A cubical box with porous walls containing an equal number of O2 and H2 molecules is placed in a large evacuated chamber. The entire system is maintained at constant temperature T. The ratio of vrms of O2 molecules to that of the vrms of H2 molecules, found in the chamber outside the box after a short interval is

1.  122                             

2.  14

3.  12                               

4.  2

Concept Questions :-

Types of velocity
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The degrees of freedom of a triatomic gas is

1.  2                                 

2.  4

3.  6                                 

3.  8

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Law of equipartition of energy
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The value of CV for one mole of neon gas is

1.  12R                           

2.  32R

3.  52R                           

4.  72R

Concept Questions :-

Specific heat
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At constant volume, for different diatomic gases the molar specific heat is

1. Same and 3 cal/mole/°C approximately

2. Exactly equal and its value is 4 cal/mole/°C

3. Will be totally different

4. Approximately equal and its value is 5 cal/mole/°C

Concept Questions :-

Specific heat
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At constant volume the specific heat of a gas is 3R2 , then the value of 'γ' will be

1.  32                             

2.  52

3.  53                             

4.  None of the above

Concept Questions :-

Specific heat
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The relation between two specific heats of a gas is

1.  CP-CV=RJ                               

2.  CV-CP=RJ

3.  CP-CV=J                                 

4.  CV-CP=J

Concept Questions :-

Specific heat
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The specific heat of an ideal gas is

1.  Proportional to T                     

2.  Proportional to T2

3.  Proportional to T3                   

4.  Independent of T

Concept Questions :-

Specific heat
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Molar specific heat at constant volume is CV for a monoatomic gas is

1.  32R                                     

2.  52R

3.  3R                                       

4.  2R

Concept Questions :-

Specific heat
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The following sets of values for CV and CP of a gas has been reported by different students. The units are cal/gm-mole-K. Which of these sets is most reliable

1. CV=3, CP=5                                 

2. CV=4, CP=6

3. CV=3, CP=2                                 

4. CV=3, CP=4.2

Concept Questions :-

Specific heat
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The specific heats at constant pressure is greater than that of the same gas at constant volume because

1. At constant pressure work is done in expanding the gas

2. At constant volume work is done in expanding the gas

3. The molecular attraction increases more at constant pressure

4. The molecular vibration increases more at constant pressure

Concept Questions :-

Specific heat
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