Question

Which one of the following ores is best concentrated by froth-floatation method?

• A. Magnetite
• B. Cassiterite
• C. Galena
• D. Malachite

Answer 1

Answer: (C)

Galena

Galena ($PbS$) is best concentrated by a froth-floatation method.
This method is used for the concentration of sulphide ores such as galena ($PbS$), zinc blende ($ZnS$) and copper pyrite $\left(CuFe{S}_2\right)$.

Hence, the correct option is $C$