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1) Which of the following enhances BOD of water? a. Algae b. Sand c. Moss d. Sugar mill effluents
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2) Mercury pollution causes a disease: a. Methaelo binemia b. Minimata c. Foolish disease d. Hepatitis
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3) Heating of earth surface is due to: a. Air pollution b. Water pollution c. Soil pollution d. All of these
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4) Checking of re-radiating heat by atmospheric dust water vapour, ozone, CO2 is known as: a. Green house effect b. Radioactive effect c. Ozone layer effect d. Solar effect
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5) The component of a living cell affected by the pollutant SO2 is: a. Nucleus b. All cell membrane system c. Cell wall d. Plasmodesmata
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6) Some reliable indicators of air pollutants (SO2 and noxious gases) are: a. Ferns and Cycas b. Green algae and aquatic liverworts c. Lichens and mosses d. Neem' tree and Eichhornia
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7) water pollution is caused by: a. Decay of bodies of aquatic organisms b. Rain c. Growth of phytoplankton d. Industrial effluents
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8) This acts as bioindicator of air pollution: a. Alga b. Lichen c. Pinus d. Mustard e. Fern
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9) The atmospheric pollution is caused by: a. O3 b. CO c. CO2 d. N2
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10) The percentage of run off water reaching the ocean and evaporation into atmosphere is respectively: a. 27 & 73 b. 73 & 27 c. 37 & 63 d. 63 & 37
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11) Air pollution is maximum caused by: a. Sewage and industrial effluents b. Household detergents and pesticides c. Automobile exhausts and chemicals from industry d. Sewage and pesticides
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12) Sewage water can be purified for recycling with the action of: a. Aquatic plants b. Penicillin c. Micro-organisms d. Fishes
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13) Photochemical smog is related to the pollution of: a. Soil b. Water c. Noise d. Air
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14) The cause of water pollution? a. Smoke b. 2, 4-D and pesticides c. Automobile exhaust d. Aeroplanes
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15) Which of the following, when inhaled dissolves in the blood haemoglobin rapidly then O2? a. SO2 b. CO c. N2O d. O3
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16) CO is harmful to human being because: a. It decreases CO2 concentration b. It competes O2 to combine with haemoglobin c. It is carcinogenic d. It depletes O3 layer
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17) Acid rain is mainly caused by increased concentration (in atmosphere) of: a. Ozone and dust b. NH3 and SO3 c. CO and SO3 d. NO2 and SO2
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18) Ozone layer in stratosphere is effected by: a. Excess CO2 b. Excess CO c. Chloro-fluoro-carbon d. Low rainfall
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19) Which one of the following insecticides is the most persistent in soil? a. Malathion b. Aldrin c. Gamma BHC d. None of these
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20) Gases commonly referred to as 'green house gases' are: a. CH4, N2, CO2 and NH3 b. CO2, O2, NO2 and NH3 c. Chloro-fluoro-carbons, CO2, NH3 and N2 d. CO2, chloro-fluoro-carbons, CH4 and NO2
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21) Which of the following is not an important atmospheric pollutant? a. CO b. SO2 c. CO2 d. Hydrocarbons
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22) Today, concentration of green house gases is high because of: a. Use of refrigerator b. Increased combustion of oil and coal c. Deforestation d. All the above
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23) The presence of O3 in atmosphere of earth: a. Has been responsible for increasing the average global temperature in recent b. Is advantageous since it supplies O2 for people travelling in jets c. Hinders higher rate of photosynthesis d. Helps in checking the penetration of ultra violet rays to earth
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24) Identify the correctly matched pair: a. Montreal Protocol - Global warming b. Ramsar Convention - Ground water pollution c. Kyoto Protocol - Climatic change d. Basal Convention - Biodiversity Conservation
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25) What are the chief pollutants of the atmosphere which are most likely to deplete the ozone layer? a. Sulphur di-oxide b. Carbon di-oxide c. Nitrogen oxides and fluoro-carbons d. Carbon monoxide
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26) The maximum biological magnification of DDT through food web is seen in: a. Algae b. Bacteria c. Higher plants d. Man
