Chemistry - Surface Chemistry
Practise 16 JEE Advanced previous year questions on Surface Chemistry, compiled from papers spanning 2007 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Advanced tests.
Surface Chemistry has been asked in 15 of the 27 years of JEE Advanced papers analysed (2000–2026), with 16 questions in all. 44% of them were easy, 31% moderate and 25% tough. Most of its questions came from 2012, with 2 questions that year. In the last three years (2024–2026) it had 2 questions across 6 papers, about 0.3 per paper.
The chapter's 5 topics are not weighted equally: Colloids (6 questions, 38%), Adsorption (5 questions, 31%), and Properties of colloidal solution (2 questions, 13%) have been asked the most. Over the last five years the most frequent topics have been Adsorption isotherms (2), Colloids (1), and Adsorption (1). Adsorption has produced the most tough questions (2).
- 1At a given temperature, g of acetic acid in mL of water is shaken with g of charcoal and the pH of the resulting solution is . Assume, the a2026 (Paper 2)Adsorption isotherms
- 2Adsorption of phenol from its aqueous solution on to fly ash obeys Freundlich isotherm. At a given temperature, from and aqueous phenol solu2025 (Paper 2)Adsorption isotherms
- 3Consider the following statements related to colloids. (I) Lyophobic colloids are not formed by simple mixing of dispersed phase and dispers2023 (Paper 2)Colloids
- 4The correct option(s) related to adsorption processes is(are)2022 (Paper 1)Adsorption
- 5The correct statement s related to colloids is(are)2021 (Paper 1)Colloids
- 6Molar conductivity m of aqueous solution of sodium stearate, which behaves as a strong electrolyte, is recorded at varying concentration(c) 2019 (Paper 1)Preparation and Purification of colloids
- 7The correct statement(s) about surface properties is(are)2017 (Paper 2)Properties of colloidal solution
- 8The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of three different aqueous2016 (Paper 2)Colloids
- 9When O 2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O 2 . The TRUE statement(s) regarding this adsorption2015 (Paper 2)Adsorption
- 10Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25 o C. For this process, the correct statement is2013 (Paper 1)Adsorption
- 11Choose the correct reason(s) for the stability of the lyophobic colloidal particles.2012 (Paper 1)Colloids
- 12The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild2012 (Paper 2)Adsorption
- 13The correct statement(s) pertaining to the adsorption of a gas on a solid surface is(are)2011 (Paper 1)Adsorption
- 14Among the electrolytes and , the most effective coagulating agent for sol is2009 (Paper 1)Properties of colloidal solution
- 15Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient conditions is2008 (Paper 2)Colloids
- 16Statement I Micelles are formed by surfactant molecules above the critical micellar concentration (CMC). Statement II The conductivity of a 2007 (Paper 1)Colloids
Frequently Asked Questions
1.How many questions are available for Surface Chemistry?
This chapter includes 16 questions compiled from JEE Advanced papers spanning 2007 to 2026.
2.Are these questions only from JEE Advanced, or from other exams too?
These are JEE Advanced questions specifically for the Surface Chemistry chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Surface Chemistry an important chapter for JEE Advanced Chemistry?
Surface Chemistry has appeared in 15 of the 21 years of JEE Advanced papers covered here, with 16 questions across 16 papers - about one per paper it appears in.
4.What is the difficulty level of Surface Chemistry questions in JEE Advanced?
Of the 16 questions analysed for this chapter, 44% are easy, 31% moderate and 25% tough. 2012 had the most, with 2 questions.
5.Which topics in Surface Chemistry should I focus on?
These topics have carried the most weightage in Surface Chemistry:
- Colloids - 6 questions (38%)
- Adsorption - 5 questions (31%)
- Properties of colloidal solution - 2 questions (13%)
- Adsorption has produced the most tough questions (2).
6.Is Surface Chemistry's weightage in JEE Advanced going up or down?
Across all 16 papers analysed, Surface Chemistry has averaged about 1.0 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.