Sparks Academy
SPARKS ACADEMY
Online Test Series
8190879379 Chennai

Mechanical - 540 UNIT 4 Heat and Temperature - MCQ

176)   

Which of the following processes involves the absorption of heat?

A.
B.
C.
D.
Answer: C
177)   

At absolute zero temperature, the kinetic energy of molecules is:

A.
B.
C.
D.
Answer: C
178)   

Which of the following units can be used to measure heat energy? 

A.
B.
C.
D.
Answer: B
179)   

 The boiling point of water increases when:

A.
B.
C.
D.
Answer: B
180)   

Heat content of a body depends on: 

A.
B.
C.
D.
Answer: C
181)   

A clinical thermometer usually measures temperature between: 

A.
B.
C.
D.
Answer: C
182)   

 Thermistors are mostly used in: 

A.
B.
C.
D.
Answer: B
183)   

Which device gives the most accurate temperature reading for industrial use? 

A.
B.
C.
D.
Answer: D
184)   

Which thermometer is used in meteorology? 

A.
B.
C.
D.
Answer: B
185)   

 Bimetallic strips are made of two metals with:

A.
B.
C.
D.
Answer: D
186)   

 The gap between double-walled glass in a thermos flask prevents heat loss by:

A.
B.
C.
D.
Answer: D
187)   

Cooking pans have wooden handles because wood is a: 

A.
B.
C.
D.
Answer: B
188)   

 Heat transfer in liquids and gases mainly takes place by:

A.
B.
C.
D.
Answer: C
189)   

 The shiny outer surface of a thermos flask prevents heat loss by:

A.
B.
C.
D.
Answer: B
190)   

 Which type of heat transfer requires no material medium?

A.
B.
C.
D.
Answer: C
191)   

Which of the following expands the most with the same heat input?

A.
B.
C.
D.
Answer: D
192)   

 Steel bridges have expansion joints to allow for:

A.
B.
C.
D.
Answer: C
193)   

 If the temperature of a gas increases at constant volume, pressure will:

A.
B.
C.
D.
Answer: A
194)   

Gauge pressure is negative when: 

A.
B.
C.
D.
Answer: A
195)   

Which instrument is used to measure high pressure in hydraulic systems? 

A.
B.
C.
D.
Answer: B
196)   

 In pressure cookers, food cooks faster because: 

A.
B.
C.
D.
Answer: B
197)   

 Which material has the lowest thermal conductivity? 

A.
B.
C.
D.
Answer: A
198)   

 The direction of heat flow is always from: 

A.
B.
C.
D.
Answer: C
199)   

What happens to water at 4°C when it is slightly cooled? 

A.
B.
C.
D.
Answer: A
200)   

 Thermal equilibrium means: 

A.
B.
C.
D.
Answer: C