- Building Materials - Section 1
- Building Materials - Section 2
- Building Materials - Section 3
- Building Materials - Section 4
- Building Materials - Section 5
- Building Materials - Section 6
- Building Materials - Section 7
- Building Materials - Section 8


Building Materials - Engineering
Q1: Basalt isA
sedimentary rock
B
metamorphic rock
C
extrusive igneous rock
D
intrusive igneous rock.
ANS:C - extrusive igneous rock Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals. It most commonly forms as an extrusive rock, such as a lava flow, but can also form in small intrusive bodies, such as an igneous dike or a thin sill. It has a composition similar to gabbro.
Extrusive igneous rocks form when magma reaches the Earth's surface a volcano and cools quickly. |


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