Purity is a major factor in determining the type of coal used for energy. Which of the following types of coal are correctly paired with a description of its purity and common use?


Anthracite is considered the highest grade coal because it is almost pure carbon, and it is often used for domestic heating. Answer A: Anthracite is considered the highest grade coal because it is almost pure carbon, and it is often used for domestic heating. A

Coking coal is most widely available and contains 60-86% carbon, which makes it ideal for use in coal power plants. Answer B: Coking coal is most widely available and contains 60-86% carbon, which makes it ideal for use in coal power plants. B

Steam coal has a high carbon content with low amounts of impurities, which makes it ideal for use in the steel industry. Answer C: Steam coal has a high carbon content with low amounts of impurities, which makes it ideal for use in the steel industry. C

Lignite is the most mature and purest form of coal, and it is often used for large-scale power generation.