AL-MC-Heat / p.1
1.
(88-I-16)
3.
(90-I-14)
The energy which must be supplied to 1 mole of
A fixed mass of an ideal gas is enclosed in a
gas initially at absolute temperature T, pressure p
cylinder by a piston. When the piston is pushed
and volume V, to raise its temperature by 1 K, is
quickly into the cylinder, which of the following
physical properties of the gas will increase?
Q1 at constant pressure and Q2 at constant
volume. The value of
Q2 is
(1)
pressure
(2)
temperature
(3)
internal energy
A.
Q1 .
B.
Q1  pVT.
A.
(1), (2) and (3)
B.
(1) and (2) only
C.
Q1  pVT .
C.
(2) and (3) only
D.
(1) only
D.
Q1 
pV
.
T
pV
Q1 
.
T
E.
(3) only
E.
4.
(93-I-19)
The calibration curve of a resistance thermometer
against a constant volume gas thermometer is
2.
(89-I-19)
given below :
1 mole of an ideal mono-atomic gas expands at a
constant pressure of 10
5
Pa from a volume of
3
0.02m to a volume of 0.03m 3 . The increase
in internal energy of the gas is
A.
500 J
B.
667 J
C.
1000 J
D.
1500 J
When the resistance thermometer is left in a room,
E.
2500 J
its resistance is found to be 1.28  . Find the
values of the room temperature on both the
resistance thermometer scale and the gas
thermometer scale.
Room temperature on the Room temperature on
resistance thermometer
scale
A.
B.
/
o
C
36
cannot be determined
C.
20
D.
20
E.
36
the gas thermometer
scale
/
o
C
36
36
36
cannot be determined
20
AL-MC-Heat / p.2
5.
(94-IIA-13)
7.
(01-IIA-33)
One mole of an ideal gas is contained in a cylinder
The first law of thermodynamics can be expressed
fitted with a light, frictionless piston. The gas is
as U  Q  W . When an ideal gas is
heated under constant pressure P so that its volume
compressed while keeping its pressure constant,
increases from V to 4V and the final temperature is
which of the following holds?
T. If R is the universal gas constant, the work done
by the gas is
6.
A.
positive
negative
negative
B.
RT/3
B.
positive
positive
positive
C.
RT
C.
zero
negative
negative
D.
3RT
D.
negative
negative
negative
E.
4RT
E.
negative
negative
positive
flow away from a body X?
X is changed from its liquid state to a solid at
freezing point.
X is in thermal contact with another system
at a lower temperature.
(3)
W
3RT/4
In which of the following cases will heat always
(2)
U
A.
(98-IIA-34)
(1)
Q
X is in thermal contact with another system
which has a smaller amount of internal
energy.
A.
(1) only
B.
(3) only
C.
(1) and (2) only
D.
(2) and (3) only
E.
(1), (2) and (3)
AL-MC-Heat / p.3
8.
(03-IIA-38)
A fixed mass of an ideal gas undergoes
changes from state X to state Z via state Y as
shown in the plot of pressure p against volume
V below.
Which graph best shows how the absolute
temperature T of the gas varies with its
volume V?
A.
B.
C.
D.