1. | \(T_{H_{2}}=T_{H e}\) | 2. | \(\dfrac{T_{H_2}}{2}=\dfrac{T_{He}}{4}\) |
3. | \(5 T_{H_2}=3 T_{He}\) | 4. | \(\dfrac{T_{H_{2}}}{5}=\dfrac{T_{{He }}}{3}\) |
Assertion (A): | As a gas bubble rises from the bottom of a lake, its volume decreases. |
Reason (R): | As the gas bubble rises from the bottom of a lake, the pressure of the gas within decreases. |
1. | (A) is True but (R) is False. |
2. | (A) is False but (R) is True. |
3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
The temperature at which the rms speed of atoms in neon gas is equal to the rms speed of hydrogen molecules at \(15^{\circ} \mathrm{C}\) is: (Atomic mass of neon \(=20.2\) u, molecular mass of hydrogen \(=2\) u)
1. | \(2.9\times10^{3}\) K | 2. | \(2.9\) K |
3. | \(0.15\times10^{3}\) K | 4. | \(0.29\times10^{3}\) K |
Assertion (A): | The mean free path of gas molecules varies inversely with the density of the gas. |
Reason (R): | The mean free path varies inversely with the pressure of the gas. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |
Sorry!! currently, the explanation for the question is not provided. If you need further help, please email at support@neetprep.com with subject: Explanation Missing for Question Id: 340052
Assertion (A): | The average velocity of the molecules of an ideal gas increases when the temperature rises. |
Reason (R): | The internal energy of an ideal gas increases with temperature, and this internal energy is the random kinetic energy of molecular motion. |
1. | (A) is True but (R) is False. |
2. | (A) is False but (R) is True. |
3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
1. | \(2 P\) | 2. | \(P\) |
3. | \(\dfrac{P}{2}\) | 4. | \(4 P\) |
The pressure exerted by a gas enclosed within a room is due to:
1. | collisions of the gas molecules with the walls of the room. |
2. | repulsive force between molecules of the gas. |
3. | weight of the molecules of the gas. |
4. | angular momentum of the molecules. |
Hydrogen gas is contained in a vessel and the RMS speed of the gas molecules is \(v\). The gas is heated isobarically so that its volume doubles, then it is compressed isothermally so that it returns to the same volume. The final RMS speed of the molecules will be:
1. | \(v\) | 22. | \(v\)/2 |
3. | \(v\)\(\sqrt2\) | 4. | \(v\)/\(\sqrt2\) |