Question

The metal that cannot be obtained by electrolysis of the aqueous solution of its salts is ______.

विकल्प

• Ag

• Cr

• Cu

• Al

Answer 1

The metal that cannot be obtained by electrolysis of the aqueous solution of its salts is Al.

Explanation:

Aluminium cannot be obtained by electrolysis of its aqueous salt solution because its ion (Al³⁺) has a very high reduction potential. In aqueous solution, water gets reduced preferentially to hydrogen gas instead of Al³⁺ being reduced to aluminium metal.