-
question_answer1)
Global climate is threatened by increase in concentration of
A)
Oxygen done
clear
B)
Nitrogen done
clear
C)
Water vapours done
clear
D)
Greenhouse gases done
clear
View Solution play_arrow
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question_answer2)
Accumulation of fluoride in plant leaves causes
A)
Chlorosis done
clear
B)
Stem rot done
clear
C)
Tip burn done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer3)
Excessive inhalation of manganese causes
A)
Pneumonia done
clear
B)
Gout done
clear
C)
Anaemia done
clear
D)
Diptheria done
clear
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question_answer4)
Which of the following statement is incorrect
A)
Carbon monoxide is the major environment pollutant done
clear
B)
All pollutants are not waste done
clear
C)
Nitrogen and Mg can pollute water done
clear
D)
Lichens are affected by sulphur dioxide done
clear
View Solution play_arrow
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question_answer5)
A pollutant is any substance chemical or other factor that changes
A)
Natural geochemical cycles done
clear
B)
Natural balance of our environment done
clear
C)
Natural flora of a place done
clear
D)
The natural wild life of a region done
clear
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question_answer6)
Which of the following gas causes pollution
A)
B)
C)
Both a and b done
clear
D)
None of the above done
clear
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question_answer7)
Cyanosis is caused by
A)
B)
Nitrate concentration done
clear
C)
Copper done
clear
D)
Chromium done
clear
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question_answer8)
Carrier of fluorosis is
A)
B)
Chlorine done
clear
C)
Nitrogen done
clear
D)
Water done
clear
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question_answer9)
Gastro-intestinal disturbances is caused by
A)
Chromium done
clear
B)
Cadmium done
clear
C)
Sodium done
clear
D)
Selenium done
clear
View Solution play_arrow
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question_answer10)
Decrease in rate of mitosis in root tips is caused by
A)
B)
C)
Copper done
clear
D)
Lead done
clear
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question_answer11)
B.O.D. test or biological oxygen demand test is made for measuring
A)
Air pollution done
clear
B)
Water pollution done
clear
C)
Noise pollution done
clear
D)
Soil pollution done
clear
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question_answer12)
In B.O.D. test, oxygen plays an important role to
A)
Destroy inorganic matter done
clear
B)
Destroy pollution done
clear
C)
Destroy waste organic matter done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer13)
Water pollution can be stopped best by
A)
Treating effluents to remove injurious chemicals done
clear
B)
Rearing more fishes done
clear
C)
Cultivating useful water plants done
clear
D)
Spraying with DDT done
clear
View Solution play_arrow
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question_answer14)
Where did the epidemic bone softening disease 'Itai - Itai' occurred first
A)
Burma done
clear
B)
Japan done
clear
C)
South Korea done
clear
D)
USA done
clear
View Solution play_arrow
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question_answer15)
What was the cause of "Yusho" disease which occurred in 1968 from a leak in canning factory
A)
DBCP done
clear
B)
PCB done
clear
C)
Formaldehyde done
clear
D)
Mercury done
clear
View Solution play_arrow
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question_answer16)
Which of the following would be a natural pollution
A)
Forest fires done
clear
B)
Eutrophication done
clear
C)
Occurrence of smog done
clear
D)
View Solution play_arrow
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question_answer17)
Which of the following atmospheric pollutants cause general chlorosis i.e. destruction of chlorophyll
A)
CO done
clear
B)
C)
D)
Hydrocarbons done
clear
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question_answer18)
Which component of a living cell is affected by the pollutant SO2
A)
Nucleus done
clear
B)
Membrane system done
clear
C)
Cell wall done
clear
D)
Plasmodesmata done
clear
View Solution play_arrow
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question_answer19)
The major cause (80%) of air pollution in big cities is due to
A)
Transportation by automobiles done
clear
B)
Industrial activities done
clear
C)
Use of insecticides done
clear
D)
Radioactive fallouts done
clear
View Solution play_arrow
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question_answer20)
In metropolitan cities like Mumbai and Calcutta, the major atmospheric pollutants are
A)
Carbon monoxide and oxides of sulphur done
clear
B)
Hydrocarbons and hot air done
clear
C)
Pollens and marsh gas done
clear
D)
Ozone done
clear
View Solution play_arrow
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question_answer21)
Which of the following is a secondary pollutant
A)
B)
C)
D)
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question_answer22)
The common refrigerant chlorofluoro-methane (freon) and \[N{{O}_{2}}\] is a serious pollutant because
A)
It lowers atmospheric temperature done
clear
B)
It prevents cloud condensation done
clear
C)
It destroys haemoglobin done
clear
D)
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question_answer23)
Pollutant from motor-car exhaust which causes a mental disease is
A)
B)
C)
Pb done
clear
D)
Hg done
clear
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question_answer24)
Photochemical transformation of the automobile exhaust emission in UV wavelength of sunlight results into
