Which sequence of coal ranks is listed in order from lowest to highest energy content?
A) anthracite, bituminous, lignite
B) lignite, bituminous, anthracite
C) bituminous, lignite, anthracite
D) bituminous, anthracite, lignite

Question

Quizplus · Accepted Answer

The correct sequence of coal ranks listed in order from lowest to highest energy content is Lignite, Bituminous, and Anthracite. Lignite is a brownish-black coal with high moisture content and low energy content; Bituminous coal is a dense, black coal, often with well-defined bands of bright and dull material, and has significant energy content, and Anthracite is a hard, black coal with a high energy content.

Which Sequence of Coal Ranks Is Listed in Order from Lowest