Waste Water Engineering If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains Carbon dioxide Oxygen Methane Hydrogen sulphide Carbon dioxide Oxygen Methane Hydrogen sulphide 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 Sulphuric acid Nitric acid Citric acid Hydrochloric acid Sulphuric acid Nitric acid Citric acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the peak discharge of a storm water drain (S.W. Drain) is expected to exceed 150 cumecs, the free board to be provided, is 90 cm 80 cm 50 cm 100 cm 90 cm 80 cm 50 cm 100 cm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Imhoff cone is used to determine Dissolved solids Suspended solids None of these Settleable solids Dissolved solids Suspended solids None of these Settleable solids ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In very first stage of decomposition of the organic matter in sewage Nitrates are formed Nitrites are formed Ammonia is formed Carbondioxide is formed Nitrates are formed Nitrites are formed Ammonia is formed Carbondioxide is formed ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Hume steel pipes are Both B and C Steel pipes Steel shell coated from inside with cement mortar Steel shell coated from outside with cement mortar Both B and C Steel pipes Steel shell coated from inside with cement mortar Steel shell coated from outside with cement mortar ANSWER DOWNLOAD EXAMIANS APP
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