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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. Engineers prefer laminar flow in lubrication systems because:

2 / 30

2. In Poiseuille’s equation, the flow rate through a capillary depends most strongly on:

3 / 30

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

4 / 30

4. Mercury in a glass capillary tube shows a contact angle of about:

5 / 30

5. If air pressure at sea level is , what is the approximate air pressure at a height of 5 km? (Assume , with scale height ).

6 / 30

6. Why does dishwashing become more effective with hot water and detergent?

7 / 30

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

8 / 30

8. A barometer reads 74 cm of Hg in a city. What is the atmospheric pressure in pascals? (Take , )

9 / 30

9. Surface tension is defined as:

10 / 30

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

11 / 30

11. A horizontal pipe carries oil (). At one end velocity is , pressure . At another end velocity is . Find pressure.

12 / 30

12. Which of the following is not an application of capillary rise?

13 / 30

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

14 / 30

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

15 / 30

15. A ball of radius is falling in a viscous fluid of viscosity . If density of sphere = , density of fluid = , calculate terminal velocity. ()

16 / 30

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

17 / 30

17. For blood flow in an artery (), diameter = , velocity = . Calculate Reynolds number.

18 / 30

18. Which of the following agricultural practices improves water retention in soil through capillary action?

19 / 30

19. In capillary action, the rise of liquid is possible only if the angle of contact is:

20 / 30

20. A capillary of radius is dipped in water at 20°C. Find the rise of water. (Surface tension = 0.072 N/m, density = 1000, g = 9.8, )

21 / 30

21. Which of the following laws explains why atmospheric pressure decreases with height?

22 / 30

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

23 / 30

23. Which force resists the expansion of a soap bubble?

24 / 30

24. In medical applications, the Venturi mask works on the Venturi effect to:

25 / 30

25. For mercury in glass, the meniscus is convex and mercury is depressed in the capillary tube because:

26 / 30

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

27 / 30

27. A small glass bead of radius is falling in air (, ). If the bead density is , calculate terminal velocity.

28 / 30

28. A spherical water drop of radius is broken into 8 equal droplets. Calculate the increase in surface energy if surface tension is .

29 / 30

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

30 / 30

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

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

2 / 50

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

3 / 50

3. In capillary action, the rise of liquid is possible only if the angle of contact is:

4 / 50

4. Which of the following examples best demonstrates laminar flow?

5 / 50

5. Why do hydraulic brakes apply equal force on all four wheels of a car?

6 / 50

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

7 / 50

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

8 / 50

8. Stokes’ law assumes the liquid is:

9 / 50

9. The spherical shape of small liquid drops is due to:

10 / 50

10. Waterproof jackets are designed by making fabric surfaces:

11 / 50

11. If the diameter of a pipe is halved while keeping velocity and other factors constant, the Reynolds number will:

12 / 50

12. In Bernoulli’s derivation, work done by pressure forces on a fluid element is balanced by:

13 / 50

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

14 / 50

14. A liquid exerts a pressure of at 5 m depth. Find the density of the liquid. (Take )

15 / 50

15. Hydrostatic pressure inside a liquid column increases:

16 / 50

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

17 / 50

17. Why are nanoparticles effective as catalysts in surface chemistry?

18 / 50

18. A tank has kerosene of density to a height of 4 m. Calculate the hydrostatic pressure at the bottom. (Take )

19 / 50

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

20 / 50

20. In bubble dynamics, the collapse of bubbles in a liquid (cavitation) can be harmful because:

21 / 50

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

22 / 50

22. Which scientist first formulated Pascal’s law?

23 / 50

23. The absolute pressure at 10 m depth in water is: (Take )

24 / 50

24. For mercury in glass, the meniscus is convex and mercury is depressed in the capillary tube because:

25 / 50

25. In blood flow, suspended cells settle at a constant speed in diagnostic centrifugation due to:

26 / 50

26. Sedimentation techniques using Stokes’ law are useful in:

27 / 50

27. Flow regime in a pipe for is:

28 / 50

28. Which of the following is not an application of capillary rise?

29 / 50

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

30 / 50

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

31 / 50

31. Which of the following conditions must be satisfied for terminal velocity to be achieved?

32 / 50

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

33 / 50

33. Why do paints spread more uniformly on walls when mixed with turpentine?

34 / 50

34. The "Lotus Effect," where water droplets roll off leaves carrying dirt, is due to:

35 / 50

35. Which of the following fluids behaves like a Bingham plastic (requires a yield stress before flowing)?

36 / 50

36. When detergent is added to water, the angle of contact with glass:

37 / 50

37. The derivation of Bernoulli’s equation starts with which fundamental law?

38 / 50

38. Why is surface chemistry important in corrosion studies?

39 / 50

39. The work required to double the surface area of a soap film of area and surface tension is:

40 / 50

40. If a liquid has an acute angle of contact, then in a capillary tube it will:

41 / 50

41. The minimum concentration of detergent required to form micelles is called:

42 / 50

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

43 / 50

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

44 / 50

44. In streamline flow, the velocity at a point is:

45 / 50

45. Stokes’ law is applied in sedimentation to:

46 / 50

46. A ball of radius falls through glycerin with viscosity . If density difference between ball and glycerin is , calculate terminal velocity.

47 / 50

47. The pressure at a depth in a liquid of density is given by:

48 / 50

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

49 / 50

49. If pressure at 5 m depth in a liquid is , then the pressure at 10 m depth is:

50 / 50

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

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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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