Which of the following materials are usually most ductile?
A.Hexagonal close-packed lattice
B.Face centred cubic lattice
C.Body centred lattice
D.Amorphous
E.Non-metallic
Category: Metallurgy Mcqs
The percentage of sulphur in steel can be reduced by adding
A.Manganese
B.Copper
C.Zinc
D.Magnesium
E.Chormium
Iron ore which is grey to black in colour and is hard and magnetic, is known as
A.Hematite
B.Limonite
C.Siderite
D.Magnetite
E.Ironite
The unit of diffusion coefficient is
A.metre second
B.metre second-1
C.metre2 second-1
D.metre-2 second-1
If a medium carbon hardened steel shows pearlite structure it may be concluded that
A.Steel contains impurities
B.Steel has been slowly cooled in furnace
C.Steel has been quenched in oil
D.Steel has been quenched in water
Which of the following material is generally not used as deoxidiser for producing killed steel?
A.Copper
B.Ferro-silicon
C.Ferro-manganese
D.Aluminium
E.All of the above
A solder consists of
A.Lead and tin
B.Tin and white metal
C.Zinc and lead
D.Zinc and tin
E.Tin and antimony
Which of the following is a non-destructive test?
A.Charpy test
B.Izod Impact test
C.Tensile test
D.Cupping test
E.X-ray test
Austenitic stainless steels contain chromium and nickel in amounts required to assure that even at room temperatures, the steels retain their crystalline structures, which are
A.Face centred cubic
B.Diamond cubic
C.Hexagonal closed-packed
D.Partly amorphous
Th phenomenon of emf development between two diferent metals placed in contact is known as
A.Seeback effect
B.Thomson effect
C.Peltier effect
D.Kelvin effect
E.Thermocouple effect
