Mark the plant showing insecticidal properties:?
A.Ocimum basilicum
B.Azadirachta indica
C.Both (a)
B.Azadirachta indica
C.Both (a)
Category: Pollution Mcqs
The percentage of air pollution caused due to smoke:?
A.10-15%
B.15-20%
C.20-25%
D.2-5%
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B.15-20%
C.20-25%
D.2-5%
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To check sonic booms, control should be exerted over:?
A.Traffic on high ways
B.Sirens of every kind
C.Air traffic directions
D.Noise producing devices
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B.Sirens of every kind
C.Air traffic directions
D.Noise producing devices
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The noise created at the launching of space rocket measures around:?
A.120 db
B.150 db
C.180 db
D.240 db
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B.150 db
C.180 db
D.240 db
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The abbreviation MPN stand for:?
A.Most probable number
B.Millions per night
C.Millennium of probable number
D.None of these
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B.Millions per night
C.Millennium of probable number
D.None of these
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The CFC pollution sources include:?
A.Jet air crafts only
B.Fire extinguishers and jet air crafts
C.Refrigerators and jet air crafts
D.All of these
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B.Fire extinguishers and jet air crafts
C.Refrigerators and jet air crafts
D.All of these
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Which is a degradable pollutant??
A.DDT
B.Aluminium foil
C.Domestic wastes
D.Mercury slats
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B.Aluminium foil
C.Domestic wastes
D.Mercury slats
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What are the chief pollutants of the atmosphere which are most likely to deplete the ozone layer??
A.Sulphur di-oxide
B.Carbon di-oxide
C.Nitrogen oxides and fluoro-carbons
D.Carbon monoxide
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B.Carbon di-oxide
C.Nitrogen oxides and fluoro-carbons
D.Carbon monoxide
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Air pollution is maximum caused by:?
A.Sewage and industrial effluents
B.Household detergents and pesticides
C.Automobile exhausts and chemicals from industry
D.Sewage and pesticides
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B.Household detergents and pesticides
C.Automobile exhausts and chemicals from industry
D.Sewage and pesticides
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The term smong coined by:?
A.Tansley
B.Odum
C.Clements
D.Des Voeux
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B.Odum
C.Clements
D.Des Voeux
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