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

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

  1. A

    Fe+4and  Mn4+

  2. B

    Fe+2and  Mn+2

  3. C

    Fe+2and  Mn+4

  4. D

    Fe4+and  Mn+2

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    Solution:

    K3FeCN6 is reduced by H2O2 in alkaline medium 

    2K3FeCN6+2KOH+H2O2  2K4FeCN6+2H2O+O2

    MnOH2 is oxidised by H2O2 in alkaline medium 

    MnOH2+H2O2MnO2+2H2O

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