1.

Which one of the following metals could not be obtained on electrolysis of aqueous solution of its salts

Answer»

`AG`
`MG`
`Cu`
`CR`

Solution :The reduction potential of Mgis less than that of water `(E^(o)=-0.83V)`. Hence their ions in the aqueous solution cannot be REDUCED instead water will be reduced.
`2H_(2)O+2e^(-)toH_(2)+2OH^(-)`.


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