Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 23

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Question 1
4 / -1

A cubical box with porous walls containing an equal number of O₂ and H₂ molecules is placed in a large evacuated chamber. The entire system is maintained at constant temperature T. The ratio of v_rms of O₂ molecules to that of the v_rms of H₂ molecules, found in the chamber outside the box after a short interval is

A

B

C

D

Solution
Question 2
4 / -1

In thermal equilibrium, the average velocity of gas molecules is

A
Proportional to √T

B
Proportional to T²

C
Proportional to T³

D
Zero

Solution
Question 3
4 / -1

At what temperature is the root mean square velocity of gaseous hydrogen molecules equal to that of oxygen molecules at 47°C

A
20 K

B
80 K

C
– 73 K

D
3 K

Solution
Question 4
4 / -1

For a gas, the r.m.s speed at 800 K is

A
Four times the value of 200 K

B
Half the value at 200 K

C
Twice the value of 200 K

D
Same as at 200 K

Solution
Question 5
4 / -1

What is the velocity of wave in monoatomic gas having pressure 1 kilopascal and density 2.6 kg/m³?

A
3.6 m/s

B
8.9 × 10³ m/s

C
Zero

D
None of these

Solution
Question 6
4 / -1

At room temperature, the r.m.s. speed of the molecules of certain diatomic gas is found to be 1930 m/s. The gas is

A
H₂

B
F₂

C
O₂

D
Cl₂

Solution
Question 7
4 / -1

The r.m.s. speed of gas molecules is given by

A

B

C

D

Solution
Question 8
4 / -1

Which of the following statements is true?

A
Absolute zero degree temperature is not zero energy temperature

B
Two different gases at the same temperature pressure have equal root mean square velocities

C
The root mean square speed of the molecules of different ideal gases, maintained at the same temperature are the same

D
Given sample of 1 cc of hydrogen and 1 cc of oxygen both at NTP; oxygen sample has a large number of molecules
Question 9
4 / -1

According to the kinetic theory of gases, at absolute temperature

A
Water freezes

B
Liquid helium freezes

C
Molecular motion stops

D
Liquid hydrogen freezes

Solution
Question 10
4 / -1

Molecular motion shows itself as

A
Temperature

B
Internal energy

C
Friction

D
Viscosity