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Q.

$C r O_{5}^{} + H^{+} \to C r O_{4}^{2 -} + + H_{2} O$
Observe the reaction? the oxidation state of chromium in the reactant is

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a

Oxidation of Cr(IV) only

b

Oxidation of Cr(VI) only

c

Oxidation of Cr(V) only

d

Oxidation of Cr(III) only

answer is D.

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Detailed Solution

The substrate has two peroxide linkages(-1). One oxygen as -2

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