The presence of sulphur in pig iron makes
A
It easily machinable
B
It brittle
C
It hard
D
The casting unsound
Correct Answer: The casting unsound
As sulfur in Pig Iron make the cast iron manufacturing unsound and not pure because sulfur works as a impurities in Pig iron. Iron sulphide being very brittle, whole alloy becomes brittle. Presence of sulfur tends to make iron hard and produces unsound castings.