Search
.Management Sciences
Category: Waste Water Engineering
The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called_______________?
0
A. A heap
B. Plateau
C. Windrow
D. None of these
Assertion A.: The determination of pH value of sewerage is important. Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value________________?
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true
Fresh sewage may become stale in_________________?
A. One hour
B. Two to three hours
C. Three to four hours
D. Six hours
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
The most effective arrangement for diverting excess storm water into a natural drainage, is____________________?
A. Leaping weir
B. Overflow weir
C. Siphon spill way
D. None of these
Recent Comments