The main function of a frother is:

To stick to the ore and then take it to the top

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To make the insoluble ore soluble

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To make the ore hydrophobic

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None of these

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Solution

The correct option is A To stick to the ore and then take it to the top
Frothers are the agents (as pine oil or cresol) that reduce the surface tension of a liquid and consequently decrease the wettability of the particles to be recovered by that liquid in the froth floatation process. The ore particles get wet by froth which helps it to rise up.

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