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 :
washer woman and concentration
fisher man and reduction
washer man and reduction
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
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.
Option (1) is correct
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