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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2012

  • question_answer
    Refining of impure copper with zinc impurity is to be done by electrolysis using electrodes as

    A)  Cathode-pure copper        Anode-pure zinc

    B)  Cathode-pure zinc          Anode- pure copper

    C)  Cathode-pure copper       Anode-impure copper

    D)  Cathode-pure zinc           Anode- impure zinc

    Correct Answer: C

    Solution :

     For purification, uyipure metal gets oxidized (deelectronation)   falling   into   solution with mud, that's why impure metal is made as anode.


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