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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

540 Unit 2 Material Science and Heat Treatment

1)   
Which of the following is a non-ferrous metal?
A.
B.
C.
D.
Answer: C
2)   

What is the primary property of insulating materials? 

A.
B.
C.
D.
Answer: C
3)   

What is the main difference between iron and steel?

A.
B.
C.
D.
Answer: A
4)   

What is the purpose of annealing?

A.
B.
C.
D.
Answer: B
5)   

Cast iron contains approximately how much carbon?

A.
B.
C.
D.
Answer: C
6)   

In which process is steel cooled in air to refine its grain structure? 

A.
B.
C.
D.
Answer: B
7)   

Which property of rubber makes it useful for seals and gaskets?

A.
B.
C.
D.
Answer: A
8)   

What forms in steel above the upper critical temperature? 

A.
B.
C.
D.
Answer: C
9)   

Stainless steel is an example of: 

A.
B.
C.
D.
Answer: C
10)   

Timber is primarily used for: 

A.
B.
C.
D.
Answer: B
11)   

Which type of carbon steel has the highest hardness? 

A.
B.
C.
D.
Answer: C
12)   

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

A.
B.
C.
D.
Answer: B
13)   

What is the primary purpose of tempering? 

A.
B.
C.
D.
Answer: A
14)   

Which of the following is an example of an insulating material?

A.
B.
C.
D.
Answer: C
15)   

Which heat treatment process is used to harden only the surface of the material? 

A.
B.
C.
D.
Answer: C
16)   

Why is cast iron preferred in machine bases? 

A.
B.
C.
D.
Answer: C