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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

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

2 / 30

2. In an isothermal reversible expansion of an ideal gas, the expression for work is:

3 / 30

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

4 / 30

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

5 / 30

5. What does the superscript “°” in ΔH° or ΔG° signify?

6 / 30

6. Which statement best summarizes Hess’s law?

7 / 30

7. Which of the following processes is spontaneous at high temperatures but not at low temperatures?

8 / 30

8. What does Hess’s law state?

9 / 30

9. What is meant by a spontaneous process?

10 / 30

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

11 / 30

11. 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)?

12 / 30

12. Which statement correctly distinguishes intensive from extensive properties?

13 / 30

13. Which statement correctly explains why ?

14 / 30

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

15 / 30

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

16 / 30

16. For a closed system at constant pressure, the heat exchanged is related to enthalpy by which expression?

17 / 30

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

18 / 30

18. Which of the following statements is true about spontaneous processes?

19 / 30

19. Which of the following is true about heat and work?

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

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

24 / 30

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

25 / 30

25. In thermodynamics, what are state variables?

26 / 30

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

27 / 30

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

28 / 30

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

29 / 30

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

30 / 30

30. 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?

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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 the third law essential in defining the entropy scale?

2 / 50

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

3 / 50

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

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

7. Which of the following statements about standard enthalpy of reaction is correct?

8 / 50

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

9 / 50

9. What is enthalpy (H) defined as in thermodynamics?

10 / 50

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

11 / 50

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

12 / 50

12. Which statement best defines a closed system?

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

17. During adiabatic expansion of an ideal gas:

18 / 50

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

19 / 50

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

20 / 50

20. Which of the following statements best explains the third law of thermodynamics?

21 / 50

21. What is the relationship between Gibbs free energy, enthalpy, and entropy?

22 / 50

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

23 / 50

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

24 / 50

24. Which of the following is a non-spontaneous process?

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

29. What does the superscript “°” in ΔH° or ΔG° signify?

30 / 50

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

31 / 50

31. Which of the following is an important use of Hess’s law?

32 / 50

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

33 / 50

33. What is an imaginary boundary in thermodynamics?

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

37. Which of the following molecules is the least stable based on bond enthalpy values?

38 / 50

38. What is meant by a boundary in thermodynamics?

39 / 50

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

40 / 50

40. For a process with ΔH = –200 kJ and ΔS = –0.3 kJ/K, when is the process spontaneous?

41 / 50

41. Why is greater than for gases?

42 / 50

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

43 / 50

43. What does the ratio represent?

44 / 50

44. Which of the following equations correctly represents the standard enthalpy of formation of ammonia?

45 / 50

45. In a reaction where Δn = 0 (no change in moles of gas), what can be said about ΔH and ΔU?

46 / 50

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

47 / 50

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

48 / 50

48. What is the thermodynamic definition of enthalpy H?

49 / 50

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

50 / 50

50. Why is internal energy considered an extensive property?

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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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