Froth flotation process is based upon :

Magnetic property of gangue

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Specific gravity of ore particle

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Preferential wetting of ore particle by oil

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Preferential wetting of gangue particle by oil

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Solution

The correct option is C Preferential wetting of ore particle by oil
Froth flotation is a physicochemical process who's basic principle is to separate particles based on differences in surface wettability of those particles. Naturally hydrophobic (dislike water) particles (e.g. coal particles), become selectively attached to air bubbles and are carried to the surface of the pulp. So the correct option is C

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