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 |
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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 Subtopic: Types of Velocities | From NCERT To view explanation, please take trial in the course. NEET 2025 - Target Batch Hints To view explanation, please take trial in the course. NEET 2025 - Target Batch 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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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