501. hail is precipitation in the form of balls or lumps of ice of size greater than _______________ formed by alternate freezing & melting?
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A. 15 mm diameter

B. 10 mm diameter

C. 5 mm diameter

D. 20 mm diameter

502. For a perfect incompressible liquid flowing in a continuous stream, the total energy of a particle remain the same, while the liquid particle move from one point to another this statement is called ___________________?
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A. Bernoulli equation

B. Pascal s law

C. Continuity Equation

D. Archimedes principle

503. Sediment particles smaller than 0.002 mm which do not settle in water are called____________________?
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A. Fine silt particles

B. All are correct

C. Colloids

D. Fine clay particles

504. A mixture of active and inert ingredients is called_________________?
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A. Inert ingredient

B. Formulation

C. Dose

D. Active ingredient

505. Which insect cause ear splitting plain to some people__________________?
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A. Silver fish

B. Locust

C. Fireflies

D. Cicadas
506. To dispose of the surplus water from dam, a water way is constructed called________________?
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A. Water escape

B. Spillway

C. All are correct

D. Channel

507. The amount of pest induced injury to the crop which will justify the cost of artificial control measures is called________________?
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A. Economic injury level

B. Economic damage

C. Economic threshold

D. None of the Above

508. Tanda dam is constructed on river ___________________?
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A. Kohat

B. Kabul

C. Haro

D. Hub

509. Cavitation is caused by _____________________?
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A. Low pressure

B. Low discharge

C. High velocity

D. High pressure

510. Those insects which lives in groups, clones or tribes form are called__________________?
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A. Gregarious insects

B. Solitary insects

C. Social insects

D. Household insects

511. Aphis lions are predator of___________________?
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A. Sugarcane borer

B. Aphid

C. Jassid

D. Pyrilla

512. In study of a granular material sliding on plane ground, the angle between the perpendicular and the surface in static condition is called ___________________?
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A. All are correct

B. Angle of internal friction

C. Angle of repose

D. Angle of friction
513. Where the most insects are abundant____________________?
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A. None of the above

B. temperature region

C. Tropical region

D. Sub tropical

514. Insect are_________________?
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A. Warm blooded animals

B. Grasshopper

C. None of the above

D. Cold blooded animals
515. Potential pest also called__________________?
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A. Secondary pest

B. Key pest

C. Minor pest

D. Major pest

516. Best example of parasites are ___________________?
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A. Ichneumon, Fleas

B. Cotesia sp

C. Trichograma sp, Horse flie

D. All of above
517. The free living insects that catch and devour smaller or more helpless creatures, usually killing them in getting a single meal is called ?
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A. Prey

B. Parasites

C. Predator

D. Parasitism

518. A material which is used to dilute active material is called__________________?
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A. Adhesive

B. Adjuvant

C. Carrier

D. Agitation

519. Type of reproduction in which young ones are produced by larval or pupal stages is____________________?
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A. Viviparity

B. Polyembryony

C. Paedogenesis

D. Polyembrony

520. Best example of predators are____________________?
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A. Trichograma species

B. Dragon flies, Aphid lions,

C. Lady beetle, flower beetle

D. Dragonflies, Aphid lions, Lady bird beetle, flower beetle
521. An aquifer in which water contained under high pressure as the aquifer is sand witched between two impervious layer is called___________________?
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A. All are correct

B. Un-confined aquifer

C. Confined aquifer

D. No-Artesian aquifer

522. The process of consolidation of stabilized earth work in canal or river embankments. In this process the soil is deposited in layers of specified thickness and at a particular moisture content is called __________________?
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A. Soil stabilization

B. All are correct

C. Densification

D. Compaction

523. Cotesia flavipers is endo larval parasite of_________________?
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A. Sugarcane black borer

B. Sugarcane stem borer

C. Sugarcane top borer

D. Sugarcane root borer

524. Workers of honey bees have number of chromosome_______________?
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A. Triploid

B. None of above

C. Haploid

D. Diploid

525. Function of endo cuticle is________________________?
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A. Rigidity of body parts

B. Extensiblity of integument and flexibility

C. Prevent evaporation

D. Impermeability of water

526. Metalegs of worker honey bee is _____________________?
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A. Silk secreting

