Que: What do you mean by VISCOSITY?






















Ans: Viscosity is the measure of the internal friction of a fluid. This friction becomes apparetn when a layer of fluid is made to move relatively to another layer. The greater the friction the greater the amount of force required to cause this movement which is called shear. Shearing occurs whenever the fluid is physically moved by pouring, spreading, spraying, mixing, etc. High viscous liquids require more force to move than less viscous liquids.