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water management MCQs

Practise focused water management questions with marked answers for exam preparation and subject revision.

water management Mcqs
1. Which of the following is a cash crop ___________________?
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A. Paddy

B. Cotton

C. Wheat

D. Maize

2. Surface tension is the property of a liquid which enables it to resist tensile stress. the surface tension of water is equal to ______________ Kg/m?
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A. 0.006

B. 0.0075

C. 0.0056

D. 0.0065

3. The total energy line lies over the hydraulic gradient line by an amount equal to________________?
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A. v/2g

B. v2/g

C. v2/2g

D. v/g

4. The contour of equal water heads and pressure in the soil mass beneath retaining structure are called___________________?
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A. Equipotential lines

B. Streak lines

C. Stream lines

D. Equilibrium lines

5. The steep conduits made in the body of dam for running turbines to generate hydro-electric power are called__________________?
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A. Penstocks

B. Tunnels

C. Chuttes

D. Weep holes

6. Specific weight of a liquid is defined as the weight per unit volume at standard Temperature & pressure therefore specific weight of water of water is equal to ____________ kg/m3 in MKS system ?
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A. 999

B. 1000

C. 995

D. 990

7. The delta the total depth of water consumed by a crop from 1st watering when matures, the delta for rice is___________________?
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A. 75cm

B. 120cm

C. 100cm

D. 80cm

8. The fixing of points in such away or the ground to have a correct lines for setting a canal or water course is called _________________?
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A. Designing of canal

B. Alignment of canal

C. Lining of canal

D. All are correct

9. A line shown on a contour map, set out on ground between certain constant points of slope is called___________________?
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A. Contour line

B. Counter interval

C. Contour gradient

D. Gradient

10. An aquifer in which water contained under high pressure as the aquifer is sand witched between two impervious layer is called___________________?
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A. Confined aquifer

B. All are correct

C. No-Artesian aquifer

D. Un-confined aquifer

11. The ideal crop for wastewater or sewage irrigation is _______________________?
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A. Dates

B. Mango

C. Banana

D. Orange

12. A flow of water for a certain discharge when total energy of flow i.e. sum of potential, kinetic and pressure energies is minimum is called_______________________?
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A. Normal flow

B. Sub-critical flow

C. Critical flow

D. Shooting flow

13. Piezometer tube is open to both ends mostly used to measure ____________________?
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A. absolute pressure

B. Vacuum pressure

C. Atmospheric pressure

D. gauge pressure
14. Volume of water that unit volume of aquifer will give up by gravity pull is called ____________________?
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A. Specific volume

B. All are correct

C. Specific yield

D. Specific retention

15. A type of flow in which water particles, while moving in the direction of flow, rotate about their mass centre is called _________________?
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A. Turbulent flow

B. Laminar flow

C. Circular flow

D. Rotational flow
16. The process of consolidation of stabilized earth work in canal or river embankments. In this process the soil is deposited in layers of specified thickness and at a particular moisture content is called __________________?
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A. Soil stabilization

B. Densification

C. All are correct

D. Compaction

17. The permissible limit of hardness of water fore low pressure boiler is _____________________?
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A. 60 mg/litre

B. 50 mg/litre

C. 40 mg/litre

D. 30 mg/litre

18. The angle between a head regulator and entrance of water, for smooth entry of water in a canal is kept as _________________?
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A. 100

B. 120

C. 110

D. 90

19. __________% of total global water is saline and available in oceans ?
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A. 97.5%

B. 96%

C. 95%

D. 97%

20. The forces coming over the gravity dam is mainly resisted by ___________________?
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A. Water pressure

B. Uplift pressure

C. Self weight of the dam

D. All the above

21. A closed conduct or barrel used used for supplying water under high pressure to a turbine to generate electricity is called __________________?
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A. Syphon

B. Chute

C. Penstock

D. A tunnel

22. Permissible velocity of water flowing through concrete lined tunnel is usually __________________?
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A. 3 4m/sec

B. 5 6m/sec

C. 4 5m/sec

D. 6 7m/sec

23. When reservoir is full on upstream side, the maximum stress comes upon__________________?
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A. Bottom of dam

B. All are correct

C. Face of dam

D. Top of dam

24. in most economical Trapezoidal section, half of the Top width is equal to _________________?
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A. Bottom width of channel

B. Depth of channel

C. None of these

D. Sloping side of channel
25. The law which states that the intensity of pressure at any point in a liquid at rest is same in all directions_________________?
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A. Archimeds law

