Question

what are fuels? how are they classified ? give suitable examples.​

Answer 1

Answer:

-Based on their occurrence they are classified as natural and artificial fuel. Wood, natural gas and petroleum are the example of natural fuel whereas coal tar, producer gas tanbark are the example of artificial fuels. Note: The energy produced by the combustion of one kilogram of fuel is known as its calorific value.

Answer 2

Answer:

Natural Fuels Artificial Fuels

Liquid Fuels

Petroleum Oils from distillation of petroleum, Coal Tar, Shale-Oil, Alcohols, etc.

Gaseous Fuels

Natural Gas Coal gas, Producer Gas, Water Gas, Hydrogen, Acetylene, Blast Furnace Gas, Oil Gas