Question

defne roasting and eg

Answer 1

Roasting is a process in which a sulphide ore is strongly heated in the presence of air to convert it into metal oxide.
Example :2ZnS ===Roasting ===>2ZnO+2SO2

Answer 2

in roasting the ore is heated in a regular supply of air in a furnace at a temperature below the MP of the metal......
eg 2ZnS+ 3O2---->2ZnO+2SO2.....
Hope you understand....
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