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Question
The metal that cannot be obtained by electrolysis of the aqueous solution of its salts is ______.
Options
Ag
Cr
Cu
Al
MCQ
Fill in the Blanks
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Solution
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.
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