Gaseous State

The correct option in which the density of argon (Atomic mass = 40) is highest:

The correct van der Waals equation for 1 mole of a real gas is :

Which amongst the following options is correct graphical representation of Boyle's law?

Four gas cylinders containing He, N2, CO2 and NH3 gases separately are gradually cooled from a temperature of 500 K. Which gas will liquify first?
(Given Tc in K \(-\) He : 5.3, N2 : 126, CO2 : 304.1 and NH3 : 405.5)

A 10.0 L flask contains 64 g of oxygen at 27\(^\circ\)C. (Assume O2 gas is behaving ideally). The pressure inside the flask in bar is (Given R = 0.0831 L bar K\(-\)1 mol\(-\)1)

Which one is not correct mathematical equation for Dalton's Law of partial pressure? Here p = total pressure of gaseous mixture
where pi = partial pressure of ith gas
\({\chi _i}\) = mole fraction of ith gas in gaseous mixture where $${\chi...

Choose the correct option for the total pressure (in atm.) in a mixture of 4g O2 and 2g H2 confined in a total volume of one litre at 0\(^\circ\)C is :[Given R = 0.082 L atm mol\(-\)1K\(-\)1, T = 273 K]

Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures :

A mixture of N2 and Ar gases in a cylinder contains 7g of N2 and 8g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is :[Use atomic masses (in g mol\(-\)1) : N = 14, Ar = 40]

A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same
conditions. The correct option about the gas and its compressibility factor (Z) is -

Given van der Waals’ constant for NH3
, H2,
O2
and CO2
are respectively 4.17, 0.244, 1.36
and 3.59, which one of the following gases is
most easily liquefied?

The correction factor ‘a’ to the ideal gas
equation corresponds to

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for onehalf of the hydrogen to escape?

A gas such as carbon monoxide would be most likely to obey the ideal gas law at

What is the density of N2 gas 227oC and 5.00 atm. pressure? (R = 0.082 L atm K\(-\)1 mol\(-\)1)

Maximum deviation from ideal gas is expected from

50 mL of each gas A and of gas B takes 150 and 200 seconds respectively for effusing through a pin hole under the similar conditions. If molecular mass of gas B is 36, the molecular mass of gass A will be

A certain gas takes three times as long to effuse out as helium. Its molecular mass will be

For real gases van der Waals equation is written as \(\left( {p + {{a{n^2}} \over {{V^2}}}} \right)\) (V \(-\) nb) = n RT
where \(a\) and \(b\) are van der Waals constants. Two sets of gases are
(I)  O2, CO2, H2 and He
(II)  CH4. O2 and...

Equal volumes of two monoatomic gases, A and B at same temperature and pressure are mixed. The ratio of specific heats (Cp/Cv) of the mixture will be

A gaseous mixture was prepared by taking equal mole of CO and N2. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N2) in the mixture is

By what factor does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled ?

In Duma's method of estimation of nitrogen 0.35 g of an organic compound gave 55 mLof nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (aqueous tension at 300 K = 1...

Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molecular mass of A is 49 u. Molecular mass of B will be

A bubble of air is underwater at temperature 15oC and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is 25oC and the pressure is 1.0 bar, what will happen to the volume of the bubble?

The pressure exerted by 6.0 g of methane gas in a 0.03 m3 vessel at 129oC is (Atomic masses : C = 12.01, H = 1.01 and R = 8.314 J K\(-\)1 mol\(-\)1 )

The energy absorbed by each molecule (A2) of a substance is 4.4 \(\times\) 10\(-\)19 J and bond energy per molecule is 4.0 \(\times\) 10\(-\)19 J. The kinetic energy of the molecule per atom will be

Volume occupied by one molecule of water (density = 1 g cm\(-\)3) is

If a gas expands at constant temperature, it indicates that

In Haber process 30 litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50% of the expected product. What will be the composition of gaseous mixture underthe aforesaid condition in the end ?

Van der Waal's real gas, acts as an ideal gas, at which conditions?

The beans are cooked earlier in pressure cooker because

Which of the following expressions correctly
represents the relationship between the average
molar kinetic energy, KE, of CO and N2 molecules
at the same temperature ?