It's a silly question, but, its possible to use the deposit address provided by some exchange to claim on Raiblocks faucet?
no.
you will piss off the exchanges.
it's because of this very fact that Cryptopia delisted XRB because idiots were giving death threats when their XRB was not getting through cause they
kept spamming the exchange with their fucking deposits.
NOOOOOOOOOOOOOOOOOOO