Q. No.Which of the following gases has maximum rms speed at a given temperature?
1.
hydrogen
2.
nitrogen
3.
oxygen
4.
carbon dioxide
The following figure shows graphs of pressure versus density for an ideal gas at two temperatures \(T_1\) and \(T_2.\)
Then:
| 1. | \(T_1>T_2\) |
| 2. | \(T_1 = T_2\) |
| 3. | \(T_1<T_2\) |
| 4. | any of the three is possible |
The mean square speed of the molecules of a gas at absolute temperature \(T\) is proportional to:
1. \(1 \over T\)
2. \( \sqrt{T} \)
3. \(T\)
4. \(T^2\)
| 1. | \(v_a>v_{rms}\) |
| 2. | \(v_a<v_{rms}\) |
| 3. | \(v_a=v_{rms}\) |
| 4. | \(v_{rms}\) is undefined |
1. \(125\) m s–1
2. \(2000\) m s–1
3. \(8000\) m s–1
4. \(31\) m s–1
The pressure of a gas kept in an isothermal container is \(200~\text{kPa}.\) If half the gas is removed from it, the pressure will be:
1. \(100~\text{kPa}\)
2. \(200~\text{kPa}\)
3. \(400~\text{kPa}\)
4. \(800~\text{kPa}\)
1. \(v\)
2. \(v\sqrt{2}\)
3. \(2v\)
4. \(4v\)
| 1. | mass of the gas |
| 2. | kinetic energy of the gas |
| 3. | number of moles of the gas |
| 4. | number of molecules in the gas |
The process on an ideal gas as shown in the figure given below is:
1. isothermal
2. isobaric
3. isochoric
4. none of these
Consider a collision between an oxygen molecule and a hydrogen molecule in a mixture of oxygen and hydrogen kept at room temperature. Which of the following are possible?
| (a) | The kinetic energies of both the molecules increase. |
| (b) | The kinetic energies of both the molecules decrease. |
| (c) | The kinetic energy of the oxygen molecule increases and that of the hydrogen molecule decreases. |
| (d) | The kinetic energy of the hydrogen molecule increases and that of the oxygen molecule decreases. |
1. (a), (b)
2. (b), (c)
3. (c), (d)
4. (a), (d)
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