Or 'whose white hat' should be correct?

Could "Whose hat is white?" be an acceptable answer?

What about "Whose white hat is it?"

No one would say "Whose is the white hat?" Except for pretentious members of the British bourgeois ;)

read the sentences as the print size changed from normal to tiny. I not officially hate doing these sentences. Too bad I am learning Vietnamese or I would quit.

What about who does the white hat belong to?

"The white hat is whose?" Should also be correct