NEET Physics: Mechanical Properties of Fluids — MCQ Test 9

Q6. What is the gauge pressure at a depth of \( 3.5 \, \text{m} \) in seawater (\( \rho = 1.03 \times 10^3 \, \text{kg/m}^3 \))? (Take \( g = 10 \, \text{m/s}^2 \))

Q7. What is the significance of the term \( \rho g h \) in the pressure equation for a fluid at rest?

Q8. A manometer with seawater (\( \rho = 1.03 \times 10^3 \, \text{kg/m}^3 \)) shows a height difference of \( 0.22 \, \text{m} \). What is the pressure difference? (Take \( g = 9.8 \, \text{m/s}^2 \))

Q9. What is the total pressure at a depth of \( 3.6 \, \text{m} \) in mercury (\( \rho = 13.6 \times 10^3 \, \text{kg/m}^3 \)) with atmospheric pressure \( 1.01 \times 10^5 \, \text{Pa} \)? (Take \( g = 9.8 \, \text{m/s}^2 \))

Q10. Which of the following statements is correct about a liquid drop?

Q11. A pipe’s cross-sectional area changes from \( 0.1 \, \text{m}^2 \) to \( 0.025 \, \text{m}^2 \). If water flows at \( 2.2 \, \text{m/s} \) in the larger section, what is the speed in the smaller section?

Q12. Why does water rise in a capillary tube against gravity?

Q13. A manometer with mercury (\( \rho = 13.6 \times 10^3 \, \text{kg/m}^3 \)) shows a height difference of \( 0.28 \, \text{m} \). What is the pressure difference? (Take \( g = 10 \, \text{m/s}^2 \))

Q14. A pipe narrows from \( 0.06 \, \text{m}^2 \) to \( 0.02 \, \text{m}^2 \). If water flows at \( 1.8 \, \text{m/s} \) in the wider section, what is the speed in the narrower section?

Q15. Why does a spinning ball deviate from a straight path in air, as explained by the Magnus effect?

NEET Physics — Mechanical Properties of Fluids

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Which of the following statements is correct about viscosity?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Mechanical Properties of Fluids. It contains 15 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Following, Statements, Viscosity, Hydraulic, Bernoulli, and Principle.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. Which of the following statements is correct about viscosity?

  • A. It increases with temperature in liquids
  • B. It measures resistance to flow
  • C. It is independent of shear stress
  • D. It decreases with density

Q2. A hydraulic lift raises a \( 1800 \, \text{kg} \) load using a small piston of radius \( 3 \, \text{cm} \) and a large piston of radius \( 15 \, \text{cm} \). What force is applied on the small piston? (Take \( g = 9.8 \, \text{m/s}^2 \))

  • A. 600 N
  • B. 706 N
  • C. 800 N
  • D. 900 N

Q3. Why does Bernoulli’s principle not apply to fluids with high viscosity?

  • A. It applies only to turbulent flow
  • B. Viscosity causes energy loss due to friction
  • C. High viscosity increases pressure
  • D. It requires compressibility

Q4. A plate of area \( 0.07 \, \text{m}^2 \) moves at \( 0.6 \, \text{m/s} \) over a \( 0.9 \, \text{mm} \) thick machine oil film (\( \eta = 0.113 \, \text{Pa s} \)). What force is required?

  • A. 4.8 N
  • B. 5.0 N
  • C. 5.3 N
  • D. 5.5 N

Q5. Why does atmospheric pressure decrease with altitude?

  • A. Increased viscosity
  • B. Higher temperature
  • C. Less air column weight
  • D. Reduced turbulence

+ 10 more questions in the actual test

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