Question

What are the classifications of extraction equipment?

(a) By gravity

(b) By centrifugal forces

(c) By centrifugal forces and size of the particle

(d) By centrifugal forces and gravity

This question was posed to me during an interview.

The question is from Contact Equilibrium Separation Process in section Contact Equilibrium Separation Process of Food Processing Unit Operations

Answer 1

Correct answer is (d) By centrifugal forces and gravity

Easy explanation: Classification of extraction equipment is based on centrifugal forces and gravity, the methods used for bringing together and separating the phases and is sub-classified according to type of contact.