Practical Applications of Viscosity - QS Study
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The importance of viscosity can be understood from the following examples.

(i) The knowledge of coefficient of viscosity of organic liquids is used to determine their molecular weights.

(ii) The knowledge of coefficient of viscosity and its variation with temperature helps us to choose a suitable lubricant for specific machines. In light machinery thin oils (example, lubricant oil used in clocks) with low viscosity is used. In heavy machinery, highly viscous oils (example: grease) are used.

(iii) The viscosity of few medications, such as the various liquids used to remove warts, has also been modified for easier application.