In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient,______________?

Related Mcqs:

To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of_______________?

A. Hydrochloric acid B. Sulphuric acid C. Nitric acid D. Citric acid...

For detecting the nitrites in the sewage, the matching colour may be developed by adding_________________?

A. Potassium permanganate B. Sulphuric acid and napthamine C. Phenol-di -sulphuric acid potassium hydroxide D. None of these...

Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter______________________?

A. Less than 0.01 mm B. Less than 0.05 mm C. Less than 0.1 mm D. Greater than 0.1 mm...

Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to_______________?

A. Initial demand B. First stage demand C. Carbonaceous demand D. All of these...

If q is the average sewage flow from a city of population P, the maximum sewage flow______________?

A. Q = [(4 + )/(18 + )] q B. Q = [(18 + P)/(4 + )] q C. Q = [(18 + )/(4 + )] q D. Q = [(5 + )/((15 + )] q...