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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. The method commonly used in laboratories to measure specific heat capacity is:

2 / 30

2. A gas at has pressure . If temperature is increased to at constant volume, what will be the final pressure?

3 / 30

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

4 / 30

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

5 / 30

5. A reservoir at 500 K supplies 2000 J of heat to a reversible engine. Calculate the entropy change of the reservoir.

6 / 30

6. Which condition must be satisfied for a process to be called isentropic?

7 / 30

7. Which refrigerant was widely used in older air conditioners but phased out due to ozone depletion?

8 / 30

8. Why is Carnot’s theorem important in thermodynamic analysis?

9 / 30

9. For an ideal gas undergoing an isothermal expansion, entropy change can be expressed as:

10 / 30

10. Why is thermodynamic modeling essential in chemical engineering?

11 / 30

11. A heat engine receives of heat and performs of work. What is the heat rejected to the sink?

12 / 30

12. In a reversible isothermal process, the entropy change of an ideal gas is:

13 / 30

13. Which of the following is an intensive property in thermodynamics?

14 / 30

14. The Third Law of Thermodynamics states that:

15 / 30

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

16 / 30

16. In combined-cycle power plants, entropy analysis is used to:

17 / 30

17. Which of the following is an application of calorimetry in real life?

18 / 30

18. In a Rankine cycle, the component that converts liquid water into high-pressure steam is:

19 / 30

19. Which principle is the basis of calorimetry?

20 / 30

20. The SI unit of pressure is:

21 / 30

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

22 / 30

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

23 / 30

23. Which scientist introduced the concept of entropy?

24 / 30

24. The Zeroth Law is significant because it:

25 / 30

25. Which statement about entropy in statistical mechanics is correct?

26 / 30

26. The evaporator in a refrigerator works as:

27 / 30

27. The efficiency of a Carnot engine between 800 K and 300 K is:

28 / 30

28. Why is the Carnot cycle not practically achievable?

29 / 30

29. A heat engine absorbs of heat and rejects to the sink. Find its efficiency.

30 / 30

30. Convert into Kelvin.

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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. One mole of an ideal gas is taken from 300 K, 2 atm to 600 K, 4 atm reversibly. Find the entropy change. (Take ).

2 / 50

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

3 / 50

3. Entropy change of the universe in an irreversible process is:

4 / 50

4. Why is Kelvin scale preferred in scientific thermodynamics?

5 / 50

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

6 / 50

6. Why is calibration of thermometers necessary?

7 / 50

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

8 / 50

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

9 / 50

9. Which mathematical property makes Maxwell’s relations possible?

10 / 50

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

11 / 50

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

12 / 50

12. Entropy change of the universe in a reversible process is:

13 / 50

13. 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?

14 / 50

14. Convert normal human body temperature into Celsius.

15 / 50

15. A metal rod of length 1 m and cross-sectional area has thermal conductivity . If its ends are maintained at and , the rate of heat conduction is:

16 / 50

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

17 / 50

17. Which gas deviates least from ideal behavior?

18 / 50

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

19 / 50

19. How many independent Maxwell’s relations exist?

20 / 50

20. The Carnot cycle consists of which processes?

21 / 50

21. A resistance thermometer works on the principle that:

22 / 50

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

23 / 50

23. Which of the following processes is practically irreversible?

24 / 50

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

25 / 50

25. In a calorimeter experiment, a hot solid of mass 100 g at is dropped into 200 g of water at . If the final equilibrium temperature is , calculate the specific heat of the solid. (Specific heat of water = ).

26 / 50

26. The SI unit of specific heat capacity is:

27 / 50

27. Which of the following represents the efficiency of a heat engine?

28 / 50

28. A sample of 1 mole of oxygen behaves like a diatomic ideal gas. If , calculate .

29 / 50

29. A sample of gas has volume , pressure , temperature . Calculate the number of moles. (Take ).

30 / 50

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

31 / 50

31. Why can’t all absorbed heat energy be converted into work in energy conversion devices?

32 / 50

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

33 / 50

33. A Carnot engine works between 800 K and 400 K. Its efficiency is:

34 / 50

34. A 500 g block of unknown metal is heated to and placed in 200 g of water at . Final temperature becomes . Find the specific heat of the metal. (Specific heat of water = ).

35 / 50

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

36 / 50

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

37 / 50

37. Which statement best summarizes the applications of Carnot efficiency?

38 / 50

38. Which of the following is an isolated system?

39 / 50

39. The ideal gas law is expressed as:

40 / 50

40. For a monoatomic ideal gas, what is the value of ?

41 / 50

41. In an air conditioning system, the evaporator coil is responsible for:

42 / 50

42. A Carnot engine operates between and . If the engine delivers 1200 J of work per cycle, calculate the heat absorbed .

43 / 50

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

44 / 50

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

45 / 50

45. Why is the Carnot engine considered an "ideal engine"?

46 / 50

46. Which thermodynamic device is most directly linked to refrigeration and air conditioning systems?

47 / 50

47. 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?

48 / 50

48. Convert into Kelvin.

49 / 50

49. Which of the following is true for internal energy?

50 / 50

50. Why is Kelvin preferred in scientific thermodynamics over Celsius or Fahrenheit?

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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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