Answer:
The bleaching action of \[{{H}_{2}}{{O}_{2}}\]
is due to its oxidising nature, i.e., due to nascent oxygen which if liberates
on decomposition when it acts as an oxidising agent
\[{{H}_{2}}{{O}_{2}}\to
{{H}_{2}}O+O\]
Coloured material + O \[\to
\]Colourless
Coloured material gets oxidised with nascent oxygen and oxidised
form is colourless. \[{{H}_{2}}{{O}_{2}}\] bleaches delicate materials like
silk, hair, ivory, cotton, wool, etc.
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