CTET PAPER II 2019 · PYQ · Geography / Rocks · medium
Consider the statements A, B, C on metamorphic rocks and choose the correct answer: A. When igneous and sedimentary rocks are subjected to heat and pressure they change to metamorphic rocks. B. Metamorphic rocks melt to form molten magma when subjected to great heat and pressure. C. Marble is a metamorphic rock.
A.B and C are correct and A is incorrect.
B.A and B are correct and C is incorrect.
C.A, B, C all are correct.✓ Correct
D.A and C are correct and B is incorrect.
Explanation
All three statements are correct. Igneous and sedimentary rocks transform into metamorphic rocks under heat and pressure (A). When metamorphic rocks are subjected to even greater heat and pressure, they melt into magma which can later form igneous rocks (B). Marble is a metamorphic rock formed from limestone (C). This describes the rock cycle.
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