Identify the alloy containing a non-metal as a constituent in it.

Which metals are used in the currency of the $UK$?

Which alloy contains $Cu$,$Sn$ and $Zn$?

Metals are extracted by other methods through the formation of complexes. The complexes formed in these methods are: $I$: Cyanide process,$II$: Mond process,$III$: Photographic fixing process.

Give the correct order of initials $T$ or $F$ for following statements. Use $T$ if statement is true and $F$ if it is false.
$(i)$ In Goldschmidt thermite process,aluminium acts as a reducing agent.
$(ii)$ $Mg$ is extracted by electrolysis of aqueous solution of $MgCl_2$.
$(iii)$ Extraction of $Pb$ is possible by carbon reduction method.
$(iv)$ Red Bauxite is purified by Serpeck's process.

Identify the products of the reaction: $4FeCr_2O_4 + 8Na_2CO_3 + 7O_2 \rightarrow ?$