Q.1
In an iron carbon alloy, the mechanical properties are dependent on the micro structure.
  • a) True
  • b) False
Q.2
Which of the following is present in pearlite?
  • a) Spherodite
  • b) Bainite
  • c) Ledeburite
  • d) Ferrite
Q.3
Which of the following is true?
  • a) Fine pearlite is harder than coarse pearlite
  • b) Fine pearlite is softer than coarse pearlite
  • c) Fine pearlite is more ductile than coarse pearlite
  • d) Toughness of steel decreases with increase in carbon percentage
Q.4
Which is the most tough among the steels given their carbon composition?
  • a) 0.1%
  • b) 0.2%
  • c) 1.5%
  • d) 2.5%
Q.5
Which of the following is present in spherodite?
  • a) Pearlite
  • b) Bainite
  • c) Ledeburite
  • d) Ferrite
Q.6
Which of the following is present in bainite?
  • a) Ferrite
  • b) Bainite
  • c) Ledeburite
  • d) α-Ferrite
Q.7
Which among the following is the strongest?
  • a) Austenite
  • b) Pearlite
  • c) Bainite
  • d) Martensite
Q.8
In which of the following steels there is a chance of quenching cracks being formed?
  • a) 0.2% carbon
  • b) 0.4% carbon
  • c) 0.5% carbon
  • d) 0.6% carbon
Q.9
At what temperature is martensite heated in tempering? (in degree Celsius)
  • a) 727
  • b) 627
  • c) 327
  • d) 927
Q.10
Tempered martensite has better ductility than martensite.
  • a) True
  • b) False
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