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Chemistry - Solutions

Practise 27 JEE Advanced previous year questions on Solutions, compiled from papers spanning 2006 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.

Solutions has been asked in 20 of the 27 years of JEE Advanced papers analysed (2000–2026), with 27 questions in all. 15% of them were easy, 63% moderate and 22% tough. Most of its questions came from 2026, with 3 questions that year. In the last three years (2024–2026) it had 5 questions across 6 papers, about 0.8 per paper.

The chapter's 3 topics are not weighted equally: Colligative Properties and Abnormal Molecular Masses (18 questions, 67%), Vapour pressure and raoult's law (8 questions, 30%), and Henry's law (1 question, 4%) have been asked the most. Colligative Properties and Abnormal Molecular Masses has also led over the last five years, with 4 questions. Colligative Properties and Abnormal Molecular Masses has produced the most tough questions (6).

  1. 1In a solvent , a compound is partially dissociated into and as given below: , and are non-volatile in nature. The molar mass of is times the2026 (Paper 2)Colligative Properties and Abnormal Molecular Masses
  2. 2Passage: Two volatile liquids A and B form an ideal solution. Consider a molal solution of B in A inside a closed container having a total v2026 (Paper 2)Vapour pressure and raoult's law
  3. 3Passage: Two volatile liquids A and B form an ideal solution. Consider a molal solution of B in A inside a closed container having a total v2026 (Paper 2)Vapour pressure and raoult's law
  4. 4At 300 K , an ideal dilute solution of a macromolecule exerts osmotic pressure that is expressed in terms of the height ( h ) of the solutio2025 (Paper 2)Colligative Properties and Abnormal Molecular Masses
  5. 5Vessel-1 contains of a non-volatile solute dissolved in of water. Vessel- 2 contains of another non-volatile solute dissolved in of water. B2024 (Paper 2)Colligative Properties and Abnormal Molecular Masses
  6. 650 mL of 0 . 2 molal urea solution (density = 1 . 012 g mL - 1 at 300 K ) is mixed with 250 mL of a solution containing 0 . 06 g of urea. Bo2023 (Paper 2)Colligative Properties and Abnormal Molecular Masses
  7. 7An aqueous solution is prepared by dissolving 0 . 1 mole of an ionic salt in 1 . 8 kg of water at 35 C . The salt remains 90 % dissociated i2022 (Paper 2)Vapour pressure and raoult's law
  8. 8The boiling point of water in a molal silver nitrate solution (solution ) is . To this solution , an equal volume of molal aqueous barium ch2021 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  9. 9The boiling point of water in a molal silver nitrate solution (solution ) is . To this solution , an equal volume of molal aqueous barium ch2021 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  10. 10Liquids A and B form ideal solution for all compositions of A and B at 25 C . Two such solutions with 0 . 25 and 0 . 50 mole fractions of A 2020 (Paper 2)Vapour pressure and raoult's law
  11. 11On dissolving 0.5 g of a non-volatile non-ionic solute to 39 g of benzene, its vapor pressure decreases from 650 m m H g to 640 m m H g . Th2019 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  12. 12Liquids A and B form ideal solution over the entire range of composition. At temperature T , equimolar binary solution of liquids A and B ha2018 (Paper 1)Vapour pressure and raoult's law
  13. 13The plot given below shows P - T curves (where, P is the pressure and T is the temperature) for two solvents X and Y and isomolal solutions 2018 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  14. 14For a solution formed by mixing liquids L and M , the vapour pressure of L plotted against the mole fraction of M in solution is shown in th2017 (Paper 1)Vapour pressure and raoult's law
  15. 15Pure water freezes at 273 K and 1 bar pressure. The addition of 34 . 5 g of ethanol to 500 g of water changes the freezing point of the solu2017 (Paper 2)Colligative Properties and Abnormal Molecular Masses
  16. 16Mixture(s) showing positive deviation from Raoult s law at 35 o C is (are)2016 (Paper 2)Vapour pressure and raoult's law
  17. 17If the freezing point of a 0.01 molal aqueous solution of a cobalt (III) chloride-ammonia complex (which behaves as a strong electrolyte) is2015 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  18. 18M X 2 dissociates in M 2 + and X - ions in an aqueous solution, with a degree of dissociation of 0.5. The ratio of the observed depression o2014 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  19. 19Benzene and naphthalene form an ideal solution at room temperature. For this process, the true statement(s) is (are)2013 (Paper 1)Vapour pressure and raoult's law
  20. 20For a dilute solution containing of a non-volatile non-electrolyte solute in of water, the elevation in boiling point at 1 atm pressure is .2012 (Paper 2)Colligative Properties and Abnormal Molecular Masses
  21. 21The freezing point (in ) of solution containing of (molecular weight 329 in of water is2011 (Paper 2)Colligative Properties and Abnormal Molecular Masses
  22. 22The Henry's law constant for the solubility of gas in water at is . The mole fraction of in air is . The number of moles of from air dissolv2009 (Paper 1)Henry's law
  23. 23Paragraph: Properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to 2008 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  24. 24Paragraph: Properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to 2008 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  25. 25Paragraph: Properties such as boiling point, freezing point and vapour pressure of a pure solvent change when solute molecules are added to 2008 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  26. 26When of naphthoic acid is dissolved in of benzene , a freezing point depression of is observed. The van't Hoff factor is2007 (Paper 1)Colligative Properties and Abnormal Molecular Masses
  27. 27of (phenol) is dissolved in a solvent of . If the depression in freezing point is , then find the of phenol that dimerises.2006Colligative Properties and Abnormal Molecular Masses

Frequently Asked Questions

1.How many questions are available for Solutions?

This chapter includes 27 questions compiled from JEE Advanced papers spanning 2006 to 2026.

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

These are JEE Advanced questions specifically for the Solutions chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Solutions an important chapter for JEE Advanced Chemistry?

Solutions has appeared in 20 of the 21 years of JEE Advanced papers covered here, with 27 questions across 21 papers - about one per paper it appears in.

4.What is the difficulty level of Solutions questions in JEE Advanced?

Of the 27 questions analysed for this chapter, 15% are easy, 63% moderate and 22% tough. 2026 had the most, with 3 questions.

5.Which topics in Solutions should I focus on?

These topics have carried the most weightage in Solutions:

  • Colligative Properties and Abnormal Molecular Masses - 18 questions (67%)
  • Vapour pressure and raoult's law - 8 questions (30%)
  • Henry's law - 1 question (4%)
  • Colligative Properties and Abnormal Molecular Masses has produced the most tough questions (6).
6.Is Solutions's weightage in JEE Advanced going up or down?

Across all 21 papers analysed, Solutions has averaged about 1.3 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.