Battle Against Rust: Understanding Corrosion Protection

What is the process of galvanization?

• Coating metal with a layer of another type of metal to prevent corrosion

• Heating metal to a high temperature to form a protective oxide layer

• Applying a thin layer of paint to metal surfaces

• Adding other metals to form a stronger alloy

Which metal is most commonly used in galvanization to protect steel from corrosion?

• Copper

• Aluminum

• Zinc

• Lead

What is the primary purpose of metal plating?

• To make the metal look shiny

• To increase the electrical conductivity

• To protect the base metal from corrosion

• To make the metal heavier

Which of the following is NOT a benefit of painting metals?

• Aesthetic enhancement

• Corrosion protection

• Increased electrical conductivity

• Barrier against moisture and chemicals

What is an alloy?

• A pure metallic element

• A mixture of two or more metals

• A type of metal plating

• A metal coated with paint

How does alloying help in protecting metal from corrosion?

• By making the metal more flexible

• By reducing the metal's melting point

• By increasing the hardness and strength of the metal

• By creating a more corrosion-resistant composition

What is the term for the electrochemical process used to deposit a metal coating on an object?

• Galvanization

• Electroplating

• Anodizing

• Powder coating

Which of the following is a common method used to apply paint to metal surfaces for corrosion protection?

• Welding

• Soldering

• Spraying

• Forging

Why is zinc often used in galvanization instead of other metals?

• It is the cheapest metal available

• It forms a sacrificial layer that corrodes before the steel does

• It has the highest melting point

• It is the most abundant metal on Earth

What is the main advantage of using stainless steel, an alloy, over regular steel?

• It is less expensive than regular steel

• It can be magnetized more easily than regular steel

• It has a higher resistance to corrosion due to the presence of chromium

• It is lighter than regular steel