Which of the following ores is concentrated by froth flotation process?

Galena

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Fluorspar

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Pitchblende

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Anglesite

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Solution

The correct option is A Galena
Froth floatation method is commonly used for the concentration of the low-grade sulphide ore. The principal is based on the fact that gangue and ore particles have a different degree of wettability with water and pine oil. The ore particles are wetted by oil whereas gangue particles are wetted by water.
Galena is a sulphide ore $(P b S)$ hence it can be concentrated by froth floatation process. Fluorspar is a halide ore $C a F_{2}$ , Anglesite is a sulphate ore and pitchblende is an oxide ore $(U_{3} O_{8})$ . Hence, these cannot be concentrated by this process.
Hence, (a) is the correct option.

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