9. Which is the highest quality of hard coal? A.Anthracite B.Bituminous C.Lignite D.Peat
Answer: Option A Solution: Anthracite, often referred to as hard coal, is a hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals.
