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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 .

12 / 20

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

13 / 20

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.

15 / 20

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.

16 / 20

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:

18 / 20

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

19 / 20

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. What is the critical Reynolds number for flow in a cylindrical tube?

2 / 30

2. Pressure in a fluid at depth depends on:

3 / 30

3. Which of the following household devices is an application of the Venturi effect?

4 / 30

4. A Newtonian fluid is defined as one in which:

5 / 30

5. A container has two immiscible liquids, each of height 2 m. The densities are and . Find the pressure at the bottom.

6 / 30

6. A pollen grain settles in water very slowly because:

7 / 30

7. Which factor primarily causes the decrease of viscosity of liquids with temperature?

8 / 30

8. In pipe flow, if the velocity is doubled while keeping density, viscosity, and diameter constant, Reynolds number will:

9 / 30

9. Which of the following is the best example of terminal velocity in nature?

10 / 30

10. A solid cube of ice melts completely when heat is supplied. If latent heat of fusion is , find the mass of ice.

11 / 30

11. For a liquid film of surface tension and area , the total surface energy is:

12 / 30

12. Why do car engines use water or coolant in radiators?

13 / 30

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

14 / 30

14. If fluid viscosity increases while keeping density, velocity, and diameter constant, the Reynolds number will:

15 / 30

15. How does temperature generally affect the viscosity of liquids?

16 / 30

16. The height of water rise in soil is inversely proportional to:

17 / 30

17. The cabin of an aircraft flying at very high altitudes is pressurized because:

18 / 30

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

19 / 30

19. A car weighing is to be lifted using a hydraulic lift. If the area of the large piston is and that of the small piston is , what minimum force must be applied on the small piston?

20 / 30

20. Why does sandy soil dry faster than clay soil?

21 / 30

21. Which statement best summarizes surface tension measurement techniques?

22 / 30

22. Which assumption is NOT valid in Bernoulli’s principle?

23 / 30

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

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24. Which flow regime is characterized by a mix of laminar and turbulent patterns, often unstable and sensitive to disturbances?

25 / 30

25. Which property of detergents helps them clean greasy dishes effectively?

26 / 30

26. Which statement best summarizes the role of bubbles in medicine and engineering?

27 / 30

27. A film of area is stretched to . If surface tension is , calculate the work done.

28 / 30

28. Why do small liquid drops tend to be spherical in shape?

29 / 30

29. Which of the following flow regimes has the highest energy loss due to friction and eddies?

30 / 30

30. Which liquid shows capillary rise in a glass tube?

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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 detergents more effective in hard water than soaps?

2 / 50

2. Which of the following sports uses Bernoulli’s principle?

3 / 50

3. How do thermal properties of matter help in meteorology?

4 / 50

4. Why does terminal velocity increase with particle radius?

5 / 50

5. Which of the following is a direct consequence of reduced atmospheric pressure at higher altitudes?

6 / 50

6. The expression of viscous drag force derived by Stokes is:

7 / 50

7. The instrument used to measure atmospheric pressure is:

8 / 50

8. The SI unit of temperature is:

9 / 50

9. Which statement best summarizes the role of bubbles in medicine and engineering?

10 / 50

10. Which of the following statements is TRUE about variation of pressure with height?

11 / 50

11. The emissive power of a blackbody at is:

12 / 50

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

13 / 50

13. Why do clothes washed with detergent appear cleaner than with plain water?

14 / 50

14. Why does terminal velocity occur in fluids?

15 / 50

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

16 / 50

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

17 / 50

17. For a given particle, terminal velocity will be higher in:

18 / 50

18. A soap film has area and surface tension . Calculate its surface energy.

19 / 50

19. An open tank contains two immiscible liquids of densities and , each of height . Find the pressure at the bottom.

20 / 50

20. Which factor directly increases the height of capillary rise in a liquid?

21 / 50

21. Atmospheric pressure is caused by:

22 / 50

22. A jar contains two immiscible liquids: water () of height 3 m, and oil () of height 2 m above it. Find the pressure at the bottom of the jar.

23 / 50

23. Which of the following household devices is an application of the Venturi effect?

24 / 50

24. Which of the following devices is based on Pascal’s law?

25 / 50

25. In medicine, why must ultrasound contrast bubbles be smaller than red blood cells?

26 / 50

26. Why do small liquid drops tend to be spherical in shape?

27 / 50

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

28 / 50

28. A block of ice at is converted into water at . If latent heat of fusion of ice = , calculate heat absorbed.

29 / 50

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

30 / 50

30. The viscosity of a gas at absolute temperature is approximately proportional to:

31 / 50

31. Which liquid shows capillary rise in a glass tube?

32 / 50

32. Which of the following conditions ensures that terminal velocity exists for a falling body in a fluid?

33 / 50

33. Liquids are considered nearly incompressible because:

34 / 50

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

35 / 50

35. Terminal velocity of raindrops is important because:

36 / 50

36. What is the role of buoyant force in reaching terminal velocity?

37 / 50

37. Hydraulic brakes in automobiles work on the principle of:

38 / 50

38. What is the basic structural feature of detergent molecules?

39 / 50

39. Viscosity in gases arises mainly due to:

40 / 50

40. Why are soap bubbles more stable in the presence of glycerin?

41 / 50

41. Why do very fine colloidal particles settle extremely slowly in fluids?

42 / 50

42. A human body radiates at body temperature . If body surface area is , calculate emissivity. ()

43 / 50

43. For a liquid film of surface tension and area , the total surface energy is:

44 / 50

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

45 / 50

45. Which statement explains why surface tension and surface energy are numerically equal?

46 / 50

46. Which of the following statements is TRUE regarding angle of contact?

47 / 50

47. A blackbody radiates at . At what temperature will it radiate ?

48 / 50

48. A metallic sphere of radius at radiates heat in surroundings at . If emissivity = 1 and , find the power radiated.

49 / 50

49. A flow with Reynolds number is classified as:

50 / 50

50. Which of the following is an application of capillarity and surface tension in materials science?

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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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