9th Class Physics Chapter No.8 Past Paper MCQs
HAMZA SCIENCE ACADEMY
Physics MCQs Test Class 9th
Chapter # 8
THERMAL PROPERTIES OF MATTER
1. Water freezer at:
(A)
0
(B)
32
(C)
-273K
(D) 0 K
2. Normal human body temperature is:
(A)
15
(B) 37
(C) 38
(D) 98.6
3.
Which
of the following material has large specific heat?
(A)
Copper
(B)
ice
(C)
water
(D)
mercury
4.
Which
of the following effects evaporation?
(A)
Temperature
(B)
Surface area of the liquid
(C)
Air
(D) All of these
5.
Complete
the equation T(K) = ___________.
(A)
273 + C
(B)
273 - C
(C)
273 + F
(D) 273 - F
6.
Absolute
zero is equal to:
(A)
0
(B)
100 K
(C)
100
(D) – 273
7.
On
Celsius scale, 50
is equal on
Fahrenheit scale to:
(A)
100
(B)
102
(C)
122
(D)
90
8. Unit of specific heat capacity in SI system is:
(A)
Jkg-1K-1
(B)
J-1kg-1K-1
(C)
JkgK
(D) JkgK-1
9. Specific heat of iron in joules per kilogram per kelvin is:
(A)
387.0
(B)
920.0
(C)
470.0
(D) 903.0
10.
The
specific heat of water is:
(A)
800
Jkg-1K-1
(B)
4200 Jkg-1K-1
(C)
2500 Jkg-1K-1
(D) 1760 Jkg-1K-1
11. Latent heat of fusion of 1 Kg of ace at 0
is:
(A)
33.6
105 Jkg-1
(B)
3.36
105 Jkg-1
(C)
3.36
103 Jkg-1
(D) 336
105 Jkg-1
12.
Which
gas is used in spite of freon gas in refrigerator?
(A)
CO2
(B)
H2
(C)
NH3
(D) N2
13.
Mercury
is used as thermometric material because it has:
(A)
Uniform thermal expansion
(B)
Low freezing point
(C)
Small heat capacity
(D) All the given properties
14. Temperature of ice in freezer is:
(A)
0
(B)
-8
(C)
-18
(D) -28
15.
Metals
are good conductor of heat due to the:
(A)
Free
electrons
(B)
Big size of their molecules
(C)
Small size of their molecules
(D) Rapid vibration of their molecules
16.
The
unit of rate of conduction of thermal energy is
(A)
Js-1
(B)
J
(C)
K
(D) JK-1
17. ______ of crocus is natural thermometer:
(A)
Flower
(B)
Seed
(C)
Stem
(D)
Root
18.
The
unit of specific heat is:
(A)
JkgK-1
(B)
Jkg-2K-1
(C)
Jk1gK-1
(D)
Jkg-2K-2
19. In ________state of matter, molecules
do not leave their position.
(A)
Solid
(B)
liquid
(C)
gas
(D) plasma
20. The water is converts into ice
at a temperature:
(A)
0
(B)
32
(C)
-273 K
(D) 0 K
21. Boiling point of water is:
(A)
0
(B)
100
(C)
273
(D) 100 K
22. Mercury freeze at:
(A)
0
(B)
-357
(C)
-39
(D) -100
23.
______ is the natural
thermometer.
(A) Crocus flower
(B) Rose flower
(C) Sun flower
(D) Lily flower
24.
Which of the following material
has large value of coefficient of linear thermal expansion?
(A) Aluminum
(B) gold
(C) brass
(D) steel
25.
Coefficient of linear expansion
and volume expansion are related:
(A) β=α
(B) β=2α
(C) β=3α
(D) β=4α
26.
Boiling point of gold is equal
to:
(A)
2595
(B)
2450
(C)
2660
(D) 1750
27. What will be value of β for
a solid for which α has value of
(A)
(B)
(C)
(D)
28.
The formula of conversion from
Celsius to kelvin scale is:
(A) T(K)=273+
(B) T(K)=373-
(C) T(K)=273-
(D) T(K)=373+
29.
The specific heat of ice is :
(A) 2100
(B) 2200
(C) 2300
(D) 2400
30.
The value of coefficient of
linear thermal expansion of brass is:
(A)
(B)
(C)
(D)
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