Exam-Style Online Test | Class 11 Chemistry: Thermodynamics
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Class 11 Chemistry — Chapter 6: Thermodynamics Online Test

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Class 11 Chemistry: Thermodynamics Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 20

1. Using formation enthalpies , , , compute for .

2 / 20

2. One mole of an ideal gas expands isothermally and reversibly at 300 K from 5.0 L to 15.0 L. What is the work done by the gas?

3 / 20

3. The second law of thermodynamics can be expressed in terms of entropy as:

4 / 20

4. Which condition represents equilibrium between spontaneous and non-spontaneous behavior?

5 / 20

5. Which of the following statements is correct about average bond enthalpy?

6 / 20

6. The enthalpy of formation of CO₂ is –393.5 kJ/mol and that of CO is –110.5 kJ/mol. What is the enthalpy change for oxidation of CO to CO₂?

7 / 20

7. For the reaction , the heat of neutralization is approximately:

8 / 20

8. If for air, what is ?

9 / 20

9. What is the difference between specific heat capacity and molar heat capacity?

10 / 20

10. Which statement about enthalpy is correct?

11 / 20

11. Which pair below includes only state functions?

12 / 20

12. Which of the following correctly differentiates extensive from intensive properties?

13 / 20

13. During the compression of a gas in a closed cylinder, which of the following statements is true?

14 / 20

14. In thermodynamics, which statement about a closed system is always true?

15 / 20

15. In an isothermal process, which of the following remains constant?

16 / 20

16. In thermodynamics, what are state variables?

17 / 20

17. In the equation , a negative value of ( w ) indicates that:

18 / 20

18. When a system absorbs heat, the sign of q according to chemistry convention is:

19 / 20

19. In the equation , what does each term represent?

20 / 20

20. Consider the reaction: . The standard enthalpy of formation of water is –286 kJ mol⁻¹. What is ΔH°rxn?

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Class 11 Chemistry: Thermodynamics Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

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  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. What is meant by the heat of neutralization?

2 / 30

2. The enthalpy of decomposition of CaCO₃(s) → CaO(s) + CO₂(g) can be calculated using Hess’s law by combining:

3 / 30

3. The standard enthalpy of reaction can be expressed as:

4 / 30

4. What is meant by the heat of dilution?

5 / 30

5. Which setup is the best example of a closed system?

6 / 30

6. Which of the following correctly represents the bond dissociation enthalpy of hydrogen gas?

7 / 30

7. Gibbs free energy (G) is useful because it indicates:

8 / 30

8. Why is residual entropy important in applying the third law?

9 / 30

9. Using formation enthalpies , , , compute for .

10 / 30

10. What happens to the internal energy of an ideal gas during an isothermal process?

11 / 30

11. Which pair below includes only state functions?

12 / 30

12. In a cyclic process where the system returns to its original state, which statement is true?

13 / 30

13. Which of the following equations represents a heat of neutralization reaction?

14 / 30

14. An ideal gas has . What are and for the gas?

15 / 30

15. When will a reaction with and be spontaneous?

16 / 30

16. Which statement correctly distinguishes standard conditions from STP in many textbooks?

17 / 30

17. What is an open system in thermodynamics?

18 / 30

18. What is an intensive property in thermodynamics?

19 / 30

19. Which of the following statements correctly describes entropy?

20 / 30

20. The SI unit of heat energy is:

21 / 30

21. In thermodynamics, what are state variables?

22 / 30

22. What is the unit of molar heat capacity in SI system?

23 / 30

23. What does the term pressure–volume (P–V) work represent in thermodynamics?

24 / 30

24. Which of the following correctly represents the average bond enthalpy of C–H bonds in methane?

25 / 30

25. At constant volume, the molar heat capacity of an ideal gas is represented as:

26 / 30

26. For an endothermic process to be spontaneous, what must be true?

27 / 30

27. Which condition represents equilibrium between spontaneous and non-spontaneous behavior?

28 / 30

28. In an isolated system, what happens to the total energy?

29 / 30

29. Consider the reaction: . The standard enthalpy of formation of water is –286 kJ mol⁻¹. What is ΔH°rxn?

30 / 30

30. According to the third law, what is the entropy of an imperfect crystal at 0 K?

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Class 11 Chemistry: Thermodynamics Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

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  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. Why is it impossible to reach absolute zero temperature?

2 / 50

2. Which of the following is an extensive property?

3 / 50

3. Which of the following equations represents a heat of neutralization reaction?

4 / 50

4. The third law of thermodynamics is useful in calculating which of the following?

5 / 50

5. Which statement correctly describes state and path functions?

6 / 50

6. If the ΔH°f for CO₂(g) is –393.5 kJ/mol and for H₂O(l) is –286 kJ/mol, what is ΔH°rxn for combustion of CH₄(g)?

7 / 50

7. If the molar heat capacity of a monatomic ideal gas at constant volume is , what is its heat capacity at constant pressure?

