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Statement related to the process of evaporation that is incorrect is?
Evaporation occurs at any temperature
Evaporation takes place within liquid
Temperature may change during evaporation
No bubbles are formed in liquid during evaporation
Evaporation takes place within liquid
Evaporation is a surface phenomenon where molecules with higher kinetic energy escape from the surface of a liquid into the gaseous phase. Unlike boiling, which is a bulk phenomenon occurring throughout the liquid, evaporation only happens at the liquid-air interface.
Evaporation is a surface phenomenon where molecules with higher kinetic energy escape from the surface of a liquid into the gaseous phase. Unlike boiling, which is a bulk phenomenon occurring throughout the liquid, evaporation only happens at the liquid-air interface.
E=KeтАЛ(esтАЛтИТeaтАЛ) тАФ Dalton's Law of evaporation where E is rate of evaporation, esтАЛ is saturation vapor pressure, and eaтАЛ is actual vapor pressure.
The molecules in a liquid possess a distribution of kinetic energies. Molecules near the surface that gain sufficient kinetic energy to overcome the intermolecular cohesive forces escape as vapor. This process can occur at any temperature below the boiling point, as it depends on the vapor pressure gradient at the surface.
Evaporation is a surface phenomenon.
Boiling occurs at a specific saturation temperature for a given pressure.
Latent heat of vaporization is required for the phase change.
Evaporation leads to a decrease in the internal energy of the remaining liquid.
Crucial for the hydrological cycle.
Effective for cooling processes in engineering systems.
Causes water loss in reservoirs and dams.
Increases salinity in irrigation systems.
Hydrological modeling.
Cooling towers in power plants.
Desalination processes.
| Feature | Evaporation | Boiling |
|---|---|---|
Process Type | Surface Phenomenon | Bulk Phenomenon |
Option B is incorrect because evaporation is exclusively a surface phenomenon. Boiling is the process that occurs throughout the bulk of the liquid.
Temperature changes occur during evaporation as the process extracts latent heat from the liquid, potentially lowering its temperature.
B is correct тАФ Evaporation is a surface phenomenon, not a bulk phenomenon.
In hydrology, always distinguish between 'evaporation' (from water bodies) and 'evapotranspiration' (combined from soil and plants) as they significantly affect reservoir capacity calculations.