JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank Compounds of Transitional Elements

  • question_answer
    When metallic copper comes in contact with moisture, a green powdery/ pasty coating can be seen over it. This is chemically known as [AFMC 2002]

    A) Copper sulphide - Copper carbonate

    B) Copper carbonate - Copper sulphate

    C) Copper carbonate - Copper hydroxide

    D) Copper Sulphate - Copper sulphide

    Correct Answer: C

    Solution :

    \[Cu+{{O}_{2}}+C{{O}_{2}}+{{H}_{2}}O\to Cu{{(OH)}_{2}}.CuC{{O}_{3}}\]


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