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General Principles and Processes of Isolation of Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryGeneral Principles and Processes of Isolation of Elements1 Mark
MCQ
How do we separate two sulphide ores by froth floatation method?
  • A
    By using excess of pine oil.
  • ✓
    By adjusting proportion of oil to water or using depressant.
  • C
    By using collectors and froth stabilities like xanthates.
  • D
    By using some solvent in which one of the sulphides is soluble.
✓

Answer

Correct option: B.
By adjusting proportion of oil to water or using depressant.
By using depressants or adjusting proportion of oil to water, selective prevention of one sulphide ore from coming to the froth is possible.

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