A. substitutional solution
B. interstitial solid solution
C. intermetallic compounds
D. all of the above
E. none of the above.
Related Mcqs:
- White cast iron contains carbon in the form of__________________?
A. free carbon
B. graphite
C. cementite
D. white carbon
E. ferrite - The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is _______________?
A. 770°C
B. 910°C
C. 1050°C
D. below recrystallisation temperature
E. above recrystallization temperature - An important property of malleable cast iron in comparison to grey cast iron is the high___________________?
A. compressive strength
B. ductility
C. carbon content
D. hardness
E. surface finish - Paramagnetic alpha iron changes to gamma iron at_______________?
A. 770°C
B. 910°C
C. 1440°C
D. 1539°C
E. none of the above - The percentage of carbon in grey iron castings usually varies between __________________?
A. 0.5 to 1%
B. 1 – 2%
C. 2.5 to 4.5%
D. 5 – 7%
E. 7-9%. - In grey cast iron, carbon is present in the form of____________________?
A. cementite
B. free carbon
C. flakes
D. spheroids
E. nodular aggregates of graphite - In malleable iron, carbon is present in the form of___________________?
A. cementite
B. free carbon
C. flakes
D. spheroids
E. nodular aggregates of graphite - In mottled cast iron, carbon is available in__________________?
A. free form
B. combined form
C. nodular form
D. flat form
E. partly in free and partly in combined state - The percentage of carbon in pig iron varies from___________________?
A. 0.1 to 1.2%
B. 1.5 to 2.5%
C. 2.5 to 4%
D. 4 to 4.5%
E. 4.5 to 6.3%. - The percentage of carbon in low carbon steel is__________________?
A. 0.05%
B. 0.15%
C. 0.3%
D. 0.5%
E. 0.7%.
