Thermodynamics — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

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

Combined First and Second Law Numerical

high

NEET often tests the integrated understanding of concepts. A question might involve calculating $\Delta U$ using the First Law, then using this information along with $\Delta S$ to determine $\Delta G$ and spontaneity. For example, given Q and W, calculate $\Delta U$, then given $\Delta S$, calculate $\Delta G$ at a specific temperature. This tests multiple formulas and conceptual links, making it a good discriminator for students with deep understanding.

Graphical Representation of Thermodynamic Processes

medium

While less common, questions involving P-V diagrams for different processes (isothermal, adiabatic, isobaric, isochoric) can appear. Students might be asked to identify the type of process from a graph, compare work done in different paths, or relate areas under the curve to work. This tests visual interpretation and conceptual understanding of process characteristics, moving beyond mere formula application.

Application of Third Law and Absolute Entropy

low

The Third Law is often mentioned but rarely tested in depth in NEET. However, a question could involve comparing absolute entropies of different substances at a given temperature, or a conceptual question about the implications of absolute zero entropy. This would test a more nuanced understanding of entropy beyond just its change in a reaction, potentially catching students off guard if they only focus on $\Delta S$ calculations.