451. The ratio of specific weight of any liquid to the specific weight of water is called as _________________?
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A. Specific gravity of water

B. Density of liquid

C. Density of water

D. Specific gravity of liquid
452. Some insects which are used as bio control agents for used control is called________________?
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A. Phytophagous parasites

B. Zoophagous parasites

C. None of the Above

D. Entomophagous parasites
453. The slow acting pheromones are_________________?
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A. Semio chemicals

B. Releasers

C. Primers

D. Allelo chemicals

454. Mosquitoes, bed bugs are____________________?
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A. transitary Parasite

B. Intermitttent Parasite

C. Obligate Parasite

D. Permanent Parasite

455. The parasite which can live on more than one host is called__________________?
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A. Facultative Parasite

B. Transitory Parasite

C. Intermitted Parasite

D. Obligated Parasite

456. The rapid reappearance of the pest population in injurious number is called_________________?
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A. Pest resurgence

B. IPC

C. Pest outbreak

D. IPM

457. What are helpful insects___________________?
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A. Silkworm, Pollinators, Predators, Scavenges

B. Predators, Pollinators, Lac insects

C. Predators, Pollinators, Parasites, Honey bees

D. Weed killers, scavengers, predator, pollinator, parasites
458. What colour show extremely hazard to human being_________________?
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A. Yellow

B. Red

C. Brown

D. Blue

459. What is function of deterrent__________________?
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A. None of the above

B. Chemical which prevent feeding

C. Prevent ovipositon of an insect

D. Prevent feeding and oviposition of an insect
460. The discharge over a rectangular notch is determined by _____________________?
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A. 2/3 cd. B (2g) 1/2 H

B. 2/3 cd. B (2g) 1/2 H3/2

C. 2/3 cd. b (2 gh) 1/2

D. 2/3 cd. b (2g) 1/2 H 5/2

461. The last length of the river before it falls into the sea is known as __________________?
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A. Delta stage

B. Mountainous stage

C. trough stage

D. Sub-mountainous stage

462. The haring organs in grasshopper_________________?
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A. Johnstons organ

B. Chorodotonal organ

C. Tympanal organ

D. None of the above

463. Various methods of pest scouting are_________________?
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A. Zig zag method

B. Diagonal method

C. All the above

D. Maryos method

464. The pesticide which is used for killing or controlling the eggs of insects is called___________________?
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A. Pesticide

B. Fungicide

C. Ovicide

D. Avicide

465. The ability of a plant by means of which it is less damaged by insects is________________?
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A. Pest avoidance

B. Resistance

C. Tolerance

D. Plant resistance

466. Sterilization is the process of killing ___________ of water borne diseases, so as to make it safe for hospital use?
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A. Pathogenic bacteria

B. Insects

C. Fungi bacteria i

D. Algai bacteria

467. The lowest pest population that will cause economic damage is called ___________________?
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A. Economic damage

B. None of the Above

C. Economic threshold level

D. Economic injury level
468. Out/ of a well water is more than canal water because____________________?
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A. Conveyance losses in well irrigation are less

B. Lifting of water increase cost of well water

C. Well water is used economically

D. Well water is clear than canal water

469. Volatile chemical which exist in the gaseous state in sufficient concentration to be lethal for a given pest is called ?
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A. Pyrethorid

B. carbamate

C. Fumigant

D. Arsenicals pesticide

470. A chemical which attracts pest to a trap is called__________________?
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A. Defoliant

B. Acute poisoning

C. Chronic poisoning

D. Bait
471. What is T.S.O ?
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A. Tehsil sale officer

B. Technical scientific officer

C. Technical sales officer

D. None of the Above

472. Weep holes are provided in canal lining to _____________________?
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A. Have drainage facility

B. Give additional anchorage against sliding

C. Provide water into branch canals

D. improve strength of lining

473. Butterflies having wing coupling apparatus is__________________?
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A. Frenulum

B. Jugum

C. Overlapping and Jugum

D. Overlapping
474. What is antidote of organophosphate and carbamate poisoning________________?
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A. Diazepam

B. Atropine

C. None of the Above

D. Earbiturates

475. Any organism which harm or causes damage man directly or indirectly called as________________?
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A. Insect pest

