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JEE Main202229 Jul 2022Morning ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

In metallurgy the term "gangue" is used for

Options

  1. AContamination of undesired earthy materials.
  2. BContamination of metals, other than desired metal
  3. CMinerals which are naturally occuring in pure form
  4. DMagnetic impurities in an ore.

Correct answer

A. Contamination of undesired earthy materials.

Step-by-step solution

Gangue is generally an unwanted earthy material or impurity that is present in an ore. This can be found in ore deposits where the mineral is present. During the process of extraction, these impurities are mixed up with ore in the form of stone, sand, rock, etc. The gangue must be separated from the mineral with the help of ore dressing or mineral dressing. Concentration of ore is one such process used to remove the impurities, which may depend on the physical and chemical properties. Example: Gravity separation an

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