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Social & Preventive Medicine Water 01dabb2a

Select the inappropriate statement about Chlorination of water

A
Chlorine best act at pH 7.2 of water
B
The minimum recommended concentration of free chlorine is 0.5 mg/L for one hour
C
Hypochlorous acid play main role in disinfection
D
Chloroscope instrument is used to measure residual chlorine
High-Yield Explanation
Chlorine best act at as a a disinfectant when the pH of water is7 because of predominance of Hypochlorous acid. 2.5mg bleaching powder can disinfect 1000 L of water. Chlorine has no effect on spores, cyst, ova, Hep. A, Polio virus, cyclopes. Remaining all options given are true.
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