JEE Main · 2021 · 31 Aug 2021 · Shift 1 · States of Matter

At the sea level, the dry air mass percentage composition is given as nitrogen gas : 70.0 , oxygen gas : 27.0 and argon gas : 3.0. If total pressure is 1.15 atm , then calculate the ratio of followings respectively :

(i) partial pressure of nitrogen gas to partial pressure of ox …

Arrange the following gases in increasing order of van der Waals constant 'a'
A. Ar
B. ${\mathrm{CH}}_4$
C. ${\mathrm{H}}_2\mathrm{O}$
D. ${\mathrm{C}}_6{\mathrm{H}}_6$

Choose the correct option from the following :-

Three bulbs are filled with $\mathrm{CH}{}_4$, $\mathrm{CO}{}_2$ and Ne as shown in the picture. The bulbs are connected through pipes of zero volume. When the stopcocks are opened and the temperature is kept constant throughout, the pressure of the system is found to be ______ atm. (Nearest i …

At constant temperature a gas is at a pressure of 940.3 mm Hg. The pressure at which its volume decreases by 40% is ____ mm Hg.
(Nearest Integer)

At 600 K, the root mean square (rms) speed of gas X (molar mass $=40$) is equal to the most probable speed of gas $Y$ at 90 K. The molar mass of the gas Y is ______ ${\mathrm{g}\mathrm{mol}}^{-1}$. (Nearest integer)

A certain quantity of real gas occupies a volume of $0.15{\mathrm{dm}}^3$ at 100 atm and 500 K when its compressibility factor is 1.07. Its volume at 300 atm and 300 K (When its compressibility factor is 1.4) is $\_\_\_\_$ $\times 10^{-4}{\mathrm{dm}}^3$ (Nearest integer)