The detention period for plain sedimentation water tanks, is usually____________________?

Related Mcqs:

The asbestos cement sewers are_________________?

A. Light in weight B. Not structurally strong to bear large compressive stress C. Susceptible to corrosion by sulphuric acid D. All the above...

If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is_________________?

A. 100 mg/l B. 200 mg/l C. 300 mg/l D. 400 mg/l...

The first stage of neutral process of sludge digestion, is__________________?

A. Acid fermentation B. Acid regressio C. Alkaline fermentation D. None of these...

In sewage, the solids in mg per litre is__________________?

A. 100 to 500 B. 500 to 1000 C. 1000 to 1500 D. 1500 to 2000...

The sewage is pumped up_______________?

A. From low lying areas B. From flat areas C. From basements D. All the above...