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Byju's Answer
Standard VII
Chemistry
Carbonates and Bicarbonates
Bleaching pow...
Question

Bleaching powder is obtained when:


A

Slaked lime reacts with NaOH

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B

Slaked lime reacts with NaHCO3

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C

Slaked lime reacts with Cl2

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D

Slaked lime reacts with H2

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Solution

The correct option is C

Slaked lime reacts with Cl2


Bleaching powder is calcium oxychloride(CaOCl2). It is also called chloride of lime. It is manufactured by passing chlorine gas over dry slaked lime(Ca(OH)2).

Ca(OH)2+Cl2→CaOCl2+H2O


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