46th B.P.S.C. (Pre) 2004
In the method of electroplating on a vessel with zinc
aThe vessel is made to be the negative pole
bPure zinc is made to the positive pole
cThe vessel is made negative pole and pure zinc as positive pole✓ Correct
dThe pot is made the positive pole and zinc the negative pole
Explanation
In electroplating a vessel with zinc, zinc becomes a cation by losing two electrons, and the vessel becomes negative by gaining electrons. Thus, zinc becomes the positive electrode and the vessel becomes the negative electrode.
general-science