Question

What are fuels ? Give two examples of modern fuels.​

Answer 1

Answer:

Fuels are also used in the cells of organisms in a process known as cellular respiration, where organic molecules are oxidized to release usable energy.

Explanation:

1. CNG (Compressed natural gas)

2. LPG (Liquefied natural gas)

Answer 2

Explanation:

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