Certified Lubrication Specialist Practice Test

Viscosity is the fluid's resistance to flow.

Fluid's resistance to flow Thermal conductivity Evaporation tendency Precipitation point

Correct Answer:

Fluid's resistance to flow

Explanation:

Viscosity is the fluid's resistance to flow. It measures the internal friction that occurs as layers of liquid slide past one another, which determines how easily the fluid moves and how thick a lubricating film it can maintain under shear. This directly matches the statement about viscosity. The other properties describe something different: thermal conductivity is about how well heat transfers through the liquid, evaporation tendency refers to how readily the liquid vaporizes (volatility), and the precipitation point relates to when solids come out of solution or the liquid freezes and stops flowing. These are not measures of flow resistance, so they don’t define viscosity.

Access more questions from this quiz

Continue to Certified Lubrication Specialist Practice Test for more practice questions and the full quiz experience.

Access More Questions