How is cas iron different from pig iron ?

Options

A. cast iron is purest form of iron while pig iron is impure
B. cast iron has lower carbon content (3%) as compared to pig iron (4%) and is extremely hard and brittle.
C. pig iron contains many impurities like S, P, Si and Mn while cast iron does not contain any impurity and can be casted into any shape
D. Cast iron is soft and malleable while pig iron heating it with

Answer

B

Explanation

Pig iron contains about 4% C and many other impurities like S, P SI and Mn. Cast iron is made by melting pig iron with scrap iron and coke. It has slightly lower carbon content (3%) and is extremely hard and brittle.