agriculture MCQs – Page 44

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 Review each marked answer and report any item that may be outdated or unclear.

861. The down stream sloping glacis of the Hydraulic structure is made in such a way to form automatically the _____________ and dissipate the surplus energy of flowing water?
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A. Hydraulic jump

B. Pond level

C. Afflux

D. HFL

862. A water flow available in the drains without irrigation season i.e.flow of sanitary sewage is called____________________?
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A. Dry weather flow

B. Surface flow

C. Waste water flow

D. Municipal flow

863. The flow in the river due to the floods may be classified as _____________________?
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A. Laminar flow

B. Turbulent flow

C. Irrotational flow

D. Stream line flow

864. The property of liquid which controls its rate of flow is called __________________?
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A. Capillarity

B. Compressibility

C. Specific gravity

D. Viscosity
865. Velocity of flow in a sewer must be form ______________ to ?
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A. 1 m / sec to 3m/ sec

B. 3m / sec to 4m/ sec

C. 4.5 ml sec to 5 m/ sec

D. 4m / sec to 4.5 ml sec

866. 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. Equivalent moisture

B. Soil moisture

C. Available moisture

D. Field moisture

867. generally useful life of a reservoir is considered terminated when its -gross storage is reduced by _______________ of the design capacity of the reservoir?
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A. 20%

B. 80%

C. 50% l

D. 100%

868. The wearing away of the land surface by wind, water, ice or other geological agent is called__________________?
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A. Erosion

B. Soil conservation

C. fertility depletion

D. Seepage

869. During the peak stage of river, there exist an out flow from river into the ground water reservoir, in such case river will be called _________________?
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A. Effluent stream

B. Seepage stream

C. Influent stream

D. Storm water stream

870. 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. Sensitive

B. Non-flexible

C. Flexible

D. Proportional
871. The disposal of sewage by allowing it to flow and Soak into specially leveled farm land for cultivation purpose is called _____________________?
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A. Trickle irrigation

B. Border irrigation

C. Broad irrigation

D. Check irrigation

872. The inverted filter consists layer of materials of increasing ______________ from bottom to top?
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A. Permeability

B. Up thrust pressure

C. Piping

D. Under mining

873. Which one of the following constitute the best defamation of fruit________________?
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A. A fruit is a product of ovary

B. A fruit is post-fertilization product of the pistil

C. A fruit is a product of flower

D. A fruit is a mature ovary that contain seed
874. Plants which change from the vegetative to the reproductive stage by producing flowers and fruits when the day become longer is called________________?
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A. Long day plants

B. Phototropism

C. Short day plants

D. Photoperiod

875. According to Khoslas theory of seepage, the Exit gradient depends upon ____________________?
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A. Length /depth ratio

B. depth /width ratio

C. depth /Length ratio

D. width /depth ratio
876. 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. Head Regulator

B. All are correct

C. Escape

D. Cross-Regulator

877. To be more close to the actual field conditions, some times artificial rain tests conducted, the instrument used is called ___________________?
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A. v Hydrometer

B. Infiltrometer

C. Rain simulator

D. I.C. curve

878. Silt free water should be supplied to the canals through______________________?
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A. Under sluices

B. Sluice gates

C. Head sluices

D. Scouring sluices

879. The level above the or below the sea level which is also called zero level or datum is called ___________________?
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A. Negative level

B. Reduce level

C. Positive level

D. Soil level

880. In 1991-92 the record production of cotton in Pakistan was_______________?
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A. 1000,000 bales

B. 1200,000 bales

C. 12800,000 bales

D. 1100,000 bales