Question

7. Seema's grandfather filled a copper glass
with water and kept it aside. He forgot about
this glass. After a few days, he found a dull
green coating on the glass. Seema was
surprised.
Her grandfather told her that this layer
contains a mixture of
a copper hydroxide and copper carbonate
b copper hydroxide and copper oxide
c copper oxide and copper sulphide
d copper sulphate and copper oxide. also tell reason​

Answer 1

Explanation:

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