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 kinetic energy of one gm - molecule of a gas at normal temperature and pressure is (R = 8.31 J mol-1 K-1 )
0.56 x 104 J
1.3 x 102 J
2.7 x 103 J
3.4 x 103 J
Identify the correct relation for the slope at any point on the curve in PV graph for a gas ?
Gas exerts pressure on the walls of the container because:
Gas has weight
Gas molecules have momentum
Gas molecules collide with each other
Gas molecules collide with the walls of the container
If for a gas , this gas is made with which type of molecules ?
Diatomic
Mixture of diatomic and polyatomic
Monoatomic
Polyatomic
The ratio of the vapour densities of two gases at a given temperature is 9:8. The ratio of the rms velocities of their molecules is:
9:8
8:9
When the temperature of a gas filled in a closed vessel is increased by 1o C, its pressure increases by 0.4 %. The initial temperature of the gas was
25o C
250 K
250o C
25 K
The degree of freedom of a triatomic gas is:
1
2
6
8
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
The gas having an average speed four times as that of SO2 (molecular mass 64) is:
He (molecular mass 64)
O2 (molecular mass 4)
H2 (molecular mass 32)
CH4 (molecular mass 16)
