Q101
Open questionCarcinogenic air pollutants cause
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Q102
Open questionTLV of ozone (O3) and phosgene (COCl2) in air is __________ ppm.
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Q103
Open questionParticles having diameter greater than 75 μm (micrometer = 10-6 mm) are called
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Q104
Open questionWorld's worst radioactive pollution was caused by nuclear reactor disaster which occured in
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Q105
Open questionInhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes
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Q106
Open questionThe term Biological Oxygen Demand (BOD) is used in relation to
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Q107
Open questionSuspended solid present in the waste water generated in blast furnace gas cooling and cleaning plant is removed by
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Q108
Open questionIrradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in
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Q109
Open questionMain pollutants released from petroleum refineries is
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Q110
Open questionWhich is the most practical and economical method for removal of suspended solid matter from polluted water?
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Q111
Open questionColor test of water is done with an instrument called
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Q112
Open questionPresence of __________ in water stream are deleterious to aquatic life.
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Q113
Open questionWhich of the following is not a source of ozone emission in the atmosphere?
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Q114
Open questionCarbon monoxide is a pollutant, which causes
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Q115
Open questionSolid content in most of the domestic sewage is about __________ percent.
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Q116
Open questionWhich of the following pollutants, if present in atmosphere is detectable by its odour?
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Q117
Open questionPolluted water having low BOD are most economically treated in
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Q118
Open questionTLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes
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Q119
Open questionIron & manganese present in the polluted water is removed by
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Q120
Open questionMost of the atmospheric air pollutants are present in large quantity in
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