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Class 11 Physics — Chapter 12: Thermodynamics Online Test

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Class 11 Physics: 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. The relation is called:

2 / 20

2. Maxwell’s relation expresses relationship between:

3 / 20

3. The entropy change of surroundings during a reversible adiabatic process is:

4 / 20

4. Why can no real engine achieve Carnot efficiency?

5 / 20

5. A heat engine absorbs 2000 J of heat at 500 K and rejects 1500 J at 300 K. Does it violate the Second Law?

6 / 20

6. If a refrigerator has a COP of 4, what does it mean?

7 / 20

7. The Brayton cycle is used in:

8 / 20

8. The constant in Van der Waals equation accounts for:

9 / 20

9. A 100 g piece of steam at is passed into 500 g of water at . Find the final temperature when equilibrium is reached. (Latent heat of vaporization = , ).

10 / 20

10. A heat engine absorbs from a source at and rejects to the sink. Find its efficiency.

11 / 20

11. A system absorbs of heat and performs of work. Which statement is correct?

12 / 20

12. Which law of thermodynamics introduces the concept of temperature?

13 / 20

13. Which law of thermodynamics sets the ultimate limit for the efficiency of heat engines?

14 / 20

14. Why is the Zeroth Law significant in thermodynamics?

15 / 20

15. Convert into Kelvin.

16 / 20

16. A system does of work on surroundings and its internal energy decreases by . How much heat was supplied?

17 / 20

17. If a system absorbs of heat and its internal energy increases by , how much work has the system done?

18 / 20

18. Two bodies with masses and , specific heats and , and initial temperatures and , are brought in thermal contact. The final equilibrium temperature is given by:

19 / 20

19. A resistance thermometer works on the principle that:

20 / 20

20. Two objects with heat capacities and are at 500 K and 300 K respectively. What is the final equilibrium temperature?

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Class 11 Physics: 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.

Get new questions on each attempt

  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. The gas constant has the value:

2 / 30

2. A steam turbine receives 4000 kJ of heat at 600 K and rejects 2500 kJ to a sink at 300 K. Determine the entropy change of the universe.

3 / 30

3. In an internal combustion engine, the hot source is:

4 / 30

4. A Carnot refrigerator working between 270 K and 300 K extracts 540 J of heat from the cold reservoir. Find the work input required.

5 / 30

5. A cylinder with 1 mole of a diatomic ideal gas is compressed adiabatically from 10 L to 2 L. If initial temperature is 300 K, calculate the final temperature. ()

6 / 30

6. In an adiabatic process, heat exchange is:

7 / 30

7. Which of the following statements about internal energy is correct?

8 / 30

8. Which of the following situations involves an increase in entropy?

9 / 30

9. Which statement about reversibility is correct?

10 / 30

10. In which medical application does thermodynamics play a role?

11 / 30

11. Maxwell’s relations are particularly useful because they:

12 / 30

12. Which factor must be avoided to ensure accurate calibration of thermometers?

13 / 30

13. In an isobaric process, the work done is calculated as:

14 / 30

14. A Carnot engine operates between a source at 600 K and sink at 300 K. Find its efficiency.

15 / 30

15. Which of the following is NOT an example of conservation of energy in action?

16 / 30

16. A refrigerator extracts of heat from its cold body and requires of work input. What is its coefficient of performance (COP)?

17 / 30

17. Which statement is correct about Carnot efficiency?

18 / 30

18. Which of the following processes are part of the Carnot cycle?

19 / 30

19. A gas absorbs of heat and does of work. What is the change in internal energy?

20 / 30

20. Which of the following is the reversibility criterion for a thermodynamic process?

21 / 30

21. In thermodynamic modeling, why are intensive properties (P, T, density) more useful than extensive properties?

22 / 30

22. A 500 g block of aluminum at is mixed with 200 g of water at . If and , calculate the final equilibrium temperature.

23 / 30

23. The Zeroth Law of Thermodynamics allows us to define:

24 / 30

24. Why is the ideal gas law often used in preliminary thermodynamic analysis instead of the Van der Waals equation?

25 / 30

25. In a power cycle, heat supplied is 3000 J and work obtained is 1200 J. Calculate the entropy generated if the source is at 600 K and the sink at 300 K.

