Properties of Fluid MCQs – Part 6

5 questions. Tap an option to check it instantly, then read the solution.

Question 76Easy

Which of the following is the unit of kinematic viscosity:

Answer: C. Stoke

Stoke (cm²/s) is the CGS unit of kinematic viscosity (1 stoke = 10⁻⁴ m²/s).

Question 77Easy

An ideal fluid:

Answer: B. is both incompressible and non-viscous

An ideal fluid is theoretical and defined as having both zero viscosity (frictionless) and zero compressibility (constant density).

Question 78Easy

Which of the following meters is not associated with viscosity:

Answer: D. Orsat

Redwood, Saybolt, and Engler are commercial viscometers; the Orsat apparatus is used for flue gas chemical analysis.

Question 79Easy

An ideal fluid is:

Answer: B. Frictionless and incompressible

An ideal fluid is defined as frictionless (non-viscous) and incompressible.

Question 80Easy

Newton's law of viscosity relates to:

Answer: B. viscosity and rate of angular deformation

Newton's law links shear stress, viscosity, and rate of angular deformation: τ = μ(dθ/dt) = μ(du/dy). Answer (b) matches the official book key.