This is wrong. 
Chlorine evaporates when you boil water. 
It even evaporates when you just let water sit, but takes longer. 

I see. 
Now you see and read it. 
> Boiling water can only remove solids and bacteria, meaning it will not remove harmful substances such as chlorine and lead from tap water.
https://mytapscore.com/blogs/tips-for-taps/should-i-boil-my-tap-water

IamSINGLE

We all do. Some chemicals have high vapor pressure and can be boiled off faster than the water!