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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
Select correct statement $(s)$ about differentiation floatation.
  • A
    It is used to concentrate mixture of sulphides at different stages.
  • B
    Zinc sulphate is used to depress zinc sulphide and $\text{PbS}$ forms froth.
  • C
    Copper sulphate is used to active depressed lead sulphide and $\mathrm{O}_2$​ is blown to make froth.
  • ✓
    All of the above are correct statements.
✓

Answer

Correct option: D.
All of the above are correct statements.
In differentiation flotation, zinc sulphate is depresses zinc sulphide and $\text{PbS}$ forms froth copper sulphate activate depressed lead sulphide. Froth is made by blowing oxygen.

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