Waste Water Engineering With self cleansing velocity in sewers Silting occurs at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Both silting and scouring occur at bottom Silting occurs at bottom Scouring occurs at bottom Neither silting nor scouring occurs at bottom Both silting and scouring occur at bottom ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is 208 cu.m 212 cu.m 216 cu.m 204 cu.m 208 cu.m 212 cu.m 216 cu.m 204 cu.m ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Which one of the following statements regarding septic tanks is wrong? The depth of tank is kept equal to its width The minimum width of septic level is 90 cm A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided The outlet invert level is kept 5 to 7.5 cm below the inlet invert level The depth of tank is kept equal to its width The minimum width of septic level is 90 cm A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided The outlet invert level is kept 5 to 7.5 cm below the inlet invert level ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The most efficient cross section of sewers in a separate sewerage system is Rectangular Parabolic New egged Circular Rectangular Parabolic New egged Circular ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The presence of free ammonia in sewage, is detected by Adding sulphuric acid Adding potassium permanganate Boiling Phenol-di-sulphuric acid Adding sulphuric acid Adding potassium permanganate Boiling Phenol-di-sulphuric acid 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 Nitric acid Citric acid Sulphuric acid Hydrochloric acid Nitric acid Citric acid Sulphuric acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
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