Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format. 16-CHEM-A2, Unit Operations and Separation Processes — May 2018, 3-hour open-book exam. Six 25-point problems: Part A (Unit Operations) — A1 filter-cake washing, A2 pipe flow & pump power, A3 free-settling of a particle; Part B (Separation Processes) — B1 packed-tower flooding/diameter, B2 adsorption isotherms, B3 multistage liquid–liquid extraction. The rubric asks for two problems per part; all six are worked in full below.
Reference texts (subject). McCabe, Smith & Harriott, Unit Operations of Chemical Engineering (7th ed.); Geankoplis, Transport Processes and Separation Process Principles (4th ed.); Treybal, Mass-Transfer Operations (3rd ed.); Perry's Chemical Engineers' Handbook (§6 fluid & particle mechanics, §14 packed towers, §15 extraction, §16 adsorption).