State the uses of zinc and iron.

(N/A) Zinc: Zinc is used for galvanising iron to prevent corrosion. It is also used in large quantities in batteries. It is a constituent of many alloys,e.g.,brass ($Cu$ $60\%$,$Zn$ $40\%$) and German silver ($Cu$ $25-30\%$,$Zn$ $25-30\%$,$Ni$ $40-50\%$). Zinc dust is used as a reducing agent in the manufacture of dye stuffs and paints.
Iron: Cast iron is used for casting stoves,railway sleepers,gutter pipes,and toys. It is used in the manufacture of wrought iron and steel. Wrought iron is used in making anchors,wires,bolts,chains,and agricultural implements. Alloy steel is obtained when other metals are added to iron. Nickel steel is used for making cables,automobiles,aeroplane parts,pendulums,and measuring tapes.