In alkaline medium,H2O2 reacts with Fe+3 and Mn+2 separately to give:

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Fe+4 and Mn4+

Fe+2 and Mn+2

Fe+2 and Mn+4

Fe4+ and Mn+2

answer is C.

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Detailed Solution

K3FeCN6 is reduced by H2O2 in alkaline medium 2K3FeCN6+2KOH+H2O2→ 2K4FeCN6+2H2O+O2MnOH2 is oxidised by H2O2 in alkaline medium MnOH2+H2O2→MnO2+2H2O

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