Assertion: Viscosity of liquids decreases as the temperature rises. Reason: At high temperature, molecules have high kinetic energy and can overcome the intermolecular forces to flow faster.

Question

Assertion: Viscosity of liquids decreases as the temperature rises. Reason: At high temperature, molecules have high kinetic energy and can overcome the intermolecular forces to flow faster. (A) If both assertion and reason are true and reason is the correct explanation of assertion. (B) If both assertion and reason are true but reason is not the correct explanation of assertion. (C) If assertion is true but reason is false. (D) If both assertion and reason are false.

Tardigrade Admin · Accepted Answer

When the liquid is heated the viscosity of liquid decreases. As temperature increases, there is an increase in molecular interchange as the molecules speed increases with rising in temperature. At high temperature, molecules posses high kinetic energy and thus it can overcome the intermolecular forces to flow faster.

Q. Assertion : Viscosity of liquids decreases as the temperature rises. Reason: At high temperature, molecules have high kinetic energy and can overcome the intermolecular forces to flow faster.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.

Q. Assertion : Viscosity of liquids decreases as the temperature rises.
Reason: At high temperature, molecules have high kinetic energy and can overcome the intermolecular forces to flow faster.