__________is a major component of many igneous minerals including mica and clays.
iron
copper
aluminium
magnesium
Bauxite is an important ore of ___________
aluminum
zinc
Kaolinite is an important ore of __________
Iron
Haematite is an ore of __________
The entire scientific and technological process used for the isolation of the metal from its ore is known as _______________
Concentration
metallurgy
leaching
roasting
_________are naturally occurring chemical substances in the earth's crust obtainable by mining.
metals
minerals
Ores
metalloids
The molecular formula of copper glance is ___________
Cu2S
Cu2O
CuCO3.Cu(OH)2
CuFeS2
The molecular formula of calamine is ____________
ZnS
ZnCO3
ZnO
ZnSO4
The molecular formula of iron pyrites is ___________
Fe2O3
Fe3O4
FeCo3
FeS2
___________is the most abundant metal.
