Which one of the following types of coal contains a higher percentage of carbon than the rest?
- ABituminous coal
- BLignite
- CPeat
- DAnthraciteCorrect
Explanation
Anthracite is the highest grade of coal and contains the highest percentage of carbon, typically ranging from 86 to 98 percent. It is the hardest and oldest variety of coal, formed under intense pressure and heat over a long period. Because of its high carbon content, it burns slowly with a blue flame and produces the most energy with the least smoke. In contrast, peat is the first stage of coal formation with the lowest carbon content, followed by lignite and bituminous coal. Therefore, anthracite is the correct answer.
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