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MCQs

Total Questions : 46 | Page 2 of 5 pages
Question 11. Which of the following is not a name for phases present in a system of material in various conditions?
  1.    Phase diagram
  2.    Equilibrium diagram
  3.    Interstitial diagram
  4.    Constitutional diagram
 Discuss Question
Answer: Option C. -> Interstitial diagram
Answer: (c).Interstitial diagram
Question 12. How many types of systems are applicable for phase diagrams?
  1.    One
  2.    Two
  3.    Three
  4.    Four
 Discuss Question
Answer: Option D. -> Four
Answer: (d).Four
Question 13. Which of the following cannot be obtained using a phase diagram?
  1.    Melting temperatures of various phases
  2.    Temperature range for solidification
  3.    Equilibrium solid solubility
  4.    Purity of materials
 Discuss Question
Answer: Option D. -> Purity of materials
Answer: (d).Purity of materials
Question 14. A specific body of material or a series of alloys with the same compositions is/are known as _________
  1.    Component
  2.    System
  3.    Alloy
  4.    Solute
 Discuss Question
Answer: Option B. -> System
Answer: (b).System
Question 15. The maximum concentration of solute that can be added is defined as ____________
  1.    Solution limit
  2.    Solubility limit
  3.    Concentration
  4.    Degrees of freedom
 Discuss Question
Answer: Option B. -> Solubility limit
Answer: (b).Solubility limit
Question 16. At what temperature range is δ iron stable?
  1.    Up to 908°C
  2.    908-1388°C
  3.    1388-1535°C
  4.    1535-1800°C
 Discuss Question
Answer: Option C. -> 1388-1535°C
Answer: (c).1388-1535°C
Question 17. Cementite is magnetic up to ________
  1.    100°C
  2.    250°C
  3.    600°C
  4.    850°C
 Discuss Question
Answer: Option B. -> 250°C
Answer: (b).250°C
Question 18. ___________ is a mixture of radial lamellae of ferrite and cementite.
  1.    Troostite
  2.    Ferrite
  3.    Martensite
  4.    Sorbite
 Discuss Question
Answer: Option A. -> Troostite
Answer: (a).Troostite
Question 19. Which of the following is applicable to α iron?
  1.    Soft
  2.    Ductile
  3.    Magnetic
  4.    Can be hot worked
 Discuss Question
Answer: Option D. -> Can be hot worked
Answer: (d).Can be hot worked
Question 20. Which of the following is a nonmagnetic iron?
  1.    Ferrite
  2.    Austenite
  3.    Cementite
  4.    Alnico
 Discuss Question
Answer: Option B. -> Austenite
Answer: (b).Austenite

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