Question

differenciate between calcination and roasting explain with suitable chemical equations how is zinc extracted from its ore

Answer 1

Calculation is a process of heating an ore strongly in limited supply of air whereas rosting is a process of heating ore strongly in the presence of excess supply of air.

Zinc is extracted from its ore with the help of carbon.

Carbon in the form of coal is cheapest reducing agent. It combines with oxygen to form carbon monoxide sir to which metal oxide is reduced to metal.

Zno + c ---- zn + co.

The reduction of metal oxide with coke is called smelting.