Question

Which of the following operations is carried out by extraction equipment?

(a) Leaving as little solvent as possible in the spent cake

(b) Bringing intimate contact between solute and solvent

(c) Leaching solute out as quick as possible by letting solute diffuse into the solvent from porous structure of solids

(d) All of the mentioned

I had been asked this question in exam.

I want to ask this question from Unit Operations topic in chapter Equilibrium Stage Operations, Unit Operations – Extraction, Crystallization and Filteration of Food Engineering

Answer 1

The correct answer is (d) All of the mentioned

For explanation: Leaving as little solvent as possible in the spent cake i.e. the solids, bringing intimate contact between solute and solvent and leaching solute out as quick as possible by letting solute diffuse into the solvent from porous structure of solids are all operations carried out by extraction equipment.