Coal is found in which types of rocks?
Last updated Aug 29, 2026
Correct Answer:
Option B —
Sedimentary
Why Sedimentary? Coal is formed from the remains of ancient plants that accumulated in swamps and bogs millions of years ago. Over time, these layers of organic matter were buried under sediment (like mud and sand). The intense pressure and heat from the overlying layers compacted and chemically altered the plant debris, turning it into sedimentary rock.
Why not others? Igneous rocks are formed from cooled magma or lava, where the extreme temperatures would completely destroy organic plant matter. Metamorphic rocks are formed when existing rocks are altered by intense heat and pressure; while high-grade coal (like Anthracite) undergoes a process similar to metamorphism, coal as a primary rock classification is universally categorized under sedimentary rocks.
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
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