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     EduGorilla 
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    Which one of the following reactions is responsible for the formation of green coloured deposit on copper utensils?

    Options :-

    1. Cu + O2 + H2O CuO2.H2O
    2. Cu + CO2 + 2H2O CuCO2(OH)2
    3. 2Cu + CO2 + H2O + O2 CuCO3.Cu(OH)2
    4. Cu + O2 + CO2 + H2O CuCO3.H2O2
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