When temperature of a liquid increases, its surface tension
A
Decreases
B
Increases
C
Remain Constant
D
Increases then decreases
Verified Correct Answer: A.
Physical Principles & Numerical Solution
As temperature rises, the kinetic energy of the molecules increases, reducing the cohesive forces at the surface and leading to a decrease in surface tension.
Source: Myschool Past Questions Archive (Record #329)