Define fuel. What are the different states of fuel?
Fuels are substances that can act as a source of energy. It forms in three state:
(i) Solid
Example- Wood and Coal.
(ii) Liquid
Example- Petrol, Diesel and Kerosene
(iii) Gas
Example- CNG
What is Fuel? Name the different types of fuel.
(a) What are fuels ? Name any two common fuels.
(b) State any four characteristics of an ideal fuel (or good fuel).