Is it possible to withdraw bitcoins to bank account
Technically it has to be converted in your fiat first and you can withdraw it in your bank if you found a local exchanger. You can withdraw btv directly to a bitcoin devit card tho.
You can see a list of where you can get yourself a bitcoin devit card here:
https://bitcointalk.org/index.php?topic=1242788.0EDIT: additionally these debit cards can be used to withdraw in any atm banks.