Class 11 Physics: Thermodynamics Online Test | Exam Bashed

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. In practice, why must a heat engine always reject some heat to a sink?

2 / 30

2. Which of the following correctly converts 0 °C into Fahrenheit?

3 / 30

3. Which of the following is an application of Maxwell’s relations?

4 / 30

4. Two objects, A and B, are in thermal equilibrium. Object B is also in thermal equilibrium with object C. According to the Zeroth Law:

5 / 30

5. Convert absolute zero (0 K) into Celsius and Fahrenheit respectively.

6 / 30

6. In heat transfer by conduction, thermal conductivity of water compared to metals is:

7 / 30

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

8 / 30

8. Which component is common in both refrigerators and heat pumps?

9 / 30

9. 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 ).

10 / 30

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

11 / 30

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

12 / 30

12. Which of the following is an application of Carnot efficiency in thermodynamic analysis?

13 / 30

13. A thermometer is placed in a liquid at . After some time, the thermometer reads . What does this indicate according to the Zeroth Law?

14 / 30

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

15 / 30

15. Entropy in thermodynamics is defined as:

16 / 30

16. The Diesel cycle differs from the Otto cycle because:

17 / 30

17. Which relation is true for a perfect gas?

18 / 30

18. A 100 g piece of metal at is dropped into 200 g of water at . Final temperature is . Calculate the specific heat of the metal. (Specific heat of water = )

19 / 30

19. A 0.5 kg ball is rolling with velocity 4 m/s. Its kinetic energy is:

20 / 30

20. In the equation , what does the term represent?

21 / 30

21. One mole of an ideal gas expands isothermally at 400 K from 2 L to 20 L. Calculate the work done and entropy change. (Take ).

22 / 30

22. The molar heat capacity at constant volume is related to specific heat by:

23 / 30

23. In power plants, thermodynamics is mainly used to:

24 / 30

24. Which among the following is not a state variable?

25 / 30

25. Which equation represents conservation of energy in the First Law of Thermodynamics?

26 / 30

26. A reversible adiabatic process for an ideal gas satisfies:

27 / 30

27. The relation connects:

28 / 30

28. If body A is in thermal equilibrium with body B, and body B with body C, then which parameter is the same for all three according to the Zeroth Law?

29 / 30

29. In calorimetry experiments, why is a calorimeter usually made of copper?

30 / 30

30. If body A is in thermal equilibrium with body B, and body B is in thermal equilibrium with body C, then which law applies?

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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

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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. Work in thermodynamics is defined as:

2 / 50

2. Which of the following is NOT a main component of a refrigerator?

3 / 50

3. Which instrument operates on the principle of thermal equilibrium?

4 / 50

4. The efficiency of a Carnot engine operating between and is:

5 / 50

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

6 / 50

6. The device that reduces pressure of the refrigerant before entering the evaporator is called:

7 / 50

7. A calorimeter contains 250 g of water at . A 100 g piece of metal at is placed in it. Final equilibrium temperature is . Find the specific heat of the metal. (Specific heat of water = ).

8 / 50

8. For an ideal gas, the ratio of specific heats is defined as:

9 / 50

9. The function of the compressor in a refrigerator is:

10 / 50

10. How many independent Maxwell’s relations exist?

11 / 50

11. 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:

12 / 50

12. Why is Kelvin scale preferred in scientific thermodynamics?

13 / 50

13. 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 ).

14 / 50

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

15 / 50

15. A container of 2 moles of ideal gas expands at constant pressure of from 0.01 m³ to 0.02 m³. Calculate the work done by the gas.

16 / 50

16. Which physical property equalizes between two systems in thermal equilibrium?

17 / 50

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

18 / 50

18. A real gas behaves most like an ideal gas under conditions of:

19 / 50

19. Internal energy of a system includes:

20 / 50

20. In practice, why can’t refrigerators or heat pumps achieve infinite COP as predicted when ?

21 / 50

21. The statistical definition of entropy was given by:

22 / 50

22. Which of the following is an application of Carnot efficiency in thermodynamic analysis?

23 / 50

23. In physical sciences, thermodynamics is significant because it:

24 / 50

24. A gas is compressed adiabatically with of work done on it. No heat exchange occurs. What is the change in internal energy?

25 / 50

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

26 / 50

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

27 / 50

27. Which thermodynamic cycle is the basis of most steam power plants?

28 / 50

28. A gas expands isothermally at 300 K from 2 L to 6 L. Calculate the work done by 1 mole of gas. (Take ).

29 / 50

29. A practical application of Maxwell’s relation in engineering is:

30 / 50

30. The practical implication of entropy increase in real thermodynamic systems is:

31 / 50

31. Which equation represents conservation of energy in the First Law of Thermodynamics?

32 / 50

32. A body of mass 1 kg is thrown vertically upwards with velocity 20 m/s. Ignoring air resistance, what maximum height will it reach? (Take ).

33 / 50

33. Why is the Zeroth Law called “zeroth” and not the fourth law?

34 / 50

34. A Carnot engine works between a hot reservoir at 900 K and a cold reservoir at 300 K. If it absorbs 1800 J of heat, how much heat is rejected?

35 / 50

35. A refrigerator absorbs 1200 J of heat from the cold reservoir and requires 400 J of work input. Find its COP.

36 / 50

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

37 / 50

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

38 / 50

38. In refrigeration systems, entropy analysis helps to:

39 / 50

39. Which condition must hold true for a process to be reversible?

40 / 50

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

41 / 50

41. Which cycle is used as a practical alternative to Carnot in gas turbine power plants?

42 / 50

42. Which of the following is an intensive property among state variables?

43 / 50

43. In Boltzmann’s entropy formula, represents:

44 / 50

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

45 / 50

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

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 factor must be avoided to ensure accurate calibration of thermometers?

48 / 50

48. In a thermal power plant, the concept of entropy helps engineers:

49 / 50

49. A system absorbs 500 J of heat and does no work. What is the change in internal energy?

50 / 50

50. A gas at constant pressure of expands from 0.01 m³ to 0.03 m³. Calculate the work done.

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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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