You are given a sample of water . How will you find out whether it is pure or not ?
You can simply boil the water to find out whether the water given is pure or impure. If nothing is left behind in the vessel after all the water has been evaporated, then the water is pure and if something has left behind in the vessel after complete evaporation, then the water is impure.
@all: very good attempt. keep it up! Thumbs up!