Environmental Engineering in CE Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur? Stratosphere Troposphere None of these Thermosphere Stratosphere Troposphere None of these Thermosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. 5 50 500 1 5 50 500 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of mercury in potable (drinking) water is about __________ ppm. 0.001 5 0.1 1 0.001 5 0.1 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water treatment plant, zeolite process is used to remove the __________ of water. Iron & zinc Hardness Alkalinity Acidity Iron & zinc Hardness Alkalinity Acidity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level during normal conversation among men is about __________ decibles. 45 90 115 10 45 90 115 10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes Explosion hazards Persistent foam Fire hazards Depletion of dissolved oxygen Explosion hazards Persistent foam Fire hazards Depletion of dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
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