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Which of the following regarding break point chlorination is wrong?

(a) It will have adequate chlorine residual

(b) It will remove manganese

(c) It will remove taste and odor

(d) It is determined by physical test

I had been asked this question during an online exam.

Asked question is from Forms of Chlorination in chapter Properties of Disinfection of Environmental Engineering

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Right answer is (d) It is determined by physical test

To explain I would say: The break point chlorination is determined by laboratory test. It is represented by instantaneous yellow color if the orthotolidine test when the orthotolidine test is applied.

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