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
The relation between two specific heats (in cal/mol) of a gas is:
1.
2.
3.
4.
What is the velocity of a wave in a monoatomic gas having pressure 1 kilopascal and density ?
1.
2.
3. Zero
4. None of these
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. | \(16 \over 1\) |
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. \(V_\text{O}>V_\text{H}>V_\text{N}\)
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. | \(\dfrac{T_1T_2(P_1V_1+P_2V_2)}{P_1V_1T_1+P_2V_2T_2}\) |
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.
2.
3. 2v
4.
The pressure in a diatomic gas increases from to , when its volume is increased from . The increase in internal energy will be:
1.
2.
3.
4.
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. |
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. |