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Chemistry - Surface Chemistry

Practise 22 COMEDK previous year questions on Surface Chemistry, compiled from papers spanning 2012 to 2023. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty COMEDK tests.

Surface Chemistry has been asked in 11 of the 15 years of COMEDK papers analysed (2012–2026), with 22 questions in all. 59% of them were easy, 41% moderate and 0% tough. Most of its questions came from 2022, with 3 questions that year.

The chapter's 5 topics are not weighted equally: Adsorption (7 questions, 32%), Colloids (6 questions, 27%), and Properties of colloidal solution (6 questions, 27%) have been asked the most. Adsorption has also led over the last five years, with 3 questions.

  1. 1Which of the following is not true?2023 (Memory Based)Adsorption
  2. 2Which of the following is not true?2023 (Morning Shift)Adsorption
  3. 3The process of aggregation of colloidal particles into an insoluble precipitate by the addition of suitable electrolyte is called2022Properties of colloidal solution
  4. 4What is the function platelets?2022Properties of colloidal solution
  5. 5The correct condition for physical adsorption is2022Adsorption
  6. 6Which of the following colloids resemble to the true solutions?2021Colloids
  7. 7Which of the following conditions are favourable for chemisorption?2021Adsorption
  8. 8is an example for2020Catalysis and Theories of Catalysis
  9. 9When a sulphur sol is evaporated, sulphur is obtained. On mixing with water, sulphur sol is not formed. The sol is2020Colloids
  10. 10When common salt is added of a saturated solution of soap is precipitate(d)This is based on the principle of2019Colloids
  11. 11The adsorption of an inert gases on activated charcoal increase with2019Adsorption
  12. 12An example for auto-catalysis is2018Catalysis and Theories of Catalysis
  13. 13Which of the following electrolyte will have maximum flocculation value for sol??2018Properties of colloidal solution
  14. 14The colour of sky is due to2017Colloids
  15. 15The basic principle of Cottnell's precipitator is2017Properties of colloidal solution
  16. 16The diameter of colloidal particle ranges from2016Properties of colloidal solution
  17. 17Sulphur sol is a type of2015Colloids
  18. 18Which of the following is not a characteristic of chemisorption?2013Adsorption
  19. 19The concentration of electrolyte required to coagulate a given amount of sol is minimum in the case of2013Properties of colloidal solution
  20. 20Pick out the statement which is not relevant in the discussion of colloids2013Colloids
  21. 21Which of the following is not true for the adsorption of a gas on a solid?2012Adsorption
  22. 22Peptisation is a process in which2012Preparation and Purification of colloids

Frequently Asked Questions

1.How many questions are available for Surface Chemistry?

This chapter includes 22 questions compiled from COMEDK papers spanning 2012 to 2023.

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

These are COMEDK 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 COMEDK Chemistry?

Surface Chemistry has appeared in 11 of the 15 years of COMEDK papers covered here, with 22 questions across 12 papers - about 2 per paper it appears in.

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

Of the 22 questions analysed for this chapter, 59% are easy, 41% moderate and 0% tough. 2022 had the most, with 3 questions.

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

These topics have carried the most weightage in Surface Chemistry:

  • Adsorption - 7 questions (32%)
  • Colloids - 6 questions (27%)
  • Properties of colloidal solution - 6 questions (27%)