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Chemical Thermodynamics — JEE Practice

30 practice questions across 2 topics. Filter by difficulty, solve topic-wise MCQs, and review detailed solutions.

2 Topics30 Questions

First Law & Enthalpy(15 Qs)

easy (5)

Q1The first law of thermodynamics is:Q2An exothermic reaction has:Q3Hess's law states that enthalpy change:Q4Standard enthalpy of formation of an element in its standard state is:Q5Work done in free expansion of an ideal gas is:

medium (5)

Q1For an ideal gas, the relation ΔH = ΔU + ΔnRT applies where Δn is:Q2Born-Haber cycle is used to calculate:Q3Bond dissociation energy of H-H is 436 kJ/mol. To break 1 mol H₂ requires:Q4In an adiabatic process:Q5Enthalpy of combustion of methane is -890 kJ/mol. This means:

hard (5)

Q1Kirchhoff equation relates ΔH at different temperatures:Q2The enthalpy of sublimation equals:Q3For a reaction at equilibrium:Q4Resonance energy is the difference between:Q5The Gibbs-Helmholtz equation is:

Entropy & Gibbs Energy(15 Qs)

easy (5)

Q1Entropy is a measure of:Q2For a spontaneous process, ΔG is:Q3The second law states that the entropy of the universe:Q4Units of entropy are:Q5At constant pressure, ΔG = ΔH - TΔS. A reaction is always spontaneous when:

medium (5)

Q1The standard Gibbs energy change and equilibrium constant are related by:Q2A reaction with ΔH > 0 and ΔS > 0 is spontaneous at:Q3Third law of thermodynamics states:Q4For an isothermal reversible expansion of ideal gas:Q5The efficiency of a Carnot engine operating between T_H and T_C is:

hard (5)

Q1ΔG° for the reaction A → B is -4.606 kJ at 298 K. The equilibrium constant K is:Q2Trouton's rule states that ΔH_vap/T_bp ≈:Q3For a galvanic cell, the maximum work obtainable is:Q4Entropy change when 1 mol of ice melts at 273 K (ΔH_fus = 6 kJ/mol) is:Q5For a process to be spontaneous at all temperatures, the conditions are:

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Chemical Equilibrium

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Electrochemistry

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Solutions

15 Qs

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