Magnetite type of Iron ore contains

1. 80% of pure iron
2. 72% of pure iron
3. 60% of pure iron
4. 40% of pure iron

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

This is an important mineral for making iron and steel

1. copper
2. iron
3. coal
4. manganese