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JIPMER Jipmer Medical Solved Paper-1997

  • question_answer
    When the same amount of Al is treated with an excess of \[HCl\] and \[NaOH\], the volumes of hydrogen evolved are in the ratio of:

    A)  1 : 1                                      

    B)  2 : 3                      

    C)  1 : 2                      

    D)         2 : 1

    Correct Answer: A

    Solution :

    Aluminium reacts with \[HCl\] and NaOH, as follows: \[2Al+6HCl\xrightarrow{{}}2AlC{{l}_{3}}+3{{H}_{2}}\uparrow \] \[2Al+2NaOH+2{{H}_{2}}O\xrightarrow{{}}2NaAl{{O}_{2}}+3{{H}_{2}}\uparrow \]Hence, ratio of hydrogen evolved in both cases is 1 : 1.  


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