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NEET Sample Paper NEET Sample Test Paper-17

  • question_answer
    In the equation,\[4M+8C{{N}^{-}}+2{{H}_{2}}O+{{O}_{2}}\to \]\[4{{[M{{(CN)}_{2}}]}^{-}}+4O{{H}^{-}}\] Identify the metal M. It is

    A)  Iron               

    B)  Copper          

    C)       Zinc               

    D)       Gold              

    Correct Answer: D

    Solution :

    This reaction is used in extraction of Au. Hence, the correct option is (d).


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