AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
(C) Anthracite
Anthracite is the highest quality hard coal, as stated in the chapter. It has the highest carbon content among all coal types.
Source: Conventional Sources of Energy, chapter 5
---
The passage directly states: "Anthracite is the highest quality hard coal." The coal types in increasing order of quality are: Peat → Lignite → Bituminous → Anthracite. This sequence (also confirmed by the crossword clue "Highest quality hard coal") is a commonly tested fact. Always remember Anthracite = best quality = highest carbon content.