Quiz on Preserving Metals

What is one of the main uses of metals?

• Paper production

• Textile manufacturing

• Water purification

• Food processing and preservation

What is rust primarily recognized as?

• A black residue

• A clear liquid

• A green powder

• A brown to red dust

What is the purpose of a primer when painting metal?

• To form an additional barrier for protection

• To add color

• To make the paint dry faster

• To create a shiny finish

What is galvanisation?

• A process of applying a thin coat of zinc

• A process of painting metal

• A technique for polishing metals

• A method of welding metals

What happens to zinc when it rusts?

• It becomes a liquid

• It turns into zinc oxide

• It evaporates

• It forms zinc carbonate

What is the temperature used in hot-dip galvanisation?

• 200°C

• 300°C

• 460°C

• 100°C

Which method of galvanisation results in a thicker zinc layer?

• Electro-galvanisation

• Hot-dip galvanisation

• Cold galvanisation

• Zinc plating

What is electroplating used for?

• To cut metals

• To coat one metal with another

• To make metals heavier

• To melt metals

What type of paint is recommended for low to medium corrosion on metal?

• Enamel paint

• Water-based acrylic paint

• Oil-based paint

• Spray paint

What is a disadvantage of hot-dip galvanisation?

• It is very expensive

• It is too shiny

• It requires complex preparation

• It is not durable