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The equivalent weight of KMnO4 in acidic medium is M/2

The equivalent weight of potassium dichromate is M/6 in acidic medium

The valency factor depends on oxidation state, color of the compound along with medium used.

The valency factor of H2O2 in basic medium is 4

answer is B.

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Detailed Solution

n - factor of dichromate ion is Cr2O7-2 +14H++6e-→2 Cr+3 +7 H2OWe can see that change is oxidation state is 3 and for two atoms its 6.

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