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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

540 Unit 2 Material Science and Heat Treatment

33)   

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

A.
B.
C.
D.
34)   

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

A.
B.
C.
D.
35)   

Why is grey cast iron widely used in engine blocks?

A.
B.
C.
D.
36)   

What is added to rubber during vulcanization?

A.
B.
C.
D.
37)   

What is the difference between normalizing and annealing?

A.
B.
C.
D.
38)   

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

A.
B.
C.
D.
39)   

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

A.
B.
C.
D.
40)   

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

A.
B.
C.
D.
41)   

What is the typical carbon content range in mild steel?

A.
B.
C.
D.
42)   

Which material is commonly used as an electrical insulator? 

A.
B.
C.
D.
43)   

At what temperature range is tempering usually performed? 

A.
B.
C.
D.
44)   

Why is white cast iron brittle? 

A.
B.
C.
D.
45)   

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

A.
B.
C.
D.
46)   

What happens during the annealing process?

A.
B.
C.
D.
47)   

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

A.
B.
C.
D.
48)   

Which property of steel is enhanced by the hardening process? 

A.
B.
C.
D.