Keybinding to change Major Mode according to file type

[Christopher Dimech]

Can one use keybinding such as f2 loads the bluffer in Major Mode dependent on 
the file type.

Example:


If I have a .texi file in whicn I have changed the major mode with 'M-x 
org-mode'

I want to press f2 to it will check the file, in my case .texi and change
to major mode as though I keyed 'M-x texinfo-mode'