This is a rather simple thing, but unfortunately it's something that confuses me..

I want to say "what's this thing ?".

Are the {nuq Dochvam ?} and {Dochvam nuq ?} equally correct ? And if not, what's their difference ?

I want to say "who are you ?".

Are the {'Iv SoH ?} and {SoH 'Iv ?} equally correct ? And if not, what's their difference ?

~ bara'qa'