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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

540 Unit 2 Material Science and Heat Treatment

65)   

Why is case hardening preferred for gears?

A.
B.
C.
D.
66)   

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

A.
B.
C.
D.
67)   

What gives white cast iron its high hardness? 

A.
B.
C.
D.
68)   

What does UCT stand for in heat treatment? 

A.
B.
C.
D.
69)   

Which non-ferrous alloy is used in aircraft manufacturing? 

A.
B.
C.
D.
70)   

At what temperature is annealing typically performed for steel?

A.
B.
C.
D.
71)   

What is the primary use of tool steel?

A.
B.
C.
D.
72)   

What is the main advantage of heat treatment in metals?

A.
B.
C.
D.
73)   

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

A.
B.
C.
D.
74)   

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

A.
B.
C.
D.
75)   

What is the carbon content in high-carbon steel? 

A.
B.
C.
D.
76)   

What is the commonly used medium for quenching in heat treatment? 

A.
B.
C.
D.
77)   

Which of the following is a ferrous metal? 

A.
B.
C.
D.
78)   

What is the main objective of tempering steel?

A.
B.
C.
D.
79)   

Which material property describes its ability to be hammered into thin sheets? 

A.
B.
C.
D.
80)   

Which insulating material is commonly used in high-temperature furnaces?

A.
B.
C.
D.