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SSC CGL 2023 PYQ — Question 42

SSC CGL - 14 July 2023 - Shift 3 • General Awareness • Q42

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Which of the following is NOT a type of rock?

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Correct answer: B

Explanation

The correct answer is Option 2 i.e. Trace rock.

Trace rock is NOT a type of rock. The three main types of rocks are:

  1. Igneous rock - formed from cooled and solidified magma or lava.
  2. Metamorphic rock - formed from the alteration of existing rocks under heat and pressure.
  3. Sedimentary rock - formed from the accumulation and compaction of sediments.

"Trace rock" is not a recognized category in geology, whereas the other three are standard classifications of rock types.