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A solution containing one mole per litre each of `AX, BX_(2), CX_(2)` and `DX_(2)` is electrolysed using inert electrodes. The values of the standard potentials for reduction reactions of `A^(+)|A, B^(2+)|B,C^(2+)|C` and `D^(2+)|D` are `+.80, +.34, -0.76` and `-1.66` volts respectively. The correct sequence in which these metals will be deposited on the cathode is :A. `A, B, C, D`B. `D, C, B, A`C. `A, C, B, D`D. `D, B, C, A` |
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Answer» Correct Answer - A The metal ion which is discharged first has higher reduction potential i.e. , `A gt B gt C gt D` |
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