Jee AdvancedSalt AnalysisIIT-JEE 2006MCQ+3 / -12006$\mathrm{CuSO}_4$ decolourises on addition of KCN , the product isA$\left[\mathrm{Cu}(\mathrm{CN})_4\right]^{2-}$B$\mathrm{Cu}^{2+}$ get reduced to form $\left[\mathrm{Cu}(\mathrm{CN})_4\right]^{3-}$C$\mathrm{Cu}(\mathrm{CN})_2$DCuCNCheck AnswerClear SelectionReveal AnswerShow Explanation
