The sea water gets pollution mainly due to:?
A.Industrial waste
B.Oil spills
C.Death of marine fauna
D.None of these
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B.Oil spills
C.Death of marine fauna
D.None of these
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Category: Pollution Mcqs
Heating of earth surface is due to:?
A.Air pollution
B.Water pollution
C.Soil pollution
D.All of these
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B.Water pollution
C.Soil pollution
D.All of these
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Greenhouse effect is:?
A.Caused by CO2 only
B.Caused by CH4, SO2, NO2 gases
C.Caused by those gases which absorb the infra-red light reflecting from earth
D.Caused by combination of many gases
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B.Caused by CH4, SO2, NO2 gases
C.Caused by those gases which absorb the infra-red light reflecting from earth
D.Caused by combination of many gases
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Pollution of SO2 destroy:?
A.Fungi
B.Lichen
C.Algae
D.Fishes
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B.Lichen
C.Algae
D.Fishes
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Escherichia coli is used as an indicator organism to determine pollution of water with:?
A.Heavy metals
B.Faecal matter
C.Industrial effluents
D.Pollen of aquatic plants
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B.Faecal matter
C.Industrial effluents
D.Pollen of aquatic plants
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The part of earth in which life exists is known as:?
A.Lithosphere
B.Biosphere
C.Atmosphere
D.Hydrosphere
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B.Biosphere
C.Atmosphere
D.Hydrosphere
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A lake with an inflow of domestic sewage rich in organic waste may result in:?
A.Drying of the lake very soon due to algal bloom
B.An increased production of fish due to lot of nutrients
C.Increased population of aquatic food web organisms
D.Death of fish due to lack of oxygen
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B.An increased production of fish due to lot of nutrients
C.Increased population of aquatic food web organisms
D.Death of fish due to lack of oxygen
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The most harmful pesticide is:?
A.PAN
B.2,4,5-T
C.2,4-D
D.DDT
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B.2,4,5-T
C.2,4-D
D.DDT
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Which of the following enhances BOD of water??
A.Algae
B.Sand
C.Moss
D.Sugar mill effluents
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B.Sand
C.Moss
D.Sugar mill effluents
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The river Periyar gets pollution mainly from:?
A.Tanneries
B.Paper factories
C.Chemical factories
D.Sugar mills
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B.Paper factories
C.Chemical factories
D.Sugar mills
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