A)
B)
C)
D)
View Solution play_arrow
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question_answer25)
Which of the following is a main factor of water pollution
A)
Commercial production done
clear
B)
Windmill done
clear
C)
Smoke and ammonia done
clear
D)
Detergents done
clear
View Solution play_arrow
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question_answer26)
Eutrophication is caused by
A)
Mine effluents done
clear
B)
Sewage and detergents done
clear
C)
Petrochemical and fertilizer plant effluents done
clear
D)
View Solution play_arrow
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question_answer27)
By which method the quantity of organic pollutants in water can be determined
A)
By pH measurement done
clear
B)
By transparency measurement done
clear
C)
By measuring the change of colour done
clear
D)
By measuring BOD done
clear
View Solution play_arrow
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question_answer28)
High coliform count in water is an indicator of
A)
Industrial pollution done
clear
B)
Sewage contamination done
clear
C)
Hardness of water done
clear
D)
Oil pollution done
clear
View Solution play_arrow
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question_answer29)
Which of the following causes outbreak of jaundice
A)
Air pollution done
clear
B)
Water pollution done
clear
C)
Thermal pollution done
clear
D)
Soil pollution done
clear
View Solution play_arrow
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question_answer30)
Brewery and sugar factory waste alters the quality of a water body by increasing
A)
Temperature done
clear
B)
Turbidity done
clear
C)
pH done
clear
D)
COD and BOD done
clear
View Solution play_arrow
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question_answer31)
Which of the following pollutants are inevitably associated with the existence of man
A)
Sewage done
clear
B)
Industrial waste done
clear
C)
Exhaust emissions done
clear
D)
Pesticides and insecticides done
clear
View Solution play_arrow
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question_answer32)
What is EIA
A)
Ecology in America done
clear
B)
Ecological investment and accounts done
clear
C)
Ecological impact analysis done
clear
D)
Environmental impact assessment done
clear
View Solution play_arrow
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question_answer33)
Non-ionising radiations damaging to DNA are
A)
X-rays done
clear
B)
UV rays done
clear
C)
Gamma rays done
clear
D)
Beta rays done
clear
View Solution play_arrow
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question_answer34)
Which of the following is a weightless pollutant
A)
Sewage and exhaust emissions done
clear
B)
C)
Photochemical smog done
clear
D)
Heat, sound and radioactive waste done
clear
View Solution play_arrow
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question_answer35)
3, 4-benzopyrene causes
A)
Leukaemia done
clear
B)
Cytosilicosis done
clear
C)
Lung cancer done
clear
D)
Tuberculosis done
clear
View Solution play_arrow
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question_answer36)
Leukaemia is caused by
A)
Ca-40 done
clear
B)
Sr-90 done
clear
C)
Caesium done
clear
D)
Iodine done
clear
View Solution play_arrow
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question_answer37)
Problem associated with nuclear power plants is
A)
Thermal pollution done
clear
B)
Emission of hazardous radio-nuclides done
clear
C)
Disposal of radioactive waste done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer38)
Which of the following intensity of sound becomes a pollutant
A)
40 db done
clear
B)
70 db done
clear
C)
100 db done
clear
D)
200 db done
clear
View Solution play_arrow
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question_answer39)
The greatest air pollution disaster of last decade was observed in
A)
Calcutta (Bengal) done
clear
B)
Bhopal (M.P.) done
clear
C)
Ahmedabad (Gujrat) done
clear
D)
Agra (U.P.) done
clear
View Solution play_arrow
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question_answer40)
The reason of pollution is
A)
Population explosion done
clear
B)
Urbanisation done
clear
C)
Industrialisation done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer41)
Which is the most
polluted city
A)
Madras done
clear
B)
Calcutta done
clear
C)
Delhi done
clear
D)
Bombay done
clear
View Solution play_arrow
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question_answer42)
It is said, the Tajmahal may be destroyed due to [BHU 1980; CPMT 2004]
A)
Flood in Yamuna river done
clear
B)
Decomposition of marble as a result of high temperature done
clear
C)
Air pollutants released from oil refinery of Mathura done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer43)
Which of the following is a water polluting factor [CPMT 1980; MP PMT 1986, 2000; BHU 1991]
A)
Smoke done
clear
B)
Industrial waste done
clear
C)
Detergent done
clear
D)
Ammonia done
clear
View Solution play_arrow
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question_answer44)
Which of the following is normally not an atmospheric pollutant [CPMT 1981, 84; DPMT 1982, 92; MP PMT 1984, 93; CBSE PMT 1988, 92]
A)
Carbon monoxide done
clear
B)
Carbon dioxide done
clear
C)
Sulphur dioxide done
clear
D)
Hydrocarbons done
clear
View Solution play_arrow
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question_answer45)
Smog is a common pollutant in places having [DPMT 1982; CPMT 1996]
A)
High temperature done
clear
B)
Low temperature done
clear
C)
D)
Excessive ammonia in the air done
clear
View Solution play_arrow
