Question

Surface tension does not vary with:

• A. temperature
• B. vapour pressure
• C. surface area of liquid
• D. concentration

Answer 1

Answer: (C)

surface area of liquid

• Surface tension is defined as tensile force (down ward) acting on the molecules of the liquid at interface of liquid and vapour. This is due to unbalanced force acting on the surface molecules.
• Surface tension is caused by the effects of intermolecular forces at the interface. Surface tension depends on the nature of the liquid, the surrounding environment and temperature. Liquids were molecules have large attractive intermolecular forces will have a large surface tension.
  
• Surface tension does not vary with vary in surface area of liquid.

Hence option $C$ is correct answer.