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Agriculture · Q667

Soil Science

Graduate and Post Graduate · Agriculture · question 667

Q667

Granite and basalt are

A.
Sedimentary rock
B.
Metamorphic rock
C.
Igneous rock
Answer
D.
Clay mineral

Answer: Option C

Solution

Answer: Option C
Solution:
Granite and Basalt are examples of Igneous rocks, which are formed by the solidification and crystallization of magma.
Granite is a coarse-grained intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground.
Basalt is a fine-grained extrusive igneous rock formed from the rapid cooling of low viscosity lava rich in magnesium and iron exposed at or very near the surface of a rocky planet or moon.