When the temperature is raise, the viscosity of liquid decreases, this is because,

Options

A. decreased volume of liquid
B. increase in temperature increases the average kinetic energy of molecules which overcomes the attractive force between them
C. decreased covalent and hydrogen bond forces
D. increased attraction between the molecules

Answer

B

Explanation

With increase of temperature , the average kinetic energy of molecules of liquid increases. This helps them to overcome the intermolecular forces , resulting in decrease of viscosity.