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

26)   

Which type of cast iron is known for its excellent wear resistance? 

A.
B.
C.
D.
Answer: B
27)   

What is one of the major benefits of annealing?

A.
B.
C.
D.
Answer: B
28)   

Which steel has the lowest carbon content? 

A.
B.
C.
D.
Answer: C
29)   

Why is mica used as an insulating material?

A.
B.
C.
D.
Answer: B
30)   

What element is typically added during carburizing in case hardening?

A.
B.
C.
D.
Answer: A
31)   

What is the primary microstructure of steel at room temperature in its softest state?

A.
B.
C.
D.
Answer: B
32)   

What is the primary purpose of hardening? 

A.
B.
C.
D.
Answer: B
33)   

Which non-ferrous alloy is commonly used for making coins?

A.
B.
C.
D.
Answer: B
34)   

What happens to steel when it is heated above its UCT?

A.
B.
C.
D.
Answer: B
35)   

Why is grey cast iron widely used in engine blocks?

A.
B.
C.
D.
Answer: B
36)   

What is added to rubber during vulcanization?

A.
B.
C.
D.
Answer: A
37)   

What is the difference between normalizing and annealing?

A.
B.
C.
D.
Answer: C
38)   

Which property of timber makes it suitable for use in construction? 

A.
B.
C.
D.
Answer: B
39)   

Which of the following is NOT a purpose of heat treatment?

A.
B.
C.
D.
Answer: C
40)   

Which of the following properties determines a metal's ability to resist deformation?

A.
B.
C.
D.
Answer: A
41)   

What is the typical carbon content range in mild steel?

A.
B.
C.
D.
Answer: B
42)   

Which material is commonly used as an electrical insulator? 

A.
B.
C.
D.
Answer: B
43)   

At what temperature range is tempering usually performed? 

A.
B.
C.
D.
Answer: B
44)   

Why is white cast iron brittle? 

A.
B.
C.
D.
Answer: B
45)   

Which of the following elements improves corrosion resistance in alloy steel?

A.
B.
C.
D.
Answer: B
46)   

What happens during the annealing process?

A.
B.
C.
D.
Answer: C
47)   

Which non-ferrous metal is primarily used in beverage cans?

A.
B.
C.
D.
Answer: B
48)   

Which property of steel is enhanced by the hardening process? 

A.
B.
C.
D.
Answer: B
49)   

What is the primary technique used in case hardening? 

A.
B.
C.
D.
Answer: B
50)   

What property of rubber makes it suitable for making tires? 

A.
B.
C.
D.
Answer: A