water management MCQs – Page 8

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

water management Mcqs
141. A mine or tunnel for collecting seepage water in rock or dam is called ____________________?
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A. Water tunnel

B. Seepage tunnel

C. Seepage Drain

D. Seepage gallery
142. Bouyant force is equal to the ___________ of liquid displaced by the body in water mass?
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A. Specific weight

B. Volume

C. Weight

D. Specific gravity

143. When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called_____________________?
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A. Syphon Aqueduct

B. Canal-syphon

C. Super-passage

D. Syphon

144. When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called __________________?
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A. Non-flexible

B. Flexible

C. Proportional

D. Sensitive

145. The maximum rate at which the soil in given condition can absorb water is called ___________________?
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A. Field Capacity

B. Infiltration capacity

C. Capillarity

D. All are correct

146. A structure provided when a large canal a big drainage channel approach other practically at the same level is called__________________?
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A. Level crossing

B. Canal crossing

C. Drainage crossing

D. Super passage

147. According to Chezys formula, the discharge through an open channel is equal to _________________?
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A. Ac?R.S

B. A (c.A/pi) <sup>1/2 </sup>

C. C (mi) <sup>1/2 </sup>

D. A (cmi)<sup>1/2 </sup>

148. Total energy line (T.E.L) represents the sum of ________________________?
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A. Velocity head + potential head + datum head

B. Pressure head + kinetic head and datum head

C. Velocity head + kinetic head + datum head

D. The energy head + potential head + datum head

149. A line shown on a map, drawn between the points of equal levels or heads is called ____________________?
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A. Contour line

B. Check line

C. All are correct

D. Ordinate line

150. The field capacity is the amount of water retained by a saturated soil mass after being acted by gravity. The amount of water required to bring the soil moisture content of that soil up to field capacity is called__________________?
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A. a and b are correct

B. Field-moisture deficiency

C. Soil-moisture deficiency

D. Equivalent-moisture deficiency

151. The difference between saturation vapour pressure and actual vapour pressure at a constant temperature is called ___________________?
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A. Saturation vapour pressure

B. Partial pressure

C. Actual vapour pressure

D. Saturation deficit
152. The discharge of a well per unit draw down usually expressed as gallons or liters per minute is called ____________________?
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A. Discharge

B. All are correct

C. Specific capacity

D. Specific volume

153. The property of soil which indicates the volume of water stored in the formation is called ___________________?
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A. Specific yield

B. Porosity

C. Field capacity

D. Specific retention

154. The lower limit of factor of safety against over turning in a gravity is _______________________?
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A. 1.3

B. 1.5

C. 1.4

D. 1.6

155. It is important to keep the saturation gradient line within the body of a embankment of canal, the saturation gradient line in loomy soils lie at___________________?
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A. 1:2 to 1:4

B. 1:3 to 1:5

C. 1:4 to 1:6

D. 1:5 to 1:7

156. A regulator is water controlling structure, it is provided at the head of canal to supply water from parent canal to the branch channel is called_______________________?
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A. All are correct

B. Escape

C. Cross-Regulator

D. Head Regulator
157. The soil which are formed due to the weathering effects particularly by movement of water and are high permeable are called _________________?
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A. Alluvial soils

B. Non-alluvial soils

C. Semi-impervious soils

D. Impervious soils

158. Estimated quantity of global water is __________which covers about 70% of earth?
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A. 1.33x109km3

B. 1.35x109km3

C. 1.32x109km3

D. 1.30x109km3

159. A structure made near weirs and barrages to facilitate the migration of fish up stream or down stream is called __________________?
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A. Fish pond

B. Fish pool

C. Fish ladder

D. Fish escape

160. In the initial stage of rainfall, when soil moisture available in the root zone is very low, the rate of infiltration ?
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A. Normal

B. Increases

C. Reduces

D. remain stagnant