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Chlorine dissolves in water to give

A $HCl$ and $HClO X_{3}$
B $HOCl$ and $HClO X_{4}$
C $HCl$ and $O X_{2}$ only
D $HCl$ and $HOCl$

Answer: D

Cl X_{2} + H X_{2} O HCl + HOCl

. This is a disproportionation. The hypochlorous acid gives nascent oxygen, which causes bleaching.

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