Multiple choice

Alloy steel containing chromium, to resist rusting is known as _____.

  1. wrought iron

  2. cast iron

  3. hard steel

  4. stainless steel

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Stainless steel is an alloy of iron containing chromium, which creates a thin, protective layer of oxide on the surface. This layer prevents the iron from reacting with oxygen and water, thereby resisting rust and corrosion.

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