When hot and molten magma from the mantle rises up and reaches the crust layer but fails to reach the surface, it cools down and solidifies within the crust. What type of rocks are these?

Sedimentary rocks

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Intrusive igneous rocks

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Extrusive igneous rocks

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Metamorphic rocks

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Solution

The correct option is B Intrusive igneous rocks
When the molten magma cools, it becomes solid. Rocks thus formed are called igneous rocks. Igneous rocks are of two types- intrusive igneous rocks and extrusive igneous rocks. This classification is based on the location in which these rocks are formed.

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Similar questions

Tick the correct answer.

(i) The rock which is made up of molten magma is

(a) Igneous

(b) Sedimentary

(ii) The innermost layer of the Earth is

(a) Crust

(b) Core

(iii) Gold, petroleum and coal are examples of

(a) Rocks

(b) Minerals

(iv) Rocks which contain fossils are

(a) Sedimentary rocks

(b) Metamorphic rocks

(v) The thinnest layer of the Earth is

(a) Crust

(b) Mantle

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