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Chemistry - Surface Chemistry

Practise 36 KCET previous year questions on Surface Chemistry, compiled from papers spanning 2007 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty KCET tests.

Surface Chemistry has been asked in 18 of the 20 years of KCET papers analysed (2007–2026), with 36 questions in all. 69% of them were easy, 28% moderate and 3% tough. Most of its questions came from 2024, with 4 questions that year. In the last three years (2024–2026) it had 4 questions across 3 papers, about 1.3 per paper.

The chapter's 6 topics are not weighted equally: Colloids (9 questions, 25%), Properties of colloidal solution (7 questions, 19%), and Adsorption (7 questions, 19%) have been asked the most. Over the last five years the most frequent topics have been Properties of colloidal solution (3), Colloids (1), and Adsorption (1). Properties of colloidal solution has produced the most tough questions (1).

  1. 1Which one of the following is a cationic detergent?2024Preparation and Purification of colloids
  2. 2Identify the incorrect statement2024Properties of colloidal solution
  3. 3For the coagulations of positively charged hydrated ferric - oxide sol, the flocculating power of the ions is in the order:2024Properties of colloidal solution
  4. 4Gold sol is not a2024Colloids
  5. 5Aqueous solution of raw sugar when passed over beds of animal charcoal, it becomes colourless. Pick the correct set of terminologies that ca2023Adsorption
  6. 6For Freundlich adsorption isotherm, a graph of vs gives a straight line. The slope of line and its -axis intercept respectively are2023Adsorption isotherms
  7. 7Colloidal solution commonly used in the treatment of skin disease is2022Properties of colloidal solution
  8. 8Which can adsorb larger volume of hydrogen gas?2022Catalysis and Theories of Catalysis
  9. 9A colloidal solution is subjected to an electric field than colloidal particles more towards anode. The amount of electrolytes of and requir2021Colloids
  10. 10Zeta potential is2021Properties of colloidal solution
  11. 11A sol of is prepared by mixing equal volumes of and , which of the following statement is correct?2020Adsorption
  12. 12During adsorption of a gas on a solid at low temperature2020Adsorption
  13. 13Which of the following is an example of homogeneous catalysis?2019Catalysis and Theories of Catalysis
  14. 14Critical Micelle concentration for a soap solution is \( 1.5 10^{-4} {~mol} L^{-1} \). Micelle formation is possible only when the concentra2019Preparation and Purification of colloids
  15. 15Which of the following electrolytes will have maximum coagulating value for \( {Agl} / {Ag}^{+} {sol} \) ?2018Colloids
  16. 16Gold sol is not a2018Colloids
  17. 17Which of the following statement is incorrect?2017Colloids
  18. 18Which of the following is not a favourable condition for physical adsorption ?2017Adsorption
  19. 19Gabriel phthalimide synthesis is used in thepreparation of primary amine fromphthalimide, which of the following reagent isnot used during t2017Catalysis and Theories of Catalysis
  20. 20Which of the following statements is incorrect w.r.t. Physisorption ?2016Adsorption
  21. 21Reactions in Zeolite catalyst depend on,2016Catalysis and Theories of Catalysis
  22. 22Which of the following curve is in accordance with Freundlich adsorption isotherm?2015Adsorption isotherms
  23. 23Which of the following colloids cannot be easily coagulated?2015Colloids
  24. 24The correct sequence of reactions to be performed to convert benzene into m-bromoaniline is2014Colloids
  25. 25Conductivity of a saturated solution of a sparingly soluble salt \( A B \) at \( 298 K \) is \( 1.85 10^{-5} {Sm}^{-1} \). Solubility produc2014Adsorption isotherms
  26. 26Adsorption theory is applicable for2013Catalysis and Theories of Catalysis
  27. 27The stability of a lyophobic colloid is due to2013Colloids
  28. 28Which of the following cations will have minimum flocculation value for arsenic sulphide sol?2013Properties of colloidal solution
  29. 29Dialysis can be used to separate2012Preparation and Purification of colloids
  30. 30of silver gets distributed between of molten zinc and of molten lead at . The percentage of silver still left in the lead layer is approxima2011Adsorption isotherms
  31. 31Which one of the following does not involve coagulation?2011Properties of colloidal solution
  32. 32During the adsorption of krypton on activated charcoal at low temperature2010Adsorption
  33. 33Which one of the following does not involve coagulation?2010Preparation and Purification of colloids
  34. 34Rate of physical adsorption increases with2009Adsorption
  35. 35The colour of sky is due to2008Properties of colloidal solution
  36. 36When a sulphur sol is evaporated sulphur is obtained. On mixing with water sulphur sol is not formed. The sol is2007Colloids

Frequently Asked Questions

1.How many questions are available for Surface Chemistry?

This chapter includes 36 questions compiled from KCET papers spanning 2007 to 2024.

2.Are these questions only from KCET, or from other exams too?

These are KCET 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 KCET Chemistry?

Surface Chemistry has appeared in 18 of the 20 years of KCET papers covered here, with 36 questions across 18 papers - about 2 per paper it appears in.

4.What is the difficulty level of Surface Chemistry questions in KCET?

Of the 36 questions analysed for this chapter, 69% are easy, 28% moderate and 3% tough. 2024 had the most, with 4 questions.

5.Which topics in Surface Chemistry should I focus on?

These topics have carried the most weightage in Surface Chemistry:

  • Colloids - 9 questions (25%)
  • Properties of colloidal solution - 7 questions (19%)
  • Adsorption - 7 questions (19%)
  • Properties of colloidal solution has produced the most tough questions (1).
6.Is Surface Chemistry's weightage in KCET going up or down?

Across all 18 papers analysed, Surface Chemistry has averaged about 2.0 questions per paper. In the last three years (2024–2026), that average has fallen, at about 1.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.