Waste Water Engineering Facultative bacteria survive in Both cases A and B The presence of oxygen Neither A nor B The absence of oxygen Both cases A and B The presence of oxygen Neither A nor B The absence of oxygen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The gas which may cause explosion in sewers, is Carbon monoxide Ammonia Carbondioxide Methane Carbon monoxide Ammonia Carbondioxide Methane ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 50 ppm 100 ppm 150 ppm 200 ppm 50 ppm 100 ppm 150 ppm 200 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The first stage of neutral process of sludge digestion, is None of these Acid regression Alkaline fermentation Acid fermentation None of these Acid regression Alkaline fermentation Acid fermentation ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains Methane Hydrogen sulphide Carbon dioxide Oxygen Methane Hydrogen sulphide Carbon dioxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by Chezy Bazin Kutter Manning Chezy Bazin Kutter Manning ANSWER DOWNLOAD EXAMIANS APP
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