Question

which of the following is a non-ferrous mineral?a)iron ore b) manganese c)gold d)chromite

Answer 1

Generally more costly than ferrous metals, non-ferrous metals are used because of desirable properties such as low weight (e.g. aluminium), higher conductivity (e.g. copper), non-magnetic property or resistance to corrosion (e.g. zinc). Some non-ferrousmaterials are also used in the iron and steel industries.