NTA Abhyas NEET2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice
Pb and Sn are extracted from their chief ore by
Options
- Acarbon reduction and self reduction
- Bself reduction and carbon reduction
- Celectrolysis and self reduction
- Dself reduction and electrolysis
Correct answer
B. self reduction and carbon reduction
Step-by-step solution
Pb and Sn are extracted from their chief ore by self reduction and carbon reduction respectively. Self reduction 2 P b S + 3 O 2 → Δ 2 P b O + 2 S O 2 2PbO   +   PbS → Δ 3Pb   +   SO 2   (self   reduction) SnO 2   +   2C → Δ Sn   +   2CO   (Carbon   reduction)