When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.
A. Cementite
B. Free graphite
C. Both A and B
D. None of these
Answer: Option B
Solution (By Examveda Team)
When filing or machining cast iron makes our hands black, then it shows that free graphite is present in cast iron.This Question Belongs to Mechanical Engineering >> Engineering Materials
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