https://indianexpress.com/article/jobs/change-in-the-upsc-exam-pattern-over-the-years-5102011/
Till 2009, the UPSC prelims mainly focused on current affairs, history and geography. But from 2010 onwards, the focus shifted to science, polity, environment,...
upsc exam patternchangeyearsjobs
https://www.classiciasacademy.com/upsc-exam-pattern
Go through the UPSC exam pattern before starting preparation for civil services 2025. Know prelims and mains exam pattern for UPSC IAS exam.
upsc exam patterniasprelimsmainsupdated