NEET Physics: Mechanical Properties of Fluids — MCQ Test 12

Q6. Which of the following statements is correct about the angle of contact?

Q7. What is the total pressure at a depth of \( 1.8 \, \text{m} \) in oxygen liquid (\( \rho = 1.43 \, \text{kg/m}^3 \)) with atmospheric pressure \( 1.01 \times 10^5 \, \text{Pa} \)? (Take \( g = 9.8 \, \text{m/s}^2 \))

Q8. What is the gauge pressure at \( 2.5 \, \text{m} \) depth in a tank of mercury (\( \rho = 13.6 \times 10^3 \, \text{kg/m}^3 \))? (Take \( g = 10 \, \text{m/s}^2 \))

Q9. What is the gauge pressure at a depth of \( 2.4 \, \text{m} \) in whole blood (\( \rho = 1.06 \times 10^3 \, \text{kg/m}^3 \))? (Take \( g = 10 \, \text{m/s}^2 \))

Q10. A plate of area \( 0.05 \, \text{m}^2 \) moves at \( 0.7 \, \text{m/s} \) over a \( 0.8 \, \text{mm} \) thick water film (\( \eta = 1.0 \times 10^{-3} \, \text{Pa s} \)). What force is required?

NEET Physics — Mechanical Properties of Fluids

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What is the excess pressure inside a mercury drop of radius \( 2 \, \text{mm} \) at \( 20^\circ \text{C} \)? (Surface tension of mercury = \( 0.465 \, \text{N/m} \))

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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 10 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 Pressure, Statement, Incorrect, Aircraft, Difference, and Atmosphere.

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. What is the excess pressure inside a mercury drop of radius \( 2 \, \text{mm} \) at \( 20^\circ \text{C} \)? (Surface tension of mercury = \( 0.465 \, \text{N/m} \))

  • A. 232.5 Pa
  • B. 465 Pa
  • C. 930 Pa
  • D. 1860 Pa

Q2. Which statement is incorrect about surface tension?

  • A. It acts like a stretched membrane
  • B. It decreases with temperature
  • C. It increases with temperature
  • D. It causes capillary action

Q3. An aircraft (\( m = 2.8 \times 10^5 \, \text{kg} \), wing area \( 480 \, \text{m}^2 \)) flies level. What is the pressure difference across the wings? (Take \( g = 9.8 \, \text{m/s}^2 \))

  • A. 5500 Pa
  • B. 5717 Pa
  • C. 6000 Pa
  • D. 6200 Pa

Q4. A tank has a hole \( 1.3 \, \text{m} \) below the water surface, open to the atmosphere. What is the efflux speed? (Take \( g = 9.8 \, \text{m/s}^2 \))

  • A. 4.5 m/s
  • B. 5.0 m/s
  • C. 5.5 m/s
  • D. 6.0 m/s

Q5. Why does adding a wetting agent like soap reduce the angle of contact of water on a surface?

  • A. It increases viscosity
  • B. It reduces surface tension
  • C. It increases pressure
  • D. It decreases density

+ 5 more questions in the actual test

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