Question

During the separation of CO${}_2$ and O${}_2$ by the process of preferential liquefaction, the component_______liquefies.

Answer 1

preferential liquefaction is a process used to separate different compounds of air mixture.As the critical temperature of $C{O}_2$ is high compared to critical temperature of $O_2$.$C{O}_2$ is liquifie first.Higher the critical temperature,higher the ability to liquity.