Waste Water Engineering If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is 200 ppm None of these 250 ppm 225 ppm 200 ppm None of these 250 ppm 225 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Dried sewage after treatment is used as Base material for paints Chemical for lowering B.O.D. Fertilizer Building material Base material for paints Chemical for lowering B.O.D. Fertilizer Building material ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The detention time (t) of a settling tank, may be defined as the time required for A particle to travel from top surface to bottom sludge zone None of these The flow of sewage to fill the tank A particle to travel along its length A particle to travel from top surface to bottom sludge zone None of these The flow of sewage to fill the tank A particle to travel along its length ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering R.M.O. expenses include Running expenses All of these Maintenance expenses Operation expenses Running expenses All of these Maintenance expenses Operation expenses ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is Stone ware sewers Cast iron sewers Cement concrete sewers Glazed bricks sewers Stone ware sewers Cast iron sewers Cement concrete sewers Glazed bricks sewers ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Cement concrete sewers are only suitable if non-scouring velocity is between 4.5 to 5.5 m/sec 3.5 to 4.5 m/sec 2.5 to 3.0 m/sec 3.0 to 4.0 m/sec 4.5 to 5.5 m/sec 3.5 to 4.5 m/sec 2.5 to 3.0 m/sec 3.0 to 4.0 m/sec ANSWER DOWNLOAD EXAMIANS APP
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