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. In thermodynamics, what is meant by heat?

2 / 30

2. Which process among the following involves heat exchange with surroundings?

3 / 30

3. Using the data of question 385, if the initial temperature is 300 K, what is the final temperature?

4 / 30

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

5 / 30

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

6 / 30

6. Which of the following is the correct expression of Hess’s law?

7 / 30

7. For a monatomic ideal gas, if , what is ?

8 / 30

8. Which of the following statements about isolated systems is incorrect?

9 / 30

9. Which of the following best explains why density is intensive while mass is extensive?

10 / 30

10. Which property cannot be determined without the third law of thermodynamics?

11 / 30

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

12 / 30

12. Why is lattice enthalpy important in thermodynamics?

13 / 30

13. In thermodynamics, what are state variables?

14 / 30

14. At 298 K, the equilibrium constant for a reaction is . What is ?

15 / 30

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

16 / 30

16. For an ideal gas with at 300 K, what is and ?

17 / 30

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

18 / 30

18. What is the mathematical expression for work done during expansion or compression of a gas at constant external pressure?

19 / 30

19. Which of the following is an application of Hess’s law?

20 / 30

20. What is the thermodynamic definition of enthalpy H?

21 / 30

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

22 / 30

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

23 / 30

23. The surface separating gas inside a balloon from the external air is a:

24 / 30

24. Which of the following is an irreversible process?

25 / 30

25. Which of the following has the lowest lattice enthalpy?

26 / 30

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

27 / 30

27. What is an intensive property in thermodynamics?

28 / 30

28. What is meant by lattice enthalpy?

29 / 30

29. If 500 J of heat raises the temperature of a metal block by 10 K, what is its heat capacity?

30 / 30

30. What is meant by the term heat of hydration?

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

2 / 50

2. What is meant by the heat of solution?

3 / 50

3. When concentrated sulfuric acid is diluted with water, the process is highly exothermic. What safety precaution should be followed?

4 / 50

4. The universe as a whole is considered an isolated system because:

5 / 50

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

6 / 50

6. The heat of solution of NH₄NO₃ in water is positive because:

7 / 50

7. Internal energy (U) is considered a state function because:

8 / 50

8. Which of the following is true according to Hess’s law?

9 / 50

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

10 / 50

10. For a closed system, the first law is written as:

11 / 50

11. 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?

12 / 50

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

13 / 50

13. When one mole of ideal gas is heated at constant volume from to , the relation between and is:

14 / 50

14. For a reaction at 298 K with and , what is ?

15 / 50

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

16 / 50

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

17 / 50

17. What is the main difference between a real and imaginary boundary?

18 / 50

18. Which of the following is an example of work done by a thermodynamic system?

19 / 50

19. The process of dissolving anhydrous CuSO₄ in water is accompanied by:

20 / 50

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

21 / 50

21. 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?

22 / 50

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

23 / 50

23. At constant pressure, the change in enthalpy (ΔH) equals:

24 / 50

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

25 / 50

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

26 / 50

26. Which condition must be true for ΔH°rxn to represent the standard enthalpy change?

27 / 50

27. The rest of the universe excluding the system is called:

28 / 50

28. What does the symbol ( G ) represent in thermodynamics?

29 / 50

29. Which of the following statements correctly describes work in thermodynamics?

30 / 50

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

31 / 50

31. Which of the following is a major application of the third law of thermodynamics?

32 / 50

32. Which of the following conditions leads to zero pressure–volume work?

33 / 50

33. Which of the following processes can be better understood using the third law of thermodynamics?

34 / 50

34. What is meant by a boundary in thermodynamics?

35 / 50

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

36 / 50

36. A process in which heat absorbed by the system is used entirely to do work results in:

37 / 50

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

38 / 50

38. A sealed metal container of gas is heated on a flame. Which description fits the boundary and transfers?

39 / 50

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

40 / 50

40. Which of the following pairs of molecules shows greater stability based on bond enthalpy?

41 / 50

41. Which of the following quantities is a state function related to the First Law?

42 / 50

42. If a system does no work but absorbs 250 J of heat, what is ?

43 / 50

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

44 / 50

44. Which of the following statements about system and surroundings is false?

45 / 50

45. Which of the following is true for entropy at absolute zero according to the third law?

46 / 50

46. For a pure liquid, density is classified as which type of property?

47 / 50

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

48 / 50

48. What is meant by a spontaneous process?

49 / 50

49. What is meant by the heat of dilution?

50 / 50

50. In thermodynamics, what is meant by heat?

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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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