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The water after removing of sludge in the biological oxidation process is treated with ____________(a) Chlorine(b) Bromine(c) Fluorine(d) IodineI 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

Answer» 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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