CHAPTER 11 HEAT AND THERMODYNAMIC
PHYSICS CHAPTER 11
HEAT AND THERMODYNAMIC
1. The degree of hotness or coldness
of an object is expressed in terms of:
a) Heat
capacity
b) Heat
c) Temperature
d) Heat energy
2. Which of the following properties
of matter is used in the construction of a thermometer:
a) Expansion
of matter on heating
b) Change of color with temperature
c) Increase of
resistance with rise of temperature d) All of these
3. Mercury is used in mercury-in-glass
thermometer as a thermometric substance because:
a) It does
not wet the capillary tube walls
b) It is opaque
c) Its
expansion is uniform over a wide range of temperature
d) All of above
4.Two fixed points used for the
temperature scales are:
a) The
temperature of freezing and boiling mercury
b) The
temperature of melting ice and boiling water
c) The
temperature of water at 0oC and 100oC d) None of these
5. In liquid-in-glass thermometer, the
thermometric property used is:
a) Thermal
expansion
b) Color change on heating
c) Resistance
change on heating d) None of these
6.The lower and upper fixed points on
Celsius (centigrade) scale are taken to be:
a) 0o
and 212o
b) 32o and 273o
c) 0o
and 100o d) None of these
7. A Celsius (centigrade) degree is
greater than a Fahrenheit degree by:
a) 5/9
b) 9/5
c) 18/5 d) 9/10
8.The Centigrade and Fahrenheit
scales have the same reading at:
a) 40o
b) 140o
c) -140o d) -40o
9.The relationship between Celsius
and Fahrenheit scales temperature is:
a) Fo
= 9/5 Co - 32
b) Fo = 9/5 Co + 32
c) Co
= 9/5 Fo + 32 d) None of these
10.The temperature of a normal human body
is 98.6 Fo. This temperature corresponds to:
a) 20 Co
b) 30 Co
c) 37 Co d) 66.6 Co
11.The temperature of normal human body
is 37 Co. On Kelvin scale, it is equal to:
a) 373 Ko
b) 273 Ko
c) 310 Ko d) 236 Ko
12.One degree of centigrade scale is
equal to:
a) 1o
of Fahrenheit
b) 1.8o of Fahrenheit
c) 32o
of Fahrenheit d) 3o of Fahrenheit
13. 10 Co corresponds to:
a) 273o K
b) 283o K
c) 263o K d) 100o K
14.The temperature of absolute zero
corresponds to:
a) -273 Co
b) 273 Co
c) 0 Co d) 20 Co
15.What temperature on Fahrenheit scale
corresponds to absolute zero?
a) 212o F
b) 32o F
c) -32o F d) -460o F
16.One Calorie is equal to:
a) 41.8 J
b) 4.18 J
c) 18.4 J d) 4.35 J
17.SI unit of heat energy is:
a) Calorie
b) B.T.U.
c) Joule d) Kilo-Calorie
18.Absolute zero is considered to be the
temperature at which:
a) All gases
become liquids
b) All liquids become gases
c) Water freezes d) Molecular motion in gases would cease
19.The Kelvin and Fahrenheit scales show
the same reading at:
a) 57.42o
b) 5.74o
c) 574.25o d) -574.25o
20.Which of the following does not have
the same units:
a) Mechanical
energy
b) Kinetic energy
c) Heat energy d) Power
21.Melting point of ice and boiling point
of water in Fahrenheit scale are taken as:
a) 0o
and 100o
b) 32o and 272o
c) 100o
and 373o d) 32o and 212o
22.Which of the following represents the
total energy of the molecules of the substance:
a) Translational
K.E. and rotational K.E.
b) Rotational K.E. and Vibrational K.E.
c) Vibrational
K.E., Translational K.E. and Potential energy
d) Translational K.E, Vibrational K.E,
rotational K.E. and Potential energy
23.The average K.E of all the molecules
in a substance is a measure of:
a) Heat
energy
b) Temperature
c) Boiling point d) Specific heat
24.The total sum of all the energies of
the molecules in a substance is called:
a) Heat
energy
b) Kinetic energy
c) Temperature d) Potential energy
25.At constant pressure, the graph
between volume (V) and temperature (T) is:
a) A curve
b) A parabola
c) A hyperbola
d) A straight line
26. Real gases strictly obey gas laws at:
a) Low
pressure & low temperature
b) High pressure & low temperature
c) Low pressure
& high temperature
d) High pressure & high temperature
27. “Volume of a gas is directly
proportional to its temperature (absolute) while keeping pressure constant”, this is called:
a) Boyl’s law
b) Charle’s law
c) Ideal gas
law
d) None of these
28.“Volume of a gas is inversely proportional
to its pressure while keeping temperature constant”, this is called:
a) Boyl’s law
b) Charle’s law
c) Ideal gas law
d) None of these
29.For a gas obeying Boyl’s law if the
pressure is doubled, the volume becomes:
a) Three fold
b) Double
c) One-half
d) Remains the same
30.The K.E. of the molecules of an ideal
gas at absolute zero will be:
a) Zero
b) Infinite
c) Very high
d) Below zero
31.At absolute zero of temperature, the
molecules have:
a) Rotational
K.E
b) Translational K.E
c) Maximum energy
d) Zero energy
32.In an ideal gas, the molecules have:
a) Kinetic
energy only
b) Potential energy only
c) Both Kinetic
and Potential energies
d) None of these
33.The molecules of the gas exert
pressure on the walls of the container due to:
a) Their
velocity
b) Their continuous collision
c) Their free
motion
d) Their energy
34.The relation between Boltzman constant
K, gas constant R and Avogadro’s number NA is:
a) K = NA/R
b) K= RNA
c) K = R/NA
d) K = R - NA
35.The pressure exerted by the gas
molecules is:
a) Inversely
proportional to average translational K.E. of molecules
b) Directly proportional to average
translational K.E. of molecules
c) Inversely
proportional to number of molecules per unit volume of the gas
d) None of the above
36.The absolute temperature of an ideal
gas is:
a) Directly
proportional to average translational K.E. of the molecules
b) Inversely proportional to average
translational K.E. of the molecules
c) Directly
proportional to the universal gas constant
d) None of the above
37. Heat is form of energy associated
with:
a) Molecular
mass
b) Molecular motion
c) Molecular
weight
d) None of these
38.When the pressure is increased, the
boiling point of liquid:
a) Increases
b) Decreases
c) Remains
unchanged
d) All of these
39.The pressure is measured in units of:
a) Pascal
b) Atmosphere
c) N/m2
d) All of these
40.The change in length per unit length
per Kelvin rise temperature is called:
a) Coefficient
of superficial expansion
b) Coefficient of volume expansion
c) Coefficient of
linear expansion
d) None of these
ANSWER KEY
|
1
|
11
|
21
|
31
|
||||
2
|
12
|
22
|
32
|
||||
3
|
13
|
23
|
33
|
||||
4
|
14
|
24
|
34
|
||||
5
|
15
|
25
|
35
|
||||
6
|
16
|
26
|
36
|
||||
7
|
17
|
27
|
37
|
||||
8
|
18
|
28
|
38
|
||||
9
|
19
|
29
|
39
|
||||
10
|
20
|
30
|
40
|