It is called the come and go room by the house elves of hogwarts.
Is the room of requirement destroyed.
The room of requirement also known as the come and go room was a secret room within hogwarts castle that only appears when a person is in great need of it.
Also lets thing this for a moment regardless of spells or not once the spell has been cast i have to imagine that even some laws of physics apply.
The room of requirement may on occasion create an eighth passage out of the school.
As mentioned the junk warehouse aspect of the room of requirement is destroyed near the end of book 7 by fiendfyre.
The room is located on the seventh floor opposite a tapestry showing barnabas the barmy trying to teach trolls to dance the ballet.
The room of requirement is a magical room which can only be discovered by someone who is in need.
It is possible that this completely destroys all aspects of the room but we cannot be certain as no character attempts to re enter the room once it has been closed on the fiendfyre.
Due to the nature of the room of requirement it is possible that several passages to different locations could be accessed from the room.
However fire of any kind needs matter to sust.
The room is thought to have some degree of sentience because it transforms itself into whatever the witch or wizard needs it to be at that moment in time although there are some limitations.
The only known instance of this occurring is a passage to the hog s head bar that formed before the battle of hogwarts.