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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 aviation effect is partly explained by the Venturi principle?

2 / 30

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

3 / 30

3. Which conversion is correct?

4 / 30

4. A hydraulic machine has two pistons. The small piston has an area of and the large piston has an area of . If a force of 100 N is applied on the small piston, calculate the force produced on the large piston.

5 / 30

5. Which statement is correct regarding temperature and viscosity?

6 / 30

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

7 / 30

7. The critical Reynolds number range for transition between laminar and turbulent flow is:

8 / 30

8. The reason why larger raindrops fall faster than smaller ones is:

9 / 30

9. A zero contact angle indicates that the liquid:

10 / 30

10. Why does a fast-moving train cause nearby objects to be pulled towards it?

11 / 30

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

12 / 30

12. The variation of surface tension with temperature can be expressed as:

13 / 30

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

14 / 30

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

15 / 30

15. Which real-life example demonstrates both Pascal’s principle and hydraulic system application?

16 / 30

16. 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:

17 / 30

17. A mountain climber at 6000 m experiences reduced pressure compared to sea level. This reduction occurs because:

18 / 30

18. A liquid of density and viscosity flows with velocity in a pipe of diameter . Find Reynolds number.

19 / 30

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

20 / 30

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

21 / 30

21. If a diver is 20 m below the surface of freshwater (), what is the pressure due to water at that depth? (Take )

22 / 30

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

23 / 30

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

24 / 30

24. 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 )

25 / 30

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

26 / 30

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

27 / 30

27. The smoke rising straight from an incense stick is an example of which regime?

28 / 30

28. Hydraulic brakes work efficiently because:

29 / 30

29. Oil () flows at velocity in a 0.05 m pipe. Calculate Reynolds number.

30 / 30

30. The working of a perfume spray is based on:

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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. The spherical shape of small liquid drops is due to:

2 / 50

2. If the pressure at the bottom of a lake is , calculate the depth of the lake. ()

3 / 50

3. A sphere of radius falls through glycerin with a terminal velocity of . If the density of the sphere is and the density of glycerin is , calculate the viscosity of glycerin. (Take )

4 / 50

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

5 / 50

5. Hydrostatic pressure at a depth in a liquid of density is given by:

6 / 50

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

7 / 50

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

8 / 50

8. Why do paper towels absorb water?

9 / 50

9. A falling sphere in a viscous fluid reaches terminal velocity when:

10 / 50

10. When smoke rising from incense sticks changes from smooth to irregular, it indicates transition from:

11 / 50

11. 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)

12 / 50

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

13 / 50

13. Which of the following conditions favors transition to turbulence?

14 / 50

14. Why does mercury depress in a glass capillary tube?

15 / 50

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

16 / 50

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

17 / 50

17. For water in a clean glass tube, the meniscus is concave because:

18 / 50

18. The height of liquid rise in a capillary is given by:

19 / 50

19. Effect of pressure on viscosity of gases is generally:

20 / 50

20. Air () flows with velocity in a duct of diameter . Find Reynolds number.

21 / 50

21. The work required to double the surface area of a soap film of area and surface tension is:

22 / 50

22. A gas flows at in a duct of diameter . If density = and viscosity = , calculate Reynolds number.

23 / 50

23. Why do detergents make clothes easier to wash?

24 / 50

24. A glycerin flow experiment uses a tube of diameter , velocity , viscosity , density . Find Reynolds number.

25 / 50

25. In a Venturi meter, diameters of inlet and throat are 0.3 m and 0.15 m. If pressure difference is , calculate flow rate of water. ()

26 / 50

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

27 / 50

27. When a small sphere falls in a viscous fluid, it eventually reaches terminal velocity because:

28 / 50

28. Bernoulli’s principle states that in a steady, incompressible, and non-viscous fluid flow:

29 / 50

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

30 / 50

30. Nanomaterials such as self-cleaning glass (Lotus effect) rely on:

31 / 50

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

32 / 50

32. A raindrop of radius falls through air (, ). If water density is , find its terminal velocity.

33 / 50

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

34 / 50

34. The ability of oil to spread over water is due to:

35 / 50

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

36 / 50

36. The hydrophilic part of a detergent molecule is:

37 / 50

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

38 / 50

38. Which condition leads to maximum capillary rise?

39 / 50

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

40 / 50

40. In carburetors, the Venturi effect helps by:

41 / 50

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

42 / 50

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

43 / 50

43. Detergents are more effective in hot water because:

44 / 50

44. In turbulent pipe flow, the velocity profile is:

45 / 50

45. Bernoulli’s equation can be written as:

46 / 50

46. A tank contains oil of density . If the depth of oil is 3 m, what pressure does it exert at the bottom? (Take )

47 / 50

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

48 / 50

48. Surface energy of a liquid surface is defined as:

49 / 50

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

50 / 50

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

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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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