______________ is rich in mineral resources .

The mineral deposits in North America are located in ____________ zones. 

The  _________ minerals do not contain metals.

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

_____________ is the largest producer of bauxite in the world.

Which among the following is not a main mining center of coal ?

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

The __________ minerals are the most valuable minerals.

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

How many types of coal are there ?