$A$ helium molecule is two times heavier than a hydrogen molecule at $298 \ K$. According to the kinetic theory,the average kinetic energy of helium at $298 \ K$ is

Give two unfair assumptions of the Kinetic Molecular Theory of gases. Justify them.

$A$ $20 \ dm^3$ volume of $SO_2$ diffuses through a porous partition in $20 \ s$. What volume of $O_2$ gas in $dm^3$ will diffuse under the same conditions in $30 \ s$?

According to the kinetic molecular theory of gases,which of the following statements are correct?
$a$) The actual volume of the molecules is negligible in comparison to the empty space between them.
$b$) Collisions of gas molecules are inelastic.
$c$) At any particular time,different particles in the gas have the same speed and same kinetic energies.
$d$) Pressure is exerted by the gas as a result of the collision of the particles with the walls of the container.

One mole of oxygen at $273 \ K$ and one mole of sulphur dioxide at $546 \ K$ are taken in two separate containers,then:

At what temperature $T$ will the kinetic energy of $0.3 \ mol$ of $He$ be equal to the kinetic energy of $0.4 \ mol$ of $Ar$ at $400 \ K$ (in $K$)?