Waste Water Engineering To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of Citric acid Hydrochloric acid Nitric acid Sulphuric acid Citric acid Hydrochloric acid Nitric acid Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In olden days the type of section adopted in trunk and out fall sewers was Horse shoe shaped Egg shaped Parabolic shaped Circular shaped Horse shoe shaped Egg shaped Parabolic shaped Circular shaped ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Which one of the following resists hydrogen sulphide corrosion? Asbestos cement R.C.C. Glazed stone wares Glazed ware Asbestos cement R.C.C. Glazed stone wares Glazed ware ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is 0.40 m/sec 0.35 m/sec 0.30 m/sec 0.45 m/sec 0.40 m/sec 0.35 m/sec 0.30 m/sec 0.45 m/sec 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 Pneumatic ejector None of these Reciprocating pump Centrifugal pump Pneumatic ejector None of these Reciprocating pump ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The spacing of bars of perforations of fine screens used for the treatment of sewage, is 2 to 3 mm 8 to 10 mm 5 to 8 mm 3 to 5 mm 2 to 3 mm 8 to 10 mm 5 to 8 mm 3 to 5 mm ANSWER DOWNLOAD EXAMIANS APP
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