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“Solutions” NEET UG Practice Paper Chemistry (PYQs) Part 12

NEET UG – Chemistry Practice Paper (PYQs) Part 12 | Topic: Solutions

NEET UG Chemistry Practice Paper – Part 12 (Solutions) is designed to strengthen one of the most formula-driven yet concept-oriented chapters of Physical Chemistry. Questions from the Solutions chapter appear regularly in NEET and are often considered easy scoring—but only when concepts like concentration terms, colligative properties, Raoult’s law, and abnormal molar mass are clearly understood. This practice paper brings together NEET-level MCQs inspired by previous years’ trends, helping students revise key formulas, apply concepts accurately, and avoid common mistakes. It is ideal for concept reinforcement, exam-oriented practice, and boosting confidence before full-length mock tests.

NEET UG – Chemistry Practice Paper (Previous Years’ Questions)

Part 12 | Topic: Solutions

Total Questions: 30 | Total Marks: 120

Q1. Molarity is defined as:




Molarity = moles of solute per litre of solution.

Q2. Molality is independent of:




Molality depends on mass, not volume.

Q3. Which is a colligative property?




Depends only on number of particles.

Q4. Raoult’s law applies best to:




Valid for ideal solutions.

Q5. Van’t Hoff factor (i) for NaCl is ideally:




NaCl dissociates into Na⁺ and Cl⁻.

Q6. Which solution has highest osmotic pressure?




CaCl₂ gives maximum particles.

Q7. Which colligative property is used to determine molar mass?




All can be used.

Q8. Which solution shows negative deviation from Raoult’s law?




Strong intermolecular interactions.

Q9. Unit of osmotic pressure is:




Pressure units apply.

Q10. Which property is independent of nature of solute?




All are colligative properties.

Q11. Henry’s law relates:




Gas solubility ∝ pressure.

Q12. Ideal solution shows:




No heat change on mixing.

Q13. Which concentration unit changes with temperature?




Volume changes with temperature.

Q14. Freezing point depression is given by:




Freezing point depression formula.

Q15. Which solution boils at highest temperature?




More particles → higher ΔTb.

Q16. Relative lowering of vapour pressure equals:




Δp/p° = xsolute.

Q17. Which solution shows positive deviation?




Weaker interactions.

Q18. Colligative properties depend on:




Only particle count matters.

Q19. Van’t Hoff factor less than 1 indicates:




Association reduces particle count.

Q20. Osmotic pressure method is best for:




Used for high molar mass substances.

Q21. Boiling point elevation constant depends on:




Kb is property of solvent.

Q22. Which solution has lowest freezing point?




Maximum ΔTf.

Q23. Henry’s law constant is high when:




High KH → low solubility.

Q24. Which is NOT a solution?




Milk is a colloid.

Q25. Vapour pressure of pure solvent is:




Adding solute lowers vapour pressure.

Q26. Which concentration unit is dimensionless?




Ratio of moles.

Q27. Osmotic pressure is directly proportional to:




π = CRT.

Q28. Which shows abnormal molar mass?




Association due to H-bonding.

Q29. Cryoscopic constant depends on:




Kf is solvent property.

Q30. Which solution obeys Raoult’s law most closely?




Similar intermolecular forces.

Conclusion: Why Part 12 (Solutions) Is Extremely Valuable for NEET Aspirants

The Solutions chapter plays a unique and crucial role in NEET Chemistry because it combines direct formula-based questions with deep conceptual understanding. Unlike some chapters where memorization dominates, Solutions rewards students who understand why formulas work and how different concentration terms and colligative properties are interconnected. NEET UG Chemistry Practice Paper – Part 12 is carefully structured to help students achieve exactly that level of clarity.

One of the biggest advantages of Part 12 is its strong focus on core NEET scoring areas such as molarity, molality, mole fraction, Raoult’s law, Henry’s law, and colligative properties. These topics are tested almost every year in NEET, often through seemingly simple questions that can easily trap students who lack conceptual precision. By solving this paper, students learn to handle these frequently repeated question types with confidence and accuracy.

Another major strength of Part 12 is its emphasis on colligative properties, a topic where many aspirants lose marks despite knowing the formulas. Concepts like elevation of boiling point, depression of freezing point, osmotic pressure, and relative lowering of vapour pressure are not difficult individually—but confusion often arises when electrolytes, Van’t Hoff factor, association, or dissociation come into play. This paper systematically exposes students to such scenarios, ensuring they understand how particle count directly affects observable properties.

Part 12 also plays a vital role in building clarity around abnormal molar mass determination. Questions involving association (such as benzoic acid in benzene) or dissociation (electrolytes in aqueous solution) are classic NEET favourites. Practicing these questions helps students avoid one of the most common mistakes in the exam—blindly applying formulas without adjusting the Van’t Hoff factor.

The inclusion of Raoult’s law and deviation-based questions further strengthens conceptual depth. NEET frequently tests whether students can distinguish between ideal and non-ideal solutions and identify positive or negative deviations based on intermolecular interactions. Part 12 ensures that students move beyond memorizing examples and truly understand the underlying reasoning behind vapour pressure behavior.

Another key benefit of this practice paper is its contribution to speed and accuracy. Solutions is a chapter where most calculations are short and manageable, but only if the correct formula and unit system are chosen instantly. Regular practice with a full 30-question paper trains students to identify the right approach quickly, saving valuable time during the actual NEET exam.

The instant explanation-based feedback provided after submission is especially important for this chapter. Small conceptual errors—such as confusing molarity with molality, misunderstanding temperature dependence, or misapplying Henry’s law—are immediately corrected. This prevents repeated mistakes and strengthens long-term retention.

Equally important is the confidence boost students gain from mastering this chapter. Since Solutions is perceived as an “easy” chapter by toppers, scoring poorly here can significantly hurt overall rank. Practicing Part 12 helps students turn this chapter into a reliable source of marks, reducing exam anxiety and improving overall performance.

In conclusion, NEET UG Chemistry Practice Paper – Part 12 is not just a revision set; it is a mark-stabilizing and score-enhancing tool. It reinforces formulas, sharpens conceptual understanding, improves numerical confidence, and eliminates common NEET traps. For aspirants aiming to maximize their Physical Chemistry score and build a strong foundation for competitive success, mastering the Solutions chapter through Part 12 is an essential and highly rewarding step in their NEET preparation journey.

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