- 1(current)
Q. No.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. |
Subtopic: Â Kinetic Energy of an Ideal Gas |
 90%
From NCERT
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In a vessel, the gas is at a pressure \(P\). If the mass of all the molecules is halved and their speed is doubled, then the resultant pressure will be:
1. \(2 P\)
2. \(P\)
3. \(\frac{P}{2}\)
4. \(4 P\)
1. \(2 P\)
2. \(P\)
3. \(\frac{P}{2}\)
4. \(4 P\)
Subtopic: Â Kinetic Energy of an Ideal Gas |
 64%
From NCERT
NEET - 2013
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Suppose that the average kinetic energy (translational & rotational) of random molecular motion of helium (\(He\)) at temperature \(T_{He}\) is equal to that of hydrogen (\(H_2\)) at temperature \(T_{H_2}\). Then,
1. \(T_{H_{2}}=T_{H e}\)
2. \(\frac{T_{H_2}}{2}=\frac{T_{He}}{4}\)
3. \(5 T_{H_2}=3 T_{He}\)
4. \(\frac{T_{H_{2}}}{5}=\frac{T_{\text {He }}}{3}\)
1. \(T_{H_{2}}=T_{H e}\)
2. \(\frac{T_{H_2}}{2}=\frac{T_{He}}{4}\)
3. \(5 T_{H_2}=3 T_{He}\)
4. \(\frac{T_{H_{2}}}{5}=\frac{T_{\text {He }}}{3}\)
Subtopic: Â Kinetic Energy of an Ideal Gas |
 52%
From NCERT
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Which of the following parameters is the same for molecules of all gases at a given temperature?
| 1. | mass | 2. | speed |
| 3. | momentum | 4. | kinetic energy |
Subtopic: Â Kinetic Energy of an Ideal Gas |
 70%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Match Column - I and Column - II and choose the correct match from the given choices.
| Column - I | Column - II | ||
| (A) | root mean square speed of gas molecules | (P) | \(\frac13nm\bar v^2\) |
| (B) | the pressure exerted by an ideal gas | (Q) | \( \sqrt{\frac{3 R T}{M}} \) |
| (C) | the average kinetic energy of a molecule | (R) | \( \frac{5}{2} R T \) |
| (D) | the total internal energy of 1 mole of a diatomic gas | (S) | \(\frac32k_BT\) |
| (A) | (B) | (C) | (D) | |
| 1. | (Q) | (P) | (S) | (R) |
| 2. | (R) | (Q) | (P) | (S) |
| 3. | (R) | (P) | (S) | (Q) |
| 4. | (Q) | (R) | (S) | (P) |
Subtopic: Â Kinetic Energy of an Ideal Gas |
 76%
From NCERT
NEET - 2021
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A cubic vessel (with faces horizontal + vertical) contains an ideal gas at NTP. The vessel is being carried by a rocket which is moving at a speed of in the vertical direction. The pressure of the gas inside the vessel as observed by us on the ground:
| 1. | remains the same because \(500\) \(\mathrm{ms^{-1}}\) is very much smaller than \(v_{rms}\) of the gas. |
| 2. | remains the same because the motion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls. |
| 3. | will increase by a factor equal to \(\Big(\frac{v_{rms}^2+(500)^2}{v_{rms}^2}\Big)\)where \(v_{rms}^2\) was the original mean square velocity of the gas. |
| 4. | will be different on the top wall and bottom wall of the vessel. |
Subtopic: Â Kinetic Energy of an Ideal Gas |
 66%
From NCERT
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- 1(current)
Q. No.
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