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Prussion blue is formed when :

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Prussion blue is formed when :
A. Ferrous sulphate reacts with `FeCI_(3)`
B. Forric sulphatee reacts with `K_(4)[Fe(CN)_(6)]`
C. Ferrous ammonium sulphatee reacts with `FeCI_(3)`
D. Ammonium sulphate reacts with `FeCI_(3)`
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Correct Answer - b
`2Fe_(2)(SO_(4))_(3) + 3K_(4)[Fe(CN)_(6)] rarr underset("Prussian blue")(Fe_(4)[Fe(CN)_(6)]_(3))+6K_(2)SO_(4)`
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