Strike out which is inexhaustible.

Which among these is not exhaustible?

Coal, petroleum and natural gas are formed from dead remains of organisms over millions of year. So, they are also called:

Which amng these is not an use of coal?

Process of conversion of dead organisms into coal is called:

Which among these is not a product of coal?

Napthalene balls that we use in cloths to repel insects come from:

Light automobiles like motorcycle and scooter run on:

Heavy mtor vehicle like truck and tractors run on:

Which among these is not a constituent of petroleum?

Different constituents of petroleum isseperated at:

Which fuel can not be transported through pipes?

Why we use compressed natural gas into transport vehicle?

Natural gas can be transported through pipes. Currently we have pipe distribution of natural gas in:

Natural gas is found in:

Why do we need to utilize petroleum carefully?

How can we reduce petroleum consumption during driving?