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Mechanical - 540 Unit 2 Material Science and Heat Treatment - MCQ

51)   

What is the primary goal of hardening in steel? 

A.
B.
C.
D.
Answer: A
52)   

Which property makes copper suitable for electrical wiring? 

A.
B.
C.
D.
Answer: B
53)   

What is the main purpose of the normalizing process?

A.
B.
C.
D.
Answer: A
54)   

Which type of cast iron is known for its excellent damping properties?

A.
B.
C.
D.
Answer: A
55)   

Which phase transformation occurs during quenching? 

A.
B.
C.
D.
Answer: B
56)   

Which property is essential for thermal insulating materials? 

A.
B.
C.
D.
Answer: A
57)   

What property of alloy steel is improved by adding molybdenum?

A.
B.
C.
D.
Answer: A
58)   

What is the effect of tempering on hardened steel? 

A.
B.
C.
D.
Answer: B
59)   

How does vulcanization improve the properties of rubber? 

A.
B.
C.
D.
Answer: A
60)   

What microstructure is formed in steel when cooled slowly below its lower critical temperature? 

A.
B.
C.
D.
Answer: A
61)   

What is the main benefit of annealing metal? 

A.
B.
C.
D.
Answer: B
62)   

Which element in alloy steel is responsible for improving its wear resistance?

A.
B.
C.
D.
Answer: A
63)   

What contributes to the elasticity of rubber? 

A.
B.
C.
D.
Answer: A
64)   

What is a major disadvantage of high-carbon steel?

A.
B.
C.
D.
Answer: A
65)   

Why is case hardening preferred for gears?

A.
B.
C.
D.
Answer: B
66)   

Which property is most important for materials used in bridge construction?

A.
B.
C.
D.
Answer: A
67)   

What gives white cast iron its high hardness? 

A.
B.
C.
D.
Answer: A
68)   

What does UCT stand for in heat treatment? 

A.
B.
C.
D.
Answer: A
69)   

Which non-ferrous alloy is used in aircraft manufacturing? 

A.
B.
C.
D.
Answer: B
70)   

At what temperature is annealing typically performed for steel?

A.
B.
C.
D.
Answer: B
71)   

What is the primary use of tool steel?

A.
B.
C.
D.
Answer: B
72)   

What is the main advantage of heat treatment in metals?

A.
B.
C.
D.
Answer: B
73)   

Which of the following properties is improved by vulcanization in rubber?

A.
B.
C.
D.
Answer: B
74)   

Which element is primarily responsible for the hardness of cast iron? 

A.
B.
C.
D.
Answer: B
75)   

What is the carbon content in high-carbon steel? 

A.
B.
C.
D.
Answer: C