divert river flow

Answer: b) Identify flood-prone areas
It helps in planning and mitigation strategies.

Topic: Flood Management Techniques

8. What does a unit hydrograph represent?

a) Soil erosion rate b) Runoff from a rainfall event c) Groundwater recharge d) Irrigation demand

Answer: b) Runoff from a rainfall event
It models watershed response to rainfall.

Topic: Flood Management Techniques

9. What is the benefit of flood insurance?

a) Prevents floods b) Provides financial recovery post-flood c) Reduces soil erosion d) Increases water storage

Answer: b) Provides financial recovery post-flood
It mitigates economic losses for property owners.

Topic: Flood Management Techniques

10. What is the purpose of a flood warning system?

a) Store floodwater b) Alert communities about flood risks c) Divert water to canals d) Measure rainfall intensity

Answer: b) Alert communities about flood risks
It enables timely evacuation and preparation.

Topic: Flood Management Techniques

11. What is green infrastructure in flood management?

a) Concrete flood walls b) Natural systems like wetlands c) Steel gates d) Dams for storage

Answer: b) Natural systems like wetlands
It uses nature to absorb and manage floodwater.

Topic: Flood Management Techniques

12. What is the role of hydrologic modeling?

a) Increase erosion b) Predict flood behavior c) Store groundwater d) Remove vegetation

Answer: b) Predict flood behavior
It simulates water flow for planning purposes.

Topic: Soil Erosion Control

13. What is the purpose of a coir mat?

a) Increase runoff b) Stabilize soil on slopes c) Store water d) Remove nutrients

Answer: b) Stabilize soil on slopes
Coir mats prevent soil loss until vegetation grows.

Topic: Soil Erosion Control

14. What is sheet erosion?

a) Deep channels in soil b) Uniform soil loss by water c) Wind-driven erosion d) Erosion by plowing

Answer: b) Uniform soil loss by water
It removes thin layers of topsoil across a surface.

Topic: Soil Erosion Control

15. What is the function of a brush mattress?

a) Increase water flow b) Protect riverbanks with branches c) Store groundwater d) Remove vegetation

Answer: b) Protect riverbanks with branches
It uses live cuttings to stabilize soil.

Topic: Soil Erosion Control

16. What is the role of geotextiles?

a) Increase soil fertility b) Prevent soil movement c) Divert floodwater d) Store rainwater

Answer: b) Prevent soil movement
Geotextiles reinforce soil and reduce erosion.

Topic: Soil Erosion Control

17. What is rill erosion?

a) Large gullies in soil b) Small channels by runoff c) Wind-driven soil loss d) Uniform soil removal

Answer: b) Small channels by runoff
Rills are shallow channels formed by concentrated water flow.

Topic: Soil Erosion Control

18. What is the purpose of a drop inlet?

a) Store water permanently b) Control runoff into drains c) Increase soil erosion d) Divert river water

Answer: b) Control runoff into drains
It prevents erosion around drainage systems.

Topic: Soil Conservation Practices

19. What is the benefit of intercropping?

a) Increases erosion b) Reduces soil exposure c) Depletes nutrients d) Increases runoff

Answer: b) Reduces soil exposure
It keeps soil covered, minimizing erosion.

Topic: Soil Conservation Practices

20. What is contour bunding?

a) Deep plowing b) Earthen ridges along contours c) Removing vegetation d) Adding fertilizers

Answer: b) Earthen ridges along contours
It slows water flow to reduce erosion.

Topic: Soil Conservation Practices

21. What is the purpose of alley cropping?

a) Increase runoff b) Grow crops between tree rows c) Remove soil nutrients d) Store floodwater

Answer: b) Grow crops between tree rows
It stabilizes soil and improves fertility.

Topic: Soil Conservation Practices

22. What is the advantage of reduced tillage?

a) Increases erosion b) Maintains soil structure c) Removes organic matter d) Increases runoff

Answer: b) Maintains soil structure
It minimizes soil disturbance and erosion.

Topic: Soil Conservation Practices

23. What is the role of compost in soil conservation?

a) Increases erosion b) Improves soil health c) Reduces water retention d) Removes nutrients

Answer: b) Improves soil health
Compost adds organic matter, reducing erosion.

Topic: Soil Conservation Practices

24. What is the purpose of ridge planting?

a) Increase runoff b) Reduce water pooling c) Remove vegetation d) Deplete soil

Answer: b) Reduce water pooling
It improves drainage and reduces erosion.

Topic: Watershed Management

25. What is the purpose of a percolation pit?

a) Increase erosion b) Recharge groundwater c) Store floodwater d) Divert rivers

Answer: b) Recharge groundwater
It allows water to infiltrate soil slowly.

Topic: Watershed Management

26. What is integrated watershed management?

a) Diverting rivers b) Holistic resource management c) Measuring rainfall d) Storing floodwater

Answer: b) Holistic resource management
It balances land, water, and community needs.

Topic: Watershed Management

27. What is the role of contour trenches?

a) Increase flood risk b) Slow runoff and trap water c) Deplete groundwater d) Enhance erosion

Answer: b) Slow runoff and trap water
They reduce erosion and recharge soil.

Topic: Watershed Management

28. What is the benefit of wetland restoration?

a) Increases runoff b) Stores floodwater naturally c) Reduces soil fertility d) Diverts rivers

Answer: b) Stores floodwater naturally
Wetlands act as natural sponges for water.

Topic: Watershed Management

29. What is a recharge well used for?

a) Increase erosion b) Direct water to aquifers c) Store surface water d) Remove vegetation

Answer: b) Direct water to aquifers
It enhances groundwater levels.

Topic: Watershed Management

30. What is the purpose of a farm pond?

a) Increase flood risk b) Collect runoff for irrigation c) Deplete groundwater d) Enhance erosion

Answer: b) Collect runoff for irrigation
It conserves water and reduces runoff.