Waste Water Engineering To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of Sulphuric acid Hydrochloric acid Nitric acid Citric acid Sulphuric acid Hydrochloric acid Nitric acid Citric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The non-clog pump which permits solid matter to pass out with the liquid sewage, is Centrifugal pump None of these Pneumatic ejector Reciprocating pump Centrifugal pump None of these Pneumatic ejector Reciprocating pump ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering At the junction of sewers Tops of both the sewers are at the same level Top of smaller sewer is kept lower None of these Top of larger sewer is kept lower Tops of both the sewers are at the same level Top of smaller sewer is kept lower None of these Top of larger sewer is kept lower ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Clogging of sewers, is caused due to Low discharge Greasy and oily matters All of these Silting Low discharge Greasy and oily matters All of these Silting ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Inter-distance between ventilation columns in a sewer line is kept 150 m to 300 m 25 to 50 m 100 m to 150 m 50 m to 100 m 150 m to 300 m 25 to 50 m 100 m to 150 m 50 m to 100 m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to Carbonaceous demand Initial demand All of these First stage demand Carbonaceous demand Initial demand All of these First stage demand ANSWER DOWNLOAD EXAMIANS APP
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