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Which one of the following statements about surface tension is correct?

Options

  1. AIt increases when temperature increases
  2. BIt decreases when temperature increases
  3. CIt will remain same with increase or decrease of temperature
  4. DIt will always decrease with increase or decrease of temperature

Correct answer

B. It decreases when temperature increases

Step-by-step solution

Surface tension is the property of a liquid that arises due to intermolecular forces of attraction between its molecules. When the temperature of a liquid increases, the kinetic energy of its molecules also increases. This increased kinetic energy helps to overcome the intermolecular forces of attraction, leading to a decrease in the cohesive forces between the molecules. Consequently, the surface tension of the liquid decreases with an increase in temperature. At the critical temperature, the surface tension becom

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