1.

Which one of the following is not feasible

Answer»

`Zn_((s)) + Cu_((aq))^(2+) RARR Cu_((s)) + Zn_((aq))^(2+)`
`Cu_((s)) + Zn_((aq))^(2+) rarr Zn_((s)) + Cu_((aq))^(2+)`
`Cu_((s)) + 2Ag_((aq))^(+) rarr Ag_((s)) + Cu_((aq))^(2+)`
`Fe_((s)) + Cu_((aq))^(2+) rarr Cu_((s)) + Fe_((aq))^(2+)`

ANSWER :B


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