Waste Water Engineering The screens are fixed Parallel to the direction of flow At an angle 30° to 60° to the direction of flow None of these Perpendicular to the direction of flow Parallel to the direction of flow At an angle 30° to 60° to the direction of flow None of these Perpendicular to the direction of flow ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is 1 in 60 None of these 1 in 100 1 in 120 1 in 60 None of these 1 in 100 1 in 120 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewer which received discharge from two or more main sewers, is known as A trunk sewer A main sewer An intercepting sewer An outfall sewer A trunk sewer A main sewer An intercepting sewer An outfall sewer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In trickling filter, B.O.D. is reduced to 40 to 60% 30 to 40% 80 to 90% 60 to 80% 40 to 60% 30 to 40% 80 to 90% 60 to 80% ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The presence of free ammonia in sewage, is detected by Boiling Adding sulphuric acid Adding potassium permanganate Phenol-di-sulphuric acid Boiling Adding sulphuric acid Adding potassium permanganate Phenol-di-sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Sewer ventilating columns are generally placed at Every change in the size of sewers All listed here Upper ends of branch sewers Distances 150 m to 300 m Every change in the size of sewers All listed here Upper ends of branch sewers Distances 150 m to 300 m ANSWER DOWNLOAD EXAMIANS APP
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