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NEETChemistryGeneral Principles and Processes of Isolation of Metals

What is the specific action of NaCN in the Froth Floatation method concerning ZnS and PbS?

Options

  1. AIt prevents both ZnS and PbS from coming to the froth
  2. BIt selectively prevents PbS from coming to the froth
  3. CIt selectively prevents ZnS from coming to the froth
  4. DIt enhances the coming of ZnS and PbS to the froth

Correct answer

C. It selectively prevents ZnS from coming to the froth

Step-by-step solution

NaCN selectively prevents ZnS from coming to the froth in the Froth Floatation method.

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