We have a jar filled with gas characteristed by parameters P, V and T and another jar B filled with a gas with a gas with parameters 2 P, V/4, 2 T; where the symbols have their usual meanings. The ratio of the number of molecules of jar A to those of jar B is:
1:1
1:2
2:1
4:1
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 average translational kinetic energy of O2 molecules (relative molar mass 32) at a particular temperature is 0.048 eV. The translational kinetic energy of N2 molecules (relative molar mass 28) in eV at the same temperature is:
0.0015
0.003
0.048
0.768
Identify the correct relation for the slope at any point on the curve in PV graph for a gas ?
The temperature of an ideal gas is increased from 120 K to 480 K. If at 120 K, the root mean square velocity of gas molecules is v, at 480 K it becomes
4 v
2 v
v/2
v/4
In thermal equilibrium, the average velocity of a gas molecule is
proportional to T3
proportional to T2
proportional to
zero
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.
When we heat a gas-sample from 270 C to 3270 C, then the initial average kinetic energy of the molecules was E. What will be the average kinetic energy?
327 E
300 E
2 E
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 %
An absolute zero is the temperature at which:
Water solidifies
All gases become liquid
rms velocity become zero
Temperature equal to 0 fahrenheit.
