Iron ore is mainly used for

1. ship building
2. bolts, nails and screws
3. roads and railways
4. all the above

This state has the largest reserves of magnetite and haematite

1. Odisha
2. Rajasthan
3. Karnataka
4. Madhya Pradesh

Manganese is used in the manufacture of

1. bolts & nails
2. sponge
3. iron appliances
4. ferromanganese

This mineral is highly ductile

1. iron ore
2. manganese
3. copper
4. bauxite