Identify the incorrect statement among the fo | vedclass

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(C) The viscosity of a liquid generally decreases with an increase in temperature due to the decrease in intermolecular forces.Surface tension of a li

Vedclass · Accepted Answer

Viscosity of liquid always increases in presence of impurity.

Vedclass · Answer

(C) The viscosity of a liquid generally decreases with an increase in temperature due to the decrease in intermolecular forces.Surface tension of a liquid also decreases with an increase in temperature because the kinetic energy of molecules increases, reducing the cohesive forces.However, the effect of impurities on viscosity and surface tension is not uniform.For example, highly soluble solutes like sugar increase the viscosity of water, while some other impurities may decrease it.Similarly, surface-active agents (surfactants) decrease the surface tension of water, while inorganic salts increase it.Therefore, both statements $C$ and $D$ are incorrect as they use the word 'always'.

Identify the incorrect statement among the following:

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