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question_answer46)
Which of the following is a photochemical reaction product [CPMT 1982]
A)
B)
C)
D)
Fluorides done
clear
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-
question_answer47)
In a polluted lake, the index of pollution is [DPMT 1983]
A)
BOD and Daphnia done
clear
B)
DO and Artemisia done
clear
C)
Presence of frogs done
clear
D)
Diatoms larvae done
clear
View Solution play_arrow
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question_answer48)
One of the following is the chief source of water and soil pollution [NCERT 1983]
A)
Agro industry done
clear
B)
Mining done
clear
C)
Thermal power stations done
clear
D)
All of these done
clear
View Solution play_arrow
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question_answer49)
Carbon monoxide (CO) is harmful to man because [CPMT 1983]
A)
It forms carbolic acid done
clear
B)
C)
It is carcinogenic done
clear
D)
View Solution play_arrow
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question_answer50)
Which of the following is not ionising radiation [CPMT 1983]
A)
Alpha rays done
clear
B)
Beta rays done
clear
C)
Infrared rays done
clear
D)
Gamma rays done
clear
View Solution play_arrow
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question_answer51)
DDT is a [BHU 1982; DPMT 1984; CBSE PMT 1999; MP PMT 2004; AIIMS 2005]
A)
Non-biodegradable pollutant done
clear
B)
Biodegradable pollutant done
clear
C)
Antibiotics done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer52)
Some effects of sulphur dioxide and its transformation products on plants include [JIPMER 1983; MP PMT 1998; BHU 1999, 2004]
A)
Chlorophyll destruction done
clear
B)
Plasmolysis done
clear
C)
Golgi body destruction done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer53)
In a polluted lake, the index of pollution is [DPMT 1983]
A)
Daphnia done
clear
B)
Artemia done
clear
C)
Frog done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer54)
Indicator plants which can be used to indicate atmospheric pollution by SO2 are [NCERT 1983; CPMT 1989, 94]
A)
Lichens like Usnea done
clear
B)
Grassland like Deschampsia done
clear
C)
Moss like Sphagnum done
clear
D)
Climbers like Cucurbita done
clear
View Solution play_arrow
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question_answer55)
BOD stands for [AIIMS 1984; Kerala PMT 2004]
A)
Biological organism death done
clear
B)
Biochemical organic matter decay done
clear
C)
Biotic oxidation demand done
clear
D)
Biochemical oxygen demand done
clear
View Solution play_arrow
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question_answer56)
Radioactive strontium as a result of radioactive fall out, is [BHU 1984]
A)
B)
C)
D)
View Solution play_arrow
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question_answer57)
Spraying of D.D.T. on crops produces pollution of [CPMT 1984, 90; MP PMT 1995, 98]
A)
Air only done
clear
B)
Air and soil only done
clear
C)
Air, soil and water done
clear
D)
Air and water only done
clear
View Solution play_arrow
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question_answer58)
Lichens do not like to grow in cities [DPMT 1985; AFMC 2004]
A)
Because of absence of the right type of algae and fungi done
clear
B)
Because of lack of moisture done
clear
C)
D)
Because natural habitat is missin done
clear
View Solution play_arrow
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question_answer59)
Thermal pollution of water bodies is due to [DPMT 1986]
A)
Discharge of heat (hot water) from power plants done
clear
B)
Discharge of chemicals from industries done
clear
C)
Discharge of waste from mining done
clear
D)
Discharges of agricultural run off done
clear
View Solution play_arrow
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question_answer60)
Biological treatment of water pollution is done with the help of [CPMT 1986]
A)
Phytoplankton done
clear
B)
Lichens done
clear
C)
Fungi done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer61)
Major pollution causing agent is [CPMT 1986]
A)
Man done
clear
B)
Animals done
clear
C)
Hydrocarbon gases done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer62)
Effect of pollution is first and most marked on [CPMT 1988]
A)
Natural flora of a place done
clear
B)
Natural geochemical cycle done
clear
C)
Natural gaseous cycle done
clear
D)
Natural balance of our environment done
clear
View Solution play_arrow
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question_answer63)
Green house effect is due to the presence of [CBSE PMT 1989, 91; CPMT 1998, 99; AIIMS 2000]
A)
Ozone layer in the atmosphere done
clear
B)
Infrared light reaching the earth done
clear
C)
Moisture layer in the atmosphere done
clear
D)
View Solution play_arrow
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question_answer64)
A pollutant is an agent which causes change in [CPMT 1989]
A)
Balance of nature done
clear
B)
Local flora done
clear
C)
Geochemical cycles done
clear
D)
Local fauna done
clear
View Solution play_arrow
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question_answer65)
Polluted water can be purified by using [CBSE PMT 1990]
A)
Micro-organisms done
clear
B)
Algae done
clear
C)
Pesticides done
clear
D)
Fishes done
clear
View Solution play_arrow
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question_answer66)
Sewage water can be purified for recycling with the action of [CBSE PMT 1990]
A)
Aquatic plants done
clear
B)
Penicillin done
clear
C)
Micro-organisms done
clear
D)
Fishes done
clear
View Solution play_arrow
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question_answer67)
