Copper I Oxide or copper II oxide  
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Answer 
 
The answer is : Copper ii oxide dissolves in H2SO4 to produce Copper ii sulfate Copper ii oxide is in soluble in water . It does not give effervescence with acid
 
Copper chloride and copper nitrate are soluble in water
 
Copper carbonate is insoluble in water but gives effervescence with acid
 
Nikhilesh
      The answer is : Copper ii oxide dissolves in H2SO4 to produce Copper ii sulfate Copper ii oxide is in soluble in water . It does not give effervescence with acid
Copper chloride and copper nitrate are soluble in water
Copper carbonate is insoluble in water but gives effervescence with acid
Nikhilesh
