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  4. When the temperature increases, the viscosity of

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Q. When the temperature increases, the viscosity of

J & K CETJ & K CET 2006Mechanical Properties of Fluids

Solution:

Viscosity in gases arises principally from the molecular diffusion that transports momentum between layers of flow. For gases viscosity increases as temperature increases, while in liquids the additional force between molecules become important, hence viscosity tends to fall as temperature increases.