19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The units of the van der Waal’s constant ‘b’ are
The units of the van der Waal’s constant ‘a’ are
Van der Waals constants ‘a’ and ‘b’ are related with..... respectively.
a and b are van der Waals constants for gases. Chlorine is more easily liquefied than ethane because
A gas will approach ideal behaviour at
In case of hydrogen and helium, the van der Waal’s forces are
Two separate bulbs contain ideal gases A and B. The density of gas A is twice that of gas B. The molecular mass of A is half that of gas B. The two gases are at the same temperature. The ratio of the pressure of A to …
Any gas shows maximum deviation from ideal gas at
For a gas deviation from ideal behaviour is maximum at :
The pressure of real gases is less than that of ideal gas because of
A gas is said to behave like an ideal gas when the relation PV/T = constant. When do you expect a real gas to behave like an ideal gas ?
The ratio of root mean square velocity to average velocity of a gas molecule at a particular temperature is
The average velocity of an ideal gas molecule at 27ºC is 0.3 m/s. The average velocity at 927º C will be
At constant volume, for a fixed number of moles of a gas the pressure of the gas increases with rise of temperature due to
The ratio between the root mean square speed of H2 at 50K and that of O2 at 800 K is
The r.m.s. velocity of hydrogen is 7 time the r.m.s. velocity of nitrogen. If T is the temperature of the gas,
The root mean square velocity of an ideal gas at constant pressure varies with density (d) as
For a monatomic gas kinetic energy = E. The relation with rms velocity is (a) 1/ 2 2E u m (b) 1 / 2 3E u 2m (c) 1 / 2 E u 2m (d) 1/ 2 E u 3m
Which one of the following statements is not true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?
The average speed at temperature TºC of CH4(g) is 88 × 103 ms–1. What is the value of T ?
At what temperature most probable speed of O2 molecules have the same value of root mean square speed of O2 molecules at 300 K ?
The ratio between the root mean square velocity of H2 at 50 K and that of O2 at 800 K is
The ratio of the root mean square velocity to average velocity of a gas molecule at a particular temperature is
Which of the following gases would have the highest R.M.S. velocity at 25ºC ?
According to kinetic theory of gases, the root mean square velocity is directly proportional to