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Building Materials

Q1:

The rocks formed from molten magma, are called

A sedimentary rocks

B igneous rocks

C metamorphic rocks

D none of these.

ANS:B - igneous rocks

Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.

Answer: Igneous Rock. Under constant effects of temperature and excessive pressure, Igneous & Sedimentary rocks gets converted into Metamorphic Rocks, and this process is called Metamorphism.



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