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Question

Which among the following is the type of igneous rock?


A
Sedimentry rocks
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B
Metamorphic rocks
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C
Extrusive rocks
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D
Dolomite rocks
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Solution

The correct option is D Extrusive rocks
The word igneous is taken from a Latin word ‘ignis’ which means fire. Igneous rocks are formed by cooling very hot and molten material called magma. This hot material sometimes rises to the Earth’s surface through cracks caused by earthquakes and volcanic eruptions. The hot material then gets cooled after sometime and solidfies. There are two main types of igneous rocks depending on the way the magma cools and hardens, namely: intrusive igneous rock and extrusive igneous rock.

Chemistry

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