Purification and characteristic of organic compounMedium

Question

The amino acid that gives a red-blood colour on treating its sodium fusion extract with sodium nitroprusside is

Options

A.methionine
B.serine
C.leucine
D.threonine

Solution

Sol. [Key Concept: Sodium-nitroprusside test for sulphur-containing amino acid]

In case both nitrogen and sulphur are present in an organic compound, it gives blood red colour with sodium nitroprusside.

∴ Methionine

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