In an adiabatic change, the pressure and temperature of a monatomic gas are related as , where c equals:
If an oxygen atom and hydrogen atom are having the same temperature, then ratio of their average kinetic energy is
1 : 1
2 : 1
4 : 1
1 : 4
The kinetic energy of 1 gram of hydrogen gas at 27o C will be
If γ is the ratio of specific heats of a perfect gas, then the number of degrees of freedom of a molecule of the gas is:
One kg of a diatomic gas is at a pressure of 8×104N/m2. The density of the gas is 4 kg/m3. What is the energy of the gas due to its thermal motion?
3×104 J
5×104 J
6×104 J
7×104 J
The root mean square velocity of a gas molecule of mass m at a given temperature is proportional to:
m0
m
m-1/2
A gas at a temperature of 250 K is contained in a closed vessel. If the gas is heated through 1 K, then percentage increase in its pressure is
0.1 %
0.2 %
0.3 %
0.4 %
The temperature of H2 at which the rms velocity of its molecules is seven times the rms velocity of the molecules of nitrogen at 300 K is:
2100 K
1700 K
1350 K
1050 K
The temperature of a gas is raised from 270C to 9270C. What change will occur to the rms molecular speed ?
gets halved
gets doubled
gets times the earlier value
remains unchanged
The average translational energy and the r.m.s speed of molecules in a sample of oxygen gas at 300 K are 6.21×10-21 J and 484 ms-1 respectively. The corresponding values at 600 K are nearly equal to : (assume ideal gas behavior)
12.42×10-21 J, 968 ms-1
8.78×10-21 J, 684 ms-1
6.21×10-21 J, 968 ms-1
12.42×10-21 J, 684 ms-1
