Waste Water Engineering If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is 200 mg/l 300 mg/l 100 mg/l 400 mg/l 200 mg/l 300 mg/l 100 mg/l 400 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by Kutter Crimp and Bruges Bazin William-Hazen Kutter Crimp and Bruges Bazin William-Hazen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The small sewers are cleaned by Wooden pills Cane rodding None of these Flushing Wooden pills Cane rodding None of these Flushing ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A safety lamp when inserted in the upper portion of a manhole causes flames. It indicates the presence of Petrol vapours Methane gas Carbondioxide gas Hydrogen sulphide gas Petrol vapours Methane gas Carbondioxide gas Hydrogen sulphide gas ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering ‘Cowl’ is provided at Upper end of ventilating column Lower end of ventilating column Upper end of the manhole First step in manhole Upper end of ventilating column Lower end of ventilating column Upper end of the manhole First step in manhole ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A drop manhole is provided if A branch sewer joins the main sewer at higher level None of these A sewer drops from a height A lamp is inserted to check obstruction A branch sewer joins the main sewer at higher level None of these A sewer drops from a height A lamp is inserted to check obstruction ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS