One mole of an ideal gas requires 207 J heat to raise the temperature by 10 K when heated at constant pressure. If the same gas is heated at constant volume to raise the temperature by the same 10 K, the heat required is

1.  198.7 J                 

2.  29 J

3.  215.3 J                 

4.  124 J

(Given the gas constant R=8.3 J/molK)

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The expansion of an ideal gas of mass m at a constant pressure P is given by the straight line D. Then the expansion of the same ideal gas of mass 2m at a pressure P/ 2 is given by the straight line , where number on graphs indicate slope , is- 

1.  E                           

2.  C

3.  B                           

4.  A

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An experiment is carried on a fixed amount of gas at different temperatures and at high pressure such that it deviates from the ideal gas behaviour. The variation of PVRT with P is shown in the diagram. The correct variation will correspond to

1. Curve A                             

2. Curve B

3. Curve C                             

4. Curve D

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The graph which represent the variation of mean kinetic energy of molecules with temperature t°C is 

1.                               

2. 

 

3.                             

4.  

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The adjoining figure shows graph of pressure and volume of a gas at two temperatures T1 and T2. Which of the following interferences is correct

 

1.  T1>T2                                 

2. T1=T2

3. T1<T2                                   

4. No interference can be drawn

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The expansion of until mass of a perfect gas at constant pressure is shown in the diagram. Here

1. a = volume, b = °C temperature

2. a = volume, b = K temperature

3. a = °C temperature, b = volume

4. a = K temperature, b = volume

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An ideal gas is initially at temperature T and volume V. Its volume is increased by V due to an increase in temperature T, pressure remaining constant. The quantity δ=V/VT varies with temperature as

1.                                    

2. 

 

3.                                    

4. 

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Pressure versus temperature graph of an ideal gas of equal number of moles of different volumes are plotted as shown in figure. Choose the correct alternative

 

1. V1=V2 , V3=V4  and V2>V3

2. V1=V2 , V3=V4  and V2<V3

3. V1=V2 , V3=V4

4. V4>V3 > V2>V1

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Pressure versus temperature graph of an ideal gas is as shown in figure. Density of the gas at point A is ρ0 . Density at B will be

    

1.  34ρ0                             

2.  32ρ0

3.  43ρ0                             

4.  2 ρ0

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The figure shows graphs of pressure versus density for an ideal gas at two temperatures T1 and T2

      

1. T1>T2                       

2. T1=T2

3. T1<T2                       

4. Nothing can be predicted

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