Bleaching powder does not contain

C a (O H)_{2}

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C a (O C l)_{2}

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C a (C l O_{3})_{2}

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C a C l_{2}

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Solution

The correct option is C $C a (C l O_{3})_{2}$
Bleaching powder is a mixture of calcium hypochlorite, $C a (O C l)_{2}$ and the basic chloride $C a C l_{2} . H_{2} O$ with some slaked lime, $C a (O H)_{2}$ .

$3 C a (O H)_{2} + C l_{2} B e l o w 35^{o} C - ------ \to C a (O C l)_{2} . C a C l_{2} . C a (O H)_{2} . H_{2} O B l e a c h i n g p o w d e r + H_{2} O$

Hence, option (d) is correct.

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