Environmental Engineering in CE Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes Persistent foam Explosion hazards Fire hazards Depletion of dissolved oxygen Persistent foam Explosion hazards Fire hazards Depletion of dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foul odour and bad taste of water is removed by treating with Alum Activated carbon Copper sulphate Bleaching powder Alum Activated carbon Copper sulphate Bleaching powder ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Infective bacteria in water is killed by the __________ process. Disinfection Sterilisation None of these Aeration Disinfection Sterilisation None of these Aeration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 50 5000 1000 2000 50 5000 1000 2000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m³.(μg-microgram) 750 800 90 10 750 800 90 10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Radioactive solid nuclear wastes are disposed off by Underground burial in concrete containers High temperature incineration Pathological incineration Pyrolysis Underground burial in concrete containers High temperature incineration Pathological incineration Pyrolysis ANSWER DOWNLOAD EXAMIANS APP
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