Multiple choice

Which element is added to iron to make stainless steel?

  1. Cobalt

  2. Chromium

  3. Nickel

  4. Aluminium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chromium is the key element added to iron to make stainless steel. It forms a protective oxide layer that prevents rusting and corrosion. While nickel is sometimes also added, chromium is the essential ingredient.

Keep practicing — related questions