Waste Water Engineering Pick up the incorrect statement from the following for allowing workers to enter sewers The men entering the manhole should be advised to smoke in the sewer Proper tests for the presence of poisonous gases must be carried out The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes Warning signals should be erected The men entering the manhole should be advised to smoke in the sewer Proper tests for the presence of poisonous gases must be carried out The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes Warning signals should be erected ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known Chemical Oxygen Demand (C.O.D.) Dissolved Oxygen (D.O.) None of these Bio-Chemical Oxygen Demand (B.O.D.) Chemical Oxygen Demand (C.O.D.) Dissolved Oxygen (D.O.) None of these Bio-Chemical Oxygen Demand (B.O.D.) ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is 15 cm 18 cm 12 cm 10 cm 15 cm 18 cm 12 cm 10 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Traps Are water seals which prevent the entry of foul gases Create symphonic action to increase the quick disposal of sewerage Are used to trap the rats entering sewers Dissolve the foul gases Are water seals which prevent the entry of foul gases Create symphonic action to increase the quick disposal of sewerage Are used to trap the rats entering sewers Dissolve the foul gases ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is 2.55 2.25 2.65 2.5 2.55 2.25 2.65 2.5 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
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