Which one contains the least percentage of carbon ?
Correct answer: D. Wrought iron
- A. Pig iron
- B. High speed steel
- C. Cast iron
- D. Wrought iron
Explanation
Wrought iron contains very little carbon, typically below about 0.1%, while high-speed steel, cast iron and pig iron contain substantially more carbon. Therefore wrought iron has the least carbon among the listed materials.
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