Question

Statement 1: Multi-stage cross-current extraction – the solids contain some amount of solute after every extraction.

Statement 2: Single-stage batch extractor – Used in labs and not on large scale as a solvent is continuously subjected to heat.

(a) True, False

(b) True, True

(c) False, False

(d) False, True

I got this question in an online interview.

The doubt is from Unit Operations topic in chapter Equilibrium Stage Operations, Unit Operations – Extraction, Crystallization and Filteration of Food Engineering

Answer 1

The correct choice is (c) False, False

For explanation I would say: Single-stage batch extractor – the solids contain some amount of solute after every extraction. Multi-stage cross-current extraction – Used in labs and not on large scale as a solvent is continuously subjected to heat.