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Igneous Rocks

Intrusive ign...

Question

Intrusive igneous rocks cool down _______ and form large crystals.

A

moderately

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B

rapidly

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C

slowly

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D

None of the above

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Solution

The correct option is C slowly
Intrusive igneous rocks cool down slowly. They then form large crystals.

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Similar questions

Q. Intrusive igneous rocks are formed __________.

Q.  Consider the following statements:
1. Intrusive, or plutonic, igneous rock forms when magma is trapped & cooled deep inside the Earth.
2. Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth's surface.
Which of the above statement(s) is/are incorrect ?

Q. Intrusive and extrusive igneous rocks

Q. Q. Assertion (A): Basalt is a fine grained and dark-coloured rock igneous rock which is formed below the earth's surface.
Reason (R): The rate of cooling and solidification of magma inside the earth is very low.

In the context of the above, which of these is correct?

Q. Q. A wavy mass of intrusive rocks found at the base of synclines or at the top of the anticline in folded igneous strata is called:

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