If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation o

If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of
A. hydrated copper sulphate
B. copper oxide
C. basic copper carbonate
D. copper nitrate

If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of

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