Consider the common ores of various metals. Which of the following pairs represents entirely oxide-b — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Magnetite is $Fe_3O_4$ and Cassiterite is $SnO_2$, both are oxide ores. Cinnabar ($HgS$), Argentite ($Ag_2S$), and Galena ($PbS$) are sulphide ores.