Which cannot be obtained by electrolysis of the aqueous solution of their salt?

A g

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M g

and

A l

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C u

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C r

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Solution

The correct option is B $M g$ and $A l$
$M g$ and $A l$ cannot be obtained by the electrolysis of aqueous solution of their salts because instead of metal, $H_{2}$ gas is liberated at a cathode.

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Similar questions

Choose the metals, from the following, that are obtained by electrolysis of their salts:

$A l, N a, C u, A g, M g, C a$

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