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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.

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

2 / 30

2. Which property is NOT a thermodynamic state variable?

3 / 30

3. A 0.1 kg piece of iron at is placed in 0.2 kg water at . If and , the final equilibrium temperature is:

4 / 30

4. What is the First Law of Thermodynamics also known as?

5 / 30

5. Which Maxwell relation connects entropy with volume and pressure with temperature?

6 / 30

6. Entropy change for mixing two different ideal gases is:

7 / 30

7. A system does of work on surroundings and its internal energy decreases by . What is the heat exchange?

8 / 30

8. The entropy of the universe during a reversible cycle:

9 / 30

9. Which modern technology improves the efficiency of air conditioners and climate control systems?

10 / 30

10. Which of the following is NOT considered a thermodynamic system?

11 / 30

11. In a PV diagram, the area under the curve represents:

12 / 30

12. In thermodynamic modeling, why is it important to identify state variables (P, V, T, U, H)?

13 / 30

13. A cylinder contains 2 moles of an ideal gas at 300 K. Using the ideal gas law, calculate the pressure if the volume is 5 L. (Take ).

14 / 30

14. The Otto cycle is the idealized cycle for:

15 / 30

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

16 / 30

16. What is the entropy change when 1000 J of heat is absorbed reversibly at 500 K?

17 / 30

17. The work output of a Carnot cycle is equal to:

18 / 30

18. Two bodies A and B, with heat capacities and , are initially at and . If they are placed in contact in an isolated system, the final equilibrium temperature is:

19 / 30

19. When an ice cube is placed in a glass of water, the system reaches thermal equilibrium when:

20 / 30

20. A bullet of mass 0.02 kg is moving at 200 m/s. What is its kinetic energy?

21 / 30

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

22 / 30

22. One mole of a diatomic ideal gas () is compressed adiabatically from 10 L at 300 K to 5 L. Find the final temperature.

23 / 30

23. A 0.5 kg copper block at is placed in contact with a 1 kg aluminum block at . If and , the final equilibrium temperature is:

24 / 30

24. One mole of diatomic ideal gas at has internal energy: (Take ).

25 / 30

25. The historical development of thermodynamics was mainly driven by:

26 / 30

26. A steam turbine receives steam at 500 °C and exhausts it at 40 °C. If Carnot efficiency is 61%, the actual turbine efficiency is usually:

27 / 30

27. Which of the following is a state variable in thermodynamics?

28 / 30

28. Two objects in thermal contact are said to be in equilibrium when:

29 / 30

29. The significance of the Carnot engine in thermodynamics is that:

30 / 30

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

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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!

Earn a certificate upon passing

Get new questions with every attempt

  • 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 statistical interpretation of entropy significant?

2 / 50

2. Why is the concept of thermal equilibrium important in defining temperature?

3 / 50

3. A system of 1 mole of ideal gas expands from 2 L to 4 L at 300 K reversibly. Calculate entropy change. (Take )

4 / 50

4. Which property is extensive in thermodynamics?

5 / 50

5. Which statement is true for all heat engines?

6 / 50

6. A Carnot engine absorbs 1000 J of heat from a reservoir at 600 K and rejects heat to a sink at 300 K. How much work is produced?

7 / 50

7. The entropy of the universe during a reversible cycle:

8 / 50

8. The Celsius scale is calibrated such that:

9 / 50

9. The Second Law of Thermodynamics introduces the concept of:

10 / 50

10. A Carnot engine has efficiency 40% when operating between 500 K and . Find the sink temperature.

11 / 50

11. If 2 moles of an ideal monoatomic gas are heated at constant volume from to , the change in internal energy is:

12 / 50

12. Why can no heat engine have 100% efficiency?

13 / 50

13. Which of the following phenomena illustrates the Second Law?

14 / 50

14. Which condition is essential for a thermometer to correctly measure body temperature?

15 / 50

15. In a TS diagram, the cycle efficiency can be calculated as:

16 / 50

16. 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 = ).

17 / 50

17. Two objects in thermal contact are said to be in equilibrium when:

18 / 50

18. What does the Zeroth Law of Thermodynamics state?

19 / 50

19. A resistance thermometer works on the principle that:

20 / 50

20. Which quantity remains constant in an isothermal process?

21 / 50

21. What is the entropy change when 1000 J of heat is absorbed reversibly at 500 K?

22 / 50

22. Which of the following is an isolated system?

23 / 50

23. On a PV diagram, which cycle appears as a rectangle?

24 / 50

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

25 / 50

25. A gas is compressed by doing of work on it. During compression, the gas loses of heat to the surroundings. What is the change in internal energy?

26 / 50

26. In an isothermal process, which parameter remains constant?

27 / 50

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

28 / 50

28. A piece of iron of mass 500 g at is dropped into 200 g of water at . If and , the equilibrium temperature is closest to:

29 / 50

29. 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.

30 / 50

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

31 / 50

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

32 / 50

32. Which of the following processes has zero change in entropy?

33 / 50

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

34 / 50

34. The work output of a Carnot cycle is equal to:

35 / 50

35. A 200 g block of copper at is placed in 100 g of water at . If the specific heat of copper is and water is , the equilibrium temperature is approximately:

36 / 50

36. A refrigerator removes of heat from its cold compartment and rejects of heat to the surroundings. How much work input is required?

37 / 50

37. In thermodynamics, which of the following is a path function?

38 / 50

38. Which of the following is true for an adiabatic process?

39 / 50

39. A 2 kg block of copper () is heated from to . How much heat is absorbed?

40 / 50

40. Which property is NOT a thermodynamic state variable?

41 / 50

41. How many independent Maxwell’s relations exist?

42 / 50

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

43 / 50

43. Which of the following best explains the First Law of Thermodynamics?

44 / 50

44. Which statement about reversibility is correct?

45 / 50

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

46 / 50

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

47 / 50

47. A Carnot engine operates between 600 K and 300 K. If it absorbs 1200 J of heat, how much work does it deliver?

48 / 50

48. A refrigerator transfers heat from 270 K space to 300 K surroundings. Which law governs this requirement of external work?

49 / 50

49. A refrigerator absorbs 600 J of heat from the cold space and rejects 800 J to the surroundings. Find its COP.

50 / 50

50. Why is the Carnot cycle not practically achievable?

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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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