Question

1. in the process of coal formation, the first form of true coal is called ______.

options:

• anthracite
• bituminous coal
• lignite
• peat

Explanation:

Coal formation progresses through stages: peat is a precursor, followed by lignite (the first true coal type), then bituminous coal, and finally anthracite. Lignite forms when peat is compressed and heated, making it the first true coal.

Answer:

lignite