Question

In most liquids, with the rise in temperature, the surface tension of a liquid ______.

Options

• remains unchanged

• decreases

• increases

• first decreases and then increases

Answer 1

In most liquids, with the rise in temperature, the surface tension of a liquid decreases.

Explanation:

The cause of dynamic viscosity in most liquids is the intermolecular force of attraction or cohesive forces, and as temperature increases, molecules of liquids try to move away from each other, reducing the cohesive force and thus decreasing dynamic viscosity in the case of liquid.