Waste Water Engineering The most efficient cross-section of sewers in a combined sewerage system is Rectangular Circular New egged Parabolic Rectangular Circular New egged Parabolic ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is 3 2 4 1.5 3 2 4 1.5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Lead acetate test in sewer manhole is done to test the presence of Carbondioxide gas Methane gas Diesel vapours Hydrogen sulphide Carbondioxide gas Methane gas Diesel vapours Hydrogen sulphide ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is 1 in 120 1 in 100 1 in 60 None of these 1 in 120 1 in 100 1 in 60 None of these ANSWER DOWNLOAD EXAMIANS APP
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 Nitric acid Hydrochloric acid Sulphuric acid Citric acid Nitric acid Hydrochloric acid Sulphuric acid 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 Carbondioxide gas Petrol vapours Methane gas Hydrogen sulphide gas Carbondioxide gas Petrol vapours Methane gas Hydrogen sulphide gas ANSWER DOWNLOAD EXAMIANS APP
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