On a certain day,the humidity in the atmosphere is $1\%$. If the barometer reads $760 \ mm \ of \ Hg$,what will be the pressure of the dry gas in $mm \ of \ Hg$?

Which of the following gases is not easily soluble in water?

$A$ person living in $Shimla$ observed that cooking food without using a pressure cooker takes more time. The reason is that at high altitude:

Calculate the ratio of the effusion of $CO$ and $N_2$,when temperature and pressure gradients are held constant?

The total pressure of a mixture of non-reacting gases $X$ $(0.6 \ g)$ and $Y$ $(0.45 \ g)$ in a vessel is $740 \ mm$ of $Hg$. The partial pressure of the gas $X$ is $........ \ mm$ of $Hg$. (Nearest Integer) (Given: molar mass $X = 20 \ g \ mol^{-1}$ and $Y = 45 \ g \ mol^{-1}$)

If $H_2S$ and $NH_3$ gases are released simultaneously from a cylinder through a small hole,which gas will be detected first and why?