NTA Abhyas JEE Main2020ChemistryGeneral Principles and Processes of Isolation of MetalsPractice
Which reaction does not occur in roasting process.
Options
- AH g S + 2 H g O → Δ 3 H g + S O 2
- BP b S + 2 P b O → Δ 3 P b + S O 2
- CZ n S + 2 Z n O → Δ 3 Z n + S O 2
- DNone of these
Correct answer
C. Z n S + 2 Z n O → Δ 3 Z n + S O 2
Step-by-step solution
On roasting H g S and P b S sulphides ores are partly converted into their respective oxides. Since the oxides of H g and P b are unstable. While that of zinc is stable, therefore, oxides of H g and P b bring about the reduction of their sulphides to metals, but zinc oxides does not reduce Z n S to Z n metal