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JEE Main & Advanced Chemistry Metallurgy / धातुकर्म Question Bank Refining of crude Metal

  • question_answer
    Of the following, which cannot be obtained by electrolysis of the aqueous solution of their salts [IIT 1990]

    A) \[Ag\]

    B) \[Mg\] and \[Al\]

    C) \[Cu\]

    D) \[Cr\]

    Correct Answer: B

    Solution :

    Mg and Al can not be obtained by the electrolysis of aqueous solution of their salts because instead of metal \[{{H}_{2}}\] gas is liberated at cathode.


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