Mechanical Properties Of Fluids Online Test | Exam Bashed

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

2 / 30

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

3 / 30

3. Which of the following is a practical application of turbulent flow in aerodynamics?

4 / 30

4. If a steel ball of radius 0.01 m falls through oil with viscosity 0.2 Pa·s at a velocity of 0.05 m/s, find the viscous drag force.

5 / 30

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

6 / 30

6. Why can some insects walk on the surface of water?

7 / 30

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

8 / 30

8. A simple U-tube manometer contains mercury and is connected to a gas container. If the mercury level difference between two arms is 20 cm and the atmospheric pressure is 76 cm Hg, then the gas pressure is:

9 / 30

9. A horizontal Venturi tube has diameters of and . If velocity at the wide end is , find velocity at the throat.

10 / 30

10. How does viscosity of liquids vary with temperature?

11 / 30

11. At the critical temperature of a liquid, surface tension becomes:

12 / 30

12. In aerodynamics, turbulent flow over aircraft wings:

13 / 30

13. A soap bubble of diameter has surface tension . Find excess pressure inside.

14 / 30

14. A hydraulic jack has an input piston of radius 2 cm and an output piston of radius 20 cm. If a force of 100 N is applied on the smaller piston, find the output force.

15 / 30

15. Glycerin () flows at velocity through a tube of diameter . Calculate Reynolds number.

16 / 30

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

17 / 30

17. Waterproof jackets are designed by making fabric surfaces:

18 / 30

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

19 / 30

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

20 / 30

20. In droplet formation, why does oil form smaller droplets compared to water when shaken?

21 / 30

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

22 / 30

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

23 / 30

23. In the atmosphere, the variation of pressure with height is approximately:

24 / 30

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

25 / 30

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

26 / 30

26. Stokes’ law is valid only when the motion of the sphere takes place under:

27 / 30

27. Why does stretching a soap film require energy?

28 / 30

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

29 / 30

29. A cube of side 0.2 m is immersed fully in water. If water density is , calculate the force acting on the top face at depth 2 m. (Take )

30 / 30

30. Which statement is correct regarding temperature and viscosity?

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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!

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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. How does fluid mechanics help in environmental studies?

2 / 50

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

3 / 50

3. A horizontal pipe has two sections of diameters and . If velocity at the wider end is , find velocity at the narrow end.

4 / 50

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

5 / 50

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

6 / 50

6. If a flow in a pipe has , it is classified as:

7 / 50

7. In a capillary tube viscometer, the volume flow rate for laminar flow is given by:

8 / 50

8. If particle shape deviates significantly from a sphere, Stokes’ law:

9 / 50

9. A ball falling in a viscous fluid attains terminal velocity faster if:

10 / 50

10. 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.

11 / 50

11. The hydrostatic pressure at 10 m depth in mercury is: ()

12 / 50

12. At very low temperatures, surface tension of liquids is generally:

13 / 50

13. A steel ball of radius is falling through glycerin of viscosity . The densities of steel and glycerin are and . Calculate its terminal velocity. ()

14 / 50

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

15 / 50

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

16 / 50

16. Why do paper towels absorb water?

17 / 50

17. Which of the following summarizes the overall importance of studying fluid mechanics?

18 / 50

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

19 / 50

19. In sedimentation analysis, the viscosity of the medium must be known because:

20 / 50

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

21 / 50

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

22 / 50

22. A U-tube is filled with water on one side and mercury () on the other side. If water column height is 1.36 m, find the equivalent height of mercury column.

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

26. The height of water column in a barometer tube is 10 m. If replaced with mercury, what will be the height? ()

27 / 50

27. Water on a wax-coated leaf shows contact angle closer to:

28 / 50

28. Water flows through a horizontal pipe of cross-sectional areas and . The pressure difference between these sections is . Find the flow rate of water. ()

29 / 50

29. Which of the following is NOT included in the derivation of Stokes’ law?

30 / 50

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

31 / 50

31. Which of the following indicates that terminal velocity has been reached?

32 / 50

32. An acute contact angle () means:

33 / 50

33. Capillary action in soil helps plants absorb water because:

34 / 50

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

35 / 50

35. An air bubble rises from the bottom of a lake 40 m deep. If atmospheric pressure is , find the pressure inside the bubble at the bottom. (Take )

36 / 50

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

37 / 50

37. How does viscosity of gases vary with temperature?

38 / 50

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

39 / 50

39. 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 )

40 / 50

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

41 / 50

41. A spherical raindrop of radius 2 mm falls with terminal velocity 0.5 m/s. Find viscosity of air. (ρwater = 1000, ρair negligible)

42 / 50

42. Capillary action is the phenomenon in which:

43 / 50

43. A Venturi meter has a throat diameter of 0.1 m and main diameter of 0.2 m. If pressure drop is , calculate discharge. ()

44 / 50

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

45 / 50

45. 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.

46 / 50

46. Why do parachutes slow down a falling person?

47 / 50

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

48 / 50

48. A spherical soap bubble of radius requires work of to be formed. Find surface tension.

49 / 50

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

50 / 50

50. In detergent cleaning, grease is removed because:

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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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