Which is not an ore of iron?
Magnetite
Haematite
Limonite
Cuprite
Cu2O - cuprite, is an ore of copper. Limonite is hydrated iron (III) oxide. Magnetite is Fe3O4 while haematite is Fe2O3.
An ore of manganese metal is: (a) bauxite (b) haematite (c) cuprite (d) pyrolusite
An important ore of zinc metal is : (a) calamine (b) cuprite (c) pyrolusite (d) haematite