1.

Which of the following statements are true for froth floatation process (for a concentration of sulphide ores)?A. Pine oil used as collectorsB. Cresol enhance non wettabillity of the mineral particlesC. `NaCN` selectively prevents `PbS` from coming to the froth but allows `ZnS` to come with the frothD. The mineral particles become wet by oils while the gangue particles by water.

Answer» Correct Answer - A::D
In froth flotation process pine oil used as collector which enhance non-wettability of mineral particles.
Cresol is froth stabilizers.
`NaCN` used as depressant


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