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The metal that cannot be obtained by ele...

The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is

A

`Cu`

B

`Cr`

C

`Ag`

D

`Ca`

Text Solution

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The correct Answer is:
d
During the electrolysis of aqueous solution of `s-` block elements,` H_(2)` gas is obtained at cathode. Reduction potential os `s-` block elements is less than the reduction potential oof `H_(2)O`, so reduction of `H_(2)O` takes place and `H_(2)(g)` is obtained at cathode.
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