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

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

How many types of coal are there ?

______________ is rich in mineral resources .

The  _________ minerals do not contain metals.

________ is required to make petrol .

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

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

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

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