Waste Water Engineering To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of Hydrochloric acid Nitric acid Citric acid Sulphuric acid Hydrochloric acid Nitric acid Citric acid Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The detention time of a circular tank of diameter d and water depth H, for receiving the sewage Q per hour, is d (0.785d + 0.011H)/Q d (0.022d + 0.085H)/Q d² (0.011d + 0.785H)/Q d (0.285d + 0.011H)/Q d (0.785d + 0.011H)/Q d (0.022d + 0.085H)/Q d² (0.011d + 0.785H)/Q d (0.285d + 0.011H)/Q ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient, Is doubled Is trebled Is not enough Is only provided Is doubled Is trebled Is not enough Is only provided ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the grit in grit chambers is 4.5 million litres per day, its cleaning is done Mechanically Hydraulically Manually Electrically Mechanically Hydraulically Manually Electrically ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Ventilating shafts are provided to a sewer line at every 100 m 200 m 150 m 300 m 100 m 200 m 150 m 300 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The minimum recommended diameter of sewers, is 10 cm 20 cm 5 cm 15 cm 10 cm 20 cm 5 cm 15 cm ANSWER DOWNLOAD EXAMIANS APP
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