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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

540 UNIT 4 Heat and Temperature

33)   

The boiling point of water decreases when: 

A.
B.
C.
D.
34)   

 The boiling point of mercury is about:

A.
B.
C.
D.
35)   

Which of the following materials melts at room temperature?

A.
B.
C.
D.
36)   

Which type of thermometer uses expansion of liquid in a capillary tube? 

A.
B.
C.
D.
37)   

 Which instrument uses thermal radiation to measure temperature? 

A.
B.
C.
D.
38)   

 A thermocouple is based on:

A.
B.
C.
D.
39)   

Which of the following instruments is best for measuring very high temperatures in a furnace? 

A.
B.
C.
D.
40)   

A calorimeter is used to measure:

A.
B.
C.
D.
41)   

Vacuum flask reduces heat loss by: 

A.
B.
C.
D.
42)   

 Good conductors of heat also tend to be good: 

A.
B.
C.
D.
43)   

 Which material is used for making cooking utensils due to good thermal conductivity? 

A.
B.
C.
D.
44)   

 Dark and dull surfaces are better at:

A.
B.
C.
D.
45)   

 The main reason why metals feel colder than wood at the same temperature is: 

A.
B.
C.
D.
46)   

When temperature increases, the length of a metal rod: 

A.
B.
C.
D.
47)   

Which factor does NOT affect the amount of heat gained or lost by a body? 

A.
B.
C.
D.
48)   

Which of the following expands least for the same temperature rise? 

A.
B.
C.
D.