JEE Advanced 2025 Chemistry question

During sodium nitroprusside test of sulphide ion in an aqueous solution, one of the ligands coordinated to the metal ion is converted to

Answer: (A)

Solution

Sulphide ion reacts with sodium nitroprusside to give a violet complex: \mathrm{[Fe(CN)_5NO]^{2-} + S^{2-} \rightarrow [Fe(CN)_5NOS]^{4-}}. The

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Question ID VK-035498