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Give the reason for bleaching action of ...

Give the reason for bleaching action of `Cl_2`.

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Bleaching action of `Cl_2` is due to oxidation.
`Cl_2 + H_2 O to 2HCl to [O]`
Coloured substance + `[O] to ` Colourless substance
It bleaches vegetable or organic matter in the presence of moisture. Bleaching effect of `Cl_2` is permanent.
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