With respect to an ore,the Ellingham diagram helps to predict the feasibility of its:

Given below are two statements.
Statement $I:$ The choice of reducing agents for metals extraction can be made by using Ellingham diagram,a plot of $\Delta G$ vs temperature.
Statement $II:$ The value of $\Delta S$ increases from left to right in Ellingham diagram.
In the light of the above statements,choose the most appropriate answer from the options given below:

In the metallurgical extraction of copper,the following reaction is used:
$FeO + SiO_{2} \rightarrow FeSiO_{3}$
$FeO$ and $FeSiO_{3}$ respectively are:

Identify the reaction that does not take place in a blast furnace.

Which oxide formation according to the Ellingham diagram shows a graph with a sudden change in slope?

Match column $(I)$ (process) with column $(II)$ (electrolyte)

$(I)$ (process)	$(II)$ (electrolyte)
$(i)$. Downs cell	$(W)$. fused $MgCl_2$
$(ii)$. Dow sea water process	$(X)$. fused $(Al_2O_3 + Na_3AlF_6)$
$(iii)$. Hall-Heroult	$(Y)$. fused $KHF_2$
$(iv)$. Moissan	$(Z)$. fused $(40\% NaCl + 60\% CaCl_2)$

Choose the correct alternate :