Multiple choice

Which type of coal has the highest calorific content of all types of coal?

  1. Peat

  2. Coking coal

  3. Bituminous coal

  4. Lignite

  5. Anthracite

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E Correct answer
Explanation

Anthracite has the highest carbon content, the fewest impurities, and the highest calorific content of all types of coal, which also include bituminous coal and lignite. Anthracite is the most metamorphosed type of coal (but still represents low-grade metamorphism), in which the carbon content is between 92.1% and 98%.