Fill in the following blanks with suitable words: (a) The corrosion of iron is called . (b) and are necessary for the rusting of iron. (c) The process of depositing a thin layer of zinc on iron articles is called . (d) Tiffin boxes are electroplated with but car bumpers are electroplated with to protect them from rusting. (e) The corrosion of copper produces a coating of basic copper carbonate on its surface. (j) Brass is an alloy of copper and . (g) Bronze is an alloy of copper and . (h) The non-metal present in steel is . (i) The alloy in which one of the metals is mercury is called an . (j) The electrical conductivity and melting point of an alloy is than that of pure metals. The rocky material found with ores is called .