Waste Water Engineering Pick up the incorrect statement from the following for allowing workers to enter sewers The men entering the manhole should be advised to smoke in the sewer Warning signals should be erected The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes Proper tests for the presence of poisonous gases must be carried out The men entering the manhole should be advised to smoke in the sewer Warning signals should be erected The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 minutes Proper tests for the presence of poisonous gases must be carried out ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In septic tanks, All listed here The clear space between the baffle top and covering slab is about 7.5 cm Free board of 0.3 m may be provided The baffles or tees are extended up to top level of scum All listed here The clear space between the baffle top and covering slab is about 7.5 cm Free board of 0.3 m may be provided The baffles or tees are extended up to top level of scum ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The asbestos cement pipes are generally laid Vertically Horizontally At an angle of 60° At an angle of 30° Vertically Horizontally At an angle of 60° At an angle of 30° ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The pH value of sewage is determined with the help of Turbid meter Potentiometer None of these Imhoff Cone Turbid meter Potentiometer None of these Imhoff Cone ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering During preliminary treatment of a sewage All listed here Floating materials are removed by screening Oil and grease are removed from skimming tanks Girt and sand are removed by girt chambers All listed here Floating materials are removed by screening Oil and grease are removed from skimming tanks Girt and sand are removed by girt chambers 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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