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. During adiabatic expansion of an ideal gas:

2 / 30

2. When ΔG = 0, what does it signify?

3 / 30

3. If a chemical equation is multiplied by a factor n, then according to Hess’s law, ΔH becomes:

4 / 30

4. Which of the following reactions is spontaneous at constant temperature and pressure?

5 / 30

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

6 / 30

6. For a reaction with and , the process will be spontaneous when:

7 / 30

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

8 / 30

8. Which statement correctly explains why ?

9 / 30

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

10 / 30

10. Hess’s law can be applied to find the enthalpy of formation of CH₄ from which data set?

11 / 30

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

12 / 30

12. Two moles of an ideal gas are heated at constant pressure from 300 K to 500 K. If , what is the entropy change of the gas?

13 / 30

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

14 / 30

14. If a chemical reaction has ΔH = –150 kJ and ΔS = +0.1 kJ/K, what will be the sign of ΔG at 298 K?

15 / 30

15. When will a reaction with and be spontaneous?

16 / 30

16. In an open system like a steam turbine, what type of interaction occurs with surroundings?

17 / 30

17. Which statement best defines a closed system?

18 / 30

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

19 / 30

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

20 / 30

20. What are surroundings in thermodynamics?

21 / 30

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

22 / 30

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

23 / 30

23. If , which of the following statements must be true?

24 / 30

24. What is entropy a measure of?

25 / 30

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

26 / 30

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

27 / 30

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

28 / 30

28. What is meant by a state function in thermodynamics?

29 / 30

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

30 / 30

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

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

2 / 50

2. What does the third law of thermodynamics state?

3 / 50

3. What is true for a system undergoing a spontaneous process at constant temperature and pressure?

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

7. What is meant by a non-spontaneous process?

8 / 50

8. The SI unit of heat energy is:

9 / 50

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

10 / 50

10. If , which condition indicates a spontaneous process?

11 / 50

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

12 / 50

12. What is meant by the heat of dilution?

13 / 50

13. How can the third law be applied to determine the feasibility of a reaction?

14 / 50

14. What does a positive value of indicate about a process?

15 / 50

15. Which of the following statements about extensive properties is true?

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

19. Which of the following represents the correct equation for the standard heat of combustion of methane?

20 / 50

20. Which statement about enthalpy is correct?

21 / 50

21. Which of the following states of matter has the highest entropy?

22 / 50

22. Which of the following statements about absolute entropy is true?

23 / 50

23. In a closed system, 500 J of heat is supplied and the system does 200 J of work on the surroundings. What is ?

24 / 50

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

25 / 50

25. What is the thermodynamic significance of a negative ΔG value?

26 / 50

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

27 / 50

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

28 / 50

28. What is meant by the standard heat of formation (ΔH°f)?

29 / 50

29. Which of the following statements is true about spontaneity based on Gibbs free energy?

30 / 50

30. For an exothermic reaction with ΔS < 0, what determines whether it is spontaneous?

31 / 50

31. What is an isolated system in thermodynamics?

32 / 50

32. For 1 mole of an ideal gas, what is the numerical value of ?

33 / 50

33. If a system is divided into two equal halves, what happens to its total energy, assuming no interaction between the halves?

34 / 50

34. What does the term "thermodynamics" literally mean?

35 / 50

35. Which pair is correctly matched to standard conditions in this set?

36 / 50

36. Which of the following correctly represents the relationship between enthalpy and internal energy?

37 / 50

37. The change in entropy for a reversible process is given by:

38 / 50

38. Which equation represents the mathematical form of the First Law of Thermodynamics?

39 / 50

39. 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.

40 / 50

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

41 / 50

41. Which of the following is an intensive property?

42 / 50

42. The standard heat of combustion of ethane (C₂H₆) is –1560 kJ mol⁻¹. What does the negative sign indicate?

43 / 50

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

44 / 50

44. Which of the following is the best example of an open system?

45 / 50

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

46 / 50

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

47 / 50

47. What does the equation represent?

48 / 50

48. Which pair below includes only state functions?

49 / 50

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

50 / 50

50. What is a reversible process in thermodynamics?

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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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