Which of the following coals has the highest calorific value ?
Correct answer: C. Anthracite
- A. Lignite
- B. Sub-bituminous
- C. Anthracite
- D. Peat
Explanation
Anthracite is the highest-rank coal listed, with the greatest carbon content and therefore the highest calorific value. Peat and lignite are lower-rank fuels, while sub-bituminous coal is intermediate.
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