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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2008

  • question_answer
    Hydrogen gas is not liberated when the following metal is added to dil \[HCl\]

    A)  Ag                                         

    B)  Zn

    C)  Mg                                       

    D)  Sn

    Correct Answer: A

    Solution :

    The metals, present below hydrogen in the electrochemical series, cannot liberate hydrogen from the dilute acids. Among the given metals only Ag is present below hydrogen in electrochemical series, so it does not evolve hydrogen with dil \[HCl\].                 \[Ag+dil\text{ }HCl\xrightarrow{{}}\] No reaction


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