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Which of the following statement regarding froth floatation method is not correct?

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The mineral particles become wet by oils

The gangue particles become wet by water.

In case of an ore containing ZnS and PbS, the depressant used is NaCN.

NaCN selectively prevents PbS from coming to the froth but allows ZnS to come with the froth.

answer is D.

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Detailed Solution

In case of an ore containing ZnS and PbS, the depressant used is NaCN, NaCN selectively prevents ZnS from coming to the froth but allows PbS to come with the froth

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