Normal dosage of chlorine in public water supply scheme ranges from __________ ppm.
Question: Normal dosage of chlorine in public water supply scheme ranges from __________ ppm.
[A].
0.5 to 1
10 to 15
300 to 500
1000 to 1500
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.