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

2 / 30

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

3 / 30

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

4 / 30

4. 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?

5 / 30

5. What does Hess’s law state?

6 / 30

6. A diatomic ideal gas undergoes a reversible adiabatic expansion from at to . Take . What is the final pressure?

7 / 30

7. The relationship between heat ( q ), heat capacity ( C ), and temperature change is:

8 / 30

8. Which one of the following is not an extensive property?

9 / 30

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

10 / 30

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

11 / 30

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

12 / 30

12. 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?

13 / 30

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

14 / 30

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

15 / 30

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

16 / 30

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

17 / 30

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

18 / 30

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

19 / 30

19. Why is lattice enthalpy important in thermodynamics?

20 / 30

20. What is meant by molar heat capacity?

21 / 30

21. For a process with and , what will be the sign of ?

22 / 30

22. Which of the following correctly expresses the difference between molar heat capacities and ?

23 / 30

23. A closed system with adiabatic walls is compressed so that 800 J of work is done on the system. The heat transfer is zero. What is ?

24 / 30

24. One mole of a monatomic ideal gas is heated from 300 K to 500 K at constant pressure. If , what is ?

25 / 30

25. If the standard enthalpy of formation of NH₃(g) is –46 kJ mol⁻¹, what is ΔH° for the reaction ?

26 / 30

26. Which of the following correctly describes a non-spontaneous process?

27 / 30

27. Which statement correctly distinguishes intensive from extensive properties?

28 / 30

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

29 / 30

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

30 / 30

30. Which equation links the ratio of heat capacities (γ) with adiabatic processes?

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

2 / 50

2. If ΔH₁ = –393.5 kJ and ΔH₂ = –283 kJ, what is ΔH for the reaction C(s) + ½O₂(g) → CO(g)?

3 / 50

3. Which of the following correctly summarizes the third law of thermodynamics?

4 / 50

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

5 / 50

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

6 / 50

6. What is meant by an isolated system?

7 / 50

7. During an exothermic reaction at constant pressure, which of the following statements is true?

8 / 50

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

9 / 50

9. What is an open system in thermodynamics?

10 / 50

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

11 / 50

11. Hess’s law helps to determine which of the following?

12 / 50

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

13 / 50

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

14 / 50

14. Which transformation converts an extensive property into an intensive one?

15 / 50

15. If , which factor decreases Gibbs free energy the most at high temperatures?

16 / 50

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

17 / 50

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

18 / 50

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

19 / 50

19. Which of the following is an example of a spontaneous process?

20 / 50

20. Which of the following conditions makes a process irreversible?

21 / 50

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

22 / 50

22. Why is residual entropy important in applying the third law?

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

26. The melting of ice at 0°C and 1 atm is an example of:

27 / 50

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

28 / 50

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

29 / 50

29. What is the standard enthalpy of formation of an element in its most stable form at 298 K and 1 atm?

30 / 50

30. What is meant by lattice enthalpy?

31 / 50

31. What is meant by the heat of dilution?

32 / 50

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

33 / 50

33. What happens in an open system?

34 / 50

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

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

39. In Hess’s law calculations, reversing a reaction will:

40 / 50

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

41 / 50

41. When will a reaction with and be spontaneous?

42 / 50

42. Which of the following is not a closed system?

43 / 50

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

44 / 50

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

45 / 50

45. Which of the following reactions can be used to illustrate Hess’s law?

46 / 50

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

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

50. Which statement correctly explains the First Law of 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)

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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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