Waste Water Engineering Traps Are used to trap the rats entering sewers Are water seals which prevent the entry of foul gases Dissolve the foul gases Create symphonic action to increase the quick disposal of sewerage Are used to trap the rats entering sewers Are water seals which prevent the entry of foul gases Dissolve the foul gases Create symphonic action to increase the quick disposal of sewerage ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For design of sewers, percentage of sewage discharge is assumed 0.85 70 to 75% 65 to 70% 75 to 80% 0.85 70 to 75% 65 to 70% 75 to 80% ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The maximum depth of sedimentation tanks, is kept 3 m 4 m 4.5 m 3.5 m 3 m 4 m 4.5 m 3.5 m 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 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.) Chemical Oxygen Demand (C.O.D.) Dissolved Oxygen (D.O.) ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A well oxidized sewage contains nitrogen mainly as Nitrates Free ammonia None of these Nitrites Nitrates Free ammonia None of these Nitrites ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Large diameter sewers subjected to external pressure alone, are reinforced Near the inner surface of the pipe Near the outer surface of the pipe Both A and B With elliptical cage Near the inner surface of the pipe Near the outer surface of the pipe Both A and B With elliptical cage ANSWER DOWNLOAD EXAMIANS APP
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