Question

72. The chemical process in which the ore is heated in the absence of air is called
A) Roasting B) Poling
C) Smelting
D) Calcination​

Answer 1

Answer:

Calcination is the process in which the ore is heated in the absence of air

Generally carbonates and hydroxides are calcined

Answer 2

Answer:

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Explanation:

The metallurgical process in which a metal is obtained in a fused state is called smelting