26 / 30

26. Thermodynamics is primarily the study of which of the following?

27 / 30

27. In large buildings, centralized cooling systems often use:

28 / 30

28. A heat engine absorbs 2000 J of heat at 500 K and rejects 1500 J at 300 K. Does it violate the Second Law?

29 / 30

29. Which statement is correct regarding COP of real systems?

30 / 30

30. The working substance in a Carnot engine can be:

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Class 11 Physics: 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. A system undergoes adiabatic compression. What happens to its temperature?

2 / 50

2. A steam turbine receives 4000 kJ of heat at 600 K and rejects 2500 kJ to a sink at 300 K. Determine the entropy change of the universe.

3 / 50

3. Which of the following processes are part of the Carnot cycle?

4 / 50

4. In which medical application does thermodynamics play a role?

5 / 50

5. Which of the following processes has zero entropy generation?

6 / 50

6. Work in thermodynamics is defined as:

7 / 50

7. Who gave the First Law of Thermodynamics its modern form?

8 / 50

8. In a TS diagram, the area under the curve represents:

9 / 50

9. A 250 g aluminum block is heated to and then placed in 500 g of water at . If the final temperature is , calculate the specific heat of aluminum. (Specific heat of water = ).

10 / 50

10. A calorimeter of mass 150 g contains 200 g of water at . A 100 g hot solid is dropped into it, and equilibrium is reached at . If the solid was initially at and specific heat of calorimeter copper = , calculate the specific heat of the solid. (Specific heat of water = )

11 / 50

11. A gas expands adiabatically and does of work. What is the change in internal energy?

12 / 50

12. A mole of ideal gas expands isothermally at 300 K from 5 L to 10 L. Calculate the work done. (Take ).

13 / 50

13. The Van der Waals equation for real gases is:

14 / 50

14. One mole of an ideal gas at 300 K is heated at constant pressure until its volume doubles. Find the entropy change. ()

15 / 50

15. Which of the following is a path function in thermodynamics?

16 / 50

16. A system absorbs of heat and does of work. Calculate the change in internal energy.

17 / 50

17. The SI unit of internal energy is:

18 / 50

18. Why is the study of entropy important in physical sciences?

19 / 50

19. Two objects with heat capacities and are at 500 K and 300 K respectively. What is the final equilibrium temperature?

20 / 50

20. A 2 kg block of water at 300 K is mixed with 3 kg of water at 350 K in an insulated container. Find the final temperature. (Specific heat of water ).

21 / 50

21. Why is thermodynamic modeling essential in chemical engineering?

22 / 50

22. A gas absorbs of heat and its internal energy increases by . How much work did it do?

23 / 50

23. A heat pump delivers of heat to a room while consuming of work. What is the COP of the heat pump?

24 / 50

24. Which of the following is an example of a reversible process?

25 / 50

25. A heat engine operates between 1000 K and 400 K, producing 2000 J of work per cycle. Find the minimum heat absorbed.

26 / 50

26. Which statement best summarizes the relationship among ?

27 / 50

27. A Carnot heat pump operates between 300 K (inside room) and 270 K (outside). Calculate its maximum COP.

28 / 50

28. In a PV diagram, the Carnot cycle is represented by:

29 / 50

29. The relation is called:

30 / 50

30. A thermometer placed in thermal contact with a body shows a steady reading after some time. What does this indicate?

31 / 50

31. A Carnot engine rejects 1200 J of heat at 300 K and operates with 40% efficiency. Calculate the source temperature.

32 / 50

32. Which of the following fields heavily applies thermodynamic principles?

33 / 50

33. Which of the following is the Clausius statement of the Second Law?

34 / 50

34. Which component of an air conditioner circulates refrigerant between the condenser and evaporator?

35 / 50

35. Which of the following best describes the role of insulation in achieving thermal equilibrium in experiments?

36 / 50

36. Which of the following represents work transfer in thermodynamics?

37 / 50

37. A 1 kg block of iron at 400 K and a 2 kg block of water at 300 K are placed together in an insulated system. If and , the equilibrium temperature is:

38 / 50

38. A 100 g piece of steam at is passed into 500 g of water at . Find the final temperature when equilibrium is reached. (Latent heat of vaporization = , ).

