Which of the following statement is not correct regarding calcination ?

Which of the following reaction is Not nentropy driven with reference to extractive metallurgy? (unbalanced reactions)

Consider two chemical reactions $(A)$ and $(B)$ that take place during metallurgical process:

$(A)$ $\mathrm{ZnCO}_{3(\mathrm{~s})} \longrightarrow \mathrm{A}{\longrightarrow} \mathrm{ZnO}_{(\mathrm{s})}+\mathrm{CO}_{2(\mathrm{~g})}$

$(B)$ $2 \mathrm{ZnS}_{(\mathrm{s})}+3 \mathrm{O}_{2(\mathrm{~g})} \longrightarrow \mathrm{ZnO}_{(\mathrm{s})}+2 \mathrm{SO}_{2(\mathrm{~g})}$

The correct option of names given to them respectively is:

Consider the following metallurgical processes

$(i)$ Heating impure metal with $CO$ and distilling the resulting volatile carbonyl (boiling point $43\,^oC$) and finally decomposing at $150\,^oC$ to $200\,^oC$ to get the pure metal.

$(ii)$ Heating the sulphide ore in air until a part is converted to oxide and then further  heating in the absence of air to let the oxide react with unchanged sulphide.

$(iii)$ Electrolysing the molten electrolyte containing approximately equal amounts of  the metal chloride and $CaCl_2$ to obtain the metal. 

The process used for obtaining sodium, nickel and copper are, respectively,

Which method of purification is represented by the following equation ?

$Ti(s) + 2I_2(g) \xrightarrow{{523\,K}} $ $Ti{I_4}(g)\xrightarrow{{1700\,K}}Ti(s) + 2{I_2}(g)$