What is the mass of 2 liters of nitrogen at 22.4 atmospheric pressure and 273 K?
1. 28 g
2. 14 g
3. 56 g
4. None of these
Mean kinetic energy per degree of freedom of gas molecules is:
1.
2. kT
3.
4.
The root-mean-square speed of hydrogen molecules at 300 K is 1930 m/s. Then the root mean square speed of oxygen molecules at 900 K will be: [MH CET 2002; Odisha JEE 2010]
1. 1930 m/s
2. 836 m/s
3. 643 m/s
4. m/s
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 \(H_2\) |
According to the kinetic theory of gases, at absolute zero temperature: [AIIM 1998; UPSEAT 2000]
1. Water freezes
2. Liquid helium freezes
3. Molecular motion stops
4. Liquid hydrogen freezes
Molecular weight of two gases are \(M_1\) and \(M_2.\) At any temperature, the ratio of root mean square velocities \(v_1\) and \(v_2\) will be:
1. \(\sqrt{\frac{M_1}{M_2}}\)
2. \(\sqrt{\frac{M_2}{M_1}}\)
3. \(\sqrt{\frac{M_1+M_2}{M_1-M_2}}\)
4. \(\sqrt{\frac{M_1-M_2}{M_1+M_2}}\)
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
The temperature of an ideal gas is increased from to . The r.m.s. speed of its molecules becomes-
1. twice
2. half
3. four times
4. one fourth
The equation is known as:
1. Perfect gas equation
2. Joule Thomson's equation
3. Vander Waal's equation
4. Maxwell's equation
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 =