The relation between two specific heats (in cal/mol) of a gas is:
1.  CP-CV=RJ                               

2.  CV-CP=RJ

3.  CP-CV=J                                 

4.  CV-CP=J

Subtopic:  Specific Heat |
 88%
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If the mean free path of atoms is doubled , then the pressure of the gas will become:

1. P/4                       

2. P/2

3. P/8                       

4. P

Subtopic:  Mean Free Path |
 72%
From NCERT
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What is the velocity of a wave in a monoatomic gas having pressure 1 kilopascal and density 2.6 kg/m3 ?

1.  3.6 m/s                                 

2.  8.9×103 m/s

3.  Zero                                       

4.  None of these

Subtopic:  Types of Velocities |
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If the ratio of vapour density for hydrogen and oxygen is \(1 \over 16\), then under constant pressure, the ratio of their rms velocities will be:

1. \(4 \over 1\) 2. \(1 \over 4\)
3. \(1 \over 16\) 4. \(16 \over 1\)
Subtopic:  Types of Velocities |
 77%
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If \(V_\text{H}\),\(V_\text{N}\) and \(V_\text{O}\) denote the root-mean square velocities of molecules of hydrogen, nitrogen and oxygen respectively at a given temperature, then:
1. \(V_\text{N}>V_\text{O}>V_\text{H}\)
2. \(V_\text{H}>V_\text{N}>V_\text{O}\)
3. \(V_\text{O}>V_\text{N}>V_\text{H}\)
4. \(V_\text{O}>V_\text{H}>V_\text{N}\)

Subtopic:  Types of Velocities |
 90%
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Two thermally insulated vessels \(1\) and \(2\) are filled with air at temperatures \(\mathrm{T_1},\) \(\mathrm{T_2},\) volume \(\mathrm{V_1},\) \(\mathrm{V_2}\) and pressure \(\mathrm{P_1},\) \(\mathrm{P_2}\) respectively. If the valve joining the two vessels is opened, the temperature inside the vessel at equilibrium will be:

1. \(T_1+T_2\) 2. \(\dfrac{T_1+T_2}{2}\)
3. \(\dfrac{T_1T_2(P_1V_1+P_2V_2)}{P_1V_1T_2+P_2V_2T_1}\) 4. \(\dfrac{T_1T_2(P_1V_1+P_2V_2)}{P_1V_1T_1+P_2V_2T_2}\)
Subtopic:  Ideal Gas Equation |
 69%
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The rms speed of oxygen atoms is v. If the temperature is halved and the oxygen atoms combine to form oxygen molecules, then the rms speed will be:

1. v2

2. v2

3. 2v

4. v2

Subtopic:  Types of Velocities |
 70%
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The pressure in a diatomic gas increases from P0 to 3P0, when its volume is increased from V0 to 2V0. The increase in internal energy  will be:
     
1. 6PoV0

2. 8.5PoV0

3. 12.5PoV0

4. 14.5PoV0

Subtopic:  Law of Equipartition of Energy |
 66%
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How does the pressure of an ideal gas change during the process shown in the diagram?
       

1.  pressure increases continuously.
2.  pressure decreases continuously.
3.  pressure first increases and then decreases.
4. pressure first decreases and then increases.

Subtopic:  Ideal Gas Equation |
 56%
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How does the temperature change when the state of an ideal gas is changed according to the process shown in the figure?

           

1.  temperature increases continuously.
2. temperature decreases continuously.
3. temperature first increases and then decreases.
4. temperature first decreases and then increases.

Subtopic:  Ideal Gas Equation |
 72%
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