1.

In metallurgy the term "gangue" is used for: (A) Contamination of undesired earthy materials. (B) Contamination of metals, other than desired metal (C) Minerals which are naturally occuring in pure form (D) Magnetic impurities in an ore.

Answer»

(A) Contamination of undesired earthy materials.

Earthy and undesired materials present in the ore, other then the desired metal, is known as gangue.



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