Water Resources Engineering (Practice Test MCQs)

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1. The main objective of water resources engineering is:
(A) Road construction
(B) Water conservation, distribution, and management
(C) Soil testing
(D) Building design

2. The hydrologic cycle involves:
(A) Only precipitation
(B) Only evaporation
(C) Precipitation, evaporation, infiltration, and runoff
(D) Groundwater pumping only

3. The unit of rainfall measurement is:
(A) Cubic meter
(B) Millimeter
(C) Liter
(D) Meter cube per second

4. The main purpose of a dam is:
(A) Transportation
(B) Flood control, water storage, and power generation
(C) Soil stabilization only
(D) Air circulation

5. The term “catchment area” refers to:
(A) Area where fish are caught
(B) Area draining into a river or reservoir
(C) Forest land
(D) Agricultural field

6. The main purpose of a spillway in a dam is:
(A) Water storage
(B) Flood discharge
(C) Sediment collection
(D) Irrigation canal intake

7. The unit of discharge is:
(A) m²/s
(B) m/s
(C) m³/s
(D) N/m²

8. The main advantage of canal irrigation is:
(A) Low water loss
(B) Reduced soil fertility
(C) High initial cost
(D) Controlled water supply to fields

9. Which is an example of a diversion headwork?
(A) Dam
(B) Weir
(C) Sluice gate
(D) Barrage

10. The duty of water refers to:
(A) Depth of water applied
(B) Area irrigated per unit discharge
(C) Water loss in canal
(D) Flow velocity in river

11. Delta in irrigation refers to:
(A) River mouth
(B) Depth of water required by a crop
(C) Area between two rivers
(D) Silt load

12. The best type of dam for narrow gorges is:
(A) Earth dam
(B) Gravity dam
(C) Arch dam
(D) Rockfill dam

13. The main purpose of sluice gates in dams is:
(A) To control water flow and release sediments
(B) To measure rainfall
(C) To store groundwater
(D) To aerate water

14. The term “hydrograph” represents:
(A) Rainfall intensity vs. time
(B) Discharge vs. time
(C) Evaporation rate vs. time
(D) Groundwater table vs. depth

15. The main advantage of underground water storage is:
(A) High evaporation loss
(B) Low cost and less pollution risk
(C) Difficulty in extraction
(D) Only seasonal use

16. The process of artificially replenishing groundwater is called:
(A) Evaporation
(B) Recharge
(C) Percolation
(D) Infiltration

17. The optimum moisture content for crop growth is called:
(A) Wilting point
(B) Field capacity
(C) Saturation point
(D) Residual water content

18. A gravity dam resists the external forces mainly by:
(A) Flexural strength
(B) Shear force
(C) Its own weight
(D) Tension

19. The main purpose of a stilling basin is:
(A) Storing sediment
(B) Dissipating energy of flowing water
(C) Diverting canal flow
(D) Increasing water level

20. The most suitable soil for earthen dams is:
(A) Coarse sand
(B) Gravel
(C) Clayey soil
(D) Rock

21. Flood routing is used to:
(A) Measure rainfall
(B) Predict flood hydrograph
(C) Increase evaporation
(D) Measure groundwater table

22. The storage capacity between minimum pool level and full reservoir level is called:
(A) Dead storage
(B) Live storage
(C) Surcharge storage
(D) Dead load storage

23. The term “freeboard” in a dam refers to:
(A) Width of spillway
(B) Difference between dam crest and maximum water level
(C) Canal cross-section
(D) River bed level

24. The type of canal used to connect two reservoirs is called:
(A) Main canal
(B) Branch canal
(C) Link canal
(D) Distributary

25. The best method of irrigation for water-saving is:
(A) Flood irrigation
(B) Furrow irrigation
(C) Sprinkler irrigation
(D) Drip irrigation

