A) Galena
B) Bauxite
C) Cinnabar
D) Cryolite
Correct Answer: D
Solution :
Cryolite\[(N{{a}_{3}}Al{{F}_{6}})\to \]Halide ore \[\left. \begin{matrix} \text{Galena (}PbS) \\ \text{Cinnaber (}HgS\text{)} \\ \end{matrix} \right\}\text{ Sulphide ore}\] Bauxite \[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\to \]Oxide ore
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