39 / 50

39. For a reversible adiabatic process of an ideal gas, the relation between temperature and volume is:

40 / 50

40. The concept of reversibility in thermodynamics refers to:

41 / 50

41. The Boltzmann constant has the value:

42 / 50

42. A system absorbs of heat and performs of work. Which statement is correct?

43 / 50

43. The constant in Van der Waals equation accounts for:

44 / 50

44. An isothermal process on a PV diagram appears as:

45 / 50

45. Which of the following applications is directly based on the concept of thermal equilibrium?

46 / 50

46. A heat pump requires 500 J of work to deliver 2000 J of heat to the room. What is its COP?

47 / 50

47. Which of the following conditions must be ensured for accurate calorimetry measurement?

48 / 50

48. Which of the following is a limitation of the ideal gas law in modeling real gases?

49 / 50

49. A Carnot engine operates between a source at 600 K and sink at 300 K. Find its efficiency.

50 / 50

50. Which of the following is correct for an isothermal process involving an ideal gas?

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Practice Thermodynamics MCQs
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Class 11 Physics — Chapter 12: Thermodynamics Online Test

The Thermodynamics Online Test for Class 11 Physics is designed to help students deeply understand one of the most fundamental and concept-driven chapters in Physics. Thermodynamics connects heat, energy, and work — and forms the foundation for many advanced topics in Physics, Chemistry, and Engineering. Through this chapter-wise MCQ online test, you’ll strengthen your grasp on first law of thermodynamics, heat engines, specific heat, and Carnot’s theorem while preparing for both board and entrance exams.

These tests are based on the NCERT Class 11 Physics Chapter 12 — Thermodynamics and follow the latest CBSE pattern. Each test paper offers an interactive and time-bound experience with instant scoring and detailed answer review. Whether you’re preparing for CBSE exams, JEE, or NEET, this test helps you master every key formula, concept, and application related to thermodynamic systems and processes.

This Thermodynamics Online Test helps students build conceptual clarity through real exam-style problems. Each question is designed to test your understanding of energy transformation, cyclic processes, and heat transfer mechanisms. After every attempt, you can review your answers, identify weak areas, and reattempt to improve your score and confidence.

About this Online Test

The Thermodynamics Online Test includes three structured papers, each tailored for different learning levels. From basic laws to advanced calculations, every paper is a step toward mastering this chapter.

  • Paper 1 — Concept Foundation: 20 questions · 30 min · Pass ≥ 40%
  • Paper 2 — Mixed Practice: 30 questions · 45 min · Pass ≥ 50% · New set each attempt
  • Paper 3 — Advanced Challenge: 50 questions · 75 min · Pass ≥ 70% · Certificate after pass

Each paper is automatically evaluated and includes an answer review section. Papers 2 and 3 shuffle new MCQs every time for diverse practice, while Paper 1 remains fixed for conceptual revision.

Key Topics Covered (Thermodynamics)

  • Thermal equilibrium and Zeroth law of thermodynamics
  • Work, heat, and internal energy
  • First law of thermodynamics and its applications
  • Specific heats — Cp, Cv, and their relationship
  • Isothermal, adiabatic, cyclic, and reversible processes
  • Second law of thermodynamics and heat engines
  • Carnot cycle and efficiency of heat engines
  • Practical applications of thermodynamics in daily life

Why You Should Take This Test

Thermodynamics can feel abstract when studied theoretically, but when solved through problems, the concepts become easier and more meaningful. This online test helps you:

  • Understand energy conservation through problem-solving
  • Revise core laws and processes step by step
  • Build problem-solving confidence under time pressure
  • Track your accuracy with instant grading
  • Prepare for board, JEE, and NEET exams simultaneously

Who Should Attempt This Test

  • Class 11 CBSE/NCERT students revising Chapter 12
  • JEE and NEET aspirants aiming to master thermodynamics fundamentals
  • Students who struggle with conceptual understanding of energy and heat transfer
  • Teachers who want readymade online chapter-wise test papers

Preparation Tips for Chapter 12 — Thermodynamics

  • Understand all four laws of thermodynamics and their meanings.
  • Derive and remember relations between Cp and Cv.
  • Practice numerical questions on work done in isothermal and adiabatic processes.
  • Study the Carnot engine and efficiency formula carefully.
  • Attempt each test sequentially: start from Paper 1, and move to Paper 3 for final evaluation.

Before You Start

  • Use updated Chrome or Edge browser for smooth performance.
  • Ensure a stable internet connection during the test.
  • Do not refresh or close the tab while attempting.

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