The oil used in the froth floatation method for the purification of ore is _________.

Coconut oil

Olive oil

Pine oil

Castor oil

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Froth Floatation process is suitable for sulphide ores. The process is based on different wetting characteristics of the ore and gangue particles with water and pine oil.

The ore is wetted by oil and impurities are wetted by water. Ore particles are adsorbed on potassium or sodium ethyl xanthate (as a collector) and come at the surface along with the froth. Froth stabiliser (cresols, aniline) stabilise the froth.

So, the correct option is