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

2 / 30

2. Which of the following is an example of fluid mechanics in everyday life?

3 / 30

3. A drop of mercury (T=0.465 N/m) of radius 1 mm splits into 1000 equal droplets. Calculate increase in surface energy.

4 / 30

4. Detergents are more effective in hot water because:

5 / 30

5. A U-tube with one end open and the other sealed contains air trapped above mercury. When the open end is exposed to 76 cm pressure, mercury levels differ by 12 cm. Find pressure of trapped air.

6 / 30

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

7 / 30

7. Which of the following is NOT a limitation of Stokes’ law?

8 / 30

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

9 / 30

9. A cylindrical vessel is filled with oil () up to a height of 5 m. Find the pressure at the bottom due to oil. ()

10 / 30

10. Flow regime in a pipe for is:

11 / 30

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

12 / 30

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

13 / 30

13. Stokes’ law is not applicable when:

14 / 30

14. Capillary rise of a liquid is inversely proportional to:

15 / 30

15. Stokes’ law is valid only when the Reynolds number is:

16 / 30

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

17 / 30

17. The upward movement of water in soil pores is mainly due to:

18 / 30

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

19 / 30

19. Which of the following is NOT a limitation of Bernoulli’s theorem?

20 / 30

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

21 / 30

21. If the flow of water in a pipe has Re = 1500, the flow is:

22 / 30

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

23 / 30

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

24 / 30

24. In bubbles, why is the pressure inside greater than outside?

25 / 30

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

26 / 30

26. The pressure at the bottom of a swimming pool 3 m deep is: (Take )

27 / 30

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

28 / 30

28. Which of the following pairs correctly identifies one Newtonian and one Non-Newtonian fluid?

29 / 30

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

30 / 30

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

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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 do small liquid drops take a spherical shape?

2 / 50

2. A capillary tube of radius is dipped in water (). Assuming , calculate the rise of water in the tube.

3 / 50

3. Why are soap bubbles more stable than pure liquid bubbles?

4 / 50

4. A soap bubble of radius has excess pressure . Surface tension is measured using:

5 / 50

5. The formula for surface tension using the drop weight method is:

6 / 50

6. In which type of fluids does viscosity remain constant irrespective of applied stress?

7 / 50

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

8 / 50

8. Liquids differ from gases in their response to shear stress because:

9 / 50

9. Capillary action in soils is most important for:

10 / 50

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

11 / 50

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

12 / 50

12. Which of the following conditions is required for Stokes’ law to hold?

13 / 50

13. Which of the following correctly describes the effect of gravity on capillary rise?

14 / 50

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

15 / 50

15. 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.

16 / 50

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

17 / 50

17. How does viscosity of gases vary with temperature?

18 / 50

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

19 / 50

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

20 / 50

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

21 / 50

21. 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.

22 / 50

22. The formula for surface tension using the capillary rise method is:

23 / 50

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

24 / 50

24. When smoke from incense suddenly starts swirling after some height, it indicates flow has entered:

25 / 50

25. A hydraulic lift has a large piston of area and a small piston of area . If a car of mass 1500 kg is to be lifted, calculate minimum force on small piston.

26 / 50

26. A cylindrical tank of height 6 m is filled with water (). Find the pressure at the bottom of the tank. (Take )

27 / 50

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

28 / 50

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

29 / 50

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

30 / 50

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

31 / 50

31. The work required to blow a soap bubble of radius with surface tension is:

32 / 50

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

33 / 50

33. A soap bubble of radius is formed. Surface tension is . Calculate excess pressure inside the bubble.

34 / 50

34. A zero contact angle indicates that the liquid:

35 / 50

35. Which of the following is NOT explained by Bernoulli’s principle?

36 / 50

36. Air () flows in a duct of diameter with velocity . Calculate Reynolds number.

37 / 50

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

38 / 50

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

39 / 50

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

40 / 50

40. Water at () flows through a tube of diameter at velocity . Calculate Reynolds number.

41 / 50

41. Which of the following is an example of surface energy in daily life?

42 / 50

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

43 / 50

43. In a siphon, water rises to a height of above reservoir level before falling. What minimum velocity at outlet is required to sustain flow? ()

44 / 50

44. The SI unit of pressure is:

45 / 50

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

46 / 50

46. A tank of height is filled with water. Find the velocity of efflux from a hole above the bottom.

47 / 50

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

48 / 50

48. A pollen grain of radius settles in air. If , calculate terminal velocity.

49 / 50

49. Which law of fluid mechanics applies strictly to Newtonian fluids but not to non-Newtonian fluids?

50 / 50

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

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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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