Environmental Engineering in CE Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). 0.2 4.8 1.2 0.002 0.2 4.8 1.2 0.002 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of iron and manganese in water causes Discoloration of bathroom fixtures Reduction in its dissolved oxygen content Temporary hardness None of these Discoloration of bathroom fixtures Reduction in its dissolved oxygen content Temporary hardness None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The biological decomposition of organic substances in wastes controlled conditions is called Biological oxidation Composting Incineration None of these Biological oxidation Composting Incineration None of these 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 Automobiles exhaust Industrial chimney exhaust Burning of domestic fuel Photochemical reaction in polluted atmosphere Automobiles exhaust Industrial chimney exhaust Burning of domestic fuel Photochemical reaction in polluted atmosphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels. 120 95 75 140 120 95 75 140 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is maximum (about 500 ppm). Carbon disulphide Carbon dioxide Acetaldehyde Toluene Carbon disulphide Carbon dioxide Acetaldehyde Toluene ANSWER DOWNLOAD EXAMIANS APP
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