According to the kinetic theory of gases, in an ideal gas, between two successive collisions a gas molecule travels
in a circular path
in a wavy path
in a straight line path
with an accelerated velocity
For a mono atomic gas kinetic energy = B. The relation with rms velocity is
The given graph represents the variation of z (compressibility factor = ) versus p, for three real gases A, B and C. Identify the only incorrect statement.
For the gas A, a = 0 and its dependence on P is linear at all pressures
For the gas B, b = 0 and its dependence on P is linear at all temperatures
For the gas C, which is typical real gas for which neither a = 0 nor b = 0, by knowing the minima and the point of intersection, with Z = 1, a and b can be calculated
At high pressure, the slope is positive for all real gases
Which is not true in case of ideal gas?
It can not be converted into a liquid
There is no interaction between the molecules
All molecules of the gas move with same speed
At a given temperature, PV is proportional to the amount of gas.
Which of the following gives the correct relation between internal energy and pressure of a gas per unit volume ?
P= 2/3 E
P= 3/2E
P=1/2 E
P= 2E
A balloon blown up with 1 mole of gas has a volume of 480 mL at 5ºC. The balloon is filled to 7/8th of its maximum capacity. Will the balloon burst at 30ºC?
Balloon will burst
Balloon will not burst
Bursting of balloon is independent of temperature
Cannot be predicted
If 10-4 dm3 of water is introduced into a 1.0 dm3 flask at 300 K, how many moles of water are in the vapour phase when equilibrium is established?
[ Given, vapour pressure of H2O at 300 K is 3170 Pa; R = 8.314 JK-1 mol-1 ]
5.56 x 10-3 mol
1.53 x 10-2 mol
4.46 x 10-2 mol
1.27 x 10-3 mol
The first order diffraction of X-rays from a certain set of crystal planes occur at an angle of 11.8º from the planes. If the planes are 0.281 nm apart, what is the wavelength of X-rays?
0.281 nm
0.2044 nm
0.1149 nm
0.1180 nm
At which condition, van der Waals real gas act as an ideal gas ?
High temperature, low pressure
Low temperature, high pressure
High temperature, high pressure
Low temperature, low pressure
As the temperature is raised from 20ºC to 40ºC, the average kinetic energy of neon atoms changes by a factor of which of the following?
2
