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Important Questions: Chemical Thermodynamics for JEE

14+ syllabus-aligned questions available

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The most important Chemical Thermodynamics questions for JEE cover conceptual traps, standard results, and numerical patterns from Fundamentals of thermodynamics: System and surroundings, extensive and intensive properties, state functions, entropy, types of processes, The first law of thermodynamics: Concept of work, heat, internal energy and enthalpy, heat capacity, molar heat capacity, Hess's law of constant heat summation, Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution, and more. Goodmarks provides 14+ high-yield MCQs with full solutions.

Focus on what matters most. These important Chemical Thermodynamics questions cover high-weightage concepts from Fundamentals of thermodynamics: System and surroundings, extensive and intensive properties, state functions, entropy, types of processes, The first law of thermodynamics: Concept of work, heat, internal energy and enthalpy, heat capacity, molar heat capacity, Hess's law of constant heat summation, Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution, and more — the topics JEE repeats every year.

Subtopics in Chemical Thermodynamics

  • Fundamentals of thermodynamics: System and surroundings, extensive and intensive properties, state functions, entropy, types of processes
  • The first law of thermodynamics: Concept of work, heat, internal energy and enthalpy, heat capacity, molar heat capacity
  • Hess's law of constant heat summation
  • Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution
  • The second law of thermodynamics: Spontaneity of processes, Delta S of the universe and Delta G of the system as criteria for spontaneity
  • Delta G° (Standard Gibbs energy change) and equilibrium constant

Free sample questions

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Q1ChemistryUnit 4: Chemical Thermodynamics
The plot shows the variation of −ln⁡Kp-\ln \boldsymbol{K}_{\boldsymbol{p}} versus temperature for the two reactions. M(s)+12O2(g)→MO(s)M(s)+\frac{1}{2} O_{2}(g) \rightarrow M O(s) and C(s)+12O2(g)→CO(s)C(s)+\frac{1}{2} O_{2}(g) \rightarrow C O(s) Identify the correct statement?
Q2ChemistryUnit 4: Chemical Thermodynamics
An ideal gas is compressed in a closed container its U?
Q3ChemistryUnit 4: Chemical Thermodynamics
A system is said to be in thermodynamic equilibrium with Surrounding ¡f
Q4ChemistryUnit 4: Chemical Thermodynamics
Assertion The change in internal energy and change in heat enthalpy does not depend upon the path by which changes are brought in. Reason Both ΔU\Delta U and ΔH\Delta H are path independent as U and H are state functions.
Q5ChemistryUnit 4: Chemical Thermodynamics
For a given reaction, H2O(l)⇌\boldsymbol{H}_{2} \boldsymbol{O}(l) \rightleftharpoons H2O(s)at0∘CH_{2} O(s) a t 0^{\circ} C and 1 bar, which of the following is true?
Q6ChemistryUnit 4: Chemical Thermodynamics
Assertion Adsorption is exothermic and spontaneous inspite of the fact that adsorption is accompained with decrease in entropy. Reason The factor TΔST \Delta S is lesser than ΔH\Delta H
Q7ChemistryUnit 4: Chemical Thermodynamics
When fuel is added to the exhaust (burnt) gases in a jet engine combustion takes place. Some facts are mentioned here about this combustion. Pick the false one?
Q8ChemistryUnit 4: Chemical Thermodynamics
Which of the following equations corresponds to the definition of enthalpy of formation at 298K?298 K ?

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Frequently asked questions

What makes a Chemical Thermodynamics question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Chemical Thermodynamics are high-weightage?

Key areas include Fundamentals of thermodynamics: System and surroundings, extensive and intensive properties, state functions, entropy, types of processes, The first law of thermodynamics: Concept of work, heat, internal energy and enthalpy, heat capacity, molar heat capacity, Hess's law of constant heat summation, Enthalpies of bond dissociation, combustion, formation, atomization, sublimation, phase transition, hydration, ionization and solution, and more. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.

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