Question

How many of the following ores belong to either aluminium or copper?
Bauxite, Siderite, Diaspore, Cuprite, Malachite, Carborundum, Kaolinite, Azurite,
Calamine, Cerussite, Cassiterite, Dolomite

Answer 1

The answer is 6
Aluminium ores are
Bauxite$[A{l}_2{O}_3.n{H}_{2}O]$,Diaspore$\left[AlO\right(OH\left)\right]$,Kaolinite$\left[A{l}_{2}S{i}_2{O}_5\right(OH{)}_4]$
Copper ores are
Cuprite$\left[C{u}_{2}O\right]$,Malachite$\left[C{u}_2\right(C{O}_3\left)\right(OH{)}_2]$, Azurite$\left[C{u}_3\right(C{O}_3{)}_2\left(OH{)}_2\right]$.
The other ores are
Siderite-$\left[FeC{O}_3\right]$
Carborundum-$\left[SiC\right]$
Calamine-$\left[ZnC{O}_3\right]$
Cerussite-$\left[PbC{O}_3\right]$
Cassiterite-$\left[Sn{O}_2\right]$
Dolomite-$\left[CaMg\right(C{O}_3{)}_2]$