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Class 11 Physics — Chapter 11: Thermal Properties of Matter Online Test

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Class 11 Physics: Thermal Properties of Matter 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. A blackbody emits maximum radiation at wavelength . Calculate the temperature of the blackbody.

2 / 20

2. How do detergents remove oil and grease stains from clothes?

3 / 20

3. A soil pore of radius retains water with surface tension . Calculate height of capillary rise ().

4 / 20

4. A cavitation bubble of radius in water has surface tension . Find excess pressure inside.

5 / 20

5. A soap bubble of radius has surface tension . Find the excess pressure inside it.

6 / 20

6. If the angle of contact , what will be the value of ?

7 / 20

7. A cubic centimeter of water splits into spherical droplets. If surface tension of water is , estimate the increase in surface energy. (Take density = ).

8 / 20

8. Which of the following is NOT an example of capillary action?

9 / 20

9. Which of the following is the correct statement of Bernoulli’s principle?

10 / 20

10. What does a Reynolds number greater than 3000 usually indicate?

11 / 20

11. For water at (), flowing at in a pipe of diameter , calculate .

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12. A submarine moves at in seawater (). If its length is , calculate Reynolds number.

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13. Water of density flows with velocity in a pipe of diameter . If viscosity is , calculate the Reynolds number.

14 / 20

14. Oil of density and viscosity flows through a pipe of diameter at velocity . Calculate Reynolds number.

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15. A water droplet of radius falls through air. If viscosity of air is and density of water is , while air density is , find its terminal velocity.

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16. A pollen grain of radius has density . If it falls in air (), calculate its terminal velocity. ()

17 / 20

17. In sedimentation analysis, particle size can be determined by measuring:

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18. A dust particle of radius and density settles in air of viscosity . Find its terminal velocity. ()

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19. If the atmospheric pressure is of Hg, the corresponding pressure in Pascal is approximately:

20 / 20

20. What happens to atmospheric pressure as altitude increases?

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Class 11 Physics: Thermal Properties of Matter 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. Pascal’s law states that:

2 / 30

2. A capillary tube of radius is dipped in water (). Find the height of water rise.

3 / 30

3. A pollen grain of radius has density . If it falls in air (), calculate its terminal velocity. ()

4 / 30

4. Why do large raindrops deviate from perfect spherical shape as they fall?

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5. In Jaeger’s bubble pressure method, the maximum pressure required to form a bubble of radius at the tip of a tube is given by:

6 / 30

6. Why do detergents produce foam while cleaning?

7 / 30

7. According to Stokes’ law, the viscous force on a small sphere moving with velocity through a fluid is:

8 / 30

8. Which of the following liquids has the highest viscosity at room temperature?

9 / 30

9. Why does kerosene rise higher in a thin wick compared to a thick wick in an oil lamp?

10 / 30

10. Why does detergent reduce the surface tension of water?

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11. The spreading coefficient of a liquid on a solid is defined as:

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12. The effect of pressure on the viscosity of liquids is:

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13. Which principle is used in the working of an Ostwald viscometer?

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14. Which of the following best summarizes the significance of the Venturi effect in engineering?

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15. Which of the following instruments is commonly used to measure atmospheric pressure?

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16. Sedimentation method for particle size determination is particularly useful for:

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17. In the derivation of Bernoulli’s equation, pressure energy per unit volume is expressed as:

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18. Air of density flows over a flat plate of length with velocity . If viscosity of air is , calculate Reynolds number.

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19. Which of the following is a common misconception about Bernoulli’s principle?

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20. In hydraulic brakes, why must air be completely removed from the brake fluid?

21 / 30

21. Which type of soil retains more water due to capillarity?

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22. Which of the following correctly pairs liquid–solid systems with their angle of contact?

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23. Pure water has a surface tension of about at room temperature. When detergent is added, the surface tension reduces to . By what percentage has the surface tension decreased?

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24. Why can terminal velocity never be reached in vacuum?

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25. Why is thermal conductivity important in everyday appliances?

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26. What happens to the acceleration of a particle as it approaches terminal velocity?

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27. How can angle of contact be experimentally measured?

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28. Which of the following best describes the condition for terminal velocity mathematically?

