Q1: 1. What is the SI unit of viscosity?

• A) Pascal second
• B) Newton per square meter
• C) Watt per meter Kelvin
• D) Joule per second

Q2: 2. Which of the following is a unit of surface tension?

• A) Newton
• B) Pascal
• C) Joule per meter squared
• D) Kilogram per cubic meter

Q3: 3. What causes a liquid to rise in a capillary tube?

• A) Surface tension
• B) Viscosity
• C) Density
• D) Pressure

Q4: 4. Which property of a fluid allows it to flow easily?

• A) Viscosity
• B) Surface tension
• C) Density
• D) Compressibility

Q5: 5. The pressure difference between two points in a liquid column is directly proportional to

• A) The density of the liquid
• B) The acceleration due to gravity
• C) The height of the liquid column
• D) The surface tension of the liquid

Q6: 6. Which property of a fluid determines its ability to resist deformation under stress?

• A) Viscosity
• B) Surface tension
• C) Compressibility
• D) Bulk modulus

Q7: 7. What is the effect of temperature on the viscosity of a fluid?

• A) Viscosity increases with temperature
• B) Viscosity decreases with temperature
• C) Viscosity remains constant with temperature
• D) Viscosity is not affected by temperature

Q8: 8. Which property of a fluid is responsible for the upward thrust on a submerged object?

• A) Viscosity
• B) Pressure
• C) Buoyancy
• D) Surface tension

Q9: 9. Which law states that the pressure in a fluid at rest is the same at all points at the same height?

• A) Pascal's law
• B) Archimedes' principle
• C) Bernoulli's principle
• D) Torricelli's theorem

Q10: 10. A person feels lighter while swimming in a pool due to

• A) Viscosity of water
• B) Buoyant force
• C) Surface tension of water
• D) Pressure at a depth

Q11: 11. The viscosity of a fluid is a measure of its resistance to

• A) Deformation
• B) Compression
• C) Expansion
• D) Buoyancy

Q12: 12. Which property of a fluid determines its ability to flow smoothly?

• A) Surface tension
• B) Compressibility
• C) Viscosity
• D) Density

Q13: 13. The pressure at the bottom of a liquid container depends on

• A) The area of the container
• B) The density of the liquid
• C) The shape of the container
• D) The mass of the liquid

Q14: 14. A soap bubble tends to minimize its surface area due to

• A) Viscosity
• B) Buoyancy
• C) Surface tension
• D) Pressure

Q15: 15. Which property of a fluid is responsible for the capillary action in plants?

• A) Viscosity
• B) Buoyancy
• C) Surface tension
• D) Pressure

Q16: 16. The pressure at a point in a fluid at rest is

• A) Directly proportional to the volume of the fluid
• B) Inversely proportional to the height of the fluid column
• C) Independent of the density of the fluid
• D) The same in all directions

Q17: 17. The weight of an object in a fluid is equal to the

• A) Volume of the fluid displaced
• B) Density of the object
• C) Pressure exerted by the object
• D) Buoyant force acting on the object

Q18: 18. Which of the following properties of a fluid is affected by the presence of impurities?

• A) Viscosity
• B) Surface tension
• C) Pressure
• D) Density

Q19: 19. The ability of a fluid to transmit pressure uniformly in all directions is described by

• A) Archimedes' principle
• B) Pascal's law
• C) Bernoulli's equation
• D) Torricelli's theorem

Q20: 20. The phenomenon of a liquid flowing faster in a narrower pipe is an example of

• A) Viscosity
• B) Compressibility
• C) Bernoulli's principle
• D) Surface tension

Q21: 21. The force required to move a solid object through a fluid is affected by the

• A) Viscosity of the fluid
• B) Density of the object
• C) Surface tension of the fluid
• D) Buoyant force acting on the object

Q22: 22. A hot air balloon rises in the sky due to

• A) Viscosity of air
• B) Pressure difference
• C) Buoyant force
• D) Surface tension of air

Q23: 23. The property of a fluid that determines its ability to flow smoothly past an obstacle is

• A) Viscosity
• B) Surface tension
• C) Pressure
• D) Density

Q24: 24. The reason behind the formation of water droplets on a glass surface is

• A) Viscosity
• B) Buoyancy
• C) Surface tension
• D) Pressure

Q25: 25. The pressure exerted by a fluid on the walls of its container is dependent on

• A) The temperature of the fluid
• B) The volume of the fluid
• C) The density of the fluid
• D) The mass of the fluid