GATE Transport Phenomena and Rate Processes: Chemical and electrochemical kinetics – Previous Year Questions

5 GATE previous year questions on Chemical and electrochemical kinetics (Transport Phenomena and Rate Processes, Metallurgical Engineering) with answers and explanations, from every paper.

1. GATE 2021 MT Q21 (1 mark, Multiple choice) – For a zero-order chemical reaction, which statement is FALSE?
2. GATE 2023 MT Q34 (1 mark, Numerical answer) – A reaction’s rate constant at 400 K is three times that at 300 K. Its activation energy is kJ mol-1 (one decimal place). Given: R=8.314 J mol-1 K-1.
3. GATE 2024 MT Q58 (2 marks, Numerical answer) – A nonporous spherical Fe 2O 3 particle of initial radius 510-2 m is topochemically reduced by H 2. The sharp reactant–product interface remains…
4. GATE 2025 MT Q56 (2 marks, Numerical answer) – Copper is electrodeposited from a CuSO 4 bath onto a stainless-steel cathode of total surface area 2 m2. The current density is 200 A m-2 and current…
5. GATE 2025 MT Q63 (2 marks, Numerical answer) – The reaction A B follows first-order kinetics. At a given temperature, 20% conversion occurs in 223 s. The time to reach 50% conversion at the same…