STUDY GUIDE, which is free to download of the ASTRO website. Has hundreds of BoF type questions. It is really helpful and I think it would be unwise not to use this. I must have read through this all twice and some parts for a third time. Currently their web site seems to be having maintenance and you can't access it. Keep on checking. I will post the link as soon as it is available again.
RAPHEX questions & Answer booklets are good for Physics. Again these are BoF too. I got hold of these from my local Physics department who had a whole lot of these from previous years. They don't seem to have a website like ASTRO. Amazon seem to know of its existence, but don't have any in stock at the moment. I think your best bet is trying your local library and Physics department. I will do a bit more investigating to see how individuals can get hold of these