The significance: 

Copper is an indispensable metal in the electrical industry for making wires, electric motors, transformers and generators. It is alloyable, malleable and ductile. It is also mixed with gold to provide strength to jewellery.

Distribution:

The Copper deposits mainly occur in Singhbhum district in Jharkhand, Balaghat district in Madhya Pradesh and Jhunjhunu and Alwar districts in Rajasthan.

Minor producers of Copper are Agnigundala in Guntur District (Andhra Pradesh), Chitradurg and Hasan districts (Karnataka) and South Arcot district (Tamil Nadu).

Three advantages of hydro power are as follows :

(i) It is an inexhaustible source of energy.

(ii) It is pollution free.

(iii) It is a cheaper source of energy.

Orissa

Three broad belts of minerals in India are described below:

(iii) North-western region : It extends from the gulf of Khambat to Aravali hills in Rajasthan. Chief minerals are petroleum and natural gas, copper, mica, bauxite, silver and zinc.