Mean kinetic energy per degree of freedom of gas molecules is:
1.
2. kT
3.
4.
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
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 , and are shown in the figure. Choose the correct alternative:
1. | A corresponds to , B to and C to | 2. | A corresponds to , B to , and C to |
3. | A corresponds to , B to , and C to | 4. | A corresponds to , B to and C to |
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
The molecular weight of two gases is and At any temperature, the ratio of root mean square velocities and will be:
1.
2.
3.
4.
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 =