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question_answer1)
Most common pesticides used in the crops are
A)
BHC, aldrin, malathion, pyrethrin done
clear
B)
Aldrin, malathion, lead arsinate, sodium fluoride done
clear
C)
Aldrin, malathion, sodium arsinate, lead arsi_ate done
clear
D)
Cryolite, aldrin, pyrethrin done
clear
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question_answer2)
DDT is a [AMU 1986]
A)
Organochlorine done
clear
B)
Organophosphate done
clear
C)
Carbamate done
clear
D)
Triazine done
clear
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question_answer3)
Full name of BHC is [MP PMT 1987]
A)
Benzene hexachloride done
clear
B)
Hexachlorohaxane done
clear
C)
Benzene heptachloride done
clear
D)
a and b both done
clear
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question_answer4)
First pesticide used by man is
A)
Rotenone done
clear
B)
Pyrethrin done
clear
C)
Pheromone done
clear
D)
Thuriocide done
clear
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question_answer5)
The most famous pesticide of the world is [BVP 2003]
A)
Methyl isocyanate done
clear
B)
DDT done
clear
C)
Gammexane done
clear
D)
Malathion done
clear
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question_answer6)
'Rotenone' is [CBSE PMT 1995; BHU 1999; Pb. PMT 2000]
A)
A bioherbicide done
clear
B)
An insect hormone done
clear
C)
A natural herbicide done
clear
D)
A natural insecticide done
clear
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question_answer7)
Natural insecticide obtained from neem is [AFMC 2004]
A)
Nicotine done
clear
B)
Azadirectane done
clear
C)
Ecdysone done
clear
D)
All done
clear
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question_answer8)
?Sporeine' is a
A)
Herbicide done
clear
B)
Pesticide done
clear
C)
Mycoherbicide done
clear
D)
Insecticide done
clear
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question_answer9)
First bioinsecticide to be developed on commercial scale was [KCET 1998]
A)
Morphine done
clear
B)
Quinine done
clear
C)
Sporeine done
clear
D)
Phytophthora palmivora done
clear
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question_answer10)
Fish which eradicates the mosquito larva, is [CBSE PMT 1999]
A)
Anabus done
clear
B)
Rohu done
clear
C)
Gambusia done
clear
D)
Cutter fish done
clear
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question_answer11)
DDT was first synthesized by
A)
Othnar Zeidler done
clear
B)
Paul Muller done
clear
C)
Michael Faraday done
clear
D)
Schrader done
clear
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question_answer12)
Pick out the correct statement
A)
DDT is more toxic than BHC done
clear
B)
Aldrin is an organophosphate done
clear
C)
DDT is a non-biodegradable pollutant done
clear
D)
To mammals DDT is highly toxic done
clear
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question_answer13)
The most common pesticide used in India is [BHU 1985]
A)
Baygon done
clear
B)
BHC done
clear
C)
DDT done
clear
D)
Endrin done
clear
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question_answer14)
The term ?bio-magnification? refers to the [CET Chd. 1990; KCET 1997]
A)
Increase in population size done
clear
B)
Increase in the concentration of non-degradable pollutants as they pass through the food chains done
clear
C)
Blowing up of environmental issues by man done
clear
D)
Growth of organisation due to food consumption done
clear
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question_answer15)
Eutrophication is due to [Wardha 2001]
A)
Air pollution done
clear
B)
Radiation pollution done
clear
C)
Water pollution done
clear
D)
Noise pollution done
clear
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question_answer16)
Thurioside is a proteinaceous toxin which is obtained from [Manipal PMT 1990; CBSE PMT 1991]
A)
Biofertilizer done
clear
B)
Farmyard manure done
clear
C)
Green manure done
clear
D)
Bacterial origin done
clear
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question_answer17)
Which of the following is the first fungicide [BHU 1995]
A)
2, 4-D done
clear
B)
D.D.T. done
clear
C)
B.H.C. done
clear
D)
Bordeux mixture done
clear
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question_answer18)
Which of the following insecticide is obtained from the roots of Derris elleptica [BHU 2004]
A)
Cinerin done
clear
B)
Nicotine done
clear
C)
Rotenone done
clear
D)
Pyrethrum done
clear
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question_answer19)
Biological control of agricultural pests, unlike the chemical control, is [CBSE PMT 1995]
A)
Toxic done
clear
B)
Polluting done
clear
C)
Very expensive done
clear
D)
Self-perpetuating done
clear
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question_answer20)
Herbicides prevent [MP PMT 1987]
A)
Water reabsorption done
clear
B)
Photolysis of water done
clear
C)
Transpiration done
clear
D)
Respiration done
clear
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