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MHT CET202416 May 2024Morning ShiftPhysicsMechanical Properties of FluidsActual

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

Options

  1. Afirst decreases and then increases.
  2. Bincreases.
  3. Cdecreases.
  4. Dremains unchanged.

Correct answer

C. decreases.

Step-by-step solution

The magnitude of the surface tension of a liquid depends on the attractive forces between the molecules. When the attractive forces are large, the surface tension is large. An increase in temperature increases the kinetic energy of the molecules, and the effectiveness of intermolecular attraction decreases. So the surface tension decreases as the temperature is raised.

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