Extraction of zinc from zinc blende $(ZnS)$ is achieved by:

In metallurgy,select the correct option using $T$ (True) or $F$ (False) for the statements given regarding calcination:
$(1)$ It is used to remove moisture.
$(2)$ It is used to decompose carbonates.
$(3)$ It is used to remove volatile impurities.

Reduction for which ore should be partially roasted is

In order to bring initial chemical change in the ore,the process of heating of ore below its melting point is known as

The process of heating an ore in the presence of excess air to a temperature below its melting point is called:

The pair that does $Not$ require calcination is