Galvanizing is a process in which steel is coated with

• A. Tin
• B. Zinc
• C. Lead
• D. Copper

Answer: (B)

Galvanizing coats steel with zinc to protect it from corrosion. Zinc serves as a sacrificial coating: it oxidizes in place of the iron, so the zinc layer corrodes first, forming a protective patina and preventing rust from reaching the steel underneath. The most common method is hot-dip galvanizing, where steel is dipped into molten zinc to create a durable, adherent coating. Tin, lead, and copper aren’t used for this protective galvanizing purpose; they don’t provide the same sacrificial protection or practical protective layer for steel.