by pressurizing it.
One of the advantages of boiling food is you are able to cook without adding fat and calories to the food. Another advantage to boiling is the fact that it is easy.
Impurities will usually lower the melting point of an organic compound. Impurities also increase the range of melting points in the compound. This means the temperature needed for melting isn't consistent.
The higher the pressure being exerted on the water, the lower the boiling point becomes. Yes the boiling point is affected in a pressurized system. If you put water in a sealed container and kept raising the pressure it will eventually reach it's boiling point without the need of adding heat.
raise its freezing point
Salt water, but the water will stop boiling because upon adding the salt it raised the boiling point of water.
The boiling point of a liquid is the temperature at which the vapor pressure of the liquid equals the atmospheric pressure, or the pressure above the liquid. So, to increase the boiling point without adding a solute, one can increase the pressure above the liquid.
pressurize it
How can the boiling point of a liquid be raised without adding any impurity?
By adding salt it means that you are adding an impurity into the water. Impurities can lower the boiling point, while increasing its melting point.
doping
This depends on the type of this impurity.
Adding sugar to boiling water it will increase the boiling temperature very slightly
Adding of any type of impurity in water decreases its melting point. You might have studied that depression in freezing point is a "colligative" property according to which adding of any impurity to a pure liquid decreases the melting point and increases the boiling point of that liquid. So, adding of salt is not the only method of decreasing the melting point.
A non volatile impurity does not have a tendency to form a vapor at the temperature of the substance it is mixed with. For example, adding salt to boiling water does not form a vapor of any sort.
Any impurity reduce the rate of evaporation.
Doping is a process of adding some impurity in pure material or pure semiconductor.
it is like p type semiconductor because when adding impurity its conductivity decreases