The specific heat of a gas:

1. has only two values \(Cp\) and \(Cv\).   
2. has a unique value at a given temperature.
3. can have any value between 0 and  ∞.
4. depends upon the mass of the gas.
 

Subtopic:  Specific Heat |
 57%
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For hydrogen gas \(C_P-C_V=a\) and for oxygen gas \(C_P-C_V=b\) where molar specific heats are given. So the relation between \(a\) and \(b\) is given by: (where \(C_p\) and \(C_V\) in J mol-1 K-1)
1. \(a=16b\)
2. \(b=16a\)
3. \(a=4b\)
4. \(a=b\)

Subtopic:  Specific Heat |
 63%
From NCERT
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For a gas the difference between the two specific heats is 4150 J/kg K. What is the specific heats at constant volume of gas if the ratio of specific heat is 1.4

1. 8475 J/Kg K                           

2. 5186 J/Kg K

3. 1600 J/Kg K                           

4. 10375 J/Kg K

Subtopic:  Specific Heat |
 75%
From NCERT
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The specific heat of 1 mole of an ideal gas at constant pressure, CP and at constant volume ,CV are given. Then-

1. CP of hydrogen gas is 52R

2. CV of hydrogen gas is 72R

3. H2 has very small values of CP and CV

4. CP-CV= 1.99 cal/mole-K for H2

Subtopic:  Specific Heat |
 66%
From NCERT
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One mole of ideal monoatomic gas γ=5/3 is mixed with one mole of diatomic gas γ=7/5. What is γ for the mixture? γ denotes the ratio of specific heat at constant pressure, to that at constant volume

1.  3/2                             

2.  23/15

3.  35/23                         

4.  4/3

Subtopic:  Specific Heat |
 62%
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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

Subtopic:  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

Subtopic:  Specific Heat |
 57%
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The number of translational degrees of freedom for a diatomic gas is

1.  2                           

2.  3

3.  5                           

4.  6

Subtopic:  Law of Equipartition of Energy |
 71%
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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

Subtopic:  Specific Heat |
 60%
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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

Subtopic:  Kinetic Energy of an Ideal Gas |
 91%
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