Environmental Engineering in CE Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes Explosion hazards Depletion of dissolved oxygen Persistent foam Fire hazards Explosion hazards Depletion of dissolved oxygen Persistent foam Fire hazards ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most practical and economical method for removal of suspended solid matter from polluted water? Sedimentation Biological oxidation Skimming off Chlorination Sedimentation Biological oxidation Skimming off Chlorination ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 50 1000 5000 2000 50 1000 5000 2000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of lead for public sewer/waste water is about __________ ppm. 150 650 25 1 150 650 25 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE BOD of raw municipal sewage may be in the range of about __________ mg/litre. 2000-3000 1-2 5-10 150-300 2000-3000 1-2 5-10 150-300 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following fine dust removal equipments is the most efficient? Bag filter Cyclone separator Scrubber Electrostatic precipitator Bag filter Cyclone separator Scrubber Electrostatic precipitator ANSWER DOWNLOAD EXAMIANS APP
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