1.

When rectified spirit and benzene are distilled together, the first fraction obtained is

Answer»

A ternary azeotrope
Absolute alcohol
A binary azeotrope
Denatured spirit

Solution :Azeotropic distillation METHOD -Rectified `UNDERSET(darr "Fractional distillation")("spirit")`+BENZENE + water
First FRACTION at 331.8 K is ternary azeotrope (`H_(2)O 7.4% ` + Benzene 74% + alcohol 32.2 %)
Second fraction 341.2 K is a binary azeotrope(Benzene 67.7% + Alcohol 32.2%)
Last fraction at 351 K is absolute alcohol


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