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1) Tajmahal is threatened due to the presence of: a. Chlorine/NO2 b. SO2 c. Oxygen/ozone d. Hydrocarbons
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2) Whn excess of sewage is dumped in the river, its BOD: a. Increases b. Slightly decreases c. Remains unchanged d. Decreases drastically
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3) The most harmful component of detergents causing water pollution is: a. Linear alkyl sulphonate b. Sulphates and phosphate c. Alkyl benzenes sulphonate d. None of these
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4) The abbreviation MPN stand for: a. Most probable number b. Millions per night c. Millennium of probable number d. None of these
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5) The ground water pollution is due to excess of: a. DDT is a growth retardant b. Pesticides c. Minerals d. Carbon deposit
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6) Indiscriminate use of fertilizers have lead to: a. Air pollution b. Soil pollution c. Water pollution d. All of the above
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7) Which of the following is not used for disinfection of drinking water? a. Chlorine b. Chloramines c. Phenyl d. Ozone
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8) Which of the following is a biodegradable pollutant? a. Sewage b. Asbestos c. Plastic d. All of these
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9) A very harmful fibrous component causing pollution an inflicting diseases of lungs in human beings: a. Grease b. Asbestos c. Eichhornia roots d. ABS micelle
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10) With the increase in water pollution, the BOD: a. Decreases b. Increases c. Remains the same d. Is no measure of pollution
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11) The enrichment of water by nutrients is: a. Mineralization b. Oligotrophication c. Eutrophication d. All of these
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12) Which of the following is not a commonly used pesticide? a. Aldrin b. Lindane c. Chlordane d. Chloremphenicol
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13) The most harmful pesticide is: a. PAN b. 2,4,5-T c. 2,4-D d. DDT
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14) In the polluted water, the values of: 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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15) COD stands for: a. Caesium oxide deposition b. Control of diesel c. Chemistry of depositions d. Chemical oxygen demand
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16) The Escherichia cells in a human excreta number in: a. Thousands b. Hundreds c. Billion d. Millions
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17) Prolonged liberal irrigation of agricultural fields is likely to create the problem of: a. Acidity b. Metal toxicity c. Aridity d. Salinity
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18) Pollution is: a. Always an unfavourble alteration b. Always a favourable change c. Rarely a favoruable alteration d. Usually an unfavourable change
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19) Which of the following is generally used for induced mutagenesis in crop plants? a. Gamma rays (from cobalt 60) b. X-rays c. UV (260 nm) d. Alpha particles
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20) The percentage of water found in oceans is: a. 89% b. 93% c. 97% d. 86%
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21) Greenhouse effect refers to: a. Production of cereals b. Trapping of UV rays c. Cooling of earth d. Warming of earth
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22) PAN stands for: a. Peroxy acetyl nitrate b. Peroxy acyl nitrite c. Pyridine aceto-nitrite d. Peroxy aceto-nitrile
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23) 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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24) Which of the following air pollutant is carcinogenic? a. Ethylene b. 3.4 Benzpyrene c. N2O d. PAN
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25) The pollutants like phenol, Na and Hg can be removed from water by technique/s such as: a. Reverse osmosis b. Electrodialysis c. Both (a) & (b) d. None of these
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26) The CFC pollution sources include: a. Jet air crafts only b. Fire extinguishers and jet air crafts c. Refrigerators and jet air crafts d. All of these
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27) The lowest temperature in the atmosphere is recorded at: a. Mesopause b. Tropopause c. Stratopause d. All of these
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28) Atmospheric pollution is also caused by the gas: a. Phosphene b. Nitrogen c. Hydrogen d. Nerve gas VX
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29) The photochemical smog is also called: a. Los Angeles type smog b. New York type smog c. Tokyo type smog d. California type smog
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30) The classical smog mainly contains: a. Hydrocarbons only b. Hydrocarbons and SO2 c. Hydrocarbons and N2O d. Particulate matter and SO2
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31) The automobile emission can be reduced by adding the following in the petrol: a. Calcium salts b. Cobalt salts c. Silicon oil d. Barium salts
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32) The photochemical smog appears: a. In the mid day b. At night c. In early morning d. At evening
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33) The river Periyar gets pollution mainly from: a. Tanneries b. Paper factories c. Chemical factories d. Sugar mills
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34) The PAN blocks: a. Glycolysis b. ATP synthesis c. CO2 fixation d. Hill reaction
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35) The minimata disease was first detected in: a. USA/Korea b. Russia c. China d. Japan
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36) The plants of tobacco and tomato are sensitive to: a. Ozone b. N2O c. Ethylene d. PAN
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37) The zone of atmosphere that lies near the ground is: a. Troposphere b. Stratosphere c. Homosphere d. Heterosphere
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38) It is thought that the concentration of CO2 in the year 1890 was around: a. 245 ppm b. 275 ppm c. 215 ppm d. 230 ppm
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39) The atomspheric UV radiations are absorbed in the zone called: a. Troposphere b. Stratosphere c. Mesosphere d. Thermosphere
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40) It is thought that the concentration of CO2 by the year 2040 shall reach: a. 400 ppm b. 500 ppm c. 475 ppm d. 450 ppm
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41) The classical smog was first observed in the year: a. 1885 b. 1895 c. 1905 d. 1910
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42) The term 'Bio-magnification' refers to the: a. Growth of organism due to food consumption b. Increase in population size c. Blowing up of environmental issues by man d. Increase in the concentration of non-degradable pollutants as they pass through food chain e. Decrease in population size
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43) The photochemical smog was first seen in the year: a. 1933 b. 1943 c. 1953 d. 1953
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44) The soil pollution is caused as the industrial furnaces throw: a. CFC, CH4 and SO2 b. Sulphates of Na, Ca and Fe c. Fly ash d. All of these
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45) Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to: a. Photochemical smog b. Dry acid deposition c. Industrial smog d. Wet acid deposition
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46) The beauty of Taj Mahal is endangered due to: a. Degradation of marble due to high temperature b. Air pollution released from oil refinery c. Riparian erosion d. Discharge of industrial waste in Yamuna river
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47) Sonic booms' refer to: a. Shock waves b. Noise of traffic c. Noise of siren d. Unhearable sound
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48) The 'blue baby syndrome' is caused due to pollution by: a. Chlorides b. Cyanides c. Fluorides d. Nitrates
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49) Keeping the frequency of nuclear tests, it is estimated that on an average the five nuclear powers conducted nuclear tests at the rate of: a. One test every 20th day b. One test every 13th day c. One test every 11th day d. One test every 9th day
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50) Whiich of the following plants shows insecticidal properties a. Riccinus communis b. Iberis amara c. Cynodon dactylon d. All of these
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