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Q.

When  H2O2 is added to ice-cold solution of acidified potassium dichromate containing ether and the contents are shaken and allowed to stand

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a

A blue colour is obtained in ether due to formation of a  Cr2(SO4)3

b

Chromyl chloride is formed

c

A blue colour is obtained in ether due to formation of  CrO5

d

CrO3  is formed which dissolves in ether to give blue colour

answer is B.

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Detailed Solution

A blue colour is obtained in ether due to formation of  CrO5

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When  H2O2 is added to ice-cold solution of acidified potassium dichromate containing ether and the contents are shaken and allowed to stand