The components of liquid air can be separated by fractional distillation.
Air is a homogeneous mixture of different gases like Oxygen ,Nitrogen and Argon which can be separated using fractional distillation.
Fractional distillation: It is a technique for separation of a mixture of two miscible liquids which have comparable boiling points i.e., the difference between their boiling points is less than where K= Kelvin.
Hence, the given statement is true.