Advertisements
Advertisements
प्रश्न
State three differences between evaporation and boiling
Advertisements
उत्तर
| BOILING | EVAPORATION | |
|---|---|---|
| Definition of these two terms | Boiling is vaporisation of liquid into gas due to continuous heating. Most of the time it is not a natural process. | Evaporation on the other hand is a natural process and it is similar to boiling , but the liquid form changes into gaseous form when there is a increase in either temperature or pressure or both. |
| Occurrance | Large mass | only on surface |
| Amount temperature involved | Boiling happens when the temperature reaches to the boiling point. | In Evaporation the temperature does not need to reach to boiling point |
| Bubble Formation | Bubble formation is visible | Bubbles do not form in evaporation |
| Energy | Usually external source of energy is needed for boiling to happen. | Most of the time energy for evaporation is supplied by the atmosphere or surrounding. |
| Length of the process | Rapid Process | Slow process compared to boiling |
APPEARS IN
संबंधित प्रश्न
Write true or false for the statement.
Deforestation is a man-made change
Give the main differences between physical changes and chemical changes.
Give three reasons why melting of wax, is considered a physical change while burning of a candle, a chemical change.
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical change.
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
Select the chemical changes from the following list of changes
Respiration in mammals.
Name the following.
A form of energy required for a chemical change.
In a solution of salt in water, water is the solute
______ is the substance that is dissolved in a solvent.
Cutting a log of wood into pieces is a chemical change.
