Environmental Engineering in CE Pick out the one which is not a chemical coagulant. Ferrous sulphate Chloramine Hydrated lime Aluminium sulphate Ferrous sulphate Chloramine Hydrated lime Aluminium sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Death may occur, when SO₂ concentration in atmospheric air exceeds __________ ppm. 400 200 100 20 400 200 100 20 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 Depletion of dissolved oxygen Persistent foam Fire hazards Explosion hazards Depletion of dissolved oxygen Persistent foam Fire hazards Explosion hazards ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise pollution level in a chemical plant is expressed in None of these Hertz Decibel Roentgen None of these Hertz Decibel Roentgen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria. Anaerobic Aerobic Parasitic Saphrophytic Anaerobic Aerobic Parasitic Saphrophytic ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE '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 Photochemical reaction in polluted atmosphere Burning of domestic fuel Industrial chimney exhaust Automobiles exhaust Photochemical reaction in polluted atmosphere Burning of domestic fuel Industrial chimney exhaust Automobiles exhaust ANSWER DOWNLOAD EXAMIANS APP
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