Differentiate between roasting and calcination.Explain them with chemical equations.
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Roasting- Heating of a compound in presence of sufficient amount of heat.
Calcination-Heating of a compound in presence of insufficient amount of heat.
- Reaction= ZnCO3 = ZnO+CO2 [calcination]
- Reaction= ZnS + O2 =ZnO+SO2 [roating]
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