Question:
Coal is rock of .
Coal is rock of .
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Coal forms from buried plant matter over time.
Updated On: Jul 3, 2026
- Sedimentary type
- Metamorphic origin
- Glacial origin
- Igneous type
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The Correct Option is A
Solution and Explanation
Step 1: Coal forms from the accumulation and compaction of plant remains in swamps over long periods of time.
Step 2: This layered, organic accumulation process is the same process that forms sedimentary rocks, so coal is classified as an organic sedimentary rock.
Step 3: It is not formed by heat and pressure acting on existing rock (metamorphic), by ice action (glacial), or by cooling magma (igneous), so the answer is Sedimentary type.
Step 2: This layered, organic accumulation process is the same process that forms sedimentary rocks, so coal is classified as an organic sedimentary rock.
Step 3: It is not formed by heat and pressure acting on existing rock (metamorphic), by ice action (glacial), or by cooling magma (igneous), so the answer is Sedimentary type.
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