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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. Which of the following explains why two containers of different shapes but same depth have the same pressure at the bottom?

2 / 30

2. A fluid of viscosity flows through a capillary of length 0.1 m and radius 0.001 m under a pressure difference of 100 Pa. Find the volume flow rate.

3 / 30

3. A hydraulic lift is used to raise a car of mass 1200 kg. If the area of the larger piston is , calculate the pressure required in the system. (Take )

4 / 30

4. A liquid of density and viscosity flows with velocity in a pipe of diameter . Find Reynolds number.

5 / 30

5. The expression for terminal velocity of a spherical particle in a viscous medium is:

6 / 30

6. Engineers prefer laminar flow in lubrication systems because:

7 / 30

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

8 / 30

8. A sphere of radius is falling in a fluid of viscosity . If its terminal velocity is and density difference between sphere and fluid is , verify Stokes’ law. ()

9 / 30

9. The Reynolds number is defined as:

10 / 30

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

11 / 30

11. If Reynolds number is very small (), flow is termed as:

12 / 30

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

13 / 30

13. The Venturi meter is an application of the Venturi effect used to measure:

14 / 30

14. When a soap bubble is blown larger, its internal pressure:

15 / 30

15. Which of the following decreases surface tension of water?

16 / 30

16. For water in a clean glass tube, the meniscus is concave because:

17 / 30

17. 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.

18 / 30

18. Which parameter does NOT directly affect Reynolds number?

19 / 30

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

20 / 30

20. A spherical pollen grain of radius settles in air (, ). If the pollen density is , calculate terminal velocity.

21 / 30

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

22 / 30

22. Why is mercury commonly used in barometers and manometers instead of water?

23 / 30

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

24 / 30

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

25 / 30

25. Why are golf balls designed with dimples?

26 / 30

26. Atmospheric pressure at sea level is approximately equal to:

27 / 30

27. A horizontal tube of cross-sectional area carries water at a velocity of . The tube narrows to a cross-sectional area of . Find the pressure drop between the wide and narrow sections. ()

28 / 30

28. Pressure can also be expressed in terms of energy density because:

29 / 30

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

30 / 30

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

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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 does a fast-moving train cause nearby objects to be pulled towards it?

2 / 50

2. A hydraulic lift has a mechanical advantage of 50. If an input force of 200 N is applied, the output force is:

3 / 50

3. In detergent cleaning, grease is removed because:

4 / 50

4. A lead shot of radius falls through oil of viscosity . Densities of lead and oil are and . Find its terminal velocity.

5 / 50

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

6 / 50

6. Adhesives stick better to surfaces when:

7 / 50

7. The variation of pressure with height in a fluid under gravity is expressed as:

8 / 50

8. A swimming pool is 2 m deep. What is the pressure at the bottom due to water? ()

9 / 50

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

10 / 50

10. The energy required to form a bubble of radius and surface tension is:

11 / 50

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

12 / 50

12. Which application of surface tension and capillarity is used in wicks of lamps?

13 / 50

13. 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)

14 / 50

14. For very small pollen grains in air, terminal velocity is extremely small because:

15 / 50

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

16 / 50

16. Which of the following is true about gases but NOT about liquids?

17 / 50

17. A diver is 25 m deep in a lake of water. Calculate the absolute pressure he experiences if atmospheric pressure is and water density is . (Take )

18 / 50

18. Why do paper towels absorb water?

19 / 50

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

20 / 50

20. A lead shot of radius falls through oil of viscosity . If density of lead = and oil = , calculate terminal velocity. ()

21 / 50

21. Surface tension is defined as:

22 / 50

22. A spherical ball of radius 0.5 cm and density 8000 falls in water (ρ=1000). Terminal velocity = 5 cm/s. Find viscosity of water.

23 / 50

23. Which relation expresses the effect of temperature on viscosity of liquids (Arrhenius relation)?

24 / 50

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

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. In a hydraulic press, the input piston has an area of and the output piston has an area of . If a force of 150 N is applied on the small piston, calculate the force on the large piston.

27 / 50

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

28 / 50

28. If the angle of contact , the liquid:

29 / 50

29. Which factor determines the surface energy of a liquid?

30 / 50

30. In practical systems, the exact critical Reynolds number for transition:

31 / 50

31. Which of the following is a limitation of Bernoulli’s principle?

32 / 50

32. In Reynolds’ experiment, transitional flow occurs in the range of Reynolds number:

33 / 50

33. The smoke rising straight from an incense stick is an example of which regime?

34 / 50

34. Viscosity of a fluid is defined as:

35 / 50

35. Which of the following is a correct assumption of Bernoulli’s principle?

36 / 50

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

37 / 50

37. The Venturi meter is an application of the Venturi effect used to measure:

38 / 50

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

39 / 50

39. Why do small liquid drops tend to be spherical?

40 / 50

40. A horizontal capillary tube of radius is dipped in a liquid with surface tension , density , and contact angle . Calculate rise of the liquid.

41 / 50

41. A common misconception about Bernoulli’s theorem is:

42 / 50

42. The design of submarines is mainly based on:

43 / 50

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

44 / 50

44. Which scientist first formulated Pascal’s law?

45 / 50

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

46 / 50

46. Which term in Stokes’ law indicates dependence on velocity?

47 / 50

47. According to Stokes’ law, the viscous drag force acting on a spherical body of radius moving with velocity in a fluid of viscosity is:

48 / 50

48. Bernoulli’s equation relates to which type of flow?

49 / 50

49. The SI unit of pressure is:

50 / 50

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

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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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