JEE Main · 2022 · 29 Jul 2022 · Shift 1 · General Principles and Processes of Isolation of Metals

In metallurgy the term "gangue" is used for:

(A)Contamination of undesired earthy materials.✓ Correct
(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)

Solution

Gangue refers to the commercially worthless earthy and rocky materials (such as sand, clay, silicates) present in an ore along with the desired metal compound. These impurities must be removed during ore processing.

JEE Main · 2022 · 29 Jul 2022 · Shift 1 · Single correct option

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