The GATE Grind

GATE Physical Chemistry: Surfaces and Interfaces: Physisorption and chemisorption. Langmuir, Freundlich and Brunauer-Emmett-Teller (BET) isotherms. Surface catalysis: Langmuir-Hinshelwood mechanism. Surface tension, viscosity, Self- assembly/ physical chemistry of colloids, micelles and macromolecules. – Previous Year Questions

4 GATE previous year questions on Surfaces and Interfaces: Physisorption and chemisorption. Langmuir, Freundlich and Brunauer-Emmett-Teller (BET) isotherms. Surface catalysis: Langmuir-Hinshelwood mechanism. Surface tension, viscosity, Self- assembly/ physical chemistry of colloids, micelles and macromolecules. (Physical Chemistry, Chemistry) with answers and explanations, from every paper.

  1. GATE 2026 CY Q56 (2 marks, Multiple select) – The correct statement(s) for a surface catalyzed unimolecular gaseous reaction is(are)
  2. GATE 2026 CY Q64 (2 marks, Numerical answer) – BET nitrogen adsorption at 77 K on 1.0 g adsorbent gives slope 610-4 mm−3 and intercept 410-6 mm−3 for a plot of z/[(1-z)V] against z = p/p0. The…
  3. GATE 2024 CY Q18 (1 mark, Multiple choice) – Critical micellar concentration of a surfactant is 0.008 M in water at 25 °C. If the aggregation number of the micelles is 80, the concentration of…
  4. GATE 2024 CY Q29 (1 mark, Multiple select) – The non-dissociative adsorption of a gas on a given surface at a fixed temperature follows Langmuir isotherm. The plot(s) which give(s) a straight…