The figure shows two connected flasks. The volume of flask-1 is twice that of flask-2. The system is filled with an ideal gas at temperatures of \(100\) K and \(200\) K, respectively. If the mass of the gas in flask-1 is \(m,\) what is the mass of the gas in flask-2 when the system reaches equilibrium?
1. \(m\)
2. \(m/2\)
3. \(m/4\)
4. \(m/8\)
PV versus T graphs of equal masses of \(H_2\), \(He\) and \(O_2\) are shown in the figure. Choose the correct alternative:
1. | A corresponds to \(H_2\), B to \(He\) and C to \(O_2\) | 2. | A corresponds to \(He\), B to \(H_2\), and C to \(O_2\) |
3. | A corresponds to \(He\), B to \(O_2\), and C to \(H_2\) | 4. | A corresponds to \(O_2\), B to \(He\) and C to \(H_2\) |
Which one of the following graphs represent the behaviour of an ideal gas at constant temperature?
1. | 2. | ||
3. | 4. |
An ideal gas is found to obey an additional law = constant. The gas is initially at temperature T and volume V. When it expands to a volume 2 V, the temperature becomes:
1. T
2. 2T
3. 2T
4. 4T
An ideal gas is filled in a vessel, then
1. If it is placed inside a moving train, its temperature increases
2. Its centre of mass moves randomly
3. Its temperature remains constant in a moving car
4. None of these
From the T-P graph, what conclusion can be drawn?
1.
2.
3.
4. Nothing can be predicted
The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume V, will be: (where R is the constant)
1. PV = 5RT
2. PV =
3. PV =
4. PV =
One liter of gas A and two liters of gas B, both having the same temperature 100C and the same pressure 2.5 bar will have the ratio of average kinetic energies of their molecules as:
1. 1:1
2. 1:2
3. 1:4
4. 4:1
The mean translational kinetic energy of a perfect gas molecule at the temperature T Kelvin is:
1.
2. kT
3.
4. 2 kT
The average kinetic energy of a helium atom at is: [MP PMT 2004]
1. Less than 1 eV
2. A few KeV
3. 50-60 eV
4. 13.6 eV