Top 250+ Solved Metallurgy MCQ Questions Answer
Q. Constantan is an alloy containing
a. Copper and nickel
b. Lead and zinc
c. Copper and zinc
d. Zinc and nickel
e. Lead and copper
Q. Which of the following constituent will increase the hardness of steel?
a. Martensite
b. Pearlite
c. Austenite
d. Cementite
e. All of the above
Q. The depth of hardness in steel can be increased by the addition of
a. Vanadium
b. Chormium
c. Tungsten
d. Sulphur
e. Nickel
Q. Babbit metal is an alloy of
a. Tin, copper and lead
b. Tin, antimony and copper
c. Tin, zinc and copper
d. Tin, antimony and lead
e. Lead, zinc and copper
Q. Hypoeutectoid steel has the structure of
a. Cementite
b. Pearlite
c. Ferrite
d. Ferrite & pearlite
e. None of the above
Q. Which of the following hardening process is generally used for non-ferous materials?
a. Nitriding
b. Age hardening
c. Pack carburizing
d. Cyaniding
e. Flame hardening
Q. Which metal has the highest melting point?
a. Antimony
b. Low specific heat of quenching oil
c. Gold
d. Chromium
e. Stainless steel
Q. Angularity of the square base pyramid in Vickers hardness tester is
a. 90?
b. 11?
c. 120?
d. 150?
e. 136?
Q. Modulus of elasticity for steel is approximately
a. 52 x 106 kg/cm2
b. 1.2 x 106 kg/cm2
c. 12 x 106 kg/cm2
d. 2 x 106 kg/cm2
e. 78 x 106 kg/cm2
Q. Maximum hardness that can be achieved in plain carbon steel is of the order of
a. There is no such limit for hardness
b. 100 - 150 Rockwell 'C'
c. 66 - 67 Rockwell 'C'
d. 50 Rockwell 'C'
e. 80-85 Rockwell 'C'
Q. The principle on which a disappearing filamment type pyrometer works is known as
a. Wien's law
b. Peltier effect
c. Kirchhoff's law
d. Seeback effect
e. Fourier's law
Q. The percentage of sulphur in steel can be reduced by adding
a. Copper
b. Chormium
c. Magnesium
d. Manganese
e. Zinc
Q. Cold worked components are generally subjected to
a. Shot peenling
b. Normalising
c. Hardening
d. Sherodising
e. Annealing
Q. 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