Waste Water Engineering Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to First stage demand Initial demand All of these Carbonaceous demand First stage demand Initial demand All of these Carbonaceous demand ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Primary treatment of sewage consists of removal of Floating materials Oil and grease Large suspended organic solids Sand and girt Floating materials Oil and grease Large suspended organic solids Sand and girt ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Aerobic activity is maximum In sewer treatment plants At sewer pipes None of these In freshly produced sewage In sewer treatment plants At sewer pipes None of these In freshly produced sewage ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The algae dies out in the zone of Degradation Recovery Cleaner water Active decomposition Degradation Recovery Cleaner water Active decomposition ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The grit and silt of the grit chambers, may not be used for Raising low lying areas by dumping Both A and B Concreting Neither A nor B Raising low lying areas by dumping Both A and B Concreting Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The pH value of fresh sewage is usually Equal to 7 Less than 7 More than 7 Equal to zero Equal to 7 Less than 7 More than 7 Equal to zero ANSWER DOWNLOAD EXAMIANS APP
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