Question

which of these is a fuel ?

Answer 1

Answer:

Chemical

Primary (natural) Secondary (artificial)

Solid fuels wood, coal, peat, dung, etc. coke, charcoal

Liquid fuels petroleum diesel, gasoline, kerosene, LPG, coal tar, naphtha, ethanol

Gaseous fuels natural gas hydrogen, propane, methane, coal gas, water gas, blast furnace gas, coke oven gas, CNG.

Answer 2

Fuel: The substances which on burning produce heat energy are called fuels.

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