8 / 50

8. What does the equation represent?

9 / 50

9. For an ideal gas, the relation between molar heat capacities and is:

10 / 50

10. In thermodynamics, what does the term "work" refer to?

11 / 50

11. What is meant by the standard enthalpy of a reaction (ΔH°rxn)?

12 / 50

12. If , which factor decreases Gibbs free energy the most at high temperatures?

13 / 50

13. What is the fundamental relation between molar heat capacities at constant pressure and volume for an ideal gas?

14 / 50

14. When ΔG = 0, what does it signify?

15 / 50

15. Why is internal energy considered a state function, but work is not?

16 / 50

16. For any cyclic process, the net change in which of the following quantities is zero?

17 / 50

17. The enthalpy of decomposition of CaCO₃(s) → CaO(s) + CO₂(g) can be calculated using Hess’s law by combining:

18 / 50

18. Why are standard conditions specified when tabulating thermodynamic data?

19 / 50

19. Which relation correctly connects enthalpy and internal energy changes at constant pressure for a gas process?

20 / 50

20. One mole of a monatomic ideal gas is heated from 300 K to 500 K at constant pressure. If , what is ?

21 / 50

21. When two isolated systems are brought in contact and allowed to interact, the combined system:

22 / 50

22. When will a reaction with and be spontaneous?

23 / 50

23. What determines whether a boundary allows transfer of matter or energy?

24 / 50

24. Which of the following correctly describes an isothermal expansion of an ideal gas?

25 / 50

25. At 298 K a reaction has . What is the equilibrium constant ( K )?

26 / 50

26. Which of the following is NOT a type of thermodynamic system?

27 / 50

27. Which of the following is an example of a state function that can be derived from path functions?

28 / 50

28. Why are industrial chemical reactors considered open systems?

29 / 50

29. For a process with and , what will be the sign of ?

30 / 50

30. Which of the following correctly represents the average bond enthalpy of C–H bonds in methane?

31 / 50

31. What type of work is associated with the expansion of a gas?

32 / 50

32. Which of the following is an example of a spontaneous process?

33 / 50

33. What is meant by the heat of neutralization?

34 / 50

34. What is meant by the heat of atomization of an element or compound?

35 / 50

35. Which of the following statements about P–V work is true?

36 / 50

36. In the first law of thermodynamics, the term q represents:

37 / 50

37. What is the entropy change of the universe for an irreversible process?

38 / 50

38. What happens to the work done when a gas expands against zero external pressure (vacuum)?

39 / 50

39. Which of the following represents a correct relation between state functions?

40 / 50

40. Which of the following statements about lattice enthalpy is correct?

41 / 50

41. In an open system, internal energy can change due to:

42 / 50

42. Which of the following compounds has the highest lattice enthalpy?

43 / 50

43. Which of the following processes occurs in an isolated system?

44 / 50

44. What is the SI unit of energy commonly used in thermodynamics?

45 / 50

45. What is the expression for entropy change (ΔS) in a reversible process?

46 / 50

46. Which of the following characteristics does not apply to an open system?

47 / 50

47. What is the thermodynamic definition of enthalpy H?

48 / 50

48. Why is lattice enthalpy important in thermodynamics?

49 / 50

49. Which of the following statements about open systems is correct?

50 / 50

50. What is meant by the heat of solution?

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Practice Thermodynamics MCQs
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Class 11 Chemistry — Chapter 6: Thermodynamics Online Test

The Class 11 Chemistry: Chapter 6 – Thermodynamics Online Test provides a comprehensive pool of 395 MCQs designed to evaluate your understanding of the core principles of thermodynamics. This test is free, aligned with the NCERT/CBSE Class 11 syllabus, and offers unlimited practice opportunities to help you master thermodynamic concepts. With three levels of difficulty, you can gradually increase the challenge and track your progress.

Whether you are preparing for school exams or competitive tests like JEE/NEET, this online test will guide you through the key concepts of thermodynamics, from energy conservation to the laws governing thermodynamic processes. This test works as both a revision tool and a mock exam to enhance your speed, accuracy, and conceptual clarity.

Feeling a bit anxious before your exams? Don’t worry, this page is here to help. It’s like a mock test for you to practice at your own pace—whether at home or on the go. With each attempt, you’ll see your score, get instant feedback, and learn from the mistakes. When you’re ready, challenge yourself with Paper 3 for a higher level of difficulty and earn a certificate.

What is the Class 11 Chemistry: Thermodynamics Online Test?

