A) 5-10
B) 0.25-2.5
C) 2.5-4.5
D) 0.12-0.2
Correct Answer: C
Solution :
Cast iron is an impure form of iron and contains about 93-94% Fe, 2-4% carbon and remaining are the impurities of Si, P, S and Mn. It is obtained from pig iron.
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