Question

Stainless steel is an alloy of chromium and nickel used in domestic utensils and in industry. It does not rust because:

• A. iron forms a hard chemical with chromium
• B. chromium forms a coating of oxide that protects iron
• C. nickel does not rust
• D. the carbon of steel combines with chromium

Answer 1

Answer: (B)

chromium forms a coating of oxide that protects iron

Answer:- (B) chromium forms a coating of oxide that protects iron

Explanation:-

The chromium in the steel forms a very thin layer of oxide $\left({Cr}_2{O}_3\right)$ that prevents the iron from rusting.