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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 force resists the expansion of a soap bubble?

2 / 30

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

3 / 30

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

4 / 30

4. A zero contact angle indicates that the liquid:

5 / 30

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

6 / 30

6. Air () flows with velocity through a pipe of diameter . Find Reynolds number.

7 / 30

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

8 / 30

8. Which of the following assumptions is made in deriving Stokes’ law?

9 / 30

9. In Bernoulli’s equation, the potential energy per unit volume is expressed as:

10 / 30

10. 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.

11 / 30

11. In turbulent flow:

12 / 30

12. In which of the following medical technologies is fluid mechanics most relevant?

13 / 30

13. Which of the following methods is commonly used to measure surface tension of a liquid?

14 / 30

14. A liquid has viscosity and density . Calculate its kinematic viscosity.

15 / 30

15. Which of the following fluid mechanics concepts is applied in the working of a carburetor in automobiles?

16 / 30

16. Why is fluid mechanics essential in chemical engineering?

17 / 30

17. A 4 cm radius pipe carries water at 2 m/s. It branches into two pipes each of radius 2 cm. Find velocity in each branch.

18 / 30

18. A fluid with density and viscosity flows at velocity through a pipe of diameter . Calculate the Reynolds number.

19 / 30

19. The cleaning action of detergents is mainly due to:

20 / 30

20. If viscosity of fluid increases, terminal velocity:

21 / 30

21. The SI unit of viscosity is:

22 / 30

22. In soil, capillary rise is more effective when:

23 / 30

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

24 / 30

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

25 / 30

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

26 / 30

26. Hydrostatic pressure inside a liquid column increases:

27 / 30

27. Stokes’ law is applied in sedimentation to:

28 / 30

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

29 / 30

29. Which of the following is a limitation of Bernoulli’s principle?

30 / 30

30. 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.

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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. Air () flows with velocity through a pipe of diameter . Find Reynolds number.

2 / 50

2. Which of the following fluids is often modeled as non-Newtonian in biological studies?

3 / 50

3. 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.

4 / 50

4. Why can’t water be used in barometers instead of mercury?

5 / 50

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

6 / 50

6. For Reynolds number equal to 2500, the flow regime is:

7 / 50

7. Why do parachutes slow down a falling person?

8 / 50

8. Which of the following is NOT a unit of pressure?

9 / 50

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

10 / 50

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

11 / 50

11. In an Ostwald viscometer, the viscosity of a liquid is determined relative to:

12 / 50

12. Which relation expresses the effect of temperature on viscosity of liquids (Arrhenius relation)?

13 / 50

13. Flow regime in a pipe for is:

14 / 50

14. Which of the following is NOT correct about viscosity?

15 / 50

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

16 / 50

16. Bernoulli’s equation can be written as:

17 / 50

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

18 / 50

18. A spherical ball of radius 0.5 cm and density 8000 falls in water (ρ=1000). Terminal velocity = 5 cm/s. Find viscosity of water.

19 / 50

19. A container holds water of density up to a height of 4 m. What is the pressure at the bottom of the container due to water? (Take )

20 / 50

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

21 / 50

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

22 / 50

22. The angle of contact between pure water and clean glass is approximately:

23 / 50

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

24 / 50

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

25 / 50

25. In a hydraulic press, the input piston has an area of and the output piston has an area of . If a force of 150 N is applied on the small piston, calculate the force on the large piston.

26 / 50

26. Which of the following correctly explains the working of hydraulic jacks?

27 / 50

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

28 / 50

28. Which statement is correct about atmospheric pressure with altitude?

29 / 50

29. Density () of a fluid is defined as:

30 / 50

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

31 / 50

31. Why are hydraulic systems more efficient than mechanical lever systems?

32 / 50

32. Which statement is correct about the relation between surface tension and surface energy?

33 / 50

33. The condition for reaching terminal velocity depends strongly on:

34 / 50

34. A horizontal pipe carries water with a speed of at pressure . At a constriction, speed rises to . Find pressure at the constriction. ()

35 / 50

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

36 / 50

36. The primary role of detergents in reducing surface tension is:

37 / 50

37. The derivation of Bernoulli’s equation starts with which fundamental law?

38 / 50

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

39 / 50

39. Bernoulli’s equation relates to which type of flow?

40 / 50

40. Stokes’ law assumes the liquid is:

41 / 50

41. Bernoulli’s principle does not apply in which of the following cases?

42 / 50

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

43 / 50

43. In detergent cleaning, grease is removed because:

44 / 50

44. In carburetors, the Venturi effect helps by:

45 / 50

45. In Bernoulli’s equation, the potential energy per unit volume is expressed as:

46 / 50

46. A barometer reads 74 cm of Hg in a city. What is the atmospheric pressure in pascals? (Take , )

47 / 50

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

48 / 50

48. When detergent is added to water, the angle of contact with glass:

49 / 50

49. A force of 50 N acts on a surface of area 0.25 m. What is the pressure exerted?

50 / 50

50. A gas exerts a pressure of . If the force exerted is 500 N, calculate the area of the surface.

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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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