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 Sulphuric acid Hydrochloric acid Citric acid Nitric acid Sulphuric acid Hydrochloric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In a trickling filter Biological action is used Both A and B Neither A nor B Filtration process is used Biological action is used Both A and B Neither A nor B Filtration process is used ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Drop manholes are the manholes Having drains at different levels Without manhole covers With depths more than 3.5 m Without entry ladders Having drains at different levels Without manhole covers With depths more than 3.5 m Without entry ladders ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In sewers the velocity of flow should not be Less than the self-cleansing velocity Less than 10 m/sec More than the self-cleansing velocity More than 20 m/sec Less than the self-cleansing velocity Less than 10 m/sec More than the self-cleansing velocity More than 20 m/sec ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The algae dies out in the zone of Cleaner water Active decomposition Degradation Recovery Cleaner water Active decomposition Degradation Recovery ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The design period in years for pumping plants, is 1 2 to 3 5 to 10 3 to 5 1 2 to 3 5 to 10 3 to 5 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS