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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
Concentration by froth floatation is applicable for which of the following ores?
  • A
    $\mathrm{Al}_2 \mathrm{O}_3$
  • B
    $\mathrm{Te}_3 \mathrm{O}_4$
  • C
    $\mathrm{Te}_2 \mathrm{O}_3 \cdot 3 \mathrm{H}_2 \mathrm{O}$
  • ✓
    $\mathrm{ZnS}$
✓

Answer

Correct option: D.
$\mathrm{ZnS}$
This method is used for those metals whose ore gets preferably wetted by the oil and the gangue by the water. The sulphide ores preferably wetted by the oil and the gangue with the water.

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