Question

How are fuels classified and give two examples

Answer 1

Fuels are of two types :
1. Convention Fuels : The fuels which are available in nature and are non renewable. eg Coal, petrol, diesel.
2. Non Convention Fuels : The fuels which are manmade and are renewable . Eg Solar energy, wind energy.

Answer 2

The two fuels are 1.Coal ,2. petroleum
example 1-charcoal,used to generate electricity
2-petroleum jelly ,diesel