White metal contains
A.Lead and bismuth
B.Mercury and zinc
C.Lead and zinc
D.Lead and copper
E.Copper, zinc and mercury
Category: Metallurgy Mcqs
The allotropic form of iron not having body centred cubic lattice is
A.Alpha iron
B.Beta iron
C.Gamma iron
D.Delta iron
E.All of the above
For acid resistance cast iron should have silicon percentage of
A.1 percent
B.2 percent
C.10 percent
D.15 percent
E.25 percent
The hardness obtained by hardening process does not depend upon
A.Carbon content
B.Work size
C.Atmospheric temperature
D.Quenching rate
The fastest cooling rate is achieved when steel is quenched in
A.Brine
B.Air
C.Oil
D.Water
If the structure of a sample consists of pearlite, cementite and free carbon, the sample may be
A.Cast iron
B.Alloy steel
C.Dead mild steel
D.Eutectoid steel
E.None of the above
Which of the following furnace is used for steel only?
A.Cupola
B.Air furnace
C.Open hearth furnace
D.Indirect arc furnace
Which allotropic form of iron does not have body centred cubic lattice?
A.Alpha iron
B.Beta iron
C.Gamma iron
D.Delta iron
E.All of the above
Stellite contains
A.Cobalt, chromium and tungsten
B.Cobalt, vanadium and nickel
C.Nickel, copper and zinc
D.Nickel, zinc and aluminium
E.Copper, tin and lead
Dilute nitric acid applied to a clean fracture of wrought iron gives
A.White stain
B.Greenish stain
C.Blue stain
D.Grey stain
E.Black stain
