Solve this multiple-choice question and choose the correct option.

Mineral processing: The ore-concentration method that exploits density differences between ore and gangue is called what? Think of gravity-based separation methods. Choose the correct option.

Difficulty: Easy

Froth flotation
Magnetic separation
Hydraulic washing (gravity separation)
Leaching

Correct Answer: Hydraulic washing (gravity separation)

Explanation:

ConceptWhen ore and gangue differ in density, gravity separation (also called hydraulic washing, Wilfley table, jigging) can concentrate the ore by washing lighter impurities away.

Final AnswerHydraulic washing (gravity separation)

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