Waste Water Engineering If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is 100 mg/l 150 mg/l 250 mg/l 50 mg/l 100 mg/l 150 mg/l 250 mg/l 50 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Aerobic bacterias Consume organic matter as their food Oxidise organic matter in sewage All of these Flourish in the presence of free oxygen Consume organic matter as their food Oxidise organic matter in sewage All of these Flourish in the presence of free oxygen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is 1.095 1.085 1.065 1.075 1.095 1.085 1.065 1.075 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewage treatment in septic tanks is due to Aerobic decomposition Anaerobic decomposition Parasitic decomposition None of these Aerobic decomposition Anaerobic decomposition Parasitic decomposition None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the pH value of sewage is 7 It is neutral It is acidic None of these It is alkaline It is neutral It is acidic None of these It is alkaline ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The stone ware sewers All listed here Are manufactured from clays and shale Are used for carrying sewage and drainage from houses After casting are dried and burnt at temperature 150°C, 700°C and 1200°C All listed here Are manufactured from clays and shale Are used for carrying sewage and drainage from houses After casting are dried and burnt at temperature 150°C, 700°C and 1200°C ANSWER DOWNLOAD EXAMIANS APP