In the PV graph shown below for an ideal diatomic gas, the change in the internal energy is:
1.
2.
3.
4.
The figure shows a process for a gas in which pressure (P) and volume (V) of the gas change. If and are the molar heat capacities of the gas during the processes AB and BC respectively, then:
1.
2.
3.
4.
The change in the internal energy of an ideal gas does not depend on?
1. | Number of moles |
2. | Change in temperature |
3. | Specific heat at constant pressure \(C_p\) of the gas |
4. | Specific heat at constant volume \(C_v\) of the gas |
When the gas in an open container is heated, the mean free path:
1. | Increases |
2. | Decreases |
3. | Remains the same |
4. | Any of the above depending on the molar mass |
The translational kinetic energy of oxygen molecules at room temperature is 60 J. Their rotational kinetic energy will be?
1. 40 J
2. 60 J
3. 50 J
4. 20 J
Two isotherms are drawn at temperatures as shown. The ratio of mean speed at is:
1. | 1: 4 | 2. | 1: 2 |
3. | 2: 1 | 4. | 4: 1 |
The translational kinetic energy of n moles of a diatomic gas at absolute temperature T is given by:
1.
2.
3.
4.
If the pressure of a gas is doubled, then the average kinetic energy per unit volume of the gas will be:
1. | half of its initial value. | 2. | double its initial value. |
3. | one-fourth of its initial value. | 4. | four times its initial value. |
Maxwell's speed distribution graph is drawn as shown below. The most probable speed of the gas molecules is:
1. 4 km/s
2. Between 3 km/s and 1 km/s
3. Any value between 2 km/s and 6 km/s
4. More than 4 km/s
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. |