This page contains three exam-style MCQ papers for Chapter 6: Thermodynamics:

  • Paper 1 (Easy) — Foundation: 20 questions · 30 min · Pass 40% · Fixed set
  • Paper 2 (Medium) — Mixed: 30 questions · 45 min · Pass 50% · Randomized from a pool of ~395 questions
  • Paper 3 (Hard) — Challenge: 50 questions · 75 min · Pass 70% · Randomized from the same pool + Certificate on pass

Note: Paper 2 and Paper 3 are randomized, ensuring a new set of questions on each attempt. All papers are timed, auto-evaluated, and show your score with detailed answer reviews.

Topics Covered in this Online Test

This online test covers a wide range of topics in Thermodynamics from the NCERT Class 11 Chemistry syllabus. The following topics are included:

  • Introduction to Thermodynamics — Definition, system, surroundings, and types of systems
  • First Law of Thermodynamics — Internal energy, heat, work, and the concept of energy conservation
  • Enthalpy — Enthalpy changes, heat capacity, and Hess’s Law
  • Work and Heat — Types of work, heat exchange in different processes (isothermal, adiabatic)
  • Thermodynamic Processes — Isothermal, adiabatic, isobaric, isochoric processes
  • Second Law of Thermodynamics — Entropy, spontaneous processes, and reversibility
  • Gibbs Free Energy — Criteria for spontaneity, Gibbs free energy change (ΔG)
  • Heat Engines and Refrigerators — Carnot engine, efficiency, and refrigerator working
  • Entropy and its significance — Entropy as a measure of disorder, Clausius inequality
  • Thermodynamic Cycles — Carnot cycle, Rankine cycle, efficiency of cycles

For a more detailed understanding, you can refer to: Thermodynamics MCQs and explore more questions from Class 11 Chemistry MCQ Collection.

How This Exam-Style Online Test Works

Quick Summary: Select a paper → answer MCQs within the given time → submit → instantly see your score and review your answers. Achieve a passing score on Paper 3 to earn a certificate.

What you’ll see during the test

  • MCQs: One question with four options (A, B, C, D).
  • Timer on top: P1: 30 min • P2: 45 min • P3: 75 min.
  • Pagination: Typically 10 questions per page (navigate through using page controls).
  • Navigation: Use Next/Prev buttons or the question map to revisit questions before submission.
  • View Result: After submitting, click View Result to see your score, correct answers, and mistakes.
  • Restart: Click Restart Test to retry and improve your score with a fresh set of questions (Paper 2 & Paper 3).

Note: After completing the test, feel free to share your feedback on the result page.

Marking & pass criteria

  • Scoring: +1 for correct answers, 0 for incorrect answers (no negative marking).
  • Passing marks: Paper 1 — 40%, Paper 2 — 50%, Paper 3 — 70%.
  • Randomization: Paper 2 and Paper 3 shuffle questions from a large question pool, so every attempt offers fresh challenges.

Who can take this test?

  • Class 11 CBSE students preparing for midterms, unit tests, or final exams in Chemistry.
  • NEET and JEE aspirants strengthening their understanding of thermodynamics and core concepts.
  • Self-learners and home-schoolers looking for a structured way to practice thermodynamics.
  • Teachers and tutors seeking pre-made assessments for students to test their knowledge.
  • Other boards & countries following similar Chemistry curriculums.

Benefits of this Online Test

  • Real exam experience: Timed MCQs simulate exam conditions, building speed and accuracy.
  • Instant results: See your score right away and review the answers for better understanding.
  • Step-up difficulty: Progress through Paper 1 → Paper 2 → Paper 3 and earn a certificate.
  • Unlimited practice: Practice as many times as you need with randomized questions in Paper 2 & 3.
  • Completely free: No fees, no login required—just unlimited access to test your knowledge.

How This Test Helps You Study More Effectively

  • Step 1 – Concept Check: Start with Paper 1 to check your basic understanding.
  • Step 2 – Reinforcement: Attempt Paper 2 to reinforce your concepts.
  • Step 3 – Challenge: Finish with Paper 3 to test your exam readiness.
  • Step 4 – Review: Examine mistakes, understand explanations, and reattempt missed questions.
  • Step 5 – Retake Smartly: Reattempt after 1–2 days to ensure long-term retention and recall.

Important Notes (Please Read Before You Start)

  • Do not refresh or close the browser tab during the test to avoid session loss.
  • Best experience: Use a stable internet connection and the latest browser version (e.g., Chrome or Edge).
  • Allow cookies / local storage to track your progress and test session.
  • Safety: This test is 100% free—ignore any unsolicited payment requests.

More Practice for Class 11 Chemistry

After completing this online test, continue practicing with our comprehensive set of MCQs for other chapters: Class 11 Chemistry MCQs or practice other chapters from: Class 11 Chemistry Online Test Index.

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