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(a) With the help of a labelled diagram...

(a) With the help of a labelled diagram, explain the process of electrolytic refining of copper.
(b) Name the substance formed on the surface of copper when it reacts slowly with moist `CO_2` in the air.

Answer

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Knowledge Check

  • When you heat a China dish containing 1gm of Copper powder, a Black substance is formed on the surface of the powder due to:

    A
    Atomization
    B
    Carbonization
    C
    Oxidation
    D
    Desalinization

  • Slaked lime reacts slowly with CO2, in air to form a thin layer of.

    A
    `Ca(HCO_(3))_(2)`
    B
    CaO
    C
    `Ca(OH)_(2)`
    D
    `CaCO_(3)`

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