B. Cursorial

C. Antenna cleaner

D. Pollen collecting

527. The delta the total water requirement of crop from the time of sowing to harvesting the delta of sugarcane is __________________?
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A. 100cm

B. 120cm

C. 70cm

D. 80cm

528. The pest which damages the crop and causes a loss in quality or quantity which can be calculated such pest is called_______________?
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A. Sub economic pest

B. Economic pest

C. Insect pest

D. Pest

529. A poison produced by a plant, animal or organisms is called____________________?
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A. Toxicant

B. Toxin

C. Neurotoxin

D. None of the Above

530. The chemical used for controlling fish is called__________________?
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A. VICIDE

B. herbicide

C. Ovicide

D. Pesticide
531. Chemical added to pesticide to increase its activity is called________________?
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A. Adjuvant

B. Synergism

C. Agitation

D. Activator
532. Proventriculus also called as___________________?
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A. Gizzard

B. Esophagus

C. Pharynx

D. Crop

533. Queen and drones have_______________number of chromosome ?
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A. Triploid

B. Diploid

C. None of above

D. Haploid
534. _________% of total global water is fresh and its major portion is obtained from Rains ?
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A. 2%

B. 3%

C. 3.20%

D. 2.5%
535. Estimated quantity of global water is __________which covers about 70% of earth?
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A. 1.32x109km3

B. 1.33x109km3

C. 1.30x109km3

D. 1.35x109km3
536. Insect that parasitic other insects are called_________________?
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A. Entomophagous parasites

B. Zoophagous parasites

C. Phytophagous parasites

D. non of theses

537. From a water fall, if water is falling down at the rate of 100 N/sec: on the blades of a turbine when the height of fall is 100 m the power delivered to turbine will be______________?
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A. 5000 kw

B. 10,000 kw

C. 1000 kw

D. 100 kw

538. The parasite which are capable of developing upon a few closely related host species is called_______________?
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A. Transitory parasites

B. Oligophagous parasites

C. Facultative parasites

D. Polyhagous parasites

539. A dose of a toxicant that kills 50% of the exposed organism is called_________________?
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A. LD<sub>75</sub>

B. LC<sub>50</sub>

C. None of the Above

D. LD50
540. The parasites which capable of parasitizing a considerable number of host species is called____________________?
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A. Transitory parasites

B. Polyhagous parasites

C. Facultative parasites

D. oligophagous parasites

541. A fluid is a substance that ____________________?
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A. Can not be subjected to shear force

B. Can not remain at rest under the action of any shear force

C. Always expands until it fills any container

D. Is partially incompressible

542. The insect which Parasitizes one species of host is called__________________?
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A. Permanent Parasite

B. Transitory Parasite

C. Obligated Parasite

D. Intermitted Parasite

543. A chemical which inhibits clotting mechanisms of the blood is called __________________?
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A. Bait

B. Acute poisoning

C. Defoliant

D. Chronic poisoning
544. The concentration of a toxicant that kills 50% of the exposed organism is called_________________?
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A. None of the Above

B. LD<sub>75</sub>

C. LC50

D. LD<sub>50</sub>

545. In case of silt deposition in the dam reservoir to dispose of the effectively ________________ be used?
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A. Silt ejectors

B. Silt excluders

C. All are correct

D. Vortex pipes
546. Population prediction of a particular species with in the field is called____________________?
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A. Haemospora

B. Fore casting

C. Surveillance

D. Pest scouting

547. Against sucking and chewing insect pest we apply___________________?
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A. Endosulfan, Deltamethrin, Dimethoate

B. Monocrotophos, Diazinon, Profenophos

C. Cypermethrin, Permethrin,Malathion

D. All the above
548. The quality a of a pesticide to remain as an effective residue because of its low volatility and chemical stability is termed as__________________?
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A. Desiccant

B. Persistence

C. Aerosol

D. Defoliant

549. Which families are most of them are scavenger ?
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A. Pyralidae

B. Tineidae and Pyralidae

C. Culicidae

D. Tineidae

550. The hydraulic gradient line (H.G.L)represents the sum of_________________?
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A. Water surface

B. Pressure head + datum head

C. Pressure head + velocity head

D. Velocity head