19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Pressure of a gas is due to
The kinetic energy for 14 grams of nitrogen gas at 127ºC is nearly (mol. mass of nitrogen = 28 and gas constant = 8.31 JK–1 mol–1)
The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends on
Which one of the following is not a correct postulate of kinetic theory of gases ?
At what temperature will the molar KE of 0.3 mol of He be the same as that of 0.4 mol of argon at 400 K ?
Consider three one-litre flasks labeled A, B and C filled with the gases NO, NO2, and N2O, respectively, each at STP. In which flask do the molecules have the highest average kinetic energy?
If a gas expands at constant temperature, it indicates that
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 ?
According to the kinetic theory of gases, in an ideal gas, between two successive collisions a gas molecule travels
Based on kinetic theory of gases following laws can be proved
According to kinetic theory of gases, for a diatomic molecule
Helium atom is two times heavier than a hydrogen molecule .At 298 K, the average kinetic energy of a helium atom is
Which is not true in case of an ideal gas ?
The rms speed of N2 Molecules in a gas sample can be changed by
By which factor does the root mean square velocity of a gaseous molecule increases, when the temperature is increase from 273 K to 1092 K.
Root mean square velocity of a gas molecule is proportional to
The ratio among most probable velocity, mean velocity and root mean square velocity is given by
The root mean square speeds at STP for the gases H2, N2, O2 and HBr are in the order :
The temperature of the gas is raised from 27ºC to 927ºC, the root mean square velocity is (a) 927 / 27 times the earlier value
According to kinetic theory of gases, the root mean square velocity is directly proportional to
Which of the following gases would have the highest R.M.S. velocity at 25ºC ?
The ratio of the root mean square velocity to average velocity of a gas molecule at a particular temperature is
The ratio between the root mean square velocity of H2 at 50 K and that of O2 at 800 K is
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 average speed at temperature TºC of CH4(g) is 88 × 103 ms–1. What is the value of T ?