Q. Consider the following statements:
- The molten lava cooled inside the earth's crust forms intrusive igneous rocks.
- Basalt is an example of intrusive igneous rocks.
Which of the above is / are correct?
Answer:
Only 1
Notes: Sometimes the molten magma cools down deep inside the earth’s crust. Solid rocks so formed are called intrusive igneous rocks. Since they cool down slowly they form large grains. Granite is an example of such a rock. Basalt is an example of Igneous rock composed mainly of plagioclase and pyroxene mineral.