1.

Bleaching powder is obtained by the action of Cl_(2) on :

Answer»

`CaCl_(2)`
`CaO`
`CaCO_(3)`
`Ca(OH)_(2).`

Solution :`Ca(OH)_(2)+Cl_(2)rarr UNDERSET("BLEACHING powder")(CaOCl_(2))+H_(2)O`


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