Q.

Delicate materials like silk, wool and ivory are bleached by

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a

H2O2

b

CaOCl2

c

Cl2

d

None

answer is A.

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Detailed Solution

H2O2 is used to bleach very delicate materials like silk, wool, ivory and hair...etc.→ The bleacjing action of H2O2 is due its axidising nature. That means nascet oxygen which is given by H2O2 decolurises coloured substances.H2O2 → H2O + Ocolour substance + (O) → colourless.
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