How long does it take for chlorine to evaporate from tap water?

If your city uses the free-chlorine method, then off-gassing will be quick, you could generally allow 12-24 hours. I found out the hard way that off-gassing the chlorine in tap water by just letting it sit is not good enough if you are using the water in a fish tank.

If you open the bottle of perfume then nothing but the smell will come out of it and yes it is a type of gas smell because it’s say it in english so i can understand better and you

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.