Question

Various methods are adopted for protecting iron from rust. Which of the following statements is false?

• A. Chrome plating looks good
• B. Ordinary tin plating is cheap but not reliable
• C. Zinc plating is more permanent than chrome plating
• D. Zinc protects iron but does not protect itself

Answer 1

The correct option is D Zinc protects iron but does not protect itself

Zinc protects iron but does not protect itself, Zinc is more reactive than iron, it is used to protect it from corrosion because when oxygen in the air reacts with the surface of zinc, a very dense and impermeable coating of zinc oxide is formed and it is this physical barrier that protects the zinc surface from further attack.

Hence, the given statement is false.