2. Solved Papers
  3. WB JEE Medical

WB JEE Medical WB JEE Medical Solved Paper-2006

  • question_answer
    Which of the following dissolves in hot cone. NaOH solution?

    A)  Fe                                         

    B)  Zn

    C)  Cn                                         

    D)  Ag

    Correct Answer: B

    Solution :

                     Zn dissolves in cone. NaOH due to the formation of sodium zincate. \[Zn+2NaOH\xrightarrow{{}}N{{a}_{2}}Zn{{O}_{2}}+{{H}_{2}}\]


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