Question 1025 of 229 · California Water Distribution Operator Exam
On the chlorine dose curve, what is the breakpoint?
Exactly one answer is correct.
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Correct answer to question 1025
- C: The dose where ammonia is used up and free chlorine begins to rise
Explanation
Up to the hump, chloramines form. Beyond the dip, additional chlorine stays as free chlorine, which is why breakpoint chlorination makes a free residual.
More questions: Disinfection
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