A. 50 to 60
B. 100 to 150
C. 500 to 600
D. 1400 to 1500
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
A. standard silica scale
B. standard cobalt scale
C. standard platinum scale
D. platinum cobalt scale
A. equal to rainfall
B. rainfall + DWF
C. rainfall + 2 DWF
D. rainfall + 6 DWF
[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.
1) scrag and removal in filters slow sand
2) back washing in slow sand filters
3) scrag and removal in filters rapid sand
4) back washing in rapid sand filters
The correct answer is
A. (1) and (2)
B. (2) and (3)
C. (1) and (4)
D. (2) and (4)