Waste Water Engineering If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is 1 in 120 None of these 1 in 100 1 in 60 1 in 120 None of these 1 in 100 1 in 60 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Aerobic activity is maximum None of these At sewer pipes In sewer treatment plants In freshly produced sewage None of these At sewer pipes In sewer treatment plants In freshly produced sewage ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The laying of sewers is done with Theodolite Level Magnetic compass Clinometer Theodolite Level Magnetic compass Clinometer ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Aerobic bacterias Oxidise organic matter in sewage Consume organic matter as their food All of these Flourish in the presence of free oxygen Oxidise organic matter in sewage Consume organic matter as their food All of these Flourish in the presence of free oxygen ANSWER DOWNLOAD EXAMIANS APP
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 50 mg/l 250 mg/l 150 mg/l 100 mg/l 50 mg/l 250 mg/l 150 mg/l 100 mg/l ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of Active decomposition Cleaner water Degradation Recovery Active decomposition Cleaner water Degradation Recovery ANSWER DOWNLOAD EXAMIANS APP
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