The reaction of $C l_{2}$ with X gives bleaching powder. X is :

C a O

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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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Solution

The correct option is C $C a (O H)_{2}$
Calcium hypochlorite is a compound with formula $C a (C l O)_{2}$ . As a mixture with lime and calcium chloride, it is marketed as chlorine powder or bleach powder for water treatment and as a bleaching agent.
Calcium hypochlorite is produced industrially by treating lime( $C a (O H)_{2}$ ) with chlorine gas.
$2 C l_{2} + 2 C a (O H)_{2} \to C a (O C l)_{2} + C a C l_{2} + 2 H_{2} O$
Hence option B is correct.

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The reaction of Cl2 with X gives bleaching powder. X is :

The reaction of $C l_{2}$ with X gives bleaching powder. X is :