NEET Questions

Equal masses of oxygen and ozone are present in a container at 298 K. The ratio of their partial pressures ($P_{O_2} : P_{O_3}$) is:

A mixture of 1 mol of He and 0.5 mol of SO2 is held in a container at a constant temperature of 27°C. The partial pressure of He is 2 atm. If the mixture behaves ideally, what is the density of the mixture (g/L) closest to? (Given: R = 0.082 L atm/mol K, Molar mass of He = 4 g/mol, Molar mass of SO2 = 64 g/mol)

A container holds 4 g of helium at a pressure of 2 atm and a temperature of 300 K. If 8 g of oxygen is added to the container while maintaining the same volume and temperature, what is the new total pressure?

A mixture of 2 moles of He and 3 moles of $N_2$ is present in a closed container of volume 5 L at 27°C. What is the total pressure exerted by the mixture?

A mixture of $N_2$ and $O_2$ gases has a total pressure of 1.2 atm. If the partial pressure of $N_2$ is 0.8 atm and the volume of the container is halved while maintaining a constant temperature, what will be the new partial pressure of $O_2$?

Two flasks, A and B, of equal volume are connected by a narrow tube of negligible volume. Flask A contains $CO_2$ at 1 atm, while flask B contains $N_2$ at 2 atm. If the stopcock connecting the flasks is opened, and the gases are allowed to mix at constant temperature, what is the partial pressure of $CO_2$ in the final mixture?

A mixture of gases contains 4 moles of $O_2$, 2 moles of $N_2$, and 1 mole of $CO_2$ at a total pressure of 2 atm. What is the mole fraction of $N_2$ and its partial pressure?

A container holds a mixture of $He$ and $Ne$ gases. The partial pressure of $He$ is 0.3 atm, and its mole fraction is 0.6. If 0.2 moles of $Ar$ is added to the mixture while keeping the temperature and volume constant, what will be the total pressure of the resulting mixture?

A sealed container with a volume of 1 L contains a mixture of $O_2$ and $N_2$ at a total pressure of 2 atm and 27°C. The mole fraction of $O_2$ is 0.4. If the temperature is increased to 127°C, what will be the new partial pressure of $O_2$?

10g each of $He$, $Ne$, and $Ar$ are mixed in a container of volume 'V' at 27°C. What is the total pressure exerted by the mixture? (Assume ideal gas behavior. Atomic masses: $He$=4, $Ne$=20, $Ar$=40, R= 0.0821 L atm/mol K)