Tag: fuels and fossil fuels

The energy possessed by fossil fuels such as coal, petroleum and natural gas is called the chemical energy or fuel energy. These fuels contain chemical energy stored in them.

Fossil fuels are combustible fuels with high and rapid combustion rate.

Anaerobic decomposition of dead animals and plants along with exposure to Earth's heat and pressure resulted in buried source of energy: fossil fuels.

Coal is a fossil fuel which is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. Coal is composed primarily of carbon, along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. A fossil fuel, coal forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite. This involves biological and geological processes that take place over time. Throughout history, coal has been used as an energy resource, primarily burned for the production of electricity and heat, and is also used for industrial purposes, such as refining metals. Coal is the largest source of energy for the generation of electricity worldwide, as well as one of the largest worldwide anthropogenic sources of carbon dioxide releases. The extraction of coal, its use in energy production and its byproducts are all associated with environmental and health effects including climate change.

A non-renewable resource (also called a finite resource) is a resource that does not renew itself at a sufficient rate for sustainable economic extraction in meaningful human time-frames.
Fossil fuels are non renewable resource.
Wind and wood are renewable  as their localized replenishment can occur within time frames meaningful to humans.

Water gas, coal gas, and producer gas are all gaseous fuels, whereas coke is a solid fuel.

Charcoal, lignite, and coke are solid carbon-based fuels derived from natural sources, whereas alcohol is a liquid fuel.

fuels like petrol and wood, electricity is cheaper and produce less toxic gas when it burn.
Option C

Coke is obtained from Coal.

Petroleum is a fossil fuel formed from the remains of ancient marine organisms that were buried under layers of sediment and subjected to high pressure and heat over millions of years. Coal is derived from land vegetation, while biogas is produced from organic waste.