ChemistryHard60×since 2002Q650Which of the following compounds show colour due to d-d transition?AK2Cr2O7\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7K2Cr2O7BCuSO4⋅5H2O\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}CuSO4⋅5H2OCKMnO4\mathrm{KMnO}_4KMnO4DK2CrO4\mathrm{K}_2 \mathrm{CrO}_4K2CrO4Check answerSkip