Metals and Metallic Alloys Quiz

What is a common characteristic of metals?

• They are typically soft and brittle.

• They have poor electrical conductivity.

• They are typically hard and shiny.

• They are not chemically reactive.

What is the process of increasing the hardness of a metal through cold working called?

• Alloying

• Tempering

• Work hardening

• Annealing

Which of the following is a non-ferrous metal?

• Stainless Steel

• Aluminum

• Cast Iron

• Mild Steel

What is the primary benefit of recycling metals compared to extracting raw materials?

• It uses more energy.

• It produces more waste.

• It uses less energy and produces less waste.

• It degrades the quality of metals.

What is the term for the slow expansion or deformation of a material over time?

• Alloying

• Tempering

• Creep

• Oxidation

Which alloy is known for its corrosion resistance and is commonly used in marine and plumbing fittings?

• Brass

• Bronze

• Cast Iron

• Steel

What is the main component added to iron to produce carbon steel?

• Chromium

• Nickel

• Carbon

• Copper

What is the purpose of tempering a metal after work hardening?

• To increase hardness and stiffness

• To reduce hardness and increase toughness

• To make the metal more brittle

• To increase malleability and ductility

Which of the following is a characteristic of super alloys?

• Low mechanical strength

• High resistance to creep

• Low resistance to oxidation

• Poor surface stability

What is the term for the reaction of a metal with oxygen, commonly seen as rust?

• Creep

• Tempering

• Alloying

• Oxidation