UPSC Previous Year Papers. 2019 2018 2017 2016 2015 2014 2013 2012 2011. The significance of the UPSC Previous Year Questions is beyond measure. The only two true sources of preparation to become a successful UPSC topper are the syllabus and the previous year question papers by the UPSC. They give an insight into the type of questions that come in the exam and the way the UPSC expects the.