One of the most dangerous radioactive pollutant to Homo sapiens is [MP PMT 1990; CPMT 1990; CBSE PMT 1995]
A)
Strontium - 90 done
clear
B)
Phosphorus - 32 done
clear
C)
Sulphur - 35 done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer68)
Which of the following disease is caused or aggravated by pollution [MP PMT 1990]
A)
Bronchitis done
clear
B)
Rheumatism done
clear
C)
Scurvy done
clear
D)
Haemophilia done
clear
View Solution play_arrow
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question_answer69)
Generally speaking, the atmosphere in big cities is polluted most by [BHU 1990; AMU 1991]
A)
Radioactive fall out done
clear
B)
Household waste done
clear
C)
Automobile exhaust done
clear
D)
Pesticide residues done
clear
View Solution play_arrow
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question_answer70)
The excessive discharge of fertilizers into water bodies results in [MP PMT 1990]
A)
Growth of fish done
clear
B)
Death of hydrophytes done
clear
C)
Eutrophication done
clear
D)
Silt done
clear
View Solution play_arrow
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question_answer71)
Ozone layer in upper atmosphere (stratosphere) is destroyed by or which one of the chemicals is responsible for the reduction of ozone content of atmosphere [MP PMT 1990, 2002, 04; BHU 1989, 90; CPMT 1993; KCET 2000; Pb. PMT 2000]
A)
Hydrochloric acid done
clear
B)
Photochemical smog done
clear
C)
Chlorofluoro carbon (CFC) done
clear
D)
Sulphur dioxide done
clear
View Solution play_arrow
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question_answer72)
What are the chief pollutants of the atmosphere which are most likely to deplete the ozone layer [CPMT 1990; 1995; CPMT 1998]
A)
Sulphur dioxide done
clear
B)
Nitrogen oxide and fluorocarbons done
clear
C)
Carbon dioxide done
clear
D)
Carbon monoxide done
clear
View Solution play_arrow
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question_answer73)
The pollutants emitted by jet aeroplanes in outer atmosphere flourocarbons are known as [DPMT 1990; MP PMT 1998; Pb. PMT 1999; MHCET 2001]
A)
Smog done
clear
B)
Photochemical oxidants done
clear
C)
Aerosols done
clear
D)
Loess done
clear
View Solution play_arrow
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question_answer74)
Acid rain is caused due to increase in concentration of (in atmosphere) [CPMT 1991, 98; MP PMT 2002; J & K CET 2005]
A)
B)
C)
D)
View Solution play_arrow
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question_answer75)
Today the concentration of green house gases is very high because of [CPMT 1991]
A)
Use of refrigerator done
clear
B)
Increased combustion of oils and coal done
clear
C)
Deforestation done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer76)
Increase in the percentage of fauna and decrease in flora may be dangerous because it enhances [CPMT 1991]
A)
B)
Percentage of radioactive fall out done
clear
C)
D)
Persentage of diseases done
clear
View Solution play_arrow
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question_answer77)
The pollution in city like Delhi may be controlled to great extent [CPMT 1991]
A)
By proper sewage and proper exit of chemicals from factories done
clear
B)
By wide roads and factories away from the city done
clear
C)
By cleaning city and scanty use of pesticides done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer78)
Domestic waste contains [CBSE PMT 1991]
A)
Non-biodegradable pollutants done
clear
B)
Biodegradable pollutants done
clear
C)
Hydrocarbons done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer79)
Foul smell in the water of tanks, ponds etc. is due to [MP PMT 1994]
A)
Anaerobiosis done
clear
B)
Aerobiosis done
clear
C)
Biological magnification done
clear
D)
Psammophytes done
clear
View Solution play_arrow
-
question_answer80)
Measurement of the rate of
consumption in unit volume of water over a period of time is done to find out [MP PMT 1996]
A)
Biogas generation done
clear
B)
Biological oxygen demand done
clear
C)
Biosynthetic pathways done
clear
D)
Fermentation done
clear
View Solution play_arrow
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question_answer81)
Formation of ozone hole is maximum over [CBSE PMT 1997]
A)
India done
clear
B)
Antarctica done
clear
C)
Europe done
clear
D)
Africa done
clear
View Solution play_arrow
-
question_answer82)
Which one of the following organisms is used as indicator of water quality [CBSE PMT 1998, 2004; BVP 2001]
A)
Biggiata done
clear
B)
Chlorella done
clear
C)
Azospirillum done
clear
D)
Escherichia done
clear
View Solution play_arrow
-
question_answer83)
Which of the following serves as an indicator of atmospheric pollution [CBSE PMT 1992]
A)
Ferns done
clear
B)
Liverworts done
clear
C)
Hornworts done
clear
D)
Epiphytic lichens done
clear
View Solution play_arrow
-
question_answer84)
Lead (Pb) causes [CPMT 1992; MP PMT 2000]
A)
Soil pollution done
clear
B)
Air pollution done
clear
C)
Radioactive pollution done
clear
D)
All the above done
clear
View Solution play_arrow
-
question_answer85)
The stratospheric ozone depletion leads to : [AIIMS 1994]
A)
Global warming done
clear
B)
Increase in the incidence of skin cancers done
clear
C)
Forest fires done
clear
D)
All the above done
clear
View Solution play_arrow
-
question_answer86)
Which causes water pollution [MP PMT 1993]
A)
2, 4-D and pesticides done
clear
B)
Smoke done
clear
C)
Automobile exhaust done
clear
D)
Aeroplanes done
clear
View Solution play_arrow
-
question_answer87)
Pollution can be controlled by [MP PMT 1993]
A)
Sewage treatment done
clear
B)
Manufacturing electrically operated vehicles done
