For the reaction :

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Problem

For the reaction : 4CrO5+6H2SO4⟶2Cr2(SO4)3+6H2O+7O24\text{CrO}_5 + 6\text{H}_2\text{SO}_4 \longrightarrow 2\text{Cr}_2(\text{SO}_4)_3 + 6\text{H}_2\text{O} + 7\text{O}_2 , which statement is wrong : (1) It is disproportionation reaction (2) It is intramolecular redox (3) CrO5\text{CrO}_5 acts as oxidant and reductant both (4) Cr acts as oxidant whereas O acts as reductant

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