Azeotropes are constant boiling mixture which has same composition in liquid phase as well as in vapour phase.
The non ideal solutions which exhibit negative deviation from ideal solution at a particular composition are called as maximum boiling azeotropes.
e.g 68% aqueous solution of HNO3 or any other suitable example.
The non ideal solutions which exhibit positive deviation from ideal solution at a particular composition are called as minimum boiling azeotropes.
e.g 95% aqueous ethanol by volume or any other suitable example.