clear
C)
By checking atomic blasts done
clear
D)
All of the above done
clear
View Solution play_arrow
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question_answer88)
Checking of reradiating heat by atmospheric dust, water vapour, ozone, \[C{{O}_{2}}\] etc. is known as [MP PMT 1994]
A)
Green house effect done
clear
B)
Radioactive effect done
clear
C)
Ozone layer effect done
clear
D)
Solar effect done
clear
View Solution play_arrow
-
question_answer89)
Photochemical smog is related to the pollution of [MP PMT 1994]
A)
Soil done
clear
B)
Water done
clear
C)
Noise done
clear
D)
Air done
clear
View Solution play_arrow
-
question_answer90)
Eutrophication results in the reduction of [KCET 1994; CPMT 2000]
A)
Dissolved hydrogen done
clear
B)
Dissolved oxygen done
clear
C)
Mineral salts done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer91)
The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen by (approx.) [CBSE PMT 1995]
A)
200 times done
clear
B)
2 times done
clear
C)
1000 times done
clear
D)
20 times done
clear
View Solution play_arrow
-
question_answer92)
Taj Mahal is threatened due to the effect of [CBSE PMT 1995; BHU 1999; CPMT 2002]
A)
Chlorine done
clear
B)
Sulphur dioxide done
clear
C)
Oxygen done
clear
D)
Hydrogen done
clear
View Solution play_arrow
-
question_answer93)
When huge amount of sewage is dumped into a river, the BOD will [CBSE PMT 1995]
A)
Increase done
clear
B)
Remain unchanged done
clear
C)
Slightly decrease done
clear
D)
Decrease done
clear
View Solution play_arrow
-
question_answer94)
A dental disease characterized by mottling of teeth is due to presence of a certain chemical element in drinking water. Which is that element [CBSE PMT 1995]
A)
Boron done
clear
B)
Chlorine done
clear
C)
Fluorine done
clear
D)
Mercury done
clear
View Solution play_arrow
-
question_answer95)
Most harmful pollutant is [Bihar MDAT 1995]
A)
B)
C)
D)
E)
View Solution play_arrow
-
question_answer96)
Biodegradable pollutant is [EAMCET 1995; Pb. PMT 2000]
A)
Plastic done
clear
B)
Asbestos done
clear
C)
Sewage done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer97)
'Heat islands' are produced due to [EAMCET 1995]
A)
Air pollution done
clear
B)
Water pollution done
clear
C)
Land pollution done
clear
D)
All the above done
clear
View Solution play_arrow
-
question_answer98)
In big cities, air pollution is due to [CPMT 1995]
A)
Burning of fossil fuels done
clear
B)
Thermal power plant done
clear
C)
Sewage done
clear
D)
View Solution play_arrow
-
question_answer99)
In the last decades, most serious nuclear reactor accident created MIC gas tragedy in [CBSE PMT 1996; BHU 2000]
A)
Russia (1990) and Bhopal (1996) done
clear
B)
Ucraine (1986) and Bhopal (1984) done
clear
C)
Bhopal (1994) and Russia (1990) done
clear
D)
Ucraine and USA (1984) done
clear
View Solution play_arrow
-
question_answer100)
Which of the following country is responsible for releasing largest amount of green-house gases [CBSE PMT 1996, 2002; BVP 2002]
A)
Russia done
clear
B)
Germany done
clear
C)
Brazil done
clear
D)
America (USA) done
clear
View Solution play_arrow
-
question_answer101)
Fishes die by sewage because [CBSE PMT 1996]
A)
Of its bad smell done
clear
B)
It replaces food material of fishes done
clear
C)
It increases oxygen competition among fishes done
clear
D)
View Solution play_arrow
-
question_answer102)
Acid rain is due to [MP PMT 1996; Wardha 2005]
A)
Sulphur dioxide pollution done
clear
B)
Carbon monoxide pollution done
clear
C)
Pesticide pollution done
clear
D)
Dust particles done
clear
View Solution play_arrow
-
question_answer103)
Carbon monoxide is a major pollutant of [MP PMT 1996]
A)
Water done
clear
B)
Air done
clear
C)
Noise done
clear
D)
Soil done
clear
View Solution play_arrow
-
question_answer104)
Air pollution effects are usually found on [MP PMT 1997]
A)
Leaves done
clear
B)
Flowers done
clear
C)
Stems done
clear
D)
Roots done
clear
View Solution play_arrow
-
question_answer105)
Water pollution [MP PMT 1997; BHU 2002]
A)
Increases oxygenation done
clear
B)
Decreases turbidity done
clear
C)
Increases turbidity and deoxygenation done
clear
D)
Increases photosynthesis done
clear
View Solution play_arrow
-
question_answer106)
The river 'Sone' receives wastes from [MP PMT 1997]
A)
Refinery done
clear
B)
Distillery done
clear
C)
Textile mill done
clear
D)
Paper mill done
clear
View Solution play_arrow
-
question_answer107)
Oxides of sulphur and nitrogen are important pollutants of [MP PMT 1997]
A)
Air and water done
clear
B)
Air done
clear
C)
Water done
clear
D)
Soil done
clear
View Solution play_arrow
-
question_answer108)
Leaf curling is caused by [MP PMT 1997]
A)
B)
C)
D)
View Solution play_arrow
-
question_answer109)
In coming years, skin related disorders will be more common due to [CBSE PMT 1997]
A)
Pollutants in air done
clear
B)
Use of detergents done
clear
C)
Water pollution done
clear
D)
Depletion of ozone layer done
clear
View Solution play_arrow
-
question_answer110)
Phosphate pollution is caused by [CBSE PMT 1997]
A)
Phosphate rock only done
clear
B)
Agricultural fertilizers only done
clear
C)
Sewage and phosphate rock done
clear
D)
Sewage and agricultural fertilizers done
clear
View Solution play_arrow
-
question_answer111)
Most hazardous metal pollutant of automobile exhaust is [KCET 1998, 2000; MP PMT 2002; Pb. PMT 2000]
A)
Mercury done
clear
B)
Lead done
clear
C)
Cadmium done
clear
D)
Copper done
clear
View Solution play_arrow
-
question_answer112)
Photochemical smog always contains [CPMT 1998]
A)
B)
C)
D)
None of these done
clear
View Solution play_arrow
-
question_answer113)
