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Which of the following elements is present as the impurity to the maximum extent in the pig iron?
A
Phosphorus
B
Manganese
C
Carbon
D
Silicon
Detailed Solution
The iron obtained from the blast furnace is called pig iron.
It contains about 4% carbon and smaller amounts of other impurities such as S, P, Si and Mn.
So carbon is by far the main impurity.
(Cast iron, made by melting pig iron with scrap iron and coke, has about 3% carbon.)
Hence the impurity present to the maximum extent in pig iron is carbon.
It contains about 4% carbon and smaller amounts of other impurities such as S, P, Si and Mn.
So carbon is by far the main impurity.
(Cast iron, made by melting pig iron with scrap iron and coke, has about 3% carbon.)
Hence the impurity present to the maximum extent in pig iron is carbon.