Question

For an infinite number of plates required, the desired separation

(a) Hardly possible

(b) Finely possible

(c) Can’t be specified

(d) Assumable

The question was asked by my school principal while I was bunking the class.

The origin of the question is Computer Simulation Result Analysis topic in chapter Key Fractionation Concepts of Distillation Design

Answer 1

Correct answer is (a) Hardly possible

To explain: At infinite plates for reflux ratio, the desired separation is just barely possible, while for fixed number of trays the separation can be assumed.