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. One mole of an ideal gas expands isothermally and reversibly at 298 K from 2.0 L to 8.0 L. What is of the gas?

2 / 30

2. What is meant by molar heat capacity?

3 / 30

3. For an ideal gas undergoing an isothermal process, which statement is correct?

4 / 30

4. Which of the following has the highest bond enthalpy?

5 / 30

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

6 / 30

6. The boundary of a thermos flask containing hot tea can be considered as:

7 / 30

7. Which of the following statements correctly describes heat transfer?

8 / 30

8. Which of the following represents the standard heat of formation of water?

9 / 30

9. For an ideal gas, which statement best describes the relation between ΔH and ΔU?

10 / 30

10. What is the thermodynamic definition of enthalpy H?

11 / 30

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

12 / 30

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

13 / 30

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

14 / 30

14. Which of the following conditions results in maximum work done by a gas?

15 / 30

15. Under which conditions does Gibbs free energy remain constant?

16 / 30

16. Why are heats of atomization always positive?

17 / 30

17. The differential form of enthalpy is most generally written as:

18 / 30

18. Which of the following processes represents heat of atomization?

19 / 30

19. How does the third law help in calculating entropy changes for chemical reactions?

20 / 30

20. For a reversible isothermal expansion of an ideal gas, which quantity depends on the process path?

21 / 30

21. The value of for a monoatomic ideal gas is:

22 / 30

22. Which of the following statements about entropy at 0 K is true?

23 / 30

23. The standard enthalpy of combustion of graphite is –393.5 kJ/mol, and that of CO is –283 kJ/mol. Using Hess’s law, calculate ΔH°f for CO.

24 / 30

24. What does Hess’s law state?

25 / 30

25. One mole of an ideal gas undergoes isothermal, reversible compression at 300 K from 10.0 L to 2.0 L. Compute the work on the gas.

26 / 30

26. Which of the following conditions must hold true for a process to be reversible?

27 / 30

27. A 50 g copper block at 100°C is dropped into 100 g of water at 25°C in an insulated beaker. Given , . What is the final temperature?

28 / 30

28. For the same volume change, how does entropy change differ between reversible and irreversible expansion of a gas?

29 / 30

29. Which of the following reactions has ΔH° = 0 by definition?

30 / 30

30. Which of the following is an irreversible process?

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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. The heat of atomization of chlorine gas (Cl₂) is 243 kJ/mol. What is the bond dissociation energy of the Cl–Cl bond?

2 / 50

2. For a solute A in solution, the standard chemical potential μ°A corresponds to which condition?

3 / 50

3. Which of the following correctly expresses the entropy at 0 K for a perfect crystal?

4 / 50

4. Under which conditions does Gibbs free energy remain constant?

5 / 50

5. For a gas compressed from 8.0 L to 3.0 L against an external pressure of 1.5 atm, what is the sign of work and its magnitude?

6 / 50

6. Which of the following pairs includes only state functions?

7 / 50

7. For an adiabatic process, what is the value of ( q )?

8 / 50

8. If the mass of a system is doubled, how does an extensive property like energy change?

9 / 50

9. What is the correct mathematical expression for pressure–volume work done by a gas at constant external pressure?

10 / 50

10. What is meant by the heat of neutralization?

11 / 50

11. A human body can be considered as which type of system?

12 / 50

12. Which of the following quantities is not a state function?

13 / 50

13. Which of the following is not a state function?

14 / 50

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

15 / 50

15. What happens to the entropy of all pure crystalline solids at 0 K according to the third law?

16 / 50

16. Which of the following correctly describes the boundary between system and surroundings?

17 / 50

17. Which of the following statements is correct about system and surroundings?

18 / 50

18. Which of the following has the greatest increase in entropy?

19 / 50

19. The standard enthalpy of combustion is defined as:

20 / 50

20. In thermodynamics, what are state variables?

21 / 50

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

22 / 50

22. Which of the following changes leads to an increase in entropy?

23 / 50

23. Which of the following substances will have the highest heat of combustion per mole?

24 / 50

24. What is an imaginary boundary in thermodynamics?

25 / 50

25. Under standard conditions, what is the activity assumed for a 1 M ideal solute?

26 / 50

26. Which of the following is a spontaneous process?

27 / 50

27. The melting of ice at 0°C and 1 atm is an example of:

28 / 50

28. What is an isolated system in thermodynamics?

29 / 50

29. What does the term ( TS ) represent in the Gibbs free energy equation?

30 / 50

30. What is the formula for Gibbs free energy?

31 / 50

31. Why is entropy (S) considered a state function?

32 / 50

32. Which of the following processes involves heat transfer but no work done?

33 / 50

33. What is the standard enthalpy of formation of an element in its most stable form at 298 K and 1 atm?

34 / 50

34. In chemistry, “standard conditions” for thermodynamic data typically refer to which set?

35 / 50

35. For liquids and solids with negligible volume change, which approximation often holds for small temperature intervals?

36 / 50

36. Which condition is necessary for a reaction to be spontaneous in the forward direction?

37 / 50

37. Which of the following conditions makes a process irreversible?

38 / 50

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

39 / 50

39. What is a reversible process in thermodynamics?

40 / 50

40. In an irreversible process, the total entropy change (system + surroundings) is always:

41 / 50

41. Which factor affects the bond enthalpy of a molecule?

42 / 50

42. Why is the third law useful in cryogenic studies (very low-temperature research)?

43 / 50

43. Which pair below includes only state functions?

44 / 50

44. For the same volume change, how does entropy change differ between reversible and irreversible expansion of a gas?

45 / 50

45. Why can the third law be used to determine absolute entropies experimentally?

46 / 50

46. Which property remains intensive when two different liquids at the same temperature and pressure are carefully layered without mixing?

47 / 50

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

48 / 50

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

49 / 50

49. Why does the absolute entropy of a perfect crystal become zero at 0 K?

50 / 50

50. The standard enthalpy of combustion of graphite is –393.5 kJ/mol, and that of CO is –283 kJ/mol. Using Hess’s law, calculate ΔH°f for CO.

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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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