Q550
Which is the purest form of iron?
A.
Steel
B.
Cast iron
C.
Pig iron
D.
Wrought iron
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Wrought iron is purest form of iron. It contain 99.5% iron, 0.25% carbon and 0.25% other impurities of S, P, Si etc.