B. Pest

C. Insect

D. none of the above

476. Which insect have bacteria and in their digestive system_______________?
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A. Ants

B. Silver fish

C. None

D. Termites
477. The ingredient of pesticide formulation responsible for toxic effect is called_________________?
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A. Active ingredient

B. Dose

C. Pesticide

D. Insert ingredient

478. Reduction in pest population by the utilization of agricultural practices to make the environment unfavorable for pest is called__________________?
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A. Cultural control

B. Mechanical control

C. Natural control

D. Physical control

479. The collective action of environmental factors that maintain numbers of pest population with in certain limit over a time is called_______________?
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A. Cultural control

B. Natural control

C. Artificial control

D. Physical control

480. Development of___________in river is due to meandering ?
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A. Delta

B. Critical velocity

C. Turbulence

D. Cutoff
481. An engineer who is approached by a client for the purpose of design of hydraulic structures like dam. Barrage or Regulator is called ____________________?
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A. Chartered Engineer

B. Irrigation Engineer

C. Consulting Engineer

D. All are correct

482. What is the family of mosquito________________?
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A. Bombicidae

B. Tineidae

C. Culicidae

D. Pyralidae

483. Dragonfly and damselfly have type of legs_________________?
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A. Metatorial

B. Raptorial

C. Fossorial

D. Basket like
484. The parasites whose hosis are also parasites collectively termed as___________________?
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A. Hyperparasites

B. Phytophagous parasites

C. None of the Above

D. Heteroxenous parasites

485. The height from the top of the embankment to the normal water level in canal .Dam Reservoir etc, which allows for small waves to splash without over flow is called___________________?
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A. Free faced

B. Free end

C. Free board

D. Free space

486. Most of the insect require__________________?
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A. Vitamin D

B. Vitamin A

C. Vitamin B

D. Vitamin C

487. Against Lepidopterous larvae we apply_________________?
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A. All the above

B. Formothion

C. Methamidohpos

D. Lefenuron, Chlorfluazuron, Flufenoxum
488. Main kind of insect pests are___________________?
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A. Major pest and minor pest

B. Key pest

C. All the above

D. Migrant pest and potential pest

489. Ground water moving down wards in the un-saturated ground above the water table is called___________________?
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A. Gravity water

B. All are correct

C. Capillary water

D. Hygroscopic water

490. The season that starts from 1st October and ends on 31st March, runs for 182 days is called __________________?
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A. Monsoon season

B. Wheat season

C. Kharif season

D. Rabi season
491. The chemical used for controlling of mites is called__________________?
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A. Mollusicide

B. Acaricide

C. Nematicide

D. Nematicide

492. What are productive insects_________________?
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A. Silk worm, Pollinators, Predators

B. Lac insect, Honey bees, pollinator

C. Silk worms Lac insects Honey bees

D. Parasites, Predators, Pollination

493. The group of pesticide which makes pest unable to reproduce is called_________________?
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A. Sterilant

B. Selective

C. Fumigants

D. Protectant

494. A chemical which causes plant does it called __________________?
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A. Chronic poisoning

B. Acute poisoning

C. Bait

D. Defoliant
495. The ideal crop for wastewater or sewage irrigation is _______________________?
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A. Mango

B. Orange

C. Banana

D. Dates

496. Ingredient added in pesticide to enhance and maintain efficacy of active ingredient is____________________?
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A. Dose

B. Pesticide

C. Active ingredient

D. Insert ingredient
497. The chemical used for killing birds is called________________?
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A. Pesticide

B. Ovicide

C. Avicide

D. None of these

498. The parasites which requires several or different hosts for its complete development is called ?
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A. Entomophagous parasites

B. Phytophagous parasites

C. Monoxenous parasite

D. Heteroxenous parasites
499. Rabi crops pertains to ___________________?
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A. Summer season

B. Monsoon season

C. Throughout the year

D. Winter season
500. A level of resistance show by a cultivar is similar against all insect biotype such type of resistance is__________________?
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A. General resistance

B. Specific resistance

C. Cross resistance

D. Vertical resistance