When black copper oxide placed in a beaker is treated with dilute HCl, its colour changes to......... a) Whiteb) Red c) Blue-green d) No change

When black copper oxide placed in a beaker is treated with dilute HCl, its colour changes
to.........
a) Whiteb) Red
c) Blue-green
d) No change
by

1 Answer

Answer :

c) Blue-green
by

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