Waste Water Engineering Aerobic bacterias Oxidise organic matter in sewage All of these Flourish in the presence of free oxygen Consume organic matter as their food Oxidise organic matter in sewage All of these Flourish in the presence of free oxygen Consume organic matter as their food ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For design of sewers, percentage of sewage discharge is assumed 65 to 70% 75 to 80% 0.85 70 to 75% 65 to 70% 75 to 80% 0.85 70 to 75% ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If D is the diameter of a circular sewer and D’ is the top horizontal diameter of an equivalent egg shaped section, the relationship which holds good, is D’ = 0.74 D D’ = 0.84 D D’ = 0.94 D D’ = 0.64 D D’ = 0.74 D D’ = 0.84 D D’ = 0.94 D D’ = 0.64 D ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Discrete or granular particles change their Size Weight None of these Shape Size Weight None of these Shape ANSWER DOWNLOAD EXAMIANS APP
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 The effluent of a septic tank is Foul and contains dissolved and suspended solids Fit for discharge into any open drain As good as that from a complete treatment None of these Foul and contains dissolved and suspended solids Fit for discharge into any open drain As good as that from a complete treatment None of these ANSWER DOWNLOAD EXAMIANS APP
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