29 / 30

29. Which law gives the relationship between viscous force and velocity gradient in a liquid?

30 / 30

30. Which of the following is a technological application of wetting and spreading phenomena?

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Class 11 Physics: Thermal Properties of Matter 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. Why are gaps left between concrete slabs on roads and pavements?

2 / 50

2. If the angle of contact , what is the value of ?

3 / 50

3. Two points are located at depths and in water. What is the pressure difference between them?

4 / 50

4. Which statement best summarizes the effect of temperature on surface tension?

5 / 50

5. Why is Stokes’ law used in determining viscosity of fluids using sedimentation?

6 / 50

6. What does a Reynolds number greater than 3000 usually indicate in pipe flow?

7 / 50

7. Why does detergent reduce the surface tension of water?

8 / 50

8. A tank is filled with water up to a height of . Find the pressure at the bottom of the tank due to water column. (Take ).

9 / 50

9. Which of the following correctly pairs liquid–solid systems with their angle of contact?

10 / 50

10. Water of viscosity flows in a pipe of diameter . If density is and , calculate the critical velocity.

11 / 50

11. Which property is unique to gases compared to liquids?

12 / 50

12. Sedimentation rate of a particle in fluid is directly proportional to:

13 / 50

13. A liquid of density is filled in a container to a depth of . Calculate the hydrostatic pressure at the bottom. ()

14 / 50

14. Which of the following is a common misconception about Bernoulli’s principle?

15 / 50

15. A spherical drop of water of radius splits into identical small drops. Calculate the increase in surface energy if surface tension of water = .

16 / 50

16. Which device is commonly used to measure the pressure of a gas in a closed container?

17 / 50

17. Why is Reynolds number significant in aerodynamics?

18 / 50

18. Two soap bubbles of radii and are connected by a tube. Air flows from:

19 / 50

19. What type of barometer uses the principle of elastic deformation of a sealed metal chamber?

20 / 50

20. Why are detergents more effective in hard water than soaps?

21 / 50

21. A copper calorimeter contains of water at . When of steam at is condensed into it, find final temperature. (copper , water , latent heat of vaporization ).

22 / 50

22. Which of the following best summarizes the interpretation of Reynolds number values?

23 / 50

23. The excess pressure inside a gas bubble of radius in water () is:

24 / 50

24. Which device directly uses the Venturi effect to measure fluid flow?

25 / 50

25. Which of the following is a practical application of barometric pressure?

26 / 50

26. Why does water spread easily on a clean glass surface?

27 / 50

27. Which of the following equations relates work done in increasing surface area by ?

28 / 50

28. What type of meniscus is formed when angle of contact is acute ()?

29 / 50

29. If Reynolds number in a chemical reactor is very high, what does it signify?

30 / 50

30. The pressure at the bottom of a liquid column is given by:

31 / 50

31. A hydraulic lift has a mechanical advantage of 50. If a person applies a force of 200 N on the small piston, what is the load lifted?

32 / 50

32. If adhesive and cohesive forces are equal, what will be the angle of contact?

33 / 50

33. A dam is 25 m high. If water density is , what is the pressure exerted at the bottom of the dam?

34 / 50

34. Which of the following is assumed negligible in Stokes’ law?

35 / 50

35. Two containers of different shapes are filled with the same liquid up to the same depth. The pressure at the bottom of both containers will be:

36 / 50

36. A rod of length , cross-sectional area , and thermal conductivity is conducting a steady heat current of . Find the temperature difference between its ends.

37 / 50

37. Which of the following is an advantage of hydraulic brakes in automobiles?

38 / 50

38. The thermal conductivity of copper is . A copper rod of length and area is maintained at at one end and at the other. Find the rate of heat conduction.

39 / 50

39. The effect of pressure on the viscosity of liquids is:

40 / 50

40. A 500 g block of copper at is placed in 1 kg of water at . If specific heat of copper = 400 J/kgK, water = 4200 J/kgK, find final equilibrium temperature.

