Chemistry - Solutions
Practise 19 WBJEE previous year questions on Solutions, compiled from papers spanning 2012 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 WBJEE tests.
Solutions has been asked in 14 of the 18 years of WBJEE papers analysed (2009–2026), with 19 questions in all. 42% of them were easy, 37% moderate and 21% tough. Most of its questions came from 2024, with 3 questions that year. In the last three years (2024–2026) it had 6 questions across 3 papers, about 2 per paper.
The chapter's 4 topics are not weighted equally: Colligative Properties and Abnormal Molecular Masses (12 questions, 63%), Vapour pressure and raoult's law (3 questions, 16%), and Henry's law (3 questions, 16%) have been asked the most. Colligative Properties and Abnormal Molecular Masses has also led over the last five years, with 6 questions. Colligative Properties and Abnormal Molecular Masses has produced the most tough questions (3).
- 1Glucose is added to litre of water to such an extent that equals to . The weight of glucose added is2026Colligative Properties and Abnormal Molecular Masses
- 2The van't Hoff Factor (i) for a dilute aqueous solution of is2026Colligative Properties and Abnormal Molecular Masses
- 3P and Q combines to form two compounds and . If is dissolved in 51 g benzene the depression of freezing point becomes . On the other hand if2025Colligative Properties and Abnormal Molecular Masses
- 4Identify the incorrect statement among the following:2024Henry's law
- 5Equal volumes of aqueous solution of and are mixed. The concentration of ions in the resulting solution is2024Solubility and Concentration of Solutions
- 6The correct order of boiling point of the given aqueous solution is2024Colligative Properties and Abnormal Molecular Masses
- 7A solution containing \(4 {~g}\) of polymer in 4.0 litre solution at \(27^{ } {C}\) shows an osmotic pressure of \(3.0 10^{-4} {~atm}\). The2023Colligative Properties and Abnormal Molecular Masses
- 8Pick the correct statement.2022Colligative Properties and Abnormal Molecular Masses
- 9When of naphthoic acid is dissolved in of benzene, a freezing point depression of is observed. The vant Hoff factor (i) is2021Colligative Properties and Abnormal Molecular Masses
- 10Equal masses of ethane and hydrogen are mixed in a empty container at . The fraction of total pressure exerted by hydrogen is2020Vapour pressure and raoult's law
- 11(water) . The temperature at which ice begins to separate from a mixture of 10 mass ethylene glycol is2020Henry's law
- 12Equal weights of ethane and hydrogen are mixed in an empty container at 25 C. The fraction of total pressure exerted by hydrogen is2018Henry's law
- 13Assuming the compounds to be completely dissociated in aqueous solution, identify the pair of the solutions that can be expected to be isoto2017Colligative Properties and Abnormal Molecular Masses
- 14If and are the vapour pressure of the pure solvent and solution and and are the moles of solute and solvent respectively in the solution the2016Vapour pressure and raoult's law
- 15At a certain temperature, the value of the slope of the plot of osmotic pressure against concentration in ) of a certain polymer solution is2015Colligative Properties and Abnormal Molecular Masses
- 16To observe an elevation of boiling point of the amount of a solute (mol. wt. ) to be added to of water is2014Colligative Properties and Abnormal Molecular Masses
- 17The measured freezing point depression for a aqueous solution is . The acid dissociation constant at this concentration will be (Given, the 2013Colligative Properties and Abnormal Molecular Masses
- 18of and of glucose were separately dissolved in of water. Identify the correct statement regarding the elevation of boiling point (b.p) of th2012Colligative Properties and Abnormal Molecular Masses
- 19Which of the following will show a negative deviation from Raoult's law?2012Vapour pressure and raoult's law
Frequently Asked Questions
1.How many questions are available for Solutions?
This chapter includes 19 questions compiled from WBJEE papers spanning 2012 to 2026.
2.Are these questions only from WBJEE, or from other exams too?
These are WBJEE 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 WBJEE Chemistry?
Solutions has appeared in 14 of the 18 years of WBJEE papers covered here, with 19 questions across 14 papers - about one per paper it appears in.
4.What is the difficulty level of Solutions questions in WBJEE?
Of the 19 questions analysed for this chapter, 42% are easy, 37% moderate and 21% tough. 2024 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 - 12 questions (63%)
- Vapour pressure and raoult's law - 3 questions (16%)
- Henry's law - 3 questions (16%)
- Colligative Properties and Abnormal Molecular Masses has produced the most tough questions (3).
6.Is Solutions's weightage in WBJEE going up or down?
Across all 14 papers analysed, Solutions has averaged about 1.4 questions per paper. In the last three years (2024–2026), that average has risen, at about 2.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.