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Sulphur

Sulphur prese...

Question

Sulphur present in an organic compound is detected by treating the sodium extract with____________.

A

potassium ferricyanide

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B

potassium ferrocyanide

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C

sodium nitroprusside

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D

ammonium thiocyanate

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Solution

The correct option is C sodium nitroprusside
$S^{2 -} + [F e (C N)_{5} N O]^{2 -} Nitroprusside ion ⟶ [F e (C N)_{5} N O S]^{4 -} violet color$

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