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Class 11 Physics — Chapter 10: Mechanical Properties of Fluids Online Test

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Class 11 Physics: Mechanical Properties of Fluids 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 soap bubble of radius is formed. Surface tension is . Calculate excess pressure inside the bubble.

2 / 20

2. A U-tube manometer contains mercury () and is connected to a pipeline carrying water. The difference in mercury levels is . Find gauge pressure in the pipe. (g = 9.8)

3 / 20

3. Which phenomenon demonstrates detergent’s role in reducing surface tension?

4 / 20

4. In bubbles, why is the pressure inside greater than outside?

5 / 20

5. Which of the following phenomena is due to poor wetting?

6 / 20

6. Which instrument is used to measure the angle of contact accurately?

7 / 20

7. A square wire frame of side is dipped into a soap solution and lifted out, forming a soap film. If surface tension is , find the work required to break the film.

8 / 20

8. A liquid rises to height in a capillary of radius . If , find surface tension.

9 / 20

9. The drop weight method of measuring surface tension is based on:

10 / 20

10. A water jet of velocity comes out of a pipe at ground level. Using Bernoulli’s principle, find the maximum height it can reach. ()

11 / 20

11. Kerosene () flows at velocity in a 0.03 m diameter pipe. Calculate Reynolds number.

12 / 20

12. Water () flows at velocity through a pipe of diameter . Calculate Reynolds number.

13 / 20

13. If the Reynolds number for flow in a pipe is 800, the flow is:

14 / 20

14. Water of density and viscosity flows through a pipe of diameter with average velocity . Calculate the Reynolds number and state the flow type.

15 / 20

15. Oil () flows in a tube of diameter at velocity . Calculate Reynolds number.

16 / 20

16. What will happen to the height of the mercury column in a barometer if taken to the top of a mountain?

17 / 20

17. A tank has oil of density up to a height of 5 m. Find the pressure at the bottom due to oil. (Take )

18 / 20

18. A solid block of area rests at the bottom of a tank 10 m deep filled with water. Find the total force acting on the top surface of the block. (Take )

19 / 20

19. In airplane hydraulic systems, Pascal’s principle is used to:

20 / 20

20. A container is filled with water () to a height of 10 m. Find the hydrostatic pressure at the bottom. (Take )

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Class 11 Physics: Mechanical Properties of Fluids 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. A liquid flows in a 4 cm diameter pipe with velocity . If its density = and viscosity = , calculate Reynolds number.

2 / 30

2. When two soap bubbles of equal size coalesce, the surface energy:

3 / 30

3. If the terminal velocity of a sphere of radius is , then what will be the terminal velocity if radius is doubled, keeping all other conditions the same?

4 / 30

4. A water tank has a hole 2 m below the free surface. Find velocity of efflux. (g = 9.8)

5 / 30

5. When smoke rising from incense sticks changes from smooth to irregular, it indicates transition from:

6 / 30

6. Which of the following methods is commonly used to measure surface tension of a liquid?

7 / 30

7. Which device is used in weather stations to continuously record atmospheric pressure over time?

8 / 30

8. When does a falling particle fail to reach terminal velocity in a fluid?

9 / 30

9. Which of the following instruments is most suitable for measuring viscosity of highly viscous liquids like tar or bitumen?

10 / 30

10. In very tall trees, capillary rise alone cannot account for full transport of water. What additional mechanism helps?

11 / 30

11. In micelle formation, the orientation of detergent molecules is such that:

12 / 30

12. Who invented the mercury barometer to measure atmospheric pressure?

13 / 30

13. Which of the following liquids will rise highest in the same capillary tube?

14 / 30

14. Which factor is responsible for collapse of small bubbles faster than large ones?

15 / 30

15. Which experimental method uses the detachment of a ring from a liquid surface to measure surface tension?

16 / 30

16. The transition from laminar to turbulent flow in a pipe occurs when:

17 / 30

17. A container is filled with water () to a height of 10 m. Find the hydrostatic pressure at the bottom. (Take )

18 / 30

18. Which safety issue is commonly faced in hydraulic brakes?

19 / 30

19. Which of the following pairs correctly identifies one Newtonian and one Non-Newtonian fluid?

20 / 30

20. Which of the following indicates that terminal velocity has been reached?

21 / 30

21. A container has a liquid of density up to 2.5 m height. Find the pressure at the bottom due to the liquid. (Take )

22 / 30

22. Adhesives stick better to surfaces when:

23 / 30

23. A tank is filled with water to a depth of 12 m. Calculate the pressure at the bottom of the tank. ()

24 / 30

24. A soap bubble of radius has excess pressure of 100 Pa. Find surface tension.

25 / 30

25. The SI unit of viscosity is:

26 / 30

26. An air bubble rises from the bottom of a lake 40 m deep. If atmospheric pressure is , find the pressure inside the bubble at the bottom. (Take )

