Which one of the following state has largest deposit of iron ore?

Which one of the following natural resources are not used completely ?

Which one of the following is an exhaustible source of energy?

Minerals taken out of the earth are called

The process used to separate petroleum into different products is

What is found along with petroleum in some oil wells?

The quantity of natural resources of the earth are

The big holes dug in the earth surface to take out minerals are called

Petroleum refinery is found in

The naturally occurring substances that are obtained by mining or drilling are