can you get a credit card without having a bank account?

how would you pay your bills without a bank acct? where does your paycheck go? you need a job too, you know

Look on the application form. Does it ask for a bank account?

yes

Yes. You can either get a secured card if you have no credit whatsoever. These cards are backed by a deposit.

Or if you've a credit and your score is good, you can still qualify for a credit card.