Fractional distillation|Azeotropes mixture

Azeotropic mixture:

The azeotropic mixture of water ( B.P. = 100^(@)C ) and HCl( B.P. =86^(@)C )boils at about 120^(@)C . During fractional distillation of this mixture it is possible to obtain :

Absolute alcohols ( 100% ethanol) are prepared from rectified spirit ( 95% ethanol) by mixing a suitable amount of …….. And subjected to fractional distillation (azeotropic distillation).

How many fractions will be obtained on fractional distillation of mixture of all dimethyl cyclopentance?

Azeotropic mixtures are