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27) Spraying of DDT on crop produces pollution of: a. Air only b. Air and soil only c. Air, soil and water d. Air and water only
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28) DDT is a: a. Biodegradable pollutant b. Green house gas c. Non-degradable pollutant d. None of the above
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29) Exposure of plants to high fluoride concentration results in necrosis or chlorosis characteristics in: a. Petiole but not in lamina b. Only mid rib of lamina c. Leaf tip and leaf margin d. Stems tips only
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30) Ozone depletion in stratosphere shall result in: a. Forest fires b. Green house effect c. Global warming d. Increased incidence of skin cancer
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31) Most outstanding danger at present for the survival of living beings on earth is: a. Radiation hazard b. Desertification c. Deforestation d. Gleization
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32) The major cause of pollution is: a. Man b. Plants c. Animals d. Man and animals
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33) Which plant has become a troublesome weed in agricultural fields? a. Cyperus rotundus b. Eichhornia creassipes c. Parthenium hysterophorus d. Chenopodium album
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34) Polution can be controlled by: a. Sewage treatment b. Manufacturing electricity c. By checking atomic blasts d. All of the above
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35) The ultraviolet radiations from the sun cause reaction that produce: a. Carbon monoxide b. Sulphur dioxide c. Ozone d. Flourides
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36) Which major aerosol pollutant is present in jet aircraft emission? a. SO2 b. Fluoro-carbons c. CCI4 d. CO
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37) Most important causative pollutant of soil may be: a. Plastics b. Iron junks c. Detergents d. Glass junks
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38) A pollutant is any substance, chemical cycles a. The natural geo-chemical cycles b. The natural balance of our environment c. The natural flora of a place d. The natural wildlife of a region
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39) BOD of polluted water is increased by a. BOD of polluted water is increased by b. Moss c. Ferns d. Distillated wastes
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40) Which one of the following is fungicide? a. DDT b. Bordeaux mixture c. 2,4-D d. DCMU
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41) Thermal pollution in water bodies is caused due to discharge of: a. Hot water from power plants b. Hot chemicals from industries c. Waste from mines d. Waste from agricultural fields
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42) When DDT was applied in an orchard as a pesticide, the fruit production decreased. This happened because: a. DDT is a growth retardant b. DDT disturbed hormonal balance essential for fruit setting c. DDT killed the pollinating insects along with the pests d. DDT inhibited flowering
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43) Air pollution is caused by: a. Automobile exhausts b. Radioactive substances c. Smoke d. All of the above
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44) Which of the following pollutant is not the product of automobile exhaust? a. SO2 b. Fly ash c. CO d. Hydrocarbons
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45) The effect of today's radioactive fallout will probably be more harmful to children of future generations than to children now living because: a. Contamination of milk supply is not cumulative b. Infants are more susceptible to radiation c. Susceptibility to radiation increases with age d. Mutated genes are frequently recessive
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46) Minimata diseased was caused due to water pollution by: a. Lead b. Cyanides c. Methyl isocyanate d. Mercury
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47) Which of the following gases is regarded as an atmospheric pollutant? a. O2 b. O3 c. SO2 d. N2
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48) Most severe environmental hazard to mankind is due to: a. Air pollution b. Water pollution c. Noise Pollution d. Radioactive pollution
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49) It is advised not to have brick kiln near fruit orchard: a. To save the trees from erosion b. To safeguard the fruits from large labour population c. To save the trees from poisonous fumes/smoke from the brick chimneys d. To protect the orchard from the operation of trucks meant for transporting fruits
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50) Green-house effect is due to the presence of: a. Ozone layer in the atmosphere b. Infra-red radiations c. Moisture in the atmosphere d. CO2 in the atmosphere
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