agriculture MCQs – Page 209

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

4161. A river before its joins the sea, gets divided into small channels, thus forming a Triangular shape called __________________?
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A. Degrading river

B. Stable river

C. Unstable river

D. Deltaic river
4162. The rise in river water level at up stream due to construction of weir is called__________________?
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A. HFL

B. Pond level

C. Afflux

D. FSL

4163. The ratio of change of discharge of an outlet to the rate of change in level of water surface in distributary at its normal depth is called ____________________?
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A. Flexibility

B. Flow ability

C. Durability

D. Sensitivity
4164. Water logging is the state of the soil where the water table brought ______________capacity or root zone of plants?
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A. Below

B. Within

C. Near

D. Far from

4165. A curve consisting two or more arcs of different radii curving in the same direction with common tangent is called ___________________?
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A. All are correct

B. Double curve

C. Composite curve

D. Compound curve
4166. The sheet or small layer of water flowing over an ogee spillway is called _________________?
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A. Water sheet

B. Thin layer

C. Water spillway

D. Nappe
4167. The water evaporates from paddy surfaces to the atmosphere in the form of water vapours, these water vapours get collected in the atmosphere and behave & like_________________?
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A. Gas

B. Ice particles

C. Water

D. Snow

4168. The run-off from catchment areas, Roads, buildings and other fallow lands is called ____________________?
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A. Dry weather flow

B. Rain water

C. Storm water

D. Surface run-off

4169. The wall of masonry or concrete, constructed at 90 to the axis of weir to separate normal weir from under sluices is called____________________?
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A. Retaining wall

B. Toe wall

C. All are correct

D. Divide wall
4170. A flow in which the stream lines may be represented by a straight line is called____________________?
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A. one-dimension flow

B. Non-uniform flow

C. un-steady flow

D. steady flow

4171. Khosla provided a seepage theory for design of Hydraulic structures called________________?
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A. Theory of seepage

B. Method of cutoffs

C. Creep theory

D. Method of independent variables
4172. The field capacity is the water retained by a saturated soil after free drainage of surplus water to the ground water table but the water retained by a saturated soil after being centrifuged by a centrifugal force of 1000 times that of gravity is called________________?
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A. Available moisture

B. Field moisture

C. Soil moisture

D. Equivalent moisture
4173. To protect the face of embankment against the attack of wave wash with stone boulders is called _________________?
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A. Armouring

B. Revetment

C. Pitching

D. All are correct

4174. A series of vertical steps in a stream made to avoid soil scouring is called ___________________?
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A. Embankment

B. Banks

C. Cascades

D. Levees

4175. Direct runoff is the sum of __________________?
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A. Surface run off and flow

B. Sub-surface run off and deep percolation

C. Surface run-off and mass flow

D. Bass flow and ground water run off

4176. The mercury in a glass tube assumes convex shape at the top because of_________________________?
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A. Adhesion

B. Surface Tension

C. Viscosity

D. Cohesion

4177. Water logging caused by ____________ water, which during excessive irrigation percolates down and join under ground water table?
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A. Hygroscopic

B. Capillary

C. Gravity

D. Free

4178. A water rise takes place on down stream of sloping glacis, when a stream of water moving with high velocity and low depth strikes another stream of flow moving with low velocity and high depth, such breakage in water surface is called______________?
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A. Water tide

B. Hydraulic jump

C. Afflux

D. Water wave

4179. The free distance on the paddy surface which a wind can travel to any point to rise waves is called_________________?
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A. Wave wash

B. Tide

C. Wave amplitude

D. Fetch
4180. The groyne pointing downwards in the direction of flow in fiver is called________________?
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A. Attracting

B. repelling

C. Permeable

D. Impermeable