The IAS Prelims pattern was last changed in 2011 when the CSAT paper was introduced. At the time of introduction, marks in GS II or CSAT were taken into account for the preparation of the Prelims Cut Off. However, as of now, CSAT is only a qualifying paper and candidates who score 33% or more are deemed eligible for the next stage.

There is negative marking in both Prelims papers. Aspirants can get detailed information about UPSC Prelims from the linked article.

For General Category aspirants, the UPSC Age Limit is 21-32 years and maximum 6 attempts are allowed. An attempt is counted only when a candidate appears for at least one paper in the UPSC Prelims.

Aspirants who are in their last year of graduation can also take the exam but they will have to submit the proof of passing before they can appear for the Mains stage of the UPSC 2020 exam.