B. Pascals law

C. None

D. Darcys law

26. A channel artificially constructed for water conveyance of appreciable quantities with no problem of silting and scouring is called ____________________?
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A. Alluvial canal

B. A and B are correct

C. A regime canal

D. Stable canal

27. The resultant pressure of water on the face of dam is equal to ____________________ ?
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A. 1/2 WH

B. 1/2 WH2

C. All are correct

D. WH

28. A dam which the up lift pressure of the sub-soil water by its own weight is called _________________?
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A. Concrete dam

B. Buttress dam

C. Gravity dam

D. Arch dam

29. A pipe flowing full, the liquid particles in the pipe has maximum velocity at __________________?
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A. Centre of pipe

B. Top of pipe

C. Bottom of pipe

D. All are correct

30. The formula used to calculate maximum flood discharge for a hilly () is_______________?
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A. Ryves formula

B. Nawab Jung Bahadur All formula

C. Dickens formula

D. Inglis formula

31. Tanda dam is constructed on river ___________________?
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A. Kabul

B. Haro

C. Kohat

D. Hub

32. The hydraulic gradient line (H.G.L)represents the sum of_________________?
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A. Water surface

B. Pressure head + datum head

C. Velocity head

D. Pressure head + velocity head

33. In study of a granular material sliding on plane ground, the angle between the perpendicular and the surface in static condition is called ___________________?
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A. Angle of repose

B. Angle of friction

C. All are correct

D. Angle of internal friction

34. A dam which is prevented from overturning by the action of lateral or vertical up thrust of water by its weight is called __________________?
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A. Gravity dam

B. Arch dam

C. Coffer dam

D. Buttress dam

35. Flow in which each liquid particle has a definite path is called _____________________?
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A. uniform flow

B. Steady flow

C. Transitional flow

D. Laminar flow
36. The precipitation that occurs because of frontal disturbances during the movement of barometric low pressure is called ____________________?
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A. Hurricane

B. Cyclonic

C. Convective

D. Orographic

37. Art of making saline un-cultivable lands capable of re-cultivation is called.___________________?
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A. Fertilization

B. Reclamation

C. Growing crops

D. Water application

38. An earth embankment built on one or both sides of a river, some distance away from its banks to control flood is called _______________?
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A. Flood protective bund

B. Dyke

C. Marginal embankment

D. Embankment

39. Sterilization is the process of killing ___________ of water borne diseases, so as to make it safe for hospital use?
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A. Fungi bacteria i

B. Pathogenic bacteria

C. Algai bacteria

D. Insects

40. The dam built for the purpose of diverting water from main stream to various courses of flow is called ____________________?
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A. Gravity dam

B. Coffer dam

C. Detention dam

D. Diversion dam
41. Water available in root zone of plants, is about 50% of soil moisture content. which is always available to the plants is called________________?
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A. Capillary water

B. Effective water

C. Soil-moisture content

D. All are correct

42. Sediment particles smaller than 0.002 mm which do not settle in water are called____________________?
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A. Fine silt particles

B. Colloids

C. Fine clay particles

D. All are correct

43. The weight per unit of liquid at standard Temperature and pressure is called___________________?
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A. Specific weight

B. Capillary rise is significant

C. Mass density

D. Mass weight

44. Art of growing crops, management of live stocks, husbandry and farming is called________________?
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A. all are correct

B. Water management

C. Agriculture

D. crop farming

45. Always flow inside the ground is ____________________?
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A. Compressible

B. Rotational

C. Turbulent

D. Laminar
46. When the reservoir is full, the maximum compressive force in a gravity dam is produced ___________________?
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A. Within the middle third of base

B. At the heel

C. At centre of base

D. At the toe
47. Water application efficiency increases if the plot to be irrigated is__________________?
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A. Circular

B. Rectangle

C. Square

D. All are correct

48. Water available above the top of root zone of plants is about 15% of soil moisture contents, is mostly not available to plants celled_________________?
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A. Hygroscopic water

B. Effective water

C. Capillary water

D. Irrigation water

49. Readily available moisture is the % of moisture that is always easily available to plant and this moisture is called _________________?
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A. 75%

B. 70%

C. 80%

D. 85%

50. Specific gravity of a liquid is defined as the ratio of its specific weight to that of pure water and standard temperature and pressure. Therefore specific gravity is equal to ___________________?
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A. 2

B. 1.0

C. 1.2

D. 1.5