Formation of Na4[Fe(CN)5NOS], a purple coloured complex formed by addition of sodium nitroprusside in sodium carbonate extract of salt indicates the presence of : (A) Sulphate ion (B) Sulphide ion (C)

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Question

Formation of Na4[Fe(CN)5NOS], a purple coloured complex formed by addition of sodium nitroprusside in sodium carbonate extract of salt indicates the presence of :

(A) Sulphate ion
(B) Sulphide ion
(C) Sodium ion
(D) Sulphite ion

Prashant Kotian · Accepted Answer

Correct answer: B. Na2[Fe(CN)5NO] + Na2S  Na4[Fe(CN)5NOS]

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