Question

Sulphide ores are common for the metals:

• A. Ag, Cu and Pb
• B. Ag, Cu and Sn
• C. Ag, Mg and Pb
• D. Al, Cu and Pb

Answer 1

The correct option is A

Ag, Cu and Pb

All ores are minerals but not all minerals are ores.
For a mineral to be an ore, it should be profitable to extract the metal from the ore.

Argentite is $A{g}_{2}S$ - an important ore of silver.
Likewise, galena - $PbS$, is an important ore for lead.
Copper has several sulphide ores including $C{u}_{2}S$, $CuS$ and $CuFe{S}_2$.