Can the efficiency of a plate in the distillation tower be greater than 100%?

Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysteresis. In such cases, the desorption equilibrium pressure is ________ that obtained for adsorption?

A bolometer is ________?

Preheating of combustion air is done to ________?

Terminal velocity is________?

Separation of two volatile liquids by distillation makes use of their________?