Roasting is generally done in case of the following:

Match the following:

List-$I$	List-$II$
$(I)$ Calcination	$a. Fe_2O_3 \cdot nH_2O \rightarrow Fe_2O_3 + nH_2O$
$(II)$ Roasting	$b. 2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2$
$(III)$ Flux	$c. SiO_2 + FeO \rightarrow FeSiO_3$
$(IV)$ Thermite	$d. Cr_2O_3 + 2Al \rightarrow Al_2O_3 + 2Cr$

In the isolation of metals,the calcination process usually results in:

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:

What is the process of heating pyrites to remove sulfur called?

During which of the following processes is an ore converted into its oxide?