1.

The bleaching action of H_(2)O_(2) is due to the following reaction

Answer»

`PbS+4H_(2)O_(2) RARR PbSO_(4)+4H_(2)O`
`H_(2)O_(2) rarr H_(2)O+(O)`
`H_(2)O_(2)+(O) rarr H_(2)O+O_(2)`
`H_(2)O_(2)+O_(3) rarr H_(2)O+2O_(2)`

ANSWER :B


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