Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 1 (Q.No. 31)

Building Materials

31.

Gniess is obtained from

igneous rocks

metamorphic rocks

sedimentary rocks

sedimentary metamorphic rocks.

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

71 comments Page 3 of 8.

Manish Thakur said: 7 years ago

Gneiss is obtained from Granite (Igneous rock) because of metamorphism.

So, A is correct. More suitable answer could be Igneous Metamorphic Rock.

Subhodeep said: 8 years ago

Correct Answer is sedimentary-metamorphic rocks because Gniess is obtained from igneous as well as sedimentary rocks after the metamorphic action.

Sohan Jangra said: 9 years ago

Gneiss is a metamorphic rock with a banded or foliated structure, typically coarse-grained and consisting mainly of feldspar, quartz, and mica.

Gopika said: 7 years ago

Gniess is a metamorphic rock. And it is obtained from granite, which is igneous plutonic rock. So I think option A gives the correct answer.

Baloch said: 9 years ago

Gniess made through metamorphic action of a sedimentary rock called 'laterite'.

In this way guiess is sedimentary metamorphic rock.

Suman said: 5 years ago

Shale (S) >Slate (M) >Phyllite (M) >Schist (M) >Gneiss (M).

So Granite is obtained from sedimentary-metamorphic rocks!

PRADEEP CHAUHAN said: 8 years ago

Gneiss is a metamorphic rock which obtained form conversion of granite, therefore, I think metamorphic rock is the correct answer.

Vinoth said: 8 years ago

Gniess is obtained by metamorphism action of granite. The granite is igneous. So the gneiss obtained from igneous rock.

Adnan Guru said: 9 years ago

Igneous rock is decomposed to gneiss by metamorphic action. D is absolutely wrong. The right answer will be A.

Ravi S Murnal said: 8 years ago

Gneiss IS a Metamorphic Rock ------ Original Rock is Granite (Igneous Rock) so answer is Igneous Metamorphic.

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