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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 statement is TRUE about Newtonian fluids?

2 / 30

2. A cylindrical vessel is filled with oil () up to 6 m height. Find the hydrostatic pressure at the bottom. (Take )

3 / 30

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

4 / 30

4. A ball of radius is falling in a viscous fluid of viscosity . If density of sphere = , density of fluid = , calculate terminal velocity. ()

5 / 30

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

6 / 30

6. The "Lotus Effect," where water droplets roll off leaves carrying dirt, is due to:

7 / 30

7. A ball of radius falls through a fluid and attains terminal velocity of . If the viscosity of the fluid is and density of fluid = , density of ball = ?

8 / 30

8. Why do civil engineers need to study fluid mechanics?

9 / 30

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

10 / 30

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

11 / 30

11. Oil () flows in a tube of diameter at velocity . Calculate Reynolds number.

12 / 30

12. The relation between surface tension (T) and surface energy (E) is:

13 / 30

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

14 / 30

14. Which application of Bernoulli’s principle is used in carburetors of vehicles?

15 / 30

15. A U-tube manometer contains mercury (). The difference in mercury levels is . Find the pressure difference across the two arms. (g = 9.8)

16 / 30

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

17 / 30

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

18 / 30

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

19 / 30

19. A pressure of 2 atm is equivalent to:

20 / 30

20. Which of the following examples best demonstrates turbulent flow?

21 / 30

21. The SI unit of surface tension is:

22 / 30

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

23 / 30

23. In bubble dynamics, what causes a bubble to oscillate in a fluid?

24 / 30

24. Which of the following decreases the height of capillary rise?

25 / 30

25. In a hydraulic system, the input piston area is and the output piston area is . If an input force of 100 N is applied, calculate the output force.

26 / 30

26. If the angle of contact , the liquid:

27 / 30

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

28 / 30

28. For , the flow is:

29 / 30

29. The pressure at a depth in a liquid of density is given by:

30 / 30

30. The Venturi meter measures:

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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 dam is built to hold water of depth 40 m. What is the hydrostatic pressure at the base of the dam? ()

2 / 50

2. In metallurgy, why is surface tension important?

3 / 50

3. Which conversion is correct?

4 / 50

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

5 / 50

5. If the pressure difference between two points in a horizontal pipe is , and velocities are and , find the density of the fluid.

6 / 50

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

7 / 50

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

8 / 50

8. Which statement is true about streamline flow?

9 / 50

9. Why do paper towels absorb water?

10 / 50

10. In bubble dynamics, the collapse of bubbles in a liquid (cavitation) can be harmful because:

11 / 50

11. An iron ball of radius 0.1 m is immersed at 15 m depth in water. Find the pressure acting on its surface. (Take )

12 / 50

12. If air pressure at sea level is , what is the approximate air pressure at a height of 5 km? (Assume , with scale height ).

13 / 50

13. A crude oil sample has density and viscosity . If it flows with velocity in a 5 cm diameter pipe, calculate Reynolds number.

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

17. 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.

18 / 50

18. For an aircraft at high speed, turbulence is beneficial because:

19 / 50

19. Terminal velocity is defined as:

20 / 50

20. A liquid of density and viscosity flows at velocity in a pipe of diameter . Calculate Reynolds number.

21 / 50

21. The pressure difference between two points in a liquid column 10 m apart (vertical) with density is: (Take )

22 / 50

22. In Bernoulli’s derivation, work done by pressure forces on a fluid element is balanced by:

23 / 50

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

24 / 50

24. Water is flowing through a pipe of diameter with speed . The pipe narrows to . Find pressure difference between the two sections. ()

25 / 50

25. A tank is filled with two liquids: kerosene () up to 2 m and water () up to 3 m above kerosene. Calculate the pressure at the bottom. (Take )

26 / 50

26. The dimensional formula of pressure is:

27 / 50

27. A cylindrical vessel is filled with oil () up to 6 m height. Find the hydrostatic pressure at the bottom. (Take )

28 / 50

28. A steel tank is filled with oil (ρ=850). Pressure gauge at depth 2 m reads how much (in kPa)? (g=9.8)

29 / 50

29. In aerodynamics, turbulent flow over aircraft wings:

30 / 50

30. Which of the following demonstrates terminal velocity in gases?

31 / 50

31. A cube of side 20 cm is immersed in water. Find difference in pressure between top and bottom faces. (ρ=1000, g=9.8)

32 / 50

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

33 / 50

33. Which of the following is almost incompressible?

34 / 50

34. A tank is filled with water up to 4 m. A small hole is made at 1 m above the base. Find the velocity of efflux. ()

35 / 50

35. Why does a gas exert uniform pressure in all directions inside a container, unlike a liquid?

36 / 50

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

37 / 50

37. A liquid flows through a capillary tube of radius and length . If the pressure difference across the tube is and the viscosity of the liquid is , calculate the volume flow rate.

38 / 50

38. Water flows through a horizontal pipe of cross-sectional areas and . If the velocity in the wider section is , find the velocity in the narrow section.

39 / 50

39. Why does it become difficult to breathe at high altitudes?

40 / 50

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

41 / 50

41. In plant physiology, the rise of water in xylem vessels of plants is partly due to:

42 / 50

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

43 / 50

43. Which of the following is a misconception about Bernoulli’s principle?

44 / 50

44. 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 )

45 / 50

45. Atmospheric pressure decreases with altitude because:

46 / 50

46. A steel ball of radius falls through glycerine (viscosity ) with terminal velocity . Find density of steel if glycerine density is . (g = 9.8)

47 / 50

47. The velocity profile of laminar flow in a circular pipe is:

48 / 50

48. Fluids are defined as substances that:

49 / 50

49. Hydraulic brakes work efficiently because:

50 / 50

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

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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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