The direction 3CrO43−+8H+→2CrO42−+Cr3++4H2O shows.

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Oxidation of Cr5+ only

Inter molecular redox

non redox reaction

Disproportionation reaction

answer is D.

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Detailed Solution

CrO43− CrO42− Cr3+x+4−2=−3 x+4−2=−2 x=+3x=+5 x=+6If one atom can undergo both oxidation and reduction called disproportion reaction

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