Can a gas with a = 0 be liquefied?

A gas can be liquefied

The gas which can be liquefied under high pressure at 4^(@)C is

An ideal gas can never be liquefied because .

Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure . While sharing her experience with friends she got confused . Help her to identify the correct set of conditions.

The table indicates the value of vander Waal's constant a in L^(2) atm mol^(-2) . The gas which can most easily be liquefied is ?

Assertion: Noble gases can be liquefied. Reason: Attractive forces can exist between nonpolar molecules.

Assertion: Noble gases can be liquefied. Reason: Attractive forces can exist between nonpolar molecules.

The essential conditions for liquefaction of gases were discovered by Andrews in 1869 as a result of his study of pressure-volume-temperature relationship for CO_(2) . It was found that above a certain temperature, it was impossible to liquefy a gas whatever the pressure was applied. The temperature below which the gas can be liquefied by the application of pressure alone is called critical temperature (Tc). The pressure required to liquefy a gas at this temperature is called the critical pressure (Pc). The volume occupied by one mole of the substance at the critical temperature and pressure is called critical volume. Critical constants are related with van der waals' constant as follows: V_( c) = 3b, P_( c) =a/(27b^(2)), T_( c) =(8a)/(27 Rb) The values of critical volumes of four gases A, B, C and D are 0.025L, 0.312L, 0.245L and 0.432L respectively. The gas with larger molecular diameter will be :

Critical temperatures for A, B, C and D gases are 25^(@)C, 10^(@)C, -80^(@)C and 15^(@)C respectively. Which gas will be liquefied more easily ?

An ideal gas obeying the kinetic theory of gases can be liquefied if