METALLURGY

What is metallurgy?

• study of the physical and chemical behavior of metallic elements and alloys

• study of chemical reaction of metals

• study of economics of metals

• all of the above

In Chemistry, metals are ___________

• elements that form positive ions

• elements that are hard and tough

• elements that are reactive

• all of the above

Which metal has the highest melting point?

• TUngsten

• Iron

• Mercury

• Copper

Which concentration / separation process is suitable for iron ores?

• magnetic separation

• calcination

• roasting

• hydraulic washing

Roasting is used when an ore is subjected to high temperature

• without air

• with air

• with carbon dioxide

• all of the above

Calcination is used when an ore is subjected to high temperature

• without air

• with air

• with carbon dioxide

• all of the above

Resistance to lengthwise stress

• tensile strength

• hardness

• toughness

• ductility

Ability of metal to resist localized plastic deformation or denting and abrasion

• hardness

• ductility

• malleability

• tensile strength

property of a metal that enables it to be stretched out into a thin wire

• Ductility

• Mealleability

• hardness

• elasticity

property of material to deform permanently into sheets under compression without breaking.

• malleability

• ductility

• hardness

• elasticity