Question

What are fuels? Give two examples of modern fuels.

Answer 1

Hint : Powers are dense storehouses of energy that are devoured to give energy administrations like warming, transportation, and electrical generation. Despite the fact that most powers at last get their energy from the sun (see energy protection) they are generally viewed as an essential fuel source. At the point when fuel is utilized, it goes through some cycle that leaves it in a structure with less energy. This implies that most powers are non-inexhaustible, however might be discovered broadly enough to be considered reasonable.

Complete Step By Step Answer:
As indicated by the law of protection of energy, it can neither be made nor be annihilated, it must be changed starting with one structure then onto the next. In this manner, we can't deliver energy to accomplish certain work. Thus, we utilize certain substances which assist us with changing one type of energy into another structure.
For instance, when we consume the paper with a matchstick, light is delivered by the fire. In the event that we investigate this intently, light energy isn't made around there, it has recently been delivered because of the change of warmth energy given by the matchstick into light energy. Consequently, we generally need a specific substance to change over one type of energy into another for achieving different positions. We call such materials as powers. As such, any substance which upon ignition delivers a usable measure of energy is known as fuel.
Two examples of modern fuels are: CNG (Compressed natural gas) and LPG (Liquefied natural gas).

Note :
Primary fuels incorporate nuclear fuels, biofuels, and petroleum products. Frequently essential fuels are handled to make something synthetically particular from how they were reaped from a characteristic asset. For instance, unrefined petroleum is an essential fuel that goes through fragmentary refining to become items more valuable to the purchaser.