Question

what is electroplating?

Answer 1

coat (a metal object) by electrolytic deposition with chromium, silver, or another metal.

"all the processes involved in electroplating"

Answer 2

$\textbf{Electroplating}$:

The process of depositing a thin layer of any superior metal over an object of a cheaper metal, with the help of electric current is called electroplating.

For example, deposition of silver on brass or copper objects and that of copper, nickel, chromium etc., on objects made of iron is done by electroplating.