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BCECE Engineering BCECE Engineering Solved Paper-2003

  • question_answer
    Out of Cu, Al Fe and Zn, metal which can displace all others from their salt solution is:

    A) Al             

    B) Cu

    C) Zn            

    D) Fe

    Correct Answer: A

    Solution :

    Key Idea: The element occupying higher position in electrochemical series, displaces the metals present below it from their salts. \[\because \]Among \[\text{Cu,}\,\text{Al,}\,\text{Fe,}\]and Zn, Al occupies highest position in electrochemical series. \[\therefore \]  Al displaces Cu, Fe and Zn from their salts.


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