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  3. NEET

NEET AIPMT SOLVED PAPER 1998

  • question_answer
                    Without losing its concentration \[ZnC{{l}_{2}}\] solution cannot be kept in contact with:                              

    A)                 Au

    B)                 Al           

    C)                                            Pb          

    D)                                            Ag

    Correct Answer: B

    Solution :

                    In electrochemical series Al is placed above Zn and all others are present below Zn. So, aluminium displaces zinc from \[ZnC{{l}_{2}}\] solution. Hence, it cannot keep in contact with Al                  \[2Al+3ZnC{{l}_{2}}\xrightarrow[{}]{{}}2AlC{{l}_{3}}+3Zn\]


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