Which of the following is a ferrous mineral?

The correct answer is Option (2) → Iron ore

Minerals are grouped by what they yield. ‘Ferrous’ comes from the Latin ferrum, iron, so a ferrous mineral is one containing iron:

• Metallic, ferrous — iron ore, manganese, nickel, cobalt

• Metallic, non-ferrous — copper, bauxite (the ore of aluminium), lead, tin

• Non-metallic — mica, salt, potash, sulphur, limestone, marble

Of the options, only iron ore is ferrous.