EXAMIANS
Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.
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Main pollutants released from petroleum refineries is
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The principal gas evolved from sludge digestion tank is
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Photochemical smog is formed from automobile exhaust
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High noise levels produced during operation of fans and compressors can be reduced by using
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Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants?
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Carbon monoxide is a pollutant, which causes
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World environment day is observed every year on the 5th of
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'Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the
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Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.
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