Question

question 9 of 20 : select the best answer for the question. 9. which type of coal has the lowest rank based on its heating capacity? a. anthracite b. lignite c. subbituminous d. bituminous mark for review (will be highlighted on the review page) << previous question

Explanation:

Coal rank is determined by factors like carbon content and heating capacity. Lignite (brown coal) has the lowest carbon content and heating capacity among common coal types. Anthracite has high carbon and heating capacity, bituminous and subbituminous have higher ranks than lignite.

Answer:

B. Lignite