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

2 / 30

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

3 / 30

3. In a biomedical application, blood flow in capillaries usually has . This indicates the flow is:

4 / 30

4. Which instrument is used to measure atmospheric pressure?

5 / 30

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

6 / 30

6. A flow with is categorized as:

7 / 30

7. Why does stretching a soap film require energy?

8 / 30

8. In a hydraulic press, a force of 200 N is applied on a piston of area . The area of the larger piston is . What is the output force?

9 / 30

9. A falling sphere in a viscous fluid reaches terminal velocity when:

10 / 30

10. Water () flows with velocity through a pipe of diameter . Calculate Reynolds number.

11 / 30

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

12 / 30

12. The working of a perfume spray is based on:

13 / 30

13. What happens to the surface tension of a liquid when its temperature increases?

14 / 30

14. A liquid jet emerges from a hole at velocity . Find maximum height the jet can reach. (g = 9.8)

15 / 30

15. Which branch of engineering applies fluid mechanics extensively in the design of aircrafts?

16 / 30

16. Which of the following is NOT correct about viscosity?

17 / 30

17. At the same depth in a liquid, pressure is:

18 / 30

18. The SI unit of surface energy is:

19 / 30

19. In particle size analysis, smaller particles settle more slowly because:

20 / 30

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

21 / 30

21. Which of the following correctly matches flow regimes with Reynolds number?

22 / 30

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

23 / 30

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

24 / 30

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

25 / 30

25. During the transition from laminar to turbulent flow, the flow exhibits:

26 / 30

26. Atmospheric pressure decreases with altitude because:

27 / 30

27. The pressure at a depth of 1 m in mercury () is: (Take )

28 / 30

28. The dimensional formula of viscosity is:

29 / 30

29. An acute contact angle () means:

30 / 30

30. A steel ball of radius is dropped in a liquid and attains terminal velocity of . If the densities of steel and liquid are and , find the viscosity of the liquid.

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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. In ocean currents, Reynolds numbers are typically of the order of:

2 / 50

2. Water () flows through a 0.02 m diameter pipe at velocity . Calculate Reynolds number.

3 / 50

3. Bernoulli’s principle states that in a steady, incompressible, and non-viscous fluid flow:

4 / 50

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

5 / 50

5. Which of the following is NOT an assumption in the derivation of Stokes’ law?

6 / 50

6. The Redwood viscometer is used to measure:

7 / 50

7. Two spheres of radii and are dropped in the same viscous liquid. What is the ratio of their terminal velocities?

8 / 50

8. Which of the following is NOT a limitation of hydraulic brakes?

9 / 50

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

10 / 50

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

11 / 50

11. Hydraulic brakes work efficiently because:

12 / 50

12. A ball of radius falls in glycerin (, ). If terminal velocity is found to be , calculate the density of the ball.

13 / 50

13. In applying Stokes’ law to very small particles like colloids, which factor limits its accuracy?

14 / 50

14. Why does Stokes’ law fail at high velocities?

15 / 50

15. In material science, why do fine powders tend to form clumps?

16 / 50

16. The dimensional formula of pressure is:

17 / 50

17. For water at 20°C, surface tension is about . At 100°C, it is about . This shows that:

18 / 50

18. Why do detergents make clothes easier to wash?

19 / 50

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

20 / 50

20. Which of the following statements is NOT an application of Pascal’s law?

21 / 50

21. Water () flows with velocity through a pipe of diameter . Calculate Reynolds number.

22 / 50

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

23 / 50

23. A hydraulic lift has a piston of diameter 1.5 m used to lift a car of mass 1200 kg. If the smaller piston has area , calculate the force required on it.

24 / 50

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

25 / 50

25. A hydraulic lift is used to raise a car of mass 1500 kg. If the area of the large piston is , find the pressure needed in the system. (Take )

26 / 50

26. A hydraulic jack has an input piston of radius 5 cm and an output piston of radius 20 cm. If a force of 200 N is applied on the input piston, calculate the output force.

27 / 50

27. Which of the following correctly matches flow regimes with Reynolds number?

28 / 50

28. In a Venturi tube, why does the fluid velocity increase in the throat (narrow part)?

29 / 50

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

30 / 50

30. The bottom of a tank filled with two liquids has water (2 m depth) and oil () of 3 m depth above it. Find the total pressure at the bottom. ()

31 / 50

31. Which of the following assumptions is made in deriving Stokes’ law?

32 / 50

32. Water flows through a pipe of diameter at velocity . If density is and viscosity , determine Reynolds number and flow type.

33 / 50

33. Which of the following is NOT an application of the Venturi effect?

34 / 50

34. Newton’s law of viscosity is mathematically expressed as:

35 / 50

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

36 / 50

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

37 / 50

37. Which of the following best distinguishes liquids from gases?

38 / 50

38. Why are hydraulic systems more efficient than mechanical lever systems?

39 / 50

39. In a hydraulic system, the pressure applied on the input piston is . If the output piston has an area of , find the output force.

40 / 50

40. For liquids, which property has the greatest effect on viscosity?

41 / 50

41. Which instrument is used to measure atmospheric pressure?

42 / 50

42. The height of liquid rise in a capillary is directly proportional to:

43 / 50

43. A car weighing is lifted using a hydraulic lift. The large piston has an area of . What minimum force is required on the small piston of area ?

44 / 50

44. Why do overwatered plants often die despite soil saturation?

45 / 50

45. In aerodynamics, turbulent flow over aircraft wings:

46 / 50

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

47 / 50

47. Turbulent flow in water pipelines is generally avoided because:

48 / 50

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

49 / 50

49. A liquid of density and viscosity flows in a pipe of diameter . If velocity = , calculate Reynolds number.

50 / 50

50. A U-tube manometer connected to a gas container shows the mercury level on the container side higher by 15 cm compared to the open side. The atmospheric pressure is 76 cm Hg. What is the gas pressure?

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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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