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a
FeSO4 is oxidised and KMnO4 is reduced
b
Only KMnO4 is oxidised
c
Only FeSO4 is oxidised
d
None of these
answer is A.
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Detailed Solution
FeSO4 is oxidised and KMnO4 is reduced.2KMnO4+3H2SO4→K2SO4+2MnSO4+3H2O+5O2FeSO4+H2SO4+O→Fe2SO43+H2O×5 In this reaction oxidation state of Mn is changing from +7 to +2 while oxidation state of Fe is changing from +2 to +3.