26. The unit of permeability is:
(A) m³/s
(B) m/s
(C) m²/s²
(D) m²

27. The process of removal of silt from canals is called:
(A) Scouring
(B) Desilting
(C) Settling
(D) Flushing

28. The main purpose of a barrage is:
(A) Power generation
(B) Navigation and irrigation control
(C) Fish farming
(D) River diversion only

29. The depth of water required to mature a crop is known as:
(A) Base period
(B) Crop water requirement
(C) Duty
(D) Delta

30. The formula for runoff estimation in hydrology is often based on:
(A) Darcy’s law
(B) Rational method
(C) Reynolds number
(D) Manning’s formula

31. The main purpose of canal lining is:
(A) Increase seepage
(B) Reduce water loss and increase flow efficiency
(C) Reduce cost
(D) Increase soil fertility

32. The term “command area” in irrigation means:
(A) Total catchment area
(B) Area irrigated by a canal system
(C) Reservoir area
(D) River basin area

33. The main force acting on a gravity dam is:
(A) Earthquake only
(B) Hydrostatic pressure
(C) Wind load
(D) Traffic load

34. The most suitable type of spillway for earthen dams is:
(A) Chute spillway
(B) Shaft spillway
(C) Side channel spillway
(D) Ogee spillway

35. The term “hydraulic jump” occurs when:
(A) Flow changes from high to low velocity
(B) Flow becomes laminar
(C) Canal lining is removed
(D) Sediment settles

36. The main cause of waterlogging is:
(A) Excessive irrigation
(B) Less rainfall
(C) High temperature
(D) Sandy soil

37. A cross drainage work is constructed to:
(A) Store water
(B) Allow canal and natural drainage to cross each other
(C) Measure discharge
(D) Stop sediment

38. The term “base period” in irrigation refers to:
(A) Period between sowing and harvesting of a crop
(B) Rainy season period
(C) Irrigation-free period
(D) River flow season

39. A check dam is constructed mainly to:
(A) Increase flood level
(B) Store sediment
(C) Reduce water velocity and prevent erosion
(D) Divert canals

40. The type of irrigation which uses perforated pipes is:
(A) Furrow irrigation
(B) Drip irrigation
(C) Sprinkler irrigation
(D) Subsurface irrigation

41. The term “silt factor” is used in:
(A) Khosla’s theory
(B) Lacey’s theory
(C) Darcy’s law
(D) Chezy’s formula

42. Which of the following is a non-perennial river?
(A) Indus
(B) Ganga
(C) Sutlej
(D) Jhelum

43. The main purpose of a guide bank in a river is:
(A) Increase discharge
(B) Control river flow and prevent bank erosion
(C) Measure velocity
(D) Store sediment

44. The process of converting saline water into freshwater is called:
(A) Filtration
(B) Desalination
(C) Coagulation
(D) Aeration

45. Which is the most suitable method for irrigation of fruit orchards?
(A) Flood irrigation
(B) Sprinkler irrigation
(C) Drip irrigation
(D) Furrow irrigation

46. The main source of groundwater recharge is:
(A) River flow
(B) Rainfall infiltration
(C) Canal lining
(D) Evaporation

47. The water that drains quickly and is unavailable to plants is called:
(A) Capillary water
(B) Hygroscopic water
(C) Gravitational water
(D) Bound water

48. The major function of a head regulator is:
(A) Store water
(B) Control silt entry into canals
(C) Divert river
(D) Increase seepage

49. The main advantage of tube wells over open wells is:
(A) High evaporation
(B) Large area requirement
(C) Greater discharge and efficiency
(D) Low depth

50. Which is the most important parameter for designing a hydropower plant?
(A) Rainfall only
(B) Water head and flow rate
(C) Soil fertility
(D) Canal width

Water Resources Engineering (Practice Test MCQs)

1. Basic/Foundation Subjects

2. Core Civil Engineering Subjects

3. Advanced/Applied Subjects

4. Management and Planning

5. Environmental & Sustainable Development