A) cast iron
B) pig iron
C) wrought iron
D) steel
Correct Answer: C
Solution :
The purest form of iron is wrought iron. It contains \[98.8%\]to \[99.9%\]\[Fe\] and \[0.1\] to \[0.25%\] carbon and rest are the impurities of \[S,\] \[Si\,\,P,\]\[Mn\] etc.
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