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question_answer1)
Lichens are important in the studies on atmospheric pollution because they
A)
Can grow in polluted atmosphere done
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B)
Can readily multiply in polluted atmosphere done
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C)
Efficiently purify the atmosphere done
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D)
Are very sensitive to pollutants like sulphur dioxide done
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question_answer2)
Which of the following pollutants affect more to organisms of the higher trophic level of a food chain due to biological amplification
A)
Sewage and plant fertilizers done
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B)
Detergents done
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C)
Heavy metals mercury salts and non- biodegradable phenolic chemicals done
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D)
Poisonous cynides done
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question_answer3)
The major factor in causing global warming is
A)
Increase in oxygen concentration in atmosphere done
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B)
Decrease in carbon dioxide concentration in atmosphere done
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C)
Increase in carbon dioxide concentration in atmosphere done
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D)
Decrease in atmospheric nitrogen done
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question_answer4)
Exposure of an organism to UV system causes
A)
Photodynamic action done
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B)
Formation of thymidine done
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C)
Splitting of H-bonds of DNA done
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D)
Splitting of phosphodiester bonds done
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question_answer5)
Emphysema disease is caused by
A)
\[S{{O}_{2}}\] done
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B)
\[C{{O}_{2}}\] done
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C)
Photochemical smog done
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D)
Mercury done
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question_answer6)
The presence of ozone \[\left( {{O}_{3}} \right)\] in the atmosphere of earth [CPMT 1984]
A)
Hinders higher rate of photosynthesis done
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B)
Helps in checking the penetration of ultraviolet rays to earth done
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C)
Has been responsible for increasing the average global temperature in recent years done
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D)
Is advantageous since it supplies \[{{O}_{2}}\] for people travelling in jets done
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question_answer7)
The component of a living cell affected by the pollutant \[S{{O}_{2}}\] is [CPMT 1985]
A)
Nucleus done
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B)
All cell membrane system done
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C)
Cell wall done
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D)
Plasmodesmata done
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question_answer8)
Acid rain is caused by or recent reports of acid rain in some industrial cities are due to the effect of atmospheric pollution by [MP PMT 1987, 90; BHU 1989; CPMT 1989; CBSE PMT 1988, 89; KCET 1994; EAMCET 1995; Pb. PMT 2004]
A)
Excessive release of\[C{{O}_{2}}\]by burning of fuels like wood and charcoal, cutting of forests and increased animal population done
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B)
Excessive release of \[N{{O}_{2}}\]and \[S{{O}_{2}}\] in atmosphere by burning of fossil fuel done
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C)
Excessive release of \[N{{H}_{3}}\] by industrial plants and coal gas done
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D)
Excessive release of \[CO\] in atmosphere by incomplete combustion of coke, charcoal and other carbonaceous fuel in paucity of oxygen done
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question_answer9)
Minamata disease is a pollution related disease results from [BHU 1989, 90; EAMCET 1995]
A)
Oil spills into sea done
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B)
Accumulation of arsenic into atmosphere done
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C)
Release of industrial waste mercury into fishing water done
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D)
Release human organic waste into drinking water done
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question_answer10)
Air pollution causing photochemical oxidants production include [AMU 1989]
A)
Carbon monoxide, sulphur dioxide done
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B)
Nitrous oxide, nitric acid fumes, nitric oxide done
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C)
Ozone, peroxyacetyl nitrate, aldehydes done
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D)
Oxygen, chlorine, fuming nitric acid done
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question_answer11)
In Minamata Bay, Japan, which of the following animals remained free from Minamata disease [CBSE PMT 1995]
A)
Cats done
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B)
Rabbits done
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C)
Dogs done
clear
D)
Pigs done
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question_answer12)
How carbon monoxide, emitted by automobiles, prevents transport of oxygen in the body tissues [CBSE PMT 1998]
A)
By chaning oxygen into carbon dioxide done
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B)
By destroying the haemoglobin done
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C)
By forming a stable compound with haemoglobin done
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D)
By obstructing the reaction of oxygen with haemoglobin done
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question_answer13)
Photochemical smog formed in congested metropolitan cities mainly consists of [AIIMS 2003]
A)
Ozone, peroxyacetyl nitrate and \[N{{O}_{x}}\] done
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B)
Smoke, peroxyacetyl nitrate and \[S{{O}_{2}}\] done
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C)
Hydrocarbons, \[S{{O}_{2}}\] and \[C{{O}_{2}}\] done
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D)
Hydrocarbons, ozone and \[S{{O}_{x}}\] done
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question_answer14)
The phenomenon in which nutrient enrichment of a water body supports a dense growth of one or may organisms but decreases the species diversity is called [AMU 2005]
A)
Biological magnification done
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B)
Species promotion done
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C)
Eutrophication done
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D)
None of the above done
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