27 / 30

27. The kinematic viscosity of a liquid is defined as:

28 / 30

28. Why does a raindrop become flattened while falling through the air?

29 / 30

29. A cylindrical tank of height 6 m is filled with water (). Find the pressure at the bottom of the tank. (Take )

30 / 30

30. Which of the following conditions is required for Stokes’ law to hold?

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Class 11 Physics: Mechanical Properties of Fluids 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!

Earn a certificate upon passing

Get new questions with every attempt

  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. Effect of pressure on viscosity of gases is generally:

2 / 50

2. Liquids transmit pressure equally in all directions because:

3 / 50

3. Which method of surface tension measurement involves the formation of bubbles?

4 / 50

4. A spherical raindrop of radius has surface tension . Calculate excess pressure inside.

5 / 50

5. If a liquid has higher viscosity, then:

6 / 50

6. Which phenomenon demonstrates detergent’s role in reducing surface tension?

7 / 50

7. In a Venturi meter, Bernoulli’s principle is applied to measure:

8 / 50

8. Why do larger raindrops fall faster than smaller raindrops?

9 / 50

9. In capillary rise method, the height of liquid column is inversely proportional to:

10 / 50

10. Why does mercury form a convex meniscus in glass tubes?

11 / 50

11. A raindrop of radius falls through air (, ). If density of water = , find its terminal velocity.

12 / 50

12. Osborne Reynolds used what fluid in his famous experiment?

13 / 50

13. The time taken by a particle to reach near its terminal velocity is determined by:

14 / 50

14. The formula for surface tension using the drop weight method is:

15 / 50

15. Bernoulli’s principle does not apply in which of the following cases?

16 / 50

16. Who invented the mercury barometer to measure atmospheric pressure?

17 / 50

17. A soap bubble of radius has excess pressure . Surface tension is measured using:

18 / 50

18. Which instrument is used to measure atmospheric pressure?

19 / 50

19. A flow with is categorized as:

20 / 50

20. A steel ball of radius falls through glycerine (viscosity ) with terminal velocity . Find density of steel if glycerine density is . (g = 9.8)

21 / 50

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

22 / 50

22. A Venturi meter is connected to a horizontal pipe carrying water. If the area at the inlet is four times the area at the throat, the velocity at the throat compared to the inlet is:

23 / 50

23. In metallurgy, why is surface tension important?

24 / 50

24. Which law/equation is more applicable in laminar pipe flow?

25 / 50

25. Which scientist first formulated Pascal’s law?

26 / 50

26. A particle of radius falls in a liquid of viscosity . If density difference = , calculate its terminal velocity. ()

27 / 50

27. The lift of an airplane wing is explained by:

28 / 50

28. Stokes’ law is not applicable when:

29 / 50

29. In Bernoulli’s equation, the pressure energy term per unit volume is:

30 / 50

30. A mountain climber at 6000 m experiences reduced pressure compared to sea level. This reduction occurs because:

31 / 50

31. Water flows through a horizontal pipe of cross-sectional areas and . The pressure difference between these sections is . Find the flow rate of water. ()

32 / 50

32. For , the flow is:

33 / 50

33. Stokes’ law for viscosity measurement using a falling-sphere method is:

34 / 50

34. The variation of surface tension with temperature can be expressed as:

35 / 50

35. The angle of contact is defined as the angle between:

36 / 50

36. The instrument used in aircrafts to measure altitude based on atmospheric pressure is:

37 / 50

37. When a small sphere falls in a viscous fluid, it eventually reaches terminal velocity because:

38 / 50

38. Which of the following does NOT affect terminal velocity?

39 / 50

39. Waterproof jackets are designed by making fabric surfaces:

40 / 50

40. A gas flows in a tube of diameter . If velocity = , density = , viscosity = , calculate Reynolds number.

41 / 50

41. The excess pressure inside a water droplet of radius is . Find surface tension.

42 / 50

42. Which of the following applications is explained by surface tension in fluids?

43 / 50

43. A steel ball of radius is dropped in oil of viscosity . If densities of steel and oil are and , calculate its terminal velocity. ()

