What happens during the maturation of coal?
A) impurities are driven off
B) the coal is buried and squeezed to a smaller volume
C) the energy content of the coal increases
D) methane is driven off
E) all of these

Question

Quizplus · Accepted Answer

During the maturation of coal, impurities and methane are driven off, the coal is subjected to pressure which buries and squeezes it to a smaller volume, and its energy content increases. This process involves both physical and chemical changes that enhance the coal's quality and energy density.

What Happens During the Maturation of Coal