There is one good news for all those who will be appearing in the coming UPSC Exams. Now UPSC officially comes out with previous year papers on its website and one can download them to have an idea of the pattern of the exam.
Here are some of the papers UPSC has published on its website.
Civil Services (Preliminary) Exam, 2009
List of Optional Subjects for Civil Services (Preliminary) Examination 2009
Combined Medical Services Exam, 2009
Combined Defence Services Exam (I), 2009
National Defence Academy & Naval Academy Exam (I), 2009
Engineering Services Exam, 2009