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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. A spherical particle of radius has density . It falls in water (, ). Calculate its terminal velocity. ()

2 / 30

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

3 / 30

3. Which statement best summarizes the definition of surface energy?

4 / 30

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

5 / 30

5. 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.

6 / 30

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

7 / 30

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

8 / 30

8. Why does oil spread easily on water surface?

9 / 30

9. Which of the following is NOT a pressure-measuring device?

10 / 30

10. Why is Reynolds number important in chemical and process industries?

11 / 30

11. At what depth in water will the pressure be equal to three times the atmospheric pressure? ()

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12. Which of the following liquids exhibits an obtuse angle of contact with glass?

13 / 30

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

14 / 30

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

15 / 30

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

16 / 30

16. The unit “bar” is related to Pascal as:

17 / 30

17. An airplane wing generates lift mainly because:

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

19 / 30

19. The SI unit of temperature is:

20 / 30

20. 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:

21 / 30

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

22 / 30

22. In blood circulation, Reynolds numbers are typically less than 1000. What does this imply?

23 / 30

23. Why do railway tracks have steel expansion joints?

24 / 30

24. Which viscometer uses the principle of rotational resistance in fluid?

25 / 30

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

26 / 30

26. A glass capillary of radius is dipped in water. Calculate the capillary rise. (, , ).

27 / 30

27. Why does a perfume atomizer work effectively?

28 / 30

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

29 / 30

29. The drop number method for surface tension measurement involves:

30 / 30

30. In a hydraulic brake system, the driver applies a force of on the brake pedal connected to a piston of area . If the area of the brake shoe piston is , what force is exerted on the brake shoe?

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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 do railway tracks have steel expansion joints?

2 / 50

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

3 / 50

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

4 / 50

4. In a falling sphere viscometer, if a steel ball of radius falls with velocity in glycerin of viscosity , what is the viscous force acting on it?

5 / 50

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

6 / 50

6. What is the dimensional formula of viscosity as obtained from Stokes’ law?

7 / 50

7. The expression for critical velocity in terms of Reynolds number is:

8 / 50

8. The terminal velocity of a spherical particle is proportional to:

9 / 50

9. A streamline tube carries fluid of density . Work done by pressure force per unit volume as fluid moves a distance is:

10 / 50

10. A body of area and emissivity radiates at temperature . If surrounding temperature is , find . ()

11 / 50

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

12 / 50

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

13 / 50

13. What is surface energy?

14 / 50

14. Which of the following conditions is necessary for a particle to reach terminal velocity in a fluid?

15 / 50

15. Why does oil flow more slowly than water?

16 / 50

16. One atmosphere of pressure is approximately equal to:

17 / 50

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

18 / 50

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

19 / 50

19. The emissive power of a blackbody at is:

20 / 50

20. In industrial applications, why are detergents used in cooling systems?

21 / 50

21. In the capillary rise method, which of the following factors will increase the observed rise of liquid?

22 / 50

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

23 / 50

23. The Reynolds number is dimensionless because:

24 / 50

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

25 / 50

25. Why does a parachutist experience terminal velocity after some time in free fall?

26 / 50

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

27 / 50

27. What is the lowest possible temperature called?

28 / 50

28. The unit “bar” is related to Pascal as:

29 / 50

29. In Reynolds’ experiment, which visual effect indicated transition to turbulence?

30 / 50

30. In a carburetor, the Venturi effect is responsible for:

31 / 50

31. A swimmer dives to a depth of 5 m in a swimming pool. If atmospheric pressure is , calculate the total pressure on him. ()

32 / 50

32. Which of the following is a branch of physics that deals with the study of heat and its effects on matter?

33 / 50

33. A raindrop of radius falls in air of viscosity . If , , calculate its terminal velocity. ()

34 / 50

34. 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.

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

40. Hydraulic systems work on the principle of:

41 / 50

41. The unit Torr is defined based on:

42 / 50

42. In real-world flows, why does the simple form of Bernoulli’s equation need modification?

43 / 50

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

44 / 50

44. In an open-end manometer, if the mercury column is higher on the side open to the atmosphere, it indicates:

45 / 50

45. Why do farmers prefer loamy soil for crops?

46 / 50

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

47 / 50

47. What causes the reading of a mercury barometer to fall suddenly?

48 / 50

48. A blackbody at has a peak wavelength . If the peak wavelength is observed to be , verify Wien’s law constant and find its value.

49 / 50

49. A diver is 40 m below the surface of the sea. If the density of seawater is , calculate the total pressure on him. (Take atmospheric pressure ).

50 / 50

50. Why is waterproof coating applied on fabrics?

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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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