- 1(current)
Q. No.Which of the following gases has maximum rms speed at a given temperature?
| 1. | hydrogen | 2. | nitrogen |
| 3. | oxygen | 4. | carbon dioxide |
Subtopic: Types of Velocities |
88%
From NCERT
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The mean square speed of the molecules of a gas at absolute temperature \(T\) is proportional to:
1. \(1 \over T\)
2. \( \sqrt{T} \)
3. \(T\)
4. \(T^2\)
Subtopic: Types of Velocities |
From NCERT
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Suppose a container is evacuated to leave just one molecule of a gas in it. Let \(v_a\) and \(v_{rms}\) represent the average speed and the RMS speed of the gas.
| 1. | \(v_a>v_{rms}\) |
| 2. | \(v_a<v_{rms}\) |
| 3. | \(v_a=v_{rms}\) |
| 4. | \(v_{rms}\) is undefined |
Subtopic: Types of Velocities |
From NCERT
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The rms speed of oxygen at room temperature is about \(500\) m/s. The rms speed of hydrogen at the same temperature is about:
1. \(125\) m s–1
2. \(2000\) m s–1
3. \(8000\) m s–1
4. \(31\) m s–1
1. \(125\) m s–1
2. \(2000\) m s–1
3. \(8000\) m s–1
4. \(31\) m s–1
Subtopic: Types of Velocities |
82%
From NCERT
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The rms speed of oxygen molecules in a gas is \(v.\) If the temperature is doubled and the oxygen molecules dissociate into oxygen atoms, the rms speed will become:
1. \(v\)
2. \(v\sqrt{2}\)
3. \(2v\)
4. \(4v\)
1. \(v\)
2. \(v\sqrt{2}\)
3. \(2v\)
4. \(4v\)
Subtopic: Types of Velocities |
67%
From NCERT
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The quantity; \(\dfrac {PV}{kT}\) represents:
| 1. | mass of the gas |
| 2. | kinetic energy of the gas |
| 3. | number of moles of the gas |
| 4. | number of molecules in the gas |
Subtopic: Types of Velocities |
70%
From NCERT
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Consider a mixture of oxygen and hydrogen kept at room temperature. As compared to a hydrogen molecule, an oxygen molecule hits the wall:
| (a) | with a greater average speed |
| (b) | with a smaller average speed |
| (c) | with greater average kinetic energy |
| (d) | with smaller average kinetic energy |
Choose the correct option from the options given below:
| 1. | (a) and (b) only |
| 2. | (b) only |
| 3. | (c) and (d) only |
| 4. | (a) and (d) only |
Subtopic: Types of Velocities |
81%
From NCERT
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Which of the following quantities is zero on average for the molecules of an ideal gas in equilibrium?
| (a) | kinetic energy | (b) | momentum |
| (c) | density | (d) | speed |
Choose the correct option from the given ones:
| 1. | (a) and (b) only |
| 2. | (b) only |
| 3. | (c) and (d) only |
| 4. | (a) and (d) only |
Subtopic: Types of Velocities |
65%
From NCERT
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Keeping the number of moles, volume and temperature the same, which of the following are the same for all ideal gases ?
(a) rms speed of a molecule
(b) density
(c) pressure
(d) average magnitude of momentum.
Chooose the correct option
1. (a), (b)
2. (b) , (c)
3. (c) only
4. (a) (d)
Subtopic: Types of Velocities |
64%
From NCERT
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- 1(current)
Q. No.
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