agriculture MCQs – Page 205

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 Review each marked answer and report any item that may be outdated or unclear.

4081. A reference point on the ground of accurately known position which is a () point of leveling is called ________________?
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A. Control point

B. Reference point

C. Check point

D. Fixed point

4082. A unit hydrograph is a hydrograph of runoff produced by a rainstorm of a specified duration called ____________________?
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A. Storm runoff

B. Unit duration

C. Base flow

D. Peak runoff

4083. A fixed reference point from which the discharge of flowing water is measured is________________?
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A. Bench mark

B. Reduce level

C. Reference point

D. Contour point

4084. The loss of head due to friction according to Darcys formula is _____________________?
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A. 4fLv2/gd

B. 4fLv/gd

C. 4fLv/2gd

D. 4fLv2/2gd
4085. Pilot tube is a device, which convert velocity head of flowing water into pressure by ____________________?
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A. H = v2/2g

B. H = v2 / g

C. H = v2 / g2

D. H = v/g

4086. Art of making saline water fit for irrigation and drinking through the processes of membrane technique and reverse osmosis is called ___________________?
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A. Water mixing

B. All are correct

C. Water application

D. Desalinization
4087. For a flood control reservoirs, the effective storage is equal to ___________________?
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A. Useful storage + surcharge storage

B. Useful storage + surcharge storage

C. Useful storage + surcharge storage -valley storage

D. Useful storage valley storage

4088. The water force per meter length on a vertical wall is equal to_________________?
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A. wh2

B. WH2 2

C. W.H/2

D. w H

4089. A cloud is formed due to condensation. it consists of a small particle of ice an. small droplets of water, having diameter about ___________microns?
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A. 30

B. 40

C. 45

D. 35

4090. The total length of impervious floor on down stream of the hydraulic structure is determined by Blighs Theory__________________?
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A. Darcy

B. Lane

C. All are correct

D. Khosla
4091. According to Khoslas theory of seepage, the Exit gradient depends upon ____________________?
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A. depth /width ratio

B. width /depth ratio

C. depth /Length ratio

D. Length /depth ratio

4092. How much annual rain fall is in sargodha?
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A. 400 mm

B. 550 mm

C. 500 mm

D. 450 mm

4093. 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. Failure

B. Overturning

C. Stability

D. Suitability

4094. The hydraulic jump is formed on down stream of toe of glacis for the purpose to dissipate surplus energy of the flowing water, the nature and strength of jump depends upon a Number called______________________?
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A. Darcy,s law

B. Froude No

C. Reynolds

D. Webber

4095. If a river or stream is collecting sediment and is building up dunes in its bed is called ______________________?
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A. Sediment river

B. Sub-stable river

C. Stable river

D. Aggrading river
4096. When ever a body is immersed wholly or partially in water, it is lifted up by a force equal to the weight of water displaced by the body ?
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A. None of these

B. Newtons law of otion

C. Archimeds Principle

D. Law of gravity

4097. The precipitation that falls during the growing season of the crop is called__________________?
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A. Useful rain fall

B. Direct rain fall

C. Monsoon rain fall

D. all are correct

4098. The loss of head H/ L is proportional to the length of creep. There fore the loss of head per unit creep length is called ______________________?
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A. Hydraulic gradient

B. Creep length

C. Head loss

D. Exit gradient

4099. Darcy formula for loss of head in pipes is given by, hf=4fl v2 / __________________?
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A. gd2

B. g2d

C. gd

D. 2gd
4100. The aeration of water is done to remove _________________?
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A. Colour

B. Odour

C. Smell

D. Taste