Question

2
8. Write answers to the following in
detail.
a. What are the different types of coal?
What are their uses?​

Answer 1

Answer:

Types of Coal: (i) Peat Coal: This is the first stage in the change of wood to coal. (ii) Lignite Coal: Lignite burns with much smoke and flame. (iii) Bituminous Coal: (iv) Anthracite Coal: (i) Coal as a source of steam energy: (ii) As a source of electrical energy: (iii) Domestic fuel:

Explanation:

hope it helps

Answer 2

Coal is classified into four main types:

anthracite, bituminous, subbituminous, and lignite. The ranking depends on the types and amounts of carbon the coal contains and on the amount of heat energy the coal can produce.

Anthracite contains 86%–97% carbon and generally has the highest heating value of all ranks of coal. Anthracite is mainly used by the metals industry.

Bituminous contains 45%–86% carbon. Bituminous coal is used to generate electricity and is an important fuel and raw material for making iron and steel.

Subbituminous typically contains 35%–45% carbon, and it has a lower heating value than bituminous coal.

Lignite contains 25%–35% carbon and has the lowest energy content of all coal ranks. Lignite is crumbly and has high moisture content, which contributes to its low heating value. Lignite is mostly used to generate electricity.