Multiple choice

The highest grade and best quality coal is

  1. Lignite

  2. Peat

  3. Bituminous

  4. Anthracite
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Anthracite is the highest grade coal with the highest carbon content (86-97%) and energy value. It has the lowest moisture and volatile matter content, making it the cleanest-burning coal with the highest calorific value. Lignite and peat are low-grade brown coals, while bituminous is intermediate grade.

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