Which important green-house gas, other than methane, is being produced from the agricultural fields [CBSE PMT 1998]
A)
Arsine done
clear
B)
Sulphur dioxide done
clear
C)
Ammonia done
clear
D)
Nitrous oxide done
clear
View Solution play_arrow
-
question_answer114)
Carbon monoxide is a pollutant because [CBSE PMT 1998]
A)
B)
It inhibits glycolysis done
clear
C)
Reacts with haemoglobin done
clear
D)
Makes nervous system inactive done
clear
View Solution play_arrow
-
question_answer115)
Noise pollution is created if noise is in excess to [Pb. PMT 1999]
A)
70-75 dB done
clear
B)
50-60 dB done
clear
C)
80-99 dB done
clear
D)
40-65 dB done
clear
View Solution play_arrow
-
question_answer116)
PAN (Peroxyacetyl nitrate) is an important constituent of photochemical smog. It is a [CBSE PMT 1999; BHU 2005]
A)
Primary pollutant done
clear
B)
Secondary pollutant done
clear
C)
Natural pollutant done
clear
D)
Corrollary pollutant done
clear
View Solution play_arrow
-
question_answer117)
Secondary pollutant which stops Hill reaction is [CBSE PMT 1999; Kerala CET 2002]
A)
Sulphuric acid done
clear
B)
Nitric acid done
clear
C)
Peroxyacetyl nitrate (PAN) done
clear
D)
Aldehydes done
clear
View Solution play_arrow
-
question_answer118)
Which of the following is the use of lichens in case of pollution [CBSE PMT 1999; Kerala PMT 2004]
A)
They treat the polluted water done
clear
B)
They act as bio indicators of pollutions done
clear
C)
They promote pollution done
clear
D)
Lichens are not related with pollution done
clear
View Solution play_arrow
-
question_answer119)
In 1984, Bhopal gas tragedy was caused due to leakage of [RPMT 1997; CBSE PMT 1999; BHU 1998, 2000; KCET 2004; MHCET 2004; Haryana PMT 2005]
A)
Sodium monoxide done
clear
B)
Sodium thiocyanate done
clear
C)
Potassium isocyanate done
clear
D)
Methyl isocyanate done
clear
View Solution play_arrow
-
question_answer120)
Green house effect refers to [CBSE PMT 1999; CPMT 2004]
A)
Cooling of earth done
clear
B)
Trapping of UV rays done
clear
C)
Production of cereals done
clear
D)
Warming of earth done
clear
View Solution play_arrow
-
question_answer121)
Which of the following is pollution related disorder [CBSE PMT 1999]
A)
Hypertension done
clear
B)
Leprosis done
clear
C)
Silicosis done
clear
D)
Pneumonicosis done
clear
View Solution play_arrow
-
question_answer122)
Which of the following organism is likely to have more concentration of D.D.T in its body [CBSE PMT 1999]
A)
Herbivores done
clear
B)
Carnivores done
clear
C)
Top carnivores done
clear
D)
Primary producers done
clear
View Solution play_arrow
-
question_answer123)
Increasing of temperature due to scattering of energy is determine by ozone,
and water vapour, is known as [Pb. PMT 1999; RPMT 1999]
A)
Radioactivity done
clear
B)
Ozone effect done
clear
C)
Solar reaction done
clear
D)
Greenhouse effect done
clear
View Solution play_arrow
-
question_answer124)
Water pollution is caused due to [Pb. PMT 1999; BHU 2001]
A)
Sewage and other wastes done
clear
B)
Industrial effluents done
clear
C)
Agricultural discharges done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer125)
Which among the following is likely to have the highest levels of D.D.T. depositions in its body [BHU 2000]
A)
Eel done
clear
B)
Crab done
clear
C)
Sea gull done
clear
D)
Phytoplankton done
clear
View Solution play_arrow
-
question_answer126)
The ultimate environmental hazard to mankind is [BHU 2000]
A)
Air pollution done
clear
B)
Water pollution done
clear
C)
Noise pollution done
clear
D)
Nuclear pollution done
clear
View Solution play_arrow
-
question_answer127)
Aerosols reduce primary productivity by [CPMT 2000]
A)
Destroying leaf tissue done
clear
B)
Premature leaf fall done
clear
C)
Reducing crop yields done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer128)
Water pollution is caused by [MP PMT 2000]
A)
Ammonia done
clear
B)
Phytoplankton done
clear
C)
Industrial effluents done
clear
D)
Smoke done
clear
View Solution play_arrow
-
question_answer129)
The most adverse effect of radioactive pollutant is [MHCET 2000]
A)
Gene mutation done
clear
B)
Hepatitis done
clear
C)
Polio done
clear
D)
T.B. done
clear
View Solution play_arrow
-
question_answer130)
The result of ozone hole is [KCET 2001]
A)
Acid rain done
clear
B)
UV radiations done
clear
C)
Global warming done
clear
D)
Green house effect done
clear
View Solution play_arrow
-
question_answer131)
Increase in the concentration of pollutants in higher trophic levels is called [BHU 2001]
A)
Recycling done
clear
B)
Eutrophication done
clear
C)
Biodegradation done
clear
D)
Biomagnification done
clear
View Solution play_arrow
-
question_answer132)
What is the intensity of sound in normal conversation [CBSE PMT 2001]
A)
10-20 dB done
clear
B)
40-60 dB done
clear
C)
90-120 dB done
clear
D)
120-150 dB done
clear
View Solution play_arrow
-
question_answer133)
Which of the following is most poisonous [CBSE PMT 2001]
A)
CO done
clear
B)
C)
C done
clear
D)
View Solution play_arrow
-
question_answer134)
The high amount of E. coli in water is the indicator of [CPMT 2001]
A)
Hardness of water done
clear
B)
Industrial pollution done
clear
C)
Sewage pollution done
clear
D)
Presence of chlorine in water done
clear
View Solution play_arrow
-
question_answer135)
Which is a degradable pollutant [MP PMT 2001]
A)
D.D.T. done
clear
B)
Aluminium foil done
clear
C)
Domestic wastes done
clear
D)
Mercury salts done
clear
View Solution play_arrow
-
question_answer136)
Which is a green house gas [MP PMT 2001]
A)
CO done
clear
B)
C)
D)
View Solution play_arrow
-
question_answer137)
