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Which of the following is a type of igneous rock? I. Intrusive II. Extrusive

Which of the following is a type of igneous rock? I. Intrusive II. Extrusive Correct Answer Both I and II

The correct answer is Both I and II.

  • Both Intrusive and Extrusive are a type of igneous rock.

Key Points

  • Rocks are formed naturally when the tiny grains of different minerals get compressed due to the pressure exerted on them.
  • The rock formation process is different for different types of rocks.
    • Sedimentary rocks are formed by the accumulation or deposition of mineral or organic particles at the Earth’s surface.
    • Metamorphic rocks are formed when watery hot fluids are subjected to high heat and pressure.
    • Igneous rocks are formed when lava cools and solidifies.​
  • ​Igneous rocks are defined as types of rocks that are formed when molten rock (rock liquefied by intense heat and pressure) cools to a solid-state.
  • ​Igneous rocks are two types
     
Rock Type Description Examples
Intrusive Igneous Rock Intrusive igneous rocks are rocks that crystallize below the earth’s surface resulting in large crystals as the cooling takes place slowly Diorite, granite, pegmatite
Extrusive Igneous Rock Extrusive igneous rocks are rocks that erupt onto the surface resulting in small crystals as the cooling takes place quickly. The cooling rate for a few rocks is so quick that they form an amorphous glass. 

Basalt, Tuff, pumice

Related Questions

Which of the following statements is/are correct regarding Igneous rocks? 1. Intrusive igneous rocks are formed by the cooling of lava on the earth’s surface. 2. Extrusive igneous rocks are formed when magma solidifies below the earth’s surface.
Given below are types of “plutonic, or intrusive, igneous rocks” found in Himalayas. Select the one that is not a type of the “plutonic, or intrusive, igneous rocks”.
Which of the statements is/are correct?
1. Igneous rocks are classified into Extrusive and Intrusive rocks.
2. Sedimentary rocks are also called as Primary rocks
3. Marble is an example of Metamorphic rocks
4. Coal is a sedimentary rock
Which of the following is an example of extrusive igneous rock?
Igneous rocks are formed from molten rock material. Which one of the following is not an igneous rock?
Which of the following is a correct example of an intrusive igneous rock?
________ is an example of intrusive igneous rock.
_________ is an example of intrusive igneous rock.
Consider the statement A, B, C on igneous rocks and choose the correct answer. Statement (A): Sedimentary rocks, when subjected to heat and pressure turn into igneous rocks. Statement (B): These rocks are found both on the earth's crust and deep inside the earth's crust. Statement (C): Granite and Basalt are examples of igneous rocks. 
Consider the following statements about Ashokan rock edicts :  1. Major Rock Edict XIll records Ashoka's remorse at the sufferings caused by his Kalinga campaign.  2. Major Rock Edict X records Ashoka's visit to Lumbini.  3. Major Rock Edict XII refers to Dhamma Mahamattas as a new category of officers instituted by Ashoka.  4. Major Rock Edict XII speaks about showing tolerance towards all sects. Which of the statements given above are correct?