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J & K CET Medical J & K - CET Medical Solved Paper-2006

  • question_answer
    Which of the following metal can be obtained by the electrolysis of the aqueous solution of their salts?

    A)  Cu                                         

    B)  Na

    C)  Mg                                       

    D)  K

    Correct Answer: B

    Solution :

                    Sodium metal (Na) is obtained by the electrolysis of the aqueous solution of their salts. \[NaClN{{a}^{+}}+C{{l}^{-}}\] At cathode:        \[N{{a}^{+}}+{{e}^{-}}\xrightarrow[{}]{{}}Na\] At anode:            \[2C{{l}^{-}}\xrightarrow[{}]{{}}C{{l}_{2}}+2{{e}^{-}}\]


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