In the alumino-thermite process,$Al$ acts as:

Which of the following metals is extracted by the amalgamation process?

Which of the following is the mixture used in the thermite process?

Statement $I :$ Leaching of gold with cyanide ion in absence of air $/$ $O_2$ leads to cyano complex of $Au(III)$.
Statement $II :$ Zinc is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statements,choose the correct answer from the options given below.

Extraction of silver is achieved by initial complexation of the ore (argentite) with $X$ followed by reduction with $Y$. $X$ and $Y$,respectively are

Spelter is