If excess zinc is added to a bluish green solution of copper (II) sulphate, and the excess zinc filtered off after completion of reaction, a colourless solution is obtained because
-
A.
both zinc and copper are metals -
B.
the sulphate radical and the zinc ion are divalent -
C.
zinc is more electropositive than copper -
D.
both zinc and copper form depositive ions in solution -
E.
zinc is a reducing agent