19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
If some moles of O2 diffuse in 18 sec and same moles of other gas diffuse in 45 sec then what is the molecular weight of the unknown gas? (a) 18 x (b) 45 x (c) x (d) x
Which of the following gas will have highest rate of diffusion?
The relative rate of diffusion of helium w.r.t. methane under similar conditions of pressure and temperature is
The rate of diffusion of methane at a given temperature is twice that of a gas X. The molecular weight of X is
A certain gas effuses through a small opening of a vessel at a rate which is exactly one-fifth the rate at which helium does the same. Thus, the molecular weight of the gas is
In a closed room of 1000 m3, a perfume bottle is opened up. The whole room develops smell. This is due to which property of gases ?
A bottle of ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends, the white ammonium chloride ring first formed will be
If helium and methane are allowed to diffuse out of the container under the similar conditions of temperature and pressure, then the ratio of rate of diffusion of helium to methane is
When T, P, and M represent rate of diffusion pressure and molecules mass, respectively, the ratio of the rate of diffusion / A B T T of two gases A and B, is given as
The rate of diffusion of methane at a given temperature is thrice that of a gas X. The molecular weight of X is
A bottle of dry ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends, the white ammonium chloride ring first formed will be :
Rate of diffusion of a gas is
The theory that attempts to elucidate the behavior of gases is known as …I… of gases. Here, I refer to
The kinetic molecular theory of gases explains the behavior of gases at
Gases expand and occupy all the space available to them. Which of the following assumption explain this behavior correctly?
The shape of gases is not fixed because I. Collisions of gas molecules are perfectly elastic. II. Particles of a gas are always in constant and random motion. III. Gases are highly compressible. Choose the correct opt…
According to kinetic theory of gases, I. Collision are always elastic. II. Heavier molecules transfer more momentum to the wall of container. III. Only a small number of molecules have very high velocity. IV. Between …
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 ?