Which of the following is biodegradable pollutant [MHCET 2001; Pb. PMT 2004]
A)
Sewage done
clear
B)
Plastic done
clear
C)
Polythene done
clear
D)
DDT done
clear
View Solution play_arrow
-
question_answer138)
Effect of pollution first marked on [CPMT 2002]
A)
Micro-organisms done
clear
B)
Green vegetation of an area done
clear
C)
Food crop done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer139)
Green muffler is used against which type of pollution [AIIMS 2002]
A)
Air done
clear
B)
Water done
clear
C)
Soil done
clear
D)
Noise done
clear
View Solution play_arrow
-
question_answer140)
Positive pollution of soil is due to [CBSE PMT 2002]
A)
Excessive use of fertilizers done
clear
B)
Addition of wastes on soil done
clear
C)
Reduction in soil productivity done
clear
D)
All of these done
clear
View Solution play_arrow
-
question_answer141)
CO is more toxic than \[C{{O}_{2}}\] because [MHCET 2002]
A)
It affects the nervous system done
clear
B)
It damages lungs done
clear
C)
It reduces the oxygen carrying capacity of hemoglobin done
clear
D)
It forms acid with water done
clear
View Solution play_arrow
-
question_answer142)
Acid rain is the secondary effect of [MHCET 2002]
A)
Water pollution done
clear
B)
Air pollution done
clear
C)
Soil pollution done
clear
D)
Sound pollution done
clear
View Solution play_arrow
-
question_answer143)
Which are sensitive to
pollution [MP PMT 2002; BHU 2003]
A)
Mosses done
clear
B)
Algae done
clear
C)
Lichen done
clear
D)
Ferns done
clear
View Solution play_arrow
-
question_answer144)
Main air pollutant is [MP PMT 2003]
A)
B)
C)
D)
Sulphur done
clear
View Solution play_arrow
-
question_answer145)
Effect of pollution is on [MHCET 2003]
A)
Crossing over done
clear
B)
Ecological balance done
clear
C)
Linkage done
clear
D)
Mutation done
clear
View Solution play_arrow
-
question_answer146)
A process that uses micro-organisms to convert harmful industrial wastes to less toxic or non-toxic compounds is [AIEEE 2003]
A)
Complement fixation done
clear
B)
Precipitation done
clear
C)
Bioremediation done
clear
D)
Bioconversion done
clear
View Solution play_arrow
-
question_answer147)
Gases referred to as "green house gases' are [BHU 2003; CPMT 2003]
A)
B)
Chlorofluoro carbon,
,
,
done
clear
C)
D)
Chlorofluoro carbon,
,
,
done
clear
View Solution play_arrow
-
question_answer148)
pollution affects which part of the plant [AFMC 2003]
A)
Chloroplast done
clear
B)
Mitochondria done
clear
C)
E.R. done
clear
D)
Lysosome done
clear
View Solution play_arrow
-
question_answer149)
A range of loudness of sound of 70-90 decibles is rated as [AIEEE 2003]
A)
Very loud done
clear
B)
Uncomfortable done
clear
C)
Painful done
clear
D)
quiet done
clear
View Solution play_arrow
-
question_answer150)
CFC are not recommended to be used in refrigerators because they [DPMT 2003; BVP 2004]
A)
Increase temperature done
clear
B)
Deplete ozone done
clear
C)
Affect environment done
clear
D)
Affect human body done
clear
View Solution play_arrow
-
question_answer151)
Which of the following does not occur when the sewage is discharged into water [DPMT 2003]
A)
B)
Cyanophycean blooms occur done
clear
C)
D)
Eutrophication done
clear
View Solution play_arrow
-
question_answer152)
Cadmium pollution may cause [HP PMT 2005]
A)
Minimata disease done
clear
B)
Skeletal fluorosis done
clear
C)
Black foot disease done
clear
D)
Itai-itai disease done
clear
View Solution play_arrow
-
question_answer153)
Biological Oxygen Demand (BOD) is a measure of [AIIMS 2003]
A)
Industrial wastes poured into water bodies done
clear
B)
Extent to which water is polluted with organic compounds done
clear
C)
Amount of carbon monoxide inseparably combined with haemoglobin done
clear
D)
Amount of oxygen needed by green plants during night done
clear
View Solution play_arrow
-
question_answer154)
In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant(s) is/ are [AIIMS 2003; AIEEE 2004]
A)
Suspended particulate matter (SPM) done
clear
B)
Oxides of sulphur done
clear
C)
Carbon dioxide and carbon monoxide done
clear
D)
Oxides of nitrogen done
clear
View Solution play_arrow
-
question_answer155)
The soil pollutants that affect the food chain and food web by killing micro organisms and plants are [Kerala CET 2003]
A)
Pathogens done
clear
B)
Chemical fertilisers done
clear
C)
Agricultural wastes done
clear
D)
Pesticides done
clear
View Solution play_arrow
-
question_answer156)
Chernobyl tragedy occured in [BHU 2003]
A)
26th May, 1966 done
clear
B)
26th April, 1986 done
clear
C)
6th Aug., 1947 done
clear
D)
9th May, 1945 done
clear
View Solution play_arrow
-
question_answer157)
The main cause of water pollution is [MP PMT 2003]
A)
Soap done
clear
B)
Industrial effluents done
clear
C)
Smoke done
clear
D)
Ammonia done
clear
View Solution play_arrow
-
question_answer158)
Which of the following is not a pollutant [MP PMT 2003]
A)
Hydrogen done
clear
B)
Carbon dioxide done
clear
C)
Sulphur dioxide done
clear
D)
Carbon Monooxide done
clear
View Solution play_arrow
-
question_answer159)
The pesticide used as preventive measure in buildings is [MP PMT 2003]
A)
Aldrin done
clear
B)
Dieldrin done
clear
C)
Endrin done
clear
D)
DDT done
clear
View Solution play_arrow
-
question_answer160)
Frequent occurrence of water blooms in a lake indicates [AIEEE 2003]
A)
Nutrient deficiency done
clear
B)
Oxygen deficiency done
clear
C)
Excessive nutrient availability done
clear
D)
Absence of herbivores in the lake done
clear
View Solution play_arrow
-
question_answer161)
Which of the following pollutant is released in larger quantity from the exhaust emission of a petrol/diesel automobile [BVP 2004]
A)
B)
C)
D)
Hydrocarbons done
