Waste Water Engineering In trickling filter, B.O.D. is reduced to 60 to 80% 40 to 60% 80 to 90% 30 to 40% 60 to 80% 40 to 60% 80 to 90% 30 to 40% ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is None of these 1 in 100 1 in 60 1 in 120 None of these 1 in 100 1 in 60 1 in 120 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the pH value of sewage is 7 It is alkaline None of these It is acidic It is neutral It is alkaline None of these It is acidic It is neutral ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of Recovery Active decomposition Cleaner water Degradation Recovery Active decomposition Cleaner water Degradation ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The suitable cross-section of sewers to carry combined flow, is Horse shoe shaped Egg shaped Circular Rectangular Horse shoe shaped Egg shaped Circular Rectangular ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Pick up the incorrect statement from the following for allowing workers to enter sewers The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes Proper tests for the presence of poisonous gases must be carried out The men entering the manhole should be advised to smoke in the sewer Warning signals should be erected The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes Proper tests for the presence of poisonous gases must be carried out The men entering the manhole should be advised to smoke in the sewer Warning signals should be erected ANSWER DOWNLOAD EXAMIANS APP
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