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UBCHS - KS5 Physics - Ideal Gas Laws Flashcards | StudBud
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UBCHS - KS5 Physics - Ideal Gas Laws
UBCHS - KS5 Physics - Ideal Gas Laws
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Questions
14
Answers
1
Specimen
P
&
Q
of the same gas exert the same pressure.
P
is at temp of 280K & has 10
20
molecules/unit vol.
A
D
B
C
2
Which of the following is
not
used as valid assumption when using the simple kinetic theory of gases?
A
B
C
D
3
The dashed line
X
shows the variation of pressure,
p
, temp,
T
, for 1 mol of ideal gas in a container of fixed volume.
C
D
A
B
4
What is the total internal energy of 2.4 mol of an ideal gas which has a temperature of 15 °C?
A
B
D
C
5
Which graphs shows the link between internal energy of an ideal gas (
y
-axis) & absolute temp of the gas (
x
-axis)?
B
D
A
C
6
At a temp RMS speed of molecules of volume of gas is
c
. The temp of gas changes so pressure halves.
C
A
D
B
7
The composition of a carbon dioxide (CO
2
) molecule is one atom of C-12 and two atoms of O-16.
A
B
C
D
8
The temp of a room increases from 283K to 293K The r.m.s. speed of air molecules in the room increases by a factor of
2.00
1.41
1.04
1.02
9
The graph shows the variation of pressure
p
with temperature
θ
for a fixed mass of an ideal gas at constant volume.
2.93
5.00
0.341
0.395
10
A transparent box contains small smoke particles & air. Smoke particles move randomly viewed through a microscope.
A
C
B
D
11
A fixed mass of ideal gas has a vol
V
& absolute temp
T
. Its pressure could be doubled by changing vol & temp to
D
C
A
B
12
Which one of the following is
not
an assumption about the properties of particles in the simple kinetic theory?
A
C
B
D
13
A mass of gas occupies vol
V
. The temp of gas increases so the rms velocity of gas molecules doubles.
B
A
C
D
14
The average mass of an air molecule is 4.8 × 10
–26
kg What is the mean square speed of an air molecule at 750 K?
D
A
C
B
