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GATE Process Calculations: Recycle, bypass and purge calculations – Previous Year Questions

5 GATE previous year questions on Recycle, bypass and purge calculations (Process Calculations, Chemical Engineering) with answers and explanations, from every paper.

  1. GATE 2022 CH Q50 (2 marks, Numerical answer) – Consider the process flowsheet in the figure. An irreversible liquid-phase reaction A B (reaction rate -r A = 164x A kmol m-3 h-1) occurs in a 1 m3…
  2. GATE 2022 CH Q62 (2 marks, Numerical answer) – Consider the process in the figure. The liquid phase elementary reactions A + B P, -r B1 = k 1x Ax B P + B S, -r B2 = k 2x Px B S + A 2P, -r S3 = k 3x…
  3. GATE 2024 CH Q54 (2 marks, Numerical answer) – Consider the process in the figure for manufacturing B. The feed to the process is 90 mol% A and a close-boiling inert component I. At a particular…
  4. GATE 2026 CH Q19 (1 mark, Multiple choice) – For an irreversible reaction containing inerts in the feed, single-pass conversion in a reactor is 70%. Which one of the following statements is…
  5. GATE 2026 CH Q64 (2 marks, Numerical answer) – Cyclohexane (C 6H 12) is produced from benzene (C 6H 6) and hydrogen (H 2) according to the following reaction. C 6H 6 + 3H 2 ⟶ C 6H 12 Consider the…