Q. 135.0( 2 Votes )
How does the surface tension of a liquid vary with increase in temperature?
A. Remains the same
D. No regular pattern is followed
SURFACE TENSION is defined as the force acting per unit length perpendicular to the line drawn on the surface of liquid. The surface tension arises due to the attraction of the particle in a bulk in the surface layer of the liquid which minimizes the surface area. Increase in temperature, the kinetic energy of liquid molecule increases, which decreases intermolecular forces. It results from a decrease in inward force or pulling on the surface of liquid. So, surface tension decreases with increase in temperature.
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