agriculture MCQs – Page 29

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 Review each marked answer and report any item that may be outdated or unclear.

561. Water available above the top of root zone of plants is about 15% of soil moisture contents, is mostly not available to plants celled_________________?
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A. Capillary water

B. Irrigation water

C. Hygroscopic water

D. Effective water

562. What is DDT__________________?
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A. Dimethory diphenyl,trichloro,ethane

B. Dichloro diphenyl teracholoride

C. None of the Above

D. Dichloro-diphenyl,trichloro,ethane
563. The formula used to calculate maximum flood discharge for a hilly () is_______________?
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A. Dickens formula

B. Ryves formula

C. Inglis formula

D. Nawab Jung Bahadur All formula
564. Syrphid flies have type of larvae________________?
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A. vermiform

B. Carabiform

C. Platy form

D. Eruiform

565. Function of epiculticle in insect is__________________?
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A. Impermeability of water and prevent evaporation

B. Impermeability of water

C. Prevent evaporation

D. Rigidly of body parts

566. Permissible velocity of water flowing through concrete lined tunnel is usually __________________?
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A. 3 4m/sec

B. 6 7m/sec

C. 4 5m/sec

D. 5 6m/sec

567. Always flow inside the ground is ____________________?
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A. Turbulent

B. Laminar

C. Compressible

D. Rotational

568. Type of pheromone which get together the insects for food and mating is known as________________?
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A. Trial marking pheromone

B. Aggregation pheromone

C. Alarm pheromone

D. Sex pheromone

569. A pipe flowing full, the liquid particles in the pipe has maximum velocity at __________________?
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A. All are correct

B. Top of pipe

C. Centre of pipe

D. Bottom of pipe

570. The velocity in a large canal or channel measured at a depth of ___________________ gives the mean velocity using the current meter?
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A. 0.5 depth

B. 0.5m

C. 0.6 depth

D. 0.6m

571. A substance that destructive to nerve tissue is called____________________?
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A. Swath

B. Neurotoxin

C. Toxicant

D. Drift

572. Beetles, weevils, earwigs. have fore wing very thick and hard structure is__________________?
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A. Halteres

B. Stripy

C. Elytra

D. Hemelytra

573. That part of the flow in a stream comes from sub-soil or valley, may be beneath the top surface of channel bed is called__________________?
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A. Base flow

B. Ground flow

C. All are correct

D. Sub-surface flow

574. The pesticide does not allow larval insect pest to moult further is called_________________?
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A. Fumigants

B. Protectant

C. Insect growth regular

D. Sterilant

575. Zinc phosphide is____________________?
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A. Pesticide

B. Rodenticide

C. Weedicide

D. Insecticide

576. An earth embankment built on one or both sides of a river, some distance away from its banks to control flood is called _______________?
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A. Dyke

B. Marginal embankment

C. Embankment

D. Flood protective bund

577. The law which states that the intensity of pressure at any point in a liquid at rest is same in all directions_________________?
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A. None

B. Pascals law

C. Darcys law

D. Archimeds law

578. A substance used in a pesticide, it helps the spray material to adhere to the sprayed surface is called_________________?
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A. Adjuvant

B. Agitation

C. Activator

D. Adhesive
579. A dam which is prevented from overturning by the action of lateral or vertical up thrust of water by its weight is called __________________?
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A. Buttress dam

B. Arch dam

C. Gravity dam

D. Coffer dam

580. Commercial production of silk is called_________________?
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A. Sericulture

B. Lac culture

C. Floriculture

D. Apiculture