Question : Which of the following is not a type of rock?
Option 1: Igneous rock
Option 2: Trace rock
Option 3: Metamorphic rock
Option 4: Sedimentary rock
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Correct Answer: Trace rock
Solution : The correct answer is Trace Rock.
"Trace rock" is not a recognised type of rock.
- Igneous rock is formed from the solidification of molten material (magma or lava) and includes rocks like granite and basalt.
- Metamorphic rock results from the alteration of pre-existing rocks due to heat, pressure, or chemical changes; examples include marble and slate.
- Sedimentary rock forms from the accumulation and compaction of sediment, such as sandstone or limestone.
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