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Question 900002
JEE Chemistry · Easy

Metallurgy and Qualitative Analysis: Concentration methods MCQ

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Concentration methodsEasyQuestion 900002

Question

The froth flotation method is used to concentrate:
  1. A
    Sulphide ores (e.g., copper pyrites, galena)
    Correct
  2. B
    Oxide ores
  3. C
    Carbonate ores
  4. D
    Native metals

Correct answer

Sulphide ores (e.g., copper pyrites, galena)

Explanation

Froth flotation: sulphide ore particles are wetted by oil (pine oil) and float with froth; gangue particles are wetted by water and sink. Used for CuFeS₂ (copper pyrites), PbS (galena), ZnS (zinc blende).

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