Super Cooling, Relegation | Evaporation and Boiling | Physics Grade XI

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Super Cooling, Relegation | Evaporation and Boiling | Physics Grade XI

Super Cooling, Relegation | Evaporation and Boiling

Super Cooling
When a liquid is cooled gently, it is found experimentally that the liquid may cool even several degrees below its freezing point without solidification. Such a liquid at a temperature below its freezing point is called super cool liquid.

Relegation: The phenomenon of melting of ice due to compression and freezing after removal of applied pressure is called relegation.

Evaporation and Boiling
The slow and silent conversion of a liquid unto the gaseous state at all temperature is called evaporation. Boiling or Ebullition is a rapid and noisy process in which conversion of a liquid into the vapor state takes place.

Evaporation

Boiling

It is the slow and silent process of converting liquid into a vapor state.

It is rapid and noisy process of converting liquid into vapor state

It takes place in all temperature

It takes place in a particular temperature

It takes place at surface of liquid

It takes place throughout the volume of liquid

Cooling effect is observed

Cooling effect is not observed

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