How many of the following are correctly matched for electrolytic reduction in molten state. \beg....

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How many of the following are correctly matched for electrolytic reduction in molten state.
\begin{tabular}{|l|l|l|l|}
\hline & Ore & \begin{tabular}{l}
Reagent \( / \) \\
Process
\end{tabular} & Remark \\
\hline 1. & \( \mathrm{Al}_{2} \mathrm{O}_{3} \) & \begin{tabular}{l}
\( \mathrm{AlF}_{3} \) and \( \mathrm{CaF}_{2} \) \\
added
\end{tabular} & Decrease M.P. \\
\hline 2. & \( \mathrm{MgCl}_{2} \) & \( \mathrm{KCl}, \mathrm{CaCl}_{2} \) & \begin{tabular}{l}
Increase \\
conductivity
\end{tabular} \\
\hline 3. & \( \mathrm{NaCl} \) & \( \mathrm{AlCl}_{3} \) & Decrease M.P. \\
\hline 4. & \( \mathrm{AlF}_{3} \) & Haroult process & \( \mathrm{Al} \) form at anode \\
\hline 5. & \( \mathrm{MgBr}_{2} \) & Dow process & \( \mathrm{Br}_{2} \) form at anode \\
\hline 6. & \( \mathrm{Al}_{2} \mathrm{O}_{3} \) & conc. NaOH & Leaching process \\
\hline 7. & \( \mathrm{Carnallite}^{\text {Dow process }} \) & \begin{tabular}{l}
Directly applied to \\
carnallite crystals.
\end{tabular} \\
\hline
\end{tabular}


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