agriculture MCQs – Page 33

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 Review each marked answer and report any item that may be outdated or unclear.

641. The minimum moisture content at which a water drop if placed on a smooth surface of soil will not be absorbed immediately by the soil is called __________________?
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A. Soil moisture content

B. Moisture content

C. Soil saturation

D. All are correct

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

B. Laminar flow

C. Transitional flow

D. uniform flow

643. Photogenic organ are present in____________________?
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A. Flies

B. Honey bee

C. Fire flies

D. Wasps

644. Presently percentage of area irrigation to that of total cultivated area in our country is __________________?
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A. 60%

B. 27%

C. 40%

D. 80%

645. 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. Soil-moisture deficiency

B. Equivalent-moisture deficiency

C. a and b are correct

D. Field-moisture deficiency

646. 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. Compound curve

C. Double curve

D. Composite curve

647. The _________ analysis of earth dam foundation against shear must be carried out when the foundation is kept on fine loose cohesion less material?
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A. Overturning

B. Failure

C. Suitability

D. Stability
648. A well penetrated in ground water confined between impervious layer at its top and bottom is called __________________?
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A. Artesian well

B. Un-confined

C. Non-artesian

D. Perched

649. The maximum rate at which the soil in given condition can absorb water is called ___________________?
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A. All are correct

B. Infiltration capacity

C. Field Capacity

D. Capillarity

650. When the fluid properties do not change with time, it is a ___________ flow?
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A. Unsteady

B. Steady

C. Non-Uniform

D. Uniform

651. According to Blight, the percolating water seeps along the lower contour of the hydraulic structure, the length traversed by this water is called ______________________?
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A. Piping

B. Undermining

C. Seeping length

D. Creep length
652. Mean velocity of flow in a river can be directly measured by means of ______________________?
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A. Surface floats

B. Rod floats

C. Dicknes formula

D. Current meter

653. when ever a sloping face of river bank is protected by stone pitching against scour, the pitching is extended beyond the toe to the river side that is called__________________?
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A. Guide bank

B. Launching apron

C. Protective wall

D. Toe wall

654. Certification is not required for________________?
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A. Nucleus seed

B. Breeder seed

C. Certified seed

D. Foundation seed

655. The mercury in a glass tube assumes convex shape at the top because of_________________________?
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A. Surface Tension

B. Viscosity

C. Cohesion

D. Adhesion

656. The various works constructed on river side to control the flow and pass it safely from hydraulic structures are called ___________________?
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A. Marginal Embankment

B. River Training works

C. River controlling works

D. Guide Banks

657. Cotton plant has a mode of germination______________?
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A. Hypogeal germination

B. Epigeal germination

C. Both of the above

D. non of these

658. Art of mixing saline water with fresh water in accordance with some ratio for irrigation purpose is called _________________?
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A. Desalinization

B. Mixing of water

C. Amalgamation

D. All are correct

659. Canals normally excavated directly from river without head regulator is called___________________?
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A. Inundation canals

B. Perennial canals

C. Water shed canals

D. Non-perennial canals

660. The line in a flow net which shows the direction of flow of water through a soil mass beneath dam are called _________________?
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A. Streak lines

B. Equipotential lines

C. flow lines

D. Section lines