Question

Select the correct statements about the Igneous rocks.
A. Igneous rocks are formed from the consolidation of sediments
B. Igneous rocks are formed by solidification of molten material magma on or beneath benefits of earth surface
C. Igneous rock make up 95% of the earth crust
D. Gneiss and slate are the example of igneous rocks
E. Granite and sandstone are the example of igneous rocks

• A. A, C, D only
• B. B, C, D only
• C. B, C, E only
• D. A, B, C, D, E only

Hint:

Igneous rocks form from cooling magma/lava and make up about 95% of the crust. Sedimentary rocks form from consolidated sediments.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:

• The question asks which statements about igneous rocks are correct.

Step 2: Detailed Explanation:

• Statement B is correct: igneous rocks are formed by solidification of molten magma, below or on the Earth's surface.

• Statement C is correct: igneous rocks make up about 95 percent of the Earth's crust.

• Statement A describes the formation of sedimentary rocks, so it is not correct for igneous rocks.

• Statement D names gneiss and slate, which are metamorphic rocks, so it is not correct as a description of igneous rocks.

• Statement E is accepted as correct in the NTA final answer key, which gives the combination B, C, E only (note: standard geology treats sandstone as sedimentary, so this item is debatable).

Step 3: Final Answer:
The correct option is (C) B, C, E only, as per the NTA final answer key.