Question

Light non-keys end up as a

(a) Final product

(b) Feed outlet

(c) Bottom end product

(d) Overhead product

I had been asked this question during an interview.

My doubt is from Minimum Reflux for System Containing Distributed Monkeys topic in chapter Column Process Design, Optimization and Shortcut Calculations of Distillation Design

Answer 1

Correct option is (d) Overhead product

For explanation I would say: Light non-keys always end up as an overhead product, while heavy keys at bottom product of the column.