Question

The viscosity of liquids ________ with increase in temperature

Answer 1

1. The resistance of a fluid to gradual deformation by shear or tensile stress is termed viscosity.
2. In the case of liquids, molecules are more closely packed when compared to gases.
3. When the temperature of a liquid rises, the energy level of molecules increases and they move farther apart from each other. Therefore, the force of intermolecular attraction decreases. This in turn reduces viscosity.

Hence, the viscosity of liquids decreases with increase in temperature