Environmental Engineering Alum as a coagulant is found to be most effective when pH range of water is 8 to 10 4 to 6 2 to 4 6 to 8 8 to 10 4 to 6 2 to 4 6 to 8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to Non carbonate hardness Total hardness total alkalinity Total hardness Total alkalinity Non carbonate hardness Total hardness total alkalinity Total hardness Total alkalinity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about 75 59 50 100 75 59 50 100 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The design discharge for the separate sewer system shall be taken as 2 × DWF 3 × DWF 6 × DWF Equal to dry weather flow (DWF) 2 × DWF 3 × DWF 6 × DWF Equal to dry weather flow (DWF) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The biochemical treatment of sewage effluents is essentially a process of Oxidation Dehydration Alkalinization Reduction Oxidation Dehydration Alkalinization Reduction ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be Combined system Partially separate system Partially combined system Separate system Combined system Partially separate system Partially combined system Separate system ANSWER DOWNLOAD EXAMIANS APP
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