# The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y respectively, are :Option 1)washer woman and concentrationOption 2)fisher man and reductionOption 3)washer man and reductionOption 4)fisher woman and concentration

Froth floatation process -

This method is mainly for the concentration of sulphide ores.The method is based on the different wetting characteristics of the gangue and the sulphide ore with water and oil

- wherein

The gangue preferentially wetted by water and the ore by oil.

froth floatation was discovered by ''washer woman" & this method is used for the "concentration"of sulphide ores.

$\therefore$ Option (1) is correct

Option 1)

washer woman and concentration

Option 2)

fisher man and reduction

Option 3)

washer man and reduction

Option 4)

fisher woman and concentration

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