GATE Mass Transfer: Stage-wise and continuous contacting, stage efficiency, HTU and NTU – Previous Year Questions

3 GATE previous year questions on Stage-wise and continuous contacting, stage efficiency, HTU and NTU (Mass Transfer, Chemical Engineering) with answers and explanations, from every paper.

1. GATE 2023 CH Q34 (1 mark, Numerical answer) – A liquid L containing a dissolved gas S is stripped in a countercurrent operation using a pure carrier gas V. The liquid phase inlet and outlet mole…
2. GATE 2024 CH Q24 (1 mark, Multiple choice) – Which one of the given statements is correct with reference to gas-liquid contactors for mass transfer applications?
3. GATE 2024 CH Q65 (2 marks, Numerical answer) – Consider a tray-column of diameter 120 cm. Each downcomer has a cross-sectional area of 575 cm2. For a tray, the percentage column cross-sectional…