A copper vessel kept in open air slowly loses its shining brown surface and gains a green coating. It is due to the formation of
A. CuSO4
B. CuCO3
C. Cu(NO3)2
D. CuO
Answer:B
A copper vessel kept in open air slowly loses its shining brown surface and gains a green coating. It is due to the formation of
A. CuSO4 B. CuCO3 C. Cu(NO3)2 D. CuO