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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 is NOT a unit of pressure?

2 / 30

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

3 / 30

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

4 / 30

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

5 / 30

5. Derivation of Stokes’ law involves solving which type of fluid equations?

6 / 30

6. In medical applications, the Venturi mask works on the Venturi effect to:

7 / 30

7. Detergents help in cleaning action because they:

8 / 30

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

9 / 30

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

10 / 30

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

11 / 30

11. When two soap bubbles of equal size coalesce, the surface energy:

12 / 30

12. A container has a liquid of density up to 2.5 m height. Find the pressure at the bottom due to the liquid. (Take )

13 / 30

13. Which factor is neglected in Bernoulli’s principle but is important in real-world flows?

14 / 30

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

15 / 30

15. 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 )

16 / 30

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

17 / 30

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

18 / 30

18. In lubrication systems, flow usually belongs to which regime?

19 / 30

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

20 / 30

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

21 / 30

21. Which principle of fluid mechanics is applied in hydraulic brakes of automobiles?

22 / 30

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

23 / 30

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

24 / 30

24. A horizontal pipe carries oil (). At one end velocity is , pressure . At another end velocity is . Find pressure.

25 / 30

25. Which of the following phenomena is influenced by reduction of surface tension at high temperature?

26 / 30

26. The design of submarines is mainly based on:

27 / 30

27. Who introduced the concept of Reynolds number through an experiment on flow visualization?

28 / 30

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

29 / 30

29. A capillary tube of radius dipped in kerosene (T = 0.025 N/m, ρ = 800). Find height rise. ()

30 / 30

30. The instrument used in aircrafts to measure altitude based on atmospheric pressure is:

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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. Which of the following demonstrates terminal velocity in gases?

2 / 50

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

3 / 50

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

4 / 50

4. Which of the following factors affects the angle of contact?

5 / 50

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

6 / 50

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

7 / 50

7. Which factor determines the curvature of a liquid drop?

8 / 50

8. A pressure of 2 atm is equivalent to:

9 / 50

9. How does fluid mechanics help in environmental studies?

10 / 50

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

11 / 50

11. Which part of a detergent molecule lowers water’s surface tension?

12 / 50

12. If surface tension of water decreases due to soap solution, then capillary rise:

13 / 50

13. In fluid mechanics, the constant velocity reached by an air bubble rising in water is also called:

14 / 50

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

15 / 50

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

16 / 50

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

17 / 50

17. The pressure difference between two depths in water at 8 m and 12 m is: (Take )

18 / 50

18. Which of the following is a characteristic of streamline (laminar) flow?

19 / 50

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

20 / 50

20. In Poiseuille’s equation, the flow rate through a capillary depends most strongly on:

21 / 50

21. Kerosene oil of density and viscosity flows through a pipe of diameter with velocity . Calculate Reynolds number.

22 / 50

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

23 / 50

23. In lubrication systems, flow usually belongs to which regime?

24 / 50

24. Why is surface chemistry important in corrosion studies?

25 / 50

25. Why does hot water clean better than cold water?

26 / 50

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

27 / 50

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

28 / 50

28. If surface tension of water decreases due to detergent, the shape of droplets formed will be:

29 / 50

29. Atmospheric pressure decreases with altitude because:

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

33. Flow regime in a pipe for is:

34 / 50

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

35 / 50

35. Which of the following phenomena is due to poor wetting?

36 / 50

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

37 / 50

37. The master piston of a hydraulic brake has an area of . If the driver applies a force of 50 N, what pressure is transmitted to the brake fluid?

38 / 50

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

39 / 50

39. How does viscosity of gases vary with temperature?

40 / 50

40. Why does dishwashing become more effective with hot water and detergent?

41 / 50

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

42 / 50

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

43 / 50

43. A velocity of is observed at the throat of a Venturi meter with inlet velocity . Find the pressure difference. ()

44 / 50

44. Why do sandy soils drain water quickly compared to clay soils?

45 / 50

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

46 / 50

46. 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?

47 / 50

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

48 / 50

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

49 / 50

49. Which of the following explains why tall buildings use water tanks at the top for water supply?

50 / 50

50. 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.

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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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