Understanding Different Types of Coal

Bituminous is a type of coal that is soft and can be easily crushed. It is often used for making coal tar, which is used in the production of roads and other construction materials.

Question 28. What is lignite ?
Ans. Lignite is a type of coal that is soft and brownish-black in color. It is the lowest rank of coal, and it is often used for generating electricity.

Question 29. What is sub-bituminous coal ?
Ans. Sub-bituminous coal is a type of coal that is between bituminous and lignite in rank. It has a higher moisture content than bituminous coal, but it is still relatively soft and easy to crush.

Question 30. What is anthracite ?
Ans. Anthracite is the highest rank of coal, and it is characterized by its high carbon content and low moisture content. It is hard and brittle, and it is often used for making steel and other metals.