Zinc is obtained from zinc blende by:

Reduction for which ore should be partially roasted is

The important step in the extraction of metal from carbonate ore is

Consider two chemical reactions $(A)$ and $(B)$ that take place during metallurgical processes:
$(A)$ $ZnCO_{3(s)} \longrightarrow ZnO_{(s)} + CO_{2(g)}$
$(B)$ $2ZnS_{(s)} + 3O_{2(g)} \longrightarrow 2ZnO_{(s)} + 2SO_{2(g)}$
The correct names for these processes are:

The chemical reaction that involves the roasting process is:

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