Which is the largest open pit copper mine in the world?

Which one of the following city has petroleum refinery?

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

Which one of the following mineral is found in Bombay High?

The quantity of natural resources of the earth are

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

The process used to separate petroleum into different products is

Which metal is used for constructing buildings and bridges?

Rocks that contain enough of a mineral to be mined for profit are called

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