sparksacademychennai@gmail.com +91 8190879379 Saidapet, Chennai

MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

540 Unit 2 Material Science and Heat Treatment

145)   

Which method is used to prevent timber decay?

A.
B.
C.
D.
146)   

Low-carbon steel is also known as: 

A.
B.
C.
D.
147)   

The purpose of annealing is to: 

A.
B.
C.
D.
148)   

Which non-ferrous metal is known for its excellent thermal conductivity?

A.
B.
C.
D.
149)   

Which phase is present in steel below the lower critical temperature (LCT)? 

A.
B.
C.
D.
150)   

Which material is the best insulator in high-voltage applications?

A.
B.
C.
D.
151)   

Which element is added to steel to improve its toughness?

A.
B.
C.
D.
152)   

What is the primary objective of the hardening process? 

A.
B.
C.
D.
153)   

Stainless steel contains at least what percentage of chromium?

A.
B.
C.
D.
154)   

The graphite in grey cast iron is present in which form?

A.
B.
C.
D.
155)   

Which type of timber is most durable for outdoor use? 

A.
B.
C.
D.
156)   

What is the main difference between annealing and normalizing?

A.
B.
C.
D.
157)   

Which type of rubber is petroleum-based? 

A.
B.
C.
D.
158)   

Which material is commonly used for insulating high-temperature equipment?

A.
B.
C.
D.
159)   

What structural change occurs at the lower critical temperature of steel? 

A.
B.
C.
D.
160)   

Which of the following is a common method for case hardening?

A.
B.
C.
D.