Correct answer
B. [(100 + P1)/(100 – P2)] V1
Explanation
The correct answer is [(100 + P1)/(100 – P2)] V1.
3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is________?
The self cleansing velocity for all sewers in India is usually________?
In detennining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than________?
In soils having same values of plasticity index, if liquid limit is increased, then________?
The following item of earth work is not measured separately?
Coefficient of discharge of an ogee spillway________?