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The water after removing of sludge in the biological oxidation process is treated with ____________

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in Applied Chemistry by (101k points)
The water after removing of sludge in the biological oxidation process is treated with ____________

(a) Chlorine

(b) Bromine

(c) Fluorine

(d) Iodine

I had been asked this question by my school principal while I was bunking the class.

The origin of the question is Biological Oxidation Process in section Water of Applied Chemistry

1 Answer

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Correct option is (a) Chlorine

The best I can explain: The water after removing of sludge in the biological oxidation process is treated with the chlorine or bleaching powder to make it more safe and let it into surface water.

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