There are many different features that we can use to decide if fuel is a good one.
Fuel may be defined as any combustible substance, chemical or reactant containing carbon as the main constituent which on proper burning produces heat that can be used economically for domestic and industrial purposes and in the generation of power.
Good fuel
Fuel is said to be good fuel if it produces a large amount of heat on burning without producing a lot of smoke and is easily available. The fuel must be easily accessible and available at an economical price.