Select from the following.
(1). casting;
(2). cold fusion;
(3). distillation;
(4). electroplating;

Answer the following question given this paragraph: Electroplating In a process called electroplating, a layer of a second metal is deposited on the metal electrode that acts as the cathode during electrolysis. Electroplating is used to enhance the appearance of metal objects and protect them from corrosion. Examples of electroplating include the chromium layer found on many bathroom fixtures or (in earlier days) on the bumpers and hubcaps of cars, as well as the thin layer of precious metal that coats silver-plated dinnerware or jewelry. In all cases, the basic concept is the same. A schematic view of an apparatus for electroplating silverware and a photograph of a commercial electroplating cell are shown in Figure 19.24 "Electroplating". Q: What is the process in which a layer of a second metal is deposited on the metal electrode that acts as the cathode during electrolysis? A:
Answer:
(4).