Which of the following is present as an active ingredient in bleaching powder for bleaching action?

C a O_{2} C l

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C a O C l_{2}

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C a (O C l)_{2}

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C a C l_{2}

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Solution

The correct option is C $C a (O C l)_{2}$
Calcium hypochlorite is an inorganic compound with formula $C a (O C l)_{2}$ . It is the main active ingredient of commercial products called bleaching powder, chlorine powder, or chlorinated lime, used for water treatment and as a bleaching agent.

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

Hence, option (c) is correct.

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