NeetVictoryQuestion 1: Colligative Properties
The solution of NaCl that is isotonic with blood is:
- A 20%
- B 9%
- C 0.9% (mass/volume), known as saline
- D 0.09%
Answer: C. 0.9% (mass/volume), known as saline
Why: It has the same osmotic pressure as the blood cells.
NEET Chemistry: Solutions. Chapter-wise Practice Questions and Test
Solutions is a Class 12 Chemistry chapter that carries about 2.8% of the Chemistry questions in NEET. Practise it with 41 questions covering 2 topics, each with an explanation.
Practise Solutions
Open in the appSets of 15 questions that adapt to your level, with an explanation for every answer.
Topics covered in Solutions
- Colligative Properties (20 questions)
- Concentration Terms and Raoult's Law (21 questions)
How often Solutions has come up in NEET
Across the 13 previous year papers, Solutions had 19 questions, about 1.5 a year. The most in one paper was 2, in NEET 2016.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 2 |
| NEET 2025 | 2 |
| NEET 2024 | 2 |
| NEET 2023 | 0 |
| NEET 2022 | 1 |
| NEET 2021 | 2 |
| NEET 2020 | 2 |
| NEET 2019 | 2 |
| NEET 2018 | 0 |
| NEET 2017 | 2 |
| NEET 2016 | 2 |
| Re-AIPMT 2015 | 1 |
| AIPMT 2014 | 1 |
Sample questions on Solutions with answers
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
Question 2: Concentration Terms and Raoult's Law
Molarity of a solution is defined as the number of moles of solute per:
- A litre of solvent
- B litre of solution
- C kg of solvent
- D kg of solution
Answer: B. litre of solution
Why: Molarity = moles of solute / volume of solution (in litres), not per volume of solvent alone.
Question 3: Colligative Properties
When a solute associates in solution, as benzoic acid does in benzene, the van't Hoff factor is:
- A equal to 1
- B greater than 1
- C equal to zero
- D less than 1
Answer: D. less than 1
Why: Association reduces the number of particles, so the observed colligative property is smaller and the apparent molar mass is higher.
Question 4: Concentration Terms and Raoult's Law
A mixture of nitric acid and water shows a negative deviation, and its azeotrope:
- A cannot form
- B boils at a lower temperature
- C boils at a higher temperature than either component (maximum boiling azeotrope)
- D is a gas
Answer: C. boils at a higher temperature than either component (maximum boiling azeotrope)
Why: The composition is about 68% nitric acid.
Question 5: Colligative Properties
Reverse osmosis is used for the desalination of sea water. It requires applying a pressure that is:
- A less than the osmotic pressure
- B greater than the osmotic pressure of the solution
- C equal to atmospheric pressure only
- D zero
Answer: B. greater than the osmotic pressure of the solution
Why: The pressure forces the solvent through the membrane from the solution side.
Question 6: Concentration Terms and Raoult's Law
The mole fraction of the solvent in a solution is 0.8. If the vapour pressure of the pure solvent is 100 mm Hg, the vapour pressure of the solution is:
- A 20 mm Hg
- B 100 mm Hg
- C 125 mm Hg
- D 80 mm Hg
Answer: D. 80 mm Hg
Why: Raoult's law: p = x_solvent × p° = 0.8 × 100 = 80 mm Hg.
Question 7: Colligative Properties
The van't Hoff factor (i) for a solute that dissociates completely into 3 ions in solution is:
- A 1
- B 2
- C 3
- D 0
Answer: C. 3
Why: The van't Hoff factor represents the number of particles a solute dissociates into in solution; for complete dissociation into 3 ions, i = 3.
Question 8: Concentration Terms and Raoult's Law
According to Raoult's law, the vapor pressure of a solution containing a non-volatile solute is:
- A higher than that of the pure solvent
- B lower than that of the pure solvent
- C equal to that of the pure solvent
- D independent of the solvent's vapor pressure
Answer: B. lower than that of the pure solvent
Why: Adding a non-volatile solute lowers the mole fraction of solvent, so by Raoult's law, the solution's vapor pressure is lower than the pure solvent's.
Practise all of Solutions
Open in the appFrequently asked questions
How many questions come from Solutions in NEET?
Solutions carries about 2.8% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 19 times, about 1.5 questions a year.
Which class is Solutions from?
Solutions is a Class 12 Chemistry chapter in the NCERT syllabus.
Where can I practise Solutions questions for NEET?
NeetVictory has 41 practice questions on Solutions, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.