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Ethers in contact with air for a long ti...

Ethers in contact with air for a long time form peroxides. The presence of peroxide in ether can be tested b y adding `Fe^(2+)` ions followed by the addition of

A

`KCNS`

B

`SnCI_(2)`

C

`HgCI_(2)`

D

`KI`.

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The correct Answer is:
A
NA
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