clear
View Solution play_arrow
-
question_answer162)
The noise produced in office is normally at the level of [AIIMS 2004]
A)
20 db. done
clear
B)
30 db. done
clear
C)
40 db. done
clear
D)
60 db. done
clear
View Solution play_arrow
-
question_answer163)
Nitrogen oxides produced from the emission of automobiles and power plants, are the source of line air borne particles which lead to [AIIMS 2004]
A)
Photochemical smog done
clear
B)
Dry acid deposition done
clear
C)
Industrial smog done
clear
D)
Wet acid deposition done
clear
View Solution play_arrow
-
question_answer164)
A lake with an inflow of domestic sewage rich in organic waste may result in [AIIMS 2004]
A)
Drying of the lake very soon due to algal bloom done
clear
B)
An increase production of fish due to lot of nutrients done
clear
C)
Death of fish due to lack of oxygen done
clear
D)
Increased population of aquatic food web organisms done
clear
View Solution play_arrow
-
question_answer165)
Minamata disease was caused due to the consumption of [AIIMS 2004]
A)
Sea food containing lot of cadmium done
clear
B)
Fish contaminated with mercury done
clear
C)
Oysters with lot of pesticide done
clear
D)
Sea food contaminated with selenium done
clear
View Solution play_arrow
-
question_answer166)
Match the following and choose the correct combinations from the options given [Kerala CET 2005] Column I Column II (1) DDT (p)
,
(2) PAN (q) Smog (3) Acid rain (r) Biological magnification (4) Global warming (s)
A)
(1)-(s), (2)-(r), (3)-(q), (4)-(p) done
clear
B)
(1)-(p), (2)-(r), (3)-(q), (4)-(s) done
clear
C)
(1)-(q), (2)-(r), (3)-(s), (4)-(p) done
clear
D)
(1)-(r), (2)-(q), (3)-(s), (4)-(p) done
clear
E)
(1)-(r), (2)-(s), (3)-(p), (4)-(q) done
clear
View Solution play_arrow
-
question_answer167)
Which one of the following gases can deplete ozone layer in the upper atmosphere [BVP 2004]
A)
Ammonia done
clear
B)
Methane done
clear
C)
Carbon monoxide done
clear
D)
Sulphur dioxide done
clear
View Solution play_arrow
-
question_answer168)
Odd pollutant amongst the following is [MHCET 2004]
A)
B)
C)
D)
Acid rain done
clear
View Solution play_arrow
-
question_answer169)
The term "Bio-magnification" refers to the [Kerala PMT 2004]
A)
Growth of organism due to food consumption done
clear
B)
Increase in population size done
clear
C)
Blowing up of environmental issues by man done
clear
D)
Increase in the concentration of non-degradable pollutants as they pass through food chain done
clear
E)
Decrease in population size done
clear
View Solution play_arrow
-
question_answer170)
In 1984, the Bhopal gas tragedy took place because methyl isocyanate [CBSE PMT 2004]
A)
B)
Reacted with water done
clear
C)
Reacted with DDT done
clear
D)
Reacted with ammonia done
clear
View Solution play_arrow
-
question_answer171)
In the treatment of waste water discharge, which treatment stage involves biological treatment [BHU 2004]
A)
Primary treatment done
clear
B)
Secondary treatment done
clear
C)
Tertiary treatment done
clear
D)
Reverse osmosis stage done
clear
View Solution play_arrow
-
question_answer172)
Which of the following plant is used for the purification of water [BHU 2004]
A)
Biggiata done
clear
B)
Chlorella done
clear
C)
Spirogyra done
clear
D)
Eichhornia done
clear
View Solution play_arrow
-
question_answer173)
Which of the following metal is a water pollutant and causes sterility in human being [Pb. PMT 2004]
A)
As done
clear
B)
Mn done
clear
C)
Mg done
clear
D)
Hg done
clear
View Solution play_arrow
-
question_answer174)
Acid rain is due to the pollution by [Pb. PMT 2004]
A)
B)
C)
Dust particles done
clear
D)
Automobiles done
clear
View Solution play_arrow
-
question_answer175)
Eutrophication is caused by [MHCET 2004]
A)
Acid rain done
clear
B)
Nitrates and phosphates done
clear
C)
Sulphates and carbonates done
clear
D)
View Solution play_arrow
-
question_answer176)
Examples of regional pollution are [DPMT 2004]
A)
Acid rain done
clear
B)
Smog done
clear
C)
Both a and b done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer177)
Which of the following is responsible for depletion of ozone layer [CPMT 2005; HP PMT 2005]
A)
Dichlorophenyl trichloroethane done
clear
B)
Chlorofluorocarbons done
clear
C)
D)
Polyvinyl chloride (PVC) done
clear
View Solution play_arrow
-
question_answer178)
Which of the following strategy is not useful for global warming [AMU 2005]
A)
Use of fossil fuel in limit done
clear
B)
Increase in forest done
clear
C)
Increasing use of nitrogen fertilizers done
clear
D)
Use of other options in the place of CFC. done
clear
View Solution play_arrow
-
question_answer179)
Eutrophication can be observed in [CPMT 2005]
A)
Saline soil done
clear
B)
Desert done
clear
C)
Lake done
clear
D)
Agricultural fields done
clear
View Solution play_arrow
-
question_answer180)
Which one of the following pairs is mismatched [CBSE PMT 2005]
A)
B)
Nuclear power - radioactive wastes done
clear
C)
Solar energy - Greenhouse effect done
clear
D)
View Solution play_arrow
-
question_answer181)
Which one of the following is not used for disinfection of drinking water [CBSE PMT 2005]
A)
Chlorine done
clear
B)
Ozone done
clear
C)
Chloramine done
clear
D)
Phenyl done
clear
View Solution play_arrow
-
question_answer182)
Air quality indicator is [Bihar 2005]
A)
Lichen done
clear
B)
Moss done
clear
C)
Algae done
clear
D)
None of these done
clear
View Solution play_arrow
-
question_answer183)
The ultraviolet radiations in the stratosphere are absorbed by [J&K CET 2005]
A)
Ozone done
clear
B)
Oxygen done
clear
C)
Carbon dioxide done
clear
D)
Sulphur dioxide done
clear
View Solution play_arrow