A-III, B-I, C-II, D-IV

A-III, B-I, C-IV, D-II

A-IV, B-II, C-I, D-III

A-II, B-I, C-IV, D-III

48

32

16

8

$\mathrm{ZnCO}_3 \longrightarrow \mathrm{ZnO}+\mathrm{CO}_2$

$2 \mathrm{PbS}+3 \mathrm{O}_2 \longrightarrow 2 \mathrm{PbO}+2 \mathrm{SO}_2$

$\mathrm{Fe}_2 \mathrm{O}_3+3 \mathrm{C} \longrightarrow 2 \mathrm{Fe}+3 \mathrm{CO}$

$\mathrm{FeO}+\mathrm{SiO}_2 \longrightarrow \mathrm{FeSiO}_3$

Both $X$ and $Y$ are acidic in nature

$X$ is acidic and $Y$ is neutral in nature

Both $X$ and $Y$ are neutral in nature

$X$ is amphoteric and $Y$ is neutral in nature