The extraction of zinc from zinc blende is achieved by which of the following processes?

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 major products of the following reaction,$2ZnS_{(s)} + 3O_{2(g)} \xrightarrow{\text{Heat}} \dots$ are

Which of the following factors is of $\text{no significance}$ for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?

The process of heating the ore strongly in excess of air so that the volatile impurities are removed and the ore is changed to oxide is known as

Which of the following on thermal decomposition yields a basic as well as acidic oxide?