Q140
Which of the following forms of coal is the oldest?
A.
Peat
B.
Lignite
C.
Bituminous
D.
Anthracite
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Anthracite is the highest ranked, hardest, oldest, and least common type of coal. It possesses a high energy content, high percentage of carbon (>85%) and relatively little moisture or volatiles.