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Home
Kinetic Theory of Gases Test - 31
Kinetic Theory of Gases Test - 31
Result
Kinetic Theory of Gases Test - 31
/
Score
-
Rank
Time Taken:
-
Question
1/10
4 / -1
The time average of the kinetic energy of one molecule of a gas taken over a long period of time
Correct
Wrong
Skipped
A
Is proportional to the square root of the absolute temperature of the gas
Correct
Wrong
Skipped
B
Is proportional to the absolute temperature of the gas
Correct
Wrong
Skipped
C
Is proportional to the square of the absolute temperature of the gas
Correct
Wrong
Skipped
D
Does not depend upon the absolute temperature of the gas
Solutions
Question
2/10
4 / -1
The kinetic energy per g mol for a diatomic gas at room temperature is
Correct
Wrong
Skipped
A
3 RT
Correct
Wrong
Skipped
B
Correct
Wrong
Skipped
C
Correct
Wrong
Skipped
D
Solutions
Question
3/10
4 / -1
A diatomic gas is heated at constant pressure. What fraction of the heat energy is used to increase the internal energy?
Correct
Wrong
Skipped
A
3/5
Correct
Wrong
Skipped
B
3/7
Correct
Wrong
Skipped
C
5/7
Correct
Wrong
Skipped
D
5/9
Solutions
Question
4/10
4 / -1
The kinetic energy of translation of 20 g of oxygen at 47°C is (molecular wt. of oxygen is 32 g/mol and R = 8.3 J/mol/K)
Correct
Wrong
Skipped
A
2490 J
Correct
Wrong
Skipped
B
2490 ergs
Correct
Wrong
Skipped
C
830 J
Correct
Wrong
Skipped
D
124.5 J
Solutions
Question
5/10
4 / -1
The average kinetic energy of a gas molecule is
Correct
Wrong
Skipped
A
Proportional to pressure of gas
Correct
Wrong
Skipped
B
Inversely proportional to volume of gas
Correct
Wrong
Skipped
C
Inversely proportional to absolute temperature of gas
Correct
Wrong
Skipped
D
Proportional to absolute temperature of gas
Solutions
Question
6/10
4 / -1
The average kinetic energy of a gas molecule at 27°C is 6.21 × 10
–21
J. Its average kinetic energy at 227°C will be
Correct
Wrong
Skipped
A
52.2 × 10
–21
J
Correct
Wrong
Skipped
B
5.22 × 10
–21
J
Correct
Wrong
Skipped
C
10.35 × 10
–21
J
Correct
Wrong
Skipped
D
11.35 × 10
–21
J
Solutions
Question
7/10
4 / -1
The average translational kinetic energy of O
2
(molar mass 32) molecules at a particular temperature is 0.048 eV. The translational kinetic energy of N
2
(molar mass 28) molecules in eV at the same temperature is
Correct
Wrong
Skipped
A
0.0015
Correct
Wrong
Skipped
B
0.003
Correct
Wrong
Skipped
C
0.048
Correct
Wrong
Skipped
D
0.768
Solutions
Question
8/10
4 / -1
The average translational energy and the r.m.s. speed of molecules in a sample of oxygen gas at 300 K are 6.21 × 10
–21
J and 484 m/s respectively. The corresponding values at 600 K are nearly (assuming ideal gas behaviour)
Correct
Wrong
Skipped
A
12.42 × 10
21
J, 968 m/s
Correct
Wrong
Skipped
B
8.78 × 10
21
J, 684 m/s
Correct
Wrong
Skipped
C
6.21 × 10
21
J, 968 m/s
Correct
Wrong
Skipped
D
12.42 × 10
21
J, 684 m/s
Solutions
Question
9/10
4 / -1
A polyatomic gas with n degrees of freedom has a mean energy per molecule give by
(N is Avogadro\'s number)
Correct
Wrong
Skipped
A
Correct
Wrong
Skipped
B
Correct
Wrong
Skipped
C
Correct
Wrong
Skipped
D
Solutions
Question
10/10
4 / -1
At 0 K which of the following properties of a gas will be zero?
Correct
Wrong
Skipped
A
Kinetic energy
Correct
Wrong
Skipped
B
Potential energy
Correct
Wrong
Skipped
C
Vibrational energy
Correct
Wrong
Skipped
D
Density
Solutions
Re-attempt
-
Correct (
-
)
Wrong (
-
)
Skipped (
-
)
1
2
3
4
5
6
7
8
9
10
Re-attempt
-
Correct (
-
)
Wrong (
-
)
Skipped (
-
)
1
2
3
4
5
6
7
8
9
10
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