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  • Question
  • Ferrite and pearlite makes the steel soft and ductile.


  • Options
  • A. Agree
  • B. Disagree

  • Correct Answer
  • Agree 


  • Engineering Materials problems


    Search Results


    • 1. The type of space lattice found in gamma-iron is

    • Options
    • A. face centred cubic space lattice
    • B. body centred cubic space lattice
    • C. close packed hexagonal space lattice
    • D. none of these
    • Discuss
    • 2. The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is

    • Options
    • A. chromium
    • B. nickel
    • C. vanadium
    • D. cobalt
    • Discuss
    • 3. The ability of a material to absorb energy in the plastic range is called

    • Options
    • A. resilience
    • B. creep
    • C. fatigue strength
    • D. toughness
    • Discuss
    • 4. Iron ore is, usually, found in the form of

    • Options
    • A. oxides
    • B. carbonates
    • C. sulphides
    • D. all of these
    • Discuss
    • 5. The lower critical point for all steels is

    • Options
    • A. 600°C
    • B. 700°C
    • C. 723°C
    • D. 913°C
    • Discuss
    • 6. The heat treatment process used for softening hardened steel is

    • Options
    • A. carburising
    • B. normalising
    • C. annealing
    • D. tempering
    • Discuss
    • 7. The lower critical temperature

    • Options
    • A. decreases as the carbon content in steel increases
    • B. increases as the carbon content in steel increases
    • C. is same for all steels
    • D. depends upon the rate of heating
    • Discuss
    • 8. Which of the following material has maximum ductility?

    • Options
    • A. Mild steel
    • B. Copper
    • C. Nickel
    • D. Aluminium
    • Discuss
    • 9. The percentage of carbon in cast iron varies from

    • Options
    • A. 0.1 to 0.5
    • B. 0.5 to 1
    • C. 1 to 1.7
    • D. 1.7 to 4.5
    • Discuss
    • 10. In full annealing, the hypo-eutectoid steel is heated from 30° C to 50° C above the upper critical temperature and then cooled

    • Options
    • A. in still air
    • B. slowly in the furnace
    • C. suddenly in a suitable cooling medium
    • D. any one of these
    • Discuss


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