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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. How does surface tension of a liquid generally vary with temperature?

2 / 30

2. The velocity at which laminar flow just becomes unstable and begins to turn turbulent is called:

3 / 30

3. Which of the following is TRUE regarding surface energy and stability of droplets?

4 / 30

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

5 / 30

5. The rise of a liquid in a capillary tube is given by:

6 / 30

6. Which of the following is a correct statement about terminal velocity?

7 / 30

7. At what depth in water will the hydrostatic pressure be equal to twice the atmospheric pressure? (Take ).

8 / 30

8. A hydraulic press has a velocity ratio of 100. If the efficiency of the press is 80% and an effort of 500 N is applied, what load can be lifted?

9 / 30

9. Why do soap bubbles show rainbow-like colors?

10 / 30

10. Which of the following expressions gives the variation of pressure with height in the atmosphere (for incompressible air approximation)?

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11. In large arteries under abnormal high blood flow rates, the regime may become:

12 / 30

12. Which of the following statements summarizes the main limitations of Stokes’ law?

13 / 30

13. A capillary tube of radius is dipped in water. If water rises to , calculate the surface tension. ()

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14. Which of the following is NOT a limitation of Stokes’ law?

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15. 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 = ).

16 / 30

16. A flow with Reynolds number is classified as:

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17. A dam has water of depth 50 m. Find the pressure at the base. ()

18 / 30

18. Non-Newtonian fluids differ from Newtonian fluids because:

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

20 / 30

20. A simple U-tube manometer contains mercury. If the levels of mercury in both arms are equal, this indicates:

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21. The hydrostatic pressure at a depth in a fluid of density is given by:

22 / 30

22. A capillary tube of radius is inserted in mercury (). Find the height of mercury column.

23 / 30

23. During the derivation of Bernoulli’s equation, the work done by pressure force in moving a fluid element is equated to:

24 / 30

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

25 / 30

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

26 / 30

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

27 / 30

27. Which physical condition determines the validity of Stokes’ law?

28 / 30

28. Why are smaller liquid droplets less stable compared to larger ones?

29 / 30

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

30 / 30

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

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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. How does temperature generally affect the viscosity of liquids?

2 / 50

2. The Reynolds number is dimensionless because:

3 / 50

3. Which of the following is a correct example of terminal velocity in fluid flow?

4 / 50

4. Why is the study of thermal properties crucial in space technology?

5 / 50

5. How does atmospheric pressure vary with height above the Earth’s surface?

6 / 50

6. Which of the following fluids shows shear-thickening (dilatant) behavior?

7 / 50

7. Why are gaps left between concrete slabs on roads and pavements?

8 / 50

8. Why are handles of cooking utensils made of wood or plastic?

9 / 50

9. Which statement correctly describes the combined effect of temperature and pressure on liquid viscosity?

10 / 50

10. What is streamline flow in fluids?

11 / 50

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

12 / 50

12. In the capillary rise method, surface tension is calculated using the formula:

13 / 50

13. Why do farmers prefer loamy soil for crops?

14 / 50

14. A bubble in air has radius and surface tension . Find the excess pressure inside the bubble.

15 / 50

15. One limitation of Stokes’ law in real-world sedimentation experiments is:

16 / 50

16. 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.

17 / 50

17. The pressure at sea level is . At a height where the atmospheric pressure is , the height difference is approximately:

18 / 50

18. Which of the following is a correct statement about terminal velocity?

19 / 50

19. If a liquid of density is filled in a tank to a height of , what is the pressure at the bottom?

20 / 50

20. A hydraulic jack has a small piston of radius and a large piston of radius . If a force of 200 N is applied to the small piston, calculate the force exerted by the large piston.

21 / 50

21. Which of the following statements summarizes the main limitations of Stokes’ law?

22 / 50

22. What type of force is represented by Stokes’ law?

23 / 50

23. What is the angle of contact?

24 / 50

24. 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?

25 / 50

25. If cohesive forces in a liquid are stronger than adhesive forces with the container, the liquid will:

26 / 50

26. A flow with Reynolds number is classified as:

27 / 50

27. Which assumption about the fluid is required for Stokes’ law to be valid?

28 / 50

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

29 / 50

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

30 / 50

30. Which of the following statements shows the significance of Bernoulli’s principle?

31 / 50

31. A soap solution has surface tension . Calculate the work done in blowing a bubble of radius .

32 / 50

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

33 / 50

33. Which parameter in the Reynolds number formula represents the "characteristic length"?

34 / 50

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

35 / 50

35. The dimension of coefficient of viscosity is:

36 / 50

36. A cavity radiator at emits maximum radiation at wavelength . If temperature increases to , the new peak wavelength will be:

37 / 50

37. How does the density of a liquid affect capillary rise?

38 / 50

38. Which physical quantity is measured using a thermometer?

39 / 50

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

40 / 50

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

41 / 50

41. Which principle is used in the working of hydraulic lifts and hydraulic brakes?

42 / 50

42. Which real-life application of Bernoulli’s principle explains the lift force on an airplane wing?

43 / 50

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

44 / 50

44. Which real-life example shows the importance of studying thermal properties?

45 / 50

45. Why must the hydraulic brake system be completely sealed and free of air bubbles?

46 / 50

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

47 / 50

47. Why does the wall of a dam have greater thickness at the bottom than at the top?

48 / 50

48. The temperature at which pure ice melts under normal atmospheric pressure is:

49 / 50

49. Mercury in a glass tube shows a convex meniscus because:

50 / 50

50. Why do soap bubbles form more easily than pure water bubbles?

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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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