2. Solved Papers
  3. BCECE Engineering

BCECE Engineering BCECE Engineering Solved Paper-2009

  • question_answer
    The metal which gives \[{{\text{H}}_{\text{2}}}\]on treatment with acid as well as \[NaOH\] is

    A)  Fe                         

    B)         Cu                         

    C)  Zn                         

    D)         Hg

    Correct Answer: C

    Solution :

    Zinc (Zn) being a moderately reactive metal, gives Hz with adds as well as \[NaOH\]. \[Zn+2HCl\xrightarrow{{}}ZnC{{l}_{2}}+{{H}_{2}}\] \[Zn+NaOH\xrightarrow{{}}\underset{\text{sodium}\,\text{zincate}}{\mathop{N{{a}_{2}}Zn{{O}_{2}}}}\,+{{H}_{2}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner