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With 'X' cation [Fe(CN)(6)]^(4-) gives p...

With 'X' cation `[Fe(CN)_(6)]^(4-)` gives prussian blue colouration due to the formaion of ferri-ferro cyanide, `Fe_(4)[Fe(CN)_(6)]_(3)` while with `NH_(4)SCN, 'X'` cation gives....

A

Deep red, `[Fe(H_(2)O)_(5)(SCN)]^(2+)`

B

Blue, `Fe_(4)[Fe(CN)_(6)]_(3)`

C

Brown, `[Fe(H_(2)O_(5)(NO_(3))]^(2+)`

D

Green, `[Cr(NH_(3))_(6)]^(3+)`

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The correct Answer is:
A
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