Question 1
Powder metallurgy is
◦ refining of metal ores using oxidation-reduction reactions.
◦ forming metal parts using heat and small crystals of metal.
◦ refining of metal ores using heat.
◦ forming metal parts using electricity.
◦ refining of metal ores using reactions with aqueous solutions.
Question 2
Which of the following processes is used to form metal components from very small metal particles?
◦ pyrometallurgy
◦ electrometallurgy
◦ powder metallurgy
◦ hydrometallurgy
◦ smelting