State the importance of copper in the industrial development.

Copper is in great demand in the industrial field because of its high ductility, and high thermal and electrical conductivity. Following are the important uses of copper:

1. It is mainly used in electrical machinery, automobile industry, stainless steel and telephones.
2. Copper is also used in railway equipment industry and other engineering works.
3. The nickel-copper alloy (morel metal) is very tough and resists corrosion and is largely used as a material for construction in the chemical industry.