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

101)   

What is the primary purpose of annealing in metals? 

A.
B.
C.
D.
Answer: A
102)   

What is the typical range of carbon content in cast iron? 

A.
B.
C.
D.
Answer: C
103)   

Vulcanization increases which property of rubber? 

A.
B.
C.
D.
Answer: B
104)   

Which of the following is considered an alloy steel?

A.
B.
C.
D.
Answer: C
105)   

Which of the following is a thermal insulating material?

A.
B.
C.
D.
Answer: B
106)   

What is the key effect of normalizing steel? 

A.
B.
C.
D.
Answer: C
107)   

What is the key property of low-carbon steel?

A.
B.
C.
D.
Answer: A
108)   

Which heat treatment process improves toughness the most?

A.
B.
C.
D.
Answer: B
109)   

What is the most important property of timber used for furniture?

A.
B.
C.
D.
Answer: B
110)   

Which medium produces the slowest cooling during quenching?

A.
B.
C.
D.
Answer: B
111)   

Which element is primarily responsible for the hardness of steel? 

A.
B.
C.
D.
Answer: A
112)   

What is the main purpose of hardening steel? 

A.
B.
C.
D.
Answer: A
113)   

Which property of cast iron makes it suitable for engine blocks?

A.
B.
C.
D.
Answer: B
114)   

What happens to steel when heated above the upper critical temperature? 

A.
B.
C.
D.
Answer: A
115)   

Which non-ferrous metal is widely used in electrical wiring?

A.
B.
C.
D.
Answer: A
116)   

Which property makes timber durable for outdoor use?

A.
B.
C.
D.
Answer: B
117)   

During tempering, which structural transformation occurs in steel?

A.
B.
C.
D.
Answer: A
118)   

What makes rubber highly elastic? 

A.
B.
C.
D.
Answer: A
119)   

What is a key difference between steel and cast iron?

A.
B.
C.
D.
Answer: A
120)   

Which insulating material has the lowest thermal conductivity? 

A.
B.
C.
D.
Answer: B
121)   

Which process is used to harden only the surface of steel?

A.
B.
C.
D.
Answer: C
122)   

What makes stainless steel resistant to corrosion?

A.
B.
C.
D.
Answer: B
123)   

Which type of rubber is used in making vehicle tires? 

A.
B.
C.
D.
Answer: C
124)   

Which heat treatment process helps refine the grain structure of steel? 

A.
B.
C.
D.
Answer: A
125)   

Why is teak commonly used in construction? 

A.
B.
C.
D.
Answer: B