Alloys Quiz

What is an alloy?

• A pure metal

• A mixture of metals

• A non-metallic compound

• A metalloid

Why are alloys generally harder than pure metals?

• They have different sizes of atoms

• They have fewer layers of atoms

• They are heated at higher temperatures

• They contain more carbon

What are the metals present in the alloy bronze?

• Copper and zinc

• Copper and tin

• Iron and carbon

• Aluminium and nickel

What is the main use of bronze?

• Car bodies

• Statues

• Door handles

• Musical instruments

What is the main use of brass?

• Door handles

• Musical instruments

• Statues

• Car bodies

What is the main reason for alloying gold with other metals?

• To make it cheaper

• To make it harder

• To make it shinier

• To make it heavier

What is the purity of 18 karat gold?

• 50%

• 75%

• 25%

• 100%

What is the main use of high carbon steel?

• Chisels

• Car bodies

• Musical instruments

• Door handles

What is the main reason for adding chromium and nickel to stainless steel?

• To make it harder

• To make it cheaper

• To make it lighter

• To make it resistant to corrosion

What is the main advantage of aluminium alloys?

• Low melting point

• Resistance to corrosion

• Brittleness

• High density