The word "chosen" is spelled correctly in this case, yes.
Latter.
Both are correct (according to Collins English dictionary). Examples... This it the way the word is spelt. The word is spelled this way.
The word is spelled volume, just as you spelled it.
The word, holiday, is spelled with only one l, while the name, Holiday or Holliday, can be spelled with one or two. It all depends on who has the name and how their ancestors spelled it or how they have chosen to spell it.
Yes, presence is correct.
The word is spelled pressurize, just as you spelled it.
No, "spelled" is not a slang word. It is a proper English word that means to write or say the letters of a word in the correct order.
That is the correct spelling of the word "hotel".
The word is spelled "architect".
The word is spelled criticize, just as you spelled it.
That is the correct spelling of "hot" (having a comparatively high temperature).
The word is spelled socks, just as you spelled it.