Mechanical Properties of Fluids MCQs
Mechanical Properties of Fluids MCQs
Class: CBSE Class 11
Subject: Physics
Section: Properties of Bulk Matter
Topic: Mechanical Properties of Fluids MCQs
Board: CBSE Board Examination (Strictly NCERT Based)
Subject: Physics
Section: Properties of Bulk Matter
Topic: Mechanical Properties of Fluids MCQs
Board: CBSE Board Examination (Strictly NCERT Based)
Q1. Pressure is defined as:
Answer: B
Explanation: Pressure = Force per unit area.
Explanation: Pressure = Force per unit area.
Q2. SI unit of pressure:
Answer: Pascal
Explanation: 1 Pa = 1 N/m².
Explanation: 1 Pa = 1 N/m².
Q3. Pressure in fluid increases with:
Answer: Depth
Explanation: P = ρgh.
Explanation: P = ρgh.
Q4. Pascal’s law relates to:
Answer: A
Explanation: Pressure applied is transmitted equally.
Explanation: Pressure applied is transmitted equally.
Q5. Buoyant force given by:
Answer: B
Explanation: Upthrust = weight of displaced fluid.
Explanation: Upthrust = weight of displaced fluid.
Q6. Archimedes principle states:
Answer: Buoyant force equals displaced fluid weight.
Q7. Density unit:
Answer: kg/m³.
Q8. Relative density no unit because:
Answer: Ratio of densities.
Q9. Floatation condition:
Answer: Weight = Upthrust.
Q10. Hydrometer measures:
Answer: Relative density.
Q11. Viscosity unit:
Answer: Poiseuille / Pa·s.
Q12. Streamline flow is:
Answer: Laminar flow.
Q13. Reynolds number indicates:
Answer: Flow nature.
Q14. Bernoulli principle relates:
Answer: Pressure & velocity.
Q15. Venturimeter measures:
Answer: Fluid flow speed.
Q16. Surface tension unit:
Answer: N/m.
Q17. Surface tension due to:
Answer: Cohesive forces.
Q18. Capillary rise depends on:
Answer: Tube radius.
Q19. Narrow tube rise:
Answer: More.
Q20. Detergent reduces:
Answer: Surface tension.
Q21. Viscosity higher in:
Answer: Honey.
Q22. Ideal fluid viscosity:
Answer: Zero.
Q23. Pressure at same depth:
Answer: Same.
Q24. Hydraulic lift uses:
Answer: Pascal’s law.
Q25. Blood flow obeys:
Answer: Bernoulli principle.
Q26. Terminal velocity occurs when:
Answer: Net force zero.
Q27. Oil spreads on water due to:
Answer: Surface tension difference.
Q28. Pressure dimension:
Answer: ML⁻¹T⁻².
Q29. Streamline flow occurs at:
Answer: Low velocity.
Q30. Airplane lift due to:
Answer: Bernoulli effect.
