UPSC Prelims 2021 Books | As far as UPSCprelims goes, you do not have to do all questions but you have to do all such questions that majority of students have attempted. Additionally, in order to prepare peacefully you need to feel secured about clearing prelims exam by some margin, hence you need atleast 10-15 more marks than tentative cut-offs.
The general trend in recent years UPSC Prelims Examination that there were a number of current affairs related questions on subjects like geography & economy, instead of basic theory questions. Hence, the books that you read need to be updated. So books that do get regularly updated have reduced significance in examination.
However, books provide a structured understanding of topics & so their utility cannot be neglected. In this page, we have streamlined strategy along with few important books to follow for UPSC Civil Services Prelims examination in English Medium.