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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 pressure difference between two points in a fluid at depths and is:

2 / 30

2. In aerodynamics, turbulent flow over aircraft wings:

3 / 30

3. A hydraulic lift has a large piston of area and a small piston of area . What force must be applied to lift a 2000 N load?

4 / 30

4. A gas exerts a pressure of . If the force exerted is 500 N, calculate the area of the surface.

5 / 30

5. Which principle explains why toothpaste can be squeezed out of a closed tube by pressing at any point?

6 / 30

6. In soil science, capillary action helps plants survive by:

7 / 30

7. The effect of temperature on surface tension is important in which industrial process?

8 / 30

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

9 / 30

9. Which instrument is used in aircraft cabins to regulate pressure by comparing internal and external air pressure?

10 / 30

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

11 / 30

11. In ink pens, capillary action works effectively when:

12 / 30

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

13 / 30

13. The pressure in a hydraulic lift is 4000 Pa. If the area of the large piston is , what is the force exerted on it?

14 / 30

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

15 / 30

15. Which aviation effect is partly explained by the Venturi principle?

16 / 30

16. A particle of radius falls in a fluid of viscosity . If density difference = , calculate its terminal velocity.

17 / 30

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

18 / 30

18. Which of the following fluids has the highest viscosity at room temperature?

19 / 30

19. The Reynolds number is defined as:

20 / 30

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

21 / 30

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

22 / 30

22. A steel ball of radius is released in oil and attains a terminal velocity of . If the radius is doubled, its new terminal velocity will be approximately:

23 / 30

23. The relationship used in an Ostwald viscometer for comparing viscosities of two liquids is:

24 / 30

24. Air () flows with velocity through a pipe of diameter . Find Reynolds number.

25 / 30

25. Why do raindrops not grow indefinitely large?

26 / 30

26. A force of 120 N is applied on a piston of area . The pressure transmitted to the fluid is:

27 / 30

27. Which of the following liquids will rise the most in a capillary tube of the same radius?

28 / 30

28. In Newtonian fluids, the relationship between shear stress and velocity gradient is:

29 / 30

29. Why does viscosity of liquids decrease with rise in temperature?

30 / 30

30. In ink pens, ink rises into the nib due to:

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

2 / 50

2. A cubic film frame of side is dipped in soap solution. Calculate the surface energy if surface tension is .

3 / 50

3. A raindrop attains terminal velocity while falling through air because:

4 / 50

4. A steel ball of radius falls in oil of viscosity . If density of steel = and density of oil = , calculate terminal velocity.

5 / 50

5. A steel ball of radius falls in oil of viscosity . If density difference is , calculate its terminal velocity.

6 / 50

6. 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 )

7 / 50

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

8 / 50

8. Which of the following best describes the significance of Reynolds number?

9 / 50

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

10 / 50

10. In soil, capillary rise is more effective when:

11 / 50

11. Which real-life device operates on the Venturi effect?

12 / 50

12. Which property of liquids is utilized in producing waterproof coatings on fabrics?

13 / 50

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

14 / 50

14. In the above problem, if the pressure in the wider section is , calculate pressure in the narrow section. (Take water density )

15 / 50

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

16 / 50

16. Stokes’ law is not applicable when:

17 / 50

17. A raindrop of radius 1 mm is formed by condensation of small droplets each of radius 0.1 mm. Find number of droplets.

18 / 50

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

19 / 50

19. The dimensionless number introduced by Osborne Reynolds to predict flow regime is called:

20 / 50

20. A spherical soap bubble of radius requires 0.01 J work to blow. Find surface tension.

21 / 50

21. Ocean currents typically belong to which Reynolds number regime?

22 / 50

22. A small sphere of radius falls in a liquid of viscosity . If terminal velocity is and density of liquid = , calculate density of the sphere.

23 / 50

23. Which of the following is NOT a mechanical property of fluids?

24 / 50

24. Hydrostatic pressure inside a liquid column increases:

25 / 50

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

26 / 50

26. Which of the following is an example of terminal velocity in daily life?

27 / 50

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

28 / 50

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

29 / 50

29. The Reynolds experiment demonstrates:

30 / 50

30. The relationship between surface energy and surface tension is:

31 / 50

31. A hydraulic lift has two pistons. The smaller piston has an area of and the larger piston has an area of . If a load of 8000 N is to be lifted, calculate the force required on the smaller piston.

32 / 50

32. Which statement is correct regarding temperature and viscosity?

33 / 50

33. If the density of mercury is , what is the pressure at a depth of 0.5 m in mercury? (Take )

34 / 50

34. 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.

35 / 50

35. Which of the following is a direct application of fluid mechanics in the human body?

36 / 50

36. Which physical property directly causes viscosity in fluids?

37 / 50

37. Pressure at a point in a liquid depends on:

38 / 50

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

39 / 50

39. A swimmer experiences greater pressure at the bottom of a pool than near the surface because:

40 / 50

40. Which of the following is an example of shear-thinning (pseudoplastic) non-Newtonian fluid?

41 / 50

41. The equation of motion for a small sphere falling in a viscous fluid before reaching terminal velocity is:

42 / 50

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

43 / 50

43. Which of the following is an example of shear-thickening (dilatant) fluid?

44 / 50

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

45 / 50

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

46 / 50

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

47 / 50

47. Which engineering application requires minimizing cavitation (bubble collapse)?

48 / 50

48. The height of a mercury column in a barometer at sea level is about:

49 / 50

49. Which physical phenomenon proves the existence of surface energy?

50 / 50

50. Why is fluid mechanics essential in chemical engineering?

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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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