41 / 50

41. Why does a paintbrush with fine bristles hold water when dipped?

42 / 50

42. Which statement best summarizes the role of detergents in reducing surface tension?

43 / 50

43. The hydrostatic pressure at the bottom of a swimming pool of depth 2 m (density of water = ) is:

44 / 50

44. Why does mercury not spread on glass but form spherical drops instead?

45 / 50

45. Which of the following liquids shows the most noticeable decrease in surface tension with temperature?

46 / 50

46. Which law gives the relationship between viscous force and velocity gradient in a liquid?

47 / 50

47. A mountain climber finds that the barometric pressure has dropped to of Hg from the normal . Estimate the altitude gained. (Density of Hg = ).

48 / 50

48. A capillary tube of radius is dipped in water (). Find the height of water rise.

49 / 50

49. Which of the following best represents a real-life example of turbulent flow?

50 / 50

50. The excess pressure inside a soap bubble of radius and surface tension is:

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Practice Thermal Properties of Matter MCQs
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Class 11 Physics — Chapter 11: Thermal Properties of Matter Online Test

The Thermal Properties of Matter Online Test for Class 11 Physics helps students understand how heat affects the physical properties of substances. This chapter is all about learning the science behind expansion, temperature measurement, heat transfer, and change of state. Many students read the formulas but struggle when it comes to applying them in numerical problems. This test is made to solve exactly that issue — through exam-style MCQs that strengthen your logic and speed.

These online tests are fully based on the NCERT Class 11 Physics Chapter 11 — Thermal Properties of Matter and follow the latest CBSE syllabus. The test papers are interactive, time-bound, and auto-checked. Whether you are revising for school exams or preparing for JEE and NEET Physics, this chapter-wise test will make concepts like specific heat capacity, calorimetry, thermal expansion, and heat transfer crystal clear.

Students often find thermal physics tricky because it mixes theory with mathematical reasoning. This Thermal Properties of Matter Online Test helps you develop both conceptual clarity and numerical accuracy. Every time you attempt, you will gain a better sense of how heat behaves in solids, liquids, and gases — and how to use equations practically in problems.

About this Online Test

The Chapter 11 Online Test is divided into three papers designed to help you grow from beginner to advanced level. Each paper focuses on accuracy, concept building, and exam-like pressure.

  • Paper 1 — Concept Check: 20 questions · 30 min · Pass ≥ 40%
  • Paper 2 — Mixed Practice: 30 questions · 45 min · Pass ≥ 50% · Fresh set every attempt
  • Paper 3 — Final Challenge: 50 questions · 75 min · Pass ≥ 70% · Certificate on pass

Papers 2 and 3 provide new question sets every time you attempt, while Paper 1 remains constant for fundamental revision. Each test is auto-evaluated and includes full answer review after completion.

Key Topics Covered (Thermal Properties of Matter)

  • Temperature and heat — concepts and difference
  • Thermal expansion — linear, area, and volume expansion
  • Specific heat capacity and calorimetry
  • Change of state — latent heat of fusion and vaporization
  • Anomalous expansion of water
  • Heat transfer mechanisms — conduction, convection, and radiation
  • Newton’s law of cooling and its applications
  • Thermal conductivity and real-life examples

Why You Should Attempt This Test

Thermal Physics is a high-scoring topic once concepts are clear. This online test helps you build confidence by revising both definitions and numerical problems. It allows you to:

  • Strengthen formula-based understanding of heat and temperature
  • Revise all key concepts through timed tests
  • Identify weak areas instantly with automatic scoring
  • Develop speed and accuracy for board and competitive exams
  • Access free and unlimited practice without login

Who Should Take This Test

  • CBSE/NCERT Class 11 students revising Chapter 11
  • JEE and NEET aspirants focusing on Thermodynamics and Heat Transfer
  • Students who want to improve their numerical solving skills
  • Teachers using it as a ready-to-use chapter quiz for class practice

Preparation Tips for Chapter 11 — Thermal Properties of Matter

  • Learn all expansion coefficients and their relations (α, β, γ).
  • Practice calorimetry problems using the heat balance principle.
  • Revise Newton’s law of cooling and related experimental questions.
  • Attempt Paper 1 for concept revision, then Paper 2 & 3 for timed testing.
  • After each test, check wrong answers carefully to avoid repeating mistakes.

Before You Start

  • Do not refresh or close the tab during the test.
  • Use latest Chrome or Edge browser for best results.
  • Ensure a stable internet connection for smooth submission.

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