Here are the compiled P1 past papers for Biology, Physics and Chemistry in one PDF with the front and blank pages removed. This will be helpful for those who want to print the past papers themselves.
TIP: If you want to do questions for individual chapters, then you can search the PDF for the key words that may be used for questions of that chapter. e.g. Ionisation, Orbital, Shell, sub-shell, electronic configuration, etc for the Chapter of Atomic Structure and Electron Configuration in Chemistry.
Biology P1: http://www.mediafire.com/view/?ucvub2afe2xmbid
TIP: If you want to do questions for individual chapters, then you can search the PDF for the key words that may be used for questions of that chapter. e.g. Ionisation, Orbital, Shell, sub-shell, electronic configuration, etc for the Chapter of Atomic Structure and Electron Configuration in Chemistry.
Biology P1: http://www.mediafire.com/view/?ucvub2afe2xmbid