Minerals and Ores

Minerals are natural substances that have definite ______________ composition.

• physical

• chemical

• biological

Minerals can be identified from its ___________________.

• colour

• lustre

• order

• hardness

Identify the characteristics of the minerals.

• They are mostly solid in form.

• They are of various colours.

• They are pure substances.

• They are exhaustible.

Metallic minerals are further classified as ________________ and ________________.

• ferrous

• feric

• non-ferrous

• non-feric

Ferrous minerals contain iron.

• True

• False

__________________ minerals do not contain any extractable metals and are found in sedimentary rocks.

• Metallic

• Non-metallic

____________ is used for making steel.

• Bauxite

• Gold

• Iron

• Copper

__________________ is used in nuclear power plants as fuel and is also used by the army in specialized ammunitions.

• Iron

• Uranium

• Bauxite

• Silver

__________________ is lightest metal, which is why it is used in the aircraft industry.

• Iron

• Bauxite

• Copper

• Bronze

___________________ is used for making electric and telephone wires, pipes and coins.

• Iron

• Bauxite

• Copper

• Bronze