Environmental Engineering The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is 40 ppm 10 ppm 1 ppm 4 ppm 40 ppm 10 ppm 1 ppm 4 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 24 hours 1 minute 5 minutes 12 hours 24 hours 1 minute 5 minutes 12 hours ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Residual chlorine in water is determined by Orthotolidine method None of these Starch iodide method Both (A) and (B) Orthotolidine method None of these Starch iodide method Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The hydraulic mean depth (HMD) for an egg-shaped sewer flowing two-third full is Equal to HMD when flowing full Less than HMD when flowing full None of these Greater than HMD when flowing full Equal to HMD when flowing full Less than HMD when flowing full None of these Greater than HMD when flowing full ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is 4000 1,00,000 1000 4,00,000 4000 1,00,000 1000 4,00,000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In facultative stabilization pond, the sewage is treated by Aerobic bacteria only Algae only Sedimentation Dual action of aerobic bacteria and anaerobic bacteria Aerobic bacteria only Algae only Sedimentation Dual action of aerobic bacteria and anaerobic bacteria ANSWER DOWNLOAD EXAMIANS APP
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