Civil Engineering - Building Materials - Discussion
Discussion Forum : Building Materials - Section 1 (Q.No. 31)
31.
Gniess is obtained from
Discussion:
71 comments Page 2 of 8.
Mohan said:
4 years ago
Gneiss is formed from another metamorphic rock called schist, which itself started out life as a sedimentary rock called shale.
So, option D is correct.
So, option D is correct.
(1)
Kazi said:
4 years ago
Gneiss is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Orthogneiss is gneiss derived from igneous rock (such as granite). Paragneiss is gneiss derived from sedimentary rock (such as sandstone).
Sunil said:
4 years ago
Gneiss is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Orthogneiss is gneiss derived from igneous rock (such as granite). Paragneiss is gneiss derived from sedimentary rock (such as sandstone).
Khim khatri said:
5 years ago
Granite changes to gneiss so option may be A again it can be obtained from conglomerate which is sedimentary rock so option may be C ie both from igneous and metamorphic.
Damodar said:
5 years ago
Option A is the correct answer.
Hardik said:
5 years ago
Gneiss is obtained from granite (igneous rock) by metamorphic process. So the answer must be A.
Suman said:
5 years ago
Shale (S) >Slate (M) >Phyllite (M) >Schist (M) >Gneiss (M).
So Granite is obtained from sedimentary-metamorphic rocks!
So Granite is obtained from sedimentary-metamorphic rocks!
Dinesh Khatri said:
5 years ago
It is also obtained from Conglomerate. So answer is D.
Angira said:
5 years ago
Granite is converted into Gneiss by metamorphic action.
Mohanraj joshi said:
5 years ago
It should be a metamorphic rock.
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