Do disabling some apps free up some ram.Like Disabling Chrome in settings will free up some ram or not?
Well, yes disabling apps do frees up RAM but remember to check which app you are disabling because there aren't an number of app which is consuming most of the RAM and app like Google Chrome is something which you don't want to do, I know it consumes too much space over the RAM but I guess it's just to give you distinguishing experience which can't be observed with other browsers. Anyway disabling Chrome do works out great ! You can also try using some RAM cleaner app available over the store, it can help you in clearing the RAM periodically, so you don't need to disable the application again and again after using them out !