Which one the following graphs represents the behaviour of an ideal gas

1.

2.

3.

4.

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The curve between absolute temperature and ${{\mathrm{v}}^{2}}_{\mathrm{rms}}$ is

1.

2.

3.

4.

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Volume-temperature graph at atmospheric pressure for a monoatomic gas  is

1.

2.

3.

4.

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Under constant temperature, graph between $\mathrm{P}$ and $1/\mathrm{V}$ is

1. Parabola

2. Hyperbola

3. Straight line

4. Circle

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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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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 ${\mathrm{m}}_{1}$ and ${\mathrm{m}}_{2}$ of the gas respectively in the figure given, then

1.

2.

3.

4. None of these

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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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PV versus T graph of equal masses of ${\mathrm{H}}_{2}$$\mathrm{He}$ and ${\mathrm{O}}_{2}$ is shown in fig. Choose the correct alternative

1. C corresponds to ${\mathrm{H}}_{2}$, B to $\mathrm{He}$ and A to ${\mathrm{O}}_{2}$

2. A corresponds to $\mathrm{He}$, B to ${\mathrm{H}}_{2}$ and C to ${\mathrm{O}}_{2}$

3. A corresponds to $\mathrm{He}$, B to ${\mathrm{O}}_{2}$ and C to ${\mathrm{H}}_{2}$

4. A corresponds to ${\mathrm{O}}_{2}$, B to ${\mathrm{H}}_{2}$ and C to ${\mathrm{H}}_{2}$

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

1.

2.

3.

4. None of the above

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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