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 |
 89%
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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 |
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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 |
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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 
Subtopic:  Types of Velocities |
 82%
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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. \(4v\)
Subtopic:  Types of Velocities |
 66%
From NCERT
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The quantity  \( {pV} \over kT\) 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 |
 68%
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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 greater average speed
(b) with smaller average speed
(c) with greater average kinetic energy
(d) with smaller average kinetic energy
Choose the correct option: 
1. (a), (b)  2. (b) only
3. (c), (d)  4. (a), (d) 
Subtopic:  Types of Velocities |
 81%
From NCERT
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Which of the following quantities is zero on an average for the molecules of an ideal gas in equilibrium ?

(a) kinetic energy

(b) momentum

(c) density

(d) speed

Chooose the correct option 

1.  (a), (b) 

2. (b)  only

3. (c) , (d) 

4. (a) (d) 

Subtopic:  Types of Velocities |
 63%
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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 |
 63%
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