CHEMCO Exit Exam • Set 15 Question 21 of 30

The product of coefficient of viscosity, surface area and the velocity difference between layers of flowing liquid is

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Direct Answer

Option B: Force of friction between liquid layers

This describes Newton's Law of Viscosity, where the force of friction (shear force) between liquid layers is directly proportional to the coefficient of viscosity, the contact surface area, and the velocity gradient (velocity difference between layers). This principle governs fluid flow and pumping efficiency.

All Options

Viscosity of Liquid

Force of friction between liquid layers (Correct Answer)

Velocity of the fluid

Vapor pressure of liquid

Detailed Explanation & Context

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).

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