The GATE Grind

GATE Chemical Reaction Engineering: Heterogeneous catalysis, diffusion effects and catalyst deactivation – Previous Year Questions

8 GATE previous year questions on Heterogeneous catalysis, diffusion effects and catalyst deactivation (Chemical Reaction Engineering, Chemical Engineering) with answers and explanations, from every paper.

  1. GATE 2022 CH Q26 (1 mark, Multiple choice) – The reaction A B is carried out isothermally on a porous catalyst. The intrinsic reaction rate is kC A2, where k is the rate constant and C A is the…
  2. GATE 2023 CH Q43 (2 marks, Multiple choice) – CO and H 2 participate in a catalytic reaction. The partial pressures (in atm) of the reacting species CO and H 2 in the feed stream are p CO and p H…
  3. GATE 2023 CH Q58 (2 marks, Numerical answer) – Fresh catalyst is loaded into a reactor before the start of the following catalytic reaction. A products The catalyst gets deactivated over time. The…
  4. GATE 2024 CH Q44 (2 marks, Multiple choice) – A first-order heterogenous reaction A B is carried out using a porous spherical catalyst. Assume isothermal conditions, and that intraphase diffusion…
  5. GATE 2025 CH Q20 (1 mark, Multiple choice) – Choose the CORRECT ordering of the diameter d of the different types of pores in a solid catalyst.
  6. GATE 2025 CH Q29 (1 mark, Multiple choice) – Choose the option that correctly matches the items in Group 1 with those in Group 2. Group 1 Group 2 --- --- (P) Coking (I) Prolonged exposure of…
  7. GATE 2025 CH Q59 (2 marks, Numerical answer) – The catalytic gas phase reaction A products is carried out in an isothermal batch reactor of 10 L volume using 0.1 kg of a solid catalyst. The…
  8. GATE 2026 CH Q17 (1 mark, Multiple choice) – An irreversible chemical reaction occurs on a porous catalyst. All the pores are of same size. In strong pore diffusion regime, the observed…