Question

why carbon and its compounds used as fuels​

Answer 1

The carbon compounds, used as a fuel, have high calorific values. Therefore, carbon and its compounds are used as fuels for most applications. Most of the carbon compounds give a lot of heat and light when burnt in air. Saturated hydrocarbons burn with a clean flame and no smoke is produced.

Answer 2

Answer:

Fuels are classified on the basis of their physical state as follows:

Solid fuels: Wood - Cellulose (C6H1005)n, Coal - carbon, Coke - carbon.

Liquid fuels: Kerosene - carbon, ethanol - carbon, petrol, diesel - carbon.

Gaseous fuels: Methane - carbon, liquefied petroleum gas (LPG) - butane - isobutane, natural gas - Methane, water gas - (CO+H2), producer gas - CO. Above all fuels are combustible carbon compounds and contain combustible carbon, therefore, carbon and its compounds are used as fuels.