agriculture MCQs – Page 30

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 Review each marked answer and report any item that may be outdated or unclear.

581. The bees are not reared for commercial purpose are called_________________?
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A. Wild bees

B. Domestic bees

C. Wild bees

D. None of the above

582. A chemical or secretions which are thrown outside the body for transmitting message to the individual of same species is_________________?
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A. Ecdysone

B. Hormone

C. Pheromone

D. Juvinile Hormone

583. The depth of flow at which the energy is maximum is called ____________________?
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A. Super critical depth

B. Critical depth

C. All are correct

D. Sub-critical depth

584. The delta the total depth of water consumed by a crop from 1st watering when matures, the delta for rice is___________________?
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A. 120cm

B. 100cm

C. 80cm

D. 75cm

585. Death of an insect from a single dose is called__________________?
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A. Defoliant

B. Chronic poisoning

C. Acute poisoning

D. Bait

586. For safe application of pesticide which things are required ?
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A. Head cores

B. Overall,gloves

C. All of above

D. Goggles, respirator

587. When the reservoir is full, the maximum compressive force in a gravity dam is produced ___________________?
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A. Within the middle third of base

B. At centre of base

C. At the heel

D. At the toe
588. The width of the area treated in one pass by a sprayer or other applicator is called___________________?
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A. Swath

B. Drift

C. Aerosol

D. Toxin

589. What is antidote__________________?
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A. Treatment given to counteract the effects of a poison

B. None of the Above

C. Increase the effects of a poison

D. No action against pesticide

590. What KD50____________________?
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A. Low knock down

B. Medium knock down

C. None of above

D. Highly knock down

591. The total energy line lies over the hydraulic gradient line by an amount equal to________________?
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A. v2/g

B. v/g

C. v2/2g

D. v/2g

592. It is a substance added to a pesticide to impure the qualities of pesticide formulation is called_________________?
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A. Adjuvant

B. Agitation

C. Synergism

D. Activator

593. The living organism that live in or on the bodies of other living organisms from which they get their food, during at least one stage of their existence is called________________?
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A. Prey

B. Parasitism

C. Parasites

D. Predator

594. Propagation and release of sterile incompatible individuals is done in pest population is called__________________?
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A. Chemical control

B. Genetic control

C. Physical control

D. Regularity control

595. A channel is said lo be of most economical cross section, for a given cross-sectional area and bed slope when it __________________?
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A. All of these

B. Involves lesser excavation

C. Has minimum wetted perimeter

D. Gives max. Discharge

596. The insect skeleton is composed of series of plates called__________________?
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A. Conjunctivae

B. Somites

C. Sutures

D. Sclerites
597. The falling drop of rainwater become spherical due to _________________?
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A. None of these

B. Capillary

C. Surface Tension

D. Compressibility

598. Volume of water that unit volume of aquifer will give up by gravity pull is called ____________________?
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A. Specific retention

B. Specific yield

C. All are correct

D. Specific volume

599. Sliding failure occurs in a solid gravity dam when____________________?
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A. Resultant of all forces cuts the base of the dam out side the toe

B. Shear friction factor Is less than 1.5

C. Resultant of all forces cuts the base at the inner middle third point

D. Ratio of over turning moments exceeds than unity

600. A channel artificially constructed for water conveyance of appreciable quantities with no problem of silting and scouring is called ____________________?
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A. A and B are correct

B. Alluvial canal

C. A regime canal

D. Stable canal