A gaseous mixture contains equal number of hydrogen and nitrogen molecules. Specific heat measurements on this mixture at temperatures below 100 K would indicate that the value of γ (ratio of specific heats) for this mixture is

1.  3/2                           

2.  4/3

3.  5/3                           

4.  7/5

Concept Questions :-

Specific heat
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One mole of monoatomic gas and three moles of diatomic gas are put together in a container. The molar specific heat in J K-1 mol-1 at constant volume is R=8.3 J K-1 mol-1

1.  18.7                           

2.  18.9

3.  19.2                           

4.  None of the above

Concept Questions :-

Specific heat
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The number of translational degrees of freedom for a diatomic gas is

1.  2                           

2.  3

3.  5                           

4.  6

Concept Questions :-

Specific heat
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For a gas if ratio of specific heats at constant pressure and volume is γ then value of degrees of freedom is

1.  3γ-12γ-1                                       

2.  2γ-1

3.  92γ-1                               

4.  252γ-1

Concept Questions :-

Specific heat
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If a gas has n degrees of freedom ratio of specific heats of gas is

1.  1+n2                         

2.  1+1n

3.  1+n2                         

4.  1+2n

Concept Questions :-

Specific heat
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A gaseous mixture consists of 16g of helium and 16g of oxygen. The ratio CPCV of the mixture is

1.  1.4                       

2.  1.54

3.  1.59                     

4.  1.62

Concept Questions :-

Specific heat
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The pressure exerted by the gas on the walls of the container because

1. It loses kinetic energy

2. It sticks with the walls

3. On collision with the walls there is a change in momentum

4. It is accelerated towards the walls

Concept Questions :-

Kinetic energy of gas
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Gas at a pressure P0 is contained in a vessel. If the masses of all the molecules are halved and their speeds are doubled, the resulting pressure P will be equal to

1.  4P0                                 

2.  2P0

3.  P0                                   

4.  P02

Concept Questions :-

Types of velocity
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A box contains n molecules of a gas. How will the pressure of the gas be effected, if the number of molecules is made 2n?

1. Pressure will decrease

2. Pressure will remain unchanged

3. Pressure will be doubled

4. Pressure will become three times

Concept Questions :-

Kinetic energy of gas
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At a given temperature, the pressure of an ideal gas of density ρ is proportional to

1. 1ρ2                                   

2. 1ρ

3. ρ2                                     

4. ρ

Concept Questions :-

Kinetic energy of gas
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