A. given in the direction of natural slope of ground
B. given in the direction opposite to natural slope of ground
C. zero
D. steeper than 1 in 20
A. reflux valve
B. sluice valve
C. air relief valve
D. pressure relief valve
A. sludge digestion
B. sludge disposal
C. sedimentation
D. filtration
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A. particle size is decreased
B. the surface area of tank is increased
C. the depth of tank is decreased
D. none of the above
1) presumptive coliform test
2) confirmed coliform test
3) completed coliform test
The correct answer is ?
A. only (1)
B. both (1) and (2)
C. both (1) and (3)
D. all (1), (2) and (3)