44 / 50

44. A steel ball of radius falls in water. If densities of steel and water are and , viscosity of water is , calculate terminal velocity. ()

45 / 50

45. Which of the following physical quantities is described by “Mechanical Properties of Fluids”?

46 / 50

46. A small steel ball of radius falls through glycerin with viscosity . If the density of steel is and glycerin density is , calculate the terminal velocity. ()

47 / 50

47. In sedimentation analysis, the viscosity of the medium must be known because:

48 / 50

48. A liquid of density and viscosity flows at velocity in a pipe of diameter . Calculate Reynolds number.

49 / 50

49. In a fluid, pressure at depth h is given by . If depth = 500 m in sea water (ρ=1030), find pressure (in atm). (1 atm = 1.013×10^5 Pa).

50 / 50

50. A liquid flows through a capillary tube of radius and length . If the flow rate is under a pressure difference of , calculate its viscosity.

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Practice Mechanical Properties of Fluids MCQs
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Class 11 Physics — Chapter 10: Mechanical Properties of Fluids Online Test

The Mechanical Properties of Fluids Online Test is a perfect way for Class 11 students to understand how liquids and gases behave under different conditions of pressure and flow. This chapter beautifully connects real-life applications like flying of airplanes, floating of ships, and working of hydraulic brakes with Physics principles. By solving MCQs on Mechanical Properties of Fluids, you will gain a deeper understanding of Pascal’s law, Bernoulli’s theorem, viscosity, surface tension, and buoyancy.

These tests are based on the NCERT Class 11 Physics Chapter 10 and follow the latest CBSE and competitive exam pattern. Each test paper is timed, automatically checked, and shows your results instantly. Whether you are preparing for school exams, JEE, or NEET, this online test helps you evaluate your strengths and improve your weak areas through practice.

The test format is designed to make you feel like you are in a real exam environment. Each question is carefully prepared to test your clarity of formulas and concepts. Students who practice these questions regularly develop better visualization and analytical thinking — especially in numerical topics like fluid pressure, flow rate, and capillary action.

About this Online Test

The Chapter 10 Online Test is divided into three progressive papers. Start with basics, then move to mixed problems, and finally test your complete understanding with challenging questions.

  • Paper 1 — Basic Concepts: 20 questions · 30 min · Pass ≥ 40%
  • Paper 2 — Mixed Practice: 30 questions · 45 min · Pass ≥ 50% · New questions each attempt
  • Paper 3 — Advanced Challenge: 50 questions · 75 min · Pass ≥ 70% · Certificate after pass

Papers 2 and 3 bring fresh sets of questions on each reattempt, while Paper 1 remains fixed for quick revision. All tests include automatic evaluation, instant score display, and complete answer review.

Key Topics Covered (Mechanical Properties of Fluids)

  • Density and pressure of fluids
  • Pascal’s law and hydraulic lift applications
  • Archimedes’ principle and buoyancy
  • Bernoulli’s theorem and its practical uses
  • Equation of continuity and streamlines
  • Viscosity and Stoke’s law
  • Surface tension and capillary rise
  • Reynolds number and flow of liquids

Why You Should Take This Test

Many students find fluid mechanics confusing because they can’t visualize how pressure, force, and flow are related. This online test turns theory into understanding through simple but effective MCQs. It helps you:

  • Revise all major formulas related to fluid mechanics
  • Strengthen concepts of pressure, buoyancy, and viscosity
  • Develop logical thinking for problem-solving
  • Track improvement through instant scoring and retakes
  • Build accuracy and speed for board and competitive exams

Who Should Attempt

  • Class 11 CBSE/NCERT students revising Chapter 10
  • JEE and NEET aspirants preparing for Mechanics-based questions
  • Students who want more practice in numerical and conceptual topics
  • Teachers looking for ready-to-use timed chapter tests

Preparation Tips for Chapter 10 — Mechanical Properties of Fluids

  • Understand pressure-depth relation and Pascal’s law clearly.
  • Practice numerical problems on Bernoulli’s equation and continuity equation.
  • Revise definitions of viscosity, surface tension, and capillary action.
  • Attempt Paper 1 for concepts, Paper 2 for accuracy, and Paper 3 for full-chapter mastery.
  • Reattempt weak areas until you can solve questions confidently within time.

Before You Start

  • Use updated Chrome or Edge browser for smooth access.
  • Keep your internet connection stable during the test.
  • Don’t refresh or close the tab while attempting the paper.

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