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Q.

When KMnO4 acts as an oxidizing agent and ultimately forms MnO2, MnO4-2 , Mn and Mn2+ in separate reactions, then the number of electrons transferred in each case respectively is :

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a

4, 3, 1, 5

b

1, 5, 3, 7

c

1, 3, 4, 5

d

3, 1,7,5

answer is D.

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Detailed Solution

Mn+7in MnO4-  changes to +4(MnO2) +6(MnO4-2) 0(Mn) +2(Mn+2)
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