Which of the following is easiest to bend?
A.Cast iron
B.Grey pig iron
C.Mottled pig iron
D.Steel
E.Wrought iron
Category: Metallurgy Mcqs
Which metal has the lowest melting point?
A.Iron
B.Copper
C.Silver
D.Magnesium
E.Aluminium
Electric process for steel making is used in which of the following steel plant?
A.Bhilai
B.Bokaro
C.Durgapur
D.TISCO
E.None of the above
Ferrites are a sub-group of
A.Ferromagnetic materials
B.Ferrimagnetic materials
C.Diamagnetic materials
D.Paramagnetic materials
E.None of the above
In Brinell hardness testing the timer for loading is
A.1 second
B.2 seconds
C.5 seconds
D.15 seconds
E.1 minute
The tensile strength of nodular iron may be of the order of
A.100 kg/cm2
B.500 kg/cm2
C.1000 kg/cm2
D.2000 kg/cm2
E.4000 kg/cm2
In which of the following cases creep is an important consideration?
A.Cast iron water pipes
B.Cycle chains
C.Gas turbine blades
D.Steam engine flywheel
E.All of the above
If an article develops insufficient hardening after quenching it could be due to any of the following EXCEPT:
A.Internal stresses in the article before heating
B.Hardening temperature too low
C.Cooling rate too slow
D.Holding insufficient at the hardening temperature
Crucible for melting of metals are made of
A.Cast iron
B.Chromium
C.Hard metal
D.Graphite
E.Tungsten
