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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.

Get new questions on each attempt

  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. Why do detergents produce foam while cleaning?

2 / 30

2. Standard atmospheric pressure at sea level is defined as:

3 / 30

3. Which of the following statements correctly explains the importance of thermal expansion in railways?

4 / 30

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

5 / 30

5. The dimension of coefficient of viscosity is:

6 / 30

6. Why are small soap bubbles less stable than larger ones?

7 / 30

7. A capillary of radius dipped in water shows a rise of . If radius is halved, what will be the rise?

8 / 30

8. A spherical blackbody of radius at radiates power . Find . ().

9 / 30

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

10 / 30

10. Which of the following is true about the density of liquids and gases?

11 / 30

11. A solid copper sphere of radius cools from to . If specific heat , density , and emissivity = 1, calculate energy lost.

12 / 30

12. Why are streamlined shapes used in aerodynamics?

13 / 30

13. 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.

14 / 30

14. The effect of pressure on the viscosity of gases at moderate pressure is:

15 / 30

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

16 / 30

16. Which condition indicates turbulent flow in Reynolds’ experiment?

17 / 30

17. Which statement best summarizes the applications of wetting and spreading?

18 / 30

18. In a pipe, the flow changes from laminar to turbulent when:

19 / 30

19. Which of the following liquids shows a sharp decrease in viscosity when heated?

20 / 30

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

21 / 30

21. Which of the following daily-life examples illustrates poor wetting?

22 / 30

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

23 / 30

23. 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.

24 / 30

24. Why do liquid drops tend to form spherical shapes in the absence of external forces?

25 / 30

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

26 / 30

26. The effectiveness of hydraulic brakes decreases if:

27 / 30

27. Why does paint spread better on a surface treated with primer?

28 / 30

28. In aerodynamics, drag force acting on a body moving through air consists mainly of:

29 / 30

29. A skydiver falls freely from an aircraft and attains a speed of about . This speed is called:

30 / 30

30. Why do liquids form a free surface while gases do not?

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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 can some insects like water striders walk on water?

2 / 50

2. Which law describes the exponential decrease of pressure with height in the atmosphere (assuming isothermal conditions)?

3 / 50

3. Which of the following explains why gases are easily compressible while liquids are not?

4 / 50

4. A capillary tube of radius shows a depression of for mercury. If density of mercury is and surface tension is , find the angle of contact.

5 / 50

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

6 / 50

6. Derive the expression for viscous force on a sphere. Which factors does it depend on?

7 / 50

7. A glass of water at is placed in a refrigerator at . How much heat must be removed to convert all water to ice at ? (c = 4200 J/kgK, L = ).

8 / 50

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

9 / 50

9. Which of the following is true about the density of liquids and gases?

10 / 50

10. Water of density flows in a pipe of diameter with velocity . If viscosity of water is , find the Reynolds number.

11 / 50

11. Why does turbulence occur at high Reynolds numbers?

12 / 50

12. What are the dimensions of pressure in terms of mass (M), length (L), and time (T)?

13 / 50

13. A container holds mercury up to 2 m. If , calculate the pressure at the bottom. ()

14 / 50

14. Why do detergents help in removing grease and oil stains?

15 / 50

15. Why is thermal conductivity important in everyday appliances?

16 / 50

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

17 / 50

17. Which of the following is the SI unit of pressure?

18 / 50

18. Why can liquids be stored in open containers but gases cannot?

19 / 50

19. A spherical blackbody of radius at radiates power . Find . ().

20 / 50

20. Why does a fast-moving train tend to pull nearby objects toward it?

21 / 50

21. Why does hot water spread more easily on oily or greasy surfaces compared to cold water?

22 / 50

22. In Bernoulli’s derivation, dividing energy terms by gives:

23 / 50

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

24 / 50

24. What is the angle of contact?

25 / 50

25. Toothpaste is squeezed out of its tube more easily after applying pressure because it behaves as a:

26 / 50

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

27 / 50

27. Which of the following fluids is considered “ideal” with respect to viscosity?

28 / 50

28. In an Ostwald viscometer, the relative viscosity of two liquids is given by:

29 / 50

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

30 / 50

30. Which of the following is a typical flow regime for blood in small capillaries?

31 / 50

31. Which real-life example directly demonstrates Pascal’s principle?

32 / 50

32. The resonance frequency of a gas bubble of radius in liquid is approximately given by:

33 / 50

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

34 / 50

34. Terminal velocity of a particle is proportional to:

35 / 50

35. A flow with Reynolds number is most likely:

36 / 50

36. At what height will the atmospheric pressure reduce to half of its value at the surface, assuming air temperature is constant at ? (Take molar mass of air , , ).

37 / 50

37. A detergent solution forms smaller drops on a glass slide compared to pure water. Why?

38 / 50

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

39 / 50

39. Which type of viscometer measures viscosity by the falling sphere method?

40 / 50

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

41 / 50

41. For mercury in a clean glass tube, the angle of contact is approximately:

42 / 50

42. Why do liquid drops tend to form spherical shapes in the absence of external forces?

43 / 50

43. The unit Torr is defined based on:

44 / 50

44. Two soap bubbles of radii and are connected by a tube. The air will flow:

45 / 50

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

46 / 50

46. Reynolds number is a dimensionless quantity used to predict:

47 / 50

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

48 / 50

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

49 / 50

49. Which of the following best explains why soap bubbles are spherical?

50 / 50

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

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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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