i. It is a sedimentary rock. |
ii. It is composed of mainly quartz, feldspar and mica. |
iii. It is used for separating pure metals from their ores. |
iv. It is an igneous rock. |
A) i and ii
B) ii and iii
C) ii and iv
D) i and iii
E) None of these
Correct Answer: C
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