Question

Lignite is a
A. Gaseous fossil fuel
B. Liquid fossil fuel
C. Solid fossil fuel
D. Inorganic fossil fuel

Answer 1

Hint: Fossil fuel is a term used for non-renewable energy sources like coal, coal products, derived gas unrefined petroleum, oil based goods and non-renewable wastes.

Complete answer:
> Fossil fuels have originated from plants and animals that existed within the geological past. Additionally, these are also made by mechanical cycles from other non-renewable energy sources. These fuels are found within the Earth’s crust and contain carbon and hydrogen, which may be burned for energy. Fossil fuels include coal, petroleum, oil shales, bitumens, tar sands, and heavy oils. All contain carbon and were formed by the geologic processes acting on the remains of organic matter produced by photosynthesis. All fossil fuels can be burned in air or with oxygen derived from air to provide heat.
> Lignite is yellow to dark brown or rarely black coal that formed from peat at shallow depths and temperatures under 100°C (212°F). It's the primary product of coalification and is intermediate between peat and subbituminous coal. In many countries lignite is taken into account to be a coal.
> Lignite contains about 60 to 70 percent carbon. Lignite is abundant and accessible.
> Lignite-generated electricity is reliable and environmentally compatible.
> Lignite is employed in an environmentally-responsible manner by power plants.

Most lignites have been formed during the Mesozoic and Cenozoic eras. Many lignite beds lie near the surface and are of great thickness; they're easily worked, and also the cost of production is low. The use of lignite is difficult thanks to its high water content. Upon exposure and weathering, a number of this water is given up, and disintegration, or crumbling, of the fabric occurs, which reduces the worth of lignite as a fuel. Lignite also tends to disintegrate during combustion, and therefore, the loss through a grate is also relatively high. It requires special care in storing, is uneconomical to move over long distances, and is subject to ignitions.

Therefore, the correct option is C, solid fossil fuel.

Note: It has been estimated that almost half the world’s total proven coal reserves are made from lignite and subbituminous coal, but lignite has not been exploited to any great extent, because it's inferior to higher-rank coals in calorific value, simple handling, and storage stability. In areas where other fuels are scarce, the assembly of wood coal far exceeds that of coal.