Assertion (A): | As a gas bubble rises from the bottom of a lake, its volume decreases. |
Reason (R): | As the gas bubble rises from the bottom of a lake-the pressure of the gas within decreases. |
1. | (A) is True but (R) is False. |
2. | (A) is False but (R) is True. |
3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Which of the following diagrams (figure) depicts ideal gas behaviour?
1. (a), (c)
2. (a), (d)
3. (c), (d)
4. (a), (b)
A cylinder contains hydrogen gas at a pressure of \(249~\text{kPa}\) and temperature \(27^\circ~\mathrm{C}.\) Its density is: (\(R=8.3~\text{J mol}^{-1}K^{-1}\))
1. \(0.2~\text{kg/m}^{3}\)
2. \(0.1~\text{kg/m}^{3}\)
3. \(0.02~\text{kg/m}^{3}\)
4. \(0.5~\text{kg/m}^{3}\)
The process on an ideal gas as shown in the figure given below is:
1. isothermal
2. isobaric
3. isochoric
4. none of these
An ideal gas equation can be written as where and are respectively:
1. | mass density, the mass of the gas |
2. | number density, molar mass |
3. | mass density, molar mass |
4. | number density, the mass of the gas |
The pressure exerted by a gas enclosed within a room is due to:
1. | collisions of the gas molecules with the walls of the room. |
2. | repulsive force between molecules of the gas. |
3. | weight of the molecules of the gas. |
4. | angular momentum of the molecules. |
Which of the following parameters is the same for molecules of all gases at a given temperature?
1. mass
2. speed
3. momentum
4. kinetic energy