A pressure P - absolute temperature T diagram was obtained when a given mass of gas was heated. During the heating process from the state 1 to state 2 the volume

                   

1. Remained constant                   

2. Decreased

3. Increased                                 

4. Changed erratically

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A volume V and pressure P diagram was obtained from state 1 to state 2 when a given mass of a gas is subjected to temperature changes. During this process the gas is

1. Heated continuously

2. Cooled continuously

3. Heated in the beginning and cooled towards the end

4. Cooled in the beginning and heated towards the end

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The figure shows the volume V versus temperature T graphs for a certain mass of a perfect gas at two constant pressures of P1 and P2 . What interference can you draw from the graphs

1. P1 > P2

2. P1 < P2

3.  P1=P2

4. No interference can be drawn due to insufficient information

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The change in volume V with respect to an increase in pressure P has been shown in the figure for a non-ideal gas at four different temperatures T1, T2,T3 and T4 . The critical temperature of the gas is

1. T1                                 

2. T2

3. T3                                 

4. T4

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In the adjoining figure, various isothermals are shown for a real gas. Then

1. EF represents liquification

2. CB represents liquification

3. HI represents the critical temperature

4. AB represents gas at a high temperature

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From the following P-T graph what interference can be drawn

 

1. V2 > V1                             

2. V2 < V1

3. V2 = V1                             

4. None of the above

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PV versus T graph of equal masses of H2He and O2 is shown in fig. Choose the correct alternative

    

1. C corresponds to H2, B to He and A to O2

2. A corresponds to He, B to H2 and C to O2

3. A corresponds to He, B to O2 and C to H2

4. A corresponds to O2, B to H2 and C to H2

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Pressure versus temperature graph of an ideal gas at constant volume V of an ideal gas is shown by the straight line A. Now mass of the gas is doubled and the volume is halved, then the corresponding pressure versus temperature graph will be shown by the line

1. A                           

2. B

3. C                         

 4. None of these

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Two different isotherms representing the relationship between pressure P and volume V at a given temperature of the same ideal gas are shown for masses m1 and m2 of the gas respectively in the figure given, then

  

1. m1 > m2                             

2. m1 = m2

3. m1 < m2                             

4. None of these

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Two different masses m and 3m of an ideal gas are heated separately in a vessel of constant volume, the pressure P and absolute temperature T, graphs for these two cases are shown in the figure as A and B. The ratio of slopes of curves B to A is

 

1.  3 : 1                           

2.  1 : 3

3.  9 : 1                           

4.  1 : 9

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