The most harmful effect of ionising radiations precisely involves:?
A.Cell membrances
B.DNA
C.Mitochondria and ribosomes
D.Nucleus
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B.DNA
C.Mitochondria and ribosomes
D.Nucleus
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Category: Pollution Mcqs
In coming years, skin related disorders will be more common due to:?
A.Pollutants in air
B.Use of detergents
C.Water pollution
D.Depletion of O3 layer
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B.Use of detergents
C.Water pollution
D.Depletion of O3 layer
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The zone of atmosphere that lies near the ground is:?
A.Troposphere
B.Stratosphere
C.Homosphere
D.Heterosphere
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B.Stratosphere
C.Homosphere
D.Heterosphere
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Which of the following is most poisonous??
A.CO
B.CO2
C.C
D.SO2
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B.CO2
C.C
D.SO2
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How CO emitted by automobiles prevents transport of O2 in the body tissues??
A.By changing O2 into CO
B.By destroying the haemoglobin
C.By forming a stable compound with haemoglobin
D.By obstructing the reaction of O2 with haemoglobin
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B.By destroying the haemoglobin
C.By forming a stable compound with haemoglobin
D.By obstructing the reaction of O2 with haemoglobin
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The atmospheric pollution is caused by:?
A.O3
B.CO
C.CO2
D.N2
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B.CO
C.CO2
D.N2
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Water pollution:?
A.Increases oxygenation
B.Decreases turbidity
C.Increases turbidity deoxygenation
D.Increases photosynthesis
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B.Decreases turbidity
C.Increases turbidity deoxygenation
D.Increases photosynthesis
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Ozone layer in stratosphere is effected by:?
A.Excess CO2
B.Excess CO
C.Chloro-fluoro-carbon
D.Low rainfall
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B.Excess CO
C.Chloro-fluoro-carbon
D.Low rainfall
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Aerosols reduce primary productivity by:?
A.Decreasing O2
B.Reducing photosynthesis
C.Competing with CO2
D.Being toxic to chlorophlasts
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B.Reducing photosynthesis
C.Competing with CO2
D.Being toxic to chlorophlasts
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As compared to tap water the BOD of sewage polluted water shall be:?
A.High
B.Low
C.Same
D.None of these
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B.Low
C.Same
D.None of these
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