# Chapter 6: Thermal Properties of Matter Physics Mcqs for High School - Grade 9 - Set 4

1)   On Celsius scale, the upper fixed point is marked as

a. 32 °C
b. 212 °C
c. 100 °C
d. 0 °C
 Answer  Explanation ANSWER: 100 °C Explanation: No explanation is available for this question!

2)   To change the state of matter thermal energy is

b. removed only
c. constant

3)   A thermometer should be

a. visible
b. have high boiling point
c. small specific heat
d. all of above
 Answer  Explanation ANSWER: all of above Explanation: No explanation is available for this question!

4)   The temperature on kelvin scale of temperature when it is 15 °C on Celsius scale should be

a. 273 K
b. 288 K
c. 180 K
d. 258 K
 Answer  Explanation ANSWER: 288 K Explanation: No explanation is available for this question!

5)   The temperature at which a solid starts melting is called its

a. constant point
b. boiling point
c. freezing point
d. melting point
 Answer  Explanation ANSWER: melting point Explanation: No explanation is available for this question!

6)   The scale on a thermometer has

a. 3 fixed points
b. 4 fixed points
c. 1 fixed point
d. 2 fixed points
 Answer  Explanation ANSWER: 2 fixed points Explanation: No explanation is available for this question!

7)   Water from 4 °C to 0 °C

a. contracts
b. starts to turn in to ice
c. expands
d. none of above
 Answer  Explanation ANSWER: expands Explanation: No explanation is available for this question!

8)   Evaporation causes

a. cooling
b. heating effect
c. increase in weight
d. increase in density
 Answer  Explanation ANSWER: cooling Explanation: No explanation is available for this question!

9)   Normal human body's temperature is 98.6 °F. In kelvin scale, it is

a. 320 K
b. 300 K
c. 308 K
d. 310 K
 Answer  Explanation ANSWER: 310 K Explanation: No explanation is available for this question!

10)   A device that is used to measure the temperature of a body is called

a. thermometer
b. barometer
c. nanometer
d. beam balance
 Answer  Explanation ANSWER: thermometer Explanation: No explanation is available for this question!

11)   Heat is also called

a. temperature
b. absence of heat
c. energy in transit
d. all of above
 Answer  Explanation ANSWER: energy in transit Explanation: No explanation is available for this question!

12)   Degree of hotness and coldness of a body is called

a. heat
b. temperature
c. density
d. coldness
 Answer  Explanation ANSWER: temperature Explanation: No explanation is available for this question!

13)   A thermometric liquid's boiling point should be

a. low
b. high
c. same
d. constant
 Answer  Explanation ANSWER: high Explanation: No explanation is available for this question!

14)   Kinetic energy of an atom or molecule is due to its motion which depends upon the

a. size
b. temperature
c. location
d. surface area
 Answer  Explanation ANSWER: temperature Explanation: No explanation is available for this question!

15)   When the liquid is heated there is change in volume of

a. liquid only
b. container only
c. air
d. liquid and container
 Answer  Explanation ANSWER: liquid and container Explanation: No explanation is available for this question!

16)   On Celsius scale, the interval between the lower and upper fixed points is divided into

a. 100 equal parts
b. 180 equal parts
c. 50 equal parts
d. 90 equal parts
 Answer  Explanation ANSWER: 100 equal parts Explanation: No explanation is available for this question!

17)   Bridges with rollers below one of their ends allow movements due to

a. expansion only
b. contraction only
c. suspension
d. expansion and contraction
 Answer  Explanation ANSWER: expansion and contraction Explanation: No explanation is available for this question!

18)   The coefficient of linear thermal expansion of a substance is denoted by

a. α
b. β
c. π
d. ω
 Answer  Explanation ANSWER: α Explanation: No explanation is available for this question!

19)   Wires on electric poles are given some sag on order to prevent

a. expansion in winters
b. contraction in winters
c. touching with each other
d. from coming in way of air planes
 Answer  Explanation ANSWER: contraction in winters Explanation: No explanation is available for this question!

20)   If we convert 110 °F into Celsius scale of temperature, we get

a. 43.3 °C
b. 0 °C
c. 150 °C
d. 60.5 °C
 Answer  Explanation ANSWER: 43.3 °C Explanation: No explanation is available for this question!