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NTA Abhyas NEET2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice

Extraction of zinc from zinc blende is achieved by

Options

  1. ARoasting followed by reduction with carbon
  2. BRoasting followed by reduction with another metal
  3. CElectrolytic reduction
  4. DRoasting followed by self-reduction

Correct answer

A. Roasting followed by reduction with carbon

Step-by-step solution

Zinc blende contains ZnS which is first roasted partially and then subjected to reduction with carbon. ZnS + 3 2 O 2 → ZnO + SO 2 Roasting ZnO + C → Δ Zn + CO ↑ carbon   reduction

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