A. ultra violet rays treatment
B. lime treatment
C. by using potassium permanganate
D. chlorination
A. the time taken by rainfall water to run from most distant point of water shed to the inlet of sewer
B. the time required for flow of water in sewer to the point under consideration
C. sum of (A) and (B)
D. difference of (A) and (B)
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
1) involves successive trials
2) takes economic aspects into account
3) is time consuming
The correct answer is?
A. only (1)
B. (1)and(2)
C. (1) and (3)
D. all are correct
A. sodium sulphate
B. copper sulphate
C. sodium chloride
D. calcium chloride
A. reducing the excessive flow in sewers
B. disposing of sludge
C. increasing the capacity of storage re-servoirs
D. increasing flow of sewage through imhoff tanks