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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.

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. The slope of surface tension vs. temperature curve is generally:

2 / 30

2. Why is the roof of a house sometimes blown away during storms?

3 / 30

3. A swimmer is 5 m below the surface of a swimming pool. What hydrostatic pressure acts on him due to water? ()

4 / 30

4. The aneroid barometer differs from a mercury barometer because:

5 / 30

5. The Redwood viscometer is used to measure:

6 / 30

6. Which phenomenon in bubble dynamics is useful in cleaning delicate instruments (like surgical tools)?

7 / 30

7. In an Ostwald viscometer, the viscosity of a liquid is determined relative to:

8 / 30

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

9 / 30

9. In pharmaceuticals, surface tension is reduced in liquid medicines to:

10 / 30

10. Which of the following is independent of the shape of the container?

11 / 30

11. The terminal velocity of a spherical particle in a viscous medium is given by:

12 / 30

12. 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?

13 / 30

13. The pressure difference between two points at heights and in a liquid is:

14 / 30

14. Which instrument is based on the principle of pressure measurement?

15 / 30

15. The terminal velocity of fine dust particles in air is usually:

16 / 30

16. Atomizers used in perfumes and sprays work on Bernoulli’s principle because:

17 / 30

17. Stokes’ law is applicable to:

18 / 30

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

19 / 30

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

20 / 30

20. The formula for surface tension using the capillary rise method is:

21 / 30

21. 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:

22 / 30

22. In soap bubbles, detergents help by:

23 / 30

23. Density () of a fluid is defined as:

24 / 30

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

25 / 30

25. If a diver is 20 m below the surface of freshwater (), what is the pressure due to water at that depth? (Take )

26 / 30

26. The Venturi meter measures:

27 / 30

27. If the surface area of a liquid film increases by , the work done is:

28 / 30

28. Which of the following explains why tall buildings use water tanks at the top for water supply?

29 / 30

29. Water flows through a horizontal pipe of cross-sectional areas and . If the velocity in the wider section is , find the velocity in the narrow section.

30 / 30

30. Which phenomenon marks the beginning of turbulence during flow transition?

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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. Why are soap bubbles more stable than pure liquid bubbles?

2 / 50

2. A dam is built to hold water of depth 40 m. What is the hydrostatic pressure at the base of the dam? ()

3 / 50

3. Which flow regime is expected in blood capillaries where ?

4 / 50

4. Which real-life example can be explained using Bernoulli’s principle?

5 / 50

5. Which condition leads to maximum capillary rise?

6 / 50

6. In a pipe, velocity of water is at pressure . At another point, velocity is . Find pressure at the second point. ()

7 / 50

7. Who formulated Pascal’s Law for pressure transmission in fluids?

8 / 50

8. In bubble dynamics, what causes a bubble to oscillate in a fluid?

9 / 50

9. The SI unit of surface energy is:

10 / 50

10. Flow regime in a pipe for is:

11 / 50

11. The mathematical expression of Reynolds number is:

12 / 50

12. If the radius of a capillary tube is reduced to one-fourth, the height of capillary rise will become:

13 / 50

13. Which factor is responsible for mercury showing a depression in a capillary tube?

14 / 50

14. For , the flow is:

15 / 50

15. Why does water spread on a clean glass surface but form droplets on an oily surface?

16 / 50

16. Which of the following explains why tall buildings use water tanks at the top for water supply?

17 / 50

17. Which phenomenon in bubble dynamics is useful in cleaning delicate instruments (like surgical tools)?

18 / 50

18. In Bernoulli’s equation, the potential energy per unit volume is expressed as:

19 / 50

19. Which assumption of Bernoulli’s theorem is not valid in turbulent flow?

20 / 50

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

21 / 50

21. Which viscometer measures viscosity by observing the falling speed of a ball through a liquid?

22 / 50

22. When detergent is added to water, the contact angle on glass:

23 / 50

23. Glycerin () flows in a tube of diameter with velocity . Calculate Reynolds number.

24 / 50

24. If the surface area of a liquid film increases by , the work done is:

25 / 50

25. A small ball of radius has a terminal velocity of in a liquid of viscosity . If density of liquid = , calculate density of the ball.

26 / 50

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

27 / 50

27. The design of submarines is mainly based on:

28 / 50

28. Which unit is commonly used in meteorology to express atmospheric pressure?

29 / 50

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

30 / 50

30. The radius of a water droplet is . Find excess pressure inside. ()

31 / 50

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

32 / 50

32. The dimensional formula of viscosity is:

33 / 50

33. In Bernoulli’s equation, the kinetic energy per unit volume of fluid is:

34 / 50

34. A ball of radius falls in oil of viscosity with a velocity . If density difference between ball and oil is , check if this velocity is terminal velocity using Stokes’ law. ()

35 / 50

35. Viscosity of a fluid is defined as:

36 / 50

36. Why are hydraulic brakes preferred in modern vehicles?

37 / 50

37. In Reynolds’ experiment, the flow becomes turbulent when Reynolds number:

38 / 50

38. Why do detergents make clothes easier to wash?

39 / 50

39. Why does a gas exert uniform pressure in all directions inside a container, unlike a liquid?

40 / 50

40. A water droplet forms a spherical shape in air mainly due to:

41 / 50

41. The excess pressure inside a soap bubble of radius is:

42 / 50

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

43 / 50

43. Which factor is directly measured in all experimental methods of surface tension?

44 / 50

44. In detergent cleaning, grease is removed because:

45 / 50

45. Why does mercury depress in a glass capillary tube?

46 / 50

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

47 / 50

47. The condition for reaching terminal velocity depends strongly on:

48 / 50

48. A dam holds back water of depth 50 m. Calculate the hydrostatic pressure at the base. ()

49 / 50

49. Why do larger drops flatten at the bottom instead of remaining spherical?

50 / 50

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

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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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