The GATE Grind

GATE Chemical Reaction Engineering: Non-ideal reactors and residence time distribution – Previous Year Questions

6 GATE previous year questions on Non-ideal reactors and residence time distribution (Chemical Reaction Engineering, Chemical Engineering) with answers and explanations, from every paper.

  1. GATE 2022 CH Q65 (2 marks, Numerical answer) – An elementary irreversible liquid-phase reaction, 2P k Q, where the rate constant k = 2 L mol-1 min-1, takes place in an isothermal non-ideal reactor.…
  2. GATE 2023 CH Q60 (2 marks, Numerical answer) – An irreversible liquid-phase second-order reaction A k B with rate constant k = 0.2 liter mol-1min-1, is carried out in an isothermal non-ideal…
  3. GATE 2024 CH Q46 (2 marks, Multiple choice) – The residence time distribution, E, for a non-ideal flow reactor is given in the figure. A first-order liquid phase reaction with a rate constant 0.2…
  4. GATE 2025 CH Q23 (1 mark, Multiple choice) – Choose the CORRECT statement that describes the dependence of the variance ( 2) of the residence time distribution (RTD) with respect to the number of…
  5. GATE 2025 CH Q35 (1 mark, Numerical answer) – The residence-time distribution (RTD) function of a reactor (in min-1) is E(t) = cases 1 - 2t, & t 0.5 min \\ 0, & t > 0.5 min cases The mean…
  6. GATE 2026 CH Q56 (2 marks, Numerical answer) – A first-order homogeneous liquid-phase reaction (A→B) occurs in a non-ideal isothermal reactor operating at steady state. The variance (2) of…