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Sodium nitrophrusside when added to an alkaline solution of sulphide ions produce as
A. Red colouration
B. Blue colouration
C. Purple colouration
D. Brown colouration

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Correct Answer - C
`Na_(2)S+underset("Sodium nitroprusside")(Na_(2)[Fe(NO)(CN)_(5)])to underset("Violet coloured complex")(Na_(3)[Fe(ONSNa)(CN)_(5)])` or `underset("Purple colour complex")(Na_(4)[Fe(CN)_(5)NOS])`

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