Category: Pollution Mcqs

A.BOD much higher than COD
B.BOD slightly higher than COD
C.COD slightly higher than BOD
D.COD much higher than BOD
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A.P32
B.Sr90
C.Cs137
D.I131
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A.Population explosion
B.Nitrogen di-oxide
C.Global warming
D.Sulphur dioxide
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A.20 times
B.100 times
C.2 times
D.200 times
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A.Industrial waste
B.Oil spills
C.Death of marine fauna
D.None of these
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A.Air pollution
B.Water pollution
C.Soil pollution
D.All of these
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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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A.Fungi
B.Lichen
C.Algae
D.Fishes
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A.Heavy metals
B.Faecal matter
C.Industrial effluents
D.Pollen of aquatic plants
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A.Lithosphere
B.Biosphere
C.Atmosphere
D.Hydrosphere
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