List of top Chemistry Questions on Metallurgy asked in CUET (PG)

The correct sequence of Extraction of Lanthanoids from monazite sand is: (A) Treat with cold water, (B) Dilute and adjust pH in alkaline range, (C) Digest with Conc. $H_{2}SO_{4}$ at $200^{\circ}C$, (D) Separation by ion Exchange method, (E) Add $Na_{2}SO_{4}$}
In an Ellingham-diagram, if the C/C\(_2\)O line lies below the metal oxide line, then the carbon is used to reduce the metal oxide and itself is oxidized to:
Match the metals (List-I) with their ores (List-II)\[\begin{array}{|c|c|} \hline \textbf{List-I (Metals)} & \textbf{List-II (Ores)} \\ \hline \text{(A) Mercury (Hg)} & \text{(III) Cinnabar} \\ \hline \text{(B) Lead (Pb)} & \text{(IV) Galena} \\ \hline \text{(C) Manganese (Mn)} & \text{(I) Pyrolusite} \\ \hline \text{(D) Zinc (Zn)} & \text{(II) Calamine} \\ \hline \end{array}\]