Solutions — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

Based on trend analysis, current affairs, and recurring themes in Solutions.

Combined Colligative Property Calculation with Van't Hoff Factor

high

NEET frequently tests the application of colligative properties. A common advanced problem involves using one colligative property (e.g., freezing point depression) to determine the molality or Van't Hoff factor, and then using that information to calculate another colligative property (e.g., osmotic pressure or boiling point elevation). This tests multiple concepts and calculation skills simultaneously, making it a strong candidate for a challenging question. Students must be proficient in applying 'i' correctly for different electrolytes.

Conceptual Questions on Azeotropes and Deviations from Raoult's Law

medium

While numerical problems dominate, conceptual understanding of ideal vs. non-ideal solutions, positive/negative deviations, and azeotropes is crucial. Questions might ask to identify examples of solutions forming minimum/maximum boiling azeotropes, or to relate the sign of $\Delta H_{\text{mix}}$ and $\Delta V_{\text{mix}}$ to the type of deviation. This tests a deeper understanding beyond mere formula application and is a good discriminator for conceptual clarity.

Solubility of Gases and Henry's Law in Real-World Contexts

medium

Henry's Law is a direct application of gas solubility. Questions could involve calculating mole fraction or partial pressure, but also extend to conceptual aspects like the effect of temperature on gas solubility in aquatic life or the 'bends' experienced by divers. This integrates the theoretical concept with practical scenarios, aligning with NEET's emphasis on application-based knowledge.