Fill in the blank spaces given to complete each sentence.

1. Metallic minerals are classified into …………….. and ………….
2. Gold and silver are …………. minerals.
3. Minerals can be extracted by ………….,…………., or …………
4. Deep bores dug to reach mineral deposits are called …………
5. Metallic minerals are generally found in ……….. and…………..rock formations.
6. The mineral deposits in North America have located in three zones: …………… the Appalachian region and the mountain ranges of the West.
7. …………… is the largest producer of bauxite in the world.
8. …………. is the most abundantly available fossil fuel.
9. Petroleum is drilled from ………
10. Bhakra Nangal is an important …………….. station in India.
11. …………… and……… are radioactive metals.