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Which of the following is most effective in the killing of bacteria present in water?

(a) Nascent oxygen

(b) Chlorine

(c) HOBr

(d) I2

I had been asked this question in homework.

I would like to ask this question from Iodine, Bromine and Ozone Treatment in portion Properties of Disinfection of Environmental Engineering

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Best answer
The correct choice is (a) Nascent oxygen

Explanation: Nascent oxygen is very effective in oxidizing the organic matter and in the killing of bacteria present in the water which is formed during the breakdown of ozone.

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