The value of densities of two diatomic gases at constant temperature and pressure are d1 and d2 , then the ratio of the speed of sound in these gases will be :

1. d1d2                                   

2. d2/d1

3. d1/d2                             

4. d1d2

Concept Questions :-

Types of velocity
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By what factor the r.m.s. velocity will change, if the temperature is raised from 27°C to 327°C

1.  2                                 

2.  2

3.  22                               

4.  1

Concept Questions :-

Types of velocity
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At a given temperature if Vrms is the root mean square velocity of the molecules of a gas and Vs the velocity of sound in it, then these are related as γ=CPCv

1. Vrms=Vs                             

2. Vrms=3γ×Vs

3. Vrms=γ3×Vs                   

4. Vrms=3γ×Vs

Concept Questions :-

Types of velocity
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Let A and B the two gases and given : TAMA=4.TBMB ; where T is the temperature and M is molecular mass. If CA and CB are the r.m.s. speed, then the ratio CACB will be equal to

1. 2                         

2. 4

3. 1                         

4. 0.5

Concept Questions :-

Types of velocity
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For a gas at a temperature the root-mean-square velocity vrms , the most probable speed vmp , and the average speed vav obey the relationship

1. vav>vrms>vmp                               

2. vrms>vav>vmp

3. vmp>vav>vrms                               

4. vmp>vrms>vav

Concept Questions :-

Types of velocity
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If VH, VN and VO denote the root-mean square velocities of molecules of hydrogen, nitrogen and oxygen respectively at a given temperature, then

1. VN>VO>VH                         

2. VH>VN>VO

3. VO>VN>VH                         

4. VO>VH>VN

Concept Questions :-

Types of velocity
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The r.m.s. speed of a group of 7 gas molecules having speeds 6, 4, 2, 0, -2, -4, -6 m/s is

1. 1.5 m/s                                   

2. 3.4 m/s

3. 9 m/s                                       

4. 4 m/s

Concept Questions :-

Types of velocity
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If the ratio of vapour density for hydrogen and oxygen is 116 , then under constant pressure the ratio of their rms velocities will be

1. 41                                   

2. 14

3. 116                                 

4. 161

Concept Questions :-

Types of velocity
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Molecular motion shows itself as

1. Temperature                     

2. Internal Energy

3. Friction                             

4. Viscosity

Concept Questions :-

Kinetic energy of gas
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What is the velocity of wave in monoatomic gas having pressure 1 kilopascal and density 2.6 kg/m3 ?

1.  3.6 m/s                                 

2.  8.9×103 m/s

3.  Zero                                       

4.  None of these

Concept Questions :-

Types of velocity
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