Does the boiling point of water increase or decrease with impurities?
Boiling point of water increases with impurities. I might also mention here that the freezing point of water decreases with impurities. You must have noticed that you can melt ice by pouring salt on it. Incidentally this is the method used to melt away sheet ice on roads in cold winters in America and other cold countries. You must have also noticed that traditional Kulfi makers put salt on the ice surrounding the containers of liquid Kulfi mix. Melted water is as cold as the ice and has a better contact with the Kulfi containers. Why do swimmers wear special headgear during swimming competitions? When you are in a serious competition you want to reduce as much friction as possible. During swimming as also during cycling when you have to plow through water or air it is helpful to wear things that would reduce the surface friction as much as possible. That is the reason you wear caps and dresses that can allow you to glide through. Even the surface quality of the fabric can make a diffe
