When bleaching powder undergoes auto-oxidation, the change in oxidation state is:

+ 1 t o + 5

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- 1 t o 0

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+ 1 t o + 3

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- 1 t o + 3

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Solution

The correct option is A $+ 1 t o + 5$
$6 C a (O C l)_{2} \to 6 C a (C l O_{3})_{2} + 5 C a C l_{2}$

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