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which-of-the-following-compounds-used-for-disinfection-of-water-is-not-stable-but-is-prepared-in-situ

Question

Which of the following compounds used for disinfection of water is not stable but is prepared in situ ?

A Cl2

B Ca(OCl)2

C NaOCl

D HOCl

Answer & Explanation
Answer:HOCl

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