The previous year's examination question papers of Aligarh Muslim University can not be found on the internet. The main reason behind that is AMU does not make their paper public.

If you want the previous year's papers, contact the members of the seminar library of the AMU chemistry department. Or else you can check the Maulana Azad Library about the previous year's papers of MSc. If you know any research scholars in the department, they might help you. Moreover, in Aligarh, there is a Shamshad market, famous for bookstores. You can buy reference books, previous year papers, etc. from the bookstores there.