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  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-31

  • 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:

    A) Iron        

    B)                    Copper

    C) Zinc

    D) Gold

    Correct Answer: D

    Solution :

    Metal M is Ag or Au


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