agriculture MCQs – Page 36

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 Review each marked answer and report any item that may be outdated or unclear.

701. The hydraulic mean depth for a circular pipe of diameter d is ____________________?
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A. d/4

B. d/6

C. d/2

D. d/3

702. The run-off from catchment areas, Roads, buildings and other fallow lands is called ____________________?
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A. Surface run-off

B. Dry weather flow

C. Storm water

D. Rain water

703. A module or outlet in which discharge depends upon the difference of head between distributary and the water course is called ___________________?
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A. Non-modular

B. Semi-modular

C. Rigid module

D. Modular

704. Onion is a ___________ rooted crop?
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A. Shallow

B. Spread

C. Deep

D. Non-rooted

705. Cotton plant belong to one of the following categories______________?
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A. C4 plant

B. on of these

C. C3 plant

D. CAM plant

706. A plot of graphical representation showing river flow against time is called _____________________?
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A. Hydrograph

B. Monograph

C. All are correct

D. Hyetograph

707. Bouyant force is equal to the ___________ of liquid displaced by the body in water mass?
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A. Weight

B. Specific weight

C. Specific gravity

D. Volume
708. An outlet through which the discharge depends upon the water level in the distributary is called ___________________?
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A. Flexible module

B. Rigid module

C. Non-flexible

D. Non-modular

709. The climates of sindh province comes under__________________?
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A. Temperature

B. Sub tropical

C. tropical

D. all

710. If in a river the flood rises and falls suddenly due to storm rain, then such river is called __________________?
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A. Virgin

B. Deltaic

C. Tidal

D. Flashy
711. A fixed reference point from which the discharge of flowing water is measured is________________?
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A. Reduce level

B. Contour point

C. Bench mark

D. Reference point

712. The depth of water in a channel, corresponding to minimum specific energy is called ________________?
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A. None of these

B. Full supply depth

C. Normal depth

D. Critical depth
713. To keep the Hydraulic structure safe against undermining the ________________ should be safe?
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A. Critical exit gradient

B. Hydraulic gradient

C. Creep length

D. Exit gradient
714. Crop ideotype refers to________________?
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A. All the above

B. Good plant type

C. Model plant type

D. Ideal plant type

715. When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called__________________?
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A. Ponding on down stream

B. All are correct

C. Lowering down of bed

D. Retrogression
716. If E1 is the energy before the hydraulic jump and E2 is the energy after the hydraulic jump the efficiency of jump is then given by _____________________?
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A. E1 / E2

B. E2 / E1

C. E2 E1

D. E1 E2

717. On the basis of cotton cultivated area which on of the following countries occupies first position ?
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A. China

B. India

C. Pakistan

D. America

718. The quantity of water lost by transpiration from the plants or crops and evaporation from fields adjacent to these plants is called ___________________?
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A. Un-confined water

B. Consumptive use

C. a & b are correct

D. Evapo-transpiration

719. Crop rotation means growing_________________?
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A. Growing green manures

B. Growing different crops

C. Growing fodder crops

D. Same craps

720. Main reason behind the shedding of flower in cotton is__________________?
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A. Low temperature

B. Cloudy day

C. High temperature

D. Humidity