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Forth floatation process of concentration is based on the:

1. preferential wetting properties with the frothing agent and water
2. difference in the specific gravities of gangue and ore particles
3. difference in solubility of ganaue and ore particles in frothing agent and water
4. difference in reactivity of gangue and ore particles with water and frothing agent.

Correct answer: preferential wetting properties with the frothing agent and water

Solution

Froth flotation works because one component is preferentially wetted by water while the other is preferentially wetted by the frothing agent and air bubbles. This difference in wetting behavior lets the desired particles rise with the froth.

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