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A-III; B-IV; C-V; D-II
$\begin{aligned} & \text {Calamine }=\mathrm{ZnCO}_3 \\ & \text { Bauxite }=\mathrm{Al}_2 \mathrm{O}_3 \cdot 2 \mathrm{H}_2 \mathrm{O} \\ & \text { Kaolinite }=\mathrm{Al}_2 \mathrm{O}_3 \cdot 2 \mathrm{SiO}_3 \cdot 2 \mathrm{H}_2 \mathrm{O} \\ & \text { Cryolite }=\mathrm{Na}_3 \mathrm{AlF}_6\end{aligned}$
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