Of The Following, Which Cannot Be Obtained By Electrolysis Of The Aqueous Solution Of Their Salts?

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Question

Of the following, which cannot be obtained by electrolysis of the aqueous solution of their salts?

Cu
Ag
Mg and Al
Cr

easy

Solution

Correct option is

Mg and Al

Mg and Al cannot be obtained by the electrolysis of aqueous solution of their salts because instead of metal, H₂ gas is liberated at cathode.

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