More than one tie line is represented in an equilibrium triangular system is known as
(a) Single stage extractor
(b) Multistage extractor
(c) Single stage cascades
(d) None of the mentioned
This question was posed to me in examination.
My enquiry is from Design of Extractor for Multistage Stage Operations topic in portion Diffusion in Solids and Molecular Diffusion in Fluids of Mass Transfer