$A$ container contains equal masses of $H_2$,$He$,$CO_2$ and $Ne$ at a certain temperature. Which of the following gas exerts maximum partial pressure?

The ratio of densities of two gases is $1:16$. What will be the ratio of their rates of diffusion?

Gas $X$ diffuses three times faster than gas $Y$. What is the ratio of their densities,i.e.,$D_x : D_y$?

$A$ gaseous mixture was prepared by taking equal moles of $CO$ and $N_2$. If the total pressure of the mixture was found to be $1 \ atm$,the partial pressure of the nitrogen $(N_2)$ in the mixture is $...$ $atm$.

Fill in the blanks:
$(1)$ The forces of attraction and repulsion between molecules and atoms are called ....... .
$(2)$ The attractive intermolecular forces between molecules of a substance are also known as .............. .
$(3)$ London forces are also known by the name of ........... .
$(4)$ The mathematical form of Charles's Law is ........ .

The rate of diffusion of a gas is proportional to