Question

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

Answer 1

Lignite is a fossil fuel.
It is also known as Brown coal.
Lignite is lighter in color than all higher rank coal.
It contains the lowest carbon content.
It has high moisture content and crumbles in texture.

Complete answer:

Lignite is also referred to as brown coal.
It is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat.
It is considered the lowest level of coal due to its relatively low heat content.
It has a carbon content around 25 to 35 percent.
It is mined all around the world and is used almost exclusively as a fuel for steam-electric power generation.
It is the type of coal that is most harmful to human health.
A characteristic feature of the lignite is:
1. High moisture content
2. Energy content ranges from 10 to 20 MJ.
3. It has high content of volatile matter.
Uses of lignite:
1. Due to its low density and high moisture content, it is not transported along with the other high level carbon.
2. It is often burned in power stations.
3. It is used in cultivation and distribution of biological control microbes that suppress the plant disease cause microbes.
Germany has the highest deposit of the fuel followed by China, Russia and the United States.
It is solid in nature and found in the form of rock.
It is a non renewable source of energy that’s why it is known as fossil fuel.
So, lignite is a solid type of fossil fuel.
Lignite is of two types:
1. Fossil wood or xyloid lignite
2. Compact Lignite.

So, the correct option is option C. Solid fossil fuel.

Note: Although xyloid lignite may sometimes have the tenacity and the appearance of ordinary wood, it can be seen that the combustible woody tissue has experienced a great modification.
It is reducible to a fine powder by trituration, and if submitted to the action of a weak solution of potash, it yields a considerable quantity of humic acid.