A red solution is obtained when ferric chloride solution is added to sodium extract. It indicates both nitrogen and sulphur are present in the organic compound.

True

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False

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Solution

The correct option is A True
Ferric Chloride $(F e C l_{3})$ that reacts with Sodium Thiocyanate $(N a C N S)$ to form Ferric Thiocyanate $[F e (C N S)_{3}]$ which is blood red in color. This test can be used as a confirmatory test for organic compounds containing both Nitrogen and Sulfur (e.g. Methionine amino acid).

$N a C N + S_{8} Δ \to N a S C N S o d i u m T h i o c y n a t e$

$F e^{+ 3} + 3 N a S C N \to F e (S C N)_{3} F e r r i c t h i o c y n a t e (B l o o d r e d c o l o u r a t i o n)$

$H e n c e t h e c o r r e c t a n s w e r i s t h e o p t i o n (A)$

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