Chemistry-
General
Easy
Question
Which of the following ore is best concentrated by froth-flotation method
- Galena
- Cassiterite
- Magnetite
- Malachite
The correct answer is: Galena
Here only Galena is 
(a sulphide ore).
Cassiterite is 
(oxide ore). Magnetite is 
(Oxide ore) and Malachite is 
(Carbonate ore). The froath floatation process is used to concentrate sulphide ores, based on preferential wetting properties with froating agent and water.
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