Practice & Test Thermodynamics (Chemistry)

Class 11 Chemistry · Chapter 5. Practice 43 free NEET 2027 questions on Thermodynamics (Class 11 Chemistry), across 20 concepts. Asked ~3.1× per paper since 2013.

Practice questions

Concepts tagged

Asked 2013–2025

3.1×

Per paper

How much does Thermodynamics matter?

Across the 13 NEET papers from 2013 to 2025, Thermodynamics has been examined 40 times — an average of 3.1 questions per paper. At 4 marks each, that is roughly 12 marks a year riding on this one chapter.

What gets asked: 57 concepts

Every question in the bank is tagged to one of these, so practice can target the exact idea you keep missing.

Applications of First LawApplications of First Law of ThermodynamicsBomb CalorimeterBond EnthalpyCalculating reaction enthalpy from bond dissociation enthalpiesDelta UEndothermic ReactionEnthalpies for Different Types of ReactionsEnthalpy ChangeEnthalpy Change during Phase TransformationsEnthalpy Change of a Reactionenthalpy formation waterEnthalpy of formation elementEnthalpy of ReactionEntropyEntropy and Second Law of ThermodynamicsEntropy of Thermodynamic SystemEquation for Work DoneExothermic ReactionsextensiveGibbs Energy Change and EquilibriumGibbs Free EnergyGibbs Free Energy and SpontaneityH from UH U diatomicheat capacityHess statementHess's Law of Constant Heat SummationHess's Law of Heat SummationIntensive propertyInternal Energyinternal energy releasedInterpretation of Work from Graph of Expansion ProcessIsolated Systemmatch systemsMathematical statement of First Law of ThermodynamicsMeasurement of Energy Changes: CalorimetryOpen SystemPath FunctionPerpetual ARq from U and wqp qv ARSign of the enthalpy of combustionSpontaneitySpontaneity in Terms of Entropy ChangeSpontaneous Reactionsstandard state ARState VariableState Variables or State FunctionsSurroundings in ThermodynamicsThermodynamic Equilibrium and ProcessesThermodynamic Equilibrium StateThermodynamicsThird Law of ThermodynamicsWork Done in An Isothermal Expansion For Ideal SystemWork Done in Reversible Adiabatic ProcessWork Done in Reversible Isothermal Expansion

Sample questions

Question 1

For a spontaneous process, which of the following is true?

Question 2

For a given reaction, $\Delta H = +25 \text{ kJ/mol}$ and $\Delta S = +100 \text{ J/mol K}$. At what temperature will the reaction become spontaneous? (Assume $\Delta H$ and $\Delta S$ are independent of temperature)

Question 3

For the reaction $\text{N}_2(g) + 3\text{H}_2(g) \rightarrow 2\text{NH}_3(g)$, the relation between $\Delta H$ and $\Delta U$ at temperature $T$ is:

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