When an ecidified solution of ferrous sulphiate is treated with potassium paramagnet solution, the ion which is oxidised is
When an ecidified solution of ferrous sulphiate is treated with potassium paramagnet solution, the ion which is oxidised is
A. `MnO_(4)^(-)`
B. `NH_(4)^(+)`
C. `Fe ^(3+)`
D. `SO_(4)^(2-)`
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