Multiple choice

Which of the following has the minimum carbon content?

  1. Steel

  2. Pig iron

  3. Wrought iron

  4. Cast iron
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Wrought iron is the purest form of commercial iron, containing the lowest percentage of carbon (typically less than 0.08 percent). In contrast, pig iron and cast iron have much higher carbon contents.

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