Q. Stainless steel does not rust because
A) Chromium and nickel combine with iron
B) Chromium forms an oxide layer and protects iron from rusting
C) Nickel present in it, does not rust
D) Iron forms Ahard chemical compound with chromium present in it
Explanation
(b)
Chromium is more electropositive metal than iron. In stainless steel, chromium forms an oxide layer and thus it protects steel from corrosion.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.