Exam-Style Online Test | Class 11 Chemistry: Thermodynamics

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

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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 combustion of a substance?

2 / 30

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

3 / 30

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

4 / 30

4. Why is the bond enthalpy of O=O lower than that of N≡N?

5 / 30

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

6 / 30

6. Which device operates based primarily on heat transfer between two bodies?

7 / 30

7. What are extensive properties in thermodynamics?

8 / 30

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

9 / 30

9. What is meant by the heat of neutralization?

10 / 30

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

11 / 30

11. The third law of thermodynamics helps explain which experimental observation?

12 / 30

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

13 / 30

13. What is meant by a boundary in thermodynamics?

14 / 30

14. 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?

15 / 30

15. What is the general thermodynamic criterion for spontaneity of a process at constant temperature and pressure?

16 / 30

16. Which of the following is a spontaneous process at room temperature?

17 / 30

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

18 / 30

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

19 / 30

19. Why are standard enthalpies of reaction important in chemistry?

20 / 30

20. A system defined by an imaginary boundary is often used when:

21 / 30

21. For a gas expansion where the system does 200 J of work and absorbs 500 J of heat, what is ?

22 / 30

22. When work is done on the system by the surroundings, its sign according to the chemistry convention is:

23 / 30

23. When a gas expands reversibly and isothermally, the work done can be expressed as:

24 / 30

24. Which of the following is an example where an imaginary boundary is most useful?

25 / 30

25. Which of the following is the best example of an isolated system?

26 / 30

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

27 / 30

27. During adiabatic expansion of an ideal gas:

28 / 30

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

29 / 30

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

30 / 30

30. Which of the following is a non-spontaneous 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 surface separating gas inside a balloon from the external air is a:

2 / 50

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

3 / 50

3. In thermodynamics, what is meant by heat?

4 / 50

4. Which of the following statements correctly describes entropy?

5 / 50

5. 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.

6 / 50

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

7 / 50

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

8 / 50

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

9 / 50

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

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

13. In a gas cylinder with a movable piston, the piston surface acts as which type of boundary?

14 / 50

14. In which way does the third law assist in determining chemical equilibrium constants?

15 / 50

15. If , which condition indicates a spontaneous process?

16 / 50

16. When a system does 250 J of work on surroundings and absorbs 150 J of heat, what is the change in its internal energy?

17 / 50

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

18 / 50

18. What is meant by bond enthalpy?

19 / 50

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

20 / 50

20. Which property is necessarily constant for any closed system undergoing any process?

21 / 50

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

22 / 50

22. What is the term used for the remaining entropy in a substance due to disorder at 0 K?

23 / 50

23. What is meant by the heat of combustion of a substance?

24 / 50

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

25 / 50

25. Which of the following equations relates Gibbs free energy to maximum work?

26 / 50

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

27 / 50

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

28 / 50

28. What is meant by the heat of neutralization?

29 / 50

29. Which statement about standard state for a gas is correct in this context?

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

33. For a reaction in which the number of moles of gas decreases, what is the relation between ΔH and ΔU?

34 / 50

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

35 / 50

35. Which of the following is an extensive property?

36 / 50

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

37 / 50

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

38 / 50

38. What happens to entropy when ice melts into water at 0°C?

39 / 50

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

40 / 50

40. One mole of an ideal gas is heated in a closed, rigid container from to . What is the boundary work (W)?

41 / 50

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

42 / 50

42. The standard enthalpy of combustion of hydrogen is:

43 / 50

43. Which of the following is an irreversible process?

44 / 50

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

45 / 50

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

46 / 50

46. What is meant by heat capacity of a substance?

47 / 50

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

48 / 50

48. The equation is valid for:

49 / 50

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

50 / 50

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

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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.
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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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