On the basis of the type of the mineral and its commercial importance,minerals are classified into ______ groups.

The  _________ minerals do not contain metals.

In some oil fields, ________ is found along with mineral oil.

Which among the following states does not have iron ore mines ?

The _________ minerals contain metal in raw form.

________ is required to make petrol .

___________ play an important role in the development of human life.

Which among the following place is a major steel producing factory ?

The __________ minerals are the most valuable minerals.

_____________ is the largest producer of bauxite in the world.