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

2 / 30

2. What is the absolute entropy of a perfect crystalline solid at 0 K?

3 / 30

3. Which statement correctly describes state and path functions?

4 / 30

4. What is an open system in thermodynamics?

5 / 30

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

6 / 30

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

7 / 30

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

8 / 30

8. A gas expands in a cylinder doing 400 J of work while losing 150 J of heat. What is ?

9 / 30

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

10 / 30

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

11 / 30

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

12 / 30

12. Why do polyatomic molecules have average bond enthalpies instead of specific ones?

13 / 30

13. What is meant by a thermodynamic system?

14 / 30

14. What is an imaginary boundary in thermodynamics?

15 / 30

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

16 / 30

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

17 / 30

17. 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?

18 / 30

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

19 / 30

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

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

23. A gas expands from 4.0 L to 10.0 L against a constant external pressure of 2.0 atm. What is the work done by the gas?

24 / 30

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

25 / 30

25. Why does an imperfect crystal have nonzero entropy at 0 K?

26 / 30

26. Two identical containers each hold the same gas at 300 K and 1 atm. If they are combined into one larger container without heat exchange and without changing temperature, which statement is correct?

27 / 30

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

28 / 30

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

29 / 30

29. What is meant by molar heat capacity?

30 / 30

30. Three moles of a gas with temperature-independent are heated from 300 K to 350 K at constant pressure. What is ?

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

2 / 50

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

3 / 50

3. Which relation correctly connects enthalpy and internal energy changes at constant pressure for a gas process?

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

8. Which of the following represents a decrease in entropy?

9 / 50

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

10 / 50

10. Which statement about path and state functions is correct?

11 / 50

11. When NaOH pellets dissolve in water, the beaker becomes hot because:

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

15. Which of the following statements about open systems is correct?

16 / 50

16. Why is lattice enthalpy important in thermodynamics?

17 / 50

17. What happens in an open system?

18 / 50

18. What is an isolated system in thermodynamics?

19 / 50

19. What determines whether a boundary allows transfer of matter or energy?

20 / 50

20. What is the absolute entropy of a perfect crystalline solid at 0 K?

21 / 50

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

22 / 50

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

23 / 50

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

24 / 50

24. What does the ratio represent?

25 / 50

25. Which of the following statements about entropy in reversible and irreversible processes is correct?

26 / 50

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

27 / 50

27. Which statement about enthalpy is correct?

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

33. Which of the following equations represents a heat of neutralization reaction?

34 / 50

34. Which statement best explains the relationship between lattice enthalpy and ionic stability?

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

39. Which expression links enthalpy change of an ideal gas to temperature at constant pressure?

40 / 50

40. Which of the following statements about lattice enthalpy is correct?

41 / 50

41. In thermodynamics, what is meant by heat?

42 / 50

42. The equation is valid for:

43 / 50

43. The heat of atomization of water is the energy required for which transformation?

44 / 50

44. In thermodynamics, what are state variables?

45 / 50

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

46 / 50

46. What is meant by an adiabatic process?

47 / 50

47. What is meant by an isolated system?

48 / 50

48. 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.

49 / 50

49. Which pair below includes only state functions?

50 / 50

50. Which statement correctly explains the First Law of Thermodynamics?

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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)

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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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