Which method is used to separate Galena (PbS) from Zinc... – Chemistry

Chemistryhard · Past Paper

Which method is used to separate Galena (PbS) from Zinc Blende (ZnS)?

AMagnetic separation

BHand picking

CFroth flotation using depressants

DGravity separation

✓ Correct Answer: C — Froth flotation using depressants

Depressants like NaCN are used in froth flotation to selectively prevent one sulphide from forming froth while allowing the other.

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