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
A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically. The ratio of its final pressure to the initial pressure is (Given: the ratio of the specific heats of the given gas to be 5/3) :
32
40/3
24/5
8
An electric fan is switched on in a closed room. The air in the room
is cooled
is heated
maintains its temperature
is heated or cooled depending upon atmosphere pressure
If a gas has n degrees of freedom, ratio of specific heat of gas is:
During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio Cp / Cv for the gas is:
4/3
2
5/3
3/2
The number of degrees of freedom for a diatomic gas molecule is:
3
5
6
A vessel contains 1 mole of O2 gas (relative molar mass 32) at a temperature T. The pressure of the gas is P. An identical vessel containing one mole of He gas (relative molar mass 4) at a temperature 2T ,the pressure will be :
P/8
P
2 P
8 P
From the following statements concerning ideal gas at any given temperature T, select the correct one(s) :
The co-efficient of volume expansion at constant pressure is the same for all ideal gases.
The average translational kinetic energy per molecule of oxygen gas is 3 kT, k being Boltzmann constant
The mean-free path of molecules increases with increases in the pressure.
In a gaseous mixture, the average translational kinetic energy of the molecules of each component is different.
the average velocity of a gas becomes 4 times, then what will be the effect on rms velocity at the same temperature?
1.4 times
4 times
3 times
2 times
The kinetic energy of 1 gram of hydrogen gas at 27o C will be
