Question 7010 of 229 · California Water Distribution Operator Exam
A water sample has a chlorine demand of 1.8 mg/L and the operator wants a free chlorine residual of 0.5 mg/L. What dose is required?
Exactly one answer is correct.
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Correct answer to question 7010
- B: 2.3 mg/L
Explanation
Dose = demand + residual = 1.8 + 0.5 = 2.3 mg/L. Subtracting instead of adding gives 1.3 mg/L.
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