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1)

 If stoichiometric  quantites  of KMnO4 and K2Cr2O7 mixture is added for the oxidation  of Fe2+ to Fe3+ in acidic medium , then Fe2+ will be oxidised


A) equally by KMnO4 and K2Cr2O7

B) more by KMnO4

C) more by K2Cr2O7

D) no reaction

Answer:

Option B

Explanation:

 KMnO4+K2Cr2O7

 In the process KMnO4 is strong oxidising agent in acidic medium . it oxidises Fe2+ to Fe3+ . K2Cr